A flexible metal watchband based on a 3D printing process

Abstract

The utility model belongs to the technical field of wearing equipment, concretely is a flexible metal watchband based on 3D printing process. Provide a kind of flexible metal watchband based on 3D printing process with wearing comfort and aesthetic appearance. Including at least two connecting band bodies extending along first direction, two adjacent connecting band bodies are detachably connected and locked by folding sheet buckle, the end of each connecting band body is connected with the connecting sleeve for being movably connected with watch dial, each connecting band body includes outer chain particle and inner chain particle movably sleeved. The flexible metal watchband can realize multi-angle free silk sliding twist by the movably sleeved outer chain particle and inner chain particle and chain lever oblique bending design, forms multiple contact surfaces with hidden viewing angle, can be perfectly fitted to human wrist, is favorable for improving comfort and aesthetic appearance, and the locking structure formed by folding sheet buckle and multiple bevels can realize the quick multi-stage adjustment of watchband length.

Description

Technical Field

[0001] This utility model belongs to the field of wearable device technology, specifically a flexible metal watch strap based on 3D printing technology. Background Technology

[0002] Traditional metal watch straps often use rigid links and pins for connection. Although the structure is stable, the fit is poor and it is difficult to adapt to different wrist curvatures. In particular, gaps or pressure may occur when the wrist is moving.

[0003] Existing flexible metal watch bands, such as the 3D-printed flexible metal watch band and wearable device with authorization announcement number CN221711373U and application date January 30, 2024, include multiple unit modules that are sequentially nested along a first direction. Each unit module includes multiple unit bodies that are sequentially connected along a second direction. Each unit body includes at least two loops and at least one connector. The at least two loops are spaced apart, and the two ends of the connector are respectively connected to the two loops. In two adjacent unit modules, the loops of one unit module are nested on the connectors of the other unit module, with the first and second directions forming an angle.

[0004] For example, a 3D-printed flexible metal watchband and wearable device, with authorization announcement number CN221554850U and application date of January 30, 2024, includes multiple socket units that are sequentially socketed along a first direction. Each socket unit includes unit bodies that are sequentially connected along a second direction. Each unit body includes at least two connected sub-units, and each sub-unit includes multiple connectors. The first ends of the multiple connectors are connected to make the multiple connectors radially distributed. In two adjacent sub-units, the second ends of the multiple connectors of one sub-unit are connected one-to-one with the second ends of the multiple connectors of the other sub-unit, so that the two adjacent sub-units define a socket hole. Although the above-described flexible metal watchband has a simple structure, requires no assembly, and has the advantages of multiple gaps and strong breathability, it is a chain-type movable connection structure, which easily creates a point-line contact pressure on the human wrist, resulting in reduced wearing comfort. In addition, the overall appearance is exposed and not aesthetically pleasing, lacking a concealed viewing angle. Utility Model Content

[0005] In order to overcome the shortcomings of existing watch straps in actual wear, this utility model provides a flexible metal watch strap based on 3D printing technology that combines wearing comfort and aesthetics.

[0006] The technical implementation of this utility model is as follows: a flexible metal watch strap based on 3D printing technology, comprising at least two connecting straps extending along a first direction, adjacent connecting straps being detachably connected and locked by a folding buckle, and each connecting strap having a connecting sleeve for movably connecting with the watch face at its end. Each connecting strap includes an outer chain link and an inner chain link that are movably sleeved with each other. The outer chain link includes a first connecting seat and a plurality of first chain rods integrated within the first connecting seat. The inner chain link includes a second connecting seat and a plurality of second chain rods integrated between the second connecting seats. Adjacent first chain rods and second chain rods are movably sleeved to form a flexible connection structure.

[0007] In some embodiments, the first connecting seat is an inverted U-shaped structure, the first chain rods are distributed circumferentially, and their two ends are respectively connected between the same side diagonally opposite the inner top surface and the inner bottom surface of the first connecting seat; and the second connecting seat includes a first connecting block and a second connecting block that are aligned vertically, the second chain rods are distributed circumferentially, and their two ends are respectively connected between the same side diagonally opposite the lower side surface of the first connecting block and the upper side surface of the second connecting block.

[0008] In some embodiments, the middle portion of each of the first chain links is a diagonally bent structure, and the middle portion of each of the second chain links is also a diagonally bent structure.

