Watchband chain link assembly, watchband and wearable device

Abstract

The utility model provides a watchband chain link assembly, a watchband and wearable equipment. Relates to the technical field of wearing equipment. The watchband chain link assembly comprises a plurality of chain links arranged in the length direction of a watchband, and / or a plurality of chain links arranged in the width direction of the watchband, and further comprises connecting rings, every two adjacent chain links are connected through the corresponding connecting ring, and the chain links can rotate through the connecting rings. Due to the fact that every two adjacent chain links are connected through the corresponding connecting ring, and the chain links can rotate through the connecting rings, the performance of the watchband can be improved, for example, the chain link pieces cannot be jammed, the degree of freedom is high, and the watchband has better flexibility; in addition, the watchband is more skin-friendly and more comfortable to wear, and the appearance attractiveness of the watchband can be optimized.

Description

Technical Field

[0001] This application relates to the field of wearable device technology, and in particular to a watch strap link assembly, a watch strap, a wearable device, a method for preparing the strap link assembly, and a method for preparing the watch strap. Background Technology

[0002] Wearable devices generally refer to miniature electronic devices that can be worn on the body for activities, and basically include smartwatches and smart bracelets. Smartwatches and smart bracelets can be used independently or as portable accessories for mobile devices.

[0003] Wearable devices mainly consist of the watch body and the watch strap. Among the watch straps with relevant technologies, the performance is poor and the user experience is poor. Utility Model Content

[0004] This application provides a watchband link assembly, a watchband, a wearable device, a method for manufacturing the band link assembly, and a method for manufacturing the watchband. The aim is to improve watchband performance and enhance user experience.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In one aspect, this application provides a watch strap link assembly that can be used in the watch strap of a wearable device, such as a watch or a bracelet.

[0007] The watch strap link assembly provided in this application includes: a plurality of links arranged along the length direction of the watch strap, and / or a plurality of links arranged along the width direction of the watch strap; and the watch strap link assembly further includes a connecting ring, wherein two adjacent links are connected by the connecting ring, and the links are rotatable by the connecting ring.

[0008] In the watch strap link assembly provided in this application, since two adjacent links are connected by a connecting ring and the links can rotate through the connecting ring, the performance of the watch strap can be improved. For example, it can prevent the links from getting stuck, has a high degree of freedom, and makes the watch strap more flexible. In addition, it can make the watch strap more skin-friendly, improve the wearing comfort, and optimize the aesthetic appearance of the watch strap.

[0009] In some optional processes, the connecting ring is located within the first surface and extends within the first surface, with the thickness direction of the strap perpendicular to the first surface.

[0010] In the watch strap link assembly provided in this application, since the connecting ring is located within the first surface, the thickness direction of the watch strap is perpendicular to the first surface, and the connecting ring extends within the first surface rather than being arranged vertically along the thickness direction of the watch strap, the connecting ring structure provided in this application can fully utilize the space within the first surface (the surface perpendicular to the thickness of the watch strap) and compress the space occupied in the thickness direction. With the same watch strap thickness, this application can increase the cross-sectional area of ​​the connecting ring to improve its connection strength, or, with the same cross-sectional area of ​​the connecting ring, can compress the thickness of the watch strap.

[0011] Among the available processes, the Binder Jetting (BJ) process can be used to fabricate the watchband link assembly. BJ primarily utilizes the bonding of powder and liquid binder to create solid components. For example, a single layer of powder can be deposited on a build platform. The 3D printing head sweeps across the powder, selectively jetting binder droplets. These binder droplets can be viewed as glue for the powder particles; as they selectively fall and contact the powder, the particles fuse together to form a solid. After each layer of 3D printing is complete, the 3D printing platform descends one layer, and this process is repeated until the target model is finished. Because the solidified layer in this BJ process can serve as a support for the next layer, the resulting connecting ring lies within a plane perpendicular to the thickness direction of the watchband.

[0012] In one possible implementation, the watch strap link assembly is a single structural component.

[0013] A watchband link assembly can be understood as a single, integral structure consisting of multiple links arranged along the length of the watchband, multiple links arranged along the width of the watchband, and the connecting rings. For example, a single-piece watchband link assembly can be manufactured using 3D printing with Binder Jetting (BJ) adhesive jetting technology. In other structures, other 3D printing processes can also be used to create a single-piece watchband link assembly.

[0014] Integrated molding ensures uniform growth of the entire chain link, resulting in better strength and corrosion resistance. In addition, integrated molding of the watch strap chain link assembly can improve efficiency and reduce costs while increasing yield.

[0015] In one possible implementation, the cross-section of the connecting ring has a dimension in a first direction that is larger than its dimension in a second direction; the cross-section of the connecting ring is perpendicular to the extension direction of the connecting ring, the first direction is parallel to the thickness direction of the watch strap, and the second direction is perpendicular to the first direction.

[0016] The connecting ring has a larger dimension in the thickness direction, which can further increase the mechanical strength of the connecting ring.

[0017] The watch strap link assembly is made using the BJ (Binder jetting) adhesive jetting process in 3D printing. Since the solid upper layer can serve as a support for the lower layer, no support component is needed, which allows the connecting ring to have a larger dimension in the thickness direction, thereby increasing the mechanical strength of the connecting ring.

[0018] In one possible implementation, a first end and a second end of the connecting ring are respectively connected to the side wall of the link, the connection position of the first end and the connection position of the second end and the link are located in the first surface, and the connecting portion connecting the first end and the second end extends in the first surface.

[0019] In one possible implementation, the connecting part is an arc-shaped structure that protrudes outward from the link.

[0020] In one possible implementation, the cross-sectional area of ​​the connecting portion is smaller than the cross-sectional area of ​​the first end portion.

[0021] In other words, the end of the connecting ring has a larger cross-section, which increases the connection strength between the connecting ring and the link. For example, it can increase the number of rotations of the connecting ring, thus improving the performance of the watch strap link assembly.

[0022] In one feasible approach, a connecting ring is provided on one of two adjacent links, and the edge of the other link has a connecting rod, with the connecting ring nested within the connecting rod.

[0023] In this structure, the two chain links are rotated by fitting a connecting ring and a connecting rod together.

[0024] In one feasible manner, a link includes multiple connecting rods and multiple connecting rings, which are arranged alternately along the circumference of the link.

[0025] In one possible implementation, a link includes multiple connecting rings arranged circumferentially along the link; another link includes multiple connecting rings and multiple connecting rods arranged circumferentially along the link.

[0026] In one feasible approach, the link has a cavity.

[0027] The link is hollow, which reduces the weight of the entire strap and improves the user experience. For example, compared to a solid link structure, it can reduce weight by at least 10%, and in some examples, by 30%.

[0028] Among feasible processes, hollow chain link structures can be fabricated using 3D printing with BJ (Binder jetting) adhesive jetting technology.

[0029] In one possible implementation, the link includes an upper cover portion and a lower cover portion, which are opposite to each other; the space enclosed by the upper cover portion and the lower cover portion is a closed space; or, the space enclosed by the upper cover portion and the lower cover portion is connected to the outside.

[0030] Among the available processes, 3D printing using the BJ (Binder jetting) process can be employed to create links that connect the space to the outside world.

[0031] Chain-like structures with enclosed spaces can be fabricated using selective laser melting (SLM) 3D technology. Alternatively, chain-like structures with enclosed spaces can be fabricated using 3D printing with binder jetting (BJ).

[0032] In one feasible approach, the space enclosed by the upper and lower cover portions is filled with material.

[0033] Filling the space between the upper and lower cover sections with filler can reduce the accumulation of sweat and other liquids in the cavity, thus reducing the risk of the watch strap being corroded or experiencing allergic reactions due to liquid buildup.

[0034] In one feasible manner, the melting point of the filler is greater than that of the link, and the melting point of the filler is greater than that of the connecting ring.

[0035] For example, when the link is made using the BJ (Binder jetting) adhesive spraying process, the upper and lower parts of the link can be made separately first, then filler is added between the upper and lower parts, and then the links are sewn together with adhesive. In this case, the melting point of the filler needs to be greater than the melting point of the link, that is, the filler needs to have high temperature resistance. This ensures that the filler will not melt when the adhesive is sewn together.

