A new type of waterproof headphone holder

Abstract

This utility model discloses a novel waterproof headphone holder, comprising a main housing with an internal headphone jack, a plurality of metal terminals inserted into the main housing and electrically connected to the headphone head, a rear cover installed at the rear of the main housing and sealing the rear end of the headphone jack, and a waterproof component covering the front end of the main housing. The rear cover and the rear of the main housing together form an opening groove. An epoxy block is applied and molded within the opening groove. The epoxy block includes a first epoxy block and a second epoxy block sequentially formed within the opening groove. The first epoxy block is located inside the opening groove and has a higher adhesive strength than the second epoxy block. Assembly ears are provided on both outer sides of the main housing, and a path extension structure is provided inside the main housing near the assembly ears. This utility model improves waterproof performance and achieves an optimal balance between performance and cost.

Description

Technical Field

[0001] This utility model belongs to the field of headphone holder technology, and in particular relates to a novel waterproof headphone holder. Background Technology

[0002] With the development of technology, electronic devices have become mobile terminals that integrate entertainment, leisure, multimedia interaction and other functions. This places more demands on the performance and usage environment of mobile phones, watches and tablets. For example, while swimming or diving in water, users can use electronic devices to listen to music, watch videos, take pictures and make and receive calls. Therefore, electronic devices are required to have waterproof functions at the plug connection with headphones.

[0003] In the prior art, Chinese Patent Publication CN217283315U discloses a slanted UV-adhesive waterproof headphone holder, which includes a main shell with an internal headphone jack, several metal terminals inserted into the main shell and electrically connected to the headphone head, a rear cover installed at the rear of the main shell and sealing the rear end of the headphone jack, and an epoxy block formed by dispensing to seal the opening at the rear end of the main shell. A UV waterproof component is coated on the front surface of the main shell by dispensing. The presence of the UV waterproof component and the epoxy block at the front and rear ends of the headphone holder improves its waterproof performance. However, during headphone assembly, the mounting ears on both sides of the main shell are engaged in the mounting grooves, causing deformation of the main shell. Since the epoxy block and the side walls of the main shell are in planar contact, cracks can form between the epoxy block and the main shell when the mounting ears deform under stress. During airtightness testing, air leakage occurs between the epoxy block and the main shell, indicating that the headphone holder's waterproof performance does not meet requirements.

[0004] To further improve the waterproofness of headphone holders, existing technology, such as the headphone connector and mobile phone disclosed in Chinese Patent Publication CN206098904U, features a stepped groove on the inner wall of the tail end of the plastic body. The end of the sealing element abuts against the groove, which increases the contact area between the sealing element and the plastic body, thus better sealing the tail end of the plastic body. However, this method has limited effect on improving the waterproof performance of the headphone holder. When the plastic body is deformed under stress during assembly, cracks still occur between the sealing element and the plastic body, and the waterproof performance cannot meet the requirements.

[0005] Therefore, it is necessary to provide a new type of waterproof headphone holder to solve the above-mentioned technical problems. Utility Model Content

[0006] The main objective of this invention is to provide a novel waterproof headphone holder that improves waterproof performance and achieves an optimal balance between performance and cost.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: A novel waterproof headphone holder includes a main housing with an internal headphone jack, a plurality of metal terminals inserted into the main housing and electrically connected to the headphone head, a rear cover installed at the rear of the main housing and sealing the rear end of the headphone jack, and a waterproof component covering the front end of the main housing. The rear cover and the rear of the main housing together form an opening groove. An epoxy block is applied and molded in the opening groove. The epoxy block includes a first epoxy block and a second epoxy block formed sequentially in the opening groove. The first epoxy block is located inside the opening groove and its adhesion is higher than that of the second epoxy block. Assembly ears are provided on both outer sides of the main housing, and a path extension structure is provided inside the main housing near the assembly ears.

[0008] Furthermore, the first epoxy block is formed by dispensing and curing a first adhesive, the viscosity of which is in the range of 120~160 Pa·s.

