Waterproof short-circuit connector

Abstract

This invention relates to the field of electrical connection technology, specifically a waterproof short-circuit connector, comprising a plastic shell, electrical terminals, a short-circuit conductive piece, an end cap, and connecting wires. The plastic shell has a plug end and a wiring terminal arranged sequentially along the insertion direction. Multiple terminal fixing slots are arranged along the non-plug direction of the plastic shell on the plug end, for mounting the electrical terminals. A short-circuit slot is provided in the insertion direction of the plug end, and the short-circuit conductive piece is disposed within the short-circuit slot and used to connect the electrical terminals in the same row. A first sealing element is provided on the outer periphery of the wiring terminal, and a second sealing element is provided on the inner periphery. The end cap is fitted onto the plug end and extends towards the wiring terminal. The first sealing element and the inner periphery of the end cap form a sealing abutment to seal the plug end. This invention, through a dual sealing structure of radial and axial forces, constitutes a robust waterproof barrier, greatly improving the long-term reliability and safety of the connector in harsh automotive environments such as humid and dusty conditions.

Description

Technical Field

[0001] This invention relates to the field of electrical connection technology, and in particular to a waterproof short-circuit connector. Background Technology

[0002] In automotive electronic systems, connectors serve as crucial hubs for power transmission and signal interaction, and their performance and reliability directly impact the safety and stable operation of the entire vehicle. Especially in circuits involving critical systems such as airbags and ABS, connectors with short-circuit functionality are often required to short-circuit the circuit when not in contact, preventing false signal triggering. Simultaneously, the automotive operating environment is becoming increasingly harsh, with connectors facing challenges such as high-pressure water washing, prolonged immersion in water, high humidity, and dust corrosion. Therefore, high-level waterproof sealing capabilities have become a core requirement for automotive connectors. Currently, most connector products on the market have relatively simple functions. Short-circuit functionality is typically achieved through external independent shorting strips or jumper caps, which not only increases the number of parts and assembly steps but also occupies additional layout space. Waterproof designs often rely on simple potting seals at the cable exit or the use of simple single-lip seals, whose sealing reliability and durability are often insufficient under extreme environments, easily leading to seal failure due to vibration and aging. Integrating both short-circuit and high-efficiency waterproof functions efficiently and reliably into a compact connector housing, while meeting the automotive industry's requirements for automated production, low cost, and high consistency, has always been a design challenge. Existing technical solutions are usually complex in structure, have many parts, are cumbersome to assemble, and are difficult to achieve stable and durable double sealing protection in a limited space. Summary of the Invention

[0003] To address the aforementioned issues, this invention incorporates a first sealing element on the outer periphery of the terminal block, forming a radial seal with the inner periphery of the end cap, effectively preventing external moisture and dust from intruding through the connection interface. Simultaneously, a second sealing element is provided on the inner periphery of the terminal block to provide an axial seal between the protruding connecting wire and the housing. This dual radial and axial sealing structure creates a robust waterproof barrier, significantly enhancing the long-term reliability and safety of the connector in harsh automotive environments such as humid and dusty conditions.

[0004] The technical solution adopted in this invention is as follows: a waterproof short-circuit connector, comprising a plastic shell, electrical terminals, a short-circuit conductive sheet, an end cap, and a connecting wire. The plastic shell has a plug end and a wiring terminal arranged sequentially along the plugging direction. The plug end has multiple terminal fixing slots arranged along the non-plugging direction of the plastic shell. The terminal fixing slots are used to install electrical terminals. The plug end has a short-circuit slot in the plugging direction. The short-circuit conductive sheet is disposed in the short-circuit slot and is used to connect electrical terminals in the same row. The wiring terminal has a first sealing element on its outer periphery and a second sealing element on its inner periphery. The end cap is sleeved on the plug end and extends toward the wiring terminal. The first sealing element and the inner periphery of the end cap seal against each other to seal the plug end. The connecting wire is disposed inside the electrical terminal and passes through the second sealing element to connect to the electrical terminal. The second sealing element is used to seal the inner periphery of the connecting wire and the wiring terminal.

[0005] A further improvement to the above solution is that the plastic shell is provided with snap-fit ​​grooves and snap-fit ​​elements on both sides. One end of the snap-fit ​​groove is connected to the terminal fixing groove. One end of the snap-fit ​​element is integrally formed on the side of the plastic shell, and the other end extends toward the snap-fit ​​groove and is provided with a snap-fit ​​part. The end cap presses the snap-fit ​​element toward the plastic shell, so that the snap-fit ​​part is pressed into the snap-fit ​​groove, and the terminal element is fixed in the terminal fixing groove.

