Neckband earphone with segmented FPC molding connection and molding connection method thereof

Abstract

The present invention relates to the technical field of neckband earphones, and specifically discloses a neckband earphone with segmented FPC molded connection and a molding connection method thereof. It comprises two side shells, the ends of the two side shells are connected by a connector to form a neckband body, an A-end FPC is provided on the connector, and the two ends of the A-end FPC are respectively inserted into the ends of the two side shells, the surface of the neckband body is covered with silicone, and the silicone is provided with an upper cover port corresponding to the shell opening, an L-end FPC and an R-end FPC are respectively provided in the two side shells, and the two ends of the A-end FPC are respectively connected to the L-end FPC and the R-end FPC, and the silicone is provided with an upper cover to close the upper cover port, and the components for power supply and function control in the two side shells conduct electrical signals through the A-end FPC, the L-end FPC and the R-end FPC. This solution uses FPC to replace the multi-core wire connection on the market, thereby reducing the occurrence of line short circuits. The structure of segmented FPC connection is adopted to optimize the molding silicone mold and improve the product yield.

Description

Technical Field

[0001] The invention relates to the technical field of neckband earphones, and in particular discloses a neckband earphone with segmented FPC molding connection and a molding connection method thereof. Background Art

[0002] Neckband headphones are a common type of Bluetooth headphones. Compared to wireless Bluetooth headphones, neckband headphones have an additional neck strap to hang around the neck, which prevents the headphones from slipping off and being lost during use. Therefore, neckband headphones are very popular among sports enthusiasts.

[0003] The current neckband earphone structure is mainly composed of a battery box, a control box, a neckband cable, and an earpiece. For example, a wireless earphone disclosed in application number 202023160041.7 has a battery box 2 and a wire control box 3 on both sides of the earphone body 1, respectively. The battery box 2 and the wire control box 3 are connected in the middle by a connecting line 4. The middle part of the connecting line 4 is covered with a neck cover 19, which is composed of a wear-resistant cover 20 and a sponge breathable cover 21. The wear-resistant cover 20 is located outside the sponge breathable cover 21, and both the wear-resistant cover 20 and the sponge breathable cover 21 are provided with a plurality of ventilation holes.

[0004] The neckband body of existing neckband headphones of this type is mostly a core wire structure, and the outside is covered with wear-resistant materials such as silicone. However, due to long-term use of neckband headphones, the core wire inside the neckband will be bent and damaged, resulting in a short circuit in the neckband headphones, which is not conducive to the service life of the neckband headphones. Therefore, it is necessary to develop a new neckband structure to replace the existing core wire neckband structure. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a neckband earphone with segmented FPC molded connection and a molding connection method thereof.

[0006] On the one hand, the present invention discloses a neckband earphone with segmented FPC molded connection, which adopts the following technical solution:

[0007] A neckband headset with a segmented FPC molded connection comprises: two side shells, each with an opening on each side, the shells on both sides are used to accommodate components for power supply and function control, the ends of the shells on both sides are connected by a connector to form a neckband body, the connector is provided with an A-end FPC, the two ends of the A-end FPC are respectively inserted into the ends of the shells on both sides, the surface of the neckband body is covered with silicone, the silicone is provided with an upper cover port corresponding to the shell openings, the shells on both sides are respectively provided with an L-end FPC and an R-end FPC, the two ends of the A-end FPC are respectively connected to the L-end FPC and the R-end FPC, the silicone is provided with an upper cover to close the upper cover port, and the components for power supply and function control in the shells on both sides conduct electrical signals through the A-end FPC, L-end FPC and R-end FPC.

[0008] Preferably, the connecting member includes a steel bar, which connects the housings at both sides. A back cover is provided on one side of the steel bar, and the A-end FPC is clamped between the steel bar and the back cover.

[0009] Further preferably, a connecting block is provided at the end of the shell, the steel bar is fixed on the connecting block, the A-end FPC is arranged on the side of the steel bar away from the connecting block, and the back cover is connected to the connecting block and clamps the A-end FPC between the steel bar and the back cover.

