Microphone device, watch and electronic device

Abstract

The application provides a microphone device, a watch and an electronic device. The microphone device comprises a microphone unit, a waterproof and breathable film layer, a silica gel assembly and a mounting assembly. The mounting assembly has a bottom wall and a side wall. The bottom wall is provided with a sound hole. The side wall is open at the upper end. The microphone unit is arranged in the mounting assembly. The waterproof and breathable film layer is arranged on the side of the microphone unit facing the bottom wall and covers the sound hole. The silica gel assembly is filled between the side wall and the microphone unit and covers the open upper end to seal the top of the microphone unit. Based on the embodiment of the application, the sealing performance of the microphone device is improved while the cost of the microphone device is reduced.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more specifically, to a microphone device, a watch, and an electronic device. Background Technology

[0002] With the continuous development of electronic devices, microphones, as an important input tool, have become essential equipment in various fields such as education, design, and office work. Microphones are typically assembled from multiple independently machined metal or plastic parts, requiring complex sealing structures between these components. This approach demands high precision in component machining and assembly tolerances, leading to higher overall costs. Furthermore, the assembly gaps between microphone units are difficult to completely seal, easily creating unintended airflow channels. This results in insufficient acoustic duct sealing, significant external airflow interference or sound leakage, thus affecting sound reception. Therefore, improving the sealing performance of microphones while reducing their cost is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] This application provides a microphone device, a watch, and an electronic device, which aims to improve the sealing of the microphone device while reducing its cost.

[0004] In a first aspect, a microphone device is provided, comprising a microphone unit, a waterproof and breathable membrane layer, a silicone component, and a mounting component. The mounting component has a bottom wall and a side wall, the bottom wall having a sound hole, and the side wall forming an upper opening. The microphone unit is disposed within the mounting component. The waterproof and breathable membrane layer is disposed on the side of the microphone unit facing the bottom wall and covers the sound hole. The silicone component fills the space between the side wall and the microphone unit and covers the upper opening to seal the top of the microphone unit.

[0005] The technical solution of this application embodiment achieves a complete seal on the top of the microphone unit by filling the space between the side wall of the mounting assembly and the microphone unit with a silicone component, covering the upper opening. After curing, the silicone component can adaptively fill the assembly gap, eliminating the need for high-precision mechanical fitting or additional sealing rings, brackets, and other parts. This significantly reduces the number of components and assembly complexity, lowering the overall manufacturing cost while ensuring a sealed acoustic duct, preventing sound leakage and airflow interference. Therefore, this microphone device optimizes costs while improving sealing and sound pickup performance.

[0006] Optionally, the silicone assembly is formed by pouring liquid silicone into the mounting assembly, filling the space between the sidewall of the mounting assembly and the microphone unit, and covering the upper opening, followed by curing; or, the silicone assembly is formed by injecting liquid silicone into the mounting assembly and then curing it.

[0007] In some possible implementations, the silicone assembly includes a connected body portion and an extension portion, the body portion covering the upper opening, and the extension portion abutting against the side wall of the mounting assembly and the outer wall of the microphone unit.

[0008] Through the technical solution of this application embodiment, the silicone component can adaptively fill the assembly gap after curing, eliminating the need for high-precision mechanical fitting or additional sealing rings, brackets, and other parts. This significantly reduces the number of components and assembly complexity, thereby lowering the overall manufacturing cost while ensuring the acoustic duct is sealed and preventing sound leakage and airflow interference. Therefore, this microphone device achieves cost optimization while improving sealing and sound pickup performance.

[0009] In some possible implementations, the microphone unit has a terminal on the side facing away from the waterproof and breathable membrane layer, and the main body includes a first through hole, through which the wiring for the terminal connection is electrically connected to the motherboard assembly.

[0010] The technical solution of this application embodiment involves terminals positioned at the top of the microphone unit (away from the opening direction). These terminals, in conjunction with a first through-hole on the silicone component body, allow the wiring to pass through this through-hole in a concentrated manner. This prevents the wiring from being scattered within the mounting assembly or interfering with the sidewalls or the silicone component, thus improving assembly reliability. The first through-hole is directly formed on the silicone component body covering the upper opening, eliminating the need for additional wiring holes or sealing plugs. The silicone component wraps around the wiring during curing while maintaining a seal on the top of the microphone unit, reducing the number of parts and lowering costs. After passing through the first through-hole, the wiring can be directly connected to an external motherboard (such as a watch motherboard), resulting in a short path, low signal loss, and the through-hole provides positioning and constraint for the wiring, facilitating automated soldering or insertion.

[0011] Optionally, the inner wall of the first through hole and the trace are sealed with a silicone component.

[0012] Optionally, the terminal is a metal pad, the trace is a flexible flat cable, the flexible flat cable passes through the first through hole and is soldered to the motherboard assembly, and the inner wall of the first through hole and the flexible flat cable are filled and sealed by the shrinkage gap formed when the silicone assembly is cured.

[0013] In some possible implementations, the microphone device further includes a protective housing, within which at least a portion of the microphone unit and at least a portion of the waterproof and breathable membrane layer are disposed.

[0014] By using the technical solution of this application embodiment, the microphone unit and the waterproof and breathable membrane layer are at least partially housed in the protective shell, which can improve the structural strength and impact resistance of the microphone device, facilitate modular assembly, reduce lateral airflow interference, further ensure the acoustic sealing effect, and at the same time assist the silicone components to achieve reliable filling and vibration reduction.

[0015] In some possible implementations, the protective housing has a second through-hole located on the side of the protective housing facing the waterproof and breathable membrane layer.

[0016] By providing a second through hole on the side of the protective housing facing the waterproof and breathable membrane layer, the technical solution of this application ensures the smooth transmission of sound waves from the sound hole to the microphone unit, achieves air pressure balance, facilitates silicone injection and venting, and helps with assembly alignment, thus maintaining good sound reception performance while improving sealing.

[0017] In some possible implementations, the protective housing has a third through hole, with the second through hole and the third through hole being disposed opposite each other, and the sidewall of the microphone unit being opposite to the inner wall of the protective housing. On a plane perpendicular to the axial direction of the microphone unit, the orthographic projection of the second through hole is within the range of the orthographic projection of the third through hole.

