A cinching device and an article having the same

Abstract

This application provides a fastening device and an article having the fastening device, relating to the field of fastening device technology. The fastening device includes an adjusting assembly and a strap assembly. The adjusting assembly includes a base and an adjusting member, the adjusting member being movably mounted on the base and capable of being fixed relative to the base. A first sliding member is provided on the base along the adjusting direction, a second sliding member is provided on the adjusting member, and a first connecting portion is provided on the base or the adjusting member. The strap assembly has a second connecting portion and a strap portion, the second connecting portion being located at one end of the strap portion and detachably mounted on the first connecting portion; the end of the strap portion away from the second connecting portion is connected to the base, the adjusting member, or the article to be fastened. The fastening device of this application is simpler to operate, suitable for the elderly and children, aesthetically pleasing, flexible in use, and has a wide range of applications.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 2025215295837, filed on July 22, 2025, entitled "A fastening device and an article having a fastening device", the contents of which are incorporated herein by reference in whole or in part. Technical Field

[0003] This application relates to the field of fastening devices, and more specifically, to a fastening device and an article having a fastening device. Background Technology

[0004] Fastening devices, which allow for adjustment of tightness, are widely used on items that require fastening, such as clothing, shoes, and bags.

[0005] In related technologies, the length adjustment of straps on items with fastening devices is usually achieved by using D-rings, adjusting cords, or similar methods to control the extension or retraction of the straps. However, this adjustment method is not only inconvenient to operate, but also aesthetically unappealing when used on clothing, bags, or other items where visual appeal is important, affecting the overall appearance of the item. Furthermore, its usage is fixed and inflexible, limiting its applicability to a limited number of items. Utility Model Content

[0006] In order to at least address some of the deficiencies mentioned in the related art, this application provides a fastening device and an article having a fastening device.

[0007] To achieve the above objectives, this application provides a fastening device for adjusting the tightness of an item to be fastened. The fastening device includes an adjusting assembly and a strap assembly. The adjusting assembly includes a base and an adjusting member, the adjusting member being movably mounted on the base and capable of being fixed relative to the base. A first sliding member is provided on the base along the adjusting direction, and a second sliding member is provided on the adjusting member, the second sliding member being installed within the first sliding member and capable of sliding relative to the first sliding member along the adjusting direction; a first connecting portion is provided on the base or the adjusting member. The strap assembly includes a second connecting portion and a strap portion, the second connecting portion being located at one end of the strap portion and detachably mounted on the first connecting portion; the end of the strap portion away from the second connecting portion is connected to the base, the adjusting member, or the item to be fastened.

[0008] Furthermore, the first sliding member is configured as a sliding groove, and an adjusting tooth is provided on one side of the sliding groove. The second sliding member is configured as the adjusting gear, which is rotatably mounted on the adjusting member, installed in the sliding groove, and meshing with the adjusting tooth.

[0009] Furthermore, the tooth profile of the adjusting gear can be configured as spur teeth, helical teeth, double helical teeth, or cylindrical teeth. The tooth profile of the adjusting teeth in the slide groove corresponds to that of the adjusting gear and is configured as spur teeth, helical teeth, double helical teeth, or cylindrical teeth capable of meshing with the adjusting gear.

[0010] Furthermore, the base is provided with a sewing groove for sewing the base to the item to be fastened; the sewing groove is opened in the slide groove and does not contact the adjusting teeth.

[0011] Furthermore, the first connecting portion is disposed on the adjusting member, and the first connecting portion is provided with a first protrusion. The belt assembly includes a connecting plate, one end of which has a first groove, and the first protrusion can be engaged in the first groove; the strap portion is disposed on the end of the connecting plate away from the first groove.

[0012] Furthermore, the first connecting portion is disposed on the side of the base away from the adjusting member, and the first connecting portion includes a second protrusion, which is inclined towards the base along the adjusting direction of the adjusting assembly. The belt assembly includes a connecting plate, one end of which has a second groove, which corresponds to the second protrusion so that the second protrusion can be engaged in the second groove; the strap portion is disposed at the edge of the connecting plate.

[0013] Furthermore, two second protrusions are arranged side by side on the first connecting portion, and a first magnet is disposed between the two second protrusions. Two second grooves are correspondingly formed on the connecting plate, and a second magnet is disposed between the two second grooves. When the second protrusion is engaged in the second groove, the first magnet is attracted to the second magnet.

[0014] Furthermore, the first connecting portion is disposed on the side of the base away from the adjusting member, and a plug-in groove is formed on the first connecting portion. The belt assembly includes a plug connector, and when the plug connector is inserted into the plug-in groove, the plug connector and the plug-in groove can be relatively fixed.

