Insulation quick connector and use method thereof

Abstract

The invention discloses an insulating quick connector and a using method thereof, and belongs to the technical field of electrical connection. The insulating quick connector comprises a positioning sleeve, a clamping plate assembly and a pre-tightening bolt; a wiring hole is formed in one end of the positioning sleeve, the clamping plate assembly comprises an upper clamping plate and a lower clamping plate which can be opened and closed relatively, one ends of the upper clamping plate and the lower clamping plate are hinged to the positioning sleeve through a first hinge part and hinged to each other through a second hinge part, and the pre-tightening bolt penetrates through the second hinge part and is in threaded fit with the second hinge part; the upper clamping plate and the lower clamping plate respectively comprise a metal terminal and an insulating terminal housing, one end of each metal terminal is provided with a wiring end with a fixing hole, and the other end is provided with a wire pressing groove. Various special tools are not needed, the wiring process is simplified through guiding, pre-tightening and pressing, and the efficiency is improved; the pre-tightening structure prevents the lead from falling off and ensures accurate connection; insulation protection is integrated, and the protection effect is stable; the detachable structure is convenient to overhaul, can be reused to reduce the cost, is suitable for various wires and external equipment, and is suitable for various electrical connection scenes.

Description

Technical Field

[0001] This invention relates to the field of electrical connection technology, specifically to an insulated quick connector for wire connection, which is particularly suitable for power wiring applications requiring quick wiring, anti-loosening, and good insulation performance. Background Technology

[0002] In the field of electrical connections, the reliability of the connection between wires and external equipment (such as electrical components, terminals, and equipment terminals) directly affects the stable operation of the entire circuit system. Copper lugs, as a commonly used wire connection accessory, are widely used in various electrical wiring scenarios, especially suitable for occasions where a secure connection between wires and external equipment is required.

[0003] Currently, when using copper lugs for wire connection, a fixed operating procedure must be followed. The wiring steps are cumbersome and require a certain level of proficiency. The specific operating procedure is as follows: First, the operator must use wire strippers or similar tools to strip the insulation from the end of the wire, ensuring the exposed metal conductor matches the length of the connection hole. Improper force control during stripping can easily damage the metal conductor or result in excessive / insulation stripping, affecting the subsequent connection. Next, after inserting the exposed metal conductor into the copper lug connection hole, it is necessary to… Use specialized tools such as crimping pliers to firmly press and secure the copper lug to the wire. During the pressing process, ensure that the pressure is even; otherwise, problems such as poor contact and excessive resistance may occur, or even the copper lug may deform or the wire may break due to excessive pressure. Finally, to achieve insulation protection, heat shrink tubing needs to be fitted over the copper lug, and hot air should be blown by a hot air blower to shrink and fit the tubing. This step requires an additional hot air blower, and the hot air temperature and blowing time must be strictly controlled. If the temperature is too high, it may damage the insulation layer of the wire; if the temperature is too low, the heat shrink tubing will not shrink sufficiently, and the ideal insulation protection effect will not be achieved.

[0004] Besides being cumbersome, the aforementioned copper lug wiring method has the following significant drawbacks: First, it requires a variety of tools, including wire strippers, connector pliers, and heat guns, which are inconvenient to carry and operate, especially in outdoor operations and emergency repairs, where the carrying and use of tools are limited, leading to low wiring efficiency. Second, the entire wiring process relies on manual operation, and the standardization of the operation process directly affects the wiring quality. Different operators have significantly different levels of proficiency, which can easily lead to problems such as loose connections, poor contact, and inadequate insulation protection, resulting in safety hazards such as excessive circuit contact resistance, overheating, and short circuits, which may even lead to equipment failure or safety accidents in severe cases. Third, the wiring process is time-consuming, with each step requiring separate operation, making it impossible to achieve rapid wiring. In large-scale wiring operations or emergency repair scenarios, it is difficult to meet the demand for efficient wiring. Fourth, copper lug wiring is a one-time connection structure. If the wire needs to be replaced or repaired later, the copper lug and heat shrink tubing must be damaged, which is inconvenient to disassemble. Moreover, the copper lug cannot be reused after disassembly, resulting in material waste and increased wiring costs.

