Swimming pool cover

Abstract

A swimming pool cover includes a flexible cover layer, a first tightening rope body, and a first adjustment buckle. The flexible cover layer includes a central portion and a peripheral portion. The peripheral portion is connected to the central portion. The central portion is configured for covering an opening of a swimming pool. The peripheral portion is configured for surrounding an outer side wall of the swimming pool. The flexible cover layer is provided with a first rope threading hole. The first tightening rope body is threaded through the first rope threading hole and is configured for tightening the peripheral portion on the outer side wall of the swimming pool. The first tightening rope body is connected to the first adjustment buckle. The first tightening rope body is threaded through the first rope threading hole and is configured to surround to form a first tightening space.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation in part of U.S. application Ser. No. 19 / 065,091, filed on Feb. 27, 2025, the content of which is incorporated by reference herein.TECHNICAL FIELD

[0002] The present disclosure relates to the field of swimming pool protective covers, in particular to a swimming pool cover.BACKGROUND

[0003] With the improvement of people's living standards, family swimming pools have become increasingly popular during the hot summer months. However, the maintenance of outdoor independent swimming pools is a challenge, as exposed pools are prone to accumulating dust, fallen leaves, insects, and other debris that can contaminate the pool water. This increases the frequency and cost of cleaning and maintenance. Currently, swimming pool covers on the market are typically made of lightweight materials. In practical use, due to the lightweight fabric of the swimming pool covers, the swimming pool covers may be easily blown up or even blown away during windy weather. This results in the problem that the swimming pool is easily exposed outside, thereby adversely affecting the usage effect.

[0004] Therefore, on the market, there is an urgent need for a swimming pool cover that is less likely to detach from the swimming pool and has better protective performance, so as to provide users with a better experience.SUMMARY

[0005] In order to overcome the shortcomings of the existing technology, the present disclosure provides a swimming pool cover.

[0006] The swimming pool cover includes a flexible cover layer, a first tightening rope body, and a first adjustment buckle. The flexible cover layer includes a central portion and a peripheral portion. The peripheral portion is connected to the central portion. The central portion is configured for covering an opening of a swimming pool. The peripheral portion is configured for surrounding an outer side wall of the swimming pool. The flexible cover layer is provided with a first rope threading hole. The first tightening rope body is threaded through the first rope threading hole. The first tightening rope body is configured for tightening the peripheral portion on the outer side wall of the swimming pool. The first tightening rope body is connected to the first adjustment buckle. The first tightening rope body is threaded through the first rope threading hole, and the first tightening rope body is configured to surround to form a first tightening space. The first tightening space is configured for tightening the peripheral portion on the outer side wall of the swimming pool. The first adjustment buckle is configured for adjusting a size of the first tightening space. The first adjustment buckle includes a first housing and a first rope reel connected to the first housing. A mounting cavity is defined in the first housing. The first rope reel is capable of rotating within the mounting cavity. The first housing is provided with a third rope threading hole in communication with the mounting cavity. A first end of the first tightening rope body is connected to the first housing. A second end of the first tightening rope body is wound around the first rope reel after passing through the third rope threading hole. The second end of the first tightening rope body subsequently extends out of the first housing via the third rope threading hole.

[0007] Beneficial effects of the present disclosure are as follows. The present disclosure provides a swimming pool cover. The flexible cover layer is configured for completely covering the swimming pool opening. In this way, dust, fallen leaves, insects, and other debris are prevented from entering the swimming pool, so as to maintain cleanliness of the pool water and reduce the frequency and cost of cleaning and maintenance. Moreover, the peripheral portion of the flexible cover layer is configured for surrounding the outer side wall of the swimming pool. Through the friction between the peripheral portion and the outer side wall of the swimming pool, the stability of the swimming pool cover is enhanced, so as to avoid displacement of the swimming pool cover. Further, the flexible cover layer is provided with the first rope threading hole. The first tightening rope body is threaded through the first rope threading hole. The first tightening rope body is configured for tightening the peripheral portion on the outer side wall of the swimming pool. Therefore, this further enhances wind resistance of the swimming pool cover, thereby preventing the swimming pool cover from being easily blown up or blown away during windy weather. Further, the first tightening space surrounded and formed by the first tightening rope body can be adjusted to match the outer side wall of the swimming pool by the first rope reel inside the first adjustment buckle. In addition, the first housing is provided with the third rope threading hole. An adjustable end of the first tightening rope body can thread in and thread out via the third rope threading hole, thereby ensuring that the first tightening rope body maintains a smooth path. This avoids wear or jamming of the first tightening rope body caused by misalignment between an entry aperture and an exit aperture. Moreover, this enhances the stability and smoothness of the first tightening rope body during a tightening process, thereby improving its service life.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Implementations of the present disclosure will now be described, by way of embodiment, with reference to the attached figures. It should be understood, the drawings are shown for illustrative purpose only, for ordinary person skilled in the art, other drawings obtained from these drawings without paying creative labor by an ordinary person skilled in the art should be within scope of the present disclosure.

[0009] FIG. 1 is an overall structural diagram of the first embodiment of the present disclosure;

[0010] FIG. 2 is an enlarged view of area I in FIG. 1;

[0011] FIG. 3 is another overall structural diagram of the first embodiment of the present disclosure;

[0012] FIG. 4 is an enlarged view of area J in FIG. 3;

[0013] FIG. 5 is an exploded view of a first adjustment buckle in the first embodiment of the present disclosure;

[0014] FIG. 6 is another exploded view of the first adjustment buckle in the first embodiment of the present disclosure;

[0015] FIG. 7 is yet another exploded view of the first adjustment buckle in the first embodiment of the present disclosure;

[0016] FIG. 8 is an exploded view of another embodiment of the present disclosure;

[0017] FIG. 9 is an enlarged view of area K in FIG. 8;

[0018] FIG. 10 is an overall structural diagram of the second embodiment of the present disclosure;

[0019] FIG. 11 is an enlarged view of area A in FIG. 1;

[0020] FIG. 12 is an enlarged view of area B in FIG. 1;

[0021] FIG. 13 is another overall structural diagram of the second embodiment of the present disclosure;

[0022] FIG. 14 is an enlarged view of area C in FIG. 4;

[0023] FIG. 15 is an enlarged view of area D in FIG. 4;

[0024] FIG. 16 is yet another overall structural diagram of the second embodiment of the present disclosure;

[0025] FIG. 17 is an enlarged view of area E in FIG. 7;

[0026] FIG. 18 is an enlarged view of area F in FIG. 7;

[0027] FIG. 19 is a sectional view taken along a second elastic adjustment buckle in the second embodiment of the present disclosure;

[0028] FIG. 20 is an enlarged view of area G in FIG. 10;

[0029] FIG. 21 is a sectional view taken along a third elastic adjustment buckle in the second embodiment of the present disclosure;

[0030] FIG. 22 is an enlarged view of area H in FIG. 12.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art that the exemplary embodiments described herein may be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the exemplary embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.

[0032] The term “comprising” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references can mean “at least one”. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of embodiments of the application, “a plurality of” means two or more, unless otherwise specifically defined.