[0018] By providing a smooth path for the flow and filling of liquid silicone through the technical solution of this application embodiment, and by setting opposite second and third through holes on the protective housing, and making the orthographic projection of the second through hole fall within the orthographic projection range of the third through hole, air bubbles are avoided. At the same time, it is beneficial to air pressure balance and assembly positioning, thereby further improving the sound reception performance and manufacturing yield while ensuring sealing.

[0019] In some possible implementations, the silicone component fills the sidewalls of the mounting component and the protective housing, and covers the third through hole.

[0020] By filling the space between the sidewall of the mounting component and the protective housing with a silicone component and covering the third through hole, the opening of the protective housing is sealed. Combined with the top sealing structure, a complete airtight barrier is formed, which effectively prevents sound leakage and impurities from entering. At the same time, the silicone component can fix the protective housing and absorb vibration, simplifying the sealing and assembly process, and further reducing costs while improving the sound reception quality.

[0021] In some possible implementations, the microphone device also includes a fixing member, one end of which is fixedly connected to the mounting assembly, and the other end of which is fixedly connected to a component adjacent to the mounting assembly.

[0022] By adding a fixing component, the mounting components can be reliably connected to the external adjacent components, thus achieving rapid positioning and stable installation of the microphone device, which facilitates assembly and maintenance. At the same time, the fixing component can absorb external vibrations, reduce noise transmission, ensure the accuracy of sound hole alignment, and improve the impact resistance and long-term reliability of the microphone device in complex internal environments.

[0023] In some possible implementations, the sidewall of the mounting component is provided with a protrusion that engages with a fastener.

[0024] The technical solution of this application embodiment enables rapid assembly by setting a protrusion on the side wall of the mounting component and snapping it with the fastener, which simplifies the assembly process and reduces the cost of parts and labor. At the same time, the snap-fit ​​structure provides reliable fixing force, facilitates disassembly and maintenance, and is conducive to the stable installation of the microphone device in a confined space.

[0025] In some possible implementations, the fastener is fixedly connected to the component adjacent to the mounting assembly by bolts.

[0026] The technical solution of this application embodiment achieves high-strength detachable fixing by using bolts to fix the fasteners to adjacent components, ensuring the positional stability of the microphone device during long-term use or impact; at the same time, the bolt connection facilitates assembly and maintenance, adapts to different materials and thicknesses, and helps improve production efficiency and product reliability.

[0027] In some possible implementations, the fastener is provided with a fourth through hole, through which the terminal connection traces pass to the first and fourth through holes and are electrically connected to the motherboard in the microphone device.

[0028] By providing a fourth through hole on the fixing member, the wiring passes through the first through hole and the fourth through hole in sequence and then connects to the motherboard. This achieves orderly guidance and double fixing of the wiring, reduces stress concentration and assembly interference, ensures continuous sealing, shortens the wiring length, and helps improve the reliability of electrical connections and the tensile and dustproof performance of the device.

[0029] Secondly, a watch is provided that includes the microphone device described in the first aspect above.

[0030] In some possible implementations, the watch also includes a base plate, a mid-frame assembly, and a display assembly. The mounting assembly is disposed on the base plate, which is connected to the mid-frame assembly. The display assembly is disposed on the mid-frame assembly and is used to display and control the watch.

[0031] In some possible implementations, the watch also includes a motherboard assembly and a battery assembly, which are disposed between the base plate and the mounting assembly. The microphone unit has terminals on the side facing away from the waterproof and breathable membrane layer, and the wiring connected to the terminals is electrically connected to the motherboard assembly and / or the battery assembly.

[0032] Thirdly, an electronic device is provided, which includes a microphone device as in the first aspect, or a watch as in the second aspect. Attached Figure Description

[0033] Figure 1 An exploded view of a microphone device to which an embodiment of this application applies is shown.

[0034] Figure 2 A partial structural schematic diagram of a microphone device provided in an embodiment of this application is shown.

[0035] Figure 3 A partial structural schematic diagram of another microphone device provided in an embodiment of this application is shown. Detailed Implementation

[0036] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0037] To keep the drawings concise, the figures in this application only schematically show the parts related to the corresponding embodiments, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, some figures only schematically show some structures or components, and there may actually be more or fewer identical or similar structures or components.

[0038] The business scenarios described in the embodiments of this application are for illustrative purposes only and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0039] In this application, unless otherwise expressly specified and limited, "connection" includes direct or indirect connection between objects: the connected objects may be directly connected through a medium (e.g., wires, wiring, etc.), or indirectly connected through other elements, or may be an internal connection.

[0040] In this application, unless otherwise expressly specified and limited, ordinal numbers, such as "first," "second," etc., are used only to distinguish the objects being described and should not be construed as indicating or implying the relative importance or order between the objects being described. Furthermore, ordinal numbers do not represent the quantity of the objects being described. "Multiple" includes two or more, and other quantifiers are similar. "Or," "and / or," etc., are used to describe the relationship between objects, indicating a non-exclusive inclusion. For example, "A and / or B," "A or B" can include: "A alone," "B alone," or "A and B." Similarly, "A, B, and / or C," "A, B, or C" can include: "A alone," "B alone," "C alone," "A and B," "A and C," "B and C," or "A, B, and C." Additionally, the " / " in this application is used to indicate an "or" relationship between preceding and following objects. The meaning of "one or more of A and B" or "at least one of A and B" in this application is the same as the meaning of "A and / or B" or "A or B" above. "One or more of A, B and C" or "at least one of A, B and C" has the same meaning as "A, B and / or C" or "A, B or C" above.

[0041] This application relates to the field of electronic technology, specifically to a micro microphone device 10, particularly a pickup component used in portable electronic devices such as smartwatches and headphones. Micromicrophones are typically assembled from multiple independently manufactured parts. These parts typically include a metal or plastic housing, a bracket for securing the microphone unit 11, individual sealing rings (such as rubber rings or foam), a waterproof and breathable membrane layer 12, and a sheath for the lead wires. These parts are manufactured using different molds or processes and then assembled sequentially by manual or automated equipment. This multi-part assembly structure presents the following problems: The selection of components is complex, resulting in a high overall cost. Each part (housing, bracket, sealing ring, diaphragm fixing component 17, etc.) requires individual molding or machining, and has high requirements for dimensional tolerances (e.g., the interference fit between the sealing ring and the housing needs precise control), leading to a significant increase in mold costs, material costs, and assembly time. In particular, to ensure the positioning accuracy and sealing effect of the microphone unit 11, high-precision metal inserts or custom-shaped silicone sealing rings are often required, further increasing the bill of materials cost. At the same time, inventory management and incoming material inspection of multiple parts also increase production management costs.

