Flexible magnetic watchband, preparation method thereof and intelligent wearable equipment

Abstract

The invention relates to a flexible magnetic watchband, a preparation method thereof and intelligent wearable equipment. One end of a main watchband is used for being connected with an equipment main body; one end of the secondary watchband is used for being connected with the equipment main body; each of the main watchband and the auxiliary watchband comprises a first non-magnetic rubber, a magnetic rubber and a second non-magnetic rubber, the magnetic rubber is stacked between the first non-magnetic rubber and the second non-magnetic rubber, the first non-magnetic rubber and the second non-magnetic rubber are connected in a sealing manner to realize packaging of the magnetic rubber, and the magnetic rubber is sealed by means of a magnetic attraction force provided by the magnetic rubber. And the main watchband and the auxiliary watchband are detachably and magnetically connected. The magnetic rubber in the inner layer provides a magnetic attraction force, and the first non-magnetic rubber and the second non-magnetic rubber in the outer layer provide physical protection and appearance modification, so that the magnetic rubber is well prevented from being exposed in the environment to be oxidized and corroded and magnetic powder is prevented from falling off, and meanwhile, the magnetic rubber is also prevented from being in contact with sweat to accelerate degradation; and the service life and the wearing reliability are influenced by the reduction of the magnetic attraction force.

Description

Technical Field

[0001] The present application relates to the technical field of wearable device accessories, and in particular to a flexible magnetic watch strap, a preparation method thereof, and a smart wearable device. Background Art

[0002] Smart wearable devices are a general term for products that apply wearable technology to the intelligent design of everyday items (such as watches, glasses, and clothing). They offer functions such as health monitoring, communication assistance, and fitness tracking. In the field of smart wearable devices, magnetic watchbands offer a convenient connection solution, and their core technology focuses on the stability of the magnetic substrate and the rationality of the structural design.

[0003] Currently, mainstream designs for magnetic watchbands primarily utilize sintered NdFeB or ferrite as the magnetic substrate. While sintered NdFeB has a high magnetic energy product, it is susceptible to irreversible magnetic degradation at high temperatures when the magnet's intrinsic coercivity is low. Sintered NdFeB magnets are hard and brittle, making them less than ideal for wearing comfort and prone to cracking due to sudden external impacts. While ferrites are heat-resistant, their magnetic energy product is only about one-third that of sintered NdFeB, resulting in insufficient magnetic attraction, impacting both the wearing experience and device safety. Furthermore, conventional designs often expose the magnetic material directly, potentially leading to oxidation corrosion and shedding of surface magnetic powder over long-term use, resulting in a decrease in magnetic attraction. Summary of the Invention

[0004] Based on this, it is necessary to provide a flexible magnetic watch strap, a preparation method thereof, and a smart wearable device to address the problems of poor wearing comfort and reduced magnetic attraction that affect service life of traditional technologies.

[0005] In a first aspect of the present application, a flexible magnetic watch strap is provided, comprising:

[0006] a main strap, one end of which is used to connect to the device body; and

[0007] A secondary strap, one end of which is used to connect to the device body; wherein, the main strap and the secondary strap both include a first non-magnetic rubber, a magnetic rubber, and a second non-magnetic rubber, the magnetic rubber is stacked between the first non-magnetic rubber and the second non-magnetic rubber, the first non-magnetic rubber and the second non-magnetic rubber are sealed to achieve the encapsulation of the magnetic rubber, and the main strap and the secondary strap are detachably magnetically connected by means of the magnetic attraction provided by the magnetic rubber.

