TWS earphone charging connection structure

Abstract

This invention provides a TWS earphone charging connection structure, including a charging case assembly and two sets of earphone assemblies. The charging case assembly includes a case body with a placement plate on the top. Two earphone storage slots are formed on the top of the placement plate corresponding to the two sets of earphone assemblies, and the bottoms of the two earphone storage slots contact the two sets of earphone assemblies. Each earphone assembly includes a first shell, and a first shell is disposed within each earphone storage slot. Both the first shell and the earphone storage slot have two sets of charging holes. A charging component is disposed between the case body and the placement plate, and the charging component includes four charging connectors, each passing through one of the four charging holes. A second shell is disposed on the top of the first shell, and a charging connection component is disposed between the first shell and the second shell. This charging connection structure solves the problem of insufficient stability in traditional patch-type connections, improves charging stability, effectively prevents poor contact of the earphones within the charging case, and ensures a fast and convenient charging experience.

Description

Technical Field

[0001] This invention belongs to the field of TWS earphone technology, and more specifically, relates to a TWS earphone charging connection structure. Background Technology

[0002] With the development of technology, true wireless earbuds (TWS earbuds) have become a popular portable audio product. Compared to ordinary wired earbuds, TWS earbuds have two completely independent ear tips without any wires connecting them, making them very convenient to carry and use. However, since the two ear tips are powered directly by built-in batteries, convenient charging has always been a problem for TWS earbuds.

[0003] For example, Chinese utility model patent with patent number 202320894989.X provides a TWS earphone charging connection structure and TWS earphones. The charging connection structure is set with an injection molded part, a spring probe, a PCB circuit board and a charging pad. The PCB circuit is set inside the injection molded part. The spring probe is connected to the PCB circuit board through the charging pad. When in use, the spring pops the probe out of the through hole on one side of the injection molded part, so that it is connected to the external power source. The current is introduced into the battery on the PCB circuit board through the charging pad, which has certain practical value.

[0004] Most true wireless earbuds currently use a charging method where each earbud is inserted separately into the charging case. However, analysis of the aforementioned patents and existing technologies reveals that current earbud charging connections typically employ a patch-type connection. This means that charging contacts are located on the bottom of both the earbuds and the corresponding contacts on the bottom of the charging case's slot, with charging transmitted through direct contact between the two contacts. A significant problem with this patch-type connection is its instability; the earbuds are prone to displacement within the slot, leading to poor charging contact and charging failure. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a TWS earphone charging connection structure. In the prior art, traditional earphone charging connection structures generally use a patch-type connection method, which is not stable enough. The earphone is prone to displacement within the slot, leading to poor charging contact and charging failure.

[0006] The purpose and effect of the TWS earphone charging connection structure of the present invention are achieved by the following specific technical means:

[0007] A TWS earphone charging connection structure includes a charging case assembly and two sets of earphone assemblies. The charging case assembly includes a case body with a placement plate on the top. The placement plate has two earphone storage slots corresponding to the two sets of earphone assemblies on its top. The bottoms of the two sets of earphone storage slots contact the two sets of earphone assemblies. Each earphone assembly includes a first housing, which is disposed within the earphone storage slot. Both the first housing and the earphone storage slot have two sets of charging holes. A charging assembly is disposed between the case body and the placement plate. The charging assembly includes four sets of charging connectors, which are respectively inserted into the four sets of charging holes. A second housing is disposed on the top of the first housing, and a charging connection assembly is disposed between the first housing and the second housing.

[0008] In a preferred embodiment, the charging box assembly further includes a first mounting slot, the top of the box body is provided with the first mounting slot, and multiple sets of connecting seats are provided corresponding to the bottom of the placement plate. Each set of connecting seats has a groove, and each set of connecting seats at the bottom of the first mounting slot is provided with a first connecting post. The box body and the placement plate are connected through multiple sets of the first connecting posts.