[0015] Furthermore, a limiting groove is formed in the insertion slot away from the opening, and the insertion connector includes an elastic rod with a locking block at the end of the elastic rod; when the insertion connector is inserted into the insertion slot, the locking block is locked into the limiting groove.

[0016] Furthermore, the first connecting portion is disposed on the side of the base away from the adjusting member. The first connecting portion includes a third groove, the extension direction of which is perpendicular to the adjustment direction of the adjusting assembly, and the depth of the third groove gradually increases along the extension direction. The belt assembly includes a connecting plate, and the connecting plate is provided with a third protrusion. The third protrusion is correspondingly disposed with the third groove so that the third protrusion can be inserted into the third groove.

[0017] Furthermore, two third grooves are arranged side-by-side on the first connecting portion, and a magnet groove is provided between the two third grooves. A third magnet is disposed in the magnet groove, and the extending direction of the magnet groove is the same as the extending direction of the third groove. Two third protrusions are correspondingly provided on the connecting plate, and a magnet frame is provided between the two third protrusions. A fourth magnet is disposed in the magnet frame. When the third protrusion is engaged in the third groove, the magnet frame is engaged in the magnet groove, and the third magnet is attracted to the fourth magnet.

[0018] Furthermore, a blocking member is provided on the magnet slot, which can block part of the third groove in the vertical direction; an inclined groove is formed on the connecting plate near the magnet frame. When the third protrusion is inserted into the third groove, the blocking member is inserted into the inclined groove.

[0019] This application also provides an article with a fastening device, comprising an article body and the fastening device described in any of the above embodiments, wherein the fastening device is mounted on the article body. The article body includes shoes, clothing, bags, belts, hats, gloves, baby products, medical protective gear, and pet supplies.

[0020] With the above technical solution, when using the fastening device of this application, the adjusting member is installed on the base, and the first sliding member and the second sliding member cooperate to slide relative to each other. When the first connecting part is provided on the base, the end of the strap is connected to the adjusting member, that is, one end of the strap is detachably connected to the base through the second connecting part, and the other end of the strap is connected to the adjusting member. The strap is wrapped around the item to be fastened at a suitable position. By adjusting the relative position of the first sliding member and the second sliding member, the relative position of the base and the adjusting member can be adjusted, that is, the tightness of the item to be fastened can be adjusted.

[0021] When the first connecting part is provided on the adjusting member, the end of the strap part is provided on the item to be fastened or on the base. More specifically, when the strap part is provided on the item to be fastened, one end of the strap part is detachably connected to the adjusting member via the second connecting part, and the other end of the strap part is provided on the item to be fastened. In this case, by adjusting the relative position of the base and the adjusting member, the distance between the base and the connection point between the strap part and the item to be fastened can be adjusted, thereby achieving adjustment of the item to be fastened.

[0022] When the strap is mounted on the base, one end of the strap is detachably connected to the adjusting member via the second connecting member, and the other end of the strap is wound around the item to be secured and then connected to the base. At this time, by adjusting the relative position of the base and the adjusting member, the length of the strap wound around the item to be secured can be adjusted to achieve the adjustment of the item to be secured.

[0023] The fastening device of this application only requires adjusting the relative position of the base and the adjusting component during operation. After adjustment, the base and the adjusting component are fixed in place. It is simple to operate, easy to adjust, and user-friendly. The connection method of the first connecting part and the strap part can be flexibly adjusted according to different items, allowing the fastening device to be used flexibly on various items and in various application scenarios. Furthermore, in this fastening device, the adjusting component covers the base, and the adjusting assembly covers the installation position, so that after installation, the user can only see the adjusting component or the decorative part installed on the adjusting component, thus ensuring the overall aesthetics of the fastening device.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the fastening device provided in the first embodiment of this application from one perspective; Figure 2 A structural schematic diagram from another perspective of the fastening device provided in the first embodiment of this application; Figure 3 This is a schematic diagram of the structure of the fastening device provided in the second embodiment of this application from one perspective; Figure 4 A structural schematic diagram from another perspective of the fastening device provided in the second embodiment of this application; Figure 5 A structural schematic diagram from another perspective of the fastening device provided in the second embodiment of this application; Figure 6 This is a schematic diagram of the structure of the fastening device provided in the third embodiment of this application from one perspective; Figure 7 A structural schematic diagram of the fastening device provided in the third embodiment of this application from yet another perspective; Figure 8 A structural schematic diagram from another perspective of the fastening device provided in the third embodiment of this application; Figure 9 This is a schematic diagram of the fastening device provided in the third embodiment of this application from another perspective; Figure 10 This is a schematic diagram of the structure of the fastening device provided in the fourth embodiment of this application from one perspective; Figure 11 A structural schematic diagram from another perspective of the fastening device provided in the fourth embodiment of this application; Figure 12 A structural schematic diagram from another perspective of the fastening device provided in the fourth embodiment of this application; Figure 13 This is a schematic diagram of the structure of the base provided in the fifth embodiment of this application from one perspective; Figure 14 This is a schematic diagram of the structure of the fastening device provided in the sixth embodiment of this application from one perspective; Figure 15 This is a structural schematic diagram of different adjusting gears of the fastening device provided in the sixth embodiment of this application from one perspective.