[0008] The flexible magnetic watchband of the present solution consists of a main watchband and a sub-watchband, one end of the main watchband and one end of the sub-watchband are used to connect to the device body, and are connected and fixed by the magnetic attraction of the main watchband and the sub-watchband when in use, so as to be worn on the user; furthermore, the main watchband and the sub-watchband are both assembled by a first non-magnetic rubber, a magnetic rubber and a second non-magnetic rubber, so that the main watchband and the sub-watchband have good flexibility with the help of the characteristics of the colloid, which is conducive to improving the comfort and experience of wearing; and the magnetic rubber in the inner layer provides magnetic attraction, while the first non-magnetic rubber and the second non-magnetic rubber in the outer layer provide physical protection and appearance modification, which effectively prevents the magnetic rubber from being exposed to the environment and being oxidized and corroded and the magnetic powder from falling off, and also prevents the magnetic rubber from being accelerated deteriorated by contact with sweat, resulting in a decrease in magnetic attraction and affecting the service life and wearing reliability.

[0009] The technical solution of this application is further described below:

[0010] In one embodiment, the first non-magnetic rubber, the magnetic rubber and the second non-magnetic rubber are formed into an integral structure by a step-by-step hot pressing co-vulcanization process.

[0011] In one embodiment, the first non-magnetic rubber and the second non-magnetic rubber are made of one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

[0012] In one embodiment, the magnetic rubber is made by mixing rare earth permanent magnetic powder and rubber binder;

[0013] The rare earth permanent magnet powder is one of samarium cobalt series, neodymium iron boron series, cerium iron boron series, lanthanum cerium iron boron series, cerium iron nitrogen series, cerium cobalt series, and samarium iron nitrogen series, or a mixture of at least two or more thereof;

[0014] The rubber adhesive is one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

[0015] In one embodiment, the magnetic rubber adopts a continuous plane structure, and the magnetic rubber is formed with multiple N poles and multiple S poles using a double-sided multi-pole magnetization process, and the N poles and the S poles are alternately arranged linearly along the length direction of the magnetic rubber;

[0016] The length direction of the magnetic rubber is consistent with the direction of relative expansion and contraction sliding of the main strap and the auxiliary strap when they are magnetically connected.

[0017] In one embodiment, a first connector is provided at one end of the main strap, and a second connector is provided at one end of the auxiliary strap, and both the first connector and the second connector are used for mounting on the device body;

[0018] The first connecting body is provided with a first mounting through hole, in which the first rotating shaft is installed; the second connecting body is provided with a second mounting through hole, in which the second rotating shaft is installed.

[0019] In one embodiment, a limiting hole is formed at one end of the secondary strap away from the second connector, and the limiting hole is used for threading and assembling with the main strap;

[0020] The hole wall of the limiting hole is provided with magnetic colloid.

[0021] In one embodiment, a light strip is embedded in at least one side of the main strap in the width direction and / or at least one side of the auxiliary strap in the width direction, and the light strip is electrically connected to the power signal terminals at the ends of the main strap and the auxiliary strap. When the main strap and the auxiliary strap are installed with the device body, the power signal terminals are automatically electrically connected to the power supply terminals on the device body; and / or,

[0022] The surface of the main strap that contacts the user's skin and / or the side of the auxiliary strap that contacts the user's skin are provided with spherical protrusions arranged in an array structure.

[0023] In a second aspect of the present application, a method for preparing the flexible magnetic watch strap described in any of the above embodiments is provided, comprising the following steps:

[0024] Selecting and installing insert modules suitable for the cavity size on the first hot pressing mold and the second hot pressing mold;

[0025] Placing the magnetic rubber compound in the cavity of the first hot pressing mold, hot pressing and vulcanizing the compound to form a magnetic rubber core layer, then removing the magnetic rubber core layer and cooling the core layer to set the magnetic rubber core layer;

[0026] placing the non-magnetic rubber compound in a second hot pressing mold cavity and performing hot pressing semi-vulcanization shaping to obtain a semi-vulcanized first non-magnetic rubber and a semi-vulcanized second non-magnetic rubber;

[0027] The middle plate mold of the second hot pressing mold is removed, and the magnetic rubber core layer is placed into the groove of the semi-vulcanized first non-magnetic rubber;

[0028] The semi-vulcanized first non-magnetic rubber, the magnetic rubber core layer and the semi-vulcanized second non-magnetic rubber are co-vulcanized and formed under hot pressing conditions in a mold, then taken out and cooled to shape, and magnetized on a flat polycrystalline magnetized plate to obtain a finished flexible magnetic watch strap.