[0009] In a preferred embodiment, the inner wall of the first mounting groove is provided with multiple sets of reinforcing ribs, the bottom of the first mounting groove is provided with a limiting groove, four sets of limiting claws are provided around the limiting groove, the charging component is engaged between the four sets of limiting claws, the charging component also includes a rechargeable battery, the rechargeable battery is engaged in the limiting groove, the top of the rechargeable battery is provided with a first PCB board, and a charging interface is provided on one side of the first PCB board.

[0010] In a preferred embodiment, an opening is provided on one side of the box corresponding to the charging interface. One end of the charging interface passes through the opening and is connected to a protective plate. The charging interface and the rechargeable battery are both electrically connected to the first PCB board. One end of each of the four sets of charging connectors is connected to the first PCB board, and the other end is connected to two sets of charging connection components respectively. A first observation hole is also provided on the top of the placement plate. A first charging indicator is also provided on the top of the first PCB board, and the top of the first charging indicator passes through the first observation hole.

[0011] In a preferred embodiment, the earphone assembly further includes a second mounting slot, the top of the first housing is provided with the second mounting slot, the bottom of the second mounting slot is provided with the two sets of charging holes, the bottom of the second mounting slot is provided with two sets of second connecting posts, the first housing and the second housing are connected by the two sets of second connecting posts, and the top of the second housing is provided with a second observation hole.

[0012] In a preferred embodiment, a retaining ring is provided at the top of the first housing, and a groove is provided at the bottom of the second housing corresponding to the retaining ring, in which the retaining ring is engaged. A sound outlet tube is provided at the bottom of the first housing, and a sound outlet head is sleeved on the sound outlet tube. An anti-slip pad is provided on the outer surface of the sound outlet head, and the anti-slip pad is made of rubber.

[0013] In a preferred embodiment, the charging connection assembly includes an earphone battery, the earphone battery is engaged between two sets of second connecting posts, a charging plate is provided at the bottom of the earphone battery, a guide plate is provided on one side of the charging plate, and two sets of connection openings are provided on the guide plate corresponding to the two sets of charging holes, and two sets of charging connectors are engaged in the two sets of connection openings respectively.

[0014] In a preferred embodiment, the charging connection assembly further includes a second PCB board, which is disposed on the top of the earphone battery. Both ends of the second PCB board are provided with connectors. The second PCB board is secured in the second mounting slot by two sets of connectors. One end of the second charging indicator passes through the second observation hole and is connected to the top of the second PCB board.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. With its charging connection assembly, the TWS earbuds are simply placed into the earbud storage slot of the charging case. Two sets of charging connectors are located at opposite ends of the inner side of the slot. These connectors pass through the corresponding charging holes on the earbuds and contact a guide plate. The guide plate has connection openings corresponding to the charging connector positions. The charging connectors pass through these openings and are fixedly connected to the guide plate. Current flows from the charging connectors into the guide plate and then through the charging plate to charge the earbud batteries. This plug-in connection method solves the instability problem of traditional surface-mount connections, improving charging stability. It effectively prevents the earbuds from shifting or making poor contact within the storage slot.

[0017] 2. The charging component and second charging indicator enable convenient charging of TWS earbuds. A rechargeable battery stores power, and when the earbuds need charging, the stored power is channeled through four charging connectors to charge the batteries in both earbuds. A second charging indicator illuminates on the earbuds when they are charging. When the rechargeable battery is low, it can be connected to an external power source via a data cable. In this case, the corresponding first charging indicator on the charging case illuminates, indicating that the battery is being charged, providing added convenience.

