A waterproof USB connector

Abstract

The utility model discloses a waterproof USB connector, include: terminal subassembly, including insulating body and the signal terminal of being located in the insulating body, and the insulating body has the support part that forms from the surface outward extension, and the signal terminal is along the support part surface arrangement, first shell, surround in the periphery of terminal subassembly, second shell, surround in the periphery of first shell, and first shell and second shell and terminal subassembly jointly define the plug-in space of opening to the forward end, waterproof part, including the sealing ring of being sleeved in the front end of second shell, set up in the sealing gum of terminal subassembly rear end, and the sealing gum fills between support part and signal terminal, through the mode that the front end sealing ring combines with rear end sealing gum, effectively prevent moisture from the interface and the invasion of terminal gap, simultaneously, through the inside shield middle plate inhibition signal crosstalk, and with the help annular shield spare and metal shell form full -enclosing shielding structure, ensure high -speed data transmission stability. It is applicable to the occasion that the waterproof and electromagnetic shielding requirement is strict.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more particularly to a waterproof USB connector. Background Technology

[0002] With the widespread application of USB interfaces in consumer electronics, industrial equipment, automotive electronics, and other fields, their usage scenarios are gradually expanding from dry indoor environments to outdoor, humid, dusty, or electromagnetically interference-prone environments. However, traditional USB connectors suffer from two major technical challenges: Insufficient waterproofing: Traditional USB connectors rely on simple shell gaps or a single sealing ring for waterproofing, without specific sealing designs for the junctions between the terminal components and the shell, or for exposed areas of the terminals themselves. In humid, rainy, or high-moisture environments, moisture can easily seep into the interior through gaps in the shell joints and between the terminals and insulation, leading to short circuits, signal transmission interruptions, and even device burnout.

[0003] Poor electromagnetic shielding: With the widespread adoption of high-speed transmission protocols such as USB 3.0 and USB4, the number of signal terminals has increased, making interference between upper and lower rows of terminals and between terminals and the external electromagnetic environment increasingly prominent. Traditional connectors only achieve basic shielding through a metal shell, without a layered shielding structure inside the terminal assembly. Furthermore, the grounding connection between the shell and the terminal assembly is not tight, leading to problems such as signal crosstalk, reduced transmission rate, and data packet loss during high-speed transmission. This makes them unsuitable for scenarios with high electromagnetic compatibility (EMC) requirements, such as industrial control and automotive electronics.

[0004] Therefore, a waterproof USB connector needs to be developed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof USB connector with good sealing and shielding effects.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof USB connector, comprising: A terminal assembly includes an insulating body and a signal terminal disposed within the insulating body, the insulating body having a support portion extending outward from a surface, and the signal terminal being arranged along the surface of the support portion. A first outer casing surrounds the periphery of the terminal assembly; The second housing surrounds the first housing, and the first housing, the second housing, and the terminal assembly together define an interlocking space that opens towards the front end; The waterproof part includes a sealing ring fitted onto the front end of the second housing and a sealant disposed at the rear end of the terminal assembly, the sealant filling the space between the support part and the signal terminal.

[0007] Furthermore, the front outer surface of the second housing is provided with an inwardly recessed annular mounting groove, and the sealing ring is embedded in the mounting groove.

[0008] Furthermore, the support portion extends downward from the end of the insulating body and has an inner side and a top surface. The rear end of the signal terminal is attached to the inner side and top surface of the support portion, and the sealant fills and wraps the contact area between the signal terminal and the support portion.

[0009] Furthermore, the terminal assembly also includes a shielding middle plate disposed within the insulating body, the shielding middle plate dividing the signal terminals into an upper row of terminals and a lower row of terminals.

[0010] Furthermore, the insulating body includes a first insulating element, a second insulating element, and an outer insulating element covering the outside of it; the upper row of terminals is integrally formed with the first insulating element, the lower row of terminals is integrally formed with the second insulating element, and the shielding middle plate is sandwiched between the first insulating element and the second insulating element.

[0011] Furthermore, the first insulating component is provided with a first clearance hole penetrating its upper and lower surfaces, the second insulating component is provided with a second clearance hole penetrating its upper and lower surfaces, the shielding middle plate is provided with a third clearance hole corresponding to the first clearance hole and the second clearance hole, and the outer insulating component is integrally injection molded and fills the first clearance hole, the second clearance hole and the third clearance hole.

[0012] Furthermore, the outer insulating component includes an outer insulating base and an outer insulating tongue plate, and an annular shielding component is sleeved at the junction of the outer insulating base and the outer insulating tongue plate.