[0042] An unsealed airflow path leads to poor sound pickup. Typically, the microphone unit 11 and its housing, as well as the waterproof and breathable membrane layer 12 and its housing, are sealed using mechanical clamping or adhesive application. However, due to component tolerances and assembly errors, tiny gaps or pores can easily form around the acoustic path after assembly. These gaps allow external airflow (such as wind or exhalation) to directly enter the microphone unit 11, generating wind noise or low-frequency disturbances and reducing the signal-to-noise ratio. Sound leakage weakens the sound pressure that should pass through the sound holes, decreasing pickup sensitivity. In multi-microphone arrays (such as noise-canceling microphones), an unsealed airflow path can disrupt the phase consistency between microphones, causing noise reduction algorithms to fail.

[0043] In summary, how to simplify the component structure, reduce manufacturing costs, and achieve reliable sealing while ensuring the acoustic performance of the microphone device 10 is a technical problem that urgently needs to be solved in this field.

[0044] Figure 1 An exploded schematic diagram of a microphone device 10 applicable to an embodiment of this application is shown. Figure 2 A partial structural schematic diagram of a microphone device 10 provided in an embodiment of this application is shown.

[0045] like Figure 1 and Figure 2As shown, this application embodiment provides a microphone device 10, which includes a microphone unit 11, a waterproof and breathable membrane layer 12, a silicone component 13, and a mounting component 14. The mounting component 14 has a bottom wall 140 and a side wall 141. The bottom wall 140 of the mounting component 14 is provided with a sound hole, and the side wall 141 of the mounting component 14 forms an upper opening 142. The microphone unit 11 is disposed inside the mounting component 14. The waterproof and breathable membrane layer 12 is disposed on the side of the microphone unit 11 facing the bottom wall 140 of the mounting component 14 and covers the sound hole. The silicone component 13 fills the space between the side wall 141 of the mounting component 14 and the microphone unit 11 and covers the upper opening 142 to seal the top of the microphone unit 11.

[0046] The mounting assembly 14 has a bottom wall 140 and side walls 141. The bottom wall 140 of the mounting assembly 14 has sound holes, and the side walls 141 form an upper opening 142. Taking the mounting assembly 14 as a column as an example, the mounting assembly 14 has an overall cup-shaped or cylindrical structure. Its bottom is a closed bottom wall 140, and one or more sound holes are opened in the center or at an appropriate position on the bottom wall 140 to allow external sound to enter. The side walls 141 of the mounting assembly 14 extend upwards from the edge of the bottom wall 140. The side walls 141 are annular cylindrical surfaces, and the top of the side walls 141 does not have a top wall but forms a completely open opening, namely the upper opening 142 described above. This opening facilitates the placement of components such as the microphone unit 11 and the waterproof and breathable membrane layer 12 inside the mounting assembly 14.

[0047] The microphone unit 11 is a cylinder (e.g., cylindrical or prismatic) with an outer diameter slightly smaller than the inner diameter of the sidewall 141 of the mounting assembly 14, so as to fit inside the mounting assembly 14. The microphone unit 11 has two opposite ends: one end facing the bottom wall 140 of the mounting assembly 14 (lower surface) and the other end away from the opening (upper surface). An acoustic diaphragm is provided near the lower surface of the microphone unit 11 for receiving sound.

[0048] The waterproof and breathable membrane layer 12 can be a circular sheet with the same diameter as the lower surface diameter of the microphone unit 11, or it can be slightly larger than the lower surface of the microphone unit 11. The waterproof and breathable membrane layer 12 is disposed on the side of the microphone unit 11 facing the bottom wall 140 (i.e., between the lower surface and the bottom wall 140) and covers the sound holes on the bottom wall 140. The waterproof and breathable membrane layer 12 can be adhered to or pressed onto the lower surface of the microphone unit 11, or it can be placed independently.

[0049] The silicone component 13 is formed by pouring liquid silicone and then curing it. The silicone component 13 fills the annular gap between the side wall 141 of the mounting component 14 and the outer wall of the microphone unit 11, and covers the upper opening 142. That is, after curing, the silicone component 13 forms a closed top cover, completely sealing the upper surface of the microphone unit 11 inside the mounting component 14.

[0050] It should be understood that the shapes of the microphone unit 11 and the mounting assembly 14 are not limited to cylinders. The microphone unit 11 can be a prism, elliptical cylinder, or irregular shape, as long as it can be placed inside the mounting assembly 14. The internal cavity shape of the mounting assembly 14 matches the external shape of the microphone unit 11 to ensure that there is a uniform gap between them for silicone filling, and this application does not impose any limitations on this.

[0051] In this embodiment, the mounting assembly 14 serves as the supporting housing for the microphone device 10 and can be integrally injection molded or machined from a rigid material (such as plastic or metal). The height of its sidewall 141 is greater than the height of the microphone unit 11, so that when the microphone unit 11 is fully inserted, its top is lower than the top of the sidewall 141, thus reserving space for the coverage of the upper opening 142. The inner surface of the sidewall 141 should be smooth to reduce resistance during silicone injection.

[0052] The microphone unit 11 can be a miniature microphone (MEMS or electret type), and is cylindrical in shape. The central area of ​​the lower surface of the microphone unit 11 is the acoustic sensing area. The upper surface of the microphone unit 11 is provided with terminals 132 (such as solder pads) for electrical connection.

[0053] The waterproof and breathable membrane layer 12 can be made of expanded polytetrafluoroethylene (ePTFE) or other films with sound-permeable, waterproof, and dustproof functions. The waterproof and breathable membrane layer 12 can be fixed to the lower surface of the microphone unit 11 by double-sided adhesive rings or ultrasonic welding. After the microphone unit 11 is installed in the mounting assembly 14, a small gap can be left between the membrane layer and the bottom wall 140, or it can slightly abut against the bottom wall 140, as long as it does not block the sound holes.

