Microphone mounting structure and wireless earphones

Abstract

The present invention belongs to the field of earphone manufacturing technology, and specifically relates to a microphone mounting structure and a wireless earphone, wherein the microphone mounting structure includes a handle portion, an elastic fixing member, an internal circuit board, and a microphone; the bottom surface of the handle portion having an internal cavity is provided with a through-hole for the microphone; the elastic fixing member is arranged in the cavity, with a mounting groove at one end and a first opening at the other end; one end of the first opening is connected to the microphone appearance hole, and the other end is connected to the mounting groove; the first end of the internal circuit board is fixed in the mounting groove, with a sound transmission groove at the first end, and the sound transmission groove is connected to the first opening; the microphone with a sound receiving hole is fixed to one end of the surface of the internal circuit board, and the sound receiving hole is connected to the sound transmission groove. In the wireless earphone of the embodiment of the present invention, one end of the sound transmission groove of the internal circuit board is connected to the sound receiving hole of the microphone, and the other end is connected to the appearance hole of the chime, thereby realizing the sound receiving function of the microphone, and the production and assembly steps are convenient, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of earphone manufacturing, and in particular to a microphone mounting structure and a wireless earphone. Background Art

[0002] Many wireless headsets currently on the market place the microphone's aperture at the bottom of the handle for aesthetic reasons. However, due to the limited space at the bottom of the handle and the layout of the internal circuit boards, the microphone cannot be mounted vertically and aligned with the aperture using the main circuit board. Instead, a small circuit board is typically installed at the bottom of the handle, the microphone is soldered to the small board, and then connected to the main circuit board via wires or a flexible board to ensure electrical connectivity between the microphone and the main circuit board for the microphone to receive sound. This type of microphone mounting method and production process involves numerous steps, resulting in high production costs and complex assembly. Furthermore, the wires or flexible board connections lack reliability, making the microphone prone to malfunction during use. Summary of the Invention

[0003] The object of the present invention is to provide a microphone mounting structure and a wireless headset, which can realize simple and quick installation of the microphone while ensuring effective alignment of the microphone body sound receiving hole and the microphone appearance hole.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] In one aspect, the present invention provides a microphone mounting structure, comprising:

[0006] A handle portion having a cavity therein, wherein a bottom surface of the handle portion is provided with a through-hole for a microphone, the microphone hole being in communication with the cavity;

[0007] an elastic fixing member disposed in the cavity, wherein one end of the elastic fixing member is provided with a mounting groove, and the other end of the elastic fixing member is provided with a first opening, one end of the first opening is communicated with the microphone appearance hole, and the other end of the first opening is communicated with the mounting groove;

[0008] an internal circuit board, disposed in the cavity, with a first end of the internal circuit board fixed to the mounting slot, a sound transmission slot being provided at the first end of the internal circuit board, the sound transmission slot being in communication with the first opening;

[0009] The microphone is fixed on one end of the surface of the internal circuit board. The microphone is provided with a sound receiving hole, which is communicated with the sound transmission groove.

[0010] As a preferred structure of the present invention, the microphone appearance hole is located at the center of the bottom surface; the internal circuit board coincides with the central axis of the handle portion.

[0011] As a preferred structure of the present invention, the mounting groove includes two parallel and opposite inner surfaces, and the two inner surfaces are respectively attached to the upper surface and the lower surface of the internal circuit board.

[0012] As a preferred structure of the present invention, the sound transmission groove is a U-shaped groove running through the upper surface and the lower surface, the opening of the U-shaped groove is located at the first end face of the internal circuit board and extends toward the middle of the internal circuit board, and the internal space of the U-shaped groove is aligned with the sound receiving hole.

[0013] As a preferred structure of the present invention, the elastic fixing member is further provided with a receiving groove for receiving the microphone, and the receiving groove is communicated with the installation groove.

[0014] As a preferred structure of the present invention, the elastic fixing member is made of rubber.