[0027] icon: 100-Adjusting component; 110-Base; 111-Slide groove; 112-Adjusting tooth; 113-Sewing groove; 120-Adjusting element; 121-Webbing part; 122-Adjusting gear; 130-First connecting part; 131-First protrusion; 132-Second protrusion; 133-First magnet; 134-Third groove; 135-Magnet groove; 136-Blocking element; 200-Belt assembly; 210-Connecting plate; 211-Second magnet; 212-Elastic rod; 213-Snap-fit ​​block; 220-Belt part; 230-First groove; 240-Second groove; 250-Insertion groove; 251-Limiting groove; 260-Third protrusion; 270-Magnet frame. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] This embodiment provides a fastening device to solve the problems of fastening devices being difficult to adjust, having poor aesthetics, and having poor flexibility of use in related technologies.

[0032] Please see Figure 1 , Figure 2 and Figures 13 to 15 This embodiment provides a fastening device for adjusting the tightness of an item to be fastened. The fastening device includes an adjusting assembly 100 and a strap assembly 200. The adjusting assembly 100 includes a base 110 and an adjusting member 120. The adjusting member 120 is movably mounted on the base 110 and can be fixed relative to the base 110. A first sliding member is provided on the base 110 along the adjusting direction, and a second sliding member is provided on the adjusting member 120. The second sliding member is installed inside the first sliding member and can slide relative to the first sliding member along the adjusting direction. A first connecting portion 130 is provided on the base 110 or the adjusting member 120. The strap assembly 200 is provided with a second connecting portion and a strap portion 220. The second connecting portion is located at one end of the strap portion 220 and is detachably mounted on the first connecting portion 130. The end of the strap portion 220 away from the second connecting portion is connected to the base 110, the adjusting member 120, or the item to be fastened.

[0033] Specifically, when using the fastening device of this embodiment, the adjusting member 120 is installed on the base 110. By changing the relative position of the adjusting member 120 and the base 110, the relative position of the strap part 220 and the item to be fastened is changed. After adjusting to a suitable position, the adjusting member 120 and the base 110 are fixed relative to each other, thereby achieving the purpose of adjusting the tightness.

[0034] Changing the relative position of the adjusting member 120 and the base 110 essentially changes the relative position of the first sliding member and the second sliding member. The first sliding member is positioned on the base 110 along the adjustment direction, serving as the sliding basis for the second sliding member, which is then slidably mounted on the first sliding member. In actual use, the first and second sliding members can be configured as any existing structure or component as needed. For example, the first sliding member can be configured as a groove 111, and the second sliding member as a slider, which is slidably mounted within the groove 111 to achieve relative adjustment between the first and second sliding members. Alternatively, the first sliding member can be configured as a groove 111, with teeth on one side of the groove 111, and the second sliding member can be correspondingly configured as a gear. The gear meshes with the teeth, allowing the second sliding member to slide within the first sliding member along the adjustment direction when rotated, thus achieving the adjustment purpose. Of course, the actual structure of the first and second sliding members is not limited to the two described above; other suitable structures are also possible.

[0035] It is understood that, based on the above, the relative fixing method of the adjusting member 120 and the base 110 can also be adapted to different adjustment methods, and this embodiment does not limit this.

[0036] In detail regarding the usage of this embodiment, when the first connecting part 130 is disposed on the base 110, one end of the strap part 220 is provided with a second connecting part, which is detachably mounted on the first connecting part 130. The end of the strap part 220 away from the second connecting part is connected to the adjusting member 120, and the strap part 220 wraps around the position on the item to be tightened that needs to be tightened. In other words, at this time, one end of the strap part 220 is connected to the base 110, and the other end is connected to the adjusting member 120 to form a closed body, and the item to be tightened is placed between the closed bodies. When it is necessary to adjust the item to be tightened, the relative position of the adjusting member 120 and the base 110 is changed, that is, the length of the strap part 220 is changed, thereby changing the degree of tightening of the strap part 220 on the item to be tightened; when the length of the strap part 220 is in a suitable position, and the item to be tightened is tightened, the adjusting member 120 and the base 110 are fixed relative to each other, that is, the adjustment is completed.

[0037] When the first connecting part 130 is provided on the adjusting member 120, one end of the strap part 220 is detachably connected to the first connecting part 130 through the second connecting part, and the end of the strap part 220 away from the second connecting part can be connected to the base 110 or the item to be fastened.