[0029] In a third aspect of the present application, there is further provided a smart wearable device, comprising:

[0030] the device body; and

[0031] The flexible magnetic strap as described in any of the above embodiments is connected to the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the smart wearable device described in one embodiment of the present application.

[0035] Figure 2 Schematic diagram of the assembly structure of the main strap of an embodiment.

[0036] Figure 3 Schematic diagram of the partial explosion structure of the main strap.

[0037] Figure 4 Schematic diagram of the assembly structure of the auxiliary watchband according to one embodiment.

[0038] Figure 5 Schematic diagram of the partial explosion structure of the auxiliary strap.

[0039] Figure 6 Schematic diagram of the exploded structure of the main strap and the secondary strap.

[0040] Figure 7 It is a schematic diagram of the partial structure of the first hot pressing mold or the second hot pressing mold.

[0041] Description of reference numerals:

[0042] 100. Smart wearable device; 10. Flexible magnetic strap; 11. Main strap; 111. First connector; 1111. First mounting hole; 12. Secondary strap; 121. Second connector; 1211. Second mounting hole; 122. Positioning hole; 123. Magnetic colloid; 10a. First non-magnetic rubber; 10b. Second non-magnetic rubber; 10c. Magnetic rubber; 20. Device body; 30. Template; 40. Insert. DETAILED DESCRIPTION

[0043] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0049] An embodiment of the present application provides a smart wearable device 100, which can be a watch, glasses, necklace, etc., and is designed with functions such as health monitoring, communication assistance, and sports tracking, so as to provide monitoring and reminder services to users, greatly improving the experience of work, study, entertainment and other activities.

[0050] To facilitate description and understanding of the technical solution, this application uses the smart wearable device 100 as an example of a watch.

[0051] For example, Figure 1 As shown, the smart wearable device 100 includes a device body 20 and a flexible magnetic strap 10, which is connected to the device body 20. It is understood that when the smart wearable device 100 is a watch, the device body 20 is the watch face. The flexible magnetic strap 10 is connected to the watch face, and then the flexible magnetic strap 10 is worn on the user's body, such as the wrist, to achieve the smart wearable device 100 being worn on the user's body.

[0052] See Figures 2 to 5 , is a flexible magnetic watch strap 10 shown in an embodiment of the present application, comprising a main watch strap 11 and a secondary watch strap 12. Specifically, Figure 2 The main strap 11 is shown. Figure 4 What is shown is the secondary strap 12; that is, the flexible magnetic strap 10 of the present application is a split structure, consisting of an independent main strap 11 and a secondary strap 12.

[0053] One end of the main strap 11 is used to connect to the device body 20; one end of the secondary strap 12 is used to connect to the device body 20 to achieve the assembly of the flexible magnetic strap 10 and the device body 20.

[0054] Among them, the main strap 11 and the auxiliary strap 12 both include a first non-magnetic rubber 10a, a magnetic rubber 10c and a second non-magnetic rubber 10b. The magnetic rubber 10c is stacked between the first non-magnetic rubber 10a and the second non-magnetic rubber 10b. The first non-magnetic rubber 10a and the second non-magnetic rubber 10b are sealed and connected to achieve the encapsulation of the magnetic rubber 10c. With the help of the magnetic attraction provided by the magnetic rubber 10c, the main strap 11 and the auxiliary strap 12 are detachably magnetically connected.

[0055] As you can easily understand, when the smart wearable device 100 is worn on the wrist, the main strap 11 and the secondary strap 12 are magnetically connected to secure the smart wearable device 100 to the wrist. By detaching the main strap 11 and the secondary strap 12, the smart wearable device 100 can be loosened from the wrist for easy removal. The magnetic attachment and detachment method is convenient and labor-saving, enhancing the user experience.

