A compact cylinder connector for new energy vehicles with sealing function

Abstract

This invention discloses a compact cylinder-through connector for new energy vehicles with a sealing function. The cylinder-through component has 18 small pins and 4 large pins inside. The cylinder-through component also has a bushing and a sealing ring assembled on it. A fixing sleeve is installed on the outer ring of the cylinder-through component away from the sealing ring by screws. Both ends of the inner ring of the fixing sleeve are fixed with clamping blocks by screws. A connector is inserted into the cylinder-through component. A pressure plate is fixed at the tail end of the connector. A clamping structure is fixed on the pressure plate, and a sealing gasket is pressed between the pressure plate and the fixing sleeve. The clamping structure abuts against the clamping blocks to press the sealing gasket. The clamping structure is also provided with a locking structure that locks and positions with the clamping blocks. This effectively avoids poor pin contact, wear and breakage, and electrical system failure caