Earphone tail plug, wireless earphone assembly and earphone charging box

Abstract

The utility model relates to the technical field of wireless headphones, and provides a headphone tail plug, a wireless headphone assembly and a headphone charging box, the headphone tail plug is integrally formed and comprises an insulating seat, the front surface of which is provided with a plugging groove, and which is provided with a first accommodating hole and a second accommodating hole; two ends of a first fixing part of the first terminal are respectively connected with a first contact part and a first connecting part, the first contact part is exposed on the back surface of the insulating seat, the first fixing part is inserted into the first accommodating hole, a first insulating fixing piece is sleeved on the first fixing part and is propped against the hole wall of the first accommodating groove hole, and the first connecting part is exposed in the inserting groove; the two ends of a second fixing part of the second terminal are connected with a second contact part and a second connecting part respectively, the second contact part is exposed on the back face of the insulating base, the second fixing part is inserted into the second containing hole, the second insulating fixing piece is arranged on the second fixing part in a sleeving mode and abuts against the hole wall of the second containing hole, and the second connecting part is exposed in the inserting groove. The utility model has the advantages of no need of assembly, easy size control, waterproofness and high firmness.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless earphones, and particularly relates to an earphone plug, a wireless earphone assembly and an earphone charging box. Background Art

[0002] In the prior art, a wireless earphone usually has an earphone plug at its tail for wireless contact charging, and the earphone plug is connected to an internal PCB board, so that wireless charging can be realized by the PCB board through the earphone plug. Among them, the earphone plug generally includes a plastic part and positive and negative terminals assembled on the plastic part. Such assembly is relatively troublesome, and the assembly size is difficult to accurately control, the waterproof property is not good enough, and the fixation is not firm enough. Summary of the Utility Model

[0003] The purpose of the utility model is to at least overcome one of the above-mentioned deficiencies of the prior art, and provides an earphone plug, a wireless earphone assembly and an earphone charging box. The earphone plug is integrally formed without assembly, and it is easy to obtain an earphone plug with relatively accurate dimensions, with good waterproof property and high fixing firmness.

[0004] The technical solution of the utility model is: an earphone plug is used for being inserted into an insertion interface at the bottom of a wireless earphone and electrically connected to a circuit board arranged at the bottom of the wireless earphone. It is characterized in that it includes a first terminal, a second terminal and an insulating seat integrally formed with the first terminal and the second terminal. Among them: for the insulating seat, a plugging groove that can be plugged into the insertion interface is arranged on the front surface, and a first accommodation hole and a second accommodation hole penetrating through the bottom surface of the plugging groove are arranged; for the first terminal, it is fixed in the first accommodation hole and includes a first contact part, a first fixing part and a first connecting part. One end of the first fixing part is connected to the first contact part, and the other end is connected to the first connecting part. The first contact part is exposed on the back surface of the insulating seat. The first fixing part is plugged into the first accommodation hole, and a first insulating fixing sleeve is sleeved on the first fixing part and abuts against the hole wall of the first accommodation groove hole. The first connecting part is exposed in the plugging groove and is provided with a first connecting structure that can be connected to the circuit board; for the second terminal, it is fixed in the second accommodation hole and includes a second contact part, a second fixing part and a second connecting part. One end of the second fixing part is connected to the second contact part, and the other end is connected to the second connecting part. The second contact part is exposed on the back surface of the insulating seat. The second fixing part is plugged into the second accommodation hole, and a second insulating fixing sleeve is sleeved on the second fixing part and abuts against the hole wall of the second accommodation hole. The second connecting part is exposed in the plugging groove and is provided with a second connecting structure that can be connected to the circuit board.

[0005] As a further improvement of this technical solution, in a direction perpendicular to the height of the earphone tail plug, the first contact portion protrudes laterally outward from the insulating base; in a direction perpendicular to the height of the earphone tail plug, the second contact portion protrudes laterally outward from the insulating base.

[0006] As a further improvement of this technical solution, the first receiving hole includes a first hole portion penetrating the bottom surface of the insertion slot and a second hole portion penetrating the front surface of the insulating base. The aperture of the first hole portion is larger than that of the second hole portion. The first insulating fixing sleeve is sleeved on a part of the first fixing portion and abuts against the inner wall of the first hole portion; the second receiving hole includes a third hole portion penetrating the bottom surface of the insertion slot and a fourth hole portion penetrating the front surface of the insulating base. The aperture of the third hole portion is larger than that of the fourth hole portion. The second insulating fixing sleeve is sleeved on a part of the second fixing portion and abuts against the inner wall of the third hole portion.

[0007] As a further improvement of this technical solution, the insulating base includes an insulating body and an insulating wall integrally formed on the insulating body and disposed between the first terminal and the second terminal to isolate the first terminal and the second terminal.