[0056] In summary, the implementation of the technical solution of this embodiment will achieve the following beneficial effects: the flexible magnetic strap 10 of this solution is composed of a main strap 11 and a sub-strap 12, one end of the main strap 11 and one end of the sub-strap 12 are both used to connect to the device body 20, and when in use, they are connected and fixed by the magnetic attraction between the main strap 11 and the sub-strap 12 to achieve wearing on the user; further, the main strap 11 and the sub-strap 12 are both composed of a first non-magnetic rubber 10a, a magnetic rubber 10c and a second non-magnetic rubber 10b, so that the main strap 11 and the auxiliary strap 12 have good flexibility due to the characteristics of the colloid, which is conducive to improving the wearing comfort and experience; in addition, the magnetic rubber 10c in the inner layer provides magnetic attraction, while the first non-magnetic rubber 10a and the second non-magnetic rubber 10b in the outer layer provide physical protection and appearance modification, which effectively prevents the magnetic rubber 10c from being exposed to the environment and being oxidized and corroded and the magnetic powder from falling off. At the same time, it also prevents the magnetic rubber 10c from being accelerated deteriorated by contact with sweat, resulting in a reduction in magnetic attraction and affecting the service life and wearing reliability.

[0057] Optionally, the magnetic rubber 10c may be made of, but not limited to, magnetic silicone rubber.

[0058] It can be understood that the first non-magnetic rubber 10a and the second non-magnetic rubber 10b act as the outer skin of the main strap 11 and the auxiliary strap 12, while the magnetic rubber 10c acts as the core layer of the main strap 11 and the auxiliary strap 12. The first non-magnetic rubber 10a and the second non-magnetic rubber 10b wrap the magnetic rubber 10c to form a structure similar to a "sandwich".

[0059] On the basis of the above embodiment, the first non-magnetic rubber 10a, the magnetic rubber 10c and the second non-magnetic rubber 10b are further formed into an integral structure by adopting a step-by-step hot pressing co-vulcanization process.

[0060] In actual production, the first and second non-magnetic rubbers 10a, 10b are semi-vulcanized. The magnetic rubber 10c is then placed into the mold's pre-positioned grooves. Finally, all three are vulcanized simultaneously. Excess rubber is automatically discharged through the mold's glue discharge channel, achieving precise positioning of the core layer of the magnetic rubber 10c. A single molding and vulcanization operation completes the integral molding of the magnetic rubber 10c, the first and second non-magnetic rubbers 10a, 10b.

[0061] The composite molding of the magnetic rubber 10c, the first non-magnetic rubber 10a and the second non-magnetic rubber 10b does not require secondary gluing or complex structural assembly. Compared with the prior art that requires multiple molding or the use of expensive adhesives, this solution can greatly reduce production costs and achieve efficient production.

[0062] After integral molding, the main strap 11 and the auxiliary strap 12, the first non-magnetic rubber 10a, the magnetic rubber 10c and the second non-magnetic rubber 10b are tightly bonded, and there are no hollows, air bags and other structures, which well ensures the molding quality and feel of the strap.

[0063] Specifically, the present application also provides a method for manufacturing a flexible magnetic watch strap 100, which specifically includes the following steps:

[0064] S10: Select and install insert 40 modules suitable for the cavity size on the first hot pressing mold and the second hot pressing mold.

[0065] S20: placing the magnetic rubber 10c into the cavity of the first hot pressing mold and performing hot pressing and vulcanization molding, then taking out the core layer of the magnetic rubber 10c and cooling it to set the shape.

[0066] S30: placing the non-magnetic rubber compound in a second hot pressing mold cavity, performing hot pressing and semi-vulcanization shaping, and obtaining a semi-vulcanized first non-magnetic rubber 10a and a semi-vulcanized second non-magnetic rubber 10b.

[0067] S40: The middle plate mold of the second hot pressing mold is removed, and the core layer of the magnetic rubber 10c is placed into the groove of the semi-vulcanized first non-magnetic rubber 10a.