[0054] The silicone component 13 is an in-situ cured molding part. During assembly, the microphone unit 11 (with the waterproof and breathable membrane layer 12 attached) is first placed into the mounting component 14, with its lower surface facing the bottom wall 140 of the mounting component 14, and the microphone unit 11 is kept concentric with the side wall 141. Then, liquid silicone (such as room temperature vulcanizing silicone or thermosetting silicone) is poured in from above. The silicone flows into the gap between the side wall 141 of the mounting component 14 and the microphone unit 11, and gradually rises to cover the upper opening 142. After the silicone cures, it forms a whole: the part filling the gap is called the filling part, and the flat part covering the upper opening 142 is called the capping part. The capping part completely seals the top of the microphone unit 11, preventing external dust and moisture from entering from above, and at the same time firmly fixing the microphone unit 11 in the mounting component 14.

[0055] By employing the technical solution of this application embodiment, a complete seal is achieved on the top of the microphone unit 11 by filling the space between the side wall 141 of the mounting assembly 14 and the microphone unit 11 with a silicone component 13, covering the upper opening 142. After curing, the silicone component 13 can adaptively fill the assembly gap, eliminating the need for high-precision mechanical fitting or additional sealing rings, brackets, and other parts. This significantly reduces the number of components and assembly complexity, lowering the overall manufacturing cost while ensuring a sealed acoustic duct and preventing sound leakage and airflow interference. Therefore, this microphone device 10 achieves cost optimization while improving sealing and sound reception.

[0056] Optionally, the silicone component 13 is formed by pouring liquid silicone into the mounting component 14, filling the space between the sidewall 141 of the mounting component 14 and the microphone unit 11, and covering the upper opening 142, and then curing it; or, the silicone component 13 is obtained by injecting liquid silicone into the mounting component 14 and curing it.

[0057] Figure 3 A cross-sectional schematic diagram of a microphone device 10 provided in an embodiment of this application is shown.

[0058] In some possible implementations, such as Figures 1 to 3 As shown, the silicone assembly 13 includes a connected main body 130 and an extension 131. The main body 130 covers the upper opening 142, and the extension 131 abuts against the side wall 141 of the mounting assembly 14 and the outer wall of the microphone unit 11.

[0059] The silicone component 13 is formed by in-situ curing of liquid silicone inside the mounting component 14, and specifically includes two connected parts: the main body 130 and the extension 131.

[0060] The main body 130 is located on top of the silicone assembly 13 and is in the shape of a flat disc (when the mounting assembly 14 and the microphone unit 11 are cylindrical). Its diameter can be equal to or slightly larger than the outer diameter of the sidewall of the mounting assembly 14. The main body 130 covers the entire upper opening 142, that is, the lower surface of the main body 130 contacts or is tightly fitted with the upper surface of the microphone unit 11 and the top surface of the sidewall of the mounting assembly 14, ensuring mechanical strength and sealing.

[0061] The extension 131 extends downward from the lower surface edge or near the edge of the main body 130, forming an annular cylindrical or segmented columnar structure. The inner surface of the extension 131 abuts against the outer wall of the microphone unit 11, and the outer surface of the extension 131 abuts against the side wall 141 of the mounting assembly 14. In other words, the extension 131 fills the annular gap between the side wall 141 of the mounting assembly 14 and the microphone unit 11, and its inner and outer sides are in direct contact with the outer wall of the microphone unit 11 and the side wall 141 of the mounting assembly 14, respectively.

[0062] Here, "close" means that after curing, there is no obvious gap between the extension 131 and the surface of the adjacent component, that is, the two are in contact and a slight pre-tightening force may be applied. Because the silicone material has a certain degree of elasticity, even if there are small dimensional tolerances in the outer wall of the microphone unit 11 or the side wall of the mounting assembly 14, the extension 131 can completely fit through its own deformation to achieve surface contact sealing.

[0063] In one manufacturing method, the microphone unit 11 and the waterproof and breathable membrane layer 12 are assembled first, and then liquid silicone is poured in from above. The silicone first flows into the gap between the side wall 141 of the mounting assembly 14 and the microphone unit 11, forming the precursor of the extension 131; pouring continues until the silicone liquid completely submerges the upper surface of the microphone unit 11 and extends beyond the top of the side wall, forming a liquid layer covering the upper opening 142. After curing, the upper liquid layer becomes the main body 130, and the silicone in the gap becomes the extension 131. The two are naturally fused at the joint without a interface.

[0064] When the microphone unit 11 is a cuboid, the inner cavity of the mounting assembly 14 is rectangular, the main body 130 of the silicone assembly 13 is rectangular plate-shaped, and the extension 131 consists of four side plates (or continuous rectangular rings) surrounding the microphone unit 11, which also abut against the side wall and the outer wall of the microphone unit 11 respectively.

[0065] When the microphone unit 11 is an elliptical cylinder, the extension 131 is an elliptical ring cylinder.

[0066] Through the technical solution of this application embodiment, the silicone component 13 can adaptively fill the assembly gap after curing, eliminating the need for high-precision mechanical fitting or additional sealing rings, brackets, and other parts. This significantly reduces the number of components and assembly complexity, thereby lowering the overall manufacturing cost while ensuring the acoustic duct is sealed and preventing sound leakage and airflow interference. Therefore, this microphone device 10 achieves cost optimization while improving sealing and sound reception.

[0067] In some possible implementations, such as Figures 1 to 3 As shown, the microphone unit 11 has a terminal 132 on the side facing away from the waterproof and breathable membrane layer 12, and the main body 130 includes a first through hole 133. The wiring connected to the terminal 132 is electrically connected to the main board assembly 15 through the first through hole 133.

[0068] The microphone unit 11, taking a columnar structure as an example, has an acoustic sensing surface on the side facing the waterproof and breathable membrane layer 12 (lower surface), while the side facing away from the waterproof and breathable membrane layer 12 (upper surface) is used to arrange terminals 132. For example, the upper surface of the microphone unit 11 may be provided with two or four metal pads (referred to as terminals 132) for outputting audio signals and receiving bias voltages. These terminals 132 can be gold-plated or tin-plated planar pads, or they can be springs or contacts. The terminals 132 are electrically connected to the internal chip through the lead frame inside the microphone unit 11.

[0069] The main body 130 of the silicone component 13 covers the upper opening 142 of the mounting component 14, and one or more first through holes 133 are formed at the positions corresponding to the terminals 132 of the microphone unit 11. Specifically, the first through hole 133 is a round or square hole that penetrates the thickness direction of the main body 130, and the hole diameter is determined according to the wiring type. For example, when a flexible circuit board is used as the wiring, the through hole can be designed as a rectangular slot with a size slightly larger than the width of the flexible circuit board; when enameled wire or coaxial cable is used, the through hole can be a round hole.