[0038] When one end of the strap 220 is connected to the base 110, both ends of the strap 220 are connected to the base 110 and the adjusting member 120 respectively, forming a closed body between the base 110 and the adjusting member 120. The position of the item to be tightened is also set in the closed body. The tightening degree can be adjusted by changing the relative position of the adjusting member 120 and the base 110.

[0039] When one end of the strap 220 is connected to the item to be fastened, the base 110 is positioned on one side of the fastening location, and the end of the strap 220 is connected to the other side of the fastening location. During adjustment, the end of the strap 220 away from the item to be fastened is detachably connected to the adjusting member 120 via the second connecting part and the first connecting part 130. The adjusting member 120 is slidably mounted on the base 110. By changing the relative position of the adjusting member 120 and the base 110, the distance between the base 110 and the connection point between the strap 220 and the item to be fastened is changed, thereby adjusting the tightness of the item to be fastened.

[0040] The fastening device of this embodiment can flexibly connect the base 110 and the strap 220 to different positions according to different usage scenarios to meet the different fastening requirements of different items to be fastened. It is flexible and adaptable, with a wide range of applications. During use, only the relative positions of the adjusting member 120 and the base 110 need to be adjusted, making it simple to operate and convenient for the elderly and children. After installation, the adjusting member 120 will cover the base 110, and the base 110 will in turn cover the installation position of the fastening device on the item to be fastened, ensuring a more aesthetically pleasing overall appearance. In actual use, decorative parts can also be added to the adjusting member 120 to further enhance the aesthetics of this embodiment, allowing it to be applied to clothing, bags, and other items where aesthetics are important.

[0041] In one embodiment, such as Figures 13 to 15As shown, exemplarily, the first sliding member is configured as a groove 111, with an adjusting tooth 112 provided on one side within the groove 111. The second sliding member is configured as an adjusting gear 122, which is rotatably mounted on the adjusting member 120. The adjusting gear 122 is installed within the groove 111, and meshes with the adjusting tooth 112. The adjusting gear 122 rolls within the groove 111, and its rotational motion, through meshing with the adjusting tooth 112, is converted into linear motion of the adjusting member 120 along the groove 111. By rotating the adjusting gear 122, continuous and stepless movement of the adjusting member 120 can be achieved, allowing the user to adjust the tightness to the most comfortable and precise position, without the "gear" limitations of traditional D-ring buckles. The gear pitch determines the minimum adjustment step. By designing a small-module gear and fine adjusting teeth 112, millimeter-level or even finer adjustment precision can be achieved, meeting the requirements of items with extremely high fit requirements, such as high-end sports shoes and medical protective gear.

[0042] When the fastening device is subjected to tension, the tension is transmitted to the adjusting gear 122 through the adjusting member 120, attempting to make the gear slide along the slide groove 111. However, since the gear meshes with the single-sided rack, the tension will generate a tendency to press the gear against the toothless side of the slide groove 111, thereby increasing the friction between the gear and the wall of the slide groove 111. At the same time, the meshing of the gear teeth and the rack teeth also provides mechanical resistance. The single-sided rack also enables the gear to press more effectively against the toothless side of the slide groove 111 wall when under force, maximizing the wedging effect and friction, thereby achieving reliable self-locking. In actual use, by setting the shape and tooth spacing of the gear and teeth, it can be effectively ensured that the adjusting member 120 and the base 110 can only move relative to each other when adjusted by the user with external force, and can be relatively self-locked when there is no external force.

[0043] The adjustment process involves the gear rolling on the rack, where the friction is much less than the sliding friction of the slider within the groove 111. Therefore, the adjustment feels smoother. In this embodiment, the adjusting member 120 can be equipped with a lever for rotating the adjusting gear 122, forming a lever that allows the user to drive the gear with less force, thereby easily adjusting a larger tightening force. This smooth and effortless operation makes it easy for even elderly people or children with limited strength to adjust the tightness.

[0044] In one embodiment, such as Figures 13 to 15 As shown, for example, the tooth profile of the adjusting gear 122 can be set as spur teeth, helical teeth, double helical teeth, or cylindrical teeth. The tooth profile of the adjusting teeth 112 in the slide groove 111 corresponds to that of the adjusting gear 122 and is set as spur teeth, helical teeth, double helical teeth, or cylindrical teeth that can mesh with the adjusting gear 122.

[0045] In detail, spur gears and racks have the most mature, simplest, and lowest-cost manufacturing processes, making them suitable for mass production. During meshing, only normal force is applied, with no axial component force, resulting in minimal energy loss. It is easy to ensure tooth profile accuracy, guaranteeing precise adjustment. They are suitable for everyday items that are cost-sensitive, require high adjustment precision, but do not demand high levels of noise and extremely smooth operation, such as ordinary backpacks and casual shoes.