[0068] S50: The semi-vulcanized first non-magnetic rubber 10a, the magnetic rubber 10c core layer and the semi-vulcanized second non-magnetic rubber 10b are co-vulcanized and formed under hot pressing conditions in a mold, then taken out and cooled to shape, and magnetized on a flat polycrystalline magnetized plate to obtain a finished flexible magnetic watch strap 10.

[0069] The first hot pressing mold adopts a template 30 structure of "upper plate-lower plate" form, which is used to form the magnetic rubber 10c.

[0070] Preferably, the mold cavity of the first hot pressing mold adopts a modular insert 40 design, and the corresponding cavity insert 40 can be switched and installed according to the magnetic rubber 10c of different required shapes and sizes.

[0071] The second hot pressing mold adopts a template 30 structure of "upper plate-middle plate-lower plate" for co-vulcanization molding of three layers of materials, namely, the first non-magnetic rubber 10a, the magnetic rubber 10c and the second non-magnetic rubber 10b.

[0072] Preferably, the cavity positions of the "upper plate-middle plate-lower plate" plates of the second hot pressing mold are all designed with modular inserts 40, and the corresponding cavity inserts 40 can be switched and installed at will according to the different required shapes and sizes of the first non-magnetic rubber 10a, the second non-magnetic rubber 10b and the magnetic rubber 10c.

[0073] The mold cavity utilizes a modular insert 40 structure design, allowing for customizable shapes and sizes. This increases molding flexibility and reduces the cost of secondary mold processing, resulting in greater resource conservation and energy conservation compared to existing technologies. A co-vulcanization molding process employs a three-layer "upper plate-middle plate-lower plate" material structure to chemically fuse the three layers, forming an integrated flexible magnetic watchband 10. This ensures the watchband's softness, comfort, and durability. Due to the co-vulcanization molding process, the magnetic rubber 10c is tightly encapsulated by the chemical fusion of the first and second non-magnetic rubbers 10a, 10b, providing excellent protection against everyday chemical erosion, such as perspiration.

[0074] like Figure 7 , which is a partial structural diagram of the first hot pressing mold or the second hot pressing mold, wherein the template 30 can refer to any one of the upper plate, the middle plate and the lower plate.

[0075] In one embodiment, the first non-magnetic rubber 10a and the second non-magnetic rubber 10b are made of one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

[0076] Preferably, the first non-magnetic rubber 10a and the second non-magnetic rubber 10b are made of one of hydrogenated nitrile rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two of them.

[0077] The first non-magnetic rubber 10a and the second non-magnetic rubber 10b are made of at least one of the above materials, which can not only make the first non-magnetic rubber 10a and the second non-magnetic rubber 10b have excellent elasticity and flexibility, improve the comfort and experience of use, but also have excellent anti-oxidation and chemical corrosion resistance, etc., improve the durability of the flexible magnetic watch strap 10 and ensure its service life.

[0078] The following provides a damp heat aging test and a salt spray corrosion test to characterize the surface magnetism and flexibility reliability capabilities of the flexible magnetic strap 10.

[0079] First, the test conditions of the wet heat aging test.

[0080] Experimental group: 40°C, 93% RH, constant humidity and heat aging, unpaired, suspended independently; control group: unpaired, suspended independently in a room. Marked (F) indicates the non-magnetic rubber layer is made of fluororubber; the others indicate silicone rubber. The core layer is uniformly made of NdFeB silicone.

[0081]

[0082] After 30 days of heat and humidity aging testing, the flexible magnetic watch strap 10 in the test group performed comparable to the flexible magnetic watch strap 10 in the control group.

[0083] The maximum magnetic change of the flexible magnetic strap 10 does not exceed 50Gs, which means that the magnetic properties and suction force remain stable; the maximum hardness change does not exceed ±1° and the flexible magnetic strap 10 does not crack when wrapped around the 4mm rod, indicating that it still maintains its soft properties after 30 days of damp heat aging.

[0084] Second, salt spray corrosion test.

[0085] Test conditions: 35°C, 5wt% NaCl neutral salt spray.