[0015] As a preferred structure of the present invention, the contact surface between the elastic fixing member and the internal circuit board is sealed by liquid glue.

[0016] As a preferred structure of the present invention, the elastic fixing member forms a seal with the internal circuit board and the handle portion through interference fit.

[0017] As a preferred structure of the present invention, the microphone is fixed on the internal circuit board by reflow soldering.

[0018] On the other hand, a wireless headset is provided, comprising the above-mentioned microphone mounting structure.

[0019] Beneficial effects of the present invention: The microphone mounting structure and wireless headset provided by the present invention weld the microphone to the internal circuit board, and use elastic fixing parts to fix the internal circuit board in the handle; a sound transmission groove is provided on the internal circuit board, so that one end of the sound transmission groove is connected to the microphone receiving hole, and the other end is connected to the appearance hole of the chime, thereby realizing the sound receiving function of the microphone; the production and assembly steps of the microphone mounting structure are convenient, the structure is simple, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an exploded view of a microphone mounting structure provided by an embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of a microphone mounting structure provided by an embodiment of the present invention;

[0022] Figure 3 2 is a schematic structural diagram of an elastic fixing member provided in an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Handle; 11. Microphone hole; 12. Bottom;

[0025] 2. Elastic fixing member; 21. Mounting groove; 22. First opening; 23. First circumferential surface; 24. Second circumferential surface;

[0026] 3. Internal circuit board; 31. Sound transmission slot; 32. First end surface; 33. Upper surface; 34. Lower surface;

[0027] 4. Microphone; 41. Sound receiving hole. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, rather than all structures.

[0029] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] like Figure 1-Figure 3As shown, an embodiment of the present invention provides a microphone mounting structure, comprising a handle portion 1, an elastic fixing member 2, an internal circuit board 3, and a microphone 4. The handle portion 1 is cylindrical and is intended to be held by an operator. It has a cavity with a bottom surface 12 at one end. The bottom surface 12 is provided with a through-hole 11 for the microphone, through which external sound enters the cavity of the handle portion 1. The elastic fixing member 2 is disposed within the cavity of the handle portion 1. One end of the elastic fixing member 2 has a mounting groove 21, which extends through the side of the elastic fixing member 2 to form a through groove. The other end of the elastic fixing member 2 is flat and abuts against the bottom surface 12 of the handle portion 1. The end of the elastic fixing member 2 connected to the bottom surface 12 is provided with a first opening 22. One end of the first opening 22 is connected to the microphone appearance hole 11, and the other end of the first opening 22 is connected to the mounting groove 21. The internal circuit board 3 is fixed to the mounting groove 21. Electronic components are arranged on both sides of the internal circuit board 3. The internal circuit board 3 is provided with a sound transmission groove 31, which extends from the first end surface 32 of the internal circuit board 3 to the middle of the internal circuit board 3; the sound transmission groove 31 is connected to the first opening 22. The microphone 4 is fixed to one end of the surface of the internal circuit board 3, that is, the end close to the microphone appearance hole 11, by reflow soldering. The microphone 4 has a sound receiving hole 41 for collecting external sound. Preferably, the sound receiving hole 41 is located on the surface where the microphone 4 contacts the internal circuit board 3. The sound receiving hole 41 of the microphone 4 is connected to the sound transmission groove 31. The above arrangement allows external sound to enter the sound transmission groove 31 through the microphone appearance hole 11 and finally enter the sound receiving hole 41 of the microphone 4, thereby enabling the microphone 4 to receive sound.

[0033] Furthermore, the microphone aperture 11 is located at the center of the bottom surface 12 of the handle 1; the internal circuit board 3 coincides with the central axis of the handle 1; and the first opening 22 is concentrically aligned with the microphone aperture 11. This design ensures that the axial direction of the sound transmission slot 31 is vertically aligned with the microphone aperture 11, thereby minimizing the sound transmission path and preventing sound loss. Furthermore, the upper surface 33 and lower surface 34 of the internal circuit board 3 are covered with electronic components, which are positioned at the central axis of the handle 1 to minimize interference between the electronic components on the internal circuit board 3 and the inner surface of the handle 1 cavity.