[0070] The number of first through holes 133 matches the number of terminals 132, and multiple traces can also share a larger through hole for multiple traces to pass through together.

[0071] During the process of pouring liquid silicone to form the main body 130, the first through hole 133 can be formed by pre-placing ejector pins in the mold or by drilling afterward. Alternatively, the silicone can be poured and cured first, followed by laser or mechanical drilling; or an upper mold with columnar protrusions can be used to form the through hole before the silicone is fully cured.

[0072] The trace connected to terminal 132 can be a flexible printed circuit board, ribbon cable, or a single insulated wire. One end of the trace is soldered or crimped to terminal 132 on the upper surface of microphone unit 11, and then passes upward through the first through hole 133, leaving the main body 130 of silicone assembly 13, and finally electrically connected to the motherboard assembly 15 in electronic device (e.g., the main circuit board of a watch).

[0073] To ensure a tight seal, after the trace passes through the first through-hole 133, sealant can be filled into the gap between the inner wall of the first through-hole 133 and the trace. Alternatively, the elasticity of the silicone component 13 can be utilized to make the through-hole size smaller than the trace cross-section, achieving an interference seal. Another method is to position the trace at the through-hole position before injecting silicone; after the silicone cures, it naturally wraps around the trace, eliminating the need for additional sealing.

[0074] Through the technical solution of this application embodiment, the terminal 132 is disposed on the top of the microphone unit 11 (away from the opening direction), and cooperates with the first through hole 133 on the main body 130 of the silicone assembly 13, so that the wiring connecting the terminal 132 can pass through the first through hole 133 in a concentrated manner, avoiding the wiring from being scattered inside the mounting assembly 14 or interfering with the side wall or the silicone assembly 13, thereby improving assembly reliability. The first through hole 133 is directly opened on the silicone main body 130 covering the upper opening 142, without the need for additional wiring holes or sealing plugs; the silicone assembly 13 wraps the wiring during curing, while maintaining a seal on the top of the microphone unit 11, reducing the number of parts and lowering costs. After the wiring passes through the first through hole 133, it can be directly connected to an external motherboard (such as a watch motherboard), with a short path, low signal loss, and the through hole plays a role in positioning and constraining the wiring, which is conducive to automated soldering or insertion.

[0075] Optionally, the inner wall of the first through hole 133 is sealed with silicone assembly 13 between itself and the wiring.

[0076] Optionally, terminal 132 is a metal pad, and the trace is a flexible flat cable. The flexible flat cable passes through the first through hole 133 and is soldered to the main board assembly 15. The space between the inner wall of the first through hole 133 and the flexible flat cable is filled and sealed by the shrinkage gap formed when the silicone assembly 13 is cured.

[0077] In some possible implementations, such as Figures 1 to 3 As shown, the microphone device 10 also includes a protective housing 16, in which at least a portion of the microphone unit 11 and at least a portion of the waterproof and breathable membrane layer 12 are disposed.

[0078] The protective housing 16 may be made of a rigid material (such as metal, plastic or composite material) and has an internal receiving cavity. During assembly, at least a portion of the microphone unit 11 (e.g., the sidewalls and lower surface periphery of the microphone unit 11) and at least a portion of the waterproof and breathable membrane layer 12 (e.g., the edge of the membrane layer) are disposed within the protective housing 16.

[0079] Specifically, the protective housing 16 can be designed as a cup-shaped or ring-shaped structure. The microphone unit 11 is inserted into the protective housing 16 from above, and the waterproof and breathable membrane layer 12 is sandwiched between the lower surface of the microphone unit 11 and the inner bottom wall of the protective housing 16. The protective housing 16 provides physical protection for the microphone unit 11 and the waterproof and breathable membrane layer 12, preventing them from being squeezed or bumped during glue injection or subsequent use.

[0080] By using the technical solution of this application embodiment, the microphone unit 11 and the waterproof and breathable membrane layer 12 are at least partially housed in the protective housing 16, which can improve the structural strength and impact resistance of the microphone device 10, facilitate modular assembly, reduce lateral airflow interference, further ensure the acoustic sealing effect, and at the same time assist the silicone component 13 in achieving reliable filling and vibration reduction.

[0081] In some possible implementations, such as Figures 1 to 3 As shown, the protective housing 16 has a second through hole 134, which is located on the side of the protective housing 16 facing the waterproof and breathable membrane layer 12.

[0082] Based on the above embodiments, in order to ensure that sound waves are transmitted smoothly from the bottom wall 140 sound hole of the mounting assembly 14 to the microphone unit 11, and to achieve air pressure balance, facilitate silicone injection and venting, and align the assembly, the protective housing 16 has a second through hole 134. The second through hole 134 is provided on the side of the protective housing 16 facing the waterproof and breathable membrane layer 12, that is, the bottom wall of the protective housing 16 or the side wall area of ​​the protective housing 16 near the bottom wall.

[0083] Specifically, when the protective housing 16 is cup-shaped, one or more second through holes 134 are formed in the central region of its bottom wall. The position of the second through holes 134 can be aligned with the sound holes on the bottom wall 140 of the mounting assembly 14. A waterproof and breathable membrane layer 12 covers the second through holes 134, so that external sound passes sequentially through the sound holes, the second through holes 134, and the waterproof and breathable membrane layer 12 before reaching the microphone unit 11.

[0084] It should be understood that "above" and "below" here are defined along the axial direction (i.e., the height direction) of the microphone unit 11 with reference to the bottom wall of the protective housing 16. Generally, the direction closer to the top of the microphone unit 11 (terminal 132 side) is called "above," and the direction closer to the bottom wall 140 (sound hole side) of the mounting assembly 14 is called "below." Therefore, the bottom wall of the protective housing 16 is located in the lower part of the entire structure, and the microphone unit 11 is located in the upper part.

[0085] Method 1: The membrane layer is located above the second through hole 134.