[0036] In one feasible approach, the filler can be selected from at least one of materials such as ceramics and silicon dioxide.

[0037] In one feasible approach, the filler comprises a magnetic material.

[0038] For example, when the filling includes magnetic material, the watch band can be attracted to another watch band.

[0039] In one possible implementation, the plurality of links arranged along the width direction of the watch strap include: a plurality of first links and a plurality of second links, wherein one second link is connected to two first links, and one first link is connected to two second links; the first links and the second links are staggered in the length direction of the watch strap; the first links and the two second links connected to the first links form a first receiving cavity for receiving a first link located on one side; the second links and the two first links connected to the second links form a second receiving cavity for receiving a second link located on the other side.

[0040] This improves the overall flexibility of the watch band, enhancing its wearing comfort and user experience. Furthermore, the staggered arrangement of multiple links also improves the band's aesthetic appeal.

[0041] In one feasible manner, the first link has a symmetrical structure within the first face.

[0042] The first or second link uses a symmetrical structure, which can improve the overall stability of the watch strap when it bends.

[0043] In one possible implementation, the link includes an extension and a recess, with a connecting ring disposed in the recess.

[0044] For example, it includes multiple extensions and multiple recesses, which are arranged alternately along the circumference of the links, so that the watch strap link assembly formed can have a honeycomb structure.

[0045] In one possible implementation, the link includes at least one of a hexagonal structure, a parallelogram structure, a rectangular structure, or a rhombus structure.

[0046] Secondly, this application also provides a watch strap. This watch strap can be used in wearable devices, such as watches or wristbands.

[0047] The watch strap includes a strap connector and a watch strap link assembly as described in any of the above implementations; the strap connector is attached to the end of the watch strap link assembly.

[0048] The watch strap provided in this application includes a watch strap link assembly as described in any of the above implementations. In this watch strap link assembly, adjacent links are connected by a connecting ring, and the links can rotate through the connecting ring. This improves the performance of the watch strap. For example, it prevents the links from getting stuck, increases the degree of freedom, and makes the watch strap more flexible. In addition, it makes the watch strap more skin-friendly, improves wearing comfort, and optimizes the aesthetic appearance of the watch strap.

[0049] In one possible implementation, the connecting ring in the watchband link assembly is located within the first surface, with the thickness direction of the watchband perpendicular to the first surface. The connecting ring extends within the first surface, rather than being vertically arranged along the thickness direction of the watchband. This allows the connecting ring structure provided in this application to fully utilize the space within the first surface (the surface perpendicular to the watchband thickness) and compress the space occupied in the thickness direction. With the same watchband thickness, this application can increase the cross-sectional area of ​​the connecting ring to improve its connection strength; alternatively, with the same cross-sectional area of ​​the connecting ring, the thickness of the watchband can be compressed.

[0050] Thirdly, this application provides a wearable device, which includes a watch body and a watch strap as described in any of the above implementations, the watch strap being connected to the watch body.

[0051] In some examples, a watch strap may be included, at least a portion of which includes the watch strap link component of any of the above implementations.

[0052] In other examples, multiple watch straps may be included, at least one of which includes the strap link component in any of the above implementations.

[0053] Fourthly, this application provides a method for preparing a belt link assembly, the method comprising:

[0054] Apply the first layer of powder;

[0055] Adhesive is sprayed onto the position to be formed of the first layer of powder, and the powder at the position to be formed of the first layer of powder solidifies to obtain a first part. The first part includes at least a portion of a plurality of links, the plurality of links including a plurality of links arranged along the length direction of the belt and a plurality of links arranged along the width direction of the belt.

[0056] Apply the (N-1)th layer of powder, where N ≥ 3;

[0057] Adhesive is sprayed onto the position to be formed of the N-1th layer of powder, and the powder at the position to be formed of the N-1th layer of powder solidifies to obtain the N-1th part. The N-1th part includes at least a portion of a plurality of chain segments and at least a portion of a connecting ring.

[0058] Apply the Nth layer of powder;

[0059] Adhesive is sprayed onto the position to be formed of the Nth layer of powder, and the powder at the position to be formed of the Nth layer of powder solidifies to obtain the Nth part, thereby obtaining multiple links and connecting rings.

[0060] In one feasible approach, the belt link assembly is fabricated using a 3D adhesive spraying process, with the connecting ring located within a first surface and extending within that first surface, which is perpendicular to the powder stacking direction.

[0061] In the belt link assembly manufactured using the above process, since the connecting ring is located within the first surface (which can be understood as perpendicular to the belt thickness), the connecting ring structure of this application can fully utilize the space within the first surface of the belt, compressing the space occupied in the thickness direction. With the same belt thickness, this application can increase the cross-sectional area of ​​the connecting ring, thereby improving its connection strength; or, with the same cross-sectional area of ​​the connecting ring, it can compress the thickness of the belt.

[0062] The above methods can be used to make watch straps, or other accessories, such as necklaces and bracelets.

[0063] In one feasible manner, an adhesive is sprayed onto the position to be formed of the (N-1)th layer of powder, and the powder at the position to be formed of the (N-1)th layer of powder solidifies to obtain the (N-1)th part of multiple links, so as to obtain the first half of the belt link assembly, wherein the links of the first half of the belt have empty slots.

[0064] The preparation method also includes:

[0065] The second half of the watch strap link assembly is made, and the links of the second half of the watch strap have empty slots.

[0066] An adhesive connects the first half-band and the second half-band, forming a cavity inside the chain link. The cavity is formed by the groove in the first half-band and the groove in the second half-band.

[0067] The resulting link structure is hollow, which reduces the weight of the link and improves wearing comfort.

[0068] In one feasible manner, the preparation method further includes, before the adhesive joins the first and second half-bands:

[0069] Filler material is placed in the empty slot within the first half-band.

[0070] The filler can reduce the accumulation of sweat and other liquids in the cavity, reduce the corrosion of the watch strap, and prevent users from experiencing allergies due to liquid buildup.

[0071] Fifthly, this application provides a method for preparing a watch strap, the method comprising:

[0072] The watch strap link assembly is prepared by any of the above-mentioned methods.

[0073] Connect the strap connector to the end of the strap link assembly.

[0074] The process described in the fourth aspect of this application allows for the fabrication of watch straps with small connecting structure dimensions. Compared to traditional processes, which limit the design possibilities for watch straps, the process described in the fourth aspect of this application provides a manufacturing basis for a wider range of watch strap designs. Attached Figure Description

[0075] Figure 1 This is a schematic diagram of the structure of a watch strap for a wearable device provided in an embodiment of this application;

[0076] Figure 2 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0077] Figure 3 for Figure 2 Partial structural diagram;

[0078] Figure 4 A schematic diagram illustrating the rotational position of a link is provided in an embodiment of this application;

[0079] Figure 5 A schematic diagram illustrating the rotational position of a link is provided in an embodiment of this application;

[0080] Figure 6 A schematic diagram of the structure of a link provided in an embodiment of this application;

[0081] Figure 7 This is a schematic diagram illustrating the connection relationship between two links provided in an embodiment of this application;

[0082] Figure 8 A front view of a link provided in an embodiment of this application;

[0083] Figure 9 For along Figure 6 The cross-sectional view shown is cut from the M-plane.