[0018] 3. The charging case assembly and two sets of earphone assemblies are arranged with two earphone storage slots on the placement plate corresponding to the two sets of earphone assemblies. A limiting groove and four sets of limiting claws are provided on the first mounting slot to fix the charging assembly in place, enhancing stability and structural strength. The first and second shells of the earphone assembly are connected by two sets of second connecting pillars, which enhances the overall rigidity of the shells. To further enhance structural strength, the first shell also has an annular protruding retaining ring, and the second shell has a corresponding retaining ring groove. When the two shells are joined, the retaining ring can be embedded in the retaining ring groove, improving the stability of the connection between the two shells and effectively extending the product's service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a TWS earphone charging connection structure according to the present invention;

[0020] Figure 2 This is an exploded view of a TWS earphone charging connection structure according to the present invention;

[0021] Figure 3 This is a schematic diagram of the assembled charging case assembly in a TWS earphone charging connection structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the disassembled charging case assembly in a TWS earphone charging connection structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the assembled charging components in a TWS earphone charging connection structure according to the present invention;

[0024] Figure 6 yes Figure 5 A schematic diagram of the disassembled structure;

[0025] Figure 7 This is a schematic diagram of the assembled earphone assembly in a TWS earphone charging connection structure according to the present invention;

[0026] Figure 8 yes Figure 7 A schematic diagram of the disassembled structure;

[0027] Figure 9 This is a schematic diagram of the assembled charging connection component in a TWS earphone charging connection structure of the present invention;

[0028] Figure 10 yes Figure 9 A schematic diagram of the disassembled structure.

[0029] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0030] 101. Box body; 102. Placement plate; 103. Earphone storage slot; 104. First mounting slot; 105. Connecting base; 106. First connecting post; 107. Reinforcing rib; 108. Limiting slot; 109. Limiting claw; 110. Opening; 111. Protective plate; 112. First observation hole; 201. First shell; 202. Second shell; 203. Second mounting slot; 204. Second connecting post; 205. Second observation hole; 2 06. Snap ring; 207. Sound tube; 208. Sound head; 209. Anti-slip pad; 301. Charging connector; 302. Rechargeable battery; 303. First PCB board; 304. Charging interface; 305. First charging indicator; 401. Charging hole; 402. Earphone battery; 403. Charging board; 404. Guide plate; 405. Connection opening; 406. Second PCB board; 407. Connector; 408. Second charging indicator. Detailed Implementation

[0031] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but should not be used to limit the scope of protection of the present invention.

[0032] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Example:

[0034] like Figures 1 to 10As shown, this invention provides a TWS earphone charging connection structure, including a charging case assembly and two sets of earphone assemblies. The charging case assembly includes a case body 101, with a placement plate 102 on the top of the case body 101. Two earphone storage slots 103 are formed on the top surface of the placement plate 102 corresponding to the positions of the two sets of earphone assemblies, and the bottoms of these two earphone storage slots 103 can contact the two sets of earphone assemblies. Each set of earphone assemblies includes a first housing 201, which can be placed into the corresponding earphone storage slot 103 during use. Two sets of circular charging holes 401 are formed on the inner walls of the first housing 201 and the earphone storage slots 103 at corresponding positions. A charging assembly is disposed between the charging case body 101 and the placement plate 102. This charging assembly includes four charging connectors 301, which can pass through the four charging holes 401 on the first housing 201 and the earphone storage slots 103, respectively. A second housing 202 is also provided on the top of the first housing 201, and a charging connection component is provided between the first housing 201 and the second housing 202.

[0035] Please see as follows Figure 2 Figure 3 and Figure 4 As shown, the charging case assembly also includes a first mounting groove 104, which is formed on the top of the case body 101. Multiple sets of connecting seats 105 are positioned at the bottom of the first mounting groove 104, corresponding to the bottom surface of the placement plate 102. Each connecting seat 105 has a circular groove on its top surface, and each connecting seat 105 at the bottom of the first mounting groove 104 has a cylindrical first connecting post 106. The case body 101 and the placement plate 102 are connected by these multiple sets of first connecting posts 106, achieving a locking and fixing of the case body 101 and the placement plate 102. This enhances the overall structural strength and stability of the charging case assembly, improves the stability of the earphone assembly in the earphone storage slot 103, and facilitates reliable connection.