[0008] As a further improvement of this technical solution, a first clamping member is provided on the side surface of the first contact portion facing the insulating wall, and a first clamping groove adapted to the first clamping member is provided on the insulating wall. The first clamping member is inserted into the first clamping groove; a second clamping member is provided on the side surface of the second contact portion facing the insulating wall, and a second clamping groove adapted to the second clamping member is provided on the insulating wall. The second clamping member is inserted into the second clamping groove.

[0009] As a further improvement of this technical solution, the first fixing portion includes a fixing portion body and a protruding edge provided on the side surface of the fixing portion body and protruding laterally from the fixing portion body. The outer surface of the protruding edge abuts against the inner wall of the first receiving hole.

[0010] As a further improvement of this technical solution, a first positioning groove is provided on the bottom surface of the first contact portion, and a first positioning member adapted to the first positioning groove is provided on the insulating wall. The first positioning member is inserted into the first positioning groove; a second positioning groove is provided on the bottom surface of the second contact portion, and a second positioning member adapted to the second positioning groove is provided on the insulating wall. The second positioning member is inserted into the second positioning groove.

[0011] As a further improvement of this technical solution, the back surface of the earphone tail plug is a smooth inclined surface; the earphone tail plug is hexagonal.

[0012] The present utility model further provides a wireless earphone assembly, which includes a first wireless earphone worn on the user's left ear and a second wireless earphone worn on the user's right ear. The bottoms of the first wireless earphone and the second wireless earphone are respectively provided with the earphone tail plug described in any one of the above items.

[0013] The present utility model further provides an earphone charging case, which includes a charging case body and the wireless earphone assembly described in any one of the above items. The charging case body is provided with a first earphone slot for accommodating the first wireless earphone and a second earphone slot for accommodating the second wireless earphone; one end of a first elastic charging part arranged in the charging case body penetrates through the wall surface of the first earphone slot and is connected to the first terminal and the second terminal of the first wireless earphone; one end of a second elastic charging part arranged in the charging case body penetrates through the wall surface of the second earphone slot and is connected to the first terminal and the second terminal of the second wireless earphone.

[0014] The present utility model provides an earphone plug, a wireless earphone assembly and an earphone charging case. The earphone plug is used to be inserted into the insertion interface at the bottom of the wireless earphone and is electrically connected to a circuit board provided at the bottom of the wireless earphone to achieve wireless charging of the wireless earphone. The earphone plug includes a first terminal and a second terminal for realizing positive and negative connections, and an insulating seat integrally formed with the first terminal and the second terminal. Wherein, a plugging groove that can be inserted into the insertion interface is provided on the front surface of the insulating seat, and a first accommodation hole and a second accommodation hole penetrating the bottom surface of the plugging groove are provided; the first terminal is fixed in the first accommodation hole, and the first terminal includes a first contact part, a first fixing part and a first connecting part. One end of the first fixing part is connected to the first contact part, and the other end is connected to the first connecting part. The first contact part is exposed on the back surface of the insulating seat. The first fixing part is inserted into the first accommodation hole, and a first insulating fixing piece is sleeved on the first fixing part and abuts against the hole wall of the first accommodation groove hole. The first connecting part is exposed in the plugging groove and is provided with a first connecting structure that can be connected to the circuit board; the second terminal is fixed in the second accommodation hole, and the second terminal includes a second contact part, a second fixing part and a second connecting part. One end of the second fixing part is connected to the second contact part, and the other end is connected to the second connecting part. The second contact part is exposed on the back surface of the insulating seat. The second fixing part is inserted into the second accommodation hole, and a second insulating fixing piece is sleeved on the second fixing part and abuts against the hole wall of the second accommodation hole. The second connecting part is exposed in the plugging groove and is provided with a second connecting structure that can be connected to the circuit board. When the earphone plug is inserted into the wireless earphone, the first contact part and the second contact part can contact the positive and negative poles of an external power supply, and the external current is transmitted to the circuit board through the first connecting structure and the second connecting structure, so that the wireless earphone can be charged. The earphone plug of the present utility model is integrally formed, can be obtained without assembly, is easy to process, and it is easy to obtain an earphone plug with relatively accurate dimensions. Under the action of the first insulating fixing piece and the second insulating fixing piece, the waterproof performance of the first terminal and the second terminal is better and the fixing firmness is higher. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a perspective view of the earphone plug provided by the embodiment of the present utility model;

[0017] Figure 2 is a perspective view of the earphone plug from another perspective provided by the embodiment of the present utility model;

[0018] Figure 3 is an exploded view of the earphone plug provided by the embodiment of the present utility model;

[0019] Figure 4 is a side view of the earphone plug provided by the embodiment of the present utility model;

[0020] Figure 5 is a three-dimensional view of the first terminal and the second terminal in the earphone plug of the embodiment of the present utility model;

[0021] Figure 6 is a three-dimensional view of the insulating seat in the earphone plug provided by the embodiment of the present utility model;

[0022] Figure 7 is a three-dimensional view of the insulating seat from another perspective in the earphone plug provided by the embodiment of the present utility model;

[0023] Figure 8 is a cross-sectional view of the insulating seat in the earphone plug provided by the embodiment of the present utility model;

[0024] Figure 9 is a three-dimensional view of the wireless earphone assembly provided by the embodiment of the present utility model. Detailed implementation manners

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] It should be noted that the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a direct arrangement and connection, or an indirect arrangement and connection through intermediate components and intermediate structures.

