Charging structure and wireless earphones

Abstract

A charging structure and wireless earphone are disclosed. The charging structure includes an insulating body, two charging terminals, and two connectors. The top surface of the insulating body has a receiving groove, into which one end of a battery cell is inserted. Both charging terminals are disposed within the insulating body, each including a contact portion and a welding portion. The contact portion is exposed outside the insulating body, and the welding portion has welding protrusions. Each connector includes a connecting section and a collar. The collar has welding holes, and the collars of the two connectors are respectively fitted onto corresponding welding protrusions through the welding holes and welded in place. The connecting sections of the two connectors are respectively connected to the positive and negative terminals of the battery cell. This charging structure facilitates welding positioning and exhibits high welding stability.

Description

Technical Field

[0001] This invention relates to the field of wireless headphone charging technology, and more particularly to a charging structure and a wireless headphone. Prior Technology

[0002] Headphones are audio converters that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers placed close to the ears. For ease of portability and use, wireless headphones have gradually become the mainstream choice.

[0003] Wireless earphones use wireless communication protocols to establish signal transmission paths, and they typically require a charging case for use. Currently, the charging dock structure of wireless earphones is located at the bottom of the earphone, and the terminals of the charging structure need to be soldered to the connecting wires to connect the positive and negative terminals of the battery. However, the existing connection between the terminals and the connecting wires involves point-to-point contact between one end of the connecting wire and one end of the terminal, or point-to-surface contact between one end of the connecting wire and one side of the terminal. This results in poor soldering stability and a low yield rate. Summary of the Invention

[0004] The purpose of this invention is to provide a charging structure and wireless earphones that facilitate welding positioning and have high welding stability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A charging structure, comprising: An insulating body has a receiving groove on its top surface, and one end of the battery cell is inserted into the receiving groove. Two charging terminals are both disposed within the insulating body. Each charging terminal includes a contact portion and a welding portion. The contact portion is exposed outside the insulating body, and the welding portion is provided with a welding protrusion. Two connectors, each connector including a connecting section and a collar, the collar having a welding hole, the collars of the two connectors respectively being fitted onto the corresponding welding protrusions through the welding holes and welded in place, the connecting sections of the two connectors respectively connecting to the positive and negative terminals of the battery cell.

[0007] As an optional embodiment of the above-mentioned charging structure, the charging structure further includes a flux, which is sleeved on the welding protrusion and fixedly connected to the collar.

[0008] As an optional embodiment of the above charging structure, the connector further includes an insulating outer sheath, which covers the connecting section and the collar. The insulating outer sheath has a limiting hole, the welding hole is located in the limiting hole, and the flux is located in the limiting hole and fixedly connected to the collar.

[0009] As an alternative to the above charging structure, along the direction in which the welding protrusion is inserted into the welding hole, the projection of a portion of the welding part is located outside the welding hole.

[0010] As an optional solution to the above charging structure, the contact portion is provided with multiple protrusions, and all of the protrusions are snapped and fixed to the insulating body.

[0011] As an optional solution to the above charging structure, the welding part has a fixing hole, and the insulating body includes a fixing protrusion, which passes through the fixing hole to fix the welding part.

[0012] As an optional solution to the above charging structure, the charging terminal further includes a connecting part, the two ends of which are respectively connected to the contact part and the welding part. The connecting part includes multiple connecting sub-segments connected in sequence, and the connecting sub-segments at adjacent ends are arranged at an included angle.

[0013] As an optional embodiment of the above charging structure, the contact portion is provided with a snap-fit ​​groove, and the insulating body is provided with a snap-fit ​​portion, which engages with the snap-fit ​​groove.

[0014] As an optional embodiment of the above charging structure, the connection position between the connecting part and the contact part is located within the snap-fit ​​groove.

[0015] A wireless earphone includes the aforementioned charging structure, and further includes a shell, a battery cell, and a speaker. The shell has an ear hole and a connection hole, the charging structure closes the connection hole, the speaker and the battery cell are disposed inside the shell, the speaker is electrically connected to the battery cell, and the speaker can play sound through the ear hole.