[0036] Please see as follows Figure 4 , Figure 5 and Figure 6As shown, the inner wall of the first mounting groove 104 is also provided with multiple sets of reinforcing ribs 107, which can enhance the overall rigidity of the mounting groove. A limiting groove 108 is opened at the bottom of the first mounting groove 104, and four sets of limiting claws 109 are provided at the four openings of the limiting groove 108. A charging component is engaged between these limiting claws 109. The charging component also includes a rechargeable battery 302, which serves as the energy storage unit of the charging component, used to store electricity and connect to the charging connection component to provide charging power for the earphone battery 402 in the earphone assembly. The rechargeable battery 302 is engaged inside the limiting groove 108. A first PCB board 303 is also provided on the top of the rechargeable battery 302. A charging interface 304 is provided on one side of the first PCB board 303. When the rechargeable battery 302 is low on power, the user can insert one end of the data cable into the charging interface 304 to charge the rechargeable battery 302 using an external power source, realizing rapid charging of the internal power supply unit and ensuring the ability to continuously power the earphone.

[0037] Please see as follows Figure 5 and Figure 6 As shown, an opening 110 is provided on one side of the box 101 corresponding to the position of the charging interface 304. One end of the charging interface 304 passes through the opening 110 and is connected to a rectangular protective plate 111. The protective plate 111 is located on the outside of the box 101 and can protect the charging interface 304 from the influence of the external environment. The circuits of the charging interface 304 and the charging battery 302 are both electrically connected to the first PCB board 303 to realize charging control. The first PCB board 303 is provided with four sets of charging connectors 301. One end of each of the four sets of charging connectors 301 is electrically connected to the first PCB board 303, and the other end can be inserted into the charging connection components of the two sets of earphone assemblies to transfer the power of the rechargeable battery 302. The top of the placement plate 102 is also provided with a first observation hole 112 corresponding to the position of the first PCB board 303. The top of the first PCB board 303 is provided with a first charging indicator 305, which passes through the first observation hole 112. When the rechargeable battery 302 is being charged, the first charging indicator 305 will light up to indicate to the user that the internal rechargeable battery 302 is being charged, providing convenience to the user.

[0038] Please see as follows Figure 7 and Figure 8As shown, the headphone assembly also includes a second mounting slot 203, which is located on the top of the first housing 201 and is used to mount other internal components. Two sets of circular charging holes 401 are located on the bottom of the second mounting slot 203, corresponding to both sides. Two sets of charging connectors 301 can pass through these two sets of charging holes 401 in sequence and connect to the charging connection component circuit inside the headphone. Two sets of second connecting posts 204 are provided at the bottom of the second mounting slot 203. The first housing 201 and the second housing 202 are connected through these two sets of second connecting posts 204, thus achieving the connection between the two housings. A second observation hole 205 is located on the top of the second housing 202.

[0039] Please see as follows Figure 7 and Figure 8 As shown, to enhance the connection strength between the first housing 201 and the second housing 202 of the headphones, multiple annular protruding retaining rings 206 are provided at corresponding positions on the top edge of the first housing 201. A matching retaining groove is provided on the bottom inner wall of the second housing 202 at the position corresponding to the retaining rings 206. The retaining rings 206 can be held in this groove. When the first housing 201 and the second housing 202 are joined, the retaining rings 206 are embedded in the groove, like meshing ring gears, improving the stability of the connection. A sound outlet tube 207 is provided at the bottom of the first housing 201, and a cylindrical sound outlet head 208 is fitted onto the outer end of the sound outlet tube 207. The outer surface of the sound outlet head 208 is covered with an anti-slip pad 209 made of soft rubber, which prevents the headphones from falling out of the ears, making the headphones more secure and compact, and more comfortable to use.

