CN215581998U - Sealed waterproof construction and headphone - Google Patents

Abstract

The utility model provides a sealed waterproof structure and a headset, which comprise a noise reduction microphone and a loudspeaker body, and further comprise a flexible circuit board, a loudspeaker cover and a loudspeaker base. The flexible circuit board is electrically connected with the noise reduction microphone and the loudspeaker body respectively. The loudspeaker base with the loudspeaker lid closes and forms the holding chamber for hold fall make an uproar miaow with the loudspeaker body, the loudspeaker base with the lid of loudspeaker lid closes the department and sets up the tang structure, scribble sealed glue in the tang structure, the tang structure has still been offered and is used for wearing out flexible circuit board's first groove of dodging. According to the sealing waterproof structure, the flexible circuit board is arranged to be electrically connected with the noise reduction microphone and the loudspeaker body respectively to replace a plurality of split connecting wires, so that the external circuits of the noise reduction microphone and the loudspeaker body are integrated into a whole, the structural design cost is reduced, the workload of a sealing process is reduced, and the production efficiency is improved.

Description

Sealed waterproof construction and headphone

Technical Field

The utility model relates to the technical field of speakers, in particular to a sealing waterproof structure of a headset.

Background

The earphone is a pair of conversion units which receive the electric signals sent by the media player or receiver and convert the electric signals into audible sound waves by using a loudspeaker close to the ear. The headset is typically detachable from the media player and utilizes a plug connection. The advantage is that the user can listen to the sound independently without influencing other people. Can also isolate the sound of the surrounding environment, and is very helpful for people who use in a noisy environment such as a recording studio, a bar, a trip, sports, and the like. The earphone is originally used for telephone and radio, but with the prevalence of portable electronic devices, the earphone is often used for mobile phones, walkmans, radios, portable electronic games, digital audio players, and the like.

Earphones can be classified into in-ear earphones and headphones according to wearing manners. Among them, the headphone with noise reduction function is popular among consumers due to its comfortable wearing manner and high noise reduction performance.

Have the headphone of function of making an uproar of falling among the prior art, its loudspeaker connecting wire and miaow connecting wire need be connected with the mainboard after wearing out from the loudspeaker shell, in order to reach waterproof purpose, need seal the design to the threading department of loudspeaker shell. Because loudspeaker connecting wire is the solitary line body with the miaow connecting wire, consequently need carry out solitary sealed processing to the threading department of every connecting wire, the production procedure is very loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the production process is complicated in the sealing waterproof structure of the loudspeaker shell in the prior art, the technical scheme provided by the utility model is as follows:

the sealing waterproof structure comprises a noise reduction microphone, a loudspeaker body, a flexible circuit board, a loudspeaker cover and a loudspeaker base.

The flexible circuit board is electrically connected with the noise reduction microphone and the loudspeaker body respectively. The loudspeaker base with the loudspeaker lid closes and forms the holding chamber for hold fall make an uproar miaow with the loudspeaker body, the loudspeaker base with the lid of loudspeaker lid closes the department and sets up the tang structure, scribble sealed glue in the tang structure, the tang structure has still been offered and is used for wearing out flexible circuit board's first groove of dodging.

According to the sealing waterproof structure, the flexible circuit board is arranged to be electrically connected with the noise reduction microphone and the loudspeaker body respectively so as to replace a plurality of split connecting wires, so that an external circuit of the noise reduction microphone and the loudspeaker body is integrated into a whole, the sealing structure only needs to be designed for one flexible circuit board, and the processing steps only need to be operated for one flexible circuit board, so that the structural design cost is reduced, the workload of a sealing process is reduced, and the production efficiency is improved; by designing the seam allowance structure at the joint of the horn cover and the horn base and coating the sealant in the seam allowance structure, the accommodating cavity formed by the horn cover and the horn base can be effectively sealed, so that a better waterproof effect is formed on the noise reduction microphone and the horn body in the cavity, and the protectiveness of other components in the cavity is further enhanced; adopt this waterproof sealing structure's headphone, water-proof effects is outstanding, and life is longer.

In one possible design, the seam allowance structure comprises a male seam allowance and a female seam allowance, the male seam allowance is arranged on one of the horn base and the horn cover, and the female seam allowance is arranged on the other of the horn base and the horn cover.

In a possible design, the male seam allowance is arranged on the horn cover, the female seam allowance is arranged on the horn base, and the first avoiding groove is formed in the female seam allowance.

In a possible design, the horn base further has a dam surrounding the outer peripheral side of the concave spigot and used for blocking sealant, and the dam is provided with a second avoiding groove used for penetrating out of the flexible circuit board.