[0086]

[0087] After 30 days of salt spray testing, the flexible magnetic watchband 10 coated with the first and second non-magnetic rubbers 10a, 10b showed no corrosion, exhibited a maximum hardness change of no more than ±1°, and exhibited no cracking when wound around a 4mm rod, demonstrating that it retained its softness after 30 days of salt spray testing. In contrast, the magnetic core material, uncoated with the first and second non-magnetic rubbers 10a, 10b, exhibited extensive corrosion after only one day of salt spray exposure. After 30 days, the material had become severely corroded, cracked, and hard and brittle.

[0088] In summary, the test results show that the flexible magnetic watch strap 10 with a "sandwich" wrapping structure has excellent salt spray corrosion resistance, providing stable surface magnetic properties and long-lasting softness and comfort for the daily use of the flexible magnetic watch strap 10.

[0089] In addition, in another optional embodiment, the magnetic rubber 10c is made of a mixture of rare earth permanent magnetic powder and rubber adhesive.

[0090] The rare earth permanent magnet powder is one of samarium cobalt series, neodymium iron boron series, cerium iron boron series, lanthanum cerium iron boron series, cerium iron nitrogen series, cerium cobalt series, and samarium iron nitrogen series, or a mixture of at least two or more.

[0091] Preferably, the rare earth permanent magnet powder is of the neodymium iron boron series.

[0092] The rubber adhesive is one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

[0093] Preferably, the rubber adhesive is silicone rubber.

[0094] The silicone rubber material provides the flexibility and elasticity required by the magnetic rubber 10c, and the neodymium iron boron system is used to make the magnetic rubber 10c obtain strong magnetic force, so that the main strap 11 and the auxiliary strap 12 can be effectively magnetically fixed to meet wearing needs.

[0095] Furthermore, based on any of the above embodiments, the magnetic rubber 10c employs a continuous planar structure. For example, the magnetic rubber 10c is a thin rectangular plate, which provides a regular structure and is easy to process. During processing, the magnetic rubber 10c is formed using a double-sided multi-pole magnetization process to form multiple north poles and multiple south poles. The north and south poles are arranged linearly and alternately along the length of the magnetic rubber 10c.

[0096] The length direction of the magnetic rubber 10 c is consistent with the direction of relative expansion and contraction between the main strap 11 and the auxiliary strap 12 when they are magnetically connected.

[0097] This ensures that both the main strap 11 and the secondary strap 12 have multiple S and N poles arranged alternately and continuously along their lengths, with these poles distributed throughout the lengths of the main strap 11 and the secondary strap 12. When the smart wearable device 100 is worn, the main strap 11 and the secondary strap 12 are magnetically connected in a stacked manner. For example, using the wrist as a reference point, the secondary strap 12 can be positioned between the wrist and the main strap 11, or between the secondary strap 12 and the wrist. This can be flexibly selected based on actual needs. Specifically, the main strap 11 and the secondary strap 12 are magnetically secured together by the corresponding magnetic connection between the N pole (or S pole) on the main strap 11 and the S pole (or N pole) on the secondary strap 12.

[0098] Furthermore, according to the different thicknesses of different users' wrists, the main strap 11 and the auxiliary strap 12 are slid toward or oppositely, and the S poles or N poles at different positions on the main strap 11 cooperate with the N poles or S poles at different positions on the auxiliary strap 12 to achieve stepless tightness adjustment of the flexible magnetic strap 10, thereby improving the versatility and flexibility of use of the flexible magnetic strap 10 and providing users with a more convenient and comfortable wearing experience.

[0099] In addition, the flexible magnetic strap 10 adopts a planar design as a whole, and the overall soft rubber and silicone material allows the main strap 11 and the auxiliary strap 12 to be adsorbed to form a "full fit" state, and each point on the magnetic circuit of the strap forms a "microscopic equidistant" paired adsorption, which greatly improves the utilization rate of the magnetic force and provides reliable adsorption force, ensuring the firmness and safety of the watch during wearing.

