Waterproof connection structure and wireless earphone

Abstract

This invention discloses a waterproof connection structure and a wireless earphone. The waterproof connection structure includes a housing (1) and a cable assembly (2). The housing (1) has a connector hole (10). The cable assembly (2) includes an outer sheath (20), a wire (21) passing through the outer sheath (20), and a connector (22) connected to the end of the outer sheath (20). The connector (22) is used to connect to the connector hole (10). The outer sheath (20) includes an integrally formed sleeve (200) and a sealing ring (201). The sealing ring (201) is connected to the connector (22) and has an interference fit with the connector hole (10). The waterproof connection structure of this invention can effectively improve the sealing performance between the connector and the connector hole by integrally forming a sealing ring on the outer sheath that fits tightly with the connector hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the earphone technical field, and particularly relates to a waterproof connecting structure and a wireless earphone. BACKGROUND

[0002] The wireless earphone, such as a bone conduction earphone, generally comprises a plurality of functional devices and a cable assembly connecting the functional devices, and the functional devices are, for example, earphone heads, battery compartments or control compartments. Generally, the number of earphone heads is two, and the earphone heads, the battery compartments and the control compartments are connected through the cable assembly to realize the electrical connection between the functional devices. Generally, the cable assembly between the earphone heads and the battery compartments and the cable assembly between the earphone heads and the control compartments are called ear hooks, and the cable assembly between the battery compartments and the control compartments is called a neck-wearing line.

[0003] In use, the connection between the cable assembly and the functional device is prone to bending and twisting, thereby affecting the sealing performance of the connection, and after the sealing performance is deteriorated, external liquid is prone to invading the inside of the functional device, thereby affecting the normal work of the functional device. SUMMARY

[0004] The present application aims to provide a waterproof connecting structure and a wireless earphone, and the waterproof connecting structure can improve the sealing performance of the connection between the cable assembly and the functional device.

[0005] To achieve the above-mentioned application purposes, in one aspect, the present application provides a waterproof connecting structure, comprising:

[0006] a shell provided with a plug hole; and

[0007] a cable assembly comprising an outer skin layer, a wire arranged in the outer skin layer and a plug connected to the end of the outer skin layer, and the plug is used for plugging with the plug hole;

[0008] wherein the outer skin layer comprises a sleeve and a sealing ring formed integrally, the sealing ring is connected with the plug, and the sealing ring is in interference fit with the plug hole.

[0009] Further, the sealing ring comprises a body and at least one ring part protruding outward from the periphery of the body, the body is embedded in the plug, and the ring part is in interference fit with the plug hole.

[0010] Further, the plug is provided with a first protruding part matched with the plug hole, the first protruding part is located on the side of the ring part away from the sleeve, and a first annular groove is formed between the first protruding part and the ring part.

[0011] Furthermore, the connector is provided with a second protrusion that matches the connector hole. The second protrusion and the convex ring are respectively located on both sides of the first protrusion, and a second annular groove is formed between the first protrusion and the second protrusion.

[0012] Furthermore, the outer skin layer also includes a plurality of connectors connecting the first end face of the sleeve and the sealing ring, the connectors being embedded in the connector.

[0013] Furthermore, the connector is provided with a plurality of protruding first steps, and the connector 22 is provided with a protruding second step. The second step is located between two adjacent first steps, and the first step and the second step cooperate to form an annular third protrusion. A third annular groove is formed between the third protrusion and the first end face of the sleeve.

[0014] Furthermore, the housing has a second end face with the insertion hole provided. After the cable assembly is connected to the housing, the second end face fits and is interference-fitted with the first end face of the sleeve.

[0015] Furthermore, the cable assembly also includes an elastic metal wire passing through the outer sheath, the end of the elastic metal wire being provided with a recess and / or a protrusion, and the connector being injection molded outside the recess and the protrusion.

[0016] Furthermore, the outer skin layer is made of silicone, the connector is made of plastic, and the outer skin layer and the connector are molded together using a two-color injection molding process.

[0017] Furthermore, the inner surfaces of the connector and the socket are filled with adhesive.

[0018] Furthermore, the body includes a first outer peripheral surface extending from the convex ring portion toward the sleeve, and the first outer peripheral surface is provided with an annular recess.

[0019] On the other hand, the present invention provides a wireless earphone including a waterproof connection structure as described in any of the preceding claims.

[0020] Furthermore, the wireless earphone is a bone conduction earphone, which includes a battery compartment, a control compartment, and two earphone heads. The battery compartment, the control compartment, and the two earphone heads all include the housing. The battery compartment and the control compartment, the battery compartment and the earphone heads, and the control compartment and the earphone heads are all connected by the cable assembly.

[0021] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the outer skin layer is integrally formed with a sealing ring, which is connected to the connector and has an interference fit with the connector hole, thereby effectively achieving a seal between the connector and the housing. As a further improvement, adhesive is filled between the inner surfaces of the connector and the connector hole. Through adhesive bonding, not only can the firmness of the connection between the connector and the housing be improved, but the waterproof sealing between the connector and the connector hole can also be further improved. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a waterproof connection structure according to one embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the shell structure according to one embodiment of the present invention.

[0024] Figure 3 yes Figure 2 The diagram shows a structural schematic of the casing from another viewpoint.

[0025] Figure 4 This is a schematic diagram of the structure of a cable assembly according to one embodiment of the present invention.

[0026] Figure 5 yes Figure 4 The exploded view of the cable assembly shown.

[0027] Figure 6 This is a schematic diagram of the connector structure according to one embodiment of the present invention.

[0028] Figure 7 yes Figure 1 A schematic diagram of another view of the waterproof connection structure shown.

[0029] Figure 8 It is along Figure 7 A cross-sectional view along section line AA.

[0030] Figure 9 This is a schematic diagram of the structure of the end of the outer skin layer in one embodiment of the present invention.

[0031] Figure 10 yes Figure 8 Enlarged view of section I in the middle.

[0032] Figure 11 This is a planar schematic diagram of the end of the cable assembly in this invention.

[0033] Figure 12 yes Figure 11 Enlarged view of Part II.

[0034] Figure 13 This is a three-dimensional schematic diagram of the end of the cable assembly in this invention.

[0035] Figure 14 yes Figure 5 Enlarged view of Part III.

[0036] Figure 15 This is a schematic diagram of the structure of the wireless earphone in this invention. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0038] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] like Figures 1 to 14 As shown, a waterproof connection structure corresponding to a preferred embodiment of the present invention includes a housing 1 and a cable assembly 2 connected to the housing 1.

[0041] The housing 1 is provided with a connector hole 10, such as Figure 2 and Figure 3 As shown, the housing 1 has a second end face 11, and a connector hole 10 is disposed on the second end face 11. The housing 1 also includes an inner end face 12 disposed opposite to the second end face 11, and the connector hole 10 communicates from the second end face 11 to the inner end face 12.

[0042] The cross-sectional shape of the connector 10 is not limited; for example, it can be circular, rounded rectangle, ellipse, etc. Preferably, the connector 10 is a non-circular hole, which can provide a better limiting effect and prevent the cable assembly 2 from rotating around the axis of the circular hole under the action of torque. In the illustrated embodiment, the cross-sectional shape of the connector 10 is approximately a rounded rectangle.

[0043] like Figure 4 and Figure 5 As shown, the cable assembly 2 includes an outer sheath 20, wires 21 passing through the outer sheath 20, and a connector 22 connected to the end of the outer sheath 20. The wires 21 extend out of the connector 22 to connect to external functional devices. The number of wires 21 is not limited; there can be one or more, used for transmitting power or electrical signals.

[0044] The connector 22 is used to be inserted into the socket 10. In a preferred embodiment, the connector 22 is snapped into the socket 10. Figures 6 to 8 A specific connection structure is shown, in which the connector 22 includes two elastic arms 225 disposed opposite to each other. Each elastic arm 225 has an outwardly protruding hook 2250 at its end, and the two hooks 2250 protrude in a direction away from each other. After the connector 22 is inserted into the connector hole 10, the elastic arm 225 extends to the outside of the inner end face 12, and its hook 2250 hooks the inner end face 12, thereby preventing the connector 22 from exiting the connector hole 10.