[0005] In view of the problems existing in the above-mentioned copper lug wiring technology, such as complicated wiring, many tools required, low wiring efficiency, wiring quality being easily affected by manual operation, inconvenient disassembly and high cost, there is currently no wire connection device that can effectively solve the above defects. Therefore, developing an insulated quick connector with simple structure, convenient operation, no need for too many special tools, high wiring efficiency and reliable connection has become an urgent technical problem to be solved in the current electrical connection field. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides an insulated quick connector and a method of using the same.

[0007] The technical solution adopted in this invention is: an insulated quick connector, comprising: A positioning sleeve, one end of which is provided with a wiring hole for wires to be inserted; The clamping plate assembly includes an upper clamping plate and a lower clamping plate that can be opened and closed relative to each other. One end of the upper clamping plate and the lower clamping plate are hinged to one end of the positioning sleeve through a first hinge portion, and the upper clamping plate and the lower clamping plate are hinged together through a second hinge portion. A pre-tightening bolt passes through a hinge hole provided in the second hinge portion and engages with a threaded hinge hole on at least one of the second hinge portions; Both the upper and lower clamping plates include metal terminals and insulating terminal covers; one end of the metal terminal is provided with a wiring terminal for connecting to external equipment, and the wiring terminal is provided with a fixing hole, and the other end of the metal terminal is provided with a wire pressing groove.

[0008] Furthermore, the wire pressing grooves on the metal terminals of the upper clamping plate and the metal terminals of the lower clamping plate together form a wire pressing channel that matches the shape of the wire when the upper clamping plate and the lower clamping plate are closed. The inner surface of the wire pressing groove is provided with anti-slip texture or puncture protrusions. One of the metal terminals has a sealing groove on the outer ring of its wire groove, and a sealing strip is provided inside the sealing groove. The other metal terminal has a sealing protrusion on the outer ring of its wire groove that matches the sealing groove.

[0009] Furthermore, the second hinge portion includes a second hinge lug and a third hinge lug respectively disposed at the ends of the upper clamping plate and the lower clamping plate; the preload bolt passes through the hinge holes on the second and third hinge lugs in sequence.

[0010] Furthermore, the positioning sleeve is divided into an upper sleeve and a lower sleeve, and the first hinge part includes a first hinge lug on the upper sleeve and the lower sleeve and a connecting shaft on the insulating terminal cover. The connecting shaft is rotatably engaged with the rotating hole on the first hinge lug.

[0011] Furthermore, the upper sleeve and the upper clamping plate are provided with elastic connecting hooks on their insulating terminal covers, and the lower sleeve and the lower clamping plate are provided with snap-fit ​​grooves that connect with the elastic connecting hooks on their insulating terminal covers.

[0012] Furthermore, a flexible sealing sheet is provided on the wiring hole.

[0013] Furthermore, at least a portion of the positioning sleeve and / or the insulating terminal cover is made of a thermochromic material, and is provided with phase color markings including red, yellow, green and black; when the surface temperature of this part of the structure reaches a preset temperature, its color can turn white.

[0014] Furthermore, the fixing holes for the wiring terminals on the upper and / or lower clamps are U-shaped holes.

[0015] This application also provides a wiring method using, for example, an insulated quick-connect connector, comprising the following steps: S1. Insert the end of the wire through the wiring hole of the positioning sleeve and extend it into the wire pressing channel formed by the wire pressing grooves of the upper and lower clamping plates. S2. Tighten the pre-tightening bolt to generate a pre-tightening force on the wire by the upper and lower clamping plates to prevent the wire from coming out. S3. Align the wiring terminals of the upper and lower clamping plates with the wiring terminals of the external device; S4. Pass the fastening bolt through the fixing holes of the terminal block and the external device terminal block, and tighten the fastening bolt to close the upper clamp plate and the lower clamp plate, so as to press and fix the wire through the wire pressing groove, and at the same time realize the electrical connection between the terminal block and the external device terminal block.