[0084] Figure 10 A schematic diagram of the structure of a link provided in an embodiment of this application;

[0085] Figure 11 A schematic diagram showing the arrangement of multiple links provided in an embodiment of this application;

[0086] Figure 12 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0087] Figure 13 A schematic diagram of the structure of a link provided in an embodiment of this application;

[0088] Figure 14 This is a schematic diagram illustrating the connection relationship between two links provided in an embodiment of this application;

[0089] Figure 15 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0090] Figure 16 for Figure 15 A cross-sectional view of AA;

[0091] Figure 17 This is a schematic diagram illustrating the connection relationship between two links provided in an embodiment of this application;

[0092] Figure 18 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0093] Figure 19 A schematic diagram of the structure of a link provided in an embodiment of this application;

[0094] Figure 20 This is a schematic diagram illustrating the connection relationship between two links provided in an embodiment of this application;

[0095] Figure 21 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0096] Figure 22 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0097] Figure 23 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0098] Figure 24 A flowchart of a BJ (Binder jetting) adhesive spraying process is provided for embodiments of this application;

[0099] Figure 25 A flowchart illustrating a method for manufacturing a watch strap link assembly, as provided in this application embodiment;

[0100] Figure 26 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0101] Figure 27 for Figure 26 A cross-sectional view of BB;

[0102] Figure 28 A partial structural diagram of a link provided in an embodiment of this application;

[0103] Figure 29 A schematic diagram of the structure of a watch strap link assembly provided in an embodiment of this application;

[0104] Figure 30 for Figure 29 A cross-sectional view of CC;

[0105] Figure 31 for Figure 29 Another cross-sectional view of CC;

[0106] Figure 32 A flowchart illustrating a method for manufacturing a watch strap link assembly, as provided in this application embodiment;

[0107] Figure 33 A flowchart illustrating a method for manufacturing a watch strap link assembly, as provided in this application embodiment;

[0108] Figure 34 for Figure 26 Another cross-sectional view of BB;

[0109] Figure 35 A partial structural diagram of a link provided in an embodiment of this application;

[0110] Figure 36 A flowchart illustrating a method for manufacturing a watch strap link assembly, as provided in this application embodiment;

[0111] Figure 37A and Figure 37B A process structure diagram of a method for manufacturing a watch strap link assembly provided in this application embodiment;

[0112] Figure 38 A flowchart illustrating a method for manufacturing a watch strap link assembly, as provided in this application embodiment;

[0113] Figure 39A , Figure 39B and Figure 39C A process structure diagram of a method for manufacturing a watch strap link assembly provided in this application embodiment;

[0114] Figure 40 This is an exploded view of a watch strap link assembly provided in an embodiment of this application.

[0115] Figure label:

[0116] 100 - First watch strap; 101 - First watch strap link assembly; 102 - First watch strap connector; 103 - First tail link;

[0117] 200 - Second strap; 201 - Second strap link assembly; 202 - Second strap connector; 203 - Second tail link;

[0118] 300-Connector;

[0119] 1-Link; 2-Connecting structure; 21-Connecting ring; 3-Connecting rod; 4-Supporting rod; 5-Cavity; 6-Filling material;

[0120] 1A - Upper cover portion; 1B - Lower cover portion; 1C - Connecting portion; 21A - First end; 21B - Second end; 21C - Connecting part. Detailed Implementation

[0121] This application provides a wearable device, such as a smart bracelet or a smartwatch. The wearable device can be worn on the wrist and performs functions such as time display, time recording, time announcement, message notification, activity detection, heart rate monitoring, and blood oxygen level detection.

[0122] Wearable devices may include a strap and a body. The strap is used to wrap around the user's wrist to enable the wearable device to be worn, and the body can be used for display.

[0123] like Figure 1 , Figure 1 An exemplary structural diagram of a watch strap for a wearable device is shown. The example watch strap includes a first watch strap 100 and a second watch strap 200. The first watch strap 100 may include a first watch strap link assembly 101 and a first watch strap connector 102 connected to one end of the first watch strap link assembly 101; alternatively, the first watch strap 100 may also include a first tail link 103 connected to the other end of the first watch strap link assembly 101. The second watch strap 200 may include a second watch strap link assembly 201 and a second watch strap connector 202 connected to one end of the second watch strap link assembly 201; alternatively, the second watch strap 200 may also include a second tail link 203 connected to the other end of the second watch strap link assembly 201. The first watch strap connector 102 can be connected to the watch body, and the second watch strap connector 202 can be connected to the watch body. For example, the first watch strap connector 102 can be rotatably connected to the watch body, and the second watch strap connector 202 can be rotatably connected to the watch body.

[0124] The first watch strap 100 can be connected to the second watch strap 200 via the connector 300. For example, in Figure 1 In the example, the first strap link assembly 101 can be connected to the second tail link 203 via the connector 300.

[0125] The connector 300 may include a butterfly clasp. The two ends of the butterfly clasp can be connected to the first strap link assembly 101 and the second strap link assembly 201, respectively. When the butterfly clasp is folded and fastened, the first strap link assembly 101 and the second strap link assembly 201 are relatively close together, so as to fit snugly against the user's wrist or other wearing area, securing the watch around the wrist; when the butterfly clasp is unfolded, the first strap link assembly 101 and the second strap link assembly 201 are relatively far apart, making it easier to remove the watch from the wrist.

[0126] The connector 300 may include a magnetic clasp. For example, the magnetic clasp may include two magnetic tabs respectively disposed on the first strap link assembly 101 and the second strap link assembly 201, the two magnetic tabs attracting each other to connect the first strap link assembly 101 and the second strap link assembly 201. It is understood that by adjusting the position of the magnetic tabs, the tightness of the strap can also be adjusted.

[0127] The connector 300 may include Velcro. Exemplarily, the Velcro may be respectively disposed on the first strap link assembly 101 and the second strap link assembly 201, with the two Velcro straps adhering to each other to connect the first strap link assembly 101 and the second strap link assembly 201. It is understood that the tightness of the strap can be adjusted by adjusting the position of the Velcro straps.

[0128] exist Figure 1 The example shows multiple watch straps, such as a first watch strap 100 and a second watch strap 200. In other examples, a single watch strap may be included, with each end of the strap connected to the watch body.

[0129] like Figure 1 The first strap link assembly 101 or the second strap link assembly 201 shown can be adopted Figure 2 The structure shown. Figure 2 Taking the first strap link assembly 101 as an example.

[0130] The watchband link assembly provided in this application embodiment may include components along the length direction of the watchband (e.g., ... Figure 2 Multiple links 1 arranged in the X direction, and / or including those along the width direction of the strap (e.g., ... Figure 2 Multiple links 1 arranged in the Y direction. For example, a watch strap link assembly includes multiple links 1 arranged along the length of the watch strap, and also includes multiple links 1 arranged along the width of the watch strap; for another example, a watch strap link assembly includes multiple links 1 arranged along the length of the watch strap; and for yet another example, a watch strap link assembly includes multiple links 1 arranged along the width of the watch strap.

[0131] In the example of this application, the direction of the watch strap length (e.g.) Figure 2 The X direction can be the same as the width direction of the watch band (e.g., the X direction). Figure 2 The Y-direction is perpendicular to the direction of the watch strap length (e.g., the direction of the Y-direction), and the direction of the watch strap length (e.g., the direction of the Y-direction is perpendicular to the direction of the Y-direction). Figure 2 (in the X direction) and the thickness direction of the watch band (e.g.) Figure 2 The Z-direction is perpendicular to the width direction of the watch band (e.g., the Z-direction), and the width direction of the watch band is perpendicular to the Z-direction. Figure 2 (in the Y direction) and the thickness direction of the watch band (e.g.) Figure 2 (The Z direction) is perpendicular to each other.

[0132] like Figure 3 As shown, Figure 3 This is a diagram showing the connection structure of multiple links in the example of this application.

[0133] In this example, two adjacent links 1 can be connected by the connecting structure 2. For example, two adjacent links 1 can be rotatably connected by the connecting structure 2. That is, link 1 can be rotated through the connecting structure 2.

[0134] In some examples, adjacent links 1 are rotatably connected by connecting structure 2. This can be understood as: in the watch strap, some adjacent links 1 can be rotatably connected by connecting structure 2, or all links 1 can be rotatably connected by connecting structure 2. For example, see... Figure 3 Along the width direction of the watch strap (e.g., the Y direction), two adjacent links 1 are rotatably connected by a connecting structure 2, and, as... Figure 2 Along the length of the watch strap (e.g., the X direction), two adjacent links 1 are rotatably connected by a connecting structure 2.

[0135] In some examples, the more degrees of freedom a link 1 has, the more flexible its rotation becomes, making the entire strap more flexible and skin-friendly, preventing the links from getting stuck, and resulting in greater comfort when worn.

[0136] In the watch strap example of this application, link 1 is rotatable via connecting structure 2, and the rotation axis of link 1 includes at least two axes. For example... Figure 4 The rotation axis of link 1 may include a first axis Q1 and a second axis Q2, and the first axis Q1 and the second axis Q2 intersect.