[0086] A waterproof and breathable membrane layer 12 is attached to the lower surface (facing the bottom wall) of the microphone unit 11. When the microphone unit 11 is installed into the protective housing 16, a small gap (e.g., 0.05 mm to 0.2 mm) is left between the lower surface of the microphone unit 11 and the inner surface of the bottom wall of the protective housing 16, or the waterproof and breathable membrane layer 12 is in direct contact with the inner surface of the bottom wall. At this time, the second through hole 134 is located on the bottom wall of the protective housing 16, and the membrane layer is located above the second through hole 134, that is, the membrane layer is inside the protective housing 16, closer to the microphone unit 11.

[0087] At this time, the sound wave path is: external sound - bottom wall acoustic hole of mounting component 14 - second through hole 134 of protective housing 16 - upward after passing through the second through hole 134 - waterproof and breathable membrane layer 12 - acoustic sensing area on the lower surface of microphone unit 11.

[0088] In this method, the waterproof and breathable membrane layer 12 is protected inside the protective housing 16 to avoid being scratched during assembly or glue application; at the same time, the membrane layer is close to the diaphragm of the microphone unit 11, resulting in good acoustic response.

[0089] Method 2: The membrane layer is located below the second through hole 134.

[0090] A waterproof and breathable membrane layer 12 is attached to the outer surface of the bottom wall of the protective housing 16, specifically the side of the bottom wall facing the bottom wall 140 of the mounting assembly 14. At this point, the membrane layer is located below the second through-hole 134. The lower surface of the microphone unit 11 can directly contact the inner surface of the bottom wall of the protective housing 16, or be separated by a gasket.

[0091] At this time, the sound wave path is: external sound - bottom wall sound hole of mounting component 14 - waterproof and breathable membrane layer 12 - second through hole 134 - internal cavity of protective housing 16 - lower surface of microphone unit 11.

[0092] In this method, the waterproof and breathable membrane layer 12 is sandwiched between the bottom wall of the mounting component 14 and the bottom wall of the protective housing 16, and is doubly protected, making it less susceptible to silicone impregnation; at the same time, the waterproof and breathable membrane layer 12 is relatively easy to replace.

[0093] By providing a second through hole 134 on the side of the protective housing 16 facing the waterproof and breathable membrane layer 12, the smooth transmission of sound waves from the sound hole to the microphone unit 11 is ensured, air pressure balance is achieved, silicone injection and venting are facilitated, and assembly alignment is aided, thus maintaining good sound reception performance while improving sealing.

[0094] In some possible implementations, such as Figures 1 to 3 As shown, the protective housing 16 has a third through hole 135, and the second through hole 134 is disposed opposite to the third through hole 135. The side wall of the microphone unit 11 is opposite to the inner wall of the protective housing 16. On a plane perpendicular to the axial direction of the microphone unit 11, the orthographic projection of the second through hole 134 is within the range of the orthographic projection of the third through hole 135.

[0095] The second through hole 134 is located at the lower part of the protective housing 16, that is, on the side near the waterproof and breathable membrane layer 12 (also near the bottom wall acoustic hole of the mounting component 14).

[0096] The second through hole 134 can be one or more circular holes, opened in the lower end region of the side wall of the protective housing 16, and its main function is to allow sound waves to pass through and balance the air pressure.

[0097] The third through hole 135 is located on the upper part of the protective housing 16, that is, on the side away from the waterproof and breathable membrane layer 12 (near the top of the microphone unit 11 and the upper opening 142 of the mounting assembly 14).

[0098] On a plane perpendicular to the axis of microphone unit 11, the orthographic projection of the second through hole 134 falls entirely within the orthographic projection range of the third through hole 135 (i.e., the area of ​​the third through hole 135 is larger than that of the second through hole 134, and the two are aligned at their centers).

[0099] For example, the bottom wall of the protective housing 16 has a small-diameter second through hole 134 (0.5 mm in diameter) at its center, while the lower part of the side wall of the protective housing 16 (near the bottom wall) has a large-diameter third through hole 135 (1.5 mm in diameter), and the third through hole 135 is arranged coaxially around the second through hole 134. When silicone is injected, the silicone can flow in from the gap between the side wall of the mounting component 14 and the protective housing 16, enter the interior of the protective housing 16 through the third through hole 135, and then expel air through the gap near the second through hole 134; since the projection of the second through hole 134 is included by the third through hole 135, the silicone can be filled evenly and will not form dead zones in the corners.

[0100] By providing a smooth path for the flow and filling of liquid silicone through the technical solution of this application embodiment, and by setting a second through hole 134 and a third through hole 135 opposite to each other on the protective housing 16, and making the orthographic projection of the second through hole 134 fall within the orthographic projection range of the third through hole 135, air bubbles are avoided. At the same time, it is beneficial to air pressure balance and assembly positioning, thereby further improving the sound reception performance and manufacturing yield while ensuring sealing.

[0101] In some possible implementations, such as Figures 1 to 3 As shown, the silicone component 13 fills the sidewall of the mounting component 14 and the protective housing 16, and covers the third through hole 135.

[0102] Based on the above embodiments, the silicone component 13 not only fills the space between the sidewall of the mounting component 14 and the microphone unit 11 (as described above), but also further fills the space between the sidewall of the mounting component 14 and the protective housing 16, and covers the third through hole 135.

[0103] After assembling the sub-assemblies of the protective housing 16, microphone unit 11, and waterproof and breathable membrane layer 12, the sub-assemblies are placed inside the mounting assembly 14. Liquid silicone is then injected through the upper opening 142. The silicone first flows into the gap between the side wall of the mounting assembly 14 and the outer wall of the protective housing 16, filling the annular space. As the silicone level rises, it covers the third through-hole 135 on the protective housing 16 and may partially enter the third through-hole 135, but will not completely block the second through-hole 134. After the silicone cures, an integrated sealed structure is formed.

[0104] By filling the space between the sidewall of the mounting component 14 and the protective housing 16 with the silicone component 13 and covering the third through hole 135, the opening of the protective housing 16 is sealed. Combined with the top sealing structure, a complete airtight barrier is formed, which effectively prevents sound leakage and impurities from entering. At the same time, the silicone component 13 can fix the protective housing 16 and absorb vibration, simplifying the sealing and assembly process, and further reducing costs while improving the sound reception quality.

[0105] In some possible implementations, such as Figures 1 to 3 As shown, the microphone device 10 also includes a fixing member 17, one end of which is fixedly connected to the mounting assembly 14, and the other end is fixedly connected to a component adjacent to the mounting assembly 14.