[0100] It should be noted that in order to improve the wearing comfort, the surface of the main strap 11 used to contact the user's skin and / or the side of the secondary strap 12 used to contact the user's skin are provided with spherical protrusions arranged in an array structure. After wearing, the spherical protrusions can form a certain massage and anti-slip effect.

[0101] Furthermore, in order to obtain a better user experience, the flexible magnetic strap 10 is made to have a higher sense of technology. A luminous light strip is embedded in at least one side in the width direction of the main strap 11 and / or at least one side in the width direction of the auxiliary strap 12. The luminous light strip is electrically connected to the power signal terminals at the ends of the main strap 11 and the auxiliary strap 12. When the main strap 11 and the auxiliary strap 12 are installed with the device body 20, the power signal terminals automatically contact and electrically connect with the power supply terminals on the device body 20, thereby enabling the controller inside the device body 20 to transmit electrical energy and working instructions to the luminous light strip, so that the luminous light strip can light up with the set luminous effect, such as flashing light, flowing light, breathing light, etc., and can be flexibly selected according to actual needs.

[0102] Please continue reading Figure 2 and Figure 4 In order to facilitate the connection between the main strap 11 and the auxiliary strap 12 and the device body 20, in one embodiment, a first connector 111 is provided at one end of the main strap 11, and a second connector 121 is provided at one end of the auxiliary strap 12. The first connector 111 and the second connector 121 are both used for installation with the device body 20.

[0103] For example, the first connector 111 and the second connector 121 can be installed with the device body 20 by any of the following methods: screw connection, snap connection, bonding, magnetic connection, hinge connection, etc. The specific method can be flexibly selected according to actual needs.

[0104] More specifically, in one embodiment, the first connector 111 defines a first mounting hole 1111, into which a first rotating shaft is mounted; the second connector 121 defines a second mounting hole 1211, into which a second rotating shaft is mounted. Thus, during installation, the first rotating shaft can be assembled with the holes on the device body 20, thereby achieving a rotational connection between the first connector 111 and the second connector 121 and the device body 20. This allows the primary strap 11 and the secondary strap 12 to have rotational freedom relative to the device body 20, facilitating their rotation and curling for wrist wear, or allowing the primary strap 11, the device body 20, and the secondary strap 12 to remain flat for easy placement and storage.

[0105] Please continue reading Figure 4 Furthermore, in yet another embodiment, a retaining hole 122 is defined at one end of the secondary strap 12, distal from the second connector 121. This retaining hole 122 is configured for insertion and assembly with the primary strap 11. When worn, the free end of the primary strap 11, distal from the device body 20, is inserted into the retaining hole 122 and, through frictional force with the wall of the retaining hole 122, is wedged in place, further securing the primary strap 11 and the secondary strap 12, improving wearability.

[0106] However, it should be noted that the limiting hole 122 may not be provided on the auxiliary strap 12, and in this case the auxiliary strap 12 is also a conventional setting.

[0107] Furthermore, based on the above embodiment, the wall of the limiting hole 122 is provided with a magnetic colloid 123. The magnetic colloid 123 is in close contact with the non-magnetic rubber outer layer of the main strap 11, and has a high damping coefficient, which can better limit the relative freedom of movement between the main strap 11 and the auxiliary strap 12, ensuring a secure fit.

[0108] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A flexible magnetic watch strap, characterized in that: include: a main strap, one end of which is used to connect to the device body; as well as A secondary strap, one end of which is used to connect to the device body; wherein, the main strap and the secondary strap both include a first non-magnetic rubber, a magnetic rubber, and a second non-magnetic rubber, the magnetic rubber is stacked between the first non-magnetic rubber and the second non-magnetic rubber, the first non-magnetic rubber and the second non-magnetic rubber are sealed to achieve the encapsulation of the magnetic rubber, and the main strap and the secondary strap are detachably magnetically connected by means of the magnetic attraction provided by the magnetic rubber.