[0013] Furthermore, a mating groove is formed on the lower surface of the first insulating member, and a mating protrusion is formed on the upper surface of the second insulating member. The mating protrusion passes through the shielding plate and extends into the mating groove.

[0014] Furthermore, the connector also includes a grounding terminal, one end of which contacts the first housing and the other end of which penetrates the second housing.

[0015] Furthermore, the second outer shell is wrapped around the first outer shell using an injection molding process.

[0016] Compared to existing technologies, the advantages of this invention are as follows: This invention is a waterproof USB connector with excellent sealing and shielding effects. By combining a front-end sealing ring with a rear-end sealant, it effectively prevents moisture from entering through gaps in the interface and terminals. Simultaneously, an internal shielding plate suppresses signal crosstalk, and a ring-shaped shielding component forms a fully enclosed shielding structure with the metal shell, ensuring stable high-speed data transmission. It is suitable for applications with stringent requirements for waterproofing and electromagnetic shielding. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a waterproof USB connector according to the present invention; Figure 2 for Figure 1 An exploded view of the waterproof USB connector shown. Figure 3 for Figure 1 An exploded view of the terminal assembly of the waterproof USB connector shown. Figure 4 for Figure 3 A partial exploded view of the terminal assembly of the waterproof USB connector shown. Figure 5 for Figure 2 This is a schematic diagram of the terminal assembly of the waterproof USB connector from another angle.

[0019] In the diagram: 1. Terminal assembly; 2. First housing; 3. Second housing; 4. Waterproof section; 11. Insulating body; 12. Signal terminal; 13. Shielding middle plate; 111. First insulating component; 112. Second insulating component; 113. Outer insulating component; 121. Upper row of terminals; 122. Lower row of terminals; 1111. First insulating base; 1112. First tongue plate; 1121. Second insulating base; 1122. Second tongue plate; 1113. First clearance hole; 1123. Second clearance hole; 131. Third clearance hole Hole; 1114, mating groove; 1124, mating protrusion; 1211, first fixing section; 1212, first contact section; 1213, first mating section; 1221, second fixing section; 1222, second contact section; 1223, second mating section; 1131, outer insulating base; 1132, outer insulating tongue plate; 114, annular shield; 20, first receiving cavity; 30, second receiving cavity; 41, sealing ring; 42, sealant; 31, mounting groove; 115, support part; 5, grounding terminal. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the waterproof USB connector proposed according to this utility model. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] The specific solution of the waterproof USB connector provided by this utility model is described in detail below with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to 5 This utility model is a waterproof USB connector, which includes a terminal assembly 1, a first outer shell 2 and a second outer shell 3 surrounding the terminal assembly 1, and a waterproof part 4 that fits onto the second outer shell 3. The first outer shell 2, the second outer shell 3, and the terminal assembly 1 together define a mating space that opens towards the front end for mating the connector (not shown).

[0024] Please refer to Figures 1 to 4The terminal assembly 1 includes an insulating body 11, a plurality of signal terminals 12 fixed within the insulating body 11, and a shielding plate 13. Specifically, the insulating body 11 includes a first insulating element 111, a second insulating element 112, and an outer insulating element 113. The signal terminals 12 include an upper row of terminals 121 and a lower row of terminals 122. The upper row of terminals 121 is arranged along the first insulating element 111 and is integrally formed with the first insulating element 111. The lower row of terminals 122 is arranged along the second insulating element 112 and is integrally formed with the second insulating element 112.

[0025] The first insulating member 111 includes a first insulating base 1111 and a first tongue plate 1112 extending forward from the front end of the first insulating base 1111; the second insulating member 112 includes a second insulating base 1121 and a second tongue plate 1122 extending forward from the front end of the second insulating base 1121; the first insulating base 1111 and the second insulating base 1121 are correspondingly disposed, and the first tongue plate 1112 and the second tongue plate 1122 are correspondingly disposed.

[0026] The first insulating base 1111 and the first tongue plate 1112 are provided with a first clearance hole 1113 that penetrates their upper and lower surfaces. The second insulating base 1121 and the second tongue plate 1122 are provided with a second clearance hole 1123 that penetrates their upper and lower surfaces. The upper row of terminals 121 and the lower row of terminals 122 are respectively exposed in the first clearance hole 1113 and the second clearance hole 1123.

[0027] Please refer to Figure 4 The shielding middle plate 13 is disposed between the first insulating member 111 and the second insulating member 112, separating the upper row of terminals 121 and the lower row of terminals 122. Specifically, the shielding middle plate 13 is located between the first insulating base 1111 and the second insulating base 1121, and between the first tongue plate 1112 and the second tongue plate 1122. The shielding middle plate 13 has a third clearance hole 131 penetrating its upper and lower surfaces, which corresponds to the first clearance hole 1113 and the second clearance hole 1123, respectively.