[0033] The first embodiment Referring to FIG. 1-FIG. 7, a swimming pool cover includes a flexible cover layer 1, a first tightening rope body 4, and a first adjustment buckle 6. The flexible cover layer 1 includes a central portion 11 and a peripheral portion 12. The peripheral portion 12 is connected to the central portion 11. The central portion 11 is configured for covering an opening 21 of a swimming pool 2. The peripheral portion 12 is configured for surrounding an outer side wall 22 of the swimming pool 2. The flexible cover layer 1 is provided with a first rope threading hole 31. The first tightening rope body 4 is threaded through the first rope threading hole 31. The first tightening rope body 4 is configured for tightening the peripheral portion 12 on the outer side wall 22 of the swimming pool 2. The first tightening rope body 4 is connected to the first adjustment buckle 6. The first tightening rope body 4 is threaded through the first rope threading hole 31, and the first tightening rope body 4 is configured to surround to form a first tightening space 41. The first tightening space 41 is configured for tightening the peripheral portion 12 on the outer side wall 22 of the swimming pool 2. The first adjustment buckle 6 is configured for adjusting a size of the first tightening space 4. The first adjustment buckle 6 includes a first housing 61 and a first rope reel 62 connected to the first housing 61. A mounting cavity 610 is defined in the first housing 61. The first rope reel 62 is capable of rotating within the mounting cavity 610. The first housing 61 is provided with a third rope threading hole 611 in communication with the mounting cavity 610. A first end of the first tightening rope body 4 is connected to the first housing 61. A second end of the first tightening rope body 4 is wound around the first rope reel 62 after passing through the third rope threading hole 611. The second end of the first tightening rope body 4 subsequently extends out of the first housing 61 via the third rope threading hole 611.

[0034] Through the above structure, the flexible cover layer 1 is configured for completely covering the swimming pool opening 21 of the swimming pool. In this way, dust, fallen leaves, insects, and other debris are prevented from entering the swimming pool 2, so as to maintain cleanliness of the pool water and reduce the frequency and cost of cleaning and maintenance. Moreover, the peripheral portion 12 of the flexible cover layer 1 is configured for surrounding the outer side wall 22 of the swimming pool 2. Through the friction between the peripheral portion 12 and the outer side wall 22 of the swimming pool 2, the stability of the swimming pool cover is enhanced, so as to avoid displacement of the swimming pool cover. Further, the flexible cover layer 1 is provided with the first rope threading hole 31. The first tightening rope body 4 is threaded through the first rope threading hole 31. The first tightening rope body 4 is configured for tightening the peripheral portion 12 on the outer side wall 22 of the swimming pool 2. Therefore, this further enhances wind resistance of the swimming pool cover, thereby preventing the swimming pool cover from being easily blown up or blown away during windy weather. Further, the first tightening space 41 surrounded and formed by the first tightening rope body 4 can be adjusted to match the outer side wall 22 of the swimming pool 2 by the first rope reel 62 inside the first adjustment buckle 6. In addition, the first housing 61 is provided with the third rope threading hole 611. An adjustable end of the first tightening rope body 4 can thread in and thread out via the third rope threading hole 611, thereby ensuring that the first tightening rope body 4 maintains a smooth path. This avoids wear or jamming of the first tightening rope body 4 caused by misalignment between an entry aperture and an exit aperture. Moreover, this enhances the stability and smoothness of the first tightening rope body 4 during a tightening process, thereby improving its service life.

[0035] In this embodiment, the first adjustment buckle 6 is capable of switching between a locked state and an unlocked state. When the first adjustment buckle 6 is in the locked state, the first adjustment buckle 41 is capable of constricting the first tightening space 41 and is prevented from expanding the first tightening space 41. When the first adjustment buckle 6 is in the unlocked state, the first adjustment buckle 6 is capable of constricting or expanding the first tightening space 41.

[0036] Further, the first adjustment buckle 6 is a first ratchet adjustment buckle 66. The first ratchet adjustment buckle 66 includes the first housing 61, the first rope reel 62, and a first pawl 63. A first ratchet 621 extends from the first rope reel 62. The first pawl 63 is movable between a locked position and an unlocked position. When the first pawl 63 moves the locked position, the first pawl 63 is engaged with the first ratchet 621, and the first adjustment buckle 6 is in the locked state. In addition, the first rope reel 62 and the first ratchet 621 are capable of rotating in a forward direction to constrict the first tightening space 41, and the first rope reel 62 and the first ratchet 621 are prevented from rotating in a reverse direction, so as to prevent expansion of the first tightening space 41. When the first pawl 63 moves the unlocked position, the first pawl 63 is detached from the first ratchet 621, and the first adjustment buckle 6 is in the unlocked state. In addition, the first rope reel 62 and the first ratchet 621 are capable of rotating in the forward direction to constrict the first tightening space 41, and the first rope reel 62 and the first ratchet 621 are capable of rotating in the reverse direction to expand the first tightening space 41.

[0037] Further, the first ratchet adjustment buckle 66 further includes a first elastic restoring device 64. The first elastic restoring device 64 is connected to the first housing 61. The first elastic restoring device 64 abuts against the first pawl 63 and is configured for pushing the first pawl 63 towards the first ratchet 621, so as to make the first pawl 63 in the locked position, so that the first pawl 63 is engaged with the first ratchet 621. The first elastic restoring device 64 is a first restoring spring.

[0038] Further, the first ratchet 621 extends from a bottom portion of the first rope reel 62. The first ratchet 621 is provided with a plurality of first unidirectional teeth portions 622, and the first unidirectional teeth portions 622 are interconnected. The first unidirectional teeth portion includes a first inclined guiding surface 6221 and a first stop surface 6222. The first inclined guiding surface 6221 is connected to the first stop surface 6222. When the first pawl 63 engages with the first ratchet 621, the first ratchet 621 is capable of rotating in the forward direction via the first inclined guiding surface 6221, so that the first rope reel 62 is capable of rotating in the forward direction to constrict the first tightening space 41. In addition, the first ratchet 621 is prevented from rotating in the reverse direction by the first stop surface 6222, so that the first rope reel 62 is prevented from rotating in the reverse direction, so as to prevent expansion of the first tightening space 41.

[0039] Further, the first pawl 63 includes a first guiding end 631. The first guiding end 631 includes a third inclined guiding surface 6311 and a third stop surface 6312 connected to the third inclined guiding surface 6311. When the first pawl 63 engages with the first ratchet 621 during forward rotation, the first inclined guiding surface 6221 abuts against the third inclined guiding surface 6311. The first stop surface 6222 abuts against the third stop surface 6312, so as to prevent the first ratchet 621 from rotating in the reverse direction.

[0040] Through the above structure, the arrangement of the first adjustment buckle 6 is effectively achieved. When the first tightening space 41 needs to be constricted, the first ratchet 621 is capable of rotating in the forward direction via the first inclined guiding surface 6221. In addition, the first inclined guiding surface 6221 abuts against the third inclined guiding surface 6311 to achieve coordinated sliding, so that users can move the first tightening rope body 4 in the forward direction for constriction. After the constriction is completed, the first stop surface 6222 abuts against the third stop surface 6312, so as to prevent the first ratchet 621 from rotating in the reverse direction. In this way, this prevents the first tightening rope body 4 from moving in the reverse direction and expanding the first tightening space 41, thereby allowing the first tightening rope body 4 to tighten the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2. When it is necessary to expand the first tightening space 41, an external force greater than an elastic restoring force provided by the first elastic restoring device 64 can be applied to the first pawl 63, so that the first pawl 63 is separated from the first ratchet 621. The first rope reel 62 and the first ratchet 621 are capable of rotating in the reverse direction to allow the first tightening rope body 4 to move in the reverse direction to expand the first tightening space 41.

[0041] In this embodiment, a first limiting groove 6223 is formed between two adjacent first unidirectional teeth portions 622. The first pawl 63 includes a first guiding end 631. When the first pawl 63 engages with the first ratchet 621, the first guiding end 631 is positioned in the first limiting groove 6223. Further, the first pawl further 63 further includes a first limiting end 632. Second limiting groove 633 is formed between the first limiting end 632 and the first guiding end 631. When the first pawl 63 engages with the first ratchet 621, the first unidirectional teeth portion 622 is positioned in the second limiting groove 633. A shape of the first guiding end 631 corresponds to that of the first limiting groove 6223, and a shape of the first unidirectional teeth portion 622 corresponds to that of the second limiting groove 633. The first pawl 63 and the first ratchet 621 are located at an identical horizontal level.