[0137] For example, in some structures, both the first axis Q1 and the second axis Q2 are parallel to a reference plane, which can be the plane containing the length and width directions of the watch strap. This can be understood as: Figure 4 In the example, the first axis Q1 and the second axis Q2 are located on the reference plane XY plane. The first axis Q1 and the second axis Q2 are not parallel, but intersect.

[0138] See Figure 4 Link 1 can rotate not only around the first axis Q1, but also around the second axis Q2. This gives link 1 more degrees of freedom and makes it more flexible, resulting in better user comfort and a better experience.

[0139] In some other examples, the rotation axis of link 1 can also have more, such as Figure 5 As shown, the rotation axis may include a first axis Q1, a second axis Q2, a third axis Q3, and a fourth axis Q4, and any two of the first axis Q1, the second axis Q2, the third axis Q3, and the fourth axis Q4 intersect.

[0140] For example, the first axis Q1 and the second axis Q2 are located in the XY plane, and the included angle between the first axis Q1 and the second axis Q2 can be less than or equal to 60°. The third axis Q3 and the fourth axis Q4 are located in the YZ plane, and the included angle between the third axis Q3 and the fourth axis Q4 can be less than or equal to 50°.

[0141] The above Figure 4 and Figure 5 The example shows the position of a portion of the axis; in other examples, the axis may be in other positions. This application includes... Figure 4 and Figure 5 The axes of the examples, but not limited to the axes of these examples.

[0142] Figure 6 This is a structural diagram of a chain segment provided in an embodiment of this application. Figure 7 This is a connection diagram of two links provided in an embodiment of this application, and Figure 7 It is a cross-sectional view cut along the XY plane.

[0143] like Figure 6 and Figure 7 In this example, the connection structure includes a connecting ring 21, which can be connected to the side wall of the link 1.

[0144] In some examples, two adjacent links 1 can be rotatably connected by a connecting ring 21, so that each link has multiple rotational degrees of freedom.

[0145] When two adjacent links 1 are rotatably connected, the structure that is nested with the connecting ring 21 can be implemented in a variety of ways.

[0146] For example, the connecting ring 21 (which may be referred to as the first connecting ring) can be fitted with a connecting ring (which may be referred to as the second connecting ring). The second connecting ring can be disposed on the side wall of another link 1. For example, the structure of the second connecting ring can be the same as that of the first connecting ring. Alternatively, the structure of the second connecting ring can also be different from that of the first connecting ring.

[0147] For example, such as Figure 6 and Figure 7 As shown, link 1 has a connecting rod 3 on its edge. See Figure 7 The connecting ring 21 can be fitted onto the connecting rod 3 to achieve a rotatable connection between the two chain links 1.

[0148] This can be understood as: along the thickness direction of the watch strap, such as... Figure 6Link 1 includes an upper cover portion 1A and a lower cover portion 1B, which are opposite to each other, i.e., the upper cover portion 1A and the lower cover portion 1B are arranged vertically along the thickness direction of the watch strap. The connecting rod 3 is located at the edge of the upper cover portion 1A and the lower cover portion 1B, and the connecting rod 3 connects the upper cover portion 1A and the lower cover 1B.

[0149] In some instances, the upper cover portion 1A, the lower cover portion 1B, the connecting rod 3, and the connecting ring 21 may be an integral structural component; or, in other instances, at least two of the upper cover portion 1A, the lower cover portion 1B, the connecting rod 3, and the connecting ring 21 may be independent structural components, which may be connected by a connecting structure.

[0150] See Figure 7 The connecting ring 21 includes a first end 21A and a second end 21B that are connected to the side wall of the chain link, and a connecting part 21C that connects the first end 21A and the second end 21B. When two adjacent chain links are connected, the connecting part 21C can be fitted onto the connecting rod 3.

[0151] In some examples, the connecting part 21C is an arc-shaped structure that protrudes outward from the link, so that the connecting part 21C can be fitted onto the connecting rod 3.

[0152] like Figure 7 The cross-sectional area of ​​the connecting part 21C is smaller than that of the first end. This enhances the connection strength between the connecting ring and the chain link.

[0153] Figure 7 In the example, when two adjacent links are connected, a portion of the connecting ring 21 (such as at least a portion of the connecting part 21C) is hidden within another link. This reduces the gap between the two adjacent links, making the connection between the two adjacent links more compact and improving the aesthetics of the watch strap link assembly.

[0154] like Figure 8 As shown, Figure 8 This is a side view of link 1.

[0155] The connecting ring 21 provided in this embodiment is located within a first surface, and the connecting ring 21 extends within the first surface. The first surface is parallel to the surface where the length direction and width direction of the watch strap are located, or, the first surface is perpendicular (or nearly perpendicular) to the thickness direction of the watch strap (or, it can also be said that the thickness direction of the watch strap is perpendicular or nearly perpendicular to the first surface). Figure 8 The connecting ring 21 lies within the XY plane. For example, in some examples, it is used... Figure 8When the connecting ring 21 structure shown is used, with the same space between two adjacent links, the cross-sectional area of ​​the connecting ring in this example can be increased by more than 80%, which can significantly improve mechanical strength. Alternatively, it can be understood that it can ensure that the watch strap link assembly of this application has higher structural strength under the same space, reducing the risk of torsional failure of the watch strap link assembly.

[0156] Return to Figure 7 The first end 21A and the second end 21B of the connecting ring 21 are located in the XY plane, and the connecting part 21C can extend in the XY plane.

[0157] like Figure 9 As shown, Figure 9 It is along Figure 6 The cross-sectional view shown is cut from the M-plane, which is perpendicular to the extension direction of the connecting ring.

[0158] In this embodiment, the dimension of the cross-section (M surface) of the connecting ring 21 in the first direction is larger than its dimension in the second direction. The first direction is parallel to the thickness direction of the watch strap (e.g., Figure 9 The Z direction), the second direction (such as Figure 9 The X direction is perpendicular or substantially perpendicular to the first direction.

[0159] The cross-sectional shape of the connecting ring 21 can be varied, for example, Figure 9 The shape shown is close to a rectangle; for example, the cross-section of the connecting ring 21 can be an elliptical structure.

[0160] When the cross-sectional area (M-face) of the connecting ring 21 is larger in the first direction than in the second direction, the mechanical strength of the connecting ring can be further increased, thereby improving the performance of the watch strap connection assembly.

[0161] The link 1 in this application example has various structures, such as Figure 10 As shown, link 1 in this example includes an extension and a recess. A connecting rod can be disposed in the extension, and a connecting ring can be disposed in the recess. For example, in Figure 10 In the example, multiple extensions are included, which can be arranged circumferentially along link 1. For example, the multiple extensions can be arranged at equal intervals circumferentially along link 1.

[0162] Figure 10 In the example, link 1 may include a first extension 1D, a second extension 1E, and a third extension 1F. The first extension 1D, the second extension 1E, and the third extension 1F are arranged at equal intervals along the circumference of link 1, and a recess S is formed between two adjacent extensions. In some examples, a connecting ring 21 may be provided on each extension, and a connecting ring 21 may be provided on each recess S.

[0163] By placing the connecting rod 3 in the extension and the connecting ring 21 in the recess, the size of the link 1 in the XY plane is not large. While ensuring that the watch strap link assembly has many degrees of rotational freedom, the structure of the watch strap link assembly is more compact, and the watch strap link assembly does not have a large size in the length or width direction.

[0164] It should be noted that the above embodiments are described using the first extension 1D, the second extension 1E, and the third extension 1F as examples. It is understood that the embodiments of this application are not limited to this, and the number of extensions and the number of recesses can be increased or decreased.

[0165] like Figure 11 Among the multiple links 1 arranged along the width direction of the watch strap (such as the Y direction), the link 1 located between the two ends can have six first connecting surfaces, and three of the first connecting surfaces are provided with connecting rings 21, and the three first connecting surfaces are arranged at intervals; the link located at the end can have four second connecting surfaces, and two of the second connecting surfaces are provided with connecting rings 21, and the two second connecting surfaces are arranged at intervals.

[0166] like Figure 12 , Figure 12 This is a structural diagram of another watch strap link assembly 101 in this application.