[0034] Furthermore, the mounting slot 21 has two parallel inner surfaces, which respectively fit the upper surface 33 and lower surface 34 of the internal circuit board 3. This arrangement ensures a good fit between the internal circuit board 3 and the mounting slot 21, thereby improving the sealing performance of the sound transmission slot 31 and preventing sound loss.

[0035] Furthermore, the sound transmission slot 31 is a U-shaped slot, with its opening located on the first end surface 32 and extending into the interior of the internal circuit board 3. The interior space of the U-shaped slot is aligned with the sound receiving hole 41. Preferably, the U-shaped slot extends through the upper surface 33 and lower surface 34 of the internal circuit board 3 to increase the sound transmission path area of ​​the U-shaped slot and avoid interference with the first opening 22, thereby more efficiently transmitting sound.

[0036] Furthermore, the elastic fixing member 2 is further provided with a receiving groove for receiving the microphone 4 fixed on the internal circuit board 3, and the receiving groove is connected to the mounting groove 21. The receiving groove completely receives the microphone 4 in the elastic fixing member 2, which can improve the sealing performance of the entire structure.

[0037] Furthermore, in an embodiment of the present invention, the contact surface between the elastic fixing member 2 and the internal circuit board 3 is fixed and sealed using liquid glue. Specifically, liquid glue is applied to the two opposite inner surfaces of the mounting groove 21, and the internal circuit board 3 is fixed in the mounting groove 21. The adhesive layer of the liquid glue is relatively thin and will not affect the electronic components on the internal circuit board 3. It is also easy to apply and has good sealing performance. By sealing the contact surface between the elastic fixing member 2 and the internal circuit board 3, the present invention can avoid excessive sound leakage and loss when the sound passes through the sound transmission groove 31, and can better realize the sound receiving function of the microphone 4.

[0038] Furthermore, the elastic fixing member 2 is made of rubber. The elastic fixing member 2 made of rubber has good elasticity and recovery ability, strong anti-aging performance, can effectively compensate for gaps, and has good sealing performance. The elastic fixing member 2 is an irregularly shaped elastomer, and part of the side surface includes a first circumferential surface 23 and a second circumferential surface 24. The first circumferential surface 23 and the second circumferential surface 24 are used to stick to the inner surface of the handle portion 1; the elastic fixing member 2, the internal circuit board 3, and the handle portion 1 are sealed by interference fit. In the actual production process, the internal circuit board 3 and the elastic fixing member 2 are first fixedly assembled, and then the internal circuit board 3 and the elastic fixing member 2 are inserted into the handle portion 1 together. The elastic fixing member 2 and the inner wall of the handle portion 1 are interfered with and squeezed together to achieve a good seal between the elastic fixing member 2 and the handle portion 1. Specifically, the distance between the lower surface 34 of the internal circuit board 3 and the inner wall of the handle portion 1 is less than the wall thickness between one inner surface of the mounting groove 21 and the first circumferential surface 23, and the distance between the upper surface 33 of the internal circuit board 3 and the inner wall of the handle portion 1 is less than the wall thickness between the other inner surface of the mounting groove 21 and the second circumferential surface 24. The above arrangement effectively improves the airtightness of the sound transmission groove 31, can better realize the sound receiving function of the microphone 4, and avoid sound loss. Moreover, the above sealing method does not require the use of liquid glue, which can not only ensure the sealing performance, but also further simplify the process steps. Of course, in other embodiments, the sealing between the elastic fixing part 2 and the handle portion 1 can also be achieved by applying liquid glue, or the sealing between the elastic fixing part 2 and the handle portion 1 can be achieved by using interference fit and liquid glue at the same time, which is not limited to this embodiment.