[0042] Through the above structure, the first limiting groove 6223 is arranged between adjacent unidirectional teeth portions 622. The first guiding end 631 and the first limiting end 632 are arranged on the first pawl 63 to cooperate with the first limiting groove 6223. In this way, when the first pawl 63 is engaged with the first ratchet 621, the first guiding end 631 can be accurately embedded in the first limiting groove 6223. Therefore, this achieves precise limit positioning and prevents the first pawl 63 from slipping or reversing when it stops operation. Meanwhile, the first unidirectional teeth portion 622 is positioned in the second limiting groove 633 formed by the first pawl 63, which can further enhance the stability of engagement and improve the anti-reverse effect. Moreover, the shape of the first guiding end 631 and the shape of the first unidirectional teeth portion 622 respectively correspond to the shapes of corresponding limiting grooves, so that the engagement between the first guiding end 631 and corresponding limiting groove is tighter. In addition, the engagement between the first unidirectional teeth portion 622 and corresponding limiting groove is tighter. Therefore, this improves the structural stability, so as to avoid excessive looseness when the operation is stopped. The first pawl 63 and the first ratchet 621 are located at the identical horizontal level, thereby ensuring smooth engagement and transmission reliability. In addition, this prevents detachment and improves the stability and reliability of the engagement.

[0043] In this embodiment, the first housing 61 is narrow at the front and wide at the back. The first housing 61 includes a front end face 613 and a rear end face 614 opposite to the front end face 613. A width of the first housing 61 gradually decreases from a middle portion of the first housing 61 to the front end face 613 of the first housing 61. Through the above structure, since the first housing 61 is designed to be narrow at the front and wide at the back, the overall housing presents a streamlined appearance. This configuration not only achieves a more aesthetic appearance but also facilitates gripping and operation during use, which conforms to ergonomic requirements.

[0044] In this embodiment, the first housing 61 includes an upper housing 617 and a lower housing 618 connected under the upper housing 617. The upper housing 617 is connected to the lower housing 618 to form the mounting cavity 610. A rope-winding rod 65 is arranged on an end of the mounting cavity 610 adjacent to the front end face 613. The rope-winding rod 65 is connected between the upper housing 617 and the lower housing 618. The first end of the first tightening rope body 4 is wound and fixed on the rope-winding rod 65. The second end of the first tightening rope body 4 is wound around the first rope reel 62 after passing through the third rope threading hole 611. The second end of the first tightening rope body 4 subsequently extends out of the first housing 61 via the third rope threading hole 611. Through the above structure, the rope-winding rod 65 is arranged on an end of the mounting cavity 610 adjacent to the front end face 613, thereby allowing one end of the first tightening rope body 4 to be securely wound around and fixed to the rope-winding rod 65. This configuration ensures stable force application during the constricting and releasing process of the first tightening rope body 4, so as to prevent it from falling off or slipping. Furthermore, the first tightening rope body 4 is threaded into the rope reel via the third rope threading hole 611 and wound around the rope reel, and then the first tightening rope body 4 extends out of the housing. Therefore, this achieves a reasonable routing path for the first tightening rope body 4, and ensures that the first tightening rope body 4 maintains a smooth path. Moreover, this avoids wear or jamming of the first tightening rope body 4 due to misalignment between the entry aperture and the exit aperture, thereby enhancing its stability and smoothness during the tightening process and increasing its service life.

[0045] In this embodiment, the third rope threading hole 611 is arranged at the rear end face 614. The rope-winding rod 65 is arranged opposite to the third rope threading hole 611 and is positioned at a middle portion of the third rope threading hole 611. Through the above structure, a reasonable arrangement of the rope-winding rod 65 and the third rope threading hole 611 is effectively achieved. Since the rope-winding rod 65 is positioned at the middle portion of the third rope threading hole 611, this can effectively prevent the first housing 61 from tilting or shaking when the first tightening rope body 4 is pulled, thereby ensuring smoother and more fluent operation during the pulling process.

[0046] In this embodiment, a first mounting groove 6174 is defined in an inner surface of the upper housing 617. The first rope reel 62 is mounted in the first mounting groove 6174, and an outer surface of the upper housing 617 is provided with a first protruding portion 6175 corresponding to the first mounting groove 6174. Second mounting groove 6183 is defined in an inner surface of the lower housing 618. The first rope reel 62 is mounted in the second mounting groove 6183. An outer surface of the lower housing 618 is provided with a second protruding portion 6184 corresponding to the second mounting groove 6183. Through the above structure, the first rope reel 62 is effectively mounted in the mounting cavity 610. Further, the first protruding portion 6175 corresponding to the first mounting groove 6174 is arranged on the outer surface of the upper housing 617, and the second protruding portion 6184 corresponding to the second mounting groove 6183 is arranged on the lower housing 618. Therefore, during use, when the first rope reel 62 rotates in the first mounting groove 6174 and the second mounting groove 6183, since the first rotating shaft 625 on the first rope reel 62 has a tip portion, the upper housing 617 or the lower housing 618 may be worn due to rotation. The first protruding portion 6175 and the second protruding portion 6184 are configured for playing a role in protecting the first housing 61. When pulling the rope, users can grip the first protruding portion 6175 and the second protruding portion 6184, so as to save efforts and prevent slipping.

[0047] In this embodiment, a first stop plate 651 is arranged on an upper end of the rope-winding rod 65, and a second stop plate 652 is arranged on a lower end of the rope-winding rod 65. A first mounting hole 6171 is defined in the upper housing 617, and a second mounting hole 6181 is defined in the lower housing 618. When the upper housing 617 is connected to the lower housing 618, the rope-winding rod 65 is configured for penetrating through the first mounting hole 6171 and the second mounting hole 6181. The first stop plate 651 is positioned outside the upper housing 617, and the second stop plate 652 is positioned outside the lower housing 618. Through the above structure, the rope-winding rod 65 is effectively mounted stably on the first housing 61. Under the limiting function of the first stop plate 651 and the second stop plate 652, the rope-winding rod 65 is prevented from detaching from the upper housing 617 and the lower housing 618, thereby ensuring the firmness of the first tightening rope body 4 during tightening process.

[0048] In this embodiment, the first housing 61 includes a left end face 615 and a right end face 616 arranged opposite to the left end face 615. The upper housing 617 is provided with a first connecting post 6172 that extends downward from a side of the upper housing 617 adjacent to the left end face 615. The lower housing 618 is provided with a first connecting engagement post 6181 that extends upward from a side of the lower housing 618 adjacent to the left end face 615. The upper housing 617 is provided with a second connecting post 6173 that extends downward from a side of the upper housing 617 adjacent to the right end face 616. The lower housing 618 is provided with a second connecting engagement post 6182 that extends upward from a side of the lower housing 618 adjacent to the right end face 616. The first connecting post 6172 is connected to the first connecting engagement post 6181, and the second connecting post 6173 is connected to and engaged with the second connecting engagement post 6182, so that the upper housing 617 is connected to the lower housing 618 to form the mounting cavity 610. The first connecting post 6172 and the first connecting engagement post 6181 are detachably connected by a screw. The second connecting post 6173 and the second connecting engagement post 6182 are detachably connected by a screw. Through the above structure, a stable connection between the upper housing 617 and the lower housing 618 is effectively achieved, which facilitates disassembly and maintenance. Simultaneously, this ensures an accurate shape of the mounting cavity 610, and also ensures a mounting space for structures such as the rope reel and the rope-winding rod.

