Earphone charging structure and earphone

Abstract

The utility model relates to the technical field of earphones, in particular to an earphone charging structure and an earphone. The earphone charging structure comprises a shell, a circuit board and a charging pin, the circuit board and the charging pin are arranged in the shell, a limiting groove is formed in the edge of the circuit board, a through hole corresponding to the limiting groove is formed in the shell, one end of the charging pin is inserted into the limiting groove so as to be electrically connected with the circuit board, and the other end of the charging pin is inserted into the through hole. And the other end of the charging pin passes through the through hole and extends to the outer surface of the shell. By adopting the above mode, the stability of the connection part can be improved, thereby improving the charging stability.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a headphone charging structure and a headphone. Background Technology

[0002] Wireless earphones, as accessories to mobile phones, tablets, computers, and other terminal products, have become one of the essential consumer electronics products in people's daily lives. Since wireless earphones need to be charged after a certain period of use, they are usually equipped with a corresponding charging case to store and charge them.

[0003] In related technologies, in order to enable the charging case to charge wireless earbuds, the charging case is usually equipped with a power output connector, and the wireless earbuds are equipped with an earbud charging structure that cooperates with the power output connector. When the wireless earbuds are placed in the charging case, the charging structure of the wireless earbuds cooperates with the power output connector of the charging case to enable the charging case to charge the earbuds.

[0004] Current headphone charging structures typically use copper pillars directly attached to the circuit board, with the pillars extending to the outer surface of the housing through through-holes. This connection method, after being connected with solder paste, is prone to loosening under stress during subsequent assembly, resulting in poor contact and affecting charging stability. Utility Model Content

[0005] This utility model provides an earphone charging structure and earphone, which can improve the stability of the connection, thereby improving the charging stability.

[0006] This utility model discloses an earphone charging structure, including: a housing, a circuit board and a charging pin disposed in the housing, the edge of the circuit board is provided with a limiting groove, the housing is provided with a through hole corresponding to the limiting groove, one end of the charging pin is inserted into the limiting groove to be electrically connected to the circuit board, and the other end of the charging pin extends through the through hole to the outer surface of the housing.

[0007] Optionally, the outer ring of the limiting groove is surrounded by a solder pad, and the solder pad is located on one side of the thickness direction of the circuit board, and the charging pin is soldered to the solder pad.

[0008] Optionally, the charging pin includes a connecting rod and a contact connected to one end of the connecting rod. The connecting rod is located at an off-center position of the contact. The outer side of the housing is provided with a receiving groove corresponding to the contact, so that the contact is received in the receiving groove.

[0009] Optionally, the connecting rod includes a connecting part, a limiting part, and a welding part connected in sequence. The connecting part is connected to the contact, the welding part is inserted into the limiting groove to weld to the welding pad, and the limiting part is used to hold the inner side of the housing.

[0010] Optionally, the limiting part is provided with a first guide slope on the side facing the welding part, and the end of the welding part is provided with a second guide slope.

[0011] Optionally, the inner side of the housing is provided with a clearance space corresponding to the limiting part.

[0012] Optionally, the portion of the charging pin extending into the housing is covered with sealant.

[0013] Optionally, the cross-section of the connecting rod is rectangular.

[0014] Optionally, the housing is provided with a plurality of limiting posts, and the circuit board is provided with a plurality of limiting holes, with the plurality of limiting posts corresponding to each other in the plurality of limiting holes.

[0015] Optionally, a battery electrically connected to the circuit board is also provided inside the housing.

[0016] This utility model also discloses an earphone, including a sound-generating module, a connecting part, and an earphone charging structure as described in any one of the above. The connecting part is provided with a wire connecting the sound-generating module and the circuit board. One end of the connecting part is connected to the outer shell of the sound-generating module, and the other end of the connecting part is connected to the outer shell of the earphone charging structure.

[0017] Optionally, the connecting portion includes a first end face connected to the outer shell and a second end face connected to the housing; the outer shell includes a front shell end face connected to the connecting portion, and the housing includes a rear shell end face connected to the connecting portion; the area of ​​the first end face is smaller than the area of ​​the front shell end face, and the area of ​​the second end face is smaller than the area of ​​the rear shell end face.

[0018] Optionally, the connecting portion is bounded by the side of the ear and includes a first curved portion disposed in front of the ear and a second curved portion disposed behind the ear; the first curved portion connects to the second curved portion, and the curvature of the first curved portion is less than the curvature of the second curved portion.