In one possible design, a fixing groove for clamping and fixing the flexible circuit board is formed in the position, located inside the horn cover, of the horn base, and a limiting block for clamping and fixing the flexible circuit board is arranged in the position, located outside the horn cover, of the horn base.

In one possible design, the horn base is further provided with a horn mounting groove.

In one possible design, the flexible circuit board is provided with a tin through hole, and the flexible circuit board is welded with the loudspeaker body through the tin through hole.

In one possible design, the flexible circuit board and the noise reduction microphone are connected by a patch.

In a possible design, the end of the flexible circuit board extending out of the horn cover is electrically connected with the main board.

The headset comprises the sealing waterproof structure.

Drawings

FIG. 1 is a schematic view of a waterproof and airtight structure according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a waterproof seal structure according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic view of a speaker base according to an embodiment of the present invention;

fig. 5 is a schematic connection diagram of the noise reduction microphone, the speaker body and the flexible circuit board according to an embodiment of the present invention;

fig. 6 is a schematic view of the horn cover of fig. 1 after being hidden.

Reference numerals: 10. a noise reduction microphone; 20. a horn body; 30. a flexible circuit board; 31. tin-permeable holes; 40. a horn cover; 50. a horn base; 51. a first avoidance slot; 52. a second avoidance slot; 53. a box dam; 54. fixing grooves; 55. a limiting block; 56. a horn mounting groove; 60. a spigot structure; 61. a male end; 62. a concave spigot.

Detailed Description

The technical solution of the present invention will be described with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "side", "inside", "outside", "top", "bottom", and the like indicate orientations or positional relationships based on installation, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

It should be noted that, in the embodiments of the present invention, the same reference numerals are used to denote the same components or parts, and for the same components or parts in the embodiments of the present invention, only one of the components or parts may be labeled with the reference numeral, and it should be understood that the reference numerals are also applicable to other similar components or parts.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 6, the waterproof sealing structure in this embodiment is used in a headphone with a noise reduction function, and includes a noise reduction microphone 10, a speaker body 20, a flexible circuit board 30, a speaker cover 40, and a speaker base 50.

In general, earphones are divided into an active noise reduction earphone and a passive noise reduction earphone, and the difference is mainly the difference of noise reduction methods, and the active noise reduction earphone generates reverse sound waves equal to external noise through a noise reduction system of the earphone, so that the noise reduction effect is realized. The passive noise reduction earphone mainly forms a closed space by surrounding ears, or noise insulation materials such as silica gel earplugs are adopted to achieve the noise reduction effect. The headset with the noise reduction function in this embodiment has dual noise reduction effects, and is realized through an active noise reduction system, and is provided with a flexible sound insulation pad for covering ears at the position of the horn base 50.

The active noise reduction needs to be implemented by a noise reduction module built in the earphone, which includes a microphone, i.e. the noise reduction microphone 10, for receiving external noise, and sending the external noise to the main board via an internal circuit for data calculation, and adding sound wave "in reverse phase" with the external noise while the earphone plays music, so as to cancel the external noise. Active noise reduction is classified into three types of noise reduction, namely feedforward noise reduction, feedback noise reduction, and a combination of feedforward and feedback noise reduction. The sealing and waterproof structure in this embodiment is designed for the feedforward noise reduction system, and seals the connecting line of the noise reduction microphone 10 and the connecting line of the speaker body 20 at the threading position with the speaker cover 40 and the speaker base 50.

In the prior art, the connecting line of the noise reduction microphone 10 and the connecting line of the speaker body 20 are of a split structure, that is, the connecting lines of the noise reduction microphone 10 and the speaker body 20 are not a whole, so that a plurality of sealing structures are required to be designed at the threading positions of the speaker cover 40 and the speaker base 50. For example, when the number of the noise reduction microphones 10 is three and the number of the speaker bodies 20 is one, 4 × 2 connecting lines are required in total, and therefore 8 threading positions need to be sealed, which is extremely complicated in process. Therefore, in this embodiment, the connection line between the noise reduction microphone 10 and the speaker body 20 is firstly improved, all connection lines are integrated on the added flexible circuit board 30, and then the flexible circuit board 30 is electrically connected with the noise reduction microphone 10 and the speaker body 20 respectively, so that the connection line between the noise reduction microphone 10 and the speaker body 20 is integrated into an integral structure, thereby facilitating the subsequent sealing operation.

The Flexible Circuit board 30 (hereinafter referred to as a Flexible Printed Circuit, FPC for short) has dual functions of a conductive Circuit and an insulating base plate, and can replace complicated wiring to realize electrical connection between elements in a Circuit. The flexible circuit board 30 is generally flexible and flexible compared to a Printed Circuit Board (PCB) in that it is typically located in a link that requires repeated flexing and some small parts, such as the portion of the flip phone that is bent over, the portion of the printer that links to the print head, and various modules.

