Modular waterproof electrical connector
The modular design of the mechanical linkage sealing mechanism solves the problem of insufficient waterproof performance of electrical connectors in harsh environments, realizes automatic sealing during the insertion process, and improves assembly efficiency and connection reliability.
Patent Information
- Application Number
- CN202522312666.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-31
AI Technical Summary
Existing electrical connectors are not waterproof in harsh environments such as humid and dusty conditions, and their complex structure and inconvenient assembly and disassembly affect connection reliability and service life.
Adopting a modular design, the sealing mechanism is triggered by mechanical linkage during the insertion process. Dynamic sealing is achieved by using a compression ring, support ring, rubber ring, and annular airbag, realizing automatic sealing during the insertion process and avoiding additional operations or external air sources.
It achieves efficient sealing in harsh environments, improves assembly efficiency and connection reliability, and facilitates long-term waterproofing in environments with frequent insertion and removal and vibration.
Smart Images
Figure CN224935082U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connector technology, specifically a modular waterproof electrical connector. Background Technology
[0002] Electrical connectors, as indispensable basic components in electronic devices, undertake the crucial functions of signal transmission and power connection between circuits. With the rapid development of industrial automation, communication equipment, and new energy vehicles, higher demands are placed on the reliability, environmental adaptability, and modularity of electrical connectors. Especially in harsh conditions such as outdoor environments or humid and dusty conditions, the waterproof performance of electrical connectors directly affects the stable operation and service life of the entire equipment system. Currently, common electrical connectors typically consist of an insulating shell, conductive connectors, and cables, achieving electrical connection through mating. Their structural design must not only ensure the accuracy of the electrical connection but also consider ease of assembly and flexibility of maintenance.
[0003] However, existing electrical connectors still have certain limitations in terms of waterproof sealing. Most traditional connectors rely on static sealing methods such as silicone gaskets or injection molding seals, which are prone to aging, deformation, or incomplete sealing after repeated insertion and removal or mechanical vibration, allowing moisture or dust to enter and affecting connection reliability. Some products with waterproof structures are often complex in structure and inconvenient to disassemble and assemble. Therefore, we propose a modular waterproof electrical connector. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a modular waterproof electrical connector that can achieve adaptive dynamic sealing during the insertion process, effectively improve the waterproof reliability of the electrical connector in harsh environments such as humid and dusty conditions, and facilitate assembly and maintenance, thus effectively solving the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular waterproof electrical connector, comprising a first insulating shell and a sealing assembly; First insulating shell: A connector is fixed inside. A first cable is fixed at the right end inside the first insulating shell. The first cable is connected to the connector. A plug-in assembly is provided at the left end of the first insulating shell. A compression assembly is installed at the right end of the plug-in assembly. The compression assembly is located inside the first insulating shell. An air injection assembly is installed at the right end inside the first insulating shell. The air injection assembly and the compression assembly are connected. Sealing assembly: includes an annular sealing airbag, an air guide tube, and an air guide channel. The left end of the first insulating shell has a first annular groove, and the annular sealing airbag is fixed inside the first annular groove. The right end of the surface of the annular sealing airbag has evenly distributed openings, and the air guide tube is fixed inside the openings. The edge of the first insulating shell has evenly distributed air guide channels, and the air guide tube is fixed inside the corresponding air guide channel. All air guide channels are connected to the air injection assembly. By setting the sealing assembly in conjunction with the air injection assembly, the gap between the first insulating shell and the second insulating shell is sealed.