2. The flexible magnetic watch strap according to claim 1, characterized in that: The first non-magnetic rubber, the magnetic rubber and the second non-magnetic rubber are formed into an integral structure by adopting a step-by-step hot pressing co-vulcanization process.

3. The flexible magnetic watch strap according to claim 1, characterized in that: The first non-magnetic rubber and the second non-magnetic rubber are made of one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

4. The flexible magnetic watch strap according to claim 1, characterized in that: The magnetic rubber is made by mixing rare earth permanent magnetic powder and rubber binder; The rare earth permanent magnet powder is one of samarium cobalt series, neodymium iron boron series, cerium iron boron series, lanthanum cerium iron boron series, cerium iron nitrogen series, cerium cobalt series, and samarium iron nitrogen series, or a mixture of at least two or more thereof; The rubber adhesive is one of butadiene rubber, chloroprene rubber, nitrile rubber, hydrogenated nitrile rubber, EPDM rubber, natural rubber, epoxidized natural rubber, silicone rubber, fluorosilicone rubber and fluororubber, or a mixture of at least two or more thereof.

5. The flexible magnetic watch strap according to claim 1, characterized in that: The magnetic rubber adopts a continuous plane structure, and the magnetic rubber is formed with multiple N poles and multiple S poles using a double-sided multi-pole magnetization process, and the N poles and the S poles are alternately linearly arranged along the length direction of the magnetic rubber; The length direction of the magnetic rubber is consistent with the direction of relative expansion and contraction sliding of the main strap and the auxiliary strap when they are magnetically connected.

6. The flexible magnetic watch strap according to claim 1, characterized in that: One end of the main strap is provided with a first connector, and one end of the auxiliary strap is provided with a second connector, and both the first connector and the second connector are used for mounting on the device body; The first connecting body is provided with a first mounting through hole, in which the first rotating shaft is installed; the second connecting body is provided with a second mounting through hole, in which the second rotating shaft is installed.

7. The flexible magnetic watch strap according to claim 6, characterized in that: A limiting hole is defined at one end of the secondary strap away from the second connector, and the limiting hole is used for threading and assembling with the primary strap; The hole wall of the limiting hole is provided with magnetic colloid.

8. The flexible magnetic watch strap according to claim 6, characterized in that: A light strip is embedded in at least one side of the main strap and / or at least one side of the auxiliary strap, the light strip is electrically connected to power signal terminals at the ends of the main strap and the auxiliary strap, and when the main strap and the auxiliary strap are installed on the device body, the power signal terminals are automatically electrically connected to the power supply terminals on the device body; and / or, The surface of the main strap that contacts the user's skin and / or the side of the auxiliary strap that contacts the user's skin are provided with spherical protrusions arranged in an array structure.

9. A method for preparing the flexible magnetic watch strap according to any one of claims 1 to 8, characterized in that: The steps include: Selecting and installing insert modules suitable for the cavity size on the first hot pressing mold and the second hot pressing mold; Placing the magnetic rubber compound in the cavity of the first hot pressing mold, hot pressing and vulcanizing the compound to form a magnetic rubber core layer, then removing the magnetic rubber core layer and cooling the core layer to set the magnetic rubber core layer; placing the non-magnetic rubber compound in a second hot pressing mold cavity, and performing hot pressing and semi-vulcanization shaping to obtain a semi-vulcanized first non-magnetic rubber and a semi-vulcanized second non-magnetic rubber; The middle plate mold of the second hot pressing mold is removed, and the magnetic rubber core layer is placed into the groove of the semi-vulcanized first non-magnetic rubber; The semi-vulcanized first non-magnetic rubber, the magnetic rubber core layer and the semi-vulcanized second non-magnetic rubber are co-vulcanized and formed under hot pressing conditions in a mold, then taken out and cooled to shape, and magnetized on a flat polycrystalline magnetized plate to obtain a finished flexible magnetic watch strap.

10. A smart wearable device, characterized in that: include: Equipment body; as well as The flexible magnetic strap according to any one of claims 1 to 8, characterized in that the flexible magnetic strap is connected to the device body.

Images