[0009] Furthermore, the second epoxy block is formed by dispensing and curing a second adhesive, the viscosity of which is in the range of 30~60 Pa·s.

[0010] Furthermore, the road extension structure includes a groove disposed inside the main housing and a protrusion connected to the groove, the groove and the protrusion forming a curved, airtight road.

[0011] Furthermore, the front end face of the main housing is inclined in the insertion direction and has an annular groove around the front opening. The bottom of the annular groove has an upwardly protruding rib, which is embedded in the waterproof component.

[0012] Furthermore, the inner ring of the waterproof component is provided with a plurality of positioning protrusions, which cooperate with the groove wall of the annular groove.

[0013] Furthermore, the metal terminals are divided into two groups and assembled on opposite sides of the main housing. The metal terminals are arranged side by side and the contact points with the earphone head are staggered along the insertion direction.

[0014] Furthermore, a limiting slot is provided inside the main housing to restrict the position of the metal terminal, and the limiting slot extends through the front and rear of the main housing.

[0015] Furthermore, the cross-section of the rear cover is similar to the cross-section of the inner groove of the main housing, and the rear cover has a clearance opening for the metal terminal to pass through only.

[0016] Furthermore, each of the metal terminals has a solder foot at its tail end, and a rearward-facing limiting support groove is provided on one side wall of the tail end of the main housing. When the metal terminal is inserted into the main housing, the solder foot is inserted into the limiting support groove to limit the position of the metal terminal in terms of assembly depth.

[0017] Compared with the prior art, the advantages of this novel waterproof headphone holder are as follows: (1) Innovative composite epoxy block sealing design: In the same opening groove at the tail, double-layer epoxy blocks (first epoxy block and second epoxy block) with high viscosity first and low viscosity are applied and cured sequentially. The high-viscosity first epoxy block is located on the inner side, which can penetrate and firmly bond to key parts such as the inner wall of the main shell, the gap of the rear cover and the path extension structure, forming a solid inner sealing barrier, effectively resisting stress cracking caused by the deformation of the assembly ear, and ensuring airtightness; the outer second epoxy block reduces material cost while ensuring sealing. This design achieves the optimal balance between performance and cost. (2) Unique path extension structure: The grooves and protrusions inside the main shell near the assembly ears form a path extension structure. Combined with the high viscosity first epoxy block, it greatly increases the contact area and bonding strength between the epoxy block and the main shell. The tortuous sealing path formed by the path extension structure can effectively block and extend the penetration path of water vapor or gas. Even if a small crack is generated locally, it can greatly improve the overall anti-penetration ability and provide a higher waterproof safety margin. (3) Multi-layer waterproof design at the front end: The front end of the main shell adopts a combination of inclined surface, annular groove, positioning protrusion and rib with waterproof components to form mechanical interlock and multiple sealing interfaces, which significantly enhances the compatibility, connection strength and sealing reliability of the front end when docking with the headphone plug, and effectively prevents liquid from entering from the front.

[0018] Therefore, the waterproof headphone socket provided by this solution, through double-layer composite colloid sealing, innovative path extension structure, multi-stage front-end waterproofing, and efficient plug terminal design, successfully achieves waterproof reliability, structural strength, and production efficiency far exceeding conventional products, while also taking cost control into account. It is an innovative product with excellent comprehensive performance and high market competitiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the exploded structure of the novel waterproof headphone holder according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the novel waterproof headphone holder according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the novel waterproof headphone holder according to an embodiment of the present invention; Figure 4This is an embodiment of the present utility model. Figure 3 A partial structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the main housing structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the metal terminal in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the waterproof component according to an embodiment of the present invention; The numbers in the diagram represent: 100-New type of waterproof headphone holder; 1-Main shell, 11-Earphone jack, 12-Assembled ear, 13-Opening slot, 14-Road extension structure, 141-Groove, 142-Protrusion, 15-Annular groove, 151-Protruding rib, 16-Limiting slot, 17-Extended limiting slot, 18-Limiting support slot; 2-Metal terminal, 21-First metal terminal, 22-Second metal terminal, 23-Third metal terminal, 24-Fourth metal terminal, 25-Fifth metal terminal, 26-Solder foot; 3-Rear cover, 31-Avoidance opening; 4-Waterproof component, 41-Filled connection part, 42-Waterproof end plate part, 43-Plug-in sealing ring, 44-Positioning protrusion; 5-Epoxy adhesive block, 51-First epoxy adhesive block, 52-Second epoxy adhesive block. Detailed Implementation