[0049] In this embodiment, the first pawl 63 is connected to a pushing block 67. The first housing 61 is provided with an avoiding recess 619 in communication with the mounting cavity 610. At least one portion of the pushing block 67 is exposed outside the first housing 61 via the avoiding recess 619. The first pawl 63 is movable between the locked position and the unlocked position by pushing or releasing the pushing block 67. The pushing block 67 and the first pawl 63 are integrally formed. Through the above structure, the pushing block 67 is arranged on the first pawl 63, and the first housing 61 is provided with the avoiding recess 619 in communication with the mounting cavity 610. In this way, at least one portion of the pushing block 67 is exposed outside the first housing 61. Therefore, the first pawl 63 is capable of switching between the locked position and the unlocked position by directly pushing the pushing block 67, without disassembling the housing or requiring any tools. When the pushing block 67 is pressed or pushed, the pushing block 67 is capable of driving the first pawl 63 to disengage from the ratchet, so as to achieve quick unlocking. Therefore, this facilitates users to loosen or readjust the tightening rope body. When the pushing block 67 is released, the first pawl 63 is engaged with the first ratchet 621 again under the action of an elastic force, thereby restoring the locked state and effectively preventing the tightening rope body from retracting or loosening. Furthermore, the pushing block 67 and the first pawl 63 are integrally formed, which reduces the number of parts, realizes a more compact structure, and simplifies the manufacturing and assembly process. This is conducive to reducing production costs and improving assembly efficiency.

[0050] In this embodiment, the first rope reel 62 includes a first limiting plate 623, a second limiting plate 624, and a first rotating shaft 625. The first limiting plate 623 and the second limiting plate 624 are connected along an axial direction, so as to form a first limiting groove 626. The first rotating shaft 625 is rotatably connected to the first housing 61. A first through hole 6232 is defined in a center of the first limiting plate 623, and a second through hole 6241 is defined in a center of the second limiting plate 624. The first rotating shaft 625 is configured for passing through the first through hole 6232 and the second through hole 6241 in sequence, so that the first limiting plate 623 is connected to the second limiting plate 624. A height of the first limiting groove 626 gradually decreases from an outer edge of the first rope reel 62 to a center of the first rope reel 62.

[0051] Further, a plurality of first locking protrusions 6231 are arranged on a surface of the first limiting plate 623 adjacent to the first limiting groove 626, and the first locking protrusions 6231 are distributed radially. A plurality of first locking protrusions 6231 distributed radially are arranged on a surface of the second limiting plate 624 adjacent to the first limiting groove 626. The first locking protrusions are arranged radially. The first locking protrusions 6231 are configured for preventing relative movement between the first tightening rope body 4 and the first limiting plate 623. In addition, the first locking protrusions 6231 are configured for preventing relative movement between the first tightening rope body 4 and the second limiting plate 624. Through the above structure, the plurality of first locking protrusions 6231 are respectively arranged on the surface of the first limiting plate 623 adjacent to the first limiting groove 626 and the surface of the second limiting plate 624 adjacent to the first limiting groove 626. In addition, the first locking protrusions 6231 are distributed radially, which can effectively increase the friction between the locking protrusions and the rope body. Meanwhile, the height of the first limiting groove 626 gradually decreases from the outer edge of the first rope reel 62 to the center of the first rope reel 62. This can effectively prevent the tightening rope body from sliding or generating relative movement between the limiting plates, so as to improve reliability and stability of the tightening effect.

[0052] In this embodiment, a length of the first housing 61 is in a range from 15 mm to 100 mm, a width of the first housing 61 is in a range from 10 mm to 100 mm, and a height of the first housing 61 is in a range from 5 mm to 100 mm. A length of the third rope threading hole 611 is in a range from 2 mm to 50 mm, and a width of the third rope threading hole 611 is in a range from 2 mm to 50 mm.

[0053] Through the above structure, the third rope threading hole 611 within this range ensures that the first tightening rope body 4 can thread in or thread out smoothly. Meanwhile, the first housing 6 within this range ensures a storage space for the first tightening rope body 4. This configuration features a compact structure and a small volume, which facilitates carrying and transportation and reduces production costs.

[0054] In this embodiment, the first rope reel 62 and the first ratchet 621 are integrally formed. The first rope reel 62 is a zinc alloy rope reel. The first pawl 63 is a first zinc alloy pawl 63. The first housing 61 is a first Polyamide housing 61. The first tightening rope body 4 is a first Polypropylene rope body, a first polyester rope body, or a first nylon rope body. Through the above structure, the first rope reel 62 and the first ratchet 621 are integrally formed, so that additional assembly steps are eliminated, and the number of parts is reduced. This results in a more compact structure and simplifies the manufacturing and assembly processes. Moreover, this is conducive to reducing production costs and improving assembly efficiency. Furthermore, both the first rope reel 62 and the first pawl 63 are made of zinc alloy material. The zinc alloy possesses excellent mechanical strength, wear resistance, and corrosion resistance, which can extend the service life. Meanwhile, the first housing 61 is made of Polyamide nylon material, which features light weight and wear resistance. This not only effectively reduces the overall weight, but also has the effect of preventing the first housing 61 from deformation.

[0055] In this embodiment, the first adjustment buckle 6 is designed to be lightweight and compact. When applied to a swimming pool cover, the first adjustment buckle 6 is convenient and efficient, and it can provide an effective tightening effect, thereby significantly reducing the mounting time.

[0056] In the other embodiment, referring to FIG. 8-FIG. 9, the first end of the first tightening rope body 4 is wound on the rope-winding rod 65 via a metal locking buckle 42. The second end of the first tightening rope body 4 is wound around the first rope reel 62 after passing through the third rope threading hole 611. The second end of the first tightening rope body 4 subsequently extends out of the first housing 61 via the third rope threading hole 611. The metal locking buckle 42 includes a mounting end 421 and a rope-winding end 422. The mounting end 421 is configured for hanging on the rope-winding rod 65. The first tightening rope body 4 is wound on the rope-winding end 422. A width of the mounting end 421 is less than that of the rope-winding end 422. The metal locking buckle 42 includes a retaining ring 423 and a toggle post 424 rotatably connected to the retaining ring 423. A locking buckle 4241 is arranged on a free end of the toggle post 424, and the retaining ring 423 is provided with a locking recess 4231 configured for tightly engaging with the locking buckle 4241. Through the above structure, the metal locking buckle 42 is arranged on one end of the first tightening rope body 4. This metal locking buckle 42 is utilized to secure the rope body to the rope-winding rod, thereby achieving a stable connection between the rope body and the rope-winding rod. The metal locking buckle 42 is designed with the mounting end 421 and the rope-winding end 422 having distinct sizes. This enables the metal locking buckle 42 to be securely hung on the rope-winding rod, and also facilitates the firm fixation of the rope body. Therefore, this design ensures the reliability and convenience of the product. Further, the metal locking buckle 42 includes the retaining ring 423 and the toggle post 424 rotatably connected to the retaining ring 423. The locking buckle 4241 is arranged on a free end of the toggle post 424, and is configured for cooperating with the locking recess 4231 on the retaining ring 423, so as to form a releasable closure mechanism. This facilitates securing the metal locking buckle 42 to the rope-winding rod while ensuring firm stability. Moreover, the metal locking buckle 42 is entirely made of metal material and has high strength and wear resistance. This enables the metal locking buckle 42 to withstand long-term tension and friction, and prevent fracture or deformation, thereby extending its service life.

[0057] The second embodiment Referring to FIG. 10-FIG. 22, a swimming pool cover includes a flexible cover layer 1. The flexible cover layer 1 includes a middle portion 11 and a peripheral portion 12. The peripheral portion 12 is connected to the middle portion 11. The middle portion 11 is configured for covering an opening 21 of a swimming pool 2. The peripheral portion 12 is configured for surrounding an outer side wall 22 of the swimming pool 2, and the peripheral portion 12 is provided with a first outer edge 121.

[0058] The swimming pool cover further includes a hanging lug 3. The hanging lug 3 is connected to the cover layer 1, and the hanging lug 3 is arranged on the peripheral portion 12. A spacing is defined between the hanging lug 3 and the first outer edge 121. The hanging lug 3 is provided with a first rope threading hole 31.