[0016] The beneficial effects of this invention:

[0017] This invention provides a charging structure and a wireless earphone. In this charging structure, since both charging terminals have welding protrusions, the collar of the connector can be fitted onto the corresponding welding protrusions before welding. At this time, the welding protrusions can support and position the connector through the collar, thereby ensuring the relative stability of the position between the charging terminals and the connector. It also eliminates the need for a structure for fixing the relative position between the charging terminals and the connector, which facilitates welding positioning and provides high welding stability. Simple Explanation of the Diagram

[0018] Figure 1 is a schematic diagram of the charging structure provided by the present invention;

[0019] Figure 2 is an exploded view of the charging structure provided by the present invention;

[0020] Figure 3 is a structural schematic diagram of the charging terminal and connector provided by the present invention;

[0021] Figure 4 is a schematic diagram of the structure of the insulating body provided by the present invention;

[0022] Figure 5 is a cross-sectional schematic diagram of the charging terminal and connector provided by the present invention;

[0023] Figure 6 is a schematic diagram of the structure of the charging terminal provided by the present invention. Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0026] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections via an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0027] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Headphones are audio converters that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers placed close to the ears. For ease of portability and use, wireless headphones have gradually become the mainstream choice. Wireless headphones establish a signal transmission path through wireless communication protocols. To ensure power supply, wireless headphones typically have internal batteries, and therefore usually require a charging case.

[0030] This embodiment provides a wireless earphone, which includes a charging structure, a housing, and a speaker. The housing has an ear hole and a connection hole, and the charging structure closes the connection hole. The speaker and the battery are disposed inside the housing, and the speaker and the battery are electrically connected. The speaker can play sound through the ear hole. In order for the wireless earphone to receive electrical signals emitted by a media player, a wireless module is also disposed inside the housing. The battery can power the wireless module and the speaker to ensure their normal operation.

[0031] In this embodiment, the wireless earphone also includes a microphone, which is disposed inside the housing and electrically connected to the battery cell, so that the wireless earphone has the function of receiving sound.

[0032] As shown in Figure 1, in this embodiment, the connection hole of the outer shell is located at the bottom, that is, the charging structure is located at the bottom of the wireless earphone. The battery cell 2 has a long strip structure so that the positive and negative terminals of the battery cell 2 are close to the microphone, speaker, and wireless module at the top of the outer shell. Therefore, the terminals of the charging structure need to be soldered to the connecting wires to connect the positive and negative terminals of the battery cell 2. However, the relative position between the terminals and the connecting wires is difficult to fix, resulting in low soldering accuracy, low soldering efficiency, and high production cost.

[0033] As shown in Figures 1 to 3, to solve the above problems, this embodiment provides a charging structure. The charging structure includes an insulating body 1, two charging terminals 3, and two connectors 4. The two charging terminals 3 are both disposed in the insulating body 1. Each charging terminal 3 includes a contact portion 31 and a welding portion 32. The contact portion 31 is located outside the insulating body 1. The welding portion 32 is provided with a welding protrusion 33. The connectors 4 include a connecting section 41 and a collar 42. The collar 42 has a welding hole 421. The collars 42 of the two connectors 4 are respectively fitted onto the corresponding welding protrusions 33 through the welding holes 421 and welded and fixed. The connecting sections 41 of the two connectors 4 are respectively connected to the positive and negative terminals of the battery cell 2.

[0034] In this charging structure, since both charging terminals 3 have welding protrusions 33, before welding, the collar 42 of the connector 4 can be fitted onto the corresponding welding protrusions 33. At this time, the welding protrusions 33 can support and position the connector 4 through the collar 42, thereby ensuring the relative stability of the position between the charging terminal 3 and the connector 4. It also eliminates the need for a structure to fix the relative position between the charging terminal 3 and the connector 4, improves welding accuracy, has high welding efficiency, and reduces costs.

