Ultrathin microphone diaphragm and microphone

Abstract

The utility model relates to the technical field of microphones, in particular to an ultrathin microphone diaphragm and a microphone. The loudspeaker comprises a permanent magnet sheet, an FPC, a coil and a vibrating diaphragm. The vibrating diaphragm is located at the bottom of the whole diaphragm as a base material; the coil is arranged on the upper surface of the vibrating diaphragm and surrounds the vibrating diaphragm for a plurality of turns; the FPC is arranged on one side of the vibrating diaphragm, the input end of the coil is connected with the first end of the FPC, and the output end of the coil is connected with the second end of the FPC through an insulation jumper wire; a support member is arranged along the upper surface of the diaphragm, wherein the support member is located outside the coil; and the permanent magnet sheet covers the supporting piece. The antenna is suitable for manufacturing products with requirements for whole-surface directivity, the antenna is pasted on the whole surface in a diaphragm mode, holes do not need to be formed, and the air tightness, the radio directivity and the precision of the whole machine are all higher and more applicable.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to an ultra-thin microphone diaphragm and microphone. Background Technology

[0002] A microphone, scientifically known as a transducer, is a device that converts sound signals into electrical signals. Microphones are classified into dynamic, condenser, electret, and the more recently developed silicon micromicrophones, as well as liquid microphones and laser microphones. Most microphones are electret condenser microphones, which work by using a diaphragm made of polymer material with permanent charge isolation.

[0003] Currently, most microphones on the market are component-packaged, requiring high airtightness and full-surface directional sound pickup. Based on this, this application proposes an ultra-thin microphone diaphragm and microphone, in which the diaphragm is attached to the entire surface without the need for openings, resulting in higher overall airtightness, sound pickup directionality, and accuracy, making it more suitable for various applications. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an ultra-thin microphone diaphragm and microphone.

[0005] The technical solution of this utility model is an ultra-thin microphone diaphragm, comprising a permanent magnet, an FPC, a coil, and a diaphragm;

[0006] The diaphragm, as the substrate, is located at the bottom of the entire diaphragm; the coil is set on the upper surface of the diaphragm and is wound around several times; the FPC is set on one side of the diaphragm, wherein the input end of the coil is connected to the first end of the FPC, and the output end is connected to the second end of the FPC through an insulated jumper wire;

[0007] A support is provided along the upper surface of the diaphragm, with the support located outside the coil;

[0008] The permanent magnet sheet covers the support.

[0009] Preferably, the diaphragm is provided with several reinforcing ribs.

[0010] Preferably, the permanent magnet sheet provides the magnetic field for the entire diaphragm.

[0011] Preferably, the membrane has a box-shaped sheet structure, including square, circular, and rounded rectangle.

[0012] Preferably, the number of turns and the area of ​​the coil are determined by the area of ​​the diaphragm.

[0013] Preferably, after the coil is wound into a loop, the middle position is left empty to form a hollow area.

[0014] Preferably, the support is a rubber frame, which is fixed to the diaphragm by adhesive.

[0015] Preferably, the support is an epoxy resin layer, which is fixed to the diaphragm by printing.

[0016] Preferably, the diaphragm receives sound and vibrates, and the diaphragm vibration coil reciprocates to cut the magnetic induction lines generated by the permanent magnet sheet, causing the coil to generate a changing current.

[0017] A microphone with an ultra-thin microphone diaphragm is made using the aforementioned diaphragm; the microphone is attached to the surface of the object to receive audio signals and convert sound into electrical signals.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This invention innovatively improves the traditional component-encapsulated microphone into a diaphragm-type microphone. It uses a combination of permanent magnets, support components, coils, and a diaphragm to form a box-shaped sheet structure, which can be manufactured in any shape (square, round, or other irregular shapes). When attached to an object, it can be used to receive sound and convert it into an electrical signal. Sound propagates as waves to the object, causing it to vibrate. This vibration resonates, causing the diaphragm to vibrate. The diaphragm vibration drives the coil to reciprocate, cutting the magnetic induction lines generated by the permanent magnets, thus generating a changing current. The electrical signal is transmitted through the FPC to the backend sound amplification and processing circuit, completing the entire sound-to-electrical signal conversion process. This invention is suitable for manufacturing products requiring full-surface directivity. The diaphragm is attached to the entire surface, eliminating the need for openings, resulting in higher overall airtightness, better directivity, and greater applicability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the diaphragm in an embodiment of the present invention;

[0022] Figure 3 This is a partially enlarged view of the cross-section of the diaphragm in an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the diaphragm in an embodiment of the present invention.