[0106] The fastener 17 serves as a connecting bridge, and is fixedly connected to the mounting assembly 14 and adjacent components (such as the watch's frame assembly, base plate 20, or case).

[0107] The fastener 17 can be made of a material with a certain strength and rigidity, such as stainless steel or aluminum alloy. Its shape can be designed in various forms depending on the installation space and connection method.

[0108] For example, the fastener 17 can be an L-shaped bracket, which includes a vertical section and a horizontal section. The vertical section is fixedly connected to the side wall of the mounting assembly 14, while the horizontal section is fixed to an adjacent component (e.g., the base plate 20 of a watch) by bolts 19 or clips.

[0109] For example, the fastener 17 can be an annular flange. The fastener 17 is in the shape of a ring and fits around the outer periphery of the mounting assembly 14. It is connected to the mounting assembly 14 by snap-fit ​​or thread. The outer edge of the annular flange is provided with multiple lugs for screw connection with adjacent components.

[0110] For example, the fastener 17 can be a plate-shaped connecting piece, which is a rectangular or irregularly shaped thin plate. One end is fixed to the bottom wall 140 or side wall 141 of the mounting assembly 14 by screws or welding, and the other end extends to the adjacent component and is fixed by screws.

[0111] It should be understood that adjacent components can be structural parts of electronic devices, such as the base plate 20 of a watch, the mid-frame assembly 21, the inner wall of the casing, or the circuit board support. The connection method can be selected according to the material and design requirements of the adjacent components, which will not be elaborated here.

[0112] By adding a fixing member 17, the mounting component 14 is reliably connected to the external adjacent components, thereby achieving rapid positioning and stable installation of the microphone device 10, which facilitates assembly and maintenance. At the same time, the fixing member 17 can absorb external vibrations, reduce noise transmission, and ensure the accuracy of the sound hole alignment, thereby improving the impact resistance and long-term reliability of the microphone device 10 in complex internal environments.

[0113] In some possible implementations, such as Figures 1 to 3 As shown, the side wall 141 of the mounting component 14 is provided with a protrusion 18, which is snapped into connection with the fastener 17.

[0114] By providing a protrusion 18 on the side wall 141 of the mounting component 14 and snapping it with the fastener 17, rapid assembly is achieved, simplifying the assembly process and reducing the cost of parts and labor. At the same time, the snap-fit ​​structure provides reliable fixing force, facilitates disassembly and maintenance, and is beneficial for the stable installation of the microphone device 10 in a confined space.

[0115] For example, such as Figures 1 to 3As shown, the fastener 17 and the adjacent components of the mounting assembly 14 are fixedly connected by bolts 19. Through the technical solution of this application embodiment, the fastener 17 and the adjacent components are fixedly connected by bolts 19, achieving high-strength detachable fixing and ensuring the positional stability of the microphone device 10 during long-term use or impact; at the same time, the bolt 19 connection facilitates assembly and maintenance, adapts to different materials and thicknesses, and helps improve production efficiency and product reliability.

[0116] In some possible implementations, such as Figures 1 to 3 As shown, the fixing member 17 is provided with a fourth through hole 136. The wiring connected to the terminal 132 passes through the first through hole 133 and the fourth through hole 136 and is electrically connected to the main board in the microphone device 10. Through the technical solution of this application embodiment, by providing a fourth through hole 136 on the fixing member 17, the wiring passes through the first through hole 133 and the fourth through hole 136 in sequence and then connects to the main board. This achieves orderly guidance and double fixing of the wiring, reduces stress concentration and assembly interference, ensures sealing continuity, shortens the wiring length, and is beneficial to improving the reliability of electrical connection and the tensile and dustproof performance of the device.

[0117] Mounting component 14 can be injection molded, with at least two protrusions 18 integrally formed on the outer surface of its sidewall.

[0118] The upper surface of the protrusion 18 can be designed as a bevel or a hook surface to facilitate locking when it is engaged with the fastener 17.

[0119] The adjacent component can be the watch base plate 20 (usually made of metal or hard plastic). The base plate 20 has a threaded blind hole or through hole with a nut at the position corresponding to the fourth through hole 136 of the fastener 17.

[0120] Fit the fastener 17 against the base plate 20, aligning the fourth through hole 136 with the threaded hole, and then screw in a self-tapping screw or machine screw. After the screws are tightened, the fastener 17 is firmly pressed onto the base plate 20, thereby securing the entire microphone assembly 10 inside the watch.

[0121] As described above, the first through-hole 133 is located on the main body 130 of the silicone assembly 13, corresponding to the terminal 132 on the upper surface of the microphone unit 11. The traces connected to the terminal 132 are first soldered out from the terminal 132 of the microphone unit 11, then pass upward through the first through-hole 133, and leave the silicone assembly 13.

[0122] In addition to being used for bolt 19 connection, the fourth through hole 136 on the fastener 17 also serves as a cable guide hole. In specific designs, the fourth through hole 136 on one of the lugs can be enlarged or an additional dedicated through hole can be added, or the existing bolt 19 through hole can be used (provided that the bolt 19 does not occupy the entire hole diameter, or a hollow bolt 19 is used).

[0123] After the trace emerges from the first through hole 133, it extends along the gap between the side wall of the mounting assembly 14 and the fastener 17, and then passes through the fourth through hole 136 on the fastener 17.

[0124] The inner diameter of the fourth through hole 136 can be larger than the maximum width of the trace. After passing through the fourth through hole 136, the trace continues to extend to the main board assembly 15 of the microphone device 10 and is electrically connected by a connector or soldering.

[0125] Alternatively, a small amount of sealant can be filled into the gap between the inner wall of the first through hole 133 and the fourth through hole 136 and the wiring, or the elasticity of the silicone component 13 itself can be used to achieve a seal.

[0126] The fourth through hole 136 on the fastener 17 can also serve as a stress relief point for the wiring. When the wiring is pulled externally, the fastener 17 bears the tension, preventing it from being directly transmitted to the solder joint of the terminal 132 of the microphone unit 11.

