Earphone charging box structure and earphone charging box

Abstract

The utility model discloses an earphone charging box structure and an earphone charging box, the earphone charging box structure comprises a lower housing, a circuit board assembly and a fixing member, the lower housing is movably connected with the fixing member, the circuit board assembly comprises a PCBA board and an FPC board electrically connected with the PCBA board, the PCBA board and the FPC board are respectively connected with the bottom surface of the fixing member, and the fixing member is movably connected with the lower housing. An edge part is arranged on the periphery of the bottom surface of the fixing piece, a plurality of first grooves and a plurality of second grooves are formed in the edge part, a step part is arranged on the periphery of the inner wall of the lower shell, a plurality of first convex parts and a plurality of second convex parts are arranged on the step part, positioning grooves are oppositely formed in the inner wall of the edge part, and a plurality of abutting parts are arranged on the top surface of the lower shell at intervals; connection is achieved through cooperation of the first protruding part and the first groove and clamping of the second protruding part and the second groove, the assembling process is simplified, limitation of operation space in practical application is avoided, and reliability of fixation between the FPC board and the lower shell is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of TWS earphones, in particular to an earphone charging box structure and an earphone charging box. Background Art

[0002] As sports Bluetooth earphones, TWS (True Wireless Stereo) earphones are now widely used. Since they need to have characteristics such as small size, light weight, and long battery life, more stringent requirements are put forward for the structural design and assembly process of TWS earphones.

[0003] However, in terms of the current technical situation, in TWS earphones, the FPC board (Flexible Printed Circuit Board) is fixed to the lower shell of the charging box with screws. In this fixing method, there is a very small operating space between the FPC board and the lower shell of the charging box. The problems brought about are relatively obvious: on the one hand, it is extremely inconvenient to perform related operations; on the other hand, during the assembly process, after the FPC board is fixed to the fixing part first, the situation of too small operating space can easily cause the screws to slip or become loose, and the slipping or loosening of the screws will reduce the reliability of the entire fixing structure, and ultimately have an adverse impact on the performance of the product. Summary of the Utility Model

[0004] In view of the above situation, it is necessary to provide an earphone charging box structure and an earphone charging box for the problems of inconvenient fixing method and easy fixing instability between the FPC board and the lower shell of the charging box in the prior art.

[0005] An earphone charging box structure includes a lower shell, a circuit board assembly, and a fixing part. The lower shell is movably connected to the fixing part. The circuit board assembly includes a PCBA board and an FPC board electrically connected to the PCBA board. The PCBA board and the FPC board are respectively connected to the bottom surface of the fixing part. The periphery of the bottom surface of the fixing part is provided with an edge part, and several first grooves and several second grooves are provided on the edge part. The periphery of the inner wall of the lower shell is provided with a step part, and several first protrusions and several second protrusions are provided on the step part. The positions of the first protrusions correspond to those of the first grooves, and the positions of the second protrusions correspond to those of the second grooves. Positioning grooves are oppositely arranged on the inner wall of the edge part for fixing the bottom of the FPC board. Several abutting parts are arranged at intervals on the top surface of the lower shell for abutting against the top of the FPC board.

[0006] Advantages of the Utility Model:

[0007] In the specific structural design of the present utility model, the PCBA board is precisely fixed to the bottom surface of the fixing member to ensure the stability and reliability of the entire circuit system. Among them, the FPC board, as a key connecting component, has one end establishing an effective electrical connection with the PCBA board and simultaneously achieving a firm connection with the bottom surface of the fixing member through a specific fixing process; the other end of the FPC board has its bottom placed in the positioning groove, and through the precise dimensions and shape constraints of the positioning groove, precise positioning of the FPC board in this direction is achieved; at the same time, its top closely abuts against the abutting portion, forming a reliable fixing support, effectively preventing possible displacement or loosening of the FPC board during use. In addition, the edge portion of the FPC board is carefully adapted to the step portion, and this adaptation structure further improves the connection tightness and stability between the FPC board and the fixing member;

[0008] During the assembly process, an efficient snap-fitting and fixing method is adopted between the lower shell and the fixing member. Specifically, it is achieved through the precise cooperation of the first convex portion and the first groove, and the tight snap-fitting of the second convex portion and the second groove. This snap-fitting structure design not only simplifies the assembly process and improves production efficiency, but also is not limited by the operating space in practical applications, can successfully complete the assembly work in various complex environments, and fully ensures the reliability of the fixation between the FPC board and the lower shell.

[0009] Furthermore, an LED lamp bead is provided at one end of the FPC board away from the PCBA board, the periphery of the LED lamp bead is enclosed by a light-shielding cotton, a light guide column is provided on the side of the light-shielding cotton facing away from the LED lamp bead, the position of the light guide column corresponds to that of the LED lamp bead, and one end of the light guide column away from the light-shielding cotton is connected to the lower shell.