[0016] Furthermore, when using an insulated quick connector with piercing protrusions, it is not necessary to strip the wire ends before inserting the wires into the wiring holes. The crimping grooves can pierce or compress the insulation layer of the wires to achieve electrical connection when closed.

[0017] The beneficial effects of this invention are: 1. Simplified wiring process and improved wiring efficiency without relying on multiple special tools: This invention only requires inserting the wire from the wiring hole of the positioning sleeve into the wire pressing groove of the upper and lower clamps, pre-positioning the wire by tightening the pre-tightening bolt, and then tightening the upper and lower clamps with the fastening bolt to complete the wire clamping and fixing. The entire wiring process is simplified and does not require the use of multiple tools such as wire pliers and hot air blowers, reducing the tool carrying and operation threshold. It is especially suitable for outdoor operations, emergency repairs and other scenarios, which greatly shortens the wiring time of a single wire and significantly improves the overall efficiency of large-scale wiring operations.

[0018] 2. High connection reliability, reduced safety hazards, and unaffected by operator skill level: On one hand, the pre-tightening bolts allow for pre-positioning of the wires, effectively preventing wire detachment or misalignment during subsequent clamping, ensuring precise contact between the wires and the metal terminal's crimping groove. On the other hand, tightening the upper and lower clamps with the bolts creates a uniform and stable clamping force on the wires, guaranteeing good contact between the wires and the metal terminals. Furthermore, standardized bolting operations do not rely on operator skill, effectively mitigating wiring quality instability caused by variations in manual operation and significantly reducing safety hazards in the circuit system.

[0019] 3. Integrated insulation protection function, stable protection effect, no need for additional insulation structure: The upper and lower clamps of this invention are equipped with insulating terminal covers. Except for the wiring terminals, all metal terminals are wrapped by insulating terminal covers, which can directly achieve insulation protection of the wiring parts. Unlike existing copper lug wiring, there is no need to use heat shrink tubing and hot air shrinking treatment. This not only simplifies the operation process, but also avoids the risk of protection failure such as insufficient shrinkage of heat shrink tubing and high temperature damage to the wire insulation layer. The insulation protection effect is more stable and more durable, and can effectively adapt to the insulation requirements under different working conditions.

[0020] 4. Easy disassembly and assembly, reusable, and reduced wiring costs: This invention adopts a detachable structure with bolt fastening. When the wire needs to be replaced or repaired, only the fastening bolts and pre-tightening bolts need to be loosened to easily remove the wire without damaging the connector body. The connector can be reused multiple times, which greatly reduces material waste compared to disposable copper lugs. At the same time, the disassembly and assembly process does not require special tools, making the operation convenient and reducing the labor and material costs of subsequent maintenance and repair, thus improving the maintenance convenience of the circuit system.

[0021] 5. The structure is reasonably designed, highly adaptable, and applicable to a wide range of scenarios: the wiring holes of the positioning sleeve can be adapted to wires of different diameters, and the wire pressing grooves of the upper and lower clamps can be designed to adapt to wire specifications, meeting the connection needs of wires with various cross-sectional sizes; and the wiring terminals of the metal terminals are fixed to external devices through fixing holes, making the connection method universal and adaptable to various external devices such as electrical components, terminals, and equipment terminals. It is suitable for various electrical connection scenarios such as industrial electrical, civil electrical, and emergency circuits, and has strong versatility and adaptability.

[0022] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is an exploded view of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of a metal terminal.

[0026] Figure 4 This is a schematic diagram of one of the metal terminals.

[0027] Figure 5 This is a schematic diagram of another metal terminal.

[0028] Figure 6 This is a schematic diagram of a connector with dual mounting holes.