[0127] The installation process of this application embodiment is as follows: Assemble the microphone unit 11, waterproof and breathable membrane layer 12, and protective housing 16 into the mounting assembly 14, fill with silicone and cure to form a silicone assembly 13 with a first through hole 133. The wiring does not pass through the first through hole 133 temporarily, or it is pre-passed but with slack. Solder one end of the wiring to the terminal 132 on the upper surface of the microphone unit 11, and then pass it upwards through the first through hole 133. Install the fixing member 17 to the side wall of the mounting assembly 14 by snap-fit, so that the protrusion 18 snaps into the slot. Note that during the snap-fit ​​process, the wiring should be pre-passed into the fourth through hole 136 of the fixing member 17 (or snap-fitted before passing through). Place the microphone device 10 with the fixing member 17 onto the watch base plate 20, align the bolt holes 19, and tighten the screws. At this point, the wiring has passed through the fourth through hole 136 and has sufficient length. Connect the free end of the wiring to the corresponding connector or pad on the motherboard, which can be fixed with adhesive.

[0128] This application also provides a watch, which includes the microphone device described in the above embodiments.

[0129] In some possible implementations, the watch is Figures 1 to 3 When the microphone device is in the middle, such as Figures 1 to 3 As shown, the watch also includes a base plate 20, a middle frame assembly 21, and a display assembly 22. The mounting assembly 14 is disposed on the base plate 20, and the base plate 20 is connected to the middle frame assembly 21. The display assembly 22 is disposed on the middle frame assembly 21 and is used to display and control the watch.

[0130] In some possible implementations, such as Figures 1 to 3As shown, the watch also includes a motherboard assembly 15 and a battery assembly 24, which are disposed between the base plate 20 and the mounting assembly 14. The microphone unit 11 has a terminal 132 on the side facing away from the waterproof and breathable membrane layer 12, and the wiring connected to the terminal 132 is electrically connected to the motherboard assembly 15 and / or the battery assembly 24.

[0131] This application also provides an electronic device, which includes a microphone device as described in the above embodiments, or a watch as described in the above embodiments.

[0132] This application does not limit the type of electronic device. For example, according to some embodiments, the electronic device may include wearable devices. Wearable devices include, but are not limited to: head-mounted devices (e.g., helmets or hats), devices worn on the ears (e.g., headphones), devices worn on the wrist (e.g., watches), and devices worn on other parts of the body (e.g., electronic necklaces, medical monitoring devices, or glasses). According to some embodiments, the electronic device may include portable terminals. For example, the electronic device may include, but is not limited to, mobile phones, general-purpose computing devices (e.g., laptops or tablets), personal digital assistants, etc. According to some embodiments, the electronic device may include other types of edge devices, such as personal computers, in-vehicle computers or in-vehicle computing platforms, or smart home electronic products. According to some embodiments, the electronic device may also include devices such as servers.

[0133] In the above embodiments, the descriptions of different embodiments each have their own emphasis. Parts not described in detail or recorded in a certain embodiment can be referred to in the relevant descriptions of other embodiments. Furthermore, the different embodiments described above can be freely combined as needed. Moreover, as technology evolves, the elements described in this application can be replaced by equivalent elements appearing after this application.

Claims

1. A microphone device, characterized in that, Includes microphone unit, waterproof and breathable membrane layer, silicone components and mounting components. The mounting assembly has a bottom wall and side walls, the bottom wall having acoustic holes, and the side walls forming an open top. The microphone unit is disposed within the mounting assembly; The waterproof and breathable membrane layer is disposed on the side of the microphone unit facing the bottom wall and covers the sound hole; The silicone assembly fills the space between the sidewall and the microphone unit and covers the upper opening to seal the top of the microphone unit.

2. The microphone device according to claim 1, characterized in that, The silicone assembly includes a connected main body and an extension. The main body covers the upper opening, and the extension abuts against the side wall of the mounting assembly and the outer wall of the microphone unit.

3. The microphone device according to claim 2, characterized in that, The microphone unit has a terminal on the side facing away from the waterproof and breathable membrane layer. The main body includes a first through hole. The wiring connected to the terminal is electrically connected to the motherboard assembly through the first through hole.

4. The microphone device according to claim 3, characterized in that, The inner wall of the first through hole and the wiring are sealed by the silicone component.

5. The microphone device according to claim 3 or 4, characterized in that, The microphone device also includes a protective housing. At least a portion of the microphone unit and at least a portion of the waterproof and breathable membrane layer are disposed within the protective housing.

6. The microphone device according to claim 5, characterized in that, The protective housing has a second through hole, which is located on the side of the protective housing facing the waterproof and breathable membrane layer.

7. The microphone device according to claim 6, characterized in that, The protective housing has a third through hole, and the second through hole is disposed opposite to the third through hole. The sidewall of the microphone unit is opposite to the inner wall of the protective housing. On a plane perpendicular to the axial direction of the microphone unit, the orthographic projection of the second through hole falls within the range of the orthographic projection of the third through hole.

8. The microphone device according to claim 7, characterized in that, The silicone component fills the sidewall of the mounting component and the protective housing, and covers the third through hole.

9. The microphone device according to any one of claims 5 to 8, characterized in that, The microphone device also includes a fixing member, one end of which is fixedly connected to the mounting assembly, and the other end of which is fixedly connected to a component adjacent to the mounting assembly.

10. The microphone device according to claim 9, characterized in that, The side wall of the mounting component is provided with a protrusion, which is snapped into connection with the fastener.

11. The microphone device according to claim 9 or 10, characterized in that, The fastener is fixedly connected to the component adjacent to the mounting assembly by bolts.

12. The microphone device according to any one of claims 9 to 11, characterized in that, The fixing member is provided with a fourth through hole, and the wiring of the terminal connection passes through the first through hole and the fourth through hole to be electrically connected to the motherboard in the microphone device.

13. A watch, characterized in that, The watch includes the microphone device according to any one of claims 1 to 12.

14. The watch according to claim 13, characterized in that, The watch also includes a base plate, a mid-frame assembly, and a display assembly. The mounting components are mounted on the base plate. The base plate is connected to the middle frame assembly, and the display assembly is disposed on the middle frame assembly for displaying and controlling the watch.

15. The watch according to claim 14, characterized in that, The watch also includes a motherboard assembly and a battery assembly. The motherboard assembly and the battery assembly are disposed between the base plate and the mounting assembly. The microphone unit has a terminal on the side facing away from the waterproof and breathable membrane layer. The wiring connected to the terminal is electrically connected to the motherboard assembly and / or the battery assembly.

16. An electronic device, characterized in that, The electronic device includes a microphone as claimed in any one of claims 1 to 12, or a watch as claimed in any one of claims 13 to 15.

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