[0059] The swimming pool cover further includes a first tightening rope body 4. The first tightening rope body 4 is threaded through the first rope threading hole 31. A spacing is defined between the first tightening rope body 4 and the first outer edge 121. The first tightening rope body 4 is configured for tightening the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2.

[0060] Through the above structure, the flexible cover layer 1 is configured for completely covering the swimming pool opening 21 of the swimming pool 2, which can effectively prevent dust, fallen leaves, insects, and other debris from entering the swimming pool 2. Therefore, this maintains the cleanliness of the pool water and reduces cleaning frequency and maintenance costs. Moreover, the peripheral portion 12 of the flexible cover layer 1 is configured for surrounding the outer side wall 22 of the swimming pool 2, so that the stability of the swimming pool cover is increased by a frictional force between the peripheral portion 12 and the outer side wall 22 of the swimming pool 2, thereby preventing the swimming pool cover from being displaced. Furthermore, the hanging lug 3 is provided with the first rope threading hole 31, and the first tightening rope body 4 is threaded through the first rope threading hole 31. In addition, the first tightening rope body 4 is configured for tightening the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2, so that the wind resistance of the swimming pool cover is further enhanced, and the swimming pool cover is not easy to be blown up or displaced even in strong wind weather. Furthermore, there is a spacing between the hanging lug 3 and the first outer edge 121, and also a spacing between the first tightening rope body 4 and the first outer edge 121. Therefore, the first outer edge 121 and the first tightening rope body 4 are configured for jointly surrounding and tightening the outer side wall 22 of the swimming pool 2. This further enhances the wind resistance of the swimming pool cover, and makes the swimming pool cover not easy to be blown up or displaced even in strong wind weather. Moreover, even when the first tightening rope body 4 is displaced and detaches from the outer side wall 22 of the swimming pool 2, the first outer edge 121 can still surround the outer side wall 22 of the swimming pool 2, so as to prevent the peripheral portion 12 from detaching from the outer side wall 22 of the swimming pool 2.

[0061] In this embodiment, the swimming pool cover further includes a partition portion 5. The partition portion 5 is configured for dividing the first rope threading hole 31 of the hanging lug 3 into a first threading hole 311 and a second threading hole 312. The first tightening rope body 4 is threaded through the first threading hole 311, and the second threading hole 312 is configured for connecting to a counterweight 3121 or a ground spike 3122. The partition portion 5 is formed by stitching one part of the hanging lug 3 and another other part of the hanging lug 3 together by using sewing thread. Through the above structure, the first tightening rope body 4 is threaded through the first threading hole 311, so that the first tightening rope body 4 is configured for tightening the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2. This further enhances the wind resistance of the swimming pool cover, and makes the swimming pool cover not easy to be blown up or displaced even in strong wind weather. Moreover, by connecting the second threading hole 312 to the counterweight 3121 or the ground spike 3122, the peripheral portion 12 of the swimming pool cover is further tightened, thereby preventing the swimming pool cover from being blown up or displaced.

[0062] In this embodiment, the swimming pool cover further includes a first adjustment buckle 6. The first tightening rope body 4 is connected to the first adjustment buckle 6. The first tightening rope body 4 is threaded through the first rope threading hole 31, and the first tightening rope body 4 is configured to surround and form a first tightening space 41. The first tightening space 41 is configured for tightening the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2. The first adjustment buckle 6 is configured for adjusting a size of the first tightening space 41. Through the above structure, the first tightening space 41 surrounded and formed by the first tightening rope body 4 can be adjusted to match the outer side wall 22 of the swimming pool 2, so that the peripheral portion 12 is tightened onto the outer side wall 22 of the swimming pool 2, and the swimming pool cover is prevented from being blown up or displaced.

[0063] The first adjustment buckle 6 is switchable between a locked state and an unlocked state. When the first adjustment buckle 6 is in the locked state, the first adjustment buckle 6 is capable of constricting the first tightening space 41 and is prevented from expanding the first tightening space 41. When the first adjustment buckle 6 is in the unlocked state, the first adjustment buckle 6 is capable of constricting or expanding the first tightening space 41.

[0064] The first adjustment buckle 6 is a first ratchet adjustment buckle 66. The first ratchet adjustment buckle 66 includes a first housing 61, a first rope reel 62, and a first pawl 63. The first rope reel 62 is connected to the first housing 61, and the first rope reel 62 is rotatable inside the first housing 61. A first end of the first tightening rope body 4 is connected to the first housing 61, and a second end of the first tightening rope body 4 is wound around the first rope reel 62 and extends out of the first housing 61. The first pawl 63 is movable between a locked position and an unlocked position. When the first pawl 63 moves to the locked position, the first pawl 63 is engaged with a first ratchet 621, and the first adjustment buckle 6 is in the locked state. In addition, the first rope reel 62 and the first ratchet 621 are rotatable in a forward direction to constrict the first tightening space 41, and the first rope reel 62 and the first ratchet 621 are not rotatable in a reverse direction to expand the first tightening space 41. The first rope reel 62 extends to form the first ratchet 621. When the first pawl 63 moves to the unlocked position, the first pawl 63 separates from the first ratchet 621, and the first adjustment buckle 6 is in the unlocked state. In addition, the first rope reel 62 and the first ratchet 621 are rotatable in the forward direction to constrict the first tightening space 41, and the first rope reel 62 and the first ratchet 621 are rotatable in the reverse direction to expand the first tightening space 41. Specifically, the first ratchet adjustment buckle 66 also includes a first elastic restoring device 64. The first elastic restoring device 64 is connected to the first housing 61. The first elastic restoring device 64 abuts against the first pawl 63. The first elastic restoring device 64 is configured for pushing the first pawl 63 towards the first ratchet 621 to the locked position, so that the first pawl 63 is engaged with the first ratchet 621. Furthermore, the first ratchet 621 is provided with a plurality of interconnected first unidirectional teeth portions 622. The first unidirectional teeth portion 622 includes a first inclined guiding surface 6221 and a first stop surface 6222. The first inclined guiding surface 6221 is connected to the first stop surface 6222. When the first pawl 63 is engaged with the first ratchet 621, the first ratchet 621 is rotatable in the forward direction through the first inclined guiding surface 6221, so that the first rope reel 62 is rotatable in the forward direction to constrict the first tightening space 41. In addition, the first stop surface 6222 is configured for preventing the first ratchet 621 from rotating in the reverse direction, so that the first rope reel 62 is not rotatable in the reverse direction to expand the first tightening space 41.

[0065] Through the above structure, the arrangement of the first adjustment buckle 6 is effectively achieved. When the first tightening space 41 needs to be constricted, the first ratchet 621 is rotatable in the forward direction through the first inclined guiding surface 6221, so that users can move the first tightening rope body 4 in the forward direction for constriction. After the constriction is completed, the first stop surface 6222 is configured for preventing the first ratchet 621 from rotating in the reverse direction, so as to prevent the first tightening rope body 4 from moving in the reverse direction and expanding the first tightening space 41. Therefore, this allows the first tightening rope body 4 to tighten the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2. When it is necessary to expand the first tightening space 41, an external force greater than an elastic restoring force provided by the first elastic restoring device 64 can be applied to the first pawl 63, so that the first pawl 63 is separated from the first ratchet 621. In addition, the first rope reel 62 and the first ratchet 621 are rotatable in the reverse direction, so that the first tightening rope body 4 is enabled to move in the reverse direction to expand the first tightening space 41. The first elastic restoring device 64 is a first restoring spring. The first rope reel 62 includes a first limiting plate 623, a second limiting plate 624, and a first rotating shaft 625. The first rotating shaft is rotatably connected to the first housing. A first limiting groove is defined between the first limiting plate and the second limiting plate. An inner surface of the first limiting plate and an inner surface of the second limiting plate are both provided with first locking protrusions 6231. The first locking protrusions are configured for locking the first tightening rope body in the first limiting groove, so as to prevent relative movement between the first tightening rope body and the first limiting plate. In addition, the first locking protrusions are also configured for preventing relative movement between the first tightening rope body and the second limiting plate.