[0045] like Figure 5 and Figure 9 As shown, the outer sheath 20 includes an integrally formed sleeve 200 and a sealing ring 201. The sealing ring 201 is connected to the connector 22 and is interference-fitted with the connector hole 10, thereby forming a waterproof seal at the connection between the cable assembly 2 and the housing 1.

[0046] In a preferred embodiment, the connector 22 and the outer sheath 20 are molded together using a two-color injection molding process. This eliminates the need for assembly steps between the connector 22, the sleeve 200, and the sealing ring 201, resulting in higher production efficiency, better injection molding precision, and improved consistency in the sealing effect between the sealing ring 201 and the connector hole 10. Figure 10 As shown, the tail 227 of the connector 22 is formed inside the sleeve 200. The sleeve 200 includes a cover layer 203 covering the front end face 2270 of the tail 227. By covering part of the front end face 2270 of the tail 227 with the cover layer 203, the connector 22 can be more firmly fixed inside the outer sheath 20, preventing the two from separating.

[0047] In a preferred embodiment, the outer sheath 20 is entirely made of silicone material, while the connector 22 is made of plastic material, such as PC+ABS, PC+glass fiber, or PA+glass fiber. Because silicone is elastic and has an interference fit with the connector 10, it maintains a tight fit with the connector 10, ensuring reliable sealing.

[0048] In a preferred embodiment, in addition to sealing with the sealing ring 201 and the socket 10, glue can be filled between the inner surfaces of the connector 22 and the socket 10. The glue can fill the gap between the connector 22 and the socket 10, which can not only improve the firmness of the connection between the cable assembly 2 and the housing 1 through bonding, but also further improve the sealing and waterproofing effect.

[0049] As a preferred implementation method, such as Figure 9 and Figure 10 As shown, the sealing ring 201 includes an annular body 2010 and a protruding ring portion 2011 extending outward from the outer periphery of the body 2010. The body 2010 is embedded in the connector 22, and the junction between its outer peripheral surface and the connector 22 is preferably smooth. The sealing ring 201 is press-fitted with the connector hole 10 through its protruding ring portion 2011, and the number of such rings can be one or more.

[0050] As a preferred implementation method, such as Figure 11 and Figure 12 As shown, the body 2010 includes a first outer peripheral surface 2012 extending from the protruding ring portion 2011 toward the sleeve 200, and the first outer peripheral surface 2012 is provided with an annular recess 2013. When adhesive is applied to the outer periphery of the connector 22, the recess 2013 can accommodate the adhesive on the outer periphery of the connector 22, thereby increasing the firmness of the adhesive connection, and at the same time effectively improving the sealing performance between the protruding ring portion 2011 and the connector hole 10.

[0051] As a preferred implementation method, such as Figure 10 and Figure 11As shown, the connector 22 is provided with a first protrusion 220 that matches the socket 10. The first protrusion 220 and the socket 10 are preferably in a clearance fit to facilitate insertion of the connector 22 into the socket 10. The first protrusion 220 is located on the side of the sealing ring 201 away from the sleeve 200, and a first annular groove 221 is formed between the first protrusion 220 and the protruding ring portion 2011. On one hand, the small distance between the first protrusion 220 and the inner wall of the socket 10 allows the first protrusion 220 to abut against the wall of the socket 10 when the cable assembly 2 bends or twists, thereby reducing or even eliminating the amount of movement of the connector 22, preventing loosening of the connector 22, and maintaining the seal between the connector 22 and the socket 10. On the other hand, when glue is filled between the connector 22 and the socket 10, the first annular groove 221 can hold more glue, making the adhesion between the connector 22 and the housing 1 more secure.

[0052] It is understandable that the number of the first protrusion 220 is not limited to one, such as Figure 10 and Figure 11 As shown, the connector 22 is provided with a second protrusion 222 that mates with the connector hole 10. The second protrusion 222 and the annular portion 2011 are respectively located on both sides of the first protrusion 220, and a second annular groove 223 is formed between the first protrusion 220 and the second protrusion 222. Preferably, the second protrusion 222 is clearance-fitted with the connector hole 10 to facilitate the insertion of the connector 22. The provision of the second protrusion 222 can further improve the firmness of the connection and the sealing of the connection.