[0035] It is worth noting that if the speaker of the wireless earphone is considered to be above and the microphone is considered to be below, then the welding protrusion 33 is set upwards, and the collar 42 of the connector 4 is fitted onto the welding protrusion 33 in a downward direction. At this time, the welding protrusion 33 can support the collar 42 before welding with it, ensuring the stability of the relative position between the welding protrusion 33 and the collar 42, facilitating welding positioning, and the gap between the two is appropriate, resulting in high welding stability.

[0036] The top surface of the insulating body 1 is provided with a receiving groove 11. One end of the battery cell 2 is inserted into the receiving groove 11. The receiving groove 11 can position the battery cell 2, ensuring the stability of the battery cell 2 inside the shell and reducing the possibility of damage to the battery cell 2 when the wireless earphone falls.

[0037] As shown in Figure 4, the insulating body 1 includes a bottom ring 141 and a side wall 142 surrounding the side wall 14 forming the receiving groove 11. The two side walls 142 are spaced apart to form two grooves 143. The welding protrusions 33 of the two charging terminals 3 are respectively disposed in one groove 143, and the collar 42 of the connector 4 is also disposed in the groove 143. The structure of the insulating body 1 provides space for the connection between the collar 42 and the welding protrusion 33.

[0038] As shown in Figure 2, the charging structure also includes a support block 6, which is disposed within the receiving groove 11. A clamping inclined surface 61 is provided on the side of the support block 6 facing away from the bottom surface of the receiving groove 11, and the battery cell 2 abuts against the clamping inclined surface 61. Driven by the clamping inclined surface 61, the battery cell 2 moves towards the side wall 142 of the receiving groove 11, thereby being clamped by the clamping inclined surface 61 and the side wall 142 of the receiving groove 11, ensuring the stability of the battery cell 2.

[0039] Furthermore, the bottom end of the battery cell 2 is provided with an adapter slope, which slides against the clamping slope 61.

[0040] As shown in Figures 1 and 2, the charging structure also includes flux 5, which is sleeved on the welding protrusion 33 and fixedly connected to the collar 42. Flux 5 is used to weld and fix the welding protrusion 33 and the collar 42. When the flux 5 is melted using a welding torch, it flows between the welding protrusion 33 and the collar 42. After the flux 5 cools and solidifies, the welding of the welding protrusion 33 and the collar 42 is completed.

[0041] Specifically, flux 5 is a solder ball. The metallic properties of tin are suitable for soldering. Before soldering, the solder ball is placed in the gap between the soldering protrusion 33 and the collar 42.

[0042] As shown in Figures 1 to 3, the connector 4 also includes an insulating outer sheath 43, which covers the connecting section 41 and the collar 42 to improve the safety of the charging structure and prevent short circuits inside the wireless earphone.

[0043] It is worth noting that when the flux 5 is heated and melted, it becomes fluid and may flow to other locations, resulting in insufficient flux 5 between the welding protrusion 33 and the collar 42, and also affecting other structures. As shown in Figure 3, to solve the above problems, the insulating outer skin 43 has a limiting hole 431, the welding hole 421 is located in the limiting hole 431, the flux 5 is located in the limiting hole 431 and is fixedly connected to the collar 42.

[0044] In other words, a limiting groove can be formed between the limiting hole 431 and the collar 42, and the welding hole 421 of the collar 42 is completely located within the limiting groove. When the flux 5 melts, due to the existence of surface tension and the small gap between the welding hole 421 and the welding protrusion 33, the flux 5 will not pass through the gap between the welding hole 421 and the welding protrusion 33. Therefore, the flux 5 will flow in the limiting groove, which can ensure that the flux 5 does not flow to other positions and can make the flux 5 evenly fill the limiting groove, so that the welding protrusion 33 is welded and fixed to the welding hole 421 in the circumferential direction, thus improving the welding quality.