[0066] In this embodiment, the first outer edge 121 is provided with a second rope threading hole 1211. The swimming pool cover further includes a second tightening rope body 7. The second tightening rope body 7 is threaded through the second rope threading hole 1211. The second tightening rope body 7 is configured for tightening the first outer edge 121 onto the outer side wall 22 of the swimming pool 2. Through the above structure, the second tightening rope body 7 positioned at the first outer edge 121 and the first tightening rope body 4 positioned at the hanging lug 3 are configured for jointly surrounding and tightening the outer side wall 22 of the swimming pool 2. This achieves dual tightening of the peripheral portion 12 and further enhances wind resistance of the swimming pool cover, thereby making the swimming pool cover not easy to be blown up or displaced even in strong wind weather. Moreover, even when the first tightening rope body 4 is displaced and detached from the outer side wall 22 of the swimming pool 2, the second tightening rope body 7 positioned at the first outer edge 121 can still surround the outer side wall 22 of the swimming pool 2. Therefore, this prevents the peripheral portion 12 from detaching from the outer side wall 22 of the swimming pool 2.

[0067] In this embodiment, the swimming pool cover further includes a second adjustment buckle 8. The second tightening rope body 7 is connected to the second adjustment buckle 8. The second tightening rope body 7 is threaded through the second rope threading hole 1211, and the second tightening rope body 7 is configured to surround to form a second tightening space 71. The second tightening space 71 is configured for tightening the first outer edge 121 onto the outer side wall 22 of the swimming pool 2. The second adjustment buckle 8 is configured for adjusting a size of the second tightening space 71. Through the above structure, the second tightening space 71 surrounded and formed by the second tightening rope body 7 can be adjusted to match the outer side wall 22 of the swimming pool 2, so as to tighten the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2 and prevent the swimming pool cover from being blown up or displaced.

[0068] In this embodiment, the second adjustment buckle 8 is a second ratchet adjustment buckle 86. The second ratchet adjustment buckle 86 includes a second housing 81, a second rope reel 82, and a second pawl 83. The second rope reel 82 is connected to the second housing 81, and the second rope reel 82 is rotatable inside the second housing 81. A first end of the second tightening rope body 7 is connected to the second housing 81. A second end of the second tightening rope body 7 is wound around the second rope reel 82 and extends out of the second housing 81. The second rope reel 82 extends to form a second ratchet 821. The second pawl 83 is movable between a locked position and an unlocked position. When the second pawl 83 moves to the locked position, the second pawl 83 is engaged with the second ratchet 821, and the second adjustment buckle 8 is in a locked state. In addition, the second rope reel 82 and the second ratchet 821 are rotatable in a forward direction to constrict the second tightening space 71, and the second rope reel 82 and the second ratchet 821 are not rotatable in a reverse direction to expand the second tightening space 71. When the second pawl 83 moves to the unlocked position, the second pawl 83 separates from the second ratchet 821, and the second adjustment buckle 8 is in an unlocked state. In addition, the second rope reel 82 and the second ratchet 821 are rotatable in the forward direction to constrict the second tightening space 71, and the second rope reel 82 and the second ratchet 821 are rotatable in the reverse direction to expand the second tightening space 71. The second ratchet adjustment buckle 86 also includes a second elastic restoring device 84. The second elastic restoring device 84 is connected to the second housing 81. The second elastic restoring device 84 abuts against the second pawl 83. The second elastic restoring device 84 is configured for pushing the second pawl 83 towards the second ratchet 821 to the locked position, so that the second pawl 83 is engaged with the second ratchet 821. Specifically, the second ratchet 821 is provided with a plurality of interconnected second unidirectional teeth portions 822. The second unidirectional teeth portion 822 includes a second inclined guiding surface 8221 and a second stop surface 8222. The second inclined guiding surface 8221 is connected to the second stop surface 8222. When the second pawl 83 is engaged with the second ratchet 821, the second ratchet 821 is rotatable in the forward direction through the second inclined guiding surface 8221, so that the second rope reel 82 is rotatable in the forward direction to constrict the second tightening space 71. In addition, the second stop surface 8222 prevents the second ratchet 821 from rotating in the reverse direction, so that the second rope reel 82 is not rotatable in the reverse direction to expand the second tightening space 71. Through the above structure, the arrangement of the second adjustment buckle 8 is effectively achieved. When the second tightening space 71 needs to be constricted, the second ratchet 821 is rotatable in the forward direction through the second inclined guiding surface 8221, so that users can move the second tightening rope body 7 in the forward direction for constriction. After the constriction is completed, the second stop surface 8222 is configured for preventing the second ratchet 821 from rotating in the reverse direction, so as to prevent the second tightening rope body 7 from moving in the reverse direction and expanding the second tightening space 71. Therefore, this allows the second tightening rope body 7 to tighten the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2. When it is necessary to expand the second tightening space 71, an external force greater than an elastic restoring force provided by the second elastic restoring device 84 can be applied to the second pawl 83, so that the second pawl 83 is separated from the second ratchet 821. In addition, the second rope reel 82 and the second ratchet 821 are rotatable in the reverse direction to allow the second tightening rope body 7 to move in the reverse direction to expand the second tightening space 71. The second elastic restoring device 84 is a second restoring spring. The second rope reel includes a third limiting plate 823, a fourth limiting plate 824, and a second rotating shaft 825. The second rotating shaft is rotatably connected to the second housing. A second limiting slot is provided between the third limiting plate and the fourth limiting plate. An inner surface of the third limiting plate and an inner surface of the fourth limiting plate are both provided with second locking protrusions 8231. The second locking protrusions are configured for locking the second tightening rope body in the second limiting slot, so as to prevent relative movement between the second tightening rope body and the third limiting plate. In addition, the second locking protrusions are also configured for preventing relative movement between the second tightening rope body and the fourth limiting plate.

[0069] In other embodiments, the second adjustment buckle 8 is a second elastic adjustment buckle 85. The second elastic adjustment buckle 85 includes a first adjusting housing 851 and a first elastic post 852. The first elastic post 852 is connected to the first adjusting housing 851. The first elastic post 852 is slidable inside the first adjusting housing 851 to a locked position or an unlocked position. A first opening 8511 is defined in the first adjusting housing 851. The first elastic post 852 is provided with a first spring 8521 and a second opening 8522. The second tightening rope body 7 is configured for passing through the first opening 8511 and the second opening 8522 in sequence. The first spring 8521 is configured for pushing the first elastic post 852 towards the locked position. The first opening 8511 and the second opening 8522 are staggered from each other, so that an inner wall of the first opening 8511 and an inner wall of the second opening 8522 are configured for squeezing and locking the second tightening rope body 7. In addition, the second tightening rope body 7 is not movable within the first opening 8511 and the second opening 8522, so as to fix the size of the second tightening space 71. When the first elastic post 852 is pushed to the unlocked position under an external force, the first opening 8511 and the second opening 8522 are aligned with each other. Moreover, the second tightening rope body 7 is movable within the first opening 8511 and the second opening 8522, so as to adjust the size of the second tightening space 71. Through the above structure, when it is necessary to adjust the second tightening space 71, the first elastic post 852 can be pushed towards the unlocked position, so that the first opening 8511 and the second opening 8522 are aligned with each other. In addition, the second tightening rope body 7 is movable within the first opening 8511 and the second opening 8522, thereby adjusting the size of the second tightening space 71. After adjustment, the first spring 8521 is configured for pushing the first elastic post 852 towards the locked position. Moreover, the first opening 8511 and the second opening 8522 are staggered from each other, so that the inner wall of the first opening 8511 and the inner wall of the second opening 8522 are configured for squeezing and locking the second tightening rope body 7. Further, the second tightening rope body 7 is not movable within the first opening 8511 and the second opening 8522, thereby fixing the size of the second tightening space 71.