[0053] The connector 22 is further provided with a third protrusion 224 between the first end face 2000 of the sleeve 200 and the convex ring portion 2011. The third protrusion 224 and the first end face 2000 of the sleeve 200 form a third annular groove 228. Since the third protrusion 224 is located near the outer end of the insertion hole 10, the seal between it and the insertion hole 10 can effectively prevent external moisture, liquids, dust and other foreign objects from entering, avoiding damage to the sealing ring 201 caused by foreign objects, and helping to maintain a good sealing effect. Preferably, the first end face 2000 of the sleeve 200 is fitted and interference-fitted with the second end face 11 of the housing 1, that is, the first end face 2000 of the sleeve 200 elastically abuts against the second end face 11 of the housing 1, so that a certain compressive force is maintained between the first end face 2000 and the second end face 11. On the one hand, it can improve the waterproof sealing effect; on the other hand, the gap between the two is 0, which can eliminate the gap at the connection and improve the aesthetics of the product. The first end face 2000 and the second end face 11 can also be bonded together to further prevent external moisture, liquids, dust and other foreign objects from entering the connector hole 10. More preferably, the outline size of the third protrusion 224 gradually increases towards the side where the first end face 2000 is located to further improve the sealing effect and prevent external moisture, liquids and dust and other foreign objects from entering.

[0054] As a preferred embodiment, refer to Figure 9 The sealing ring 201 also includes a plurality of connectors 2014 (four shown in the figure) connecting the first end face 2000 of the sleeve 200 and the body 2010. The connectors 2014 are embedded in the connector 22, and each connector 2014 is provided with a protruding first step portion 2015. (See reference...) Figure 6 and Figure 13 The connector 22 is provided with a protruding second step portion 226, and a first step portion 2015 is provided between two adjacent second step portions 226. The outer surfaces of the first step portion 2015 and the second step portion 226 are smoothly connected, and the two cooperate to form a third protrusion 224.

[0055] like Figure 5 and Figure 10 As shown, the cable assembly 2 also includes an elastic metal wire 23 threaded within the outer sheath 20. The elastic metal wire 23 provides elasticity to restore the cable assembly 2 to its original shape, allowing the earphone head to fit more closely to the skin of the face. It is made of an elastic material, such as a single metal, an alloy material including multiple metals, such as aluminum alloy, magnesium alloy, titanium alloy, spring steel, etc., or a composite material including metal and non-metal materials. Preferably, the material of the elastic metal wire 23 is titanium wire.

[0056] like Figure 10 and Figure 14 As shown, to improve the connection between the elastic metal wire 23 and the connector 22, the end of the elastic metal wire 23 is provided with multiple radially concave recesses 230 and / or multiple radially convex protrusions 231. The connector 22 covers the end of the elastic metal wire 23, covering the recesses 230 and protrusions 231, thereby forming an interlocking connection between the connector 22 and the elastic metal wire 23. The connection between the elastic metal wire 23 and the connector 22 is more secure, and it will not rotate or loosen during manufacturing or user use. The aforementioned recesses 230 and protrusions 231 can be formed by radially pressing the elastic metal wire 23.

[0057] The present invention also proposes a wireless earphone, which includes the waterproof connection structure described above.

[0058] like Figure 15As shown, the wireless earphone includes a battery compartment 30, a control compartment 31, and two earphone heads 32. The battery compartment 30 and the control compartment 31, the battery compartment 30 and the earphone heads 32, and the control compartment 31 and the other earphone head 32 are all connected by a cable assembly 2. The battery compartment 30, the control compartment 31, and the earphone heads 32 all include a housing 1. That is, the battery compartment 30, the control compartment 31, and the earphone heads 32 are all connected to the cable assembly 2 using the aforementioned waterproof connection structure, so as to improve the sealing effect of the connection between each part and the cable assembly 2, which helps to ensure the reliable operation of the wireless earphone.

[0059] Preferably, the wireless earphone is a bone conduction earphone, with its earpiece 32 in contact with the skin of the face, allowing the wearer to hear sound through bone conduction.