[0020] Please refer to Figures 1-7 This embodiment is a novel waterproof headphone holder 100, which includes a main housing 1 with an earphone jack 11 formed inside, a plurality of metal terminals 2 inserted into the main housing 1 and electrically connected to the earphone head, a rear cover 3 installed at the rear of the main housing 1 and sealing the rear end of the earphone jack 11, and a waterproof component 4 covering the front end of the main housing 1. The rear cover 3 and the rear of the main housing 1 together form an opening groove 13. An epoxy block 5 is formed in the opening groove 13 by dispensing. The epoxy block 5 includes a first epoxy block 51 and a second epoxy block 52 formed sequentially in the opening groove 13. The first epoxy block 51 is located inside the opening groove 13 and the adhesion of the first epoxy block 51 is higher than that of the second epoxy block 52. Assembly ears 12 are provided on both sides of the outside of the main housing 1, and a path extension structure 14 is provided inside the main housing 1 near the assembly ears 12.

[0021] The cross-section of the back cover 3 is similar to the cross-section of the inner groove of the main shell 1. The opening groove 13 formed by the back cover 3 and the tail of the main shell 1 together provides a dispensing space for the epoxy glue block 5, so as to prevent the glue from seeping into the headphone jack 11 and affecting the jack function when the epoxy glue block 5 is obtained.

[0022] The specific dispensing process is as follows: First, apply the first adhesive to the opening groove 13. After dispensing, cure at 150°C for 1 hour to obtain the first epoxy adhesive block 51. Then, apply the second adhesive to the opening groove 13. After dispensing, cure at 100°C for 1 hour to obtain the second epoxy adhesive block 52. The first epoxy adhesive block 51 and the second epoxy adhesive block 52 are bonded together to achieve the sealing of the tail of the main housing 1.

[0023] The first epoxy block 51 is formed by dispensing and curing a first adhesive. In this embodiment, the viscosity of the first adhesive is in the range of 120~160 Pa·s. Preferably, the first adhesive is THREE BOND 2285, a white adhesive, with a viscosity of 140 Pa·s. After dispensing, the first adhesive is cured at 150°C for 1 hour to obtain the first epoxy block 51. The second epoxy block 52 is formed by dispensing and curing a second adhesive. In this embodiment, the viscosity of the second adhesive is in the range of 30~60 Pa·s. Preferably, the second adhesive is THREE BOND 2222P, a black adhesive with a viscosity of 45 Pa·s. After dispensing, the second adhesive is cured at 100°C for 1 hour to obtain the second epoxy block 52.

[0024] Because the viscosity of the first adhesive is higher than that of the second adhesive, the adhesion of the first epoxy block 51 is higher than that of the second epoxy block 52. This allows the first epoxy block 51 to be firmly bonded to the inner wall of the main housing 1 and to key sealing points such as the gap between the rear cover 3 and the tail of the main housing 1, and the extension structure 14. This improves the waterproof performance. Even when the assembly ears 12 on both sides of the main housing 1 are deformed by force, cracks can be avoided between the first epoxy block 51 and the main housing 1. During airtightness testing, there will be no air leakage between the first epoxy block 51 and the main housing 1, thus improving the waterproof performance of the headphone holder. Since the cost of the first adhesive is higher and the cost of the second adhesive is lower, the first adhesive is applied first in the opening groove 13, followed by the second adhesive. The first epoxy block 51 formed by the curing of the first adhesive can be firmly bonded to the inner wall of the main shell 1, improving waterproofing. The use of the second adhesive on the outside can also reduce production costs. Therefore, by bonding the first epoxy block 51 and the second epoxy block 52 together and jointly achieving the seal at the tail of the main shell 1, the waterproofing performance of the headphone holder can be improved, and the production cost can be reduced.