[0167] The example provides a watch strap link assembly 101, including links along the length of the watch strap (e.g., ...). Figure 12 Multiple links 1 arranged in the X direction, and including links along the width direction of the strap (e.g., ... Figure 12 Multiple links 1 arranged in the Y direction. In this example, link 1 can be a hexagonal structure.

[0168] like Figure 13 and Figure 14 As shown, Figure 13 An example of a structural diagram of link 1 is provided. Figure 14 A schematic diagram illustrating the connection relationship between two links is provided.

[0169] In this example, such as Figure 13 A link 1 includes multiple connecting rings 21 disposed at the edge of the link 1, and the multiple connecting rings 21 are arranged circumferentially along the link 1. For example... Figure 14 ,and Figure 13 The link shown is connected to another link, which includes multiple connecting rods 3, which are arranged circumferentially along the link 1.

[0170] This can be understood as: such as Figure 14Along the thickness direction of the watch strap, link 1 includes an upper cover portion 1A and a lower cover portion 1B. The upper cover portion 1A and the lower cover portion 1B are opposite to each other, that is, the upper cover portion 1A and the lower cover portion 1B are arranged vertically along the thickness direction of the watch strap. Multiple connecting rods 3 are located at the edges of the upper cover portion 1A and the lower cover portion 1B, and the multiple connecting rods 3 connect the upper cover portion 1A and the lower cover plate 1B.

[0171] It should be noted that the above embodiments are illustrated with the connecting rod located at the edge as an example. It is understood that the embodiments of this application are not limited to this, and the connecting rod can also be set in other positions.

[0172] exist Figure 13 and Figure 14 In the example, the connecting ring 21 used to connect two adjacent links is located within the first surface, and the connecting ring 21 extends within the first surface. The first surface is parallel to the surface where the length and width directions of the watch strap are located, that is, the thickness direction of the watch strap is perpendicular to the first surface. Figure 13 The connecting ring 21 is located in the XY plane.

[0173] like Figure 15 , Figure 16 and Figure 17 , Figure 15 This is a structural diagram of another type of watch strap link assembly 101 in this application. Figure 16 It is along Figure 15 A cross-sectional view along the AA direction. Figure 17 A schematic diagram illustrating the connection relationship between two links is provided.

[0174] The example provides a watch strap link assembly 101, including links along the length of the watch strap (e.g., ...). Figure 15 Multiple links 1 arranged in the X direction, and including links along the width direction of the strap (e.g., ... Figure 15 Multiple links 1 arranged in the Y direction. In this example, link 1 can be a quadrilateral structure, such as a rectangular structure. For example, link 1 can be a square structure, a rectangular structure, etc.

[0175] In this example, such as Figure 16 and Figure 17 The connecting structure includes a connecting ring 21. Each link of two adjacent links has a connecting rod 3 on its edge. The connecting ring 21 is fitted onto the two connecting rods 3 to achieve a rotatable connection between two adjacent links 1.

[0176] In a link 1, there are multiple connecting rods 3 disposed on the edge of the link 1, and the multiple connecting rods 3 are arranged circumferentially along the link 1.

[0177] This can be understood as: along the thickness direction of the watch strap, such as... Figure 16The link 1 includes an upper cover portion 1A and a lower cover portion 1B, which are opposite to each other, i.e., the upper cover portion 1A and the lower cover portion 1B are arranged vertically along the thickness direction of the watch strap. Multiple connecting rods 3 are located at the edges of the upper cover portion 1A and the lower cover portion 1B, and the multiple connecting rods 3 connect the upper cover portion 1A and the lower cover 1B.

[0178] exist Figure 16 and Figure 17 In the example, the connecting ring 21 used to connect two adjacent links is located in the first surface, and the connecting ring 21 extends in the first surface. The first surface is parallel to the surface where the length direction and width direction of the watch strap are located, that is, the thickness direction of the watch strap is perpendicular to the first surface.

[0179] like Figure 18 , Figure 19 and Figure 20 , Figure 18 This is a structural diagram of another type of watch strap link assembly 101 in this application. Figure 19 Here is a structural diagram of a chain segment. Figure 20 A schematic diagram illustrating the connection relationship between two links is provided.

[0180] The example provides a watch strap link assembly 101, including links along the length of the watch strap (e.g., ...). Figure 18 Multiple links 1 arranged in the X direction, and including links along the width direction of the strap (e.g., ... Figure 18 Multiple links 1 arranged in the Y direction. In this example, link 1 can be a quadrilateral structure, such as a square structure.

[0181] In this example, such as Figure 19 A link 1 includes multiple connecting rings 21 disposed at the edge of the link 1, and the multiple connecting rings 21 are arranged at intervals along the circumference of the link 1. Figure 19 and Figure 20 When two adjacent links 1 are connected, the connecting rings 21 on the two links 1 are nested together to achieve a rotatable connection between the two links.

[0182] In some examples, the connecting loop 21 used to connect two adjacent links is located in the first surface, and the connecting loop 21 extends in the first surface, which is parallel to the surface where the length direction and width direction of the watch strap are located, that is, the thickness direction of the watch strap is perpendicular to the first surface.

[0183] In some other examples, the connecting loop 21 used to connect two adjacent links can extend along the thickness direction of the strap.

[0184] like Figure 21 , Figure 22 and Figure 23 , Figure 21 , Figure 22 and Figure 23These are structural diagrams of three other watch strap link components 101 as exemplified in this application.

[0185] Figure 21 The link 1 of the example watch strap link assembly 101 may include a triangular structure; Figure 22 The link 1 of the example watch strap link assembly 101 may include a parallelogram structure and a triangular structure; Figure 23 The link 1 of the example watch strap link assembly 101 may include a diamond-shaped structure.

[0186] For example, when link 1 is a triangular structure, a connecting ring, connecting rod or other connecting structure can be set at the apex of the triangle, or a connecting structure can be set on each side of the triangle.

[0187] It is understood that those skilled in the art can adapt the connecting rods, connecting rings, etc., according to the different shapes of the chain links. For example, based on the various embodiments of this application, the position, number, shape, connection method, etc. of the connecting rods and connecting rings can be adapted.

[0188] For example, the connecting structure can be placed on the side of the link or at the corner of the link.

[0189] The number of connecting rods and / or connecting rings can also be changed. For example, one connecting ring or connecting rod can be set at a corner or on one side, or multiple connecting rings or connecting rods can be set on one side. For example, two or three connecting rings can be set on one side.

[0190] The above embodiments illustrate direct connection as an example. It is understood that indirect connection can also be used, for example, by using other structures to connect the connecting structures on adjacent links. That is, the connecting ring of one link can be directly connected to the connecting ring of another link, or the connecting ring of one link can be directly connected to the connecting rod of another link. Alternatively, the connecting ring of one link and the connecting rod of another link can be indirectly connected through other connecting structures. For example, connecting ring a of one link is connected to connecting ring b of another link via connecting ring c. Similarly, connecting rod a of one link is connected to connecting ring b of another link via connecting ring c. Furthermore, the above embodiments use connecting rings and connecting rods as connecting structures 2. It is understood that other connecting structures 2 can also be used to achieve flexible connections between multiple links 1.

[0191] Figure 21 , Figure 22 and Figure 23In the example, two adjacent links 1 can be rotatably connected by a connecting ring, making the watch strap link assembly more flexible and providing better wearing comfort. The connecting ring 21 is located inside the first surface and extends within the first surface, with the thickness direction of the watch strap perpendicular to the first surface.

[0192] In some related watch strap link assemblies, for example, when the connecting ring has a first end and a second end that connect to the link, the first end and the second end are arranged along the thickness direction of the watch strap, that is, along the thickness direction of the watch strap, the first end and the second end are arranged vertically, so that the connecting part between the first end and the second end is inclined.

[0193] Compared to the connecting ring structure of the aforementioned related technologies, the connection ring structure using the example of this application, such as... Figure 10 , Figure 13 or Figure 16 The connecting ring 21 structure can make full use of the space in the XY plane, compress the size in the thickness direction of the watch band, and improve space utilization. For example, with the same watch band thickness, this application can increase the cross-sectional area of ​​the connecting ring to improve the connection strength of the connecting ring; and with the same cross-sectional area of ​​the connecting ring, the thickness of the watch band can be compressed.