The horn base 50 and the horn cover 40 cover and close to form an accommodating cavity for accommodating the noise reduction microphone 10 and the horn body 20, the covering part of the horn base 50 and the horn cover 40 is provided with a spigot structure 60, sealant is coated in the spigot structure 60, and the spigot structure 60 is further provided with a first avoiding groove 51 for penetrating out of the flexible circuit board 30.

The horn cover 40 is of a barrel-like structure, covers the upper surface of the horn base 50 to form an accommodating cavity, and the noise reduction microphone 10 and the horn body 20 are fixedly arranged in the accommodating cavity. The spigot end face of the horn cover 40 and the horn base 50 corresponding to the position are provided with the spigot structure 60, the noise reduction microphone 10 and the horn body 20 are positioned through the spigot structure 60, the spigot structure 60 is further provided with a first avoiding groove 51, and the flexible circuit board 30 connected with the noise reduction microphone 10 and the horn body 20 penetrates out of the accommodating cavity through the first avoiding groove 51. After the noise reduction microphone 10, the speaker body 20, the flexible circuit board 30, the speaker cover 40, the speaker base 50 and other components are assembled, sealant is coated along one circle of the seam allowance structure 60 through a glue dispensing process to seal the accommodating cavity.

In the sealing waterproof structure in the embodiment, the flexible circuit board 30 is arranged to be electrically connected with the noise reduction microphone 10 and the loudspeaker body 20 respectively to replace a plurality of split connecting wires, so that the external circuits of the noise reduction microphone 10 and the loudspeaker body 20 are integrated into a whole, the sealing structure only needs to be designed for one flexible circuit board 30, and the processing steps only need to be operated for one flexible circuit board 30, so that the structural design cost is reduced, the workload of the sealing process is reduced, and the production efficiency is improved; by designing the seam allowance structure 60 at the joint of the horn cover 40 and the horn base 50 and coating the sealant in the seam allowance structure 60, the accommodating cavity formed by the horn cover 40 and the horn base 50 can be effectively sealed, so that a good waterproof effect is formed on the noise reduction microphone 10 and the horn body 20 in the cavity, and the protectiveness to other components in the cavity is further enhanced; adopt this waterproof sealing structure's headphone, water-proof effects is outstanding, and life is longer.

The seam allowance structure 60 is used for limiting the position of the covering connection part of the horn base 50 and the horn cover 40, limiting the position of the horn cover 40 on the horn base 50, and preventing the horn cover 40 from being moved randomly to generate a break difference. That is, the horn cover 40 is accurately positioned on the horn base 50, thereby facilitating the dispensing operation.

Alternatively, the design of the spigot structure 60 can be varied, and has stepped male and female spigots, which can be separately provided on the horn base 50 and the horn cover 40.

In one embodiment, the spigot structure 60 includes a male spigot 61 and a female spigot 62, wherein the cross-sectional shape of the male spigot 61 is semicircular, the cross-sectional shape of the corresponding female spigot 62 is also semicircular, and the shapes enclosed by the male spigot 61 and the female spigot 62 are also adapted to enable the two to be accurately inserted.

The male seam allowance 61 is disposed on the end face of the horn cover 40, and the female seam allowance 62 is disposed at the corresponding position of the horn base 50. It is understood that the male and female spigots 61 and 62 may be provided on the base body interchangeably, that is, the female spigot 62 is provided on the end face of the bell end 40 and the male spigot 61 is provided at the corresponding position of the bell base 50.

The opening position of the first avoiding groove 51 may be any one of the male and female stoppers 61 and 62, and the specific opening position is not limited as long as the first avoiding groove can penetrate through the flexible circuit board 30 without affecting the conductive performance of the flexible circuit board 30.

As shown in fig. 2 to 3, preferably, in a preferred structure, the male notch 61 is disposed on the horn cover 40, the female notch 62 is disposed on the horn base 50, and as shown in fig. 4, the first avoiding groove 51 is disposed on the female notch 62, so that the flexible circuit board 30 can fall into the first avoiding groove 51 under the natural state by gravity, and the assembly process before dispensing is easier.

As shown in fig. 2, in an embodiment, the speaker base 50 further has a dam 53 surrounding the outer periphery of the concave seam 62 for blocking the sealant, and the dam 53 is opened with a second avoiding groove 52 for penetrating out of the flexible circuit board 30.