[0006] A further improvement to the above solution is that a connecting protrusion is provided on the side of the plastic shell, and the connecting protrusion is used to connect the connecting end of the snap fastener; the thickness of the snap fastener gradually decreases from the snap fastening part to the connecting protrusion.

[0007] A further improvement to the above solution is that the plastic shell is provided with a clearance groove on one side of the connecting protrusion to accommodate the sinking of the snap fastener connection end.

[0008] A further improvement to the above solution is that assembly buckles are provided on both sides of the terminal block, and a snap-fit ​​portion extends from the end of the end cap. An assembly slot is provided on the snap-fit ​​portion, and the assembly slot is used to cooperate with the assembly buckles so that the end cap is fixedly fitted onto the outside of the plastic shell.

[0009] A further improvement to the above solution is that the end cap is provided with a protective cavity, which is used to fit the insertion end of the plastic shell. The protective cavity has pressing surfaces on both sides for pressing the pressing part of the pressing element into the pressing groove. Limiting platforms are provided on both sides of the protective cavity, which are used to abut the wiring end of the plastic shell to limit the insertion position of the end cap. The outer periphery of the first sealing element is provided with a first sealing lip, which has multiple layers and is used to abut the inner periphery of the end cap protective cavity.

[0010] A further improvement to the above scheme is that one end of the short-circuit slot is connected to the terminal fixing slot, the plug-in end of the power-connecting terminal is exposed in the short-circuit slot, the short-circuit conductive sheet is provided with plug-in pins, and the plug-in pins are used to insert into and contact the power-connecting terminal to short-circuit contact multiple power-connecting terminals.

[0011] A further improvement to the above solution is that a limiting part is provided near the port of the short-circuit slot, and a limiting piece is provided on the short-circuit conductive sheet to limit the short-circuit conductive sheet within the short-circuit slot; a tight-fitting protrusion is also provided on the side of the short-circuit conductive sheet to tightly fit the short-circuit conductive sheet within the short-circuit slot.

[0012] A further improvement to the above solution is that the power terminal includes a conductive plug portion for inserting into the short-circuit conductive sheet and a wiring portion for connecting to the connecting wire. The wiring portion extends toward the second seal and rivets the inner core of the connecting wire, the outer periphery of the connecting wire, and one end of the second seal.

[0013] A further improvement to the above solution is that the outer periphery of the second sealing member is provided with a second sealing lip, the second sealing lip being provided in multiple ways, and the inner periphery of the second sealing member is provided with a sealing lip, the sealing lip being used for sealing the outer periphery of the connecting wire.

[0014] The beneficial effects of this invention are:

[0015] Compared to existing waterproof short-circuit connectors, this invention integrates short-circuit and waterproof functions into one unit. By setting a short-circuit slot and embedding a short-circuit conductive piece at the plastic shell plug end, pre-short-circuit connections of multiple terminals can be easily achieved, meeting specific circuit configuration requirements. More importantly, a first sealing element is set on the outer periphery of the terminal to form a radial seal with the inner periphery of the end cap, effectively preventing external moisture and dust from entering through the plug interface; simultaneously, a second sealing element is set on the inner periphery of the terminal to provide an axial seal between the protruding connecting wire and the shell. Through the dual sealing structure of radial and axial seals, a tight waterproof barrier is formed, greatly improving the long-term reliability and safety of the connector in harsh automotive environments such as humid and dusty conditions. This invention integrates the short-circuit module into the plug end, eliminating the need for additional external short circuit breakers or jumpers, saving space and reducing the number of parts. The end cap serves as both an external protective shell and, together with the first sealing element, forms a crucial sealing interface, achieving multi-functionality of the component. This makes the overall connector structure very compact, conforming to the miniaturization trend of automotive electronics. Meanwhile, the clear modular design (plug-in assembly, terminal potting and sealing) helps simplify the assembly process, improve production efficiency, is suitable for automated assembly, and ensures product consistency and quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the waterproof short-circuit connector of the present invention; Figure 2 for Figure 1 An exploded view of a waterproof short-circuit connector; Figure 3 for Figure 1 An exploded view of the waterproof short-circuit connector from another perspective; Figure 4 for Figure 1 A top view of the plastic housing of the waterproof short-circuit connector; Figure 5 for Figure 1 Front view schematic diagram of a waterproof short-circuit connector; Figure 6 for Figure 5 Sectional view of AA; Figure 7 for Figure 5 A cross-sectional view of BB.