[0194] The watch strap link assembly in this application is an integral structural component; or, a portion of the watch strap link assembly is an integral structural component. For example, a structure comprising multiple links along the length of the watch strap, multiple links along the width of the watch strap, and a connecting ring connecting adjacent links is an integral structural component.

[0195] Integrated molding ensures uniform growth of the entire chain link, resulting in better strength and corrosion resistance. In addition, integrated molding of the watch strap chain link assembly can shorten processing time, improve processing efficiency, and increase yield.

[0196] Among the available processes, the watch strap link assembly can be manufactured using a 3D printing BJ (Binder jetting) process, or it can be manufactured using a 3D process of Selective Laser Melting (SLM).

[0197] Figure 24 This is a simplified flowchart of a BJ (Binder jetting) adhesive spraying process exemplified in this application.

[0198] like Figure 24 BJ (Binder Jetting) adhesive jetting process includes:

[0199] S101: Spread a layer of metal powder on the printing platform, spray adhesive on the area to be formed of the metal powder, and perform solidification treatment.

[0200] S102: Lay another layer of metal powder, spray adhesive onto the area to be formed of the newly laid metal powder, and perform solidification treatment.

[0201] S103: Depending on the product size, the Nth layer of metal powder can be laid, adhesive can be sprayed onto the area to be formed of the Nth layer of metal powder, and solidification treatment can be performed.

[0202] S104: Further processing including powder cleaning, degreasing, and sintering. After degreasing, the product has very low hardness and density, requiring sintering to improve density and hardness.

[0203] In some 3D processes, the following can be used: Figure 24 The watch strap link assembly of this application is manufactured using the BJ (Binder jetting) adhesive spraying process. This can be understood as: the BJ (Binder jetting) adhesive spraying process can produce... Figure 2 , Figure 12 , Figure 15 , Figure 18 or Figures 21 to 23 The watch strap link assembly consists of multiple links 1 and connecting structures 2 in an integrated manner, eliminating the need for further assembly of the links and connecting structures.

[0204] use Figure 24 When preparing the watch strap link assembly of this application using the BJ (Binder jetting) adhesive spraying process shown, the following methods can be employed: Figure 25 Example process steps.

[0205] S201: Apply the first layer of powder. The material of this powder layer can be at least one of metal, ceramic, etc.

[0206] S202: Spray adhesive onto the position to be formed of the first layer of powder, and the powder at the position to be formed of the first layer of powder solidifies to obtain a first part. The first part includes at least a portion of a plurality of links. The plurality of links include a plurality of links arranged along the length direction of the belt and a plurality of links arranged along the width direction of the belt.

[0207] For example, the first part can be at least a portion of the lower cover portion 1B of link 1, since the multiple links in this example include multiple links arranged along the length direction of the strap and multiple links arranged along the width direction of the strap. That is, the lower cover portions 1B of multiple links in the strap link assembly can be manufactured simultaneously.

[0208] S203: Apply the (N-1)th layer of powder, where N ≥ 3. The material of this layer of powder can be the same as that of the first layer of powder.

[0209] S204: Spray adhesive onto the position to be formed of the (N-1)th layer of powder, and the powder at the position to be formed of the (N-1)th layer of powder solidifies to obtain the (N-1)th part, which includes at least a portion of a plurality of chain segments and at least a portion of a connecting ring.

[0210] S205: Apply the Nth layer of powder.

[0211] S206: Apply adhesive to the desired forming position of the Nth layer of powder. The powder at the desired forming position of the Nth layer of powder solidifies, forming the Nth part. This forms multiple links and connecting rings. The connecting rings are located within the first surface and extend within the first surface. The powder stacking direction is perpendicular to the first surface. In this way, a belt link assembly can be formed.

[0212] The process described in this application can produce a one-piece watch strap link assembly. Compared with some processes that produce individual links and then assemble them, this application can improve efficiency, increase yield, and shorten preparation time.

[0213] In some processes, the surface of the integral belt link assembly can be polished, for example, using chemical polishing. Chemical polishing reduces manual labor, improves efficiency, and lowers costs. In other processes, the surface of the integral belt link assembly can be coated, which can be understood as integral coating. For example, physical vapor deposition (PVD) can be used for integral coating. Compared to coating individual links and then assembling them, this application can reduce manual labor and yield losses in assembly parts, thus lowering costs.

[0214] In some examples, it is possible to use Figure 25 The method produces the watchband link assembly; in other examples, the method employs... Figure 25 The method can also be used to make other accessories, such as necklaces, bracelets, and phone charms.

[0215] use Figure 25 When the method produces the watch strap link assembly, the watch strap connector for connecting to the watch body can be produced simultaneously.

[0216] When preparing the watch strap link assembly of this application based on the above-mentioned BJ (Binder jetting) adhesive spraying process, no support structure is required. The resulting connecting ring 21 is located in the XY plane and has a suspended structure. That is to say, the connecting ring does not have to be inclined along the thickness direction of the watch strap.

[0217] When preparing the watch strap link assembly of this application using the BJ (Binder jetting) adhesive spraying process, no support structure is required. It can be understood that during the process, when the next layer of powder is laid, the adhesive is sprayed onto the part of the previous layer of powder to be formed (which can be called the green body) and solidifies. Then, the solidified part of the previous layer can serve as a support layer to support the next layer of the structure to be formed.

[0218] In this embodiment of the application, there are other improvements to the connecting ring 21, as detailed below.

[0219] like Figure 26 , Figure 27 and Figure 28 As shown, Figure 26 This is a structural diagram of a watch strap link assembly provided in an embodiment of this application. Figure 27 It is along Figure 26 A cross-sectional view of BB. Figure 28 This is a cross-sectional view of a link along the XY axis provided in an embodiment of this application.

[0220] In this example, link 1 has a cavity 5, meaning the link is hollow. This reduces the weight of the link; for example, compared to a solid link structure, it can reduce weight by more than 20%, thus improving the user experience.

[0221] In some implementation structures, such as Figure 27 and Figure 28 The link 1 includes an upper cover portion 1A and a lower cover portion 1B, and the space enclosed by the upper cover portion 1A and the lower cover portion 1B may include the cavity 5.

[0222] To improve the mechanical strength of this link, such as Figure 28 A support rod 4 can be installed inside the cavity 5, with one end of the support rod 4 connected to the upper cover part 1A and the other end connected to the lower cover part 1B. For example, the support rod 4 can be installed close to the center of the cavity 5.

[0223] exist Figure 27 and Figure 28 In the example, the space enclosed by the upper cover portion 1A and the lower cover portion 1B is connected to the outside. This can be understood as follows: within a link, there is a gap between two adjacent connecting loops 21, meaning they are not connected, so that the space enclosed by the upper cover portion 1A and the lower cover portion 1B is connected to the outside. This further reduces the weight of the watch strap link assembly, for example, by more than 30%, improving the user experience.

[0224] like Figure 29 and Figure 30 As shown, Figure 29 This is a structural diagram of a watch strap link assembly provided in an embodiment of this application. Figure 30 It is along Figure 29A cross-sectional view of CC section.

[0225] In this example, link 1 has a cavity 5, meaning the link is hollow, which reduces the weight of the link.

[0226] The space enclosed by the upper cover portion 1A and the lower cover portion 1B is a closed space. This can be understood as follows: the gap between two adjacent connecting rings is connected by the connecting portion 1C, so that the space enclosed by the upper cover portion 1A and the lower cover portion 1B is a closed space. In this way, liquid can be prevented from entering the chain link, reducing the possibility of chain link corrosion.

[0227] In some other examples, such as Figure 31 As shown, Figure 31 It is along Figure 29 The diagram shows another cross-sectional view of the CC section, in which the gaps between two adjacent first connecting rings are connected by a connecting portion 1C, and a hole 1D is provided on the connecting portion 1C. This hole 1D can be a vent hole. For example, in some BJ (Binder jetting) adhesive spraying processes, when the watch strap link assembly is manufactured, the vent hole can be used to discharge the powder or other media in the cavity during air cleaning.

[0228] Among the selectable processes, the above-mentioned methods can be used. Figure 25 The example method produces a watch strap link assembly with cavities inside the links. During the powder cleaning process, either fluid powder cleaning or air powder cleaning can be used. Using fluid powder cleaning ensures that the structural integrity is not damaged during cleaning and provides a good powder cleaning effect.