[0010] Further preferably, a first accommodating groove is provided on the connecting block, the back cover is accommodated in the first accommodating groove and closes the opening of the first accommodating groove, the end of the shell is provided with an FPC channel connected to the first accommodating groove, and the two ends of the A-end FPC pass through the FPC channel and enter the shell.

[0011] Preferably, the upper cover is provided with a plurality of thermal melt posts, the shell is provided with thermal melt post slots for corresponding insertion of the thermal melt posts, and the L-end FPC and the R-end FPC are passed through the plurality of thermal melt post slots.

[0012] Preferably, the L-end FPC and the R-end FPC are provided with deformation sections formed by bending.

[0013] Preferably, both ends of the A-end FPC are connected to the L-end FPC and the R-end FPC through a BTB connector.

[0014] On the other hand, the present invention also discloses a segmented FPC molding connection method for neckband headphones, which adopts the following technical solution:

[0015] A segmented FPC molding connection method for a neckband headset, the method comprising the following steps:

[0016] (1) Assemble the two side shells and fix them to each other through connectors;

[0017] (2) Install the A-end FPC into the connector position and insert the A-end FPC into the ends of the shells on both sides;

[0018] (3) placing the component in a silicone mold and injecting the silicone into the mold, leaving an upper cover port on the injection-molded silicone;

[0019] (4) Take out the product, clean the burrs and process it;

[0020] (5) Install the L-end FPC and the R-end FPC into the housings on both sides respectively and connect them to the two ends of the A-end FPC, so that the components used for power supply and function control in the housings on both sides conduct electrical signals through the A-end FPC, the L-end FPC and the R-end FPC;

[0021] (6) An upper cover is assembled on the silica gel to close the upper cover port.

[0022] Preferably, in step (1) and step (2), the shells on both sides are assembled and fixed by steel bars, the A-end FPC is installed into one side of the steel bar, and the A-end FPC is inserted into the end parts of the shells on both sides. Then, a back cover is provided on the side of the A-end FPC away from the steel bar, and the back cover and the shell are fixed with glue by hot melt columns, so that the A-end FPC is clamped between the steel bar and the back cover.

[0023] Preferably, in step (6), the upper cover and the shell are fixed by hot melt columns, and the upper cover is assembled and fixed on the neckband by gluing and maintaining pressure from top to bottom.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. This solution uses FPC to replace the multi-core wire connection on the market, which not only reduces the occurrence of line short circuit, but also greatly reduces the structural space, optimizes the product structure, reduces the welding process of multi-core wires, and improves production efficiency;

[0026] 2. This solution adopts a segmented FPC connection structure. On the one hand, the middle A-end FPC serves as a BTB connector, realizing electrical and functional connectivity between the battery box and the control box at both ends of the neckband. On the other hand, the A-end FPC can be assembled into the shell in the early stage and silicone molded into a semi-finished product. The segmented L / R-end FPC can be connected after the silicone injection molding is completed. This can make the silicone injection molding process smoother, thereby optimizing the silicone molding mold, reducing production costs, and also facilitating the subsequent arrangement of the FPC in the shell, reducing the risk of disconnection and short circuit, and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a schematic diagram of the overall structure of a neckband earphone with segmented FPC molding connection according to this embodiment;

[0028] Figure 2 This is a schematic diagram of the structure of a neckband earphone with segmented FPC molding connection according to this embodiment;

[0029] Figure 3 This is a schematic diagram of the disassembly of the two side shells of a neckband earphone with segmented FPC molding connection according to this embodiment;

[0030] Figure 4 for Figure 3 A magnified view of;

[0031] Figure 5 This is a schematic diagram of the structure of the A-end FPC, L-end FPC and R-end FPC of a segmented FPC molding connection in this embodiment;

[0032] Figure 6 This is a schematic structural diagram of a neckband earphone with segmented FPC molding connection before silicone molding in this embodiment;

[0033] Figure 7 This is a schematic diagram of the structure of the neckband earphones with segmented FPC molding connection after silicone molding in this embodiment.