[0027] In addition, in the embodiments of the present utility model, if there are terms indicating the orientation or positional relationship such as "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings or the conventional placement state or use state. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structures, features, devices or elements referred to must have a specific orientation or positional relationship, nor must they be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the various specific technical features and embodiments described in the specific implementation manners, they can be combined in any appropriate manner without contradiction. For example, different embodiments can be formed by combining different specific technical features / embodiments. To avoid unnecessary repetition, various possible combination manners of the specific technical features / embodiments in the present utility model will not be described separately.

[0029] The present utility model provides an earphone end plug. Please refer to Figures 1 to 8, the earphone plug 10 can be used to plug into the jack at the bottom of the wireless earphone and is electrically connected to the circuit board provided at the bottom of the wireless earphone to achieve wireless charging of the wireless earphone. The earphone plug 10 includes a first terminal 1 and a second terminal 2 for realizing the connection of the positive and negative power supplies, and an insulating seat 3 integrally formed with the first terminal 1 and the second terminal 2. Among them, the front surface of the insulating seat 3 is provided with a plug-in groove 31 that can be plugged into the jack. The groove wall of the plug-in groove 31 is adapted to the jack at the bottom of the wireless earphone. The groove wall of the plug-in groove 31 can not only play a guiding role during plugging, but also improve the firmness of the plugging of the earphone plug 10; the insulating seat 3 is also provided with a first receiving hole 32 and a second receiving hole 33 penetrating the bottom surface of the plug-in groove 31. The first receiving hole 32 and the second receiving hole 33 are respectively used to receive and fix the first terminal 1 and the second terminal 2, so that the insulating seat 3 can fix and isolate the first terminal 1 and the second terminal 2. The first terminal 1 is fixed in the first receiving hole 32, and the first terminal 1 includes a first contact portion 11, a first fixing portion 12 and a first connecting portion 13. One end of the first fixing portion 12 is connected to the first contact portion 11, and the other end is connected to the first connecting portion 13. The first contact portion 11 is exposed on the back surface of the insulating seat 3 (the surface opposite to the front surface of the insulating seat 3) for contacting and connecting with an external power supply; the first fixing portion 12 is inserted into the first receiving hole 32, and a first insulating fixing member 4 is sleeved on the first fixing portion 12 and abuts against the hole wall of the first receiving groove hole. The first connecting portion 13 is exposed in the plug-in groove 31 and is provided with a first connecting structure 131 that can be connected to the circuit board. The second terminal 2 is fixed in the second receiving hole 33, and the second terminal 2 includes a second contact portion 21, a second fixing portion 22 and a second connecting portion 23. One end of the second fixing portion 22 is connected to the second contact portion 21, and the other end is connected to the second connecting portion 23. The second contact portion 21 is exposed on the back surface of the insulating seat 3 for contacting and connecting with an external power supply; the second fixing portion 22 is inserted into the second receiving hole 33, and a second insulating fixing member 5 is sleeved on the second fixing portion 22 and abuts against the hole wall of the second receiving hole 33. The second connecting portion 23 is exposed in the plug-in groove 31 and is provided with a second connecting structure 231 that can be connected to the circuit board. The earphone plug 10 is plugged into the bottom of the wireless earphone. The first contact portion 11 and the second contact portion 21 can respectively contact the positive and negative electrodes of the external power supply. The external current is transmitted to the circuit board through the first connecting structure 131 and the second connecting structure 231 to realize the charging of the wireless earphone. The earphone plug 10 of the present utility model is integrally formed, can be obtained without assembly, is easy to process, and it is easy to obtain an earphone plug 10 with relatively accurate dimensions. Under the action of the first insulating fixing member 4 and the second insulating fixing member 5, the waterproof performance of the first terminal 1 and the second terminal 2 is better and the fixing firmness is higher.

[0030] It can be understood that since the earphone plug 10 of the present utility model has better application prospects in wireless earphones, for the convenience of description, in the following embodiments of the present utility model, the earphone plug 10 is preferably used for wireless earphones. However, in other embodiments of the present utility model, the earphone plug 10 can also serve as the plug of other (wirelessly chargeable) components or devices. And in the following descriptions of the present utility model, the front side is the surface of the earphone plug 10 close to the bottom of the wireless earphone when the earphone plug 10 is installed on the wireless earphone, and the back side is the surface of the earphone plug 10 close to the external power supply when the earphone plug 10 is installed on the wireless earphone.