[0229] In some other processes, the watchband link assembly can be made in two parts, for example, by making an upper half (which can be called the first half) and a lower half (which can be called the second half), then using an adhesive to connect the upper half and the lower half, and then performing powder cleaning, degreasing, and sintering.

[0230] like Figure 32 As shown, Figure 32 This is a diagram illustrating a method for manufacturing a watch strap link assembly with a cavity within the link, as exemplified in this application.

[0231] S301A: To obtain an upper half-band with a hollow groove.

[0232] When the upper half belt is made, it may include the first part of multiple links, or it may include the first part of multiple links and the first part of the connecting ring.

[0233] S301B: To produce a lower half-band with a hollow groove.

[0234] When the lower half of the belt is made, it may include a second part of multiple links, or it may include a second part of multiple links and a second part of a connecting ring.

[0235] In this example, the thickness of the first part of the multiple links 1 can be equal to the thickness of the second part of the multiple links 1, or the thickness of the first part of the multiple links 1 can be greater than the thickness of the second part of the multiple links 1.

[0236] The thickness of the first part of the connecting ring 21 can be equal to the thickness of the second part of the connecting ring 21, or the thickness of the first part of the connecting ring 21 can be greater than the thickness of the second part of the connecting ring 21.

[0237] S302: The upper and lower half of the belt are connected by an adhesive, with the slots in the upper half and the lower half facing each other to form a cavity.

[0238] S303: Powder removal, degreasing, and sintering. To produce watchband link assemblies with cavities within the links. Air powder removal can be used during the powder removal process.

[0239] When producing an upper half-band with a hollow groove, or a lower half-band with a hollow groove, it can be produced using the BJ (Binderjetting) adhesive spraying process.

[0240] like Figure 33 As shown, Figure 33 This is a diagram illustrating another method for preparing a watch strap link assembly with cavities within the links, as exemplified in this application.

[0241] S401: The entire watch strap is produced by laser selective melting.

[0242] S402: Powder removal. For example, air can be used for powder removal.

[0243] Figure 34 It is along Figure 26 The diagram shown is another cross-sectional view of BB section. Figure 35 This is a cross-sectional view of another link 1 provided in the embodiments of this application.

[0244] In this example, the space enclosed by the upper cover portion 1A and the lower cover portion 1B of link 1 is filled with a filler 6. For example, when the space enclosed by the upper cover portion 1A and the lower cover portion 1B of link 1 is connected to the outside, foreign objects may enter the link 1 and cause corrosion. By filling the space enclosed by the upper cover portion 1A and the lower cover portion 1B of link 1 with the filler 6, damage to the link by foreign objects can be prevented.

[0245] In some examples, the filler 6 can fill the space enclosed by the upper cover portion 1A and the lower cover portion 1B, or, as... Figure 35The space enclosed by the upper cover portion 1A and the lower cover portion 1B is filled with filler 6.

[0246] The filler 6 can be made of a variety of materials, such as at least one of ceramics, silicon dioxide, etc.

[0247] The BJ (Binder Jetting) adhesive spraying process can be used to prepare adhesives containing... Figure 34 The watch strap link assembly shown is made in two parts, for example, by making an upper half and a lower half, and then filling the empty slots in the upper half or the lower half with filler; then using an adhesive to connect the upper half and the lower half, and then cleaning, degreasing and sintering.

[0248] like Figure 36 , Figure 37A and Figure 37B As shown, Figure 36 This is a diagram illustrating a method for preparing a watch strap link assembly with filler within the link, as exemplified by this application. Figure 37A and Figure 37B A process structure diagram of the preparation method is shown.

[0249] like Figure 36 S501A: The upper half of the belt with a slot is obtained.

[0250] When the upper half belt is made, it may include the first part of multiple links, or it may include the first part of multiple links and the first part of the connecting ring.

[0251] For example, adopt Figure 36 The S501A process can produce such... Figure 37A The structure shown is in Figure 37A In the structure, the upper half of the band has a slot on the side facing the lower half of the band.

[0252] like Figure 36 S501B: To produce a lower half-band with a slot.

[0253] When the lower half of the belt is made, it may include a second part of multiple links, or it may include a second part of multiple links and a second part of a connecting ring.

[0254] For example, adopt Figure 36 The S501B process can produce such... Figure 37A The structure shown is in Figure 37A In the structure, the lower half of the band has a slot on the side facing the upper half of the band.

[0255] In this example, the thickness of the first part of the multiple links 1 can be equal to the thickness of the second part of the multiple links 1, or the thickness of the first part of the multiple links 1 can be greater than the thickness of the second part of the multiple links 1.

[0256] The thickness of the first part of the connecting ring can be equal to the thickness of the second part of the connecting ring, or the thickness of the first part of the connecting ring can be greater than the thickness of the second part of the connecting ring.

[0257] like Figure 36 S502: Filler material is placed in the empty slot of the upper half or the empty slot of the lower half.

[0258] For example, adopt Figure 36 The S502 process can produce such... Figure 37B The structure shown is in Figure 37B In the example, the filler is placed inside the empty slot in the lower half of the band. In some structures, the filler may protrude from the empty slot, or it can be understood that part of the filler is located outside the empty slot.

[0259] like Figure 36 S503: The upper and lower half of the belt are connected by an adhesive.

[0260] like Figure 36 S504: Powdering, degreasing, and sintering. To obtain a watch strap link assembly with filler inside the link.

[0261] In some processes, the use of fillers can prevent poor appearance caused by sintering deformation in hollow areas.

[0262] In some other processes, the following can be used: Figure 38 The method shown produces a watch strap link assembly with filler inside the link. Figure 39A , Figure 39B and Figure 39C A process structure diagram of the preparation method is shown.

[0263] like Figure 38 S601: Laser selective melting of the lower half of the zone with a cavity.

[0264] When manufacturing a lower strap with a slot, it may include a first part of multiple links, or a first part of multiple links and a first part of a connecting ring.

[0265] For example, adopt Figure 38 The S601 process can produce such... Figure 39A The structure shown is in Figure 39A In the example, the lower half of the band has an empty slot.

[0266] like Figure 38 S602: Filler is placed in the empty slot of the lower half of the band.

[0267] For example, adopt Figure 38 The S602 process can produce such... Figure 39B The structure shown is in Figure 39B In the example, the empty slot in the lower half is filled with filler material. In some structures, filler material 6 can be flush with the surface of the empty slot.

[0268] like Figure 38 S603: Laser Selective Melting Capping. For example, the capping thickness is less than the thickness of the lower stripe.

[0269] For example, adopt Figure 38 The S603 process can produce such... Figure 39C The structure shown is in Figure 39C In the example, a cap is placed on the lower half of the strip, which has filling.

[0270] like Figure 38 S604: Cut support, anneal. To obtain a watch strap link assembly with filler inside the links.

[0271] In some embodiments, the melting point of filler 6 is greater than that of link 1. Thus, when the watch strap link assembly is manufactured using the BJ (Binderjetting) adhesive spraying process, since the melting point of filler 6 is greater than that of link 1, and also greater than that of connecting ring 21, the upper and lower half of the green belt can melt and bond together during degreasing or sintering, but filler 6 will not melt.

[0272] In some other watch strap link assemblies, the filler 6 includes a magnetic material.

[0273] Return to Figure 1 As shown, the watch strap includes a first watch strap link assembly 101 and a second watch strap link assembly 201. A filler 6 with magnetic material can be provided in at least one of the first watch strap link assembly 101 or the second watch strap link assembly 201, so that when the user wears the watch strap, the first watch strap link assembly 101 and the second watch strap link assembly 201 can fit together, improving wearing comfort.

[0274] The multiple links 1 in the example of this application have various arrangements, such as Figure 40 As shown, Figure 40 One method for arranging multiple chain links 1 is given.

[0275] exist Figure 40 In the watch strap, multiple links arranged along the width direction (such as the Y direction) include multiple first links 11 and multiple second links 12, wherein one second link 12 is connected to two first links 11, and one first link 11 is connected to two second links 12.