[0034] Description of Figure Numbers:

[0035] 1. Housing; 11. Connecting block; 12. Threaded hole; 13. First accommodating groove; 14. Second accommodating groove; 15. FPC channel; 16. Hot melt column slot; 2. Steel bar; 21. Fixing hole; 3. Screw; 4. Back cover; 51. A-end FPC; 52. L-end FPC; 53. R-end FPC; 54. BTB connector; 55. Deformation section; 6. Silicone; 7. Earpiece; 8. Top cover. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] This embodiment discloses a neckband earphone with segmented FPC molding connection, referring to Figure 1-7The neckband body comprises a battery compartment, a control box, a neckband body, and an earpiece 7. The battery compartment and control box are specifically formed as two side shells 1, made of plastic and having an opening. The two shells 1 house components for power supply and function control. The ends of the two shells 1 are connected by a connector to form the neckband body. Furthermore, the connector is provided with an A-end FPC 51, the two ends of which penetrate into the ends of the two shells 1. The neckband body is covered with silicone rubber 6, which has a top cover port corresponding to the opening of the shell 1. The two shells 1 are provided with an L-end FPC 52 and an R-end FPC 53, respectively. The two ends of the A-end FPC 51 are connected to the L-end FPC 52 and the R-end FPC 53, respectively, via a BTB connector 54. The silicone rubber 6 is provided with a top cover 8 for sealing the top cover port. Electrical signals are transmitted to the power supply and function control components in the two shells 1 through the A-end FPC 51, L-end FPC 52, and R-end FPC 53.

[0038] Specifically, refer to Figure 2 、 Figure 3 The connecting parts specifically include a steel bar 2 and a screw 3. The steel bar 2 is made of an elastically shaped material. In addition, a connecting block 11 is integrally formed on the ends of the two side shells 1. The connecting block 11 is provided with a threaded hole 12. Both ends of the steel bar 2 are provided with a fixing hole 21. The screws 3 pass through the fixing holes 21 on the steel bar 2 and connect with the threaded holes 12 on the connecting block 11, thereby assembling and fixing the two side shells 2. The A-end FPC 51 is arranged on the side of the steel bar 2 away from the connecting block 11. The connecting block 11 is also fixed with a back cover 4, so that the A-end FPC 51 is clamped between the steel bar 2 and the back cover 4. Among them, the back cover 4 is made of plastic material, and a hot melt column is provided on the connecting block 11. The back cover 4 is provided with a connecting hole for inserting the hot melt column. The back cover 4 and the shell 1 are fixed with glue through the hot melt column, so that the A-end FPC is firmly clamped between the steel bar 2 and the back cover 4.

[0039] By providing the steel bar 2, on the one hand, it connects the two side shells 1 to form the neckband body, meeting the functional requirements; on the other hand, the user can change the curvature of the steel bar 2 by turning its curvature, so that the two ends of the neckband can have a certain degree of expansion, thereby meeting the needs of local expansion of the neckband; in addition, the cooperation between the steel bar 2 and the back cover 4 can also make the A-end FPC 51 stably installed between the two side shells, which helps the subsequent silicone 6 molding process to proceed more smoothly.

[0040] Further, refer to Figure 4A first receiving groove 13 for the back cover 4 to be embedded is provided on the connecting block 11. An FPC channel 15 is provided at the end of the shell 1 to communicate with the first receiving groove 13. Both ends of the A-end FPC 51 pass through the FPC channel 15 and enter the shell 1. A second receiving groove 14 is also provided at the bottom of the first receiving groove 13 of the connecting block 11. The end of the steel bar 2 is accommodated in the second receiving groove 14. The silicone 6 completely covers the steel bar 2, the connecting block 11 and the back cover 4.