[0046] Helical teeth engage and disengage gradually, resulting in a smooth and continuous meshing process that significantly reduces impact and vibration, making adjustments extremely smooth and quiet. Simultaneously, more teeth participate in the meshing, leading to higher overlap and more even load distribution, enabling the adjustment to withstand greater tightening forces. Due to the smooth meshing, the overall dynamic performance of the adjustment process is improved. This makes it suitable for high-end products with extremely high requirements for handling and quiet operation, such as high-end athletic shoes, precision instrument bags, and medical protective gear.

[0047] Double helical gears consist of two sets of helical teeth facing opposite directions, resembling a fishbone. The axial forces generated by the two sets of helical teeth are equal in magnitude and opposite in direction, canceling each other out. Therefore, no additional thrust bearing is needed, simplifying the structure. They also feature high overlap ratio, high load capacity, high stability, and low noise. Furthermore, the elimination of axial force handling allows for a more compact overall design. However, they also present the problem of highly complex manufacturing and high cost. They are suitable for special applications with extreme performance requirements and where cost is not a primary concern.

[0048] Adjusting gear 122 and adjusting tooth 112 can be configured as round teeth, or adjusting gear 122 can be a worm and adjusting tooth 112 can be a worm wheel. Worm gear drives have inherent self-locking characteristics, making reverse drive virtually impossible and providing the highest level of anti-loosening protection. A small worm rotation angle can produce a large linear displacement, allowing for very precise adjustment. The meshing is a sliding contact, resulting in very smooth operation. However, worm gear drives have lower transmission efficiency and are more complex to manufacture. They are suitable for applications with extremely high safety requirements and where loosening is absolutely impossible, such as safety belts, mountaineering equipment, and heavy industrial bags.

[0049] In one embodiment, such as Figures 13 to 15 As shown, for example, the base 110 is provided with a sewing groove 113 for sewing the base 110 to the item to be fastened; the sewing groove 113 is formed within the slide groove 111 and does not contact the adjusting teeth 112. Traditional installation methods, such as drilling holes on the surface or edge of the base 110, will leave obvious seams and needle holes, affecting the product's appearance. The sewing groove 113 is located inside the slide groove 111, and the stitching is completely hidden under the structure of the slide groove 111. From the outside and top surface of the base 110, no stitching marks are visible, and the entire device surface is smooth and complete, achieving a "seamless" or "invisible installation" effect. This allows the fastening device to blend seamlessly with clothing, bags, etc., resulting in a simple, modern, and high-end appearance, meeting the needs of products with high aesthetic requirements.

[0050] The seam groove 113 is cut into the slide groove 111, which serves as the main load-bearing structure, and the stitching is directly fixed to the strongest part. The stitching point is located in the central area of ​​the base 110. When the tie part 220 is under stress, the tension can be evenly transmitted to the stitching line through the base 110, avoiding stress concentration at the edges. Compared to sewing on thin edges, this method of sewing in the thick slide groove 111 area provides stronger tensile and tear resistance and a more secure installation.

[0051] The sewing groove 113 is used for mounting and fixing, while the adjusting gear 112 is used for functional transmission. The two are completely isolated in space. This ensures that the stitching thread, thread ends, or minor deformations caused by sewing will not enter the area of ​​the adjusting gear 112, thus eliminating the risk of the thread getting stuck between the gear and the rack. When the adjusting gear 122 rolls within the groove 111, its path is completely clean and unobstructed, ensuring absolutely smooth and reliable adjustment operation.

[0052] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the first connecting part 130 is disposed on the adjusting member 120, and the first connecting part 130 is provided with a first protrusion 131. The belt assembly 200 includes a connecting plate 210, one end of which is provided with a first groove 230, and the first protrusion 131 can be engaged in the first groove 230; the strap part 220 is disposed on the end of the connecting plate 210 away from the first groove 230.

[0053] In this embodiment, the first protrusion 131 is directly engaged with the first groove 230 on the connecting plate 210 to connect the belt assembly 200 and the adjusting member 120. The connection method is simple and easy to operate. As long as the protrusion and groove fit well, the connection remains stable even when the belt is under tension, and it is not easy to fall off. Compared with flat bonding or magnetic attraction, the interlocking structure of the protrusion and groove is less likely to slip off when subjected to lateral force.

[0054] In one embodiment, exemplarily, such as Figures 3 to 5 As shown, the first connecting portion 130 is disposed on the side of the base 110 away from the adjusting member 120. The first connecting portion 130 includes a second protrusion 132, which is inclined towards the base 110 along the adjusting direction of the adjusting assembly 100. The belt assembly 200 includes a connecting plate 210, one end of which has a second groove 240. The second groove 240 is correspondingly disposed to the second protrusion 132, so that the second protrusion 132 can be engaged in the second groove 240. The strap portion 220 is disposed at the edge of the connecting plate 210.