[0010] Furthermore, through holes penetrating the light-shielding cotton are provided on the light-shielding cotton, and the LED lamp bead and the light guide column are located at opposite ends of the through hole.

[0011] Furthermore, fixing grooves are further provided on the peripheral side of the inner wall of the lower shell, and the fixing grooves are used to fix the light guide column.

[0012] Furthermore, two accommodating spaces are formed by the concave top surface of the fixing member at intervals, and the accommodating spaces are used to accommodate the earphones.

[0013] Furthermore, reinforcing ribs are also provided on the inner wall of the lower shell.

[0014] On the other hand, the present utility model provides an earphone charging box, including the earphone charging box structure as described above, and the earphone charging box further includes an upper shell, and the upper shell is movably connected to the lower shell. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Structural schematic diagram of the earphone charging box structure of the present invention;

[0017] Figure 2 Structural schematic of the circuit board assembly and the fixing member of the present invention Figure 1 ;

[0018] Figure 3 Structural schematic of the circuit board assembly and the fixing member of the present invention Figure 2 ;

[0019] Figure 4 Structural schematic diagram of the lower shell of the present invention.

[0020] In the figure: 1. Lower shell; 11. Step portion; 111. First convex portion; 112. Second convex portion; 12. Abutting portion; 13. Fixing groove; 14. Reinforcing rib; 2. Circuit board assembly; 21. PCBA board; 22. FPC board; 3. Fixing member; 31. Edge portion; 311. First groove; 312. Second groove; 32. Positioning groove; 33. Accommodating space; 4. Light-shielding cotton; 5. Light guide column.

[0021] The following will further illustrate the embodiments of the present invention with reference to the drawings. Specific embodiments

[0022] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present invention, and should not be construed as a limitation of the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In addition, the terms "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0025] A headphone charging case structure, as Figure 1 and Figure 2 shown, includes a lower housing 1, a circuit board assembly 2, and a fixing member 3.

[0026] Specifically, as Figures 1 to 4 shown, the lower housing 1 is snap-connected to the fixing member 3. The periphery of the bottom surface of the fixing member 3 is provided with an edge portion 31. The edge portion 31 is provided with a plurality of first grooves 311 and a plurality of second grooves 312. The periphery of the inner wall of the lower housing 1 is provided with a step portion 11. The step portion 11 is provided with a plurality of first protrusions 111 and a plurality of second protrusions 112. The positions of the first protrusions 111 correspond to those of the first grooves 311, and the positions of the second protrusions 112 correspond to those of the second grooves 312. Opposite inner walls of the edge portion 31 are both provided with positioning grooves 32 for fixing the bottom of the FPC board 22. The top surface of the lower housing 1 is provided with a plurality of abutting portions 12 at intervals for abutting against the top of the FPC board 22. The top surface of the fixing member 3 is concavely formed with two accommodating spaces 33 arranged at intervals for accommodating the headphones. The peripheral side of the inner wall of the lower housing 1 is further provided with a fixing groove 13 for fixing the light guide column 5. The inner wall of the lower housing 1 is further provided with reinforcing ribs 14. First, the PCBA board 21 is accurately fixed to the bottom surface of the fixing member 3 to ensure the stability and reliability of the entire circuit system. The bottom of the FPC board 22 is fixed in the positioning groove 32. Through the precise dimensions and shape constraints of the positioning groove 32, accurate positioning of the FPC board 22 in this direction is achieved. Then, the edge portion 31 is abutted against the step portion 11, and the lower housing 1 and the fixing member 3 are mutually pressed, so that the first protrusions 111 and the first grooves 311, and the second protrusions 112 and the second grooves 312 are respectively snap-connected. The snap-connection structure design not only simplifies the assembly process but also improves the production efficiency. At this time, the abutting portions 12 abut against the top of the FPC board 22, forming a reliable fixing support, effectively preventing possible displacement or loosening of the FPC board 22 during use, and moreover, it is not limited by the operating space in actual applications, can successfully complete the assembly work in various complex environments, and fully ensures the reliability of the fixation between the FPC board 22 and the lower housing 1; one end of the light guide column 5 is away from the light-shielding cotton 4 and is firmly fixed in the fixing groove 13 through the back glue, ensuring the stability of the light guide column 5. The reinforcing ribs 14 strengthen the structural strength of the lower housing 1.