[0070] In this embodiment, the swimming pool cover further includes third adjustment buckles 9. The third adjustment buckle 9 is connected to the second tightening rope body 7. The third adjustment buckle 9 is configured for adjusting the size of the second tightening space 71. The third adjustment buckle 9 and the second adjustment buckle 8 are different types of adjustment buckles. The third adjustment buckle 9 is a third elastic adjustment buckle 96. The third elastic adjustment buckle 96 includes a second adjusting housing 91 and a second elastic post 92. The second elastic post 92 is connected to the second adjusting housing 91, and the second elastic post 92 is slidable inside the second adjusting housing 91 to a locked position or an unlocked position. A third opening 911 is defined in the second adjusting housing 91. The second elastic post 92 is provided with a second spring 921 and a fourth opening 922. The second tightening rope body 7 passes through the third opening 911 and the fourth opening 922 in sequence, and the second spring 921 is configured for pushing the second elastic post 92 towards the locked position. In addition, the third opening 911 and the fourth opening 922 are staggered from each other, so that an inner wall of the third opening 911 and an inner wall of the fourth opening 922 are configured for squeezing and locking the second tightening rope body 7. In addition, the second fastening rope body 7 is not movable within the third opening 911 and the fourth opening 922, thereby fixing the size of the second tightening space 71. When the second elastic post 92 is pushed to the unlocked position under an external force, the third opening 911 and the fourth opening 922 are aligned with each other. In addition, the second tightening rope body 7 is movable within the third opening 911 and the fourth opening 922, thereby adjusting the size of the second tightening space 71. Through the above structure, when it is necessary to adjust the second tightening space 71, the second elastic post 92 can be pushed towards the unlocked position, so that the third opening 911 and the fourth opening 922 are aligned with each other. In addition, the second tightening rope body 7 is movable within the third opening 911 and the fourth opening 922, thereby adjusting the size of the second tightening space 71. After adjustment, the second spring 921 is configured for pushing the second elastic post 92 towards the locked position. In addition, the third opening 911 and the fourth opening 922 are staggered from each other, so that the inner wall of the third opening 911 and the inner wall of the fourth opening 922 are configured for squeezing and locking the second tightening rope body 7. Moreover, the second tightening rope body 7 is not movable inside the third opening 911 and the fourth opening 922, thereby fixing the size of the second tightening space 71.

[0071] In this embodiment, a total number of the third adjustment buckles 9 is multiple, and the plurality of third adjustment buckles 9 are arranged in sequence around the second tightening rope body 7. Through the above structure, the plurality of third adjustment buckles 9 are arranged in sequence around the second tightening rope body 7. Therefore, this can tighten the second tightening rope body 7 from various positions, so as to more quickly and evenly fasten the first outer edge 121 of the peripheral portion 12 onto the outer side wall 22 of the swimming pool 2.

[0072] In this embodiment, a width of the second threading hole 312 is greater than a width of the first threading hole 311. A width of the first adjustment buckle 6 is greater than the width of the first threading hole 311. Specifically, the width of the first threading hole 311 and the width of the second threading hole 312 are in a range from 0.1 mm to 20 cm. A width of the cover layer 1 is in a range from 6 feet to 36 feet. A thickness of the cover layer 1 is in a range from 0.1 mm to 10 mm. A width of the partition portion 5 is in a range from 1 mm to 5 mm. Through the above structure, the size is set reasonably, so that the swimming pool cover can be adapted to swimming pools 2 of different sizes. Moreover, since the width of the first adjustment buckle 6 is greater than the width of the first threading hole 311, the first adjustment buckle 6 can be prevented from passing through the first threading hole 311, thereby preventing a position of the first adjustment buckle 6 from changing. Specifically, a total number of the hanging lugs 3 is multiple, the plurality of hanging lugs 3 are arranged in sequence around the peripheral portion 12.

[0073] In this embodiment, the cover layer 1 is formed by stitching a plurality of cover sections by using sewing thread. The cover layer 1 is an oxford cloth cover layer 1 or a polyethylene woven cloth cover layer. The first tightening rope body 4 is a flexible first tightening rope body 4. Through the above structure, the arrangement of the cover layer 1 and the first tightening rope body 4 has been effectively achieved. Moreover, since the cover layer 1 is formed by stitching the plurality of cover sections 111 by using sewing thread, various sizes of swimming pool covers can be formed by stitching. Furthermore, the utilization rate of materials can be improved, thereby reducing production costs. Moreover, the oxford cloth cover layer 1 or the polyethylene woven cloth cover layer has a long service life and good dust prevention effect, thereby greatly improving user experience.

[0074] The above description only describes embodiments of the present disclosure, and is not intended to limit the present disclosure; various modifications and changes can be made to the present disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of the present disclosure are intended to be included within the scope of the present disclosure.

Claims

1. A swimming pool cover, comprising:a flexible cover layer, the flexible cover layer comprising a central portion and a peripheral portion, the peripheral portion being connected to the central portion, the central portion being configured for covering an opening of a swimming pool, and the peripheral portion being configured for surrounding an outer side wall of the swimming pool; the flexible cover layer being provided with a first rope threading hole;a first tightening rope body, the first tightening rope body being threaded through the first rope threading hole, and the first tightening rope body being configured for tightening the peripheral portion on the outer side wall of the swimming pool;a first adjustment buckle, wherein the first tightening rope body is connected to the first adjustment buckle, the first tightening rope body is threaded through the first rope threading hole, and the first tightening rope body is configured to surround to form a first tightening space; the first tightening space is configured for tightening the peripheral portion on the outer side wall of the swimming pool, and the first adjustment buckle is configured for adjusting a size of the first tightening space;the first adjustment buckle comprises a first housing and a first rope reel connected to the first housing, a mounting cavity is defined in the first housing, the first rope reel is capable of rotating within the mounting cavity, the first housing is provided with a third rope threading hole in communication with the mounting cavity, a first end of the first tightening rope body is connected to the first housing, a second end of the first tightening rope body is wound around the first rope reel after passing through the third rope threading hole, and the second end of the first tightening rope body subsequently extends out of the first housing via the third rope threading hole.

2. The swimming pool cover according to claim 1, wherein the first adjustment buckle is capable of switching between a locked state and an unlocked state, when the first adjustment buckle is in the locked state, the first adjustment buckle is capable of constricting the first tightening space and is prevented from expanding the first tightening space; when the first adjustment buckle is in the unlocked state, the first adjustment buckle is capable of constricting or expanding the first tightening space.

3. The swimming pool cover according to claim 1, wherein the first adjustment buckle is a first ratchet adjustment buckle, the first ratchet adjustment buckle comprises the first housing, the first rope reel, and a first pawl, the first rope reel extends to form a first ratchet, and the first pawl is movable between a locked position and an unlocked position; when the first pawl moves the locked position, the first pawl is engaged with the first ratchet, the first adjustment buckle is in the locked state, the first rope reel and the first ratchet are capable of rotating in a forward direction to constrict the first tightening space, and the first rope reel and the first ratchet are prevented from rotating in a reverse direction, so as to prevent expansion of the first tightening space; when the first pawl moves the unlocked position, the first pawl is detached from the first ratchet, the first adjustment buckle is in the unlocked state, the first rope reel and the first ratchet are capable of rotating in the forward direction to constrict the first tightening space, and the first rope reel and the first ratchet are capable of rotating in the reverse direction to expand the first tightening space.

4. The swimming pool cover according to claim 3, wherein the first ratchet adjustment buckle further comprises a first elastic restoring device, the first elastic restoring device is connected to the first housing, the first elastic restoring device abuts against the first pawl, and the first elastic restoring device is configured for pushing the first pawl towards the first ratchet, so as to make the first pawl in the locked position, so that the first pawl is engaged with the first ratchet.

