Metal watchband insulating structure
By using an insert injection molding process to create electrical isolation on the metal watch band, the problem of poor integration between insulation treatment and the overall structure in existing technologies is solved, thereby improving safety and durability and ensuring wearing comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 동관 화옌 뉴 매터리얼 테크놀로지 씨오 엘티디
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-04
AI Technical Summary
Existing insulation treatment methods for metal watch bands are difficult to integrate well with the overall structure, resulting in poor appearance and durability. Furthermore, the adhesion of rubber and plastic materials is weak, making them prone to falling off or aging, which affects service life and safety.
The main body, insulation part, and base plate are integrally formed by insert injection molding process. The intermediate body, first shell and second shell are integrally formed by insert injection molding process to build electrical isolation and block current conduction and temperature transfer. A wavy curved surface is set between the insulation part and the base plate to increase the contact area. The intermediate body builds electrical isolation between the shells.
It achieves electrical isolation of the metal watch band, avoiding current interference and temperature differences from affecting the skin, ensuring wearing safety and comfort, extending service life, and has a simple structure and is easy to use.
Smart Images

Figure CN224584308U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal watch strap insulation technology, and in particular to a metal watch strap insulation structure. Background Technology
[0002] With technological advancements, consumer demands for wearable products have expanded beyond appearance and functionality to include safety and comfort. In the realm of metal watch bands, metal has become a common material for smartwatches and other wearable devices due to its superior mechanical properties and aesthetic design. However, metal exhibits strong electrical and thermal conductivity, which can lead to discomfort with prolonged wear, especially when in contact with the skin. This can cause electrical interference or temperature conduction, impacting user experience and health.
[0003] To address this issue, some companies in the industry are attempting to add insulation to the areas where the metal comes into contact with the human body to improve wearing comfort. In existing technologies, insulation is typically achieved by covering the metal band with a layer of soft material such as rubber or plastic. However, this method often struggles to integrate well with the overall structure of the metal band, affecting its appearance and durability. In particular, rubber and plastic materials have weak adhesion, making them prone to peeling or aging, which impacts the band's lifespan and safety. Utility Model Content
[0004] Based on this, the present invention provides a metal watch strap insulation structure that is simple in structure and easy to use. The insulation part is set between the main body and the base plate, and the intermediate body is set between the first shell and the second shell. Both can form electrical isolation, block the conduction of current between metal parts, and at the same time slow down the temperature transfer, avoid current interference or temperature difference affecting the skin, and ensure wearing safety.
[0005] To achieve the objectives of this utility model, the following technical solution is adopted: A metal watchband insulation structure, comprising: A connector link for connecting to the watch case includes a body, an insulating portion attached to one side of the body, and a backing plate attached to the side of the insulating portion facing away from the body; the body is a metal body, the backing plate is a metal backing plate, and the insulating portion is a plastic insulating portion; the insulating portion is used to establish electrical isolation between the body and the backing plate; and An insulating link is hinged to the connector link on the side facing away from the watch case; the insulating link includes an intermediate body, a first shell connected to one side of the intermediate body, and a second shell connected to the other side of the intermediate body; one side of the intermediate body is detachably connected to the insulating part via a spring bar; the intermediate body is a plastic intermediate body, the first shell is a metal first shell, and the second shell is a metal second shell; the intermediate body is used to establish electrical isolation between the first shell and the second shell.
[0006] The aforementioned metal watch strap insulation structure is simple in structure and easy to use. The insulating part is located between the main body and the base plate, and the intermediate body is located between the first shell and the second shell. Both can form electrical isolation, block the conduction of current between metal parts, and at the same time slow down the temperature transfer, avoid current interference or temperature difference affecting the skin, and ensure wearing safety.
[0007] In one embodiment, the main body, the insulating part, and the bottom sheet are integrally formed by insert injection molding; the intermediate body, the first shell, and the second shell are integrally formed by insert injection molding.
[0008] In one embodiment, a bearing portion protrudes outward from one side of the main body; the insulating portion is recessed inward on the side facing the main body to form an arc-shaped mating groove, the arc-shaped contour of the mating groove matching and fitting the outer contour of the bearing portion.
[0009] In one embodiment, the top surface of the support portion is smoothly connected to the top surface of the insulation portion.
[0010] In one embodiment, the side of the insulating portion facing the substrate is provided with a wavy curved surface, and the side of the substrate facing the insulating portion is provided with a wavy curved surface, and the wavy curved surface of the insulating portion is adapted to fit and adhere to the wavy curved surface of the substrate.
[0011] In one embodiment, the intermediate body includes two embedded portions arranged in parallel and spaced apart, and a bridge connecting the two embedded portions; one end of the embedded portion is embedded in a first shell, and the other end of the embedded portion is embedded in a second shell; the bridge is sandwiched between the first shell and the second shell.
[0012] In one embodiment, the insulating part is provided with a through groove along its length; the two opposite ends of the inlaid part are respectively provided with through holes, which are used to correspond to the through groove; after the spring ear passes through the through groove, the two opposite ends of the spring ear are respectively embedded into the interior of the through hole to realize the rotational connection between the intermediate body and the insulating part.