[0009] In some embodiments, the oblique bending structure of the first link extends outward from the edge of the first connecting seat, and the oblique bending structure of the second link extends outward from the edges of the first connecting block and the second connecting block.

[0010] In some embodiments, the oblique bending structure of the adjacent first chain rod and the oblique bending structure of the second chain rod are movably connected to each other to form a flexible movable connection structure of the connecting belt body, so that the adjacent outer chain particles and inner chain particles can twist at any angle.

[0011] In some embodiments, the outer diameters of the first and second chain links are 0.25 mm to 0.7 mm.

[0012] In some embodiments, the outer chain particles are sequentially nested along a first direction, and the inner chain particles are sequentially nested along the first direction and a second direction, with the outer chain particles located on both sides of the inner chain particles in the second direction.

[0013] In some embodiments, the upper side of the first connecting seat with the inverted U-shaped structure is flush with the upper side of the first connecting block, together forming an upper reference plane; the lower side of the first connecting seat with the inverted U-shaped structure is flush with the lower side of the second connecting block, together forming a lower reference plane; both the upper and lower reference planes are composed of multiple movable and adjustable contact surfaces spliced ​​together.

[0014] In some embodiments, one of the connecting straps integrates an adjustment area for adjusting the wearing length, and the adjustment area is arranged along a first direction.

[0015] In some embodiments, the first connecting block in the adjustment area is provided with oblique openings on both sides along the first direction, which are adapted to the folding buckle. The oblique openings cooperate with the folding buckle to form a multi-level positioning and locking structure for adjusting the wearing length.

[0016] This utility model has the following advantages: The flexible metal watchband, through the movable interlocking of the outer and inner chain links and the oblique bending design of the chain rod, can achieve free and smooth twisting at multiple angles, forming multiple contact surfaces with hidden viewing angles. This allows it to perfectly fit the human wrist, improving comfort and aesthetics. Furthermore, the locking structure formed by the folding buckle and multiple oblique openings enables rapid multi-level adjustment of the watchband length. In addition, the flexible metal watchband is integrally molded using metal 3D printing, resulting in a stable structure without seams. It combines high strength, excellent sealing, and a high-end feel, retaining the durability of metal while providing a soft wearing experience similar to a fabric watchband. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a single flexible metal watch strap according to the present invention.

[0018] Figure 2 This is a schematic diagram of the connection structure of multiple outer chain particles and inner chain particles of this utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure of a single outer chain particle and an inner chain particle of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the inner chain particles of this utility model.

[0021] Figure 5 This is a top view of the inner chain particles of this utility model.

[0022] Figure 6 This diagram illustrates the arbitrary deformation state of a single flexible metal watch strap according to this utility model.

[0023] Figure 7 This is a schematic diagram of the connection structure between the double flexible metal watch strap and the folding buckle of this utility model.

[0024] Figure 8 This diagram shows the locking state of the folding clip and the angled opening of this utility model.

[0025] In the above attached figures: 1: connecting belt body, 100: outer chain link, 101: first connecting seat, 102: first chain rod, 103: connecting sleeve, 2: second connecting seat, 200: inner chain link, 201: first connecting block, 202: second connecting block, 203: second chain rod, 204: bevel, 3: folding buckle, 300: adjustment area. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of the present invention, unless otherwise stated, "multiple or several" means two or more.

[0027] Example: This utility model provides a flexible metal watch strap based on 3D printing technology, see [link / reference]. Figures 1 to 8The watch band includes a connecting strap body 1, a folding buckle 3, and a connecting sleeve 103. There are two connecting strap bodies 1, extending along a first direction. The two connecting strap bodies 1 are detachably connected and locked together by the folding buckle 3. The ends of the two connecting strap bodies 1 are respectively connected to connecting sleeves 103 for movable connection with the watch dial. The folding buckle 3 is a mature and universally available accessory, mainly comprising a main buckle frame, a movable folding piece, a locking tongue, a quick-adjustment lever, and a watch band connector. The two connecting sleeves 103 are hinged to the watch band connector. Adjusting the folding buckle 3 allows for quick opening and closing, length adjustment, and secure locking of the flexible metal watch band. The operation is simple and convenient. Each connecting strap body 1 includes an outer link 100 and an inner link 200 that are movably interlocked. The outer link 100 extends along... The inner links 200 are sequentially connected in the first direction and the second direction, and the outer links 100 are located on both sides of the inner links 200 in the second direction. The outer links 100 include a first connecting seat 101 and three first links 102 integrated in the first connecting seat 101. The inner links 200 include a second connecting seat 2 and four second links 203 respectively integrated between the second connecting seats 2. The adjacent first links 102 and second links 203 are movably connected to form a flexible connection structure with a hidden viewing angle, which is more aesthetically pleasing and helps to improve wearing comfort. This flexible metal watchband is different from metal watchbands made by ordinary processes. It does not need to be connected by connecting pins. The structure is relatively simple, and it can be made thinner and lighter, with lower manufacturing costs.