[0031] Optionally, please refer to Figures 1 to 4 , the back surface of the earphone plug 10 can be a smooth inclined surface 101, and the back surfaces (the contact surfaces with the external power supply) of the first contact portion 11 and the second contact portion 21 can also be corresponding smooth surfaces, so as to ensure that the first contact portion 11 and the second contact portion 21 can be in smooth and sufficient contact with the external power supply; the earphone plug 10 can be generally hexagonal, and can also be generally triangular, quadrilateral, pentagonal and other polygons, or generally simulate the shape of the ear, and the cross section of the earphone plug 10 can have a sharp corner structure 102 in the shape of a blade, with a strong sense of line; the surfaces of the earphone plug 10 can be transitioned through rounded corners 103, and the transition is smooth. Different from the commonly used arc in the prior art, the earphone plug 10 in the embodiment of the present utility model is designed with a sense of line, with edges and corners in appearance. On the one hand, it can improve the aesthetic degree of the earphone plug 10 and enhance the difference from the existing earphones. On the other hand, it can be adapted to the groove wall surfaces of the earphone slots (such as the first earphone slot and the second earphone slot in the present utility model) of the earphone charging box for accommodating wireless earphones. When the wireless earphone provided with the earphone plug 10 is placed in the earphone slot, it can play a role in positioning and convenient placement.

[0032] For the first terminal 1 and the second terminal 2, please refer to Figures 1 to 5 , preferably, along the direction perpendicular to the height of the earphone plug 10 (along the radial direction of the earphone plug 10), the first contact portion 11 can protrude laterally outward (along the radial direction of the earphone plug 10) from the insulating seat 3. When the earphone plug 10 is inserted into the bottom of the wireless earphone, the protruding first insulating seat 3 can play a role in limiting. Similarly, along the direction perpendicular to the height of the earphone plug 10, the second contact portion 21 can protrude laterally outward from the insulating seat 3. When the earphone plug 10 is inserted into the bottom of the wireless earphone, the protruding second insulating seat 3 can play a role in limiting.

[0033] Preferably, a positioning and clamping structure 6 can be provided between the first terminal 1 and the second terminal 2 and the insulating seat 3 to realize the positioning between the first terminal 1 and the second terminal 2 and the insulating seat 3, and improve the positioning accuracy and connection firmness.

[0034] For the positioning and clamping structure 6, please refer to Figure 3 and Figures 5 to 8 . Specifically, a first clamping member 61 may be provided on the side of the first contact portion 11 facing the insulating wall 35. The insulating wall 35 may be provided with a first clamping groove 62 adapted to the first clamping member 61. The first clamping member 61 is inserted into the first clamping groove 62 to achieve the positioning between the first terminal 1 and the insulating base 3. A second clamping member 63 may be provided on the side of the second contact portion 21 facing the insulating wall 35. The insulating wall 35 may be provided with a second clamping groove 64 adapted to the second clamping member 63. The second clamping member 63 is inserted into the second clamping groove 64 to achieve the positioning between the second terminal 2 and the insulating base 3.

[0035] Specifically, please refer to Figure 3 and Figures 5 to 8 . The first fixing portion 12 may include a fixing portion body and a protruding edge 65 provided on the side of the fixing portion body and protruding laterally (along the length and width directions of the earphone tail plug 10) from the fixing portion body. The outer surface of the protruding edge 65 abuts against the hole wall of the first receiving hole 32 to achieve the positioning between the first terminal 1 and the insulating base 3, improving the positioning accuracy and the firmness of the installation of the first terminal 1.

[0036] Specifically, please refer to Figure 3 and Figures 5 to 8 . A first positioning groove 66 may be provided on the bottom surface of the first contact portion 11. The insulating wall 35 is provided with a first positioning member 67 adapted to the first positioning groove 66. The first positioning member 67 is inserted into the first positioning groove 66 to achieve the positioning between the first terminal 1 and the insulating base 3. A second positioning groove 68 may be provided on the bottom surface of the second contact portion 21. The insulating wall 35 is provided with a second positioning member 69 adapted to the second positioning groove 68. The second positioning member 69 is inserted into the second positioning groove 68 to achieve the positioning between the second terminal 2 and the insulating base 3.

[0037] Preferably, please refer to Figure 3 and Figure 5 . The first connecting structure 131 may be provided at one end away from the first fixing portion 12. The first insulating fixing member 4 may be arranged to avoid (not sleeved on) the first connecting structure 131 to prevent affecting the conductivity of the first connecting structure 131. Similarly, the second connecting structure 231 may be provided at one end away from the second fixing portion 22. The second insulating fixing member 5 may be arranged to avoid (not sleeved on) the second connecting structure 231 to prevent affecting the conductivity of the second connecting structure 231.