[0029] Figure 7 This is a schematic diagram of a connector with a single fixing hole.

[0030] Figure 1-7 In the middle: 1. Positioning sleeve; 2. Wiring hole; 3. Upper clamping plate; 4. Lower clamping plate; 5. Pre-tightening bolt; 6. Hinge hole; 7. Metal terminal; 8. Insulating terminal cover; 9. Wiring terminal; 10. Fixing hole; 11. Wire groove; 12. Anti-slip texture; 13. Piercing protrusion; 14. Sealing groove; 15. Sealing protrusion; 16. First hinge ear; 17. Second hinge ear; 18. Third hinge ear; 19. Second hinge part; 20. Upper half sleeve; 21. Lower half sleeve; 22. Rotating hole; 23. Connecting shaft; 24. Elastic connecting hook; 25. Fastening groove; 26. Flexible sealing sheet; 27. Fastening bolt; 28. First hinge part. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] This invention provides an insulated quick connector.

[0034] In this embodiment, refer to Figure 1-7 The insulated quick connector includes: Positioning sleeve 1, one end of which is provided with a wiring hole 2 for wires to be inserted; The clamping plate assembly includes an upper clamping plate 3 and a lower clamping plate 4 that can be opened and closed relative to each other. One end of the upper clamping plate and the lower clamping plate are hinged to one end of the positioning sleeve through a first hinge part 28, and the upper clamping plate and the lower clamping plate are hinged together through a second hinge part 19. The pre-tightening bolt 5 passes through the hinge hole 6 provided in the second hinge part and is threadedly engaged with at least one hinge hole on the second hinge part; Both the upper and lower clamping plates include metal terminals 7 and insulating terminal covers 8; one end of the metal terminal 7 is provided with a wiring terminal 9 for connecting to external equipment, and the wiring terminal is provided with a fixing hole 10; the other end of the metal terminal is provided with a wire pressing groove 11.

[0035] In the above technical solution, the wiring hole of the positioning sleeve is used to guide and position the wire, ensuring that the wire accurately extends into the preset position. The hinged structure of the upper and lower clamping plates and the positioning sleeve in the clamping plate assembly provides rotational support for the opening and closing of the clamping plates. Combined with the threaded engagement of the pre-tightening bolt and the hinged hole, the pre-tightening positioning of the inserted wire is achieved by tightening the bolt. The upper and lower clamping plates include metal terminals and insulating terminal covers. The wire-pressing grooves of the metal terminals are used for tight contact with the wire to achieve electrical connection, the fixing holes of the wiring terminals are used for docking with external equipment, and the insulating terminal covers provide protection for the metal terminals, preventing insulation failure. The overall structure achieves rapid electrical connection between the wire and external equipment through the logic of "guiding-pre-tightening-pressurizing fixation".

[0036] Therefore, the cumbersome wiring of existing copper lugs can be eliminated without the need for multiple tools; wiring can be completed simply by bolting, greatly simplifying the process and improving wiring efficiency. The pre-tightening structure effectively prevents the wire from coming loose during the tightening process, ensuring wiring accuracy and avoiding connection deviations caused by human error. Integrated insulation protection eliminates the need for additional insulation structures such as heat shrink tubing, providing stable protection and reducing the risk of protection failure. The modular design is compatible with various wires and external devices, offering strong versatility and wide applicability to various electrical connection scenarios. The detachable bolt connection structure facilitates subsequent maintenance and replacement, and the connector can be reused, reducing wiring costs.

[0037] The pre-tightening bolt can be a torque bolt, set at 2-5 N·m according to the operating conditions, making it easy to break by hand. This provides the pre-tightening effect and also acts as a hinge pin. Furthermore, to ensure the pre-tightening bolt discharges, the break point of the torque bolt can be placed inside the positioning sleeve or insulating terminal housing, so that the remaining part after breakage is hidden inside the insulating cover, preventing discharge and ensuring the safe operation of the connection point.