[0019] Compared with the prior art, the beneficial effects of the headphone charging structure and headphones provided in this embodiment are as follows: A limiting groove provided along the edge of the circuit board provides precise positioning and installation for one end of the charging pin. By inserting one end of the charging pin into the limiting groove, an electrical connection between the charging pin and the circuit board is achieved. Simultaneously, the limiting groove also provides a certain degree of fixation for the charging pin, preventing it from moving freely during use. A through hole on the housing, corresponding to the limiting groove, provides a channel for the other end of the charging pin to extend out of the housing's outer surface. Thus, when charging the headphones is required, the power output connector can easily connect to the charging pin extending out of the housing's outer surface, thereby achieving power transmission. Furthermore, the combined limiting of the charging pin by the limiting groove and through hole improves the stability of the connection, thereby enhancing charging stability. Attached Figure Description

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the headphone charging structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the circuit board structure provided in an embodiment of the present invention;

[0023] Figure 3 This is one of the structural schematic diagrams of the shell provided in the embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the charging pin provided in an embodiment of the present invention;

[0025] Figure 5 This is the second structural schematic diagram of the shell provided in this embodiment of the utility model;

[0026] Figure 6 This is one of the structural schematic diagrams of the earphone provided in this embodiment of the utility model;

[0027] Figure 7 This is the second structural schematic diagram of the earphone provided in this embodiment of the utility model.

[0028] The labels for the attached figures are as follows:

[0029] 100. Earphone charging structure; 110. Housing; 112. Through hole; 114. Receiving groove; 116. Clearance space; 118. Limiting post; 119. Rear shell end face; 120. Circuit board; 122. Limiting groove; 124. Solder pad; 126. Limiting hole; 130. Charging pin; 132. Connecting rod; 1322. Connecting part; 1324. Limiting part; 1324a. First guide slope; 1326. Welding part; 1326a. Second guide slope; 134. Contact; 200. Earphone; 210. Sound module; 212. Housing; 2122. Front shell end face; 220. Connecting part; 221. First end face; 222. Second end face; 223. First curved part; 224. Second curved part. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides an earphone charging structure 100, including: a housing 110, and a circuit board 120 and a charging pin 130 disposed in the housing 110. The edge of the circuit board 120 is provided with a limiting groove 122, and the housing 110 is provided with a through hole 112 corresponding to the limiting groove 122. One end of the charging pin 130 is inserted into the limiting groove 122 to be electrically connected to the circuit board 120, and the other end of the charging pin 130 extends through the through hole 112 to the outer surface of the housing 110.

[0032] Specifically, the housing 110 serves as the external protective component of the entire headphone charging structure 100, providing installation space and protection for the internal circuit board 120 and charging pins 130. The circuit board 120 is one of the core components of the headphone charging structure 100, responsible for handling charging-related circuit control functions. The charging pins 130 play a crucial role in connecting to the power output connector and transmitting electrical energy.

[0033] The headphone charging structure 100 provided in this embodiment of the application provides a precise positioning and installation position for one end of the charging pin 130 through a limiting groove 122 provided along the edge of the circuit board 120. By inserting one end of the charging pin 130 into the limiting groove 122, an electrical connection is achieved between the charging pin 130 and the circuit board 120. Simultaneously, the limiting groove 122 also provides a certain degree of fixation for the charging pin 130, preventing it from wobbling during use. A through hole 112 provided on the housing 110, corresponding to the limiting groove 122, provides a channel for the other end of the charging pin 130 to extend out of the outer surface of the housing 110. Thus, when the headphones need to be charged, the power output connector can easily connect to the charging pin 130 extending out of the outer surface of the housing 110, thereby achieving power transmission. Furthermore, the combined limiting of the charging pin 130 by the limiting groove 122 and the through hole 112 improves the stability of the connection, thereby enhancing the stability of the charging process.

[0034] It should also be noted that, compared to the traditional method of directly attaching copper pillars to the circuit board 120, inserting and fixing the charging pin 130 through the limiting groove 122 can better resist external forces during assembly and subsequent use. The positioning and fixing effect of the limiting groove 122 on the charging pin 130 greatly reduces the possibility of the charging pin 130 loosening under force, thereby improving the stability of the connection between the charging pin 130 and the circuit board 120, and thus improving the charging stability. During the production assembly process, the charging pin 130 can be clearly inserted into the limiting groove 122, making the operation simple and clear, reducing assembly difficulty and error rate. After alignment, automated welding operations can be achieved using automatic laser welding or automatic soldering machines to ensure consistent product quality. In addition, the above-mentioned configuration makes the spatial layout of the entire headphone charging structure 100 more compact and orderly, which is conducive to integrating more functions within the limited headphone space.