[0025] In other embodiments, the type, viscosity range, and curing conditions of the first and second adhesives can be set according to actual conditions, and are not limited here.

[0026] In this embodiment, the path extension structure 14 includes a groove 141 disposed inside the main housing 1 and a protrusion 142 connected to the groove 141. The groove 141 and the protrusion form a curved, airtight path, which can extend the path. In this embodiment, the groove 141 and the protrusion 142 are filled with a first adhesive, that is, the groove 141 and the protrusion 142 are filled with a first epoxy adhesive block 51. The groove 141 and the protrusion form a curved, airtight path, increasing the contact area between the first epoxy adhesive block 51 and the main housing 1. Even if a crack appears at the contact point between the first epoxy adhesive block 51 and the main housing 1, the curved path formed by the groove 141 and the protrusion 142 will still extend the path for liquid or gas to enter the bottom of the opening groove 13, further improving the waterproofness of the earphone holder.

[0027] In other embodiments, the road extension structure 14 may be configured as a stepped structure, or as an "S"-shaped structure, or as other different structures depending on the actual situation.

[0028] The front end face of the main housing 1 is inclined in the insertion direction and has an annular groove 15 surrounding the front opening. The waterproof component 4 is roughly annular, and its inner ring has several positioning protrusions 44. The positioning protrusions 44 cooperate with the groove wall of the annular groove 15 to achieve tight assembly, ensuring the firmness of the assembly between the waterproof component 4 and the main housing 1. The waterproof component 4 includes a filling connection part 41 that fills the annular groove 15 and a waterproof end plate part 42 that completely covers the front end face of the main housing 1. A plug-in sealing ring 43 is formed on the waterproof end plate part 42 to seal with the earphone head. The angled opening of the waterproof component 4 at the head provides better adaptability and waterproof performance compared to a straight plug design. By filling the annular groove 15 with the adhesive of the waterproof component 4 and through the tight cooperation of the positioning protrusions 44, the connection strength and firmness between the waterproof component 4 and the main housing 1 can be effectively improved, thereby improving the sealing performance of the waterproof component 4. The bottom of the annular groove 15 is provided with an upwardly protruding rib 151, which is embedded in the waterproof component 4. The rib can further improve the sealing performance of the waterproof component 4.

[0029] In this embodiment, five metal terminals 2 are provided, namely a first metal terminal 21, a second metal terminal 22, a third metal terminal 23, a fourth metal terminal 24, and a fifth metal terminal 25. The first metal terminal 21 is a MIC PIN, the second metal terminal is a Right PIN, the third metal terminal is a DETECT PIN, the fourth metal terminal is a Left PIN, and the fifth metal terminal is a GND PIN. The five metal terminals 2 are assembled in two groups on opposite sides of the main housing 1. The first metal terminal 21, the second metal terminal 22, and the third metal terminal 23 form the first group and are assembled on the right side of the main housing 1; the fourth metal terminal 24 and the fifth metal terminal 25 form the second group and are assembled on the left side of the main housing 1. Specifically, both the first and second groups of terminals are inserted from the rear of the main housing 1, and the same group of metal terminals 2 is located in the same insertion channel of the main housing 1. The five metal terminals 2 are arranged side by side, and the contact points connecting to the earphone head are staggered along the insertion direction. The corresponding main housing 1 is provided with a limiting slot 16 to restrict the position of the metal terminal 2. The limiting slot 16 extends through the front and rear of the main housing 1 so that the metal terminal 2 can be inserted from the rear of the main housing 1 into the headphone jack 11 or even extend out of the front of the main housing 1. This embodiment realizes the pin-mount assembly process of the metal terminal 2, which greatly improves efficiency and has higher stability of terminal assembly quality compared with single-pin assembly.