[0013] In one embodiment, a tab extends outward from the middle of the first casing on the side opposite to the intermediate body, the tab being used to abut against the top surface of the insulating part. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of the insulating structure of a metal watch strap according to one embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional schematic diagram of the insulating structure of the metal watch band from another perspective; Figure 3 for Figure 1 An exploded view of the insulation structure of the metal watch band shown. Figure 4 for Figure 3An exploded view of the metal watchband insulation structure shown from another perspective; Figure 5 for Figure 4 An exploded view of the joint links in the insulating structure of the metal watch band shown, excluding the rubber pads; Figure 6 for Figure 5 An exploded view of the joint link in the insulating structure of the metal watch band, excluding the rubber pad; Figure 7 for Figure 4 A three-dimensional schematic diagram of the insulating links in the insulating structure of the metal watchband shown. Figure 8 for Figure 7 An exploded view of the insulating links in the insulating structure of the metal watchband shown. Figure 9 for Figure 1 The diagram shows an application of the metal watchband insulation structure.
[0015] Attached image annotations: 10-Connector link, 11-Main body, 12-Insulation part, 120-Through groove, 13-Base plate, 14-Rubber pad, 15-Bearing part, 16-Mating groove; 20-Insulating link, 21-Intermediate body, 211-Insertion, 212-Bridge, 213-Through hole, 22-First shell, 23-Second shell, 24-Protrusion. Detailed Implementation
[0016] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0017] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0019] Please see Figures 1 to 9The present invention provides a metal watch strap insulation structure comprising a connector link 10 and an insulating link 20 hinged to one side of the connector link 10. The connector link 10 is used to connect to the watch case, and the insulating link 20 is hinged to the side of the connector link 10 facing away from the watch case, forming a transition connection structure between the watch case and the skin contact end.
[0020] The connector link 10 includes a main body 11, an insulating part 12 attached to one side of the main body 11, a base plate 13 attached to the side of the insulating part 12 facing away from the main body 11, and rubber pads 14 connected to opposite ends of the side of the main body 11 facing away from the insulating part 12. The main body 11 is used to connect to the watch case, the rubber pads 14 are sandwiched between the main body 11 and the watch case to buffer direct contact between the main body 11 and the watch case, and the base plate 13 is used for direct contact with the skin of the wrist.
[0021] In this embodiment, both the main body 11 and the base plate 13 are made of metal, while the insulating part 12 is made of plastic. The main body 11, the insulating part 12, and the base plate 13 are integrally molded using an insert injection molding process. By providing the insulating part 12, electrical isolation can be established between the main body 11 and the base plate 13, achieving an insulation effect between them. This prevents current or temperature on the main body 11 from being directly conducted to the skin of the wrist, ensuring wearing safety and comfort.
[0022] like Figure 5 and Figure 6 As shown, a supporting portion 15 protrudes outward from one side of the main body 11, and the supporting portion 15 is used to mate and connect the insulating portion 12. The top surface of the supporting portion 15 smoothly connects with the top surface of the insulating portion 12, as shown. Figure 3 As shown, this ensures the continuity of the overall appearance of the connector link 10, avoiding discomfort or appearance defects caused by structural steps.
[0023] In this embodiment, the insulating part 12 is recessed inward on the side facing the main body 11 to form an arc-shaped mating groove 16. The arc-shaped contour of the mating groove 16 matches and fits the outer contour of the supporting part 15. By designing the arc-shaped mating surface, not only can the effective contact area between the insulating part 12 and the supporting part 15 be increased, but the interfacial adhesion can also be improved through the interlocking structure of the two, thereby significantly improving the connection strength between the insulating part 12 and the main body 11, effectively avoiding the problem of easy detachment of the insulating layer in the prior art.
[0024] In this embodiment, the side of the insulating part 12 facing the substrate 13 is provided with a wavy curved surface, and the side of the substrate 13 facing the insulating part 12 is also provided with a wavy curved surface, with the wavy curved surfaces of the two fitting together. By providing wavy curved surfaces, the effective contact area between the insulating part 12 and the substrate 13 can be further increased, and the interfacial adhesion between the two can be improved through the curved surface fitting effect, thereby further strengthening the connection stability between the insulating part 12 and the substrate 13 and extending the overall service life of the structure.
[0025] In this embodiment, the insulating part 12 is provided with a through groove 120 along its length direction, and the through groove 120 is used to position and connect the insulating link 20.
[0026] The insulating link 20 includes an intermediate body 21, a first shell 22 connected to one side of the intermediate body 21, and a second shell 23 connected to the other side of the intermediate body 21. One side of the intermediate body 21 is detachably connected to the insulating part 12 via a spring ear, thereby enabling a rotatable connection between the insulating link 20 and the connector link 10.
[0027] In this embodiment, the intermediate body 21 is made of plastic; the first shell 22 and the second shell 23 are both made of metal; the intermediate body 21, the first shell 22, and the second shell 23 are integrally formed by insert injection molding. By setting the intermediate body 21, electrical isolation can be established between the first shell 22 and the second shell 23, achieving insulation between them and preventing current and temperature on the first shell 22 or the second shell 23 from being conducted to the skin of the wrist, further enhancing the overall insulation effect.