[0035] like Figure 1 and Figure 2 As shown, the outer ring of the limiting groove 122 is surrounded by a pad 124, and the pad 124 is located on one side of the thickness direction of the circuit board 120. The charging pin 130 is soldered to the pad 124.

[0036] Specifically, compared to simple plug-in connections, soldered connections have lower contact resistance, enabling more efficient and stable power transmission. By soldering the charging pin 130 to the pad 124, the reliability of power transmission during charging is greatly improved, reducing problems such as charging interruptions and slow charging speeds caused by poor contact, thus ensuring the stability and efficiency of headphone charging. During manufacturing, the pad 124 is positioned around the limiting groove 122, and the pad 124 is located on one side of the circuit board 120 in the thickness direction. This facilitates the use of automated soldering equipment during soldering, thereby improving the consistency and stability of soldering quality, increasing production efficiency, and reducing production costs.

[0037] Furthermore, the outer ring of the limiting groove 122 forms a U-shaped structure around the solder pad 124, providing a larger connection area when soldered to the charging pin 130. This arrangement of the solder pad 124 around the limiting groove 122 not only achieves electrical connection but also enhances the structural stability of the charging pin 130 within the limiting groove 122 to a certain extent. The soldered connection method makes the charging pin 130 and the circuit board 120 form a unified whole, better resisting external forces and further reducing the risk of the charging pin 130 loosening or falling off during use.

[0038] like Figure 3 and Figure 4 As shown, the charging pin 130 includes a connecting rod 132 and a contact 134 connected to one end of the connecting rod 132. The connecting rod 132 is located at an off-center position of the contact 134. The outer side of the housing 110 is provided with a receiving groove 114 corresponding to the contact 134 so that the contact 134 is received in the receiving groove 114.

[0039] Specifically, the contact 134 is housed within the receiving groove 114, resulting in a cleaner and more aesthetically pleasing appearance for the earphone. Furthermore, the receiving groove 114 provides excellent protection for the contact 134, improving the reliability and stability of the entire earphone charging structure 100. Additionally, the connecting rod 132 is located at an off-center position on the contact 134. When engaging with the through hole 112, it not only serves as a foolproof mechanism, but the receiving groove 114 also provides support for the contact 134, preventing all the force applied to the contact 134 during charging from being transmitted to the circuit board 120, thus protecting the connection point.

[0040] like Figure 4 As shown, the connecting rod 132 includes a connecting part 1322, a limiting part 1324 and a welding part 1326 connected in sequence. The connecting part 1322 is connected to the contact 134. The welding part 1326 is inserted into the limiting groove 122 to weld with the welding pad 124. The limiting part 1324 is used to hold the inner side of the housing 110.

[0041] Specifically, the charging pin 130 is secured in multiple ways through the locking mechanism of the limiting part 1324 against the inner side of the housing 110 and the welding of the welding part 1326 to the welding pad 124. This multiple securing method greatly improves the stability of the charging pin 130 within the housing 110, better resisting external forces and effectively preventing loosening or displacement of the charging pin 130 during assembly or daily use, thereby ensuring the stability and reliability of charging. In addition, the locking action of the limiting part 1324, in conjunction with the contact 134, can distribute some of the external force onto the housing 110, protecting the welding points, extending the service life of the welded connection, and improving the reliability of the headphone charging structure 100.

[0042] like Figure 4 As shown, the limiting part 1324 is provided with a first guide slope 1324a on the side facing the welding part 1326, and the welding part 1326 is provided with a second guide slope 1326a at its end.

[0043] Specifically, the first guide slope 1324a provided on the side of the limiting part 1324 facing the welding part 1326 serves as a guide when the charging pin 130 is installed into the housing 110. When the charging pin 130 is inserted into the housing 110, the first guide slope 1324a can guide the limiting part 1324 to smoothly slide into and abut against the housing 110, so as to lock into the corresponding position of the housing 110, reducing the installation difficulty and improving the installation efficiency. The second guide slope 1326a provided at the end of the welding part 1326 also serves as a guide when the welding part 1326 is inserted into the limiting groove 122. The second guide slope 1326a can guide the welding part 1326 to accurately insert into the limiting groove 122 and align with the solder pad 124, which facilitates the welding operation and also helps to improve the accuracy and quality of the welding.