[0038] Specifically, the wire pressing grooves 11 on the metal terminals of the upper clamping plate and the metal terminals of the lower clamping plate together form a wire pressing channel that is adapted to the shape of the wire when the upper clamping plate and the lower clamping plate are closed. The inner surface of the wire pressing groove is provided with anti-slip texture 12 or piercing protrusions 13. One of the metal terminals has a sealing groove 14 on the outer ring of its wire groove, and a sealing strip is provided in the sealing groove 14. The other metal terminal has a sealing protrusion 15 on the outer ring of its wire groove that is adapted to the sealing groove.

[0039] In this embodiment, when the upper and lower clamps are closed, the wire pressing grooves together form a wire pressing channel that matches the shape of the wire, ensuring a snug fit to the wire. The anti-slip texture on the inner surface of the wire pressing grooves increases friction and improves the stability of the wire fixation. When a piercing protrusion structure is used, it can directly penetrate the wire insulation layer, achieving direct contact between the metal terminal and the wire conductor. At the same time, through the cooperation of the sealing groove and the sealing protrusion, a sealing structure is formed on the outer ring of the wire pressing channel, and the sealing strip fills the gap, preventing external moisture and dust from entering.

[0040] Specifically, the second hinge portion includes a second hinge lug 17 and a third hinge lug 18 respectively disposed at the ends of the upper clamping plate and the lower clamping plate; the pre-tightening bolt passes through the hinge holes on the second and third hinge lugs in sequence.

[0041] In this embodiment, the second hinge portion specifically includes a second hinge lug and a third hinge lug respectively disposed at the ends of the upper and lower clamping plates. The two hinge lugs are arranged in a relatively superimposed manner. The pre-tightening bolt passes through the hinge holes on the second and third hinge lugs in sequence, and the pre-tightening bolt forms a threaded engagement with the hinge hole of at least one of the hinge lugs. The locking force generated by tightening the pre-tightening bolt limits the pre-tightening of the wire extending into the wire groove, while the hinge structure provides stable rotational support for the opening and closing of the upper and lower clamping plates.

[0042] To improve connection strength, the hinge holes on the metal terminals can be used as threaded holes for threaded connection with preloaded bolts.

[0043] Specifically, the positioning sleeve is divided into an upper sleeve 20 and a lower sleeve 21. The first hinge part includes a first hinge lug 16 on the upper sleeve and the lower sleeve and a connecting shaft 23 on the insulating terminal cover. The connecting shaft 23 is rotatably engaged with the rotating hole 22 on the first hinge lug.

[0044] In this embodiment, the positioning sleeve is divided into an upper sleeve and a lower sleeve, which respectively mate with the upper clamping plate and the lower clamping plate. The first hinge part includes a first hinge lug provided on the upper sleeve and the lower sleeve, and a connecting shaft provided on the insulating terminal cover. The first hinge lug is provided with a rotating hole, and the connecting shaft and the rotating hole form a rotatable fit, realizing a one-to-one rotatable connection between the upper sleeve and the upper clamping plate, and between the lower sleeve and the lower clamping plate, so that the upper and lower sleeves can rotate with the opening and closing of the corresponding clamping plates.

[0045] Specifically, the upper sleeve and the upper clamping plate are provided with elastic connecting hooks 24 on their insulating terminal covers, and the lower sleeve and the lower clamping plate are provided with snap-fit ​​grooves 25 that connect with the elastic connecting hooks 24 on their insulating terminal covers.

[0046] In this embodiment, elastic connecting hooks and fastening grooves are respectively provided on the insulating terminal covers of the upper and lower half sleeves and the corresponding upper and lower clamping plates. When the clamping plates are closed and the sleeve is closed, the elastic hooks can be engaged into the fastening grooves through their own elastic deformation, so as to realize the detachable fixation of the sleeve and the clamping plates and enhance the integrity of the overall structure.

[0047] Specifically, a flexible sealing sheet 26 is provided on the wiring hole.