[0038] Specifically, please refer to Figure 5, the cross-sections of the first fixing portion 12 and the second fixing portion 22 can be polygons such as triangles or quadrilaterals, avoiding arc settings that may cause slipping, and further improving the positioning accuracy and fixing firmness.

[0039] In practical applications, the first terminal 1 and the second terminal 2 can serve as the positive terminal and the negative terminal respectively to play the role of positive and negative connection for charging. The first terminal 1 and the second terminal 2 can preferably be made of copper parts, which have good corrosion resistance and high electrical conductivity. The first terminal 1 and the second terminal 2 can preferably be made of materials with high conductivity, low contact impedance, and relatively high hardness, which can effectively improve the charging efficiency. Under the same charging time, the battery life of the wireless earphone is longer. To meet the environmental test and appearance requirements, the outer surfaces of the first terminal 1 and the second terminal 2 can be provided with a metal layer, which has good corrosion resistance and wear resistance, is suitable for users to use in different harsh environments, and has good gloss, which can improve the product aesthetics; the metal layer can preferably be electroplated with precious metals such as rhodium, ruthenium, and platinum. The first connection structure 131 and the second connection structure 231 (i.e., the solder feet of the first terminal 1 and the second terminal 2) can be locally gold-plated for connection with the circuit board to improve the effect of electrical transmission or signal transmission.

[0040] Regarding the insulating seat 3, please refer to Figure 6 , preferably, the insulating seat 3 can include an insulating body 34, and an insulating wall 35 integrally formed on the insulating body 34 and disposed between the first terminal 1 and the second terminal 2. The insulating wall 35 is used to isolate the first terminal 1 and the second terminal 2 to achieve an insulating effect.

[0041] Further, please refer to Figure 6 and Figure 7 , the insulating seat 3 can be provided with a microphone hole 36 penetrating the front surface of the insulating wall 35 and the bottom surface of the insertion groove 31 to facilitate the realization of the microphone function of the wireless earphone.

[0042] Preferably, please refer to Figure 6 and Figure 8, the first receiving hole 32 may include a first hole portion 321 penetrating through the bottom surface of the insertion slot 31 and a second hole portion 322 penetrating through the front surface of the insulating base 3. The aperture of the first hole portion 321 is larger than that of the second hole portion 322. The first insulating fixing member 4 may be sleeved on a part of the first fixing portion 12 and abutted against the inner wall of the first hole portion 321. The first insulating fixing member 4 is clamped in the first hole portion 321 to achieve the positioning between the first terminal 1 and the insulating base 3, improving the positioning accuracy and the installation firmness of the first terminal 1. Similarly, the second receiving hole 33 may include a third hole portion 331 penetrating through the bottom surface of the insertion slot 31 and a fourth hole portion 332 penetrating through the front surface of the insulating base 3. The aperture of the third hole portion 331 is larger than that of the fourth hole portion 332. The second insulating fixing member 5 may be sleeved on a part of the second fixing portion 22 and abutted against the inner wall of the third hole portion 331. The second insulating fixing member 5 is clamped in the third hole portion 331 to achieve the positioning between the second terminal 2 and the insulating base 3, improving the positioning accuracy and the installation firmness of the second terminal 2.

[0043] For the first insulating fixing member 4 and the second insulating fixing member 5, please refer to Figure 3 and Figure 8 , which may be filling and curing members. That is, when preparing, insulating materials such as silica gel can be filled (such as by spraying and other processes) in the first hole portion 321 and the third hole portion 331 of the insulating base 3, and then cured to obtain the first insulating fixing member 4 and the second insulating fixing member 5 respectively. Insulating materials such as silica gel flow and fill in the gaps between the first terminal 1, the second terminal 2 and the insulating base 3, which can play a good waterproof role.

[0044] In practical applications, the first insulating fixing member 4 and the second insulating fixing member 5 are preferably resistant to high temperature of 260 °C and meet the SMT (Surface Mount Technology) process, thus facilitating processing and preparation.

[0045] During production, please refer to Figures 1 to 8 , the first terminal 1 and the second terminal 2 can be first processed and formed by processing devices such as CNC (Computer Numerical Control) precision engraving machines; then a metal layer can be provided on the outer surfaces of the first contact portion 11 and the second contact portion 21 (the surfaces exposed to the outside after being inserted into the wireless earphone) by electroplating and other methods; then the first terminal 1, the second terminal 2 and the insulating base 3 are integrally formed by injection molding and other integral forming methods; liquid insulating materials are filled between the gaps between the first terminal 1 and the insulating base 3 (the gap formed between the first terminal 1 and the inner wall of the first hole portion 321) and the gaps between the second terminal 2 and the insulating base 3 (the gap formed between the second terminal 2 and the inner wall of the third hole portion 331) by spraying and other methods, and after the insulating materials are cured, the first insulating fixing member 4 and the second insulating fixing member 5 are respectively formed, and then the earphone tail plug 10 can be obtained; after preparation, airtight testing or finished product inspection and other detections can also be carried out.