[0039] This embodiment also provides a wireless headset including the aforementioned microphone mounting structure. During assembly, the microphone 4 is first secured to the end of the internal circuit board 3 near the microphone external hole 11 via reflow soldering. The elastic fixing member 2 is then fitted onto the internal circuit board 3, positioning the internal circuit board 3 within the mounting groove 21. Liquid glue is applied to the contact surface between the internal circuit board 3 and the elastic fixing member 2 for further securing and sealing, or simply by using an interference fit. The internal circuit board 3, with the elastic fixing member 2 fitted, is then placed within the cavity of the handle 1 until the end surface of the elastic fixing member 2 abuts the bottom surface 12 of the handle 1, ensuring the tightness of the sound transmission groove 31. During assembly, the elastic fixing member 2 is squeezed by the internal circuit board 3 and the inner wall of the handle 1, forming an effective seal between the contact surface of the elastic fixing member 2 and the internal circuit board 3. At this point, one end of the sound transmission groove 31 of the internal circuit board 3 is coaxially connected to the microphone external hole 11, and the other end is connected to the sound receiving hole 41 of the microphone 4, thereby enabling the microphone 4 to receive sound.

[0040] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A microphone mounting structure, characterized in that: include: A handle portion (1) has a cavity therein, and a bottom surface (12) of the handle portion (1) is provided with a through microphone appearance hole (11), the microphone appearance hole (11) being in communication with the cavity; An elastic fixing member (2) is arranged in the cavity, one end of the elastic fixing member (2) is provided with a mounting groove (21), the other end of the elastic fixing member (2) is provided with a first opening (22), one end of the first opening (22) is communicated with the microphone appearance hole (11), and the other end of the first opening (22) is communicated with the mounting groove (21); An internal circuit board (3) is disposed in the cavity, and a first end of the internal circuit board (3) is fixed to the mounting groove (21), and a sound transmission groove (31) is provided at the first end of the internal circuit board (3), and the sound transmission groove (31) is communicated with the first opening (22); A microphone (4) is fixed to one end of the surface of the internal circuit board (3); a sound receiving hole (41) is provided on the microphone (4); and the sound receiving hole (41) is communicated with the sound transmission slot (31); The mounting groove (21) comprises two parallel and opposite inner surfaces, the two inner surfaces respectively being attached to the upper surface (33) and the lower surface (34) of the internal circuit board (3); The sound transmission groove (31) is a U-shaped groove that passes through the upper surface (33) and the lower surface (34), the opening of the U-shaped groove is located at the first end surface (32) of the internal circuit board (3) and extends toward the middle of the internal circuit board (3), and the internal space of the U-shaped groove is aligned with the sound receiving hole (41); The first opening (22) is concentrically aligned with the microphone appearance hole (11).

2. The microphone mounting structure according to claim 1, wherein: The microphone appearance hole (11) is located at the center of the bottom surface (12); the internal circuit board (3) coincides with the central axis of the handle portion (1).

3. The microphone mounting structure according to claim 1, wherein: The elastic fixing member (2) is further provided with a receiving groove for receiving the microphone (4), and the receiving groove is communicated with the mounting groove (21).

4. The microphone mounting structure according to claim 1, wherein: The material of the elastic fixing piece (2) is rubber.

5. The microphone mounting structure according to claim 1, wherein: The contact surface between the elastic fixing member (2) and the internal circuit board (3) is sealed by liquid glue.

6. The microphone mounting structure according to claim 1, wherein: The elastic fixing member (2), the internal circuit board (3) and the handle portion (1) are sealed by interference fitting.

7. The microphone mounting structure according to claim 1, wherein: The microphone (4) is fixed on the internal circuit board (3) by reflow soldering.

8. A wireless headset, characterized in that: It comprises the microphone mounting structure described in any one of claims 1-7.

Images