[0028] In some embodiments, the first connecting seat 101 has an inverted U-shaped structure, and the first link 102 is distributed circumferentially, with its two ends connected to the diagonally opposite sides of the inner top and bottom surfaces of the first connecting seat 101 respectively. The second connecting seat 2 includes a first connecting block 201 and a second connecting block 202 that are aligned vertically, and the second link 203 is distributed circumferentially, with its two ends connected to the diagonally opposite sides of the lower side of the first connecting block 201 and the upper side of the second connecting block 202 respectively. This design maximizes the range of motion adjustment between adjacent first link 102 and second link 203, thereby enhancing the softness of the metal watchband and making it more comfortable to wear.

[0029] In some embodiments, the middle portion of each first chain link 102 is a slanted bend structure, and the middle portion of each second chain link 203 is also a slanted bend structure; the slanted bend structure of the first chain link 102 extends outward from the edge of the first connecting seat 101, and the slanted bend structure of the second chain link 203 extends outward from the edges of the first connecting block 201 and the second connecting block 202; the slanted bend structures of adjacent first chain links 102 and second chain links 203 are movably connected to each other, together forming a flexible movable connection structure of the connecting band 1, so that adjacent outer chain links 100 and inner chain links 200 can twist at any angle, which helps to improve the silky feel when wearing; wherein, To ensure the structural strength of this metal watchband, the outer diameters of the first link 102 and the second link 203 are 0.25mm-0.7mm, specifically 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.30mm, 0.35mm, 0.45mm, 0.55mm, 0.65mm, and 0.7mm. This allows for control over the amount of printing material used while ensuring the connection strength between the outer link 100 and the inner link 200. Of course, in other embodiments of this invention, the diameters of the first link 102 and the second link 203 can be selected according to actual needs.

[0030] In some embodiments, the upper side of the first connecting seat 101 with the inverted U-shaped structure is flush with the upper side of the first connecting block 201, together forming an upper reference plane. The lower side of the first connecting seat 101 with the inverted U-shaped structure is flush with the lower side of the second connecting block 202, together forming a lower reference plane. The upper and lower reference planes are composed of multiple movable and adjustable contact surfaces, which helps to further improve the comfort and aesthetics of wearing.

[0031] In addition, in some embodiments, the connecting strap 1 integrates an adjustment area 300 for adjusting the wearing length, and the adjustment area 300 is arranged along the first direction; the first connecting block 201 in the adjustment area 300 is provided with oblique openings 204 adapted to the folding buckle 3 on both sides along the first direction, and the oblique openings 204 and the folding buckle 3 cooperate to form a multi-level positioning and locking structure for adjusting the wearing length, so as to make the length adjustment more convenient.

[0032] This flexible metal watchband achieves multiple breakthroughs in structural design and manufacturing process, bringing a comfortable, stable, and convenient wearing experience. Specifically, through the movable interlocking structure of the outer link 100 and the inner link 200, and the oblique bending design of the first link 102 and the second link 203, it can achieve free and smooth twisting at any angle, forming multiple contact surfaces that perfectly conform to the human wrist, bringing a hidden viewing experience. This not only greatly improves wearing comfort but also enhances the overall aesthetics of the watch. It avoids the multiple contact points or segments of contact between the watchband and the human body that occur with existing exposed chain flexible metal watchbands, thus preventing wearers from experiencing discomfort. The design addresses issues such as reduced wearing comfort and insufficient overall aesthetics. Furthermore, by utilizing the folding clasp 3 in conjunction with the beveled opening 204 at the adjustment area 300, a multi-level positioning and locking structure can be formed, allowing users to quickly adjust the strap length. This is convenient and adaptable to different wearing scenarios. The entire strap is integrally molded using metal 3D printing technology, precisely achieving a complex flexible structure while eliminating seams, effectively improving the overall strength, aesthetics, and water and dust resistance. Ultimately, while retaining the high-end texture and durability of the metal material, it achieves a soft experience close to that of a fabric strap, thus satisfying users' dual needs for quality and comfort.