[0017] Explanation of reference numerals in the attached drawings: 1. Plastic shell; 11. Plug-in end; 111. Terminal fixing groove; 112. Short-circuit slot; 112. Limiting part; 113. Snap-on slot; 114. Connecting protrusion; 115. Clearance groove; 12. Wiring terminal; 121. Assembly snap-on; 122. Fixing slot; 13. Snap-on element; 131. Fixing snap-on; 1311. Electrical terminal; 2. Conductive plug-in part; 22. Wiring part; 3. Short-circuit conductive piece; 31. Plug-in pin; 32. Limiting piece; 33. Tight-fitting protrusion; 4. End cap; 41. Snap-in part; 411. Assembly slot; 42. Protective cavity; 42. Pressing surface; 422. Limiting platform; 5. Connecting wire; 6. First sealing element; 61. First sealing outer lip; 7. Second sealing element; 71. Second sealing outer lip; 72. Sealing inner lip. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] 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. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figures 1-7 As shown, in one embodiment of the present invention, a waterproof short-circuit connector is provided, including a plastic shell 1, electrical terminals 2, a short-circuit conductive sheet 3, an end cap 4, and a connecting wire 5. The plastic shell 1 is provided with a plug end 11 and a terminal 12 in sequence along the plugging direction. The plug end 11 is provided with a plurality of terminal fixing slots 111 arranged along the non-plugging direction of the plastic shell 1. The terminal fixing slots 111 are used to install the electrical terminals 2. The plug end 11 is provided with a short-circuit slot 112 in the plugging direction. The short-circuit conductive sheet 3 is provided in the short-circuit... The slot 112 is used to connect the electrical terminals 2 in the same row. A first sealing element 6 is provided on the outer periphery of the terminal 12, and a second sealing element 7 is provided on the inner periphery. The end cap 4 is fitted onto the plug-in end 11 and extends towards the terminal 12. The first sealing element 6 and the inner periphery of the end cap 4 seal against each other to close the plug-in end 11. The connecting wire 5 is located inside the electrical terminal and passes through the second sealing element 7 to connect to the electrical terminal 2. The second sealing element 7 is used to seal the connecting wire 5 and the inner periphery of the connector. This embodiment integrates short-circuit and waterproof functions. By providing a short-circuit slot 112 and a built-in short-circuit conductive sheet 3 in the plug-in end 11 of the plastic shell 1, pre-short-circuit connection of multiple terminals can be easily achieved, meeting specific circuit configuration requirements. More importantly, a first seal 6 is provided on the outer periphery of the terminal 12, forming a radial seal with the inner periphery of the end cap 4, effectively preventing external moisture and dust from entering through the insertion interface. Simultaneously, a second seal 7 is provided on the inner periphery of the terminal 12, providing an axial seal between the protruding connecting wire 5 and the housing. This dual radial and axial sealing structure constitutes a robust waterproof barrier, greatly improving the long-term reliability and safety of the connector in harsh automotive environments such as humid and dusty conditions. In this embodiment, the short-circuit module is built into the insertion terminal 11, eliminating the need for additional external short-circuit devices or jumpers, saving space and reducing the number of parts. The end cap 4 serves as both an external protective shell and, together with the first seal 6, forms a crucial sealing interface, achieving multi-functionality of the component. This results in a very compact overall connector structure, conforming to the miniaturization trend in automotive electronics. Furthermore, the clear modular design (insertion terminal assembly, terminal potting and sealing) simplifies the assembly process, improves production efficiency, is suitable for automated assembly, and ensures product consistency and quality.