[0045] As shown in Figure 5, along the direction in which the welding protrusion 33 is inserted into the welding hole 421, the projection of a portion of the welding part 32 lies outside the welding hole 421. That is, the welding part 32 cannot completely pass through the welding hole 421, and along the circumference of the receiving groove 11, the size A of the welding part 32 is larger than the size B of the welding hole 421. When the flux 5 melts, the welding part 32 can receive part of the melted flux 5, further reducing the possibility of the flux 5 passing through the gap between the welding hole 421 and the welding protrusion 33, ensuring that all the flux 5 cools and solidifies within the limiting element groove, thereby improving the welding quality between the welding protrusion 33 and the collar 42.

[0046] As shown in Figures 3 to 6, the contact portion 31 is provided with multiple protrusions 35, all of which are snapped and fixed to the insulating body 1. The multiple protrusions 35 can increase the contact area between the contact portion 31 and the insulating body 1, and at the same time, the multiple protrusions 35 can also improve the connection strength between the contact portion 31 and the insulating body 1 in different directions, thereby ensuring that the contact portion 31 will not detach from the insulating body 1.

[0047] Accordingly, the insulating body 1 is provided with a slot 15 that mates with each protrusion 35, and each protrusion 35 is inserted into the corresponding slot 15 to improve the stability of the connection between the charging terminal 3 and the insulating body 1.

[0048] In this embodiment, the welding part 32 has a fixing hole 321, and the insulating body 1 includes a fixing protrusion 12, which passes through the fixing hole 321 to fix the welding part 32. The fixing protrusion 12 can fix the welding part 32, thereby improving the stability of the welding part 32 and ensuring that the position of the welding part 32 will not change during the process of fitting the collar 42 of the connector 4 onto the fixing protrusion 12 and welding, thus improving the welding accuracy.

[0049] It is understood that in this embodiment, there is no additional fixing structure between the charging terminal 3 and the insulating body 1. When the insulating body 1 is being molded, the charging terminal 3 is placed in the molding mold of the insulating body 1, positioned, and then injection molded. After molding, the charging terminal 3 and the insulating body 1 form an integral structure fixed together. As shown in Figures 3 to 6, in order to further improve the connection strength between the charging terminal 3 and the insulating body 1, the charging terminal 3 also includes a connecting part 34. The two ends of the connecting part 34 are respectively connected to the contact part 31 and the welding part 32. The connecting part 34 includes multiple connecting sub-segments 341 connected in sequence, and the adjacent two-end connecting sub-segments 341 are arranged at an included angle.

[0050] Since the connecting part 34 includes multiple connecting segments 341 connected in sequence, and the adjacent two connecting segments 341 are set at an angle, the connecting part 34 has a multi-segment bending structure. This structure is set inside the insulating body 1, which increases the contact area between the connecting part 34 and the insulating body 1. In addition, the insulating body 1 can limit the connecting part 34 in different directions to ensure that the connecting part 34 will not move relative to the insulating body 1, thereby improving the stability between the charging terminal 3 and the insulating body 1.

[0051] During the injection molding process, multiple connecting segments 341 are embedded in the side wall 14 of the insulating body 1. This not only avoids the problems of oxidation and short circuit caused by the exposed connecting segments 341, but also improves the connection strength and ensures that the connecting part 34 will not move relative to the insulating body 1.

[0052] In this embodiment, the contact portion 31 is provided with a snap-fit ​​groove 311, and the insulating body 1 is provided with a snap-fit ​​portion 13. The snap-fit ​​portion 13 engages with the snap-fit ​​groove 311. The snap-fit ​​portion 13 can fix the contact portion 31 by the snap-fit ​​groove 311 to ensure that the contact portion 31 will not move. This ensures that after the wireless earphone is placed in the charging case, the contact portion 31 can contact the contacts in the charging case to charge the battery cell 2.

[0053] Furthermore, the connection position between the connecting portion 34 and the contact portion 31 is located within the snap-fit ​​groove 311. It can be understood that the thickness of the insulating body 1 is greatest at the snap-fit ​​portion 13, so the connection position between the connecting portion 34 and the contact portion 31 is located within the snap-fit ​​groove 311, which can improve the strength of the portion of the insulating body 1 in contact with the connecting portion 34.