[0041] By providing the first accommodating groove 13 and the second accommodating groove 14 on the connecting block 11, not only can the back cover 4 and the steel bar 2 be matched and embedded in the groove, thereby improving the assembly efficiency and fixing effect, but also the steel bar 2 can be flush with the bottom surface of the first accommodating groove 13, thereby reducing the press-fitting damage to the A-end FPC 51, and making the back cover 4 flush with the surface of the shell 1, which is beneficial to the subsequent injection molding of the silicone 6. In addition, the back cover 4 closes the opening of the first accommodating groove 13, so that the part where the A-end FPC 51 penetrates the FPC channel 15 can be completely covered by the back cover 4 and the connecting block 11, thereby avoiding the silicone material from being injected into the interior of the shell 1 during the subsequent injection molding process, thereby improving the performance quality of the neckband earphones and effectively improving the production yield rate.

[0042] In addition, a plurality of hot melt pins are provided at the bottom of the upper cover 8, and hot melt pin slots 16 for corresponding insertion of the hot melt pins are provided in the shell 1, and the L-end FPC 52 and the R-end FPC 53 are passed through the plurality of hot melt pin slots 16. The upper cover 8 not only serves as a decorative cover, but also the upper cover 8 and the shell 1 are fixed by hot ironing with hot melt pins, so the connection is more reliable and not prone to falling off. In addition, the conventional method of connecting through core wires requires manual winding between the hot melt pin slots bit by bit, and the assembly efficiency is low. This solution uses FPC to replace the core wire. Since FPC has certain shaping properties, it can be formed into the required shape during its stamping production process, which is conducive to the L-end FPC 52 and the R-end FPC 53 being quickly passed through the plurality of hot melt pin slots 16. As a preferred solution, refer to Figure 5 The L-end FPC 52 and the R-end FPC 53 are provided with a deformation section 55 formed by bending. When the neckband needs to bend to adjust the expansion curvature, the deformation section 55 allows the L-end FPC 52 and the R-end FPC 53 to follow the stretching or bending deformation, reducing the impact of the neckband bending on the FPC electrical signal connectivity.

[0043] This embodiment also discloses a segmented FPC molding connection method, which includes the following steps:

[0044] (1) Assemble and fix the two side shells 1 to each other using steel bars 2 and screws 3;

[0045] (2) Place the A-end FPC 51 at the position of the steel bar 1 and insert the A-end FPC 51 into the FPC channels 15 at the ends of the shell 1 on both sides. Then fix the back cover 4 to the connection block 11 of the shell 1 through hot melt pins, so that the A-end FPC 51 is clamped between the steel bar 2 and the back cover 4. Figure 6 As shown;

[0046] (3) Place the assembly in a silicone mold and inject silicone into the mold so that the surfaces of the shells 1 on both sides and the steel bars 2 are coated with silicone 6, and an upper cover port is left on the injection-molded silicone.

[0047] (4) Take out the product, clean the burrs, spray paint / pad printing, test / pack, and make semi-finished products for shipment, such as Figure 7 As shown;

[0048] (5) Install the L-end FPC 52 and the R-end FPC 53 into the two side housings 1 respectively and connect them to the BTB connectors 53 at both ends 51 of the A-end FPC, so that the power supply and function control components in the two side housings 1 conduct electrical signals through the A-end FPC 51, the L-end FPC 52 and the R-end FPC 53;

[0049] (6) After installing the earpiece 7 and other components, finally fix the upper cover 8 on the silicone 6 through the hot melt column, and assemble and fix the upper cover 8 on the neckband by gluing and holding pressure. Figure 1 products.

[0050] This solution replaces the existing multi-wire connections with FPCs, significantly reducing structural space, upgrading the product, and reducing soldering steps, thereby improving production efficiency. Furthermore, this solution utilizes a segmented FPC connection structure. On the one hand, the central A-end FPC 51 functions as a BTB connector, ensuring electrical and functional connectivity between the battery compartments and the control box at both ends of the neckband. On the other hand, due to its certain resilience, FPCs are difficult to maintain completely stationary when placed in a curved housing. Especially during placement in the injection mold and during the injection molding process, the FPCs can easily pop out of the pre-set position within the housing, interfering with the silicone injection molding process. In this solution, the A-end FPC 51 can be pre-assembled into the housing 1 for silicone molding to create a semi-finished product. The segmented L / R-end FPCs can be connected after silicone injection molding is complete. This streamlines the silicone injection molding process, eliminating the need for specialized components in the silicone mold to prevent FPC misalignment. This optimizes the silicone mold, reduces production costs, and facilitates subsequent FPC placement within the housing, reducing the risk of disconnection and short circuits, thereby improving product yield.