[0048] In this embodiment, a flexible sealing sheet is provided at the wiring hole. The sealing sheet has a certain elasticity. When the wire passes through, it can conform to the surface of the wire through its own deformation, fill the gap between the wire and the wiring hole, and at the same time prevent external impurities from entering the wiring hole.

[0049] Specifically, at least a portion of the positioning sleeve and / or the insulating terminal cover is made of a thermochromic material, and is provided with phase color markings including red, yellow, green and black; when the surface temperature of this part of the structure reaches a preset temperature, its color can turn white.

[0050] In this embodiment, a thermochromic material is used to fabricate part of the positioning sleeve and / or insulating terminal housing. This material has temperature-sensitive properties; when the surface temperature exceeds a preset temperature (e.g., 90°C), the molecular structure changes, causing the color to turn white. Simultaneously, red, yellow, green, and black phase color indicators are provided to easily distinguish wire polarity and circuits. The temperature-changing color and phase color indicators work together to achieve visual monitoring of the connection status. The connector temperature can be fed back in real time; when the temperature exceeds the standard (above 90°C), a white indicator is displayed, allowing operators to quickly identify abnormalities such as poor contact or overload, promptly troubleshoot potential hazards, and reduce the risk of safety accidents.

[0051] Specifically, the fixing holes for the wiring terminals on the upper and / or lower clamps are U-shaped holes.

[0052] In this embodiment, the fixing hole of the terminal is set as a "U" shaped hole. Compared with a circular hole, the "U" shaped hole has an open structure, which can realize the horizontal insertion and removal of the fastening bolt. The connection or separation of the terminal and the external device can be completed without completely disassembling the bolt.

[0053] In addition, there can be one or more fixing holes. When there are multiple holes, the top one can be a "U" shaped hole, and the inner ones can be round holes.

[0054] This application also provides a wiring method using, for example, an insulated quick-connect connector, comprising the following steps: S1. Insert the end of the wire through the wiring hole of the positioning sleeve and extend it into the wire pressing channel formed by the wire pressing grooves of the upper and lower clamping plates. S2. Tighten the pre-tightening bolt to generate a pre-tightening force on the wire by the upper and lower clamping plates to prevent the wire from coming out. S3. Align the wiring terminals of the upper and lower clamping plates with the wiring terminals of the external device; S4. Pass the fastening bolt 27 through the fixing holes of the terminal block and the external device terminal block, and tighten the fastening bolt to close the upper clamp plate and the lower clamp plate, so as to press and fix the wire through the wire pressing groove, and at the same time realize the electrical connection between the terminal block and the external device terminal block.

[0055] In this embodiment, wire connection is achieved through a step-by-step process. First, the wire is inserted and pre-tightened, then the wire is finally tightened using bolts, simultaneously completing the electrical connection to external equipment. The pre-tightening bolts ensure the wire does not come loose before final securing. Standardizing the wiring process reduces tool switching and operation time; the separate pre-tightening and final tightening improve connection reliability and are suitable for rapid on-site construction.

[0056] Specifically, when using an insulated quick connector with piercing protrusions, it is not necessary to strip the wire ends before inserting the wires into the wiring holes. The crimping grooves can pierce or compress the insulation layer of the wires to achieve electrical connection when closed.

[0057] In this embodiment, when using a connector with piercing protrusions, the wire groove pierces the wire insulation layer during the closing process or causes the metal wire to directly contact the wire groove through compression deformation, eliminating the need for the traditional stripping step. This further simplifies preparation, improves wiring efficiency, avoids poor contact caused by stripping length errors, and ensures electrical connection stability through the piercing structure.

[0058] Please note to all technical personnel: Although the present invention has been described according to the specific embodiments above, the ideas of the present invention are not limited to this invention. Any modifications that utilize the ideas of the present invention will be included within the scope of protection of this patent.