[0028] Preferably, the first insulating member 111 has a mating groove 1114 formed from the lower surface, and the second insulating member 112 has a mating protrusion 1124 formed from the upper surface. The mating protrusion 1124 passes through the shielding middle plate 13 and extends into the mating groove 1114, thereby realizing the assembly of the first insulating member 111, the second insulating member 112 and the shielding middle plate 13.

[0029] Specifically, the signal terminals 12 are provided with twenty-four signal terminals 12, namely twelve upper row terminals 121 and twelve lower row terminals 122. Among them, the upper row terminals 121 include a first fixing section 1211 fixed to the first insulating base 1111, a first contact section 1212 extending forward from the first fixing section 1211 and fixed in the first tongue plate 1112, and a first mating section 1213 extending rearward from the first fixing section 1211; the lower row terminals 122 include a second fixing section 1221 fixed to the second insulating base 1121, a second contact section 1222 extending forward from the second fixing section 1221 and fixed in the second tongue plate 1122, and a second mating section 1223 extending rearward from the second fixing section 1221.

[0030] The outer insulating component 113 is integrally formed and fixedly attached to the first insulating component 111 and the second insulating component 112, covering the areas of the first insulating base 1111 and the second insulating base 1121 except for the first tongue plate 1112 and the second tongue plate 1122, and also covering the left and right sides and the front end of the first tongue plate 1112 and the second tongue plate 1122. Specifically, the outer insulating component 113 also fills the first clearance hole 1113, the second clearance hole 1123 and the third clearance hole 131, fixing the upper row of terminals 121 and the lower row of terminals 122 and the shielding middle plate 13. This enhances the bonding force between the first insulating component 111, the second insulating component 112 and the shielding middle plate 13.

[0031] Specifically, the outer insulating component 113 includes an outer insulating base 1131 and an outer insulating tongue 1132. The outer insulating base 1131 is fixedly connected to the first insulating base 1111 and the second insulating base 1121, and the outer insulating tongue 1132 is fixedly connected to the first tongue 1112 and the second tongue 1122.

[0032] An annular shield 114 is provided at the junction of the outer insulating base 1131 and the outer insulating tongue plate 1132. The annular shield 114 surrounds the outer insulating tongue plate 1132 and abuts against the outer insulating base 1131.

[0033] Please refer to Figure 2 The first outer shell 2 is surrounded by a metal wall in an annular shape and has a hollow first receiving cavity 20 with openings at both ends. The terminal assembly 1 is inserted forward from the rear end of the first outer shell 2 and assembled into the first receiving cavity 20.

[0034] The second outer shell 3 is surrounded by a plastic wall in an annular shape and forms a hollow second receiving cavity 30 with openings at both ends. The second outer shell 3 is formed by a mold, and the first outer shell 2 is located inside the second receiving cavity 30.

[0035] Please refer to Figure 2 and Figure 5The waterproof part 4 includes a sealing ring 41 and sealant 42. The second housing 3 has a mounting groove 31 formed by recesses from the surface inward. The inner ring of the sealing ring 41 is located in the mounting groove 31, and its outer ring extends out of the outer surface of the second housing 3. The first insulating base 1111 and the second insulating base 1121 extend downward from the lower end of the lower surface to form a plurality of support portions 115. The upper row of terminals 121 and the lower row of terminals 122 extend along the inner side and top surface of the support portions 115, and the sealant 42 fills the gaps between the upper row of terminals 121 and the lower row of terminals 122 and the support portions 115.

[0036] Preferably, a grounding terminal 5 is provided between the first housing 2 and the second housing 3, with one end of the grounding terminal 5 in contact with the outer surface of the first housing 2 and the other end penetrating through the second housing 3.

[0037] In manufacturing this waterproof USB connector, metal materials are stamped to form upper row terminals 121 and lower row terminals 122. Then, a first insulating component 111 and a second insulating component 112 are injection molded. The upper row terminals 121 and the first insulating component 111 are integrally formed and fixed, as are the lower row terminals 122 and the second insulating component 112, ensuring the terminals are exposed in corresponding clearance holes. A shielding plate 13 is placed between the first insulating component 111 and the second insulating component 112, so that the mating protrusion 1124 of the second insulating component 112 passes through the shielding plate 13 and inserts into the mating groove 1114 of the first insulating component 111, completing the positioning of the three components. The assembled first insulating component 111, second insulating component 112, and shielding plate 13 are placed in a mold, and an outer insulating component 113 is injection molded. An annular shielding component 114 is fitted onto the junction of the outer insulating base 1131 and the outer insulating tongue plate 1132.