[0040] Please see as follows Figure 9 and Figure 10 As shown, the charging connection assembly includes an earphone battery 402, which is held between two sets of second connecting posts 204. A rectangular charging plate 403 is welded to the bottom of the earphone battery 402 at a corresponding position. One side of the charging plate 403 is fixedly connected to a guide plate 404. The cooperation between the guide plate 404 and the charging plate 403 provides a charging path for the earphone battery 402. Two sets of circular connection openings 405 are provided on the guide plate 404 at positions corresponding to the two sets of charging holes 401. Two sets of charging connectors 301 in the charging case assembly can be respectively engaged in these two sets of connection openings 405 to achieve mechanical and electrical connection with the guide plate 404. In this way, current can flow from the two sets of charging connectors 301 of the charging assembly into the guide plate 404 and the charging plate 403 in sequence, ultimately charging the earphone battery 402. This precise plug-in connection solves the problem of instability of the traditional surface-mount connection method, improves charging stability, prevents poor contact, and ensures both fast charging and convenience.

[0041] Please see as follows Figure 9 and Figure 10As shown, the charging connection assembly also includes a second PCB board 406, with the top of the earphone battery 402 electrically connected to the second PCB board 406. Two sets of connectors 407 are symmetrically arranged at both ends of the second PCB board 406, and the second PCB board 406 is secured inside the second mounting slot 203 via these two sets of connectors 407. One end of the second charging indicator 408 passes through the second observation hole 205 at the top of the second housing 202 and is electrically connected to the top surface of the second PCB board 406. When the TWS earphones are charging, the charging status is displayed and controlled, providing great convenience for the user.

[0042] The specific usage and function of this embodiment: When using this TWS earphone charging connection structure, simply place the two earphone components into the two earphone storage slots 103 on the top of the charging case assembly to achieve fast charging. Specifically, after the two earphone components are inserted into the earphone storage slots 103, the two sets of charging connectors 301 on the charging assembly will pass through the placement plate 102 and the charging holes 401 on the first housing 201, so that both sets of charging connectors 301 are in contact with the guide plate 404. The guide plate 404 has connection openings 405 at symmetrical positions on both sides. The two sets of charging connectors 301 can be precisely aligned with these two connection openings 405 and inserted into them, achieving a stable mechanical and electrical connection with the guide plate 404. In this way, current can flow from the two sets of charging connectors 301 of the charging component into the guide plate 404, and then through the charging plate 403 to charge the earphone battery 402. This plug-in connection method achieved through the charging connector 301 solves the problem of the instability of the traditional patch connection method and improves the charging stability. It effectively prevents the earphone from shifting and making poor contact in the earphone storage slot 103, ensuring a fast and convenient charging experience.

[0043] To enable fast and convenient charging of TWS earbuds, a charging component is installed inside the charging case assembly. This component includes a rechargeable battery 302 for storing power. When charging is needed for both TWS earbuds, the power stored in the battery 302 is channeled through four charging connectors 301 on the top of the first PCB board 303 to charge the earbud batteries 402 inside each earbud assembly. A second charging indicator 408 is also provided on the TWS earbuds to indicate the charging status; it illuminates when the earbuds are charging. When the battery 302 is low on power, the user can insert one end of the data cable through the opening 110 on the case 101 into the internal charging port 304 to charge the battery 302 using an external power source. In this case, the first charging indicator 305 located at the bottom of the first observation hole 112 illuminates, indicating that the battery 302 is being charged, providing convenience for the user.