[0046] In specific applications, a sealing ring can be provided around the periphery of the insulating seat 3. After the earphone tail plug 10 is installed on the wireless earphone, the sealing ring can provide good waterproof and dustproof performance. Further, an annular sealing groove can be provided on the wall surface of the insulating seat 3 outside the insertion slot 31, and the sealing ring is arranged in the sealing groove. This can not only fix the sealing ring well, but also, after the sealing ring is formed or arranged in the sealing groove during installation, the earphone tail plug 10 can be inserted into the wireless earphone to complete the installation, which is very convenient. Moreover, the setting of the sealing ring can also achieve the interference installation of the earphone tail plug 10, improving the firmness of the insertion.

[0047] In specific applications, high-molecular acoustic waterproof materials can also be provided at the microphone hole 36 to achieve waterproof and dustproof performance, improving the reliability of the wireless earphone.

[0048] The present utility model also provides a wireless earphone assembly. Please refer to Figure 9 , the wireless earphone assembly includes a first wireless earphone 201 worn on the user's left ear and a second wireless earphone 202 worn on the user's right ear. The bottoms of the first wireless earphone 201 and the second wireless earphone 202 are respectively provided with the above-mentioned earphone tail plug 10 (or 10'). During installation, the earphone tail plug 10 of the first wireless earphone 201 is inserted into the insertion interface at the bottom of the first wireless earphone 201, and its circuit board can be connected to its first connection structure 131 and second connection structure 231 and abutted against the bottom surface of the insertion slot 31, so as to realize the wireless charging of the first wireless earphone 201. The installation of the second wireless earphone is similar to that of the first wireless earphone 201 above, and will not be elaborated here.

[0049] Preferably, in the present utility model, the first wireless earphone 201 and the second wireless earphone 202 can adopt a left-right ear symmetric structure design (when designing, the first wireless earphone 201 can be mirrored to form the second wireless earphone 202). When processing and preparing, the various components of the two (such as the earphone tail plug 10, etc.) basically do not need to be distinguished between left and right, and the same set of molds can be used, effectively reducing the processing time and cost.

[0050] Preferably, the colors of the first wireless earphone 201 and the second wireless earphone 202 can be different, so that users can directly distinguish between the left and right ears, with a clever design and novel concept. Specifically, the insulating seat 3 of the first wireless earphone 201 and the insulating seat 3' of the second wireless earphone can have different colors. The insulating seat 3 or the insulating seat 3' can be a plastic part, and it is easier to change its color during processing, making the processing more convenient.

[0051] In practical applications, the first wireless earphone 201 and the second wireless earphone 202 can achieve the IP68 dustproof and waterproof function under the action of the first insulating fixing member 4 and the second insulating fixing member 5, which can well improve the user experience.

[0052] Preferably, a matching plug-in positioning structure 7 may be provided between the earphone housing of the first wireless earphone 201 and the earphone tail plug 10, and a matching plug-in positioning structure 7 may be provided between the earphone housing of the second wireless earphone 202 and the earphone tail plug 10', so as to facilitate positioning during plugging and improve the connection firmness. Specifically, the plug-in positioning structure 7 may be a correspondingly arranged clamping member and clamping groove, etc.

[0053] Preferably, the first wireless earphone 201 and the second wireless earphone 202 may be TWS Bluetooth earphones. It can be understood that the TWS (True Wireless Stereo, that is, true wireless stereo) technology, simply speaking, means that the mobile phone connects to the main earphone, and then the main earphone quickly connects to the sub-earphone wirelessly to realize the wireless separation and use of the left and right Bluetooth channels; when the sub-earphone is not connected, the main earphone returns to the mono sound quality. Technicians apply the TWS technology to the field of Bluetooth earphones, which gives birth to a new product, the TWS Bluetooth earphone. Thanks to the rapid development of AI technology, TWS Bluetooth earphones can currently be used in combination with AI products, perfectly integrated into the AI field, and contribute to the realization of a complete intelligent product system route. For example, because the current intelligent voice service technology is also becoming increasingly mature, TWS Bluetooth earphones can already achieve intelligent controls such as full voice control and gesture control in automobiles, smart home products, etc. TWS Bluetooth earphones can also be applied to sonsor technologies (such as robot hand-eye calibration, feature recognition, safety guarantee, positioning prediction, human-computer interaction, visual detection, etc.) on smart bracelets and watches. It can be foreseen that in the future market competition, the artificial intelligence of TWS products will become one of the technological focuses.