[0055] When the inclined second protrusion 132 engages with the second groove 240, a self-locking effect is created. This means that when the strap is subjected to tension, such as when worn by a user or subjected to force by an object, the strap assembly 200 will be tightened along the direction of the tension. At this time, the inclined protrusion will embed more deeply into the groove, enhancing the connection's strength. Compared to a vertically positioned protrusion, the inclined structure better resists axial pull-out forces, preventing the strap assembly 200 from accidentally detaching. The inclined protrusion, in conjunction with the groove, can also disperse stress concentration points, preventing excessive localized stress that could lead to material fatigue or fracture.

[0056] Please continue reading. Figures 3 to 5 For example, two second protrusions 132 are arranged side by side on the first connecting portion 130, and a first magnet 133 is disposed between the two second protrusions 132. Two corresponding second grooves 240 are formed on the connecting plate 210, and a second magnet 211 is disposed between the two second grooves 240. When the second protrusion 132 is engaged within the second groove 240, the first magnet 133 is attracted to the second magnet 211. The mechanical engagement between the second protrusion 132 and the second groove 240 provides structural positioning and load-bearing, while the magnetic attraction between the first magnet 133 and the second magnet 211 provides additional axial locking force. This dual locking mechanism enhances connection stability and resistance to disengagement. When the strip is subjected to significant tension or vibration, the magnetic attraction effectively prevents accidental disengagement due to vibration or impact.

[0057] For the user, the magnetic attraction provides a noticeable "snap" during installation, indicating that the device is correctly installed. Even when the protrusion is not fully engaged with the edge of the groove, the magnetic force can correct the relative position of the belt assembly 200 and the base 110, ensuring a good fit between the protrusion and the groove.

[0058] In one embodiment, exemplarily, such as Figures 6 to 9 As shown, the first connecting part 130 is disposed on the side of the base 110 away from the adjusting member 120, and a plug-in groove 250 is provided on the first connecting part 130. The belt assembly 200 includes a plug connector. When the plug connector is inserted into the plug-in groove 250, the plug connector and the plug-in groove 250 can be relatively fixed. The connection and disassembly of the plug connector and the plug-in groove 250 are simple and convenient. The plug-in structure can better resist lateral shear force and axial tensile force. Compared with simple snap-fit ​​or magnetic connection, it can better prevent the belt assembly 200 from falling off due to external force. The "embedded" connection formed after the plug connector is inserted into the plug-in groove 250 makes the force distribution of the connection part more uniform and the structural strength higher.

[0059] Especially when used in packaging in this embodiment, the matching of the connector and the connector slot 250 is not only simple and easy to operate, but also makes the overall appearance of this embodiment more suitable for the packaging, making the packaging look more harmonious and improving the aesthetics of this embodiment.

[0060] Please continue reading. Figures 6 to 9 For example, a limiting groove 251 is provided in the insertion slot 250 at a position away from the opening. The insertion connector includes an elastic rod 212, and a locking block 213 is provided at the end of the elastic rod 212. When the insertion connector is inserted into the insertion slot 250, the locking block 213 is locked into the limiting groove 251. In use, pressing the elastic rod 212 causes the elastic rod 212 to deform, thereby allowing the locking block 213 to extend into the insertion slot 250 and extend along the insertion slot 250 until the locking block 213 extends into the limiting groove 251. After the locking block 213 extends into the limiting groove 251, the locking block 213 is no longer restricted by the insertion slot 250, the elastic rod 212 deforms and returns to its original shape, thereby allowing the locking block 213 to fall into the limiting groove 251. The limiting groove 251 limits the locking block 213, that is, the insertion slot 250 limits the insertion connector.

[0061] When it is necessary to remove the connector, press the elastic rod 212 to deform it, thereby causing the locking block 213 to disengage from the limiting groove 251, allowing the connector to be removed normally from the connector groove 250. In this embodiment, this physical constraint makes the connection more stable and reliable.

[0062] For example, such as Figure 7 As shown, a webbing section 121 is also provided between the base 110 and the adjusting member 120. Any end of the strip can be fixed to the webbing section 121 by means of sewing, gluing, pressing, etc., so as to improve the flexibility of use in this embodiment.

[0063] In one embodiment, exemplarily, such as Figures 10 to 12 As shown, the first connecting portion 130 is disposed on the side of the base 110 away from the adjusting member 120. The first connecting portion 130 includes a third groove 134, the extension direction of which is perpendicular to the adjustment direction of the adjusting assembly 100, and the depth of the third groove 134 gradually increases along the extension direction. The belt assembly 200 includes a connecting plate 210, on which a third protrusion 260 is provided. The third protrusion 260 is correspondingly disposed with the third groove 134 so that the third protrusion 260 can be inserted into the third groove 134. As the third protrusion 260 slides in along the extension direction of the groove, the contact pressure between the protrusion and the groove increases as the groove depth gradually increases, forming a self-locking effect. This structure can provide strong pull-out resistance and anti-loosening capability without additional locking devices.