[0022] The plastic shell 1 has snap-fit ​​grooves 113 and snap-fit ​​elements 13 on both sides. One end of the snap-fit ​​groove 113 is connected to the terminal fixing groove 111. One end of the snap-fit ​​element 13 is integrally formed on the side of the plastic shell 1, and the other end extends toward the snap-fit ​​groove 113 and is provided with a snap-fit ​​part 131. The end cap 4 presses the snap-fit ​​element 13 toward the plastic shell 1, so that the snap-fit ​​part 131 is pressed into the snap-fit ​​groove 113, fixing the terminal element in the terminal fixing groove 111. This embodiment introduces a high-performance terminal locking mechanism based on short-circuit and waterproof functions. By integrally forming elastic snap-fit ​​elements 13 with snap-fit ​​parts 131 on both sides of the plastic shell 1, and correspondingly providing snap-fit ​​grooves 113, when the end cap 4 is assembled, it presses the snap-fit ​​element 13 inward, forcing the snap-fit ​​part 131 to be pressed into and locked in the snap-fit ​​groove 113, thereby directly locking the terminal element from the side. This design creates a one-way anti-retraction mechanism that effectively resists the impact of continuous vehicle vibration on the terminals, preventing them from loosening or coming off, and ensuring ultimate reliability of the electrical connection in harsh environments. No additional parts or operations are required, simplifying the production process.

[0023] The side of the plastic shell 1 is provided with a connecting protrusion 114, which is used to connect the connecting end of the snap-fit ​​element 13; the thickness of the snap-fit ​​element 13 gradually decreases from the snap-fit ​​part 131 to the connecting protrusion 114. This embodiment optimizes the locking structure. The connecting protrusion 114 serves as the base of the snap-fit ​​element 13, enhancing the structural strength and injection molding reliability at the root connection and preventing breakage after repeated bending. The snap-fit ​​element 13 adopts a design where the thickness gradually decreases from the snap-fit ​​part 131 to the connecting protrusion 114, forming a gradient structure. This ensures that the snap-fit ​​part 131 maintains sufficient rigidity to effectively press the terminal while the root has optimal elasticity, making it easier to be bent and deformed by the end cap 4. This reduces the assembly force required for the end cap 4, making assembly easier and smoother.

[0024] The plastic shell 1 has a recessed groove 115 on one side of the connecting protrusion 114 to accommodate the sinking of the connecting end of the snap-fit ​​element 13. In this embodiment, the recessed groove 115 provides deformation space for the movement of the root of the snap-fit ​​element 13. When the snap-fit ​​element 13 is bent by the end cap 4, its connecting end can sink into the recessed groove 115, avoiding rigid interference with the main structure of the plastic shell 1. This ensures that the snap-fit ​​element 13 can complete its full stroke with smooth and unobstructed elastic deformation, thereby ensuring that the snap-fit ​​portion 131 at its end can accurately and completely reach the designed locking position and fully press the terminal. This design eliminates the risk of improper assembly, insufficient locking force, or damage to parts due to structural interference.

[0025] Assembly buckles 121 are provided on both sides of the terminal 12. A snap-fit ​​portion 41 extends from the end of the end cap 4, and an assembly slot 411 is provided on the snap-fit ​​portion 41. The assembly slot 411 is used to engage with the assembly buckles 121, so that the end cap 4 is fixedly fitted onto the outside of the plastic shell 1. This embodiment achieves a quick, secure, and tool-free snap-fit ​​connection between the end cap 4 and the plastic shell 1 through the engagement of the assembly buckles 121 and the assembly slots 411. This simplifies the assembly process, improves production efficiency, and is suitable for automated assembly lines. When the end cap 4 is pushed to the predetermined position, the engagement of the buckles and slots provides tactile feedback, facilitating operator confirmation of proper assembly. Reliably fixing the end cap 4 to the plastic shell 1 ensures that its internal sealing surface remains stably pressed against the first sealing element 6, maintaining a durable waterproof effect.

[0026] The end cap 4 is provided with a protective cavity 42, which is used to fit the plug end 11 of the plastic shell 1. The protective cavity 42 has pressing surfaces 421 on both sides to press the pressing part 131 of the pressing element 13 into the pressing groove 113. Limiting platforms 422 are provided on both sides of the protective cavity 42 to abut against the wiring end 12 of the plastic shell 1, limiting the insertion position of the end cap 4. A first sealing lip 61 is provided on the outer periphery of the first sealing member 6. The first sealing lip 61 has multiple layers and abuts against the inner periphery of the protective cavity 42 of the end cap 4. In this embodiment, the protective cavity 42 of the end cap 4 provides physical protection to prevent foreign objects from directly impacting the plug end 11. Secondly, the pressing surfaces 421 inside the cavity are responsible for simultaneously pressing all pressing elements 13 during assembly, achieving collective locking of the terminals. Third, the limiting stage 422 acts as a mechanical stop, ensuring that the end cap 4 is always installed in the correct position, thus guaranteeing the accuracy of the compression depth and sealing compression. Fourth, in conjunction with the first sealing element 6, which has multiple first sealing lips 61, it forms multiple redundant radial sealing defenses. The multiple sealing lips greatly increase the sealing contact area and path; even if one sealing lip fails, the others can still provide an effective seal, greatly enhancing the reliability of waterproofing and resisting the impact of high-pressure water flow.