[0044] like Figure 5 As shown, the inner side of the housing 110 is provided with a clearance space 116 corresponding to the limiting part 1324.

[0045] With the above configuration, when the charging pin 130 is installed inside the housing 110, the limiting part 1324 can smoothly enter the clearance space 116 and engage with the corresponding position inside the housing 110. The clearance space 116 prevents the limiting part 1324 from interfering with other components inside the housing 110 during installation, ensuring the smooth installation of the charging pin 130. Furthermore, the clearance space 116 allows for a more rational layout of the components inside the earphone, improving space utilization and facilitating the integration of more functions within the limited earphone space.

[0046] In an optional embodiment of this application, the portion of the charging pin 130 extending into the housing 110 is covered with sealant.

[0047] Specifically, after the charging pin 130 is soldered to the pad 124, automatic adhesive can be applied to the portion of the charging pin 130 extending into the housing 110 to completely cover the charging pin 130 inside the housing 110, thereby forming a sealant around the charging pin 130. This sealant can be silicone to improve the product's waterproof performance. In this way, the connection between the charging pin 130 and the housing 110 can meet the IPX5 waterproof requirement.

[0048] In an optional embodiment of this application, the cross-section of the connecting rod 132 is rectangular.

[0049] Specifically, compared to cross-sections of other shapes such as circles, rectangular cross-sections can better resist torsional forces when the limiting part 1324 is engaged with the inner side of the housing 110. This is because the four corners of the rectangle can form a tighter fit with the inner side of the housing 110, preventing the connecting rod 132 from rotating under torsional force, thereby further improving the stability of the charging pin 130. Simultaneously, the connecting rod 132 is located at an off-center position on the contact 134, resulting in a more stable fit, and the connection between the connecting rod 132 and the solder pad 124 is more closely fitted, which helps ensure the stability of the soldering position.

[0050] like Figure 2 and Figure 3 As shown, the housing 110 is provided with multiple limiting posts 118, and the circuit board 120 is provided with multiple limiting holes 126. The multiple limiting posts 118 are respectively inserted into the multiple limiting holes 126.

[0051] Specifically, the design of the limiting post 118 and the limiting hole 126 makes the installation of the circuit board 120 more convenient. During production and assembly, simply align the limiting hole 126 on the circuit board 120 with the limiting post 118 inside the housing 110, and then insert the circuit board 120. This simple installation method reduces assembly difficulty and improves assembly efficiency. Simultaneously, the cooperation between the limiting post 118 and the limiting hole 126 restricts the displacement and shaking of the circuit board 120 within the housing 110, ensuring that the installation position of the circuit board 120 in each headphone charging structure 100 is consistent, improving product consistency and quality stability, and enhancing the overall stability of the headphone charging structure 100. During headphone use, it may be subjected to various external forces, such as vibration and impact. The aforementioned limiting structure can effectively resist these external forces, protecting the circuit board 120 from damage, while also ensuring the connection stability between the circuit board 120 and other components, improving charging reliability.

[0052] In an optional embodiment of this application, a storage battery electrically connected to the circuit board 120 is also provided inside the housing 110.

[0053] Specifically, the headphone charging structure 100 is used to charge the battery to ensure the power required during headphone use.

[0054] like Figure 6 As shown and Figure 7 As shown, this utility model also discloses an earphone 200, including a sound-generating module 210, a connecting portion 220, and the earphone charging structure 100 of the aforementioned embodiments. A wire connecting the sound-generating module 210 and the circuit board 120 passes through the connecting portion 220. One end of the connecting portion 220 is connected to the outer shell 212 of the sound-generating module 210, and the other end of the connecting portion 220 is connected to the shell 110 of the earphone charging structure 100. This earphone 200 has the same structure and beneficial effects as the earphone charging structure 100 of the aforementioned embodiments. The structure and beneficial effects of the earphone charging structure 100 have been described in detail in the aforementioned embodiments and will not be repeated here.

[0055] like Figure 7 As shown, the connecting part 220 includes a first end face 221 connected to the outer shell 212 and a second end face 222 connected to the housing 110; the outer shell 212 includes a front shell end face 2122 connected to the connecting part 220, and the housing 110 includes a rear shell end face 119 connected to the connecting part 220; the area of ​​the first end face 221 is smaller than the area of ​​the front shell end face 2122, and the area of ​​the second end face 222 is smaller than the area of ​​the rear shell end face 119.