[0006] Furthermore, the air injection assembly includes an annular cavity, a rubber ring, a fixing ring, a slide rod, and a support ring. An annular cavity is provided at the right end of the first insulating shell, and the annular cavity is connected to all the air guiding channels. A rubber ring is slidably connected inside the annular cavity. A fixing ring is fixed to the left end of the rubber ring, and a uniformly distributed slide rod is fixed to the left end of the fixing ring. A uniformly distributed sliding opening is opened at the left end of the annular cavity, and the slide rod is slidably connected inside the corresponding sliding opening. A support ring is provided inside the first insulating shell, and all the slide rods are fixed to the left end of the support ring. By setting the air injection assembly, after the insertion assembly is inserted into the inside of the first insulating shell, it cooperates with the compression assembly to compress the support ring and move, thereby injecting the compressed air inside the annular cavity into the inside of the annular airbag, causing it to inflate and seal the gap between the first insulating shell and the second insulating shell.
[0007] Furthermore, the plug-in assembly includes a second insulating shell, a plug connector, and a second cable. The plug connector is fixed to the right end inside the second insulating shell, and the second cable is fixed to the left end inside the second insulating shell. The second cable is connected to the plug connector, and the plug connector is snapped into the inside of the connector. A second annular groove is provided at the right end of the second insulating shell, and the annular sealing airbag is located inside the second annular groove. The plug-in assembly is connected to the connector and the first insulating shell.
[0008] Furthermore, the extrusion assembly includes an extrusion ring and a guide ring. The guide ring is fixed inside the first insulating shell. The connector is located inside the guide ring. The support ring is sleeved on the circumferential surface of the guide ring. The extrusion ring is sleeved on the left end of the circumferential surface of the guide ring. The extrusion ring is fixed on the right end of the second insulating shell. The support ring is extruded by setting the extrusion assembly.
[0009] Furthermore, it also includes a connecting assembly, which comprises a swivel ring and an internally threaded ring. The swivel ring is fixed to the surface of the second insulating shell, and the right end of the swivel ring is rotatably connected to the internally threaded ring. The internally threaded ring is threadedly connected to the left end of the surface of the first insulating shell. The first insulating shell and the second insulating shell are connected by setting the connecting assembly.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This modular waterproof electrical connector has the following advantages: The sealing mechanism is automatically triggered by mechanical linkage during the insertion process. When the second insulating shell is inserted into the first insulating shell, the compression ring pushes the support ring to move, which in turn drives the slide rod and the fixed ring to squeeze the rubber ring to slide in the annular cavity. The air in the cavity is forced into the annular sealing airbag through the air guide channel and air guide tube, causing it to expand and tightly fill the annular gap between the two insulating shells. This design achieves the simultaneous completion of connection and sealing without additional operation or external air source, which significantly improves assembly efficiency and sealing reliability. It is especially suitable for long-term waterproofing needs in environments with frequent insertion and removal or vibration. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the plug-in assembly structure of this utility model; Figure 3 This is a schematic diagram of the joint structure of this utility model.
[0012] In the figure: 1 First insulating shell, 2 Connector, 3 First cable, 4 Sealing assembly, 41 Annular sealing airbag, 42 Air guide tube, 43 Air guide channel, 5 Injection assembly, 51 Annular cavity, 52 Rubber ring, 53 Fixing ring, 54 Slide rod, 55 Support ring, 6 Plug assembly, 61 Second insulating shell, 62 Plug connector, 63 Second cable, 7 Extrusion assembly, 71 Extrusion ring, 72 Guide ring, 8 Connecting assembly, 81 Rotary ring, 82 Internal threaded ring. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-3 This embodiment provides a technical solution: a modular waterproof electrical connector, including a first insulating shell 1 and a sealing component 4; First insulating shell 1: A connector 2 is fixed inside. A first cable 3 is fixed to the right end of the first insulating shell 1, and the first cable 3 is connected to the connector 2. A plug-in assembly 6 is provided at the left end of the first insulating shell 1. A compression assembly 7 is installed at the right end of the plug-in assembly 6, and the compression assembly 7 is located inside the first insulating shell 1. An air injection assembly 5 is installed at the right end of the first insulating shell 1, and the air injection assembly 5 is connected to the compression assembly 7. The air injection assembly 5 includes an annular cavity 51, a