[0027] One end of the short-circuit slot 112 is connected to the terminal fixing slot 111. The insertion end of the power-connecting terminal 2 is exposed in the short-circuit slot 112. The short-circuit conductive piece 3 is provided with insertion pins 31, which are used to insert into and contact the power-connecting terminal 2 to short-circuit multiple power-connecting terminals 2. In this embodiment, by connecting the short-circuit slot 112 to the terminal fixing slot 111, the insertion ends of the power-connecting terminals 2 are exposed side by side in the slot. The independent short-circuit conductive piece 3 is inserted into the short-circuit slot 112 like a plug through its insertion pins 31, and simultaneously achieves physical contact and electrical connection with multiple target terminals, thereby realizing a circuit short circuit. By integrating the short-circuit function as an independent component, users can flexibly decide whether to install the short-circuit piece according to circuit requirements, meeting the diverse needs of automotive wiring configuration. The function is simple, reliable, and low-cost to implement.

[0028] A limiting part 1121 is provided near the port of the short-circuit slot 112, and a limiting piece 32 is provided on the short-circuit conductive piece 3 to limit the short-circuit conductive piece 3 within the short-circuit slot 112. A tight-fitting protrusion 33 is also provided on the side of the short-circuit conductive piece 3 to tightly fit the short-circuit conductive piece 3 within the short-circuit slot 112. In this embodiment, the cooperation between the limiting part 1121 and the limiting piece 32 ensures that the short-circuit conductive piece 3 can only be inserted to the designed depth, preventing over-insertion that could cause bending, damage, or improper contact of the plug pin 31, thus ensuring the accuracy and stability of the electrical connection. The tight-fitting protrusion 33 creates an interference fit between the short-circuit conductive piece 3 and the inner wall of the short-circuit slot 112, generating sufficient friction and gripping force. This effectively resists strong vibrations and impacts during vehicle operation, preventing the short-circuit conductive piece 3 from fretting, loosening, or even falling off within the slot, ensuring the long-term durability of the short-circuit state and fully meeting the vibration resistance requirements of automotive applications.

[0029] The electrical terminal 2 includes a conductive plug portion 21 that inserts into the short-circuit conductive piece 3 and a wiring portion 22 for connecting to the connecting wire 5. The wiring portion 22 extends toward the second seal 7 and rivets the inner core of the connecting wire 5, the outer periphery of the connecting wire 5, and one end of the second seal 7. In this embodiment, the connection process and sealing of the electrical terminal 2 and the connecting wire 5 are integrated. The terminal adopts a split design; the conductive plug portion 21 is responsible for connecting to the short-circuit piece, while the wiring portion 22 is dedicated to cable connection. One end of the second seal 7 is directly incorporated into the riveting area of ​​the wiring portion 22 along with the stripped connecting wire 5 (inner core and outer periphery insulation). Through the riveting process, the electrical connection of the inner core of the conductor, the mechanical fixation of the outer sheath of the conductor, and the end fixation of the second seal 7 are achieved in one step. The riveting seal design greatly enhances the cable pull-out force, eliminates potential leakage points between the seal and the terminal, and forms an extremely robust and sealed connection node.

[0030] The second sealing element 7 has a second sealing lip 71 on its outer periphery, and multiple second sealing lips 71 are provided. The second sealing element 7 also has a sealing lip 72 on its inner periphery, which is used for sealing the outer periphery of the connecting wire 5. In this embodiment, multiple second sealing lips 71 are provided on the outer periphery of the second sealing element 7, forming multiple radial seals with the inner wall of the terminal 12 of the plastic shell 1, effectively preventing liquid penetration along this interface. The sealing lip 72 on its inner periphery tightly wraps around the outer insulation layer of the connecting wire 5, forming an axial seal to prevent liquid from seeping into the connector along the cable surface. The combination of multiple outer periphery seals and a single inner periphery seal constitutes an extremely reliable seal for the cable lead-out direction, ensuring that even if the connector is briefly submerged in water, moisture cannot penetrate into the device through the cable interface, providing the highest level of waterproof protection.