[0044] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A charging connection structure for TWS earphones, characterized in that: The device includes a charging case assembly and two sets of earphone assemblies. The charging case assembly includes a case body (101), and a placement plate (102) is provided on the top of the case body (101). The top of the placement plate (102) has two sets of earphone storage slots (103) corresponding to the two sets of earphone assemblies. The bottom of the two sets of earphone storage slots (103) contacts the two sets of earphone assemblies. Each earphone assembly includes a first housing (201), and the first housing (201) is disposed inside the earphone storage slot (103). The first housing (201) and the earphone storage slot are connected. (103) is provided with two sets of charging holes (401). A charging assembly is provided between the box body (101) and the placement plate (102). The charging assembly includes four sets of charging connectors (301), which are respectively inserted into the four sets of charging holes (401). A second shell (202) is provided on the top of the first shell (201). A charging connection assembly is provided between the first shell (201) and the second shell (202). The charging box assembly also includes a first mounting slot (104). The top of the body (101) is provided with the first mounting groove (104). The first mounting groove (104) and the bottom of the placement plate (102) are provided with multiple sets of connecting seats (105). Each set of connecting seats (105) is provided with a groove. Each set of connecting seats (105) at the bottom of the first mounting groove (104) is provided with a first connecting post (106). The box body (101) and the placement plate (102) are connected by multiple sets of the first connecting post (106). The inner wall of the first mounting groove (104) is provided with multiple A set of reinforcing ribs (107) is provided. A limiting groove (108) is opened at the bottom of the first mounting groove (104). Four sets of limiting claws (109) are provided around the limiting groove (108). The charging component is locked between the four sets of limiting claws (109). The charging component also includes a charging battery (302). The charging battery (302) is locked in the limiting groove (108). A first PCB board (303) is provided on the top of the charging battery (302). A charging interface (304) is provided on one side of the first PCB board (303).

2. The TWS earphone charging connection structure according to claim 1, characterized in that: The box body (101) has an opening (110) on one side corresponding to the charging interface (304). One end of the charging interface (304) passes through the opening (110) and is connected to a protective plate (111). The charging interface (304) and the charging battery (302) are both electrically connected to the first PCB board (303). One end of each of the four sets of charging connectors (301) is connected to the first PCB board (303), and the other end is connected to two sets of charging connection components respectively. The top of the placement plate (102) is also provided with a first observation hole (112). The top of the first PCB board (303) is also provided with a first charging indicator (305). The top of the first charging indicator (305) passes through the first observation hole (112).

3. The TWS earphone charging connection structure according to claim 1, characterized in that: The headphone assembly also includes a second mounting slot (203). The first housing (201) has the second mounting slot (203) at the top and the two sets of charging holes (401) at the bottom. The second mounting slot (203) has two sets of second connecting posts (204) at the bottom. The first housing (201) and the second housing (202) are connected by the two sets of second connecting posts (204). The second housing (202) has a second observation hole (205) at the top.

4. The TWS earphone charging connection structure according to claim 3, characterized in that: The first housing (201) is provided with a retaining ring (206) at the top, and the second housing (202) is provided with a groove at the bottom corresponding to the retaining ring (206), and the retaining ring (206) is engaged in the groove. The first housing (201) is provided with a sound outlet tube (207) at the bottom, and a sound outlet head (208) is sleeved on the sound outlet tube (207). An anti-slip pad (209) is provided on the outer surface of the sound outlet head (208), and the anti-slip pad (209) is made of rubber.

5. The TWS earphone charging connection structure according to claim 3, characterized in that: The charging connection assembly includes an earphone battery (402), the earphone battery (402) is engaged between two sets of second connecting posts (204), a charging plate (403) is provided at the bottom of the earphone battery (402), a guide plate (404) is provided on one side of the charging plate (403), and two sets of connection openings (405) are provided on the guide plate (404) corresponding to the two sets of charging holes (401), and two sets of charging connectors (301) are engaged in the two sets of connection openings (405).

6. The TWS earphone charging connection structure according to claim 5, characterized in that: The charging connection assembly also includes a second PCB board (406), the top of the earphone battery (402) is provided with the second PCB board (406), both ends of the second PCB board (406) are provided with connectors (407), the second PCB board (406) is secured in the second mounting slot (203) by two sets of connectors (407), and one end of the second charging indicator (408) passes through the second observation hole (205) and is connected to the top of the second PCB board (406).

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