Claims

1. An insulated quick connector, characterized in that... include: A positioning sleeve, one end of which is provided with a wiring hole for wires to be inserted; The clamping plate assembly includes an upper clamping plate and a lower clamping plate that can be opened and closed relative to each other. One end of the upper clamping plate and the lower clamping plate are hinged to one end of the positioning sleeve through a first hinge portion, and the upper clamping plate and the lower clamping plate are hinged together through a second hinge portion. A pre-tightening bolt passes through a hinge hole provided in the second hinge portion and engages with a threaded hinge hole on at least one of the second hinge portions; Both the upper and lower clamping plates include metal terminals and insulating terminal covers; one end of the metal terminal is provided with a wiring terminal for connecting to external equipment, and the wiring terminal is provided with a fixing hole, and the other end of the metal terminal is provided with a wire pressing groove.

2. The insulated quick connector according to claim 1, characterized in that: The wire pressing grooves on the metal terminals of the upper clamping plate and the metal terminals of the lower clamping plate together form a wire pressing channel that matches the shape of the wire when the upper clamping plate and the lower clamping plate are closed. The inner surface of the wire pressing groove is provided with anti-slip texture or puncture protrusions. One of the metal terminals has a sealing groove on the outer ring of its wire groove, and a sealing strip is provided inside the sealing groove. The other metal terminal has a sealing protrusion on the outer ring of its wire groove that matches the sealing groove.

3. The insulated quick connector according to claim 1, characterized in that: The second hinge portion includes a second hinge lug and a third hinge lug respectively disposed at the ends of the upper clamping plate and the lower clamping plate; the preload bolt passes through the hinge holes on the second and third hinge lugs in sequence.

4. The insulated quick connector according to claim 3, characterized in that: The positioning sleeve is divided into an upper sleeve and a lower sleeve. The first hinge part includes a first hinge lug on the upper sleeve and the lower sleeve and a connecting shaft on the insulating terminal cover. The connecting shaft is rotatably engaged with the rotating hole on the first hinge lug.

5. The insulated quick connector according to claim 3, characterized in that: The upper sleeve and the upper clamping plate are provided with elastic connecting hooks on their insulating terminal covers, and the lower sleeve and the lower clamping plate are provided with snap-fit ​​grooves that connect with the elastic connecting hooks on their insulating terminal covers.

6. The insulated quick connector according to claim 1, characterized in that: A flexible sealing sheet is provided on the wiring hole.

7. The insulated quick connector according to claim 1, characterized in that: At least a portion of the positioning sleeve and / or the insulating terminal cover is made of a thermochromic material, and is provided with phase color markings including red, yellow, green and black; when the surface temperature of this part of the structure reaches a preset temperature, its color can turn white.

8. The insulated quick connector according to claim 1, characterized in that: The fixing holes for the wiring terminals on the upper and / or lower clamps are U-shaped holes.

9. A wiring method for an insulated quick connector, characterized in that, Using the insulated quick connector as described in any one of claims 1 to 8, the following steps are included: S1. Insert the end of the wire through the wiring hole of the positioning sleeve and extend it into the wire pressing channel formed by the wire pressing grooves of the upper and lower clamping plates. S2. Tighten the pre-tightening bolt to generate a pre-tightening force on the wire by the upper and lower clamping plates to prevent the wire from coming out. S3. Align the wiring terminals of the upper and lower clamping plates with the wiring terminals of the external device; S4. Pass the fastening bolt through the fixing holes of the terminal block and the external device terminal block, and tighten the fastening bolt to close the upper clamp plate and the lower clamp plate, so as to press and fix the wire through the wire pressing groove, and at the same time realize the electrical connection between the terminal block and the external device terminal block.

10. The wiring method of the insulated quick connector according to claim 9, characterized in that, When using an insulated quick connector with piercing protrusions, it is not necessary to strip the wire ends before inserting the wires into the connection holes. The crimping grooves can pierce or compress the insulation layer of the wires to achieve electrical connection when closed.

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