[0033] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A flexible metal watchband based on 3D printing technology, characterized in that, It includes at least two connecting straps (1) extending along a first direction. Adjacent connecting straps (1) are detachably connected and locked by a folding buckle (3). The end of each connecting strap (1) is connected to a connecting sleeve (103) for movable connection with the watch dial. Each connecting strap (1) includes an outer chain link (100) and an inner chain link (200) that are movably connected to each other. The outer chain link (100) includes a first connecting seat (101) and a plurality of first chain rods (102) integrated in the first connecting seat (101). The inner chain link (200) includes a second connecting seat (2) and a plurality of second chain rods (203) integrated between the second connecting seats (2). Adjacent first chain rods (102) and second chain rods (203) are movably connected to form a flexible connection structure.

2. A flexible metal watchband based on 3D printing technology according to claim 1, characterized in that, The first connecting seat (101) has an inverted U-shaped structure. The first chain rods (102) are distributed circumferentially, and their two ends are respectively connected between the same side diagonally opposite the inner top surface and the inner bottom surface of the first connecting seat (101). The second connecting seat (2) includes a first connecting block (201) and a second connecting block (202) that are aligned vertically. The second chain rods (203) are distributed circumferentially, and their two ends are respectively connected between the same side diagonally opposite the lower side surface of the first connecting block (201) and the upper side surface of the second connecting block (202).

3. A flexible metal watchband based on 3D printing technology according to claim 1, characterized in that, The middle part of each of the first link (102) is a diagonal bend structure, and the middle part of each of the second link (203) is also a diagonal bend structure.

4. A flexible metal watchband based on 3D printing technology according to claim 3, characterized in that, The oblique bending structure of the first link (102) extends outward from the edge of the first connecting seat (101), and the oblique bending structure of the second link (203) extends outward from the edges of the first connecting block (201) and the second connecting block (202).

5. A flexible metal watchband based on 3D printing technology according to claim 4, characterized in that, The oblique bending structure of the adjacent first chain rod (102) and the oblique bending structure of the second chain rod (203) are movably connected to each other to form a flexible movable connection structure of the connecting belt body (1), so that the adjacent outer chain piece (100) and inner chain piece (200) can twist at any angle.

6. A flexible metal watchband based on 3D printing technology according to claim 5, characterized in that, The outer diameters of the first link (102) and the second link (203) are 0.25mm-0.7mm.

7. A flexible metal watchband based on 3D printing technology according to claim 1, characterized in that, The outer chain particles (100) are sequentially nested along the first direction, and the inner chain particles (200) are sequentially nested along the first direction and the second direction, with the outer chain particles (100) located on both sides of the inner chain particles (200) in the second direction.

8. A flexible metal watchband based on 3D printing technology according to claim 1, characterized in that, The upper side of the first connecting seat (101) with the inverted U-shaped structure is flush with the upper side of the first connecting block (201) to form an upper reference plane. The lower side of the first connecting seat (101) with the inverted U-shaped structure is flush with the lower side of the second connecting block (202) to form a lower reference plane. Both the upper and lower reference planes are composed of multiple movable and adjustable contact surfaces spliced ​​together.

9. A flexible metal watchband based on 3D printing technology according to claim 1, characterized in that, One of the connecting straps (1) integrates an adjustment area (300) for adjusting the wearing length, and the adjustment area (300) is arranged along a first direction.

10. A flexible metal watchband based on 3D printing technology according to claim 9, characterized in that, The first connecting block (201) in the adjustment area (300) has oblique openings (204) on both sides along the first direction that are adapted to the folding buckle (3). The oblique openings (204) and the folding buckle (3) cooperate to form a multi-level positioning and locking structure for adjusting the wearing length.

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