[0060] The above are merely specific embodiments of the present invention, and any improvements made based on the concept of the present invention shall be considered within the scope of protection of the present invention.

Claims

1. A waterproof connection structure, characterized in that, The waterproof connection structure is applied to wireless headphones, and the waterproof connection structure includes: The housing (1) is provided with a connector hole (10); and, The cable assembly (2) includes an outer sheath (20), a conductor (21) passing through the outer sheath (20), and a connector (22) connected to the end of the outer sheath (20). The connector (22) is used to plug into the socket (10). The connector (22) is snapped into the socket (10). The conductor (21) passes through the connector (22). The outer skin layer (20) includes an integrally formed sleeve (200) and a sealing ring (201). The sleeve (200) has a first end face (2000) facing the housing (1). The sealing ring (201) is located on the first end face (2000). The sealing ring (201) is connected to the connector (22) and is interference-fitted with the connector hole (10). The sealing ring (201) includes a body (2010) and at least one convex ring (2011) protruding from the outer periphery of the body (2010). The body (2010) is embedded in the connector (22), and the convex ring (2011) is press-fitted with the connector hole (10).

2. The waterproof connection structure as described in claim 1, characterized in that, The connector (22) is provided with a first protrusion (220) that is adapted to the connector hole (10). The first protrusion (220) is located on the side of the convex ring (2011) away from the sleeve (200), and a first annular groove (221) is formed between the first protrusion (220) and the convex ring (2011).

3. The waterproof connection structure as described in claim 2, characterized in that, The connector (22) is provided with a second protrusion (222) that is adapted to the connector hole (10). The second protrusion (222) and the protruding ring (2011) are located on both sides of the first protrusion (220), and a second annular groove (223) is formed between the first protrusion (220) and the second protrusion (222).

4. The waterproof connection structure as described in claim 1, characterized in that, The sealing ring (201) includes a plurality of connectors (2014) connecting the first end face (2000) of the sleeve (200) and the body (2010), the connectors (2014) being embedded in the connector (22).

5. The waterproof connection structure as described in claim 4, characterized in that, The connector (2014) is provided with a plurality of protruding first step portions (2015), and the connector (22) is provided with a protruding second step portion (226). The second step portion (226) is located between two adjacent first step portions (2015). The first step portions (2015) and the second step portions (226) cooperate to form an annular third protrusion (224). A third annular groove (228) is formed between the third protrusion (224) and the first end face (2000) of the sleeve (200).

6. The waterproof connection structure as described in claim 1, characterized in that, The housing (1) has a second end face (11) with the insertion hole (10) provided. After the cable assembly (2) is connected to the housing (1), the second end face (11) fits and is interference-fitted with the first end face (2000) of the sleeve (200).

7. The waterproof connection structure as described in claim 1, characterized in that, The cable assembly (2) further includes an elastic metal wire (23) passing through the outer sheath (20), the end of the elastic metal wire (23) being provided with a recess (230) and / or a protrusion (231), and the connector (22) being injection molded outside the recess (230) and the protrusion (231).

8. The waterproof connection structure as described in claim 1, characterized in that, The outer skin layer (20) is made of silicone, and the connector (22) is made of plastic. The outer skin layer (20) and the connector (22) are molded together by two-color injection molding.

9. The waterproof connection structure according to any one of claims 1 to 8, characterized in that, The inner surfaces of the connector (22) and the socket (10) are filled with glue.

10. The waterproof connection structure as described in claim 1, characterized in that, The body (2010) includes a first outer peripheral surface (2012) extending from the convex ring portion (2011) toward the sleeve (200), and the first outer peripheral surface (2012) is provided with an annular recess.

11. A wireless earphone, characterized in that, Includes the waterproof connection structure as described in any one of claims 1 to 10.

12. The wireless earphone as described in claim 11, characterized in that, The wireless earphone is a bone conduction earphone, which includes a battery compartment (30), a control compartment (31) and two earphone heads (32). The battery compartment (30), the control compartment (31) and the two earphone heads (32) all include the housing (1). The battery compartment (30) and the control compartment (31), the battery compartment (30) and the earphone heads (32) and the control compartment (31) and the earphone heads (32) are all connected by the cable assembly (2).

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