[0064] The force on the adjusting component 100 is usually a force along the adjusting direction. In this embodiment, the third groove 134 is set perpendicular to the adjusting direction, that is, the third groove 134 is set laterally. This not only makes the space in this embodiment more reasonable, but also ensures that the third groove 134 and the third protrusion 260 will not disengage due to the force in the adjusting direction during the fit, further ensuring reliable assembly.

[0065] The protrusions, extending deep into the grooves, create a large contact area and friction, effectively withstanding forces from multiple directions. This makes this embodiment particularly suitable for applications requiring high stability and strong load-bearing capacity, such as sports protective gear, mountaineering equipment, and safety harnesses.

[0066] The gradually deepening groove design allows users to naturally feel the "sliding in" and "finishing" sensation during the insertion process, which helps with quick alignment and installation. It also reduces connection instability caused by assembly errors, improving the user experience.

[0067] Please continue reading. Figures 10 to 12 For example, two third grooves 134 are arranged side by side on the first connecting portion 130. A magnet groove 135 is provided between the two third grooves 134, and a third magnet is provided in the magnet groove 135. The extending direction of the magnet groove 135 is the same as the extending direction of the third groove 134. Two third protrusions 260 are correspondingly provided on the connecting plate 210. A magnet frame 270 is provided between the two third protrusions 260, and a fourth magnet is provided in the magnet frame 270. When the third protrusion 260 is engaged in the third groove 134, the magnet frame 270 is engaged in the magnet groove 135, and the third magnet is attracted to the fourth magnet. The dual locking mechanism enhances the fixing effect. The protrusions and grooves provide rigid support and positioning, while the magnetic attraction provides additional axial locking force. Even under the action of external forces such as vibration, impact, or pulling, it can effectively prevent accidental detachment.

[0068] The structure of parallel double grooves and double protrusions can effectively resist lateral shear force, and the middle magnet groove 135 and magnet frame 270 further enhance the ability to resist torsion and lateral displacement.

[0069] The automatic alignment effect is significant. When approaching the connection position, the magnet guides the magnet holder 270 to automatically align with the magnet slot 135, enhancing the user's sense of "position" and improving assembly efficiency. Insertion and removal operations can be completed with one hand, without the need for special force or angle adjustments. The operation is intuitive and effortless, making it suitable for applications like clothing, bags, shoes, and helmets that require frequent disassembly and assembly, as described in this embodiment.

[0070] Please continue reading. Figures 10 to 12A blocking element 136 is provided on the magnet slot 135, which can block part of the third groove 134 in the vertical direction; an inclined groove is formed on the connecting plate 210 near the magnet frame 270. When the third protrusion 260 is inserted into the third groove 134, the blocking element 136 is inserted into the inclined groove. After the blocking element 136 is inserted into the inclined groove, it forms a physical blocking structure, which restricts the third protrusion 260 from sliding axially out of the third groove 134. Even under extreme vibration or tension, it can effectively prevent the belt assembly 200 from falling off due to magnetic failure or loosening of the insertion, which significantly improves the safety and reliability of the connection.

[0071] After the blocking member 136 is inserted into the inclined slot, it not only restricts axial movement, but also increases the constraints in the lateral and rotational directions. The inclined slot angle design can optimize the force distribution, so that the connection structure can better resist lateral forces and torques, enhance the structural strength of this embodiment, and is suitable for dynamic load environments.

[0072] This embodiment also provides an article with a fastening device, including an article body and the fastening device from any of the above embodiments, the fastening device being mounted on the article body. The article body includes shoes, clothing, bags, belts, hats, gloves, baby products, medical protective gear, and pet supplies.

[0073] The article with a fastening device in this embodiment includes the fastening device in any of the above embodiments, and thus possesses all the beneficial effects of a fastening device, which will not be elaborated further here.

[0074] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tightening device for slack adjustment of an article to be tightened, characterized by, The fastening device includes: An adjustment assembly (100) includes a base (110) and an adjustment member (120), the adjustment member (120) being movably mounted on the base (110) and being able to be fixed relative to the base (110); The base (110) is provided with a first sliding member along the adjustment direction, and the adjustment member (120) is provided with a second sliding member. The second sliding member is installed inside the first sliding member, and the second sliding member can slide relative to the first sliding member along the adjustment direction; the base (110) or the adjustment member (120) is provided with a first connecting part (130). The belt assembly (200) is provided with a second connecting part and a strap part (220). The second connecting part is located at one end of the strap part (220) and is detachably mounted on the first connecting part (130). The end of the strap part (220) away from the second connecting part is connected to the base (110), the adjusting member (120), or the item to be fastened.