[0030] In this embodiment, the head of the first metal terminal 21 extends out of the front end of the main housing 1. In order to prevent the metal terminal 2 from being deformed by external factors or from failing due to rebound after long-term use, thus affecting the reliability of the electrical connection, the front end of the main housing 1 is provided with an extended limiting groove 17 connected to the limiting slot 16 to limit the activity space of the first metal terminal 21 and protect the first metal terminal 21 from deformation and failure.

[0031] Each metal terminal 2 has a solder foot 26 at its tail end. A limiting support groove 18 with a rearward opening is provided on one side wall of the tail end of the main housing 1. When the metal terminal 2 is inserted into the main housing 1, the solder foot 26 is inserted into the limiting support groove 18 to limit the position of the metal terminal 2 in terms of assembly depth.

[0032] In other embodiments, the number of metal terminals 2 can be set according to the actual situation, and the number and structure of metal terminals 2 are not limited here.

[0033] The rear cover 3 has a clearance opening 31 for the metal terminal 2 to pass through. The rear cover 3 can fix the solder joint at the tail of the metal terminal 2 and strengthen the metal terminal 2 after assembly.

[0034] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A new waterproof earphone holder, characterized in that: It includes a main housing with an internally formed headphone jack, several metal terminals inserted into the main housing and electrically connected to the headphone head, a rear cover installed at the rear of the main housing and sealing the rear end of the headphone jack, and a waterproof component covering the front end of the main housing. The rear cover and the rear of the main housing together form an opening groove. An epoxy block is applied and molded in the opening groove. The epoxy block includes a first epoxy block and a second epoxy block formed sequentially in the opening groove. The first epoxy block is located inside the opening groove and its adhesion is higher than that of the second epoxy block. Assembly ears are provided on both outer sides of the main housing, and a path extension structure is provided inside the main housing near the assembly ears.

2. A new type of waterproof earphone seat according to claim 1, characterized in that: The first epoxy block is formed by dispensing and curing a first adhesive, the viscosity of which is 120~160 Pa·s.

3. A new type of waterproof earphone holder as claimed in claim 1, characterized in that: The second epoxy block is formed by dispensing and curing a second adhesive, the viscosity of which is 30~60 Pa·s.

4. A new type of waterproof earphone holder as claimed in claim 1, characterized in that: The road extension structure includes a groove disposed inside the main housing and a protrusion connected to the groove, the groove and the protrusion forming a curved, airtight road.

5. A novel waterproof headphone holder as described in claim 1, characterized in that: The front end face of the main housing is inclined in the insertion direction and has an annular groove around the front opening. The bottom of the annular groove has an upwardly protruding rib, which is embedded in the waterproof component.

6. A novel waterproof headphone holder as described in claim 5, characterized in that: The inner ring of the waterproof component is provided with a plurality of positioning protrusions, which cooperate with the groove wall of the annular groove.

7. A novel waterproof headphone holder as described in claim 1, characterized in that: The metal terminals are divided into two groups and are assembled on opposite sides of the main housing. The metal terminals are arranged side by side and the contact points with the earphone head are staggered along the insertion direction.

8. A novel waterproof headphone holder as described in claim 1, characterized in that: The main housing is provided with a limiting slot that restricts the position of the metal terminal, and the limiting slot extends through the front and rear of the main housing.

9. A novel waterproof headphone holder as described in claim 1, characterized in that: The cross-section of the rear cover is similar to the cross-section of the inner groove of the main housing, and the rear cover has a clearance opening for the metal terminal to pass through only.

10. A novel waterproof headphone holder as described in claim 1, characterized in that: The tail of each metal terminal is formed with a solder foot. A limiting support groove with a rearward opening is provided on one side wall of the tail end of the main housing. When the metal terminal is inserted into the main housing, the solder foot is inserted into the limiting support groove to limit the position of the metal terminal in terms of assembly depth.

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