[0054] Moreover, most of the wireless earphones on the market currently have a round and spherical design, lacking novelty in appearance, with a slow charging speed, and a short battery life under the same charging time. However, the first wireless earphone 201 and the second wireless earphone 202 of the present utility model are designed to fit the user's ears more closely, conforming to the ergonomic design, with a more linear appearance. The first terminal 1 and the second terminal 2 preferably use materials with high conductivity, low contact impedance, and relatively high hardness, effectively improving the charging efficiency and having a longer battery life under the same charging time, which can enhance the user's listening experience and better meet the current industry development requirements.

[0055] In specific applications, a potting structure may be provided in the first wireless earphone 201 and the second wireless earphone 202. Each important component in the earphone, such as a circuit board, is encapsulated by potting glue, so that each important component can be separately potted independently. On the one hand, the reliability is improved, and on the other hand, each important component can be independently replaced and maintained. And / or, a nano waterproof layer may also be provided on the surfaces of each important component in the first wireless earphone 201 and the second wireless earphone 202, which not only ensures the reliability of the earphone but also avoids a significant increase in the weight of the earphone.

[0056] The present utility model further provides an earphone charging case, which includes a charging case body and the wireless earphone assembly described above. The charging case body is provided with a first earphone slot for accommodating the first wireless earphone 201 and a second earphone slot for accommodating the second wireless earphone 202. One end of a first elastic charging part provided in the charging case body penetrates through the wall surface of the first earphone slot and is connected to the first terminal 1 and the second terminal 2 of the first wireless earphone 201, so as to realize wireless charging of the first wireless earphone 201. One end of a second elastic charging part provided in the charging case body penetrates through the wall surface of the second earphone slot and is connected to the first terminal 1' and the second terminal 2' of the second wireless earphone 202, so as to realize wireless charging of the second wireless earphone 202.

[0057] The present utility model provides an earphone plug, a wireless earphone assembly and an earphone charging case. The earphone plug 10 is used to be inserted into the insertion port at the bottom of the wireless earphone and is electrically connected to the circuit board provided at the bottom of the wireless earphone to realize wireless charging of the wireless earphone. The earphone plug 10 includes a first terminal 1 and a second terminal 2 for realizing positive and negative connections, and an insulating seat 3 integrally formed with the first terminal 1 and the second terminal 2. Among them, the front surface of the insulating seat 3 is provided with a plugging groove 31 that can be inserted into the insertion port, and a first accommodating hole 32 and a second accommodating hole 33 penetrating the bottom surface of the plugging groove 31 are provided; the first terminal 1 is fixed in the first accommodating hole 32. The first terminal 1 includes a first contact portion 11, a first fixing portion 12 and a first connecting portion 13. One end of the first fixing portion 12 is connected to the first contact portion 11, and the other end is connected to the first connecting portion 13. The first contact portion 11 is exposed on the back surface of the insulating seat 3. The first fixing portion 12 is inserted into the first accommodating hole 32, and a first insulating fixing member 4 is sleeved on the first fixing portion 12 and abuts against the hole wall of the first accommodating groove hole. The first connecting portion 13 is exposed in the plugging groove 31 and is provided with a first connecting structure 131 that can be connected to the circuit board; the second terminal 2 is fixed in the second accommodating hole 33. The second terminal 2 includes a second contact portion 21, a second fixing portion 22 and a second connecting portion 23. One end of the second fixing portion 22 is connected to the second contact portion 21, and the other end is connected to the second connecting portion 23. The second contact portion 21 is exposed on the back surface of the insulating seat 3. The second fixing portion 22 is inserted into the second accommodating hole 33, and a second insulating fixing member 5 is sleeved on the second fixing portion 22 and abuts against the hole wall of the second accommodating hole 33. The second connecting portion 23 is exposed in the plugging groove 31 and is provided with a second connecting structure 231 that can be connected to the circuit board. The earphone plug 10 is inserted into the wireless earphone. The first contact portion 11 and the second contact portion 21 can contact the positive and negative electrodes of the external power supply. The external current is transmitted to the circuit board through the first connecting structure 131 and the second connecting structure 231, and the charging of the wireless earphone can be realized. The earphone plug 10 of the present utility model is integrally formed and can be obtained without assembly. The processing is simple, and it is easy to obtain an earphone plug 10 with relatively accurate dimensions. Under the action of the first insulating fixing member 4 and the second insulating fixing member 5, the waterproof performance of the first terminal 1 and the second terminal 2 is better and the fixing firmness is higher.