[0056] Specifically, when one end of the connecting part 220 is connected to the outer shell 212, the first end face 221 mates with the front shell end face 2122; when the other end of the connecting part 220 is connected to the outer shell 110, the second end face 222 mates with the rear shell end face 119, to ensure a proper fit during connection. Furthermore, the area of ​​the first end face 221 is smaller than the area of ​​the front shell end face 2122, and the area of ​​the second end face 222 is smaller than the area of ​​the rear shell end face 119. This facilitates the connection of the connecting part 220 with both the outer shell 212 and the outer shell 110, reduces the difficulty of connection, and also protects both ends of the connecting part 220.

[0057] Please continue to refer to this. Figure 7 The connecting portion 220 is bounded by the side of the ear and includes a first curved portion 223 disposed in front of the ear and a second curved portion 224 disposed behind the ear; the first curved portion 223 connects to the second curved portion 224, and the curvature of the first curved portion 223 is less than the curvature of the second curved portion 224.

[0058] Specifically, the connection between the first curved section 223 and the second curved section 224 facilitates the clamping of the user's auricle, making it easier for the sound-generating module 210 to align with the ear canal and ensure effective sound propagation. Furthermore, the curvature of the first curved section 223 is less than that of the second curved section 224, allowing for a better fit to the shape of the auricle and improving comfort when clamping it.

[0059] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. An earphone charging structure, characterized by, The device includes: a housing, a circuit board and a charging pin disposed within the housing, the circuit board having a limiting groove along its edge, the housing having a through hole corresponding to the limiting groove, one end of the charging pin being inserted into the limiting groove for electrical connection with the circuit board, and the other end of the charging pin extending through the through hole to the outer surface of the housing.

2. The earphone charging structure of claim 1, wherein, The outer ring of the limiting groove is surrounded by a solder pad, and the solder pad is located on one side of the thickness direction of the circuit board. The charging pin is soldered to the solder pad.

3. The headphone charging structure according to claim 2, characterized in that, The charging pin includes a connecting rod and a contact connected to one end of the connecting rod. The connecting rod is located at an off-center position of the contact. The outer side of the housing is provided with a receiving groove corresponding to the contact, so that the contact is received in the receiving groove.

4. The headphone charging structure according to claim 3, characterized in that, The connecting rod includes a connecting part, a limiting part, and a welding part connected in sequence. The connecting part is connected to the contact, the welding part is inserted into the limiting groove to weld to the welding pad, and the limiting part is used to hold the inner side of the housing.

5. The headphone charging structure according to claim 4, characterized in that, The limiting part is provided with a first guide slope on the side facing the welding part, and the end of the welding part is provided with a second guide slope.

6. The headphone charging structure according to claim 5, characterized in that, The inner side of the housing is provided with a clearance space corresponding to the limiting part.

7. The headphone charging structure according to any one of claims 2-6, characterized in that, The portion of the charging pin that extends into the housing is covered with sealant.

8. The headphone charging structure according to any one of claims 4-6, characterized in that, The cross-section of the connecting rod is rectangular.

9. The headphone charging structure according to any one of claims 1-6, characterized in that, The housing is provided with multiple limiting posts, and the circuit board is provided with multiple limiting holes, with each of the multiple limiting posts corresponding to one of the multiple limiting holes.

10. The headphone charging structure according to any one of claims 1-6, characterized in that, The housing also contains a storage battery that is electrically connected to the circuit board.

11. An earphone, characterized in that, The device includes a sound-generating module, a connecting part, and an earphone charging structure according to any one of claims 1-10. The connecting part is provided with a wire connecting the sound-generating module and a circuit board. One end of the connecting part is connected to the outer shell of the sound-generating module, and the other end of the connecting part is connected to the outer shell of the earphone charging structure.

12. The earphone according to claim 11, characterized in that, The connecting portion includes a first end face connected to the outer shell and a second end face connected to the housing; the outer shell includes a front shell end face connected to the connecting portion and the housing includes a rear shell end face connected to the connecting portion; the area of ​​the first end face is smaller than the area of ​​the front shell end face and the area of ​​the second end face is smaller than the area of ​​the rear shell end face.

13. The headphones according to claim 11, characterized in that, The connecting portion is bounded by the side of the ear and includes a first curved portion located in front of the ear and a second curved portion located behind the ear; the first curved portion connects to the second curved portion, and the curvature of the first curved portion is less than the curvature of the second curved portion.

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