[0038] The formed terminal assembly 1 is inserted from the rear end of the first housing 2 and fixed in the first receiving cavity 20. Then it is placed in the mold to form the second housing 3. A grounding terminal 5 is installed between the first housing 2 and the second housing 3.

[0039] Embed the sealing ring 41 into the mounting groove 31 of the second housing 3, ensuring that its outer ring extends beyond the outer surface of the second housing 3. Then fill the gap between the upper row terminal 121, the lower row terminal 122 and the support part 115 with sealant 42 to seal the end gap.

[0040] This utility model relates to a waterproof USB connector, featuring excellent sealing and shielding. By combining a front-end sealing ring with a rear-end sealant, it effectively prevents moisture from entering through gaps in the interface and terminals. Simultaneously, an internal shielding plate suppresses signal crosstalk, and a ring-shaped shielding component forms a fully enclosed shielding structure with the metal shell, ensuring stable high-speed data transmission. It is suitable for applications with stringent requirements for waterproofing and electromagnetic shielding.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof USB connector, characterized in that, include: Terminal assembly (1) includes an insulating body (11) and a signal terminal (12) disposed within the insulating body (11). The insulating body (11) has a support portion (115) extending outward from its surface, and the signal terminal (12) is arranged along the surface of the support portion (115). The first outer shell (2) surrounds the periphery of the terminal assembly (1); The second outer shell (3) is disposed around the first outer shell (2), and the first outer shell (2), the second outer shell (3) and the terminal assembly (1) together define an interlocking space that opens to the front end; The waterproof part (4) includes a sealing ring (41) fitted onto the front end of the second housing (3) and a sealant (42) disposed at the rear end of the terminal assembly (1), the sealant (42) filling the space between the support part (115) and the signal terminal (12).

2. The waterproof USB connector according to claim 1, characterized in that: The front outer surface of the second housing (3) is provided with an inwardly recessed annular mounting groove (31), and the sealing ring (41) is embedded in the mounting groove (31).

3. The waterproof USB connector according to claim 1, characterized in that: The support portion (115) extends downward from the end of the insulating body (11) and has an inner side and a top side. The rear end of the signal terminal (12) is attached to the inner side and top side of the support portion (115). The sealant (42) fills and wraps the contact area between the signal terminal (12) and the support portion (115).

4. The waterproof USB connector according to claim 1, characterized in that: The terminal assembly (1) further includes a shielding middle plate (13) disposed within the insulating body (11), the shielding middle plate (13) dividing the signal terminal (12) into an upper row of terminals (121) and a lower row of terminals (122).

5. The waterproof USB connector according to claim 4, characterized in that: The insulating body (11) includes a first insulating element (111), a second insulating element (112), and an outer insulating element (113) covering the outside of it; the upper row of terminals (121) is integrally formed with the first insulating element (111), the lower row of terminals (122) is integrally formed with the second insulating element (112), and the shielding middle plate (13) is sandwiched between the first insulating element (111) and the second insulating element (112).

6. The waterproof USB connector according to claim 5, characterized in that: The first insulating component (111) is provided with a first vent hole (1113) penetrating its upper and lower surfaces, the second insulating component (112) is provided with a second vent hole (1123) penetrating its upper and lower surfaces, the shielding middle plate (13) is provided with a third vent hole (131) corresponding to the first vent hole (1113) and the second vent hole (1123), and the outer insulating component (113) is integrally injection molded and filled with the first vent hole (1113), the second vent hole (1123) and the third vent hole (131).

7. The waterproof USB connector according to claim 5, characterized in that: The outer insulating component (113) includes an outer insulating base (1131) and an outer insulating tongue plate (1132), and an annular shield (114) is sleeved at the junction of the outer insulating base (1131) and the outer insulating tongue plate (1132).

8. The waterproof USB connector according to claim 5, characterized in that: The lower surface of the first insulating member (111) is formed with a mating groove (1114), and the upper surface of the second insulating member (112) is formed with a mating protrusion (1124). The mating protrusion (1124) passes through the shielding plate (13) and extends into the mating groove (1114).

9. The waterproof USB connector according to claim 1, characterized in that: The connector also includes a grounding terminal (5), one end of which is in contact with the first housing (2), and the other end of which passes through the second housing (3).

10. The waterproof USB connector according to claim 1, characterized in that: The second outer shell (3) is wrapped around the first outer shell (2) by injection molding.

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