[0024] Reference numerals: 1. Permanent magnet; 2. Support; 3. Coil; 4. FPC; 41. Binding position; 42. Insulating jumper wire; 5. Diaphragm. Detailed Implementation

[0025] Example 1

[0026] like Figure 1 As shown, the present invention proposes an ultra-thin microphone diaphragm, comprising a permanent magnet 1, an FPC 4, a coil 3, and a diaphragm 5;

[0027] The diaphragm 5, as a substrate, is located at the bottom of the entire diaphragm. In this embodiment, the diaphragm substrate can be an organic substrate such as PET or PEEK, or a composite material such as ceramic. The coil 3 is disposed on the upper surface of the diaphragm 5 and is wound around several times. After the coil 3 is wound into a loop, the middle position is left empty to form a hollow area so that the diaphragm 5 can vibrate. The FPC4 is disposed on one side of the diaphragm 5, wherein the input end of the coil 3 is connected to the first end of the FPC4, and the output end is connected to the second end of the FPC4 through an insulated jumper 42. The support member 2 is disposed along the upper surface of the diaphragm 5, wherein the support member 2 is located outside the coil 3.

[0028] like Figure 2 As shown, the permanent magnet 1 covers the support 2; the permanent magnet 1 provides a magnetic field for the entire diaphragm.

[0029] In one optional embodiment, a number of reinforcing ribs are provided on the diaphragm 5 to improve the overall strength of the diaphragm 5, while the reinforcing ribs can provide compliance for the vibration of the diaphragm 5; if the area of ​​the diaphragm 5 is small, the reinforcing ribs may not be provided.

[0030] like Figure 4 As shown, the diaphragm has a box-shaped sheet structure, including square, circular, and rounded rectangle shapes. The number of turns and area of ​​coil 3 are determined by the area of ​​the diaphragm.

[0031] Support member 2 is arranged in a closed ring structure along FPC4;

[0032] In an optional embodiment, the support 2 is a plastic frame that is fixed to the FPC4 by adhesive.

[0033] In an optional embodiment, the support 2 is an epoxy resin layer, which is fixed to the FPC4 by printing.

[0034] Support member 2 provides support for the entire diaphragm, enabling the entire device to form a box-shaped sheet structure.

[0035] In this embodiment, the diaphragm 5 receives sound and vibrates. The vibration of the diaphragm 5 drives the coil 3 to reciprocate and cut the magnetic induction lines generated by the permanent magnet sheet 1, causing the coil 3 to generate a changing current. The electrical signal is transmitted to the sound amplification and processing circuit at the back end through the output terminal 41 of the FPC4, completing the entire process of converting sound into electrical signal.

[0036] Example 2

[0037] This embodiment provides a microphone with an ultra-thin microphone diaphragm, which is made using the diaphragm described in Embodiment 1; the microphone is attached to the surface of the object to receive audio signals and convert sound into electrical signals.

[0038] In this embodiment, the working principle is as follows: The diaphragm surface of the microphone diaphragm (hereinafter referred to as the diaphragm) is attached to the object. The sound propagates to the object in the form of waves, and the object will vibrate. The vibration of the object causes the diaphragm to vibrate through resonance. The diaphragm vibration coil 3 reciprocates to cut the magnetic induction lines generated by the permanent magnet sheet, causing the coil to generate a changing current. The electrical signal is transmitted to the sound amplification and processing circuit at the back end through the FPC output terminal, completing the entire process of converting sound into electrical signal.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An ultrathin microphone diaphragm, characterized by, It includes a permanent magnet sheet (1), an FPC (4), a coil (3), and a diaphragm (5); The diaphragm (5) is located at the bottom of the entire diaphragm as a substrate; the coil (3) is set on the upper surface of the diaphragm (5) and is wrapped around several turns; the FPC (4) is set on one side of the diaphragm (5), wherein the input end of the coil (3) is connected to the first end of the FPC (4), and the output end is connected to the second end of the FPC (4) through an insulated jumper (42); A support member (2) is provided along the upper surface of the diaphragm (5), wherein the support member (2) is located outside the coil (3); The permanent magnet sheet (1) is placed on the support (2).

2. The ultra-thin microphone diaphragm of claim 1, wherein, Several reinforcing ribs are provided on the diaphragm (5).

3. The ultra-thin microphone diaphragm of claim 1, wherein, The permanent magnet (1) provides a magnetic field for the entire membrane.

4. The ultra-thin microphone diaphragm of claim 1, wherein, The membrane has a box-shaped sheet structure, including square, circular, and rounded rectangle shapes.

5. The ultra-thin microphone diaphragm of claim 1, wherein, The number of turns and area of ​​the coil (3) are determined by the area of ​​the diaphragm.

6. The ultra-thin microphone diaphragm of claim 1, wherein, After the coil (3) is wound into a circle, the middle position is left empty to form a hollow area.

7. The ultra-thin microphone diaphragm of claim 1, wherein, The support (2) is a rubber frame, which is fixed to the diaphragm (5) by adhesive.

8. The ultra-thin microphone diaphragm of claim 1, wherein, The support (2) is an epoxy resin layer, which is fixed to the diaphragm (5) by printing.

9. The ultra-thin microphone diaphragm of claim 1, wherein, The diaphragm (5) receives sound and vibrates. The diaphragm (5) vibrates the coil (3) to cut the magnetic induction lines generated by the permanent magnet sheet (1), causing the coil (3) to generate a changing current.

10. A microphone of an ultrathin microphone diaphragm, characterized by, Made using the diaphragm as described in any one of claims 1-9; the microphone is attached to the surface of the object to receive audio signals and convert sound into electrical signals.

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