rubber ring 52, a fixing ring 53, a sliding rod 54, and a support ring 55. An annular cavity 51 is provided at the right end of the first insulating shell 1, and the annular cavity 51 communicates with all the air guiding channels 43. The internal sliding connection of the first insulating shell 1 includes a rubber ring 52. A fixing ring 53 is fixed to the left end of the rubber ring 52, and evenly distributed sliding rods 54 are fixed to the left end of the fixing ring 53. Evenly distributed sliding openings are provided at the left end of the annular cavity 51, and the sliding rods 54 are slidably connected inside the corresponding sliding openings. A support ring 55 is provided inside the first insulating shell 1, and all sliding rods 54 are fixed to the left end of the support ring 55. The plug-in assembly 6 includes a second insulating shell 61, a plug connector 62, and a second cable 63. The plug connector 62 is fixed to the right end inside the second insulating shell 61, and the second cable 63 is fixed to the left end inside the second insulating shell 61. The second cable 63 is connected to the plug connector 62. The connector 62 is snapped into the inside of the connector 2. The right end of the second insulating shell 61 has a second annular groove, and the annular sealing airbag 41 is located inside the second annular groove. The compression assembly 7 includes a compression ring 71 and a guide ring 72. The guide ring 72 is fixed inside the first insulating shell 1. The connector 2 is located inside the guide ring 72. The support ring 55 is sleeved on the circumferential surface of the guide ring 72. The compression ring 71 is sleeved on the left end of the circumferential surface of the guide ring 72. The compression ring 71 is fixed to the right end of the second insulating shell 61. The assembly also includes a connecting assembly 8, which includes a rotating ring 81 and an internal threaded ring 82. The rotating ring 81 is fixed on the surface of the second insulating shell 61. The right end of 1 is rotatably connected to an internal threaded ring 82, which is threaded to the left end of the surface of the first insulating shell 1. The first insulating shell 1 and the second insulating shell 61 are connected by a connecting component 8. The support ring 55 is squeezed by a compression component 7. The plug-in component 6 is connected to the connector 2 and the first insulating shell 1. The air injection component 5 is used so that after the plug-in component 6 is inserted into the interior of the first insulating shell 1, it cooperates with the compression component 7 to squeeze the support ring 55 and move, thereby injecting the compressed air inside the annular cavity 51 into the interior of the annular airbag 41, causing it to bulge and seal the gap between the first insulating shell 1 and the second insulating shell 61. Sealing assembly 4: includes an annular sealing airbag 41, an air guide tube 42, and an air guide channel 43. A first annular groove is provided at the left end of the first insulating shell 1. The annular sealing airbag 41 is fixed inside the first annular groove. The right end of the surface of the annular sealing airbag 41 has evenly distributed openings. The air guide tube 42 is fixed inside the openings. The edge of the first insulating shell 1 has evenly distributed air guide channels 43. The air guide tube 42 is fixed inside the corresponding air guide channel 43. All air guide channels 43 are connected to the air injection assembly 5. By setting the sealing assembly 4 in conjunction with the air injection assembly 5, the gap between the first insulating shell 1 and the second insulating shell 61 is sealed.
[0015] The working principle of the modular waterproof electrical connector provided by this utility model is as follows: When connection is required, the plug 62 of the plug assembly 6 is inserted into the left end of the first insulating shell 1, so that the plug 62 is engaged with the connector 2 to achieve electrical connection; at this time, by rotating the rotating ring 81 of the connecting assembly 8, the internal thread ring 82 is driven to be threaded and tightened with the surface thread of the first insulating shell 1 to ensure a stable connection between the two. During this process, the compression ring 71 of the compression assembly 7 moves to the right along with the second insulating shell 61, pushing the support ring 55 of the air injection assembly 5 to slide along the guide ring 72. The support ring 55 drives the fixing ring 53 and the rubber ring 52 to move to the right in the annular cavity 51 through the slide rod 54, compressing the air in the annular cavity 51. The compressed air is injected into the annular sealing airbag 41 of the sealing assembly 4 through the air guide channel 43 and the air guide pipe 42, causing it to expand and fill the annular gap between the first insulating shell 1 and the second insulating shell 61, forming a dynamic seal and effectively preventing moisture or dust from entering. When it is necessary to disconnect the connection, loosen the internal thread ring 82 and pull out the plug-in assembly 6. The compression ring 71 is removed, and the rubber ring 52 resets under air pressure or elasticity. The air in the annular sealing airbag 41 flows back and contracts, restoring its original state for easy reuse.