[0058] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An earphone tail plug, used to be plugged into a plug interface at the bottom of a wireless earphone and electrically connected to a circuit board disposed at the bottom of the wireless earphone, characterized in that: It comprises a first terminal, a second terminal and an insulating seat integrally formed with the first terminal and the second terminal, wherein: The insulating seat has a plug-in slot on the front side that can be plugged into the plug-in interface, and a first receiving hole and a second receiving hole that penetrate through the bottom surface of the plug-in slot; A first terminal, fixed to the first receiving hole, comprising a first contact portion, a first fixing portion and a first connecting portion, wherein one end of the first fixing portion is connected to the first contact portion, and the other end is connected to the first connecting portion, the first contact portion is exposed to the back side of the insulating seat, the first fixing portion is plugged into the first receiving hole, a first insulating fixing piece is sleeved on the first fixing portion and abuts against the hole wall of the first receiving hole, the first connecting portion is exposed to the plug-in slot, and is provided with a first connecting structure that can be connected to the circuit board; The second terminal is fixed to the second accommodating hole, and includes a second contact portion, a second fixing portion and a second connecting portion. One end of the second fixing portion is connected to the second contact portion, and the other end is connected to the second connecting portion. The second contact portion is exposed to the back side of the insulating seat, and the second fixing portion is plugged into the second accommodating hole. The second insulating fixing piece is sleeved on the second fixing portion and abuts against the hole wall of the second accommodating hole. The second connecting portion is exposed to the plug-in slot and is provided with a second connecting structure that can be connected to the circuit board.

2. The earphone tail plug according to claim 1, characterized in that: Along a direction perpendicular to the height of the headphone tail plug, the first contact portion protrudes laterally outward from the insulating seat; along a direction perpendicular to the height of the headphone tail plug, the second contact portion protrudes laterally outward from the insulating seat.

3. The earphone tail plug according to claim 1, characterized in that: The first accommodating hole includes a first hole portion penetrating through the bottom surface of the plug-in slot and a second hole portion penetrating through the front surface of the insulating seat, the aperture of the first hole portion is larger than the aperture of the second hole portion, the first insulating fixing piece is sleeved on a portion of the first fixing portion and abuts against the hole wall of the first hole portion; the second accommodating hole includes a third hole portion penetrating through the bottom surface of the plug-in slot and a fourth hole portion penetrating through the front surface of the insulating seat, the aperture of the third hole portion is larger than the aperture of the fourth hole portion, the second insulating fixing piece is sleeved on a portion of the second fixing portion and abuts against the hole wall of the third hole portion.

4. The earphone tail plug according to claim 1, characterized in that: The insulating seat includes an insulating body and an insulating wall integrally formed with the insulating body and arranged between the first terminal and the second terminal to isolate the first terminal from the second terminal.

5. The earphone tail plug according to claim 4, characterized in that: A first clip is provided on the side of the first contact portion facing the insulating wall, the insulating wall is provided with a first clip groove matched with the first clip, and the first clip is inserted into the first clip groove; a second clip is provided on the side of the second contact portion facing the insulating wall, the insulating wall is provided with a second clip groove matched with the second clip, and the second clip is inserted into the second clip groove.

6. The earphone tail plug according to any one of claims 1 to 5, characterized in that: The first fixing portion includes a fixing portion body and a protruding edge which is arranged on a side surface of the fixing portion body and protrudes laterally from the fixing portion body, and an outer surface of the protruding edge abuts against a hole wall of the first accommodating hole.

7. The earphone tail plug according to claim 4 or 5, characterized in that: A first positioning groove is provided on the bottom surface of the first contact portion, and a first positioning piece adapted to the first positioning groove is provided on the insulating wall, and the first positioning piece is inserted into the first positioning groove; a second positioning groove is provided on the bottom surface of the second contact portion, and a second positioning piece adapted to the second positioning groove is provided on the insulating wall, and the second positioning piece is inserted into the second positioning groove.

8. The earphone tail plug according to any one of claims 1 to 5, characterized in that: The back side of the earphone tail plug is a smooth inclined surface; the earphone tail plug is hexagonal.

9. A wireless headset assembly, characterized in that: It comprises a first wireless earphone worn on the left ear of a user and a second wireless earphone worn on the right ear of the user, wherein the bottom of the first wireless earphone and the bottom of the second wireless earphone are respectively provided with the earphone tail plug according to any one of claims 1 to 8.

10. An earphone charging box, characterized in that: It includes a charging box body and the wireless earphone assembly according to claim 9, wherein the charging box body is provided with a first earphone slot for accommodating the first wireless earphone and a second earphone slot for accommodating the second wireless earphone; one end of a first elastic charging portion provided in the charging box body passes through the slot wall of the first earphone slot and is connected to the first terminal and the second terminal of the first wireless earphone; one end of a second elastic charging portion provided in the charging box body passes through the slot wall of the second earphone slot and is connected to the first terminal and the second terminal of the second wireless earphone.

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