[0054] To increase the distance between the two charging terminals 3 and improve insulation, the two charging terminals 3 are arranged symmetrically along the central axis of the receiving groove 11. The contact portions 31 of the two charging terminals 3 are located on opposite sides of the insulating body 1, and the welding portions 32 of the two charging terminals 3 are located on opposite sides of the insulating body 1.

[0055] As shown in Figure 3, the contact portion 31 of the two charging terminals 3 and the welding portion 32 of the two charging terminals 3 do not overlap in the circumferential direction of the receiving groove 11.

[0056] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there may be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

[0057] 1: Insulating body 11: Receiving tank 12: Fixed protrusion 13: Connecting part 14: Side wall 141: Bottom ring 142: Sidewall 143: Groove 15: Card slot 2: Battery Cell 3: Charging terminal 31:Contact Department 311: Card slot 32: Welding section 321: Fixing hole 33: Welding protrusion 34: Connecting part 341: Connect sub-segments 35: convex strip 4: Connectors 41: Connecting segment 42: Ring 421: Welding hole 43: Insulating outer sheath 431: Limiting hole 5: Flux 6: Support block 61: Clamp the inclined plane A, B: Dimensions

Claims

1. A charging structure, characterized in that it comprises: An insulating body (1) has a receiving groove (11) on its top surface, and one end of the battery cell (2) is inserted into the receiving groove (11); Two charging terminals (3) are both disposed in the insulating body (1), and the charging terminals (3) include a contact part (31) and a welding part (32). The contact part (31) is exposed outside the insulating body (1), and the welding part (32) is provided with a welding protrusion (33); Two connectors (4) include a connecting section (41) and a collar (42). The collar (42) is provided with a welding hole (421). The collars (42) of the two connectors (4) are respectively fitted onto the corresponding welding protrusions (33) through the welding holes (421) and welded and fixed. The connecting sections (41) of the two connectors (4) are respectively connected to the positive and negative terminals of the battery cell (2).

2. The charging structure as described in claim 1, wherein, The charging structure also includes a flux (5), which is sleeved on the welding protrusion (33) and fixedly connected to the collar (42).

3. The charging structure as described in claim 2, wherein, The connector (4) also includes an insulating outer skin (43), which covers the connecting section (41) and the collar (42). The insulating outer skin (43) has a limiting hole (431), the welding hole (421) is located in the limiting hole (431), and the flux (5) is located in the limiting hole (431) and fixedly connected to the collar (42).

4. The charging structure as described in claim 1, wherein, Along the direction in which the welding protrusion (33) is inserted into the welding hole (421), the projection of a portion of the welding part (32) is located outside the welding hole (421).

5. The charging structure as described in claim 1, wherein, The contact portion (31) is provided with a plurality of protrusions (35), and the plurality of protrusions (35) are embedded in the insulating body (1).

6. The charging structure as described in claim 1, wherein, The welding part (32) has a fixing hole (321), and the insulating body (1) includes a fixing protrusion (12), which passes through the fixing hole (321) to fix the welding part (32).

7. The charging structure as described in any one of claims 1 to 6, wherein, The charging terminal (3) also includes a connecting part (34), the two ends of which are connected to the contact part (31) and the welding part (32) respectively. The connecting part (34) includes multiple connecting sub-segments (341) connected in sequence, and the connecting sub-segments (341) at adjacent ends are arranged at an angle.

8. The charging structure as described in claim 7, wherein, The contact portion (31) is provided with a snap-fit ​​groove (311), and the insulating body (1) is provided with a snap-fit ​​portion (13), which engages with the snap-fit ​​groove (311).

9. The charging structure as described in claim 8, wherein, The connection position between the connecting part (34) and the contact part (31) is located within the snap-fit ​​groove (311).

10. A wireless earphone, characterized in that it includes a charging structure as described in any one of claims 1 to 9, and further includes a housing, a battery cell (2) and a speaker, wherein the housing has an ear hole and a connection hole, the charging structure closes the connection hole, the speaker and the battery cell (2) are disposed inside the housing, the speaker is electrically connected to the battery cell (2), and the speaker is capable of playing sound through the ear hole.

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