[0028] In other words, the metal watchband insulation structure of this utility model, such as Figure 9 As shown, through the insulation design at the two positions of connector link 10 and insulating link 20, complete electrical isolation can be built between the skin contact end of the watch case and the watch strap, achieving the insulation effect between the watch case and the skin contact end, completely avoiding the risk of current or temperature being conducted to the skin of the wrist, and maximizing the protection of wearing safety and comfort.
[0029] like Figure 7 and Figure 8 As shown, the intermediate body 21 includes two embedded portions 211 arranged in parallel intervals, and a connecting bridge 212 connecting the two embedded portions 211. One end of the embedded portion 211 is embedded in the first shell 22, and the other end of the embedded portion 211 is embedded in the second shell 23. The connecting bridge 212 is sandwiched between the first shell 22 and the second shell 23, which not only realizes the structural connection of the two embedded portions 211, but also further prevents direct contact between the first shell 22 and the second shell 23.
[0030] Specifically, the two opposite ends of the embedded part 211 are respectively provided with through holes 213, which are used to correspond to the through slot 120. During assembly, after the spring bar passes through the through slot 120, the two opposite ends of the spring bar are respectively embedded into the interior of the through holes 213. The axial positioning of the spring bar realizes the rotational connection between the intermediate body 12 and the insulating part 12, so that the insulating link 20 can be flexibly bent relative to the connector link 10 to adapt to wearing requirements. Please refer again. Figure 9 The two through holes 213 located in the embedded part 211 away from the connector link 10 can be used to continue connecting other links, such as the same type of insulated link 20 in this embodiment, or conventional metal links. They can be flexibly matched according to the length and functional requirements of the actual product to improve the structural applicability.
[0031] Furthermore, a protrusion 24 extends outward from the middle of the first casing 22 on the side opposite to the intermediate body 21. The protrusion 24 is used to abut against the top surface of the insulating part 12, thereby limiting the reverse bending angle of the insulating link 20, avoiding damage to the spring ear or through groove 120 due to excessive bending, and ensuring the reliability of the structural connection.
[0032] The above-mentioned metal watch strap insulation structure is simple in structure and easy to use. The insulating part 12 is located between the main body 11 and the base plate 13, and the intermediate body 21 is located between the first shell 22 and the second shell 23. Both can form electrical isolation, block the conduction of current between metal parts, and at the same time slow down the temperature transfer, avoid current interference or temperature difference affecting the skin, and ensure wearing safety.
[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A metal watch strap insulation structure, characterized in that, include: The connector link for connecting the watch case includes a main body, an insulating part attached to one side of the main body, and a backing plate attached to the side of the insulating part facing away from the main body. The main body is made of metal, the substrate is made of metal, and the insulating part is made of plastic; the insulating part is used to create electrical isolation between the main body and the substrate. An insulating link is hinged to the connector link on the side facing away from the watch case; the insulating link includes an intermediate body, a first shell connected to one side of the intermediate body, and a second shell connected to the other side of the intermediate body; one side of the intermediate body is detachably connected to the insulating part via a spring bar; the intermediate body is a plastic intermediate body, the first shell is a metal first shell, and the second shell is a metal second shell; The intermediate is used to create electrical isolation between the first and second cladding.
2. The metal watch strap insulation structure according to claim 1, characterized in that, The main body, insulation part and bottom sheet are integrally formed by insert injection molding process; the intermediate body, first shell and second shell are integrally formed by insert injection molding process.
3. The metal watch strap insulation structure according to claim 1, characterized in that, One side of the main body has a bearing part that protrudes outward; the side of the insulating part facing the main body is recessed inward to form an arc-shaped mating groove, and the arc-shaped contour of the mating groove matches and fits the outer contour of the bearing part.
4. The metal watch strap insulation structure according to claim 3, characterized in that, The top surface of the load-bearing part and the top surface of the insulating part are smoothly connected.
5. The metal watch strap insulation structure according to claim 1, characterized in that, The insulating part has a wavy curved surface facing the film, and the film has a wavy curved surface facing the insulating part. The wavy curved surface of the insulating part is adapted to fit the wavy curved surface of the film.
6. The metal watch strap insulation structure according to claim 1, characterized in that, The intermediate body includes two embedded parts arranged in parallel and spaced apart, and a bridge connecting the two embedded parts; one end of the embedded part is embedded in the first shell, and the other end of the embedded part is embedded in the second shell; the bridge is sandwiched between the first shell and the second shell.
7. The metal watch strap insulation structure according to claim 6, characterized in that, The insulating part has a through groove along its length; the two opposite ends of the embedded part are respectively provided with through holes, which are used to correspond to the through groove; after the spring ear passes through the through groove, the two opposite ends of the spring ear are respectively embedded into the interior of the through hole to realize the rotational connection between the intermediate body and the insulating part.
8. The metal watch strap insulation structure according to claim 1, characterized in that, A tab extends outward from the middle of the first casing on the side opposite to the intermediate body. The tab is used to abut against the top surface of the insulating part.