[0276] For example, in Figure 40The image shows three link components: link component A, link component B, and link component C. Link components A, B, and C are arranged sequentially along the length of the watch strap (e.g., the X direction). Each link component includes multiple first links 11 and multiple second links 12. One second link 12 is connected to two first links 11, and one first link 11 is connected to two second links 12.

[0277] See you later Figure 40 In each link assembly, the first link 11 and the second link 12 are staggered in the length direction (such as the X direction) of the strap.

[0278] The first link 11 and the second link 12 are arranged in a staggered manner along the length of the watch strap: the first link 11 protrudes towards the first side compared to the two adjacent second links 12, and the second link 12 protrudes towards the second side compared to the two adjacent first links 11. The direction from the first side to the second side is parallel to the length of the watch strap (such as the X direction).

[0279] like Figure 40 In any link assembly, a first link 11 and two second links 12 connected to the first link 11 form a first receiving cavity 131, the first receiving cavity 131 being used to receive a link located on one side (e.g., Figure 40 The first link 11 (on the second side) and the second link 12 and the two first links 11 connected to the second link 12 form a second receiving cavity 132, which is used to receive the part located on the other side (e.g., the second side). Figure 40 The second link 12 of the first side of the chain.

[0280] like Figure 40 The multiple links 1 shown are arranged in a honeycomb structure, which not only enhances the overall aesthetics of the watchband, but also allows adjacent links to be connected by a connection structure that enables the links to have multiple degrees of rotational freedom, thereby making the entire watchband more flexible and comfortable to wear.

[0281] In some examples, the multiple links 1 can also be arranged in other ways. For example, multiple links can be arranged side by side along the length of the strap, or in a honeycomb structure along the width of the strap.

[0282] For example, in the above embodiment, the example described uses multiple links distributed in both the length and width directions of the watch strap, connected by a connecting structure. It can be understood that multiple links can also be connected only in the length direction or only in the width direction of the watch strap. For instance, the width of a link can be set to be close to or equal to the width of the watch strap, connecting multiple links arranged along the length direction using a connecting structure; similarly, the length of a link can be set to be close to or equal to the length of the watch strap, connecting multiple links arranged along the width direction using a connecting structure. For example, the M links arranged along the length direction of the watch strap include: link 1, link 2, link 3, ..., link M-1, link M, where link 1 is connected to link 2 via a connecting structure, link 2 is connected to link 3 via a connecting structure, and so on, with link M-1 connected to link M via a connecting structure. Here, M is a positive integer greater than 2.

[0283] For example, L links arranged along the width of the watch strap include: link 1, link 2, link 3, ..., link L-1, link L. Link 1 is connected to link 2 via a connecting structure, link 2 is connected to link 3 via a connecting structure, and so on, with link L-1 connected to link L via a connecting structure. Here, M is a positive integer greater than 2.

[0284] Optionally, patterns can be added to the links to improve aesthetics. For example, when the width of a link is greater than its length, and multiple links are connected only along the length of the strap using a connecting structure, patterns can be added along the width of the strap to make it appear as if multiple links are also arranged along the width of the strap.

[0285] In some processes, the watch strap assembly manufacturing method provided in the embodiments of this application can be used when producing the watch strap. In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0286] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A watchband link assembly (101), characterized by, The watchband chain link assembly (101) comprises: a plurality of chain links (1) arranged along the length direction of the watchband, and / or a plurality of chain links (1) arranged along the width direction of the watchband; a connecting ring (21) connecting two adjacent chain links (1), and the chain links (1) can rotate through the connecting ring (21).

2. The watchband chain link assembly (101) according to claim 1, wherein: the connecting ring (21) is located in a first plane, and the connecting ring (21) extends in the first plane, and the thickness direction of the watchband is perpendicular to the first plane.

3. The watchband link assembly (101) according to claim 1 or 2, characterized in that The watchband chain link assembly is an integral structure.

4. The watchband link assembly (101) according to claim 1 or 2, characterized in that The watchband chain link assembly is made by a 3D binder jetting process.

5. The watchband link assembly (101) of claim 3, wherein, The watchband chain link assembly is made by a 3D binder jetting process.

6. The watchband link assembly (101) of claim 1 or 2, wherein, The size of the cross section of the connecting ring (21) in a first direction is greater than the size of the cross section of the connecting ring (21) in a second direction. The cross section of the connecting ring (21) is perpendicular to the extension direction of the connecting ring (21), the first direction is parallel to the thickness direction of the watchband, and the second direction is perpendicular to the first direction.

7. The watchband link assembly (101) of claim 1 or 2, wherein, The first end portion (21A) and the second end portion (21B) of the connecting ring (21) are respectively connected to the side wall surface of the chain link (1), the connection position of the first end portion (21A) and the chain link (1) and the connection position of the second end portion (21B) and the chain link (1) are located in a first plane, the connecting portion (21C) connecting the first end portion (21A) and the second end portion (21B) extends in the first plane, and the thickness direction of the watchband is perpendicular to the first plane.

8. The watchband link assembly (101) of claim 7, wherein, The area of the cross section of the connecting portion (21C) is smaller than the area of the cross section of the first end portion (21A).

9. The watchband chain link assembly (101) according to claim 1 or 2, wherein: the connecting ring (21) is arranged on one of the two adjacent chain links (1), the edge of the other chain link (1) has a connecting rod (3), and the connecting ring (21) is sleeved with the connecting rod (3).

10. The watchband link assembly (101) of claim 9, wherein, In one of the chain links (1), a plurality of connecting rods (3) and a plurality of connecting rings (21) are arranged alternately along the circumference of the chain link (1).

11. The watchband link assembly (101) of claim 9, wherein, In one of the chain links (1), a plurality of connecting rings (21) are arranged along the circumference of the chain link (1), and in the other chain link (1), a plurality of connecting rods (3) are arranged along the circumference of the chain link (1).

12. The watchband link assembly (101) of claim 1 or 2, wherein, The chain link (1) has a cavity (5) therein.

13. The watchband link assembly (101) of claim 1 or 2, wherein, The chain link (1) comprises an upper cover portion (1A) and a lower cover portion (1B), and the upper cover portion (1A) and the lower cover portion (1B) are opposite to each other. The space enclosed by the upper cover portion (1A) and the lower cover portion (1B) is a closed space; or The space enclosed by the upper cover portion (1A) and the lower cover portion (1 B) is connected to the outside.

14. The watchband link assembly (101) of claim 13, wherein, The space surrounded by the upper cover part (1A) and the lower cover part (1B) is filled with a filler (7).

15. The watchband link assembly (101) of claim 14, wherein, The melting point of the filler (7) is greater than the melting point of the chain link (1), and the melting point of the filler (7) is greater than the melting point of the connecting ring (21).

16. The watchband link assembly (101) of claim 14, wherein, The filler (7) comprises a magnetic material.

17. The watchband link assembly (101) of claim 1 or 2, wherein, The plurality of chain links (1) arranged along the width direction of the watchband comprises a plurality of first chain links (11) and a plurality of second chain links (12), wherein one second chain link (12) is connected with two first chain links (11), and one first chain link (11) is connected with two second chain links (12). The first chain link (11) and the second chain link (12) are arranged in a staggered manner in the length direction of the watchband. The first chain link (11) and the two second chain links (12) connected with the first chain link (11) surround a first accommodating cavity (131), and the first accommodating cavity (131) is used for accommodating the first chain link (11) located on one side. The second chain link (12) and the two first chain links (11) connected with the second chain link (12) surround a second accommodating cavity (132), and the second accommodating cavity (132) is used for accommodating the second chain link (12) located on the other side.

18. The watchband link assembly (101) of claim 1 or 2, wherein, The chain link (1) comprises an extension part and a recessed part, and the connecting ring (21) is arranged in the recessed part.

19. The watchband link assembly (101) of claim 1 or 2, wherein, The chain link (1) comprises at least one of a hexagonal structure, a parallelogram structure, a rectangular structure, or a rhombic structure.

20. A watchband (100), characterized in that, Comprising: The watchband chain link assembly (101) according to any one of claims 1-19; A watchband connector (102) connected at the end of the watchband chain link assembly (101).

21. A wearable device, comprising: Comprising: A watch body; The watch (100) according to claim 20, wherein the watch body is connected with the watchband connector (102).

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