[0031] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A waterproof short-circuit connector, characterized in that: The device includes a plastic shell, electrical terminals, a short-circuit conductive plate, an end cap, and connecting wires. The plastic shell has a plug-in end and a wiring terminal arranged sequentially along the insertion direction. The plug-in end has multiple terminal fixing slots arranged along the non-plug-in direction of the plastic shell. These terminal fixing slots are used to install electrical terminals. The plug-in end has a short-circuit slot along its insertion direction. The short-circuit conductive plate is disposed within the short-circuit slot and is used to connect electrical terminals in the same row. The wiring terminal has a first sealing element on its outer periphery and a second sealing element on its inner periphery. The end cap is fitted over the plug-in end. Extending towards the terminal, the first seal abuts against the inner circumference of the end cap to seal the plug-in end; the connecting wire is disposed inside the power-connecting end and passes through the second seal to connect to the power-connecting terminal, the second seal being used to seal the connecting wire and the inner circumference of the terminal part; one end of the short-circuit slot is connected to the terminal fixing slot, the plug-in end of the power-connecting terminal is exposed in the short-circuit slot, the short-circuit conductive sheet is provided with plug-in pins, the plug-in pins being used to insert into and contact the power-connecting terminal to short-circuit contact multiple power-connecting terminals.

2. The waterproof short-circuit connector according to claim 1, characterized in that: The plastic shell has snap-fit ​​grooves and snap-fit ​​elements on both sides. One end of the snap-fit ​​groove is connected to the terminal fixing groove. One end of the snap-fit ​​element is integrally formed on the side of the plastic shell, and the other end extends toward the snap-fit ​​groove and is provided with a snap-fit ​​part. The end cap presses the snap-fit ​​element toward the plastic shell, so that the snap-fit ​​part is pressed into the snap-fit ​​groove, and the terminal element is fixed in the terminal fixing groove.

3. The waterproof short-circuit connector according to claim 2, characterized in that: The side of the plastic shell is provided with a connecting protrusion, which is used to connect the connecting end of the snap fastener; the thickness of the snap fastener gradually decreases from the snap fastener part to the connecting protrusion.

4. The waterproof short-circuit connector according to claim 3, characterized in that: The plastic shell has a clearance groove on one side of the connecting protrusion to accommodate the sinking of the snap fastener connection end.

5. The waterproof short-circuit connector according to claim 1, characterized in that: The terminals are provided with assembly buckles on both sides, and the end cap extends to a snap-fit ​​portion. The snap-fit ​​portion is provided with an assembly slot, which is used to engage with the assembly buckles so that the end cap is fixedly fitted onto the outside of the plastic shell.

6. The waterproof short-circuit connector according to claim 1, characterized in that: The end cap is provided with a protective cavity for inserting the plug end of the plastic shell. The protective cavity has pressing surfaces on both sides for pressing the snap fastening part of the snap fastening element into the snap fastening groove. The protective cavity has limiting platforms on both sides for abutting the wiring end of the plastic shell to limit the insertion position of the end cap. The outer periphery of the first sealing element is provided with a first sealing lip, which has multiple layers and abuts the inner periphery of the end cap protective cavity.

7. The waterproof short-circuit connector according to claim 1, characterized in that: The short-circuit slot is provided with a limiting part near the port, and the short-circuit conductive sheet is provided with a limiting piece to limit the short-circuit conductive sheet in the short-circuit slot; the side of the short-circuit conductive sheet is also provided with a tight-fitting protrusion to tightly fit the short-circuit conductive sheet in the short-circuit slot.

8. The waterproof short-circuit connector according to claim 1, characterized in that: The electrical terminal includes a conductive plug portion that plugs into a short-circuit conductive sheet and a wiring portion for connecting to a connecting wire. The wiring portion extends toward the second seal and rivets the inner core of the connecting wire, the outer periphery of the connecting wire, and one end of the second seal.

9. The waterproof short-circuit connector according to claim 8, characterized in that: The second seal has a second sealing lip on its outer periphery, and the second sealing lip has multiple layers. The second seal has a sealing lip on its inner periphery, and the sealing lip is used to seal the outer periphery of the connecting wire.

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