[0016] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A modular waterproof electrical connector, characterized in that: Includes a first insulating shell (1) and a sealing assembly (4); First insulating shell (1): A connector (2) is fixed inside. A first cable (3) is fixed at the right end inside the first insulating shell (1). The first cable (3) is connected to the connector (2). A plug-in assembly (6) is provided at the left end of the first insulating shell (1). A compression assembly (7) is installed at the right end of the plug-in assembly (6). The compression assembly (7) is located inside the first insulating shell (1). An air injection assembly (5) is installed at the right end inside the first insulating shell (1). The air injection assembly (5) is connected to the compression assembly (7). Sealing assembly (4): includes an annular sealing airbag (41), air guide tube (42) and air guide channel (43). The left end of the first insulating shell (1) is provided with a first annular groove. The annular sealing airbag (41) is fixed inside the first annular groove. The right end of the surface of the annular sealing airbag (41) is provided with a uniformly distributed opening. The air guide tube (42) is fixed inside the opening. The edge of the first insulating shell (1) is provided with a uniformly distributed air guide channel (43). The air guide tube (42) is fixed inside the corresponding air guide channel (43). All air guide channels (43) are connected to the air injection assembly (5).
2. The modular waterproof electrical connector according to claim 1, characterized in that: The gas injection assembly (5) includes an annular cavity (51), a rubber ring (52), a fixing ring (53), a slide rod (54), and a support ring (55). An annular cavity (51) is provided at the right end of the first insulating shell (1). The annular cavity (51) is connected to all the gas guiding channels (43). A rubber ring (52) is slidably connected inside the annular cavity (51). A fixing ring (53) is fixed at the left end of the rubber ring (52). A slide rod (54) is evenly distributed at the left end of the fixing ring (53). An evenly distributed sliding opening is opened at the left end of the annular cavity (51). The slide rod (54) is slidably connected inside the corresponding sliding opening. A support ring (55) is provided inside the first insulating shell (1). All slide rods (54) are fixed at the left end of the support ring (55).
3. A modular waterproof electrical connector according to claim 2, characterized in that: The plug assembly (6) includes a second insulating shell (61), a plug (62), and a second cable (63). The plug (62) is fixed at the right end inside the second insulating shell (61), and the second cable (63) is fixed at the left end inside the second insulating shell (61). The second cable (63) is connected to the plug (62). The plug (62) is snapped into the inside of the connector (2). A second annular groove is provided at the right end of the second insulating shell (61), and the annular sealing airbag (41) is located inside the second annular groove.
4. A modular waterproof electrical connector according to claim 3, characterized in that: The extrusion assembly (7) includes an extrusion ring (71) and a guide ring (72). The guide ring (72) is fixed inside the first insulating shell (1). The connector (2) is located inside the guide ring (72). The support ring (55) is sleeved on the circumferential surface of the guide ring (72). The extrusion ring (71) is sleeved on the left end of the circumferential surface of the guide ring (72). The extrusion ring (71) is fixed on the right end of the second insulating shell (61).
5. A modular waterproof electrical connector according to claim 3, characterized in that: It also includes a connecting component (8), which includes a swivel (81) and an internal threaded ring (82). The swivel (81) is fixed to the surface of the second insulating shell (61), and the right end of the swivel (81) is rotatably connected to the internal threaded ring (82), which is threaded to the left end of the surface of the first insulating shell (1).