2. The cinching device of claim 1, wherein, The first sliding member is configured as a sliding groove (111), and an adjusting tooth (112) is provided on one side of the sliding groove (111). The second sliding member is configured as an adjusting gear (122), which is rotatably mounted on the adjusting member (120). The adjusting gear (122) is installed in the sliding groove (111), and the adjusting gear (122) meshes with the adjusting tooth (112).

3. The tie-down device of claim 2, wherein, The tooth profile of the adjusting gear (122) can be set as spur teeth, helical teeth, double helical teeth or cylindrical teeth; The tooth profile of the adjusting tooth (112) in the groove (111) corresponds to that of the adjusting gear (122) and is configured as a straight tooth, helical tooth, double helical tooth or cylindrical tooth that can mesh with the adjusting gear (122).

4. The tie-down device of claim 2, wherein, The base (110) is provided with a sewing groove (113) for sewing the base (110) to the item to be fastened; the sewing groove (113) is opened in the slide groove (111) and the sewing groove (113) does not contact the adjusting tooth (112).

5. The tie-down device of claim 1, wherein, The first connecting part (130) is disposed on the adjusting member (120), and the first connecting part (130) is provided with a first protrusion (131). The belt assembly (200) includes a connecting plate (210), one end of which has a first groove (230), and the first protrusion (131) can be engaged in the first groove (230); the strap portion (220) is disposed on the connecting plate (210) at one end away from the first groove (230).

6. The tie-down device of claim 1, wherein, The first connecting part (130) is disposed on the side of the base (110) away from the adjusting member (120). The first connecting part (130) includes a second protrusion (132). The second protrusion (132) is inclined towards the base (110) along the adjusting direction of the adjusting assembly (100). The belt assembly (200) includes a connecting plate (210), one end of which is provided with a second groove (240), the second groove (240) being correspondingly provided with a second protrusion (132) so that the second protrusion (132) can be engaged in the second groove (240); the strap portion (220) is provided at the edge of the connecting plate (210); Two second protrusions (132) are arranged side by side on the first connecting part (130), and a first magnet (133) is arranged between the two second protrusions (132). Two second grooves (240) are correspondingly provided on the connecting plate (210), and a second magnet (211) is provided between the two second grooves (240). When the second protrusion (132) is engaged in the second groove (240), the first magnet (133) is attracted to the second magnet (211).

7. The tie-down device of claim 1, wherein, The first connecting part (130) is disposed on the side of the base (110) away from the adjusting member (120), and the first connecting part (130) is provided with a plug-in groove (250). The belt assembly (200) includes a connector, which can be fixed relative to the connector when it is inserted into the connector slot (250); A limiting groove (251) is provided in the insertion groove (250) at a position away from the opening. The insertion joint includes an elastic rod (212), and a locking block (213) is provided at the end of the elastic rod (212). When the insertion joint is inserted into the insertion groove (250), the locking block (213) is locked into the limiting groove (251).

8. The tie-down device of claim 1, wherein, The first connecting part (130) is disposed on the side of the base (110) away from the adjusting member (120). The first connecting part (130) includes a third groove (134). The extension direction of the third groove (134) is perpendicular to the adjustment direction of the adjusting component (100), and the depth of the third groove (134) gradually increases along the extension direction. The belt assembly (200) includes a connecting plate (210) on which a third protrusion (260) is provided. The third protrusion (260) is correspondingly provided with the third groove (134) so ​​that the third protrusion (260) can be inserted into the third groove (134).

9. The tie-down device of claim 8, wherein, Two third grooves (134) are arranged side by side on the first connecting part (130). A magnet groove (135) is arranged between the two third grooves (134). A third magnet is arranged in the magnet groove (135). The extension direction of the magnet groove (135) is the same as the extension direction of the third groove (134). The connecting plate (210) is provided with two third protrusions (260), and a magnet frame (270) is provided between the two third protrusions (260). A fourth magnet is provided in the magnet frame (270). When the third protrusion (260) is engaged in the third groove (134), the magnet frame (270) is engaged in the magnet slot (135), and the third magnet is attracted to the fourth magnet. A blocking member (136) is provided on the magnet slot (135), and the blocking member (136) can block part of the third groove (134) in the vertical direction; an inclined groove is provided on the connecting plate (210) near the magnet frame (270); When the third protrusion (260) is inserted into the third groove (134), the blocking member (136) is inserted into the inclined groove.

10. An article having a cinching device, characterized by The article includes the article body and the fastening device as described in any one of claims 1 to 9, wherein the fastening device is mounted on the article body; The items themselves include shoes, clothes, bags, belts, hats, gloves, baby products, medical protective gear, and pet supplies.

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