[0051] The technical solution provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A neckband earphone with segmented FPC molding connection, characterized in that: include: Two side shells, the shells on both sides have openings, the shells on both sides are used to accommodate components for power supply and function control, the ends of the shells on both sides are connected by connectors to form a neckband body, the connector is provided with an A-end FPC, the two ends of the A-end FPC are respectively inserted into the ends of the shells on both sides, the surface of the neckband body is covered with silicone, and the silicone is provided with an upper cover port corresponding to the shell opening, the shells on both sides are respectively provided with an L-end FPC and an R-end FPC, the two ends of the A-end FPC are respectively connected to the L-end FPC and the R-end FPC, the silicone is provided with an upper cover to close the upper cover port, and the components for power supply and function control in the shells on both sides conduct electrical signals through the A-end FPC, the L-end FPC and the R-end FPC; The connecting member includes a steel bar, which connects the two housings. A back cover is provided on one side of the steel bar, and the A-end FPC is clamped between the steel bar and the back cover. The L-end FPC and the R-end FPC are provided with deformation sections formed by bending.

2. The neckband earphone with segmented FPC molding connection according to claim 1, characterized in that: A connecting block is provided at the end of the shell, the steel bar is fixed on the connecting block, the A-end FPC is arranged on the side of the steel bar away from the connecting block, the back cover is connected to the connecting block and clamps the A-end FPC between the steel bar and the back cover.

3. The neckband earphone with segmented FPC molding connection according to claim 2, characterized in that: A first accommodating groove is provided on the connecting block, the back cover is accommodated in the first accommodating groove and closes the opening of the first accommodating groove, an FPC channel is provided at the end of the shell and communicates with the first accommodating groove, and both ends of the A-end FPC pass through the FPC channel and enter the shell.

4. The neckband earphone with segmented FPC molding connection according to claim 1, characterized in that: The upper cover is provided with a plurality of thermal melt posts, and the shell is provided with thermal melt post slots for corresponding insertion of the thermal melt posts. The L-end FPC and the R-end FPC are passed through the plurality of thermal melt post slots.

5. The neckband earphone with segmented FPC molding connection according to claim 1, characterized in that: The two ends of the A-end FPC are connected to the L-end FPC and the R-end FPC through a BTB connector.

6. A segmented FPC molding connection method for a neckband earphone according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: (1) Assemble the two side shells and fix them to each other through connectors; (2) Install the A-end FPC into the connector position, and insert the A-end FPC into the ends of the shells on both sides; (3) Place the component in a silicone mold and inject silicone into the mold, leaving an upper cover port on the injection-molded silicone; (4) Take out the product, clean the burrs and process it; (5) Install the L-end FPC and the R-end FPC into the housings on both sides respectively and connect them to the two ends of the A-end FPC, so that the components used for power supply and function control in the housings on both sides conduct electrical signals through the A-end FPC, the L-end FPC and the R-end FPC; (6) An upper cover is assembled on the silicone to close the upper cover port.

7. The segmented FPC molding connection method for neckband headphones according to claim 6, characterized in that: In the steps (1) and (2), the shells on both sides are assembled and fixed by steel bars, the A-end FPC is installed into one side of the steel bar, and the A-end FPC is inserted into the ends of the shells on both sides. A back cover is provided on the side of the A-end FPC away from the steel bar, and the back cover and the shell are fixed with glue by hot melt columns, so that the A-end FPC is clamped between the steel bar and the back cover.

8. The segmented FPC molding connection method for neckband headphones according to claim 6, characterized in that: In the step (6), the upper cover and the shell are fixed by hot melt pins, and the upper cover is assembled and fixed on the neckband by gluing and maintaining pressure.

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