[0027] Specifically, the circuit board assembly 2 includes a PCBA board 21 and an FPC board 22 electrically connected to the PCBA board 21. The PCBA board 21 and the FPC board 22 are respectively connected to the bottom surface of the fixing member 3. An LED lamp bead (not shown) is provided at one end of the FPC board 22 away from the PCBA board 21. The periphery of the LED lamp bead is enclosed by a light-shielding cotton 4. A light guide column 5 is provided on the side of the light-shielding cotton 4 facing away from the LED lamp bead. The light guide column 5 corresponds to the position of the LED lamp bead. One end of the light guide column 5 away from the light-shielding cotton 4 is connected to the lower housing 1. The light-shielding cotton 4 is provided with a through hole (not shown) penetrating the light-shielding cotton 4. The LED lamp bead and the light guide column 5 are located at opposite ends of the through hole. It should be noted that the LED lamp beads are divided into two types, representing different colors respectively, for indicating different working states of the earphone, namely the charging state and the full charge state. The light of these LED lamp beads is projected onto the light guide column 5 through the through hole. The other end of the light guide column 5 is away from the light-shielding cotton 4 and is connected to the lower housing 1. Therefore, the working state of the earphone can be clearly identified through the lower housing 1.

[0028] In the present utility model, in the specific structural design of the present utility model, the PCBA board 21 is precisely fixed to the bottom surface of the fixing member 3 to ensure the stability and reliability of the entire circuit system. Among them, as a key connecting component, one end of the FPC board 22 establishes an effective electrical connection with the PCBA board 21, and at the same time, it is firmly connected to the bottom surface of the fixing member 3 through a specific fixing process; the other end of the FPC board 22 is placed at the bottom in the positioning groove 32. Through the precise dimensions and shape constraints of the positioning groove 32, the precise positioning of the FPC board 22 in this direction is achieved; at the same time, its top is closely abutted against the abutting portion 12, forming a reliable fixed support, effectively preventing the FPC board 22 from displacement or loosening that may occur during use. In addition, the edge portion 31 of the FPC board 22 is carefully adapted to the step portion 11. This adapted structure further improves the connection tightness and stability between the FPC board 22 and the fixing member 3;

[0029] During the assembly process, an efficient snap-fit fixing method is adopted between the lower housing 1 and the fixing member 3. Specifically, it is achieved through the precise cooperation of the first convex portion 111 and the first concave groove 311, and the tight snap-fit of the second convex portion 112 and the second concave groove 312. This snap-fit structure design not only simplifies the assembly process and improves production efficiency, but also is not limited by the operating space in practical applications, can complete the assembly work smoothly in various complex environments, and fully ensures the reliability of the fixation between the FPC board 22 and the lower housing 1.

[0030] On the other hand, the present utility model provides an earphone charging box, including the earphone charging box structure as described above. The earphone charging box further includes an upper housing (not shown), and the upper housing is rotatably connected to the lower housing 1.

[0031] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An earphone charging box structure, characterized in that: It includes a lower shell, a circuit board assembly and a fixing part, the lower shell is movably connected to the fixing part, the circuit board assembly includes a PCBA board and an FPC board electrically connected to the PCBA board, the PCBA board and the FPC board are respectively connected to the bottom surface of the fixing part, the periphery of the bottom surface of the fixing part is provided with an edge portion, the edge portion is provided with a plurality of first grooves and a plurality of second grooves, the periphery of the inner wall of the lower shell is provided with a step portion, the step portion is provided with a plurality of first convex portions and a plurality of second convex portions, the first convex portion corresponds to the position of the first groove, the second convex portion corresponds to the position of the second groove, the opposite inner walls of the edge portion are provided with positioning grooves, the positioning grooves are used to fix the bottom of the FPC board, and the top surface of the lower shell is provided with a plurality of abutting portions at intervals, the abutting portions are used to abut against the top of the FPC board.

2. The earphone charging box structure according to claim 1, characterized in that: An LED lamp bead is arranged at one end of the FPC board away from the PCBA board, and the surrounding side of the LED lamp bead is surrounded by shading cotton. A light guide column is arranged on a side of the shading cotton facing away from the LED lamp bead, and the light guide column corresponds to the position of the LED lamp bead. The end of the light guide column away from the shading cotton is connected to the lower shell.

3. The earphone charging box structure according to claim 2, characterized in that: The shading cotton is provided with a through hole penetrating the shading cotton, and the LED lamp bead and the light guide column are located at two opposite ends of the through hole.

4. The earphone charging box structure according to claim 3, characterized in that: A fixing groove is also provided on the circumferential side of the inner wall of the lower shell body, and the fixing groove is used to fix the light guide column.

5. The earphone charging box structure according to claim 1, characterized in that: The top surface of the fixing member is concave to form two spaced-apart accommodating spaces, and the accommodating spaces are used to accommodate earphones.

6. The earphone charging box structure according to claim 1, characterized in that: The inner wall of the lower shell is also provided with reinforcing ribs.

7. An earphone charging box, characterized in that: It comprises the earphone charging box structure as described in any one of claims 1-6, and the earphone charging box also comprises an upper shell, and the upper shell is movably connected to the lower shell.

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