中框组件及电子设备
By employing detachable mounting components and flexible circuit board design in electronic devices, the problem of unstable microphone assembly fixation has been solved, improving stability and reliability while reducing space occupation and production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, microphone components are not fixed stably in electronic devices and are easily shaken by external forces, affecting the reliability of the device. At the same time, fasteners increase the operating space requirements and occupy internal space of the device.
A detachable fixing component is used to fix the microphone assembly's circuit board to the inner side of the mid-frame. The combination of fixing components and fasteners ensures the stability of the microphone assembly, while flexible circuit boards and limiting components improve assembly efficiency and reliability.
It improves the stability of the microphone assembly, avoids damage from shaking, reduces the space requirements for fasteners, enhances the structural strength and reliability of the device, and reduces production costs.
Smart Images

Figure CN224521118U_ABST
Abstract
Claims
1. A middle frame assembly, characterized in that, The mid-frame component includes: A mid-frame, the mid-frame including a support portion and a border surrounding the support portion; A microphone assembly includes a circuit board and a microphone. The circuit board includes a first surface and a second surface facing away from each other. The first surface is opposite to the inner side of the frame. The microphone is disposed on the second surface. The frame is provided with a sound transmission channel communicating with the microphone. The circuit board is provided with a communication hole for communicating with the microphone and the sound transmission channel. A fixing component is detachably disposed on the inner side of the frame corresponding to the position of the circuit board, and the fixing component is used to fix the circuit board to the inner side of the frame.
2. The middle frame assembly of claim 1, wherein, The fixing component includes: A fastener is provided, which is opposite to the inner side of the frame, and the circuit board is connected to the fastener. A fastener, in a direction perpendicular to the inner side of the frame, passes through the fixing member and is connected to the frame.
3. The middle frame assembly of claim 2, wherein, The circuit board is a flexible circuit board, and the fixing member includes: A first fixing plate is located between the inner side of the frame and the circuit board. The circuit board is connected to the surface of the first fixing plate away from the frame, and the first fixing plate is provided with a first clearance hole corresponding to the position of the sound transmission channel. A second fixing plate is disposed on the second surface, and the second fixing plate has an avoidance cutout corresponding to the position of the circuit board.
4. The middle frame assembly of claim 3, wherein, The fixing component also includes: A limiting member is provided to limit the relative position between the first fixing plate and the second fixing plate.
5. The middle frame assembly of claim 4, wherein, The limiting component includes: The first limiting part includes at least two first limiting units disposed on the second fixed plate, and the at least two first limiting units are distributed at intervals along the outer periphery of the second fixed plate; The second limiting part includes at least one second limiting unit disposed on the first fixing plate, and each second limiting unit is located between two adjacent first limiting units.
6. The middle frame assembly of claim 5, wherein, Each of the first limiting units includes a protruding structure, which protrudes from the second fixing plate toward the first fixing plate, and the first fixing plate is located within the first limiting space enclosed by the plurality of protruding structures; Each of the second limiting units includes a limiting plate, the limiting plate including a connected extension segment and a limiting segment, the first end of the extension segment being connected to the first fixed plate, the second end of the extension segment extending out from the first limiting space, the first end of the limiting segment being connected to the extension segment, the second end of the limiting segment extending away from the frame along a direction perpendicular to the inner side of the frame, and the second fixed plate being located within the second limiting space enclosed by the plurality of limiting segments.
7. The middle frame assembly according to any one of claims 3-6, wherein, The mid-frame component also includes: A sealing element is disposed between the inner side of the first fixing plate and the frame, and the sealing element is provided with a second clearance hole corresponding to the position of the sound transmission channel.
8. The middle frame assembly of claim 7, wherein, The mid-frame component also includes: A waterproof and breathable membrane layer is disposed between the sealant and the first fixing plate.
9. The middle frame assembly of claim 8, wherein, The fastener penetrates both the seal and the waterproof and breathable membrane layer.
10. The middle frame assembly of any one of claims 1-6, wherein, Along a direction perpendicular to the inner side of the frame, the inner side of the frame is provided with an inwardly accommodating groove, and a portion of the microphone assembly and at least a portion of the fixing assembly are located within the accommodating groove.
11. The middle frame assembly of any one of claims 1-6, wherein, The frame includes a side frame, the sound transmission channel is disposed on the side frame, and the fixing component detachably fixes the circuit board to the inner side of the side frame.
12. An electronic device, comprising: The electronic device includes a mid-frame assembly as described in any one of claims 1 to 11.