In order to further reduce the difficulty of the sealing process and improve the production efficiency, a dam 53 structure for gathering sealant can be designed, when the sealant is dispensed, the sealant is more easily gathered at the seam allowance structure 60, the condition of a dispensing blind area caused by the flowing of the sealant is avoided, and the yield of products is further improved.

As shown in fig. 4, in an embodiment, a fixing groove 54 for fixing the flexible circuit board 30 is formed at a position of the horn base 50 located inside the horn cover 40, and a limiting block 55 for fixing the flexible circuit board 30 is disposed at a position located outside the horn cover 40.

Before carrying out some glue operations, need assemble each part, for convenient quick location, fixed each spare part, need design card solid structure. Therefore, for the flexible circuit board 30, in the area inside the horn cover 40, the horn base 50 is provided with a fixing groove 54 for fixing the flexible circuit board 30; in the area outside the horn cover 40, along the guide route of the second avoiding groove 52, the horn base 50 is provided with a stopper 55 for fixing the flexible circuit board 30, and the flexible circuit board 30 can be restricted by the area formed by the plurality of stoppers 55.

As shown in fig. 6, in order to assemble the horn body 20 on the horn base 50, so that the horn body 20 is more easily limited and fixed, in an embodiment, the horn base 50 further has a horn mounting groove 56, and the horn body 20 is clamped in the horn mounting groove 56.

As shown in fig. 5, the flexible circuit board 30 has a plurality of connectors at a portion inside the horn cover 40 for connecting the horn body 20 and the noise reduction microphone 10, respectively. Specifically, when the horn body 20 is connected, the flexible circuit board 30 is provided with the tin through hole 31, and is welded to the horn body 20 through the tin through hole 31, so that the circuit of the horn body 20 is conducted with the circuit of the flexible circuit board 30.

When the noise reduction microphone 10 is connected, the flexible circuit board 30 is connected to the noise reduction microphone 10 through a patch, so that the circuit of the noise reduction microphone 10 is conducted with the circuit of the flexible circuit board 30.

The portion of the flexible circuit board 30 outside the horn cover 40 has only one connector, which is connected to the main board through a connector. That is, the end of the flexible circuit board 30 extending out of the speaker cover 40 is electrically connected to the motherboard.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The utility model provides a sealed waterproof construction, includes and falls miaow (10) and loudspeaker body (20) of making an uproar, its characterized in that still includes:

the flexible circuit board (30), the flexible circuit board (30) is respectively and electrically connected with the noise reduction microphone (10) and the loudspeaker body (20);

a horn cover (40);

loudspeaker base (50), loudspeaker base (50) with loudspeaker lid (40) lid closes and forms the holding chamber, be used for holding fall make an uproar miaow (10) with loudspeaker body (20), loudspeaker base (50) with the lid of loudspeaker lid (40) closes the department and sets up tang structure (60), scribble sealed glue in tang structure (60), tang structure (60) are still offered and are used for wearing out first groove (51) of dodging of flexible circuit board (30).

2. The waterproof seal structure according to claim 1, wherein the spigot structure (60) includes a male spigot (61) and a female spigot (62), the male spigot (61) being provided on one of the horn base (50) and the horn cover (40), and the female spigot (62) being provided on the other.

3. The structure of claim 2, wherein the male seam allowance (61) is disposed on the horn cover (40), the female seam allowance (62) is disposed on the horn base (50), and the first avoiding groove (51) is opened on the female seam allowance (62).

4. The waterproof and hermetic sealing structure according to claim 3, wherein the speaker base (50) further has a dam (53) surrounding the outer periphery of the female opening (62) for blocking sealant, and the dam (53) is opened with a second avoiding groove (52) for penetrating out of the flexible circuit board (30).

5. The sealing and waterproof structure according to claim 1, wherein a fixing groove (54) for fixing the flexible circuit board (30) is formed in a position of the horn base (50) located inside the horn cover (40), and a limiting block (55) for fixing the flexible circuit board (30) is arranged in a position of the horn base (50) located outside the horn cover (40).

6. The structure of claim 1, wherein the horn base (50) is further provided with a horn mounting groove (56).

7. The sealing and waterproof structure according to claim 1, wherein the flexible circuit board (30) is provided with a tin-permeable hole (31), and the flexible circuit board is welded with the horn body (20) through the tin-permeable hole (31).

8. The hermetically sealed and waterproof construction according to claim 1, characterised in that the flexible circuit board (30) is connected to the noise reducing microphone (10) by means of a patch.

9. The structure of claim 1, wherein the end of the flexible circuit board (30) extending out of the horn cover (40) is electrically connected to a main board.

10. A headphone characterized by comprising the waterproof sealing structure according to any one of claims 1 to 9.

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