5. The swimming pool cover according to claim 1, wherein the first ratchet extends from a bottom portion of the first rope reel, the first ratchet is provided with a plurality of first unidirectional teeth portions, the first unidirectional teeth portions are interconnected, the first unidirectional teeth portion comprises a first inclined guiding surface and a first stop surface, and the first inclined guiding surface is connected to the first stop surface; when the first pawl engages with the first ratchet, the first ratchet is capable of rotating in a forward direction via the first inclined guiding surface, so that the first rope reel is capable of rotating in the forward direction to constrict the first tightening space, and the first ratchet is prevented from rotating in the reverse direction by the first stop surface, so that the first rope reel is prevented from rotating in the reverse direction, so as to prevent expansion of the first tightening space.

6. The swimming pool cover according to claim 5, wherein the first pawl comprises a first guiding end, and the first guiding end comprises a third inclined guiding surface and a third stop surface connected to the third inclined guiding surface; when the first pawl engages with the first ratchet during forward rotation, the first inclined guiding surface abuts against the third inclined guiding surface; the first stop surface abuts against the third stop surface, so as to prevent the first ratchet from rotating in the reverse direction.

7. The swimming pool cover according to claim 5, wherein a first limiting groove is formed between two adjacent first unidirectional teeth portions, the first pawl comprises a first guiding end, and when the first pawl engages with the first ratchet, the first guiding end is positioned in the first limiting groove.

8. The swimming pool cover according to claim 7, wherein the first pawl further comprises a first limiting end, a second limiting groove is formed between the first limiting end and the first guiding end, and when the first pawl engages with the first ratchet, the first unidirectional teeth portion is positioned in the second limiting groove.

9. The swimming pool cover according to claim 8, wherein a shape of the first guiding end corresponds to that of the first limiting groove; a shape of the first unidirectional teeth portion corresponds to that of the second limiting groove; the first pawl and the first ratchet are located at an identical horizontal level.

10. The swimming pool cover according to claim 1, wherein the first housing is narrow at the front and wide at the back; the first housing comprises a front end face and a rear end face opposite to the front end face, and a width of the first housing gradually decreases from a middle portion of the first housing to the front end face of the first housing.

11. The swimming pool cover according toclaim 1, wherein the first housing comprises a front end face and a rear end face opposite to the front end face, the first housing comprises an upper housing and a lower housing connected under the upper housing, the upper housing is connected to the lower housing to form the mounting cavity, a rope-winding rod is arranged on an end of the mounting cavity adjacent to the front end face, the rope-winding rod is connected between the upper housing and the lower housing, the first end of the first tightening rope body is wound and fixed on the rope-winding rod, the second end of the first tightening rope body is wound around the first rope reel after passing through the third rope threading hole, and the second end of the first tightening rope body subsequently extends out of the first housing via the third rope threading hole; a first mounting groove is defined in an inner surface of the upper housing, the first rope reel is mounted in the first mounting groove, and an outer surface of the upper housing is provided with a first protruding portion corresponding to the first mounting groove; a second mounting groove is defined in an inner surface of the lower housing, the first rope reel is mounted in the second mounting groove, and an outer surface of the lower housing is provided with a second protruding portion corresponding to the second mounting groove.

12. The swimming pool cover according to claim 1, wherein the first housing comprises an upper housing and a lower housing connected under the upper housing, the upper housing is connected to the lower housing to form the mounting cavity, a rope-winding rod is arranged on an end of the mounting cavity adjacent to the front end face, the rope-winding rod is connected between the upper housing and the lower housing, the first end of the first tightening rope body is wound on the rope-winding rod via a metal locking buckle, the second end of the first tightening rope body is wound around the first rope reel after passing through the third rope threading hole, and the second end of the first tightening rope body subsequently extends out of the first housing via the third rope threading hole; the metal locking buckle comprises a mounting end and a rope-winding end, the mounting end is configured for hanging on the rope-winding rod, the first tightening rope body is wound on the rope-winding end, a width of the mounting end is less than that of the rope-winding end; the metal locking buckle comprises a retaining ring and a toggle post rotatably connected to the retaining ring, a locking buckle is arranged on a free end of the toggle post, and the retaining ring is provided with a locking recess configured for tightly engaging with the locking buckle.

13. The swimming pool cover according to claim 11, wherein the third rope threading hole is arranged on the rear end face; the rope-winding rod is arranged opposite to the third rope threading hole and is positioned at a middle of the third rope threading hole.

14. The swimming pool cover according to claim 11, wherein a first stop plate is arranged on an upper end of the rope-winding rod, a second stop plate is arranged on a lower end of the rope-winding rod, a first mounting hole is defined in the upper housing, and a second mounting hole is defined in the lower housing; when the upper housing is connected to the lower housing, the rope-winding rod is configured for penetrating through the first mounting hole and the second mounting hole, the first stop plate is positioned outside the upper housing, and the second stop plate is positioned outside the lower housing.

15. The swimming pool cover according to claim 11, wherein the first housing comprises a left end face and a right end face arranged opposite to the left end face, the upper housing is provided with a first connecting post that extends downward from a side of the upper housing adjacent to the left end face, the lower housing is provided with a first connecting engagement post that extends upward from a side of the lower housing adjacent to the left end face, the upper housing is provided with a second connecting post that extends downward from a side of the upper housing adjacent to the right end face, the lower housing is provided with a second connecting engagement post that extends upward from a side of the lower housing adjacent to the right end face, the first connecting post is connected to the first connecting engagement post, and the second connecting post is connected to and engaged with the second connecting engagement post, so that the upper housing is connected to the lower housing to form the mounting cavity.

16. The swimming pool cover according to claim 3, wherein the first pawl is connected to a pushing block, the first housing is provided with an avoiding recess in communication with the mounting cavity, at least one portion of the pushing block is exposed outside the first housing via the avoiding recess, and the first pawl is movable between the locked position and the unlocked position by pushing or releasing the pushing block; the pushing block and the first pawl are integrally formed.

17. The swimming pool cover according to claim 1, wherein the first rope reel comprises a first limiting plate, a second limiting plate, and a first rotating shaft; the first limiting plate and the second limiting plate are connected along an axial direction to form a first limiting groove, and the first rotating shaft is rotatably connected to the first housing; a first through hole is defined in a center of the first limiting plate, a second through hole is defined in a center of the second limiting plate, and the first rotating shaft is configured for passing through the first through hole and the second through hole in sequence, so that the first limiting plate is connected to the second limiting plate; a height of the first limiting groove gradually decreases from an outer edge of the first rope reel to a center of the first rope reel.

18. The swimming pool cover according to claim 17, wherein a plurality of first locking protrusions are arranged on a surface of the first limiting plate adjacent to the first limiting groove, and the first locking protrusions are distributed radially; a plurality of first locking protrusions distributed radially are arranged on a surface of the second limiting plate adjacent to the first limiting groove, the first locking protrusions are arranged radially, the first locking protrusions are configured for preventing relative movement between the first tightening rope body and the first limiting plate, and the first locking protrusions are configured for preventing relative movement between the first tightening rope body and the second limiting plate.

19. The swimming pool cover according to claim 1, wherein a length of the first housing is in a range from 15 mm to 100 mm, a width of the first housing is in a range from 10 mm to 100 mm, and a height of the first housing is in a range from 5mm to 100 mm; a length of the third rope threading hole is in a range from 2 mm to 50 mm, and a width of the third rope threading hole is in a range from 2 mm to 50 mm.

20. The swimming pool cover according to claim 3, wherein the first rope reel and the first ratchet are integrally formed; the first rope reel is a zinc alloy rope reel; the first pawl is a first zinc alloy pawl; the first housing is a first PA housing;the first tightening rope body is a first PP rope body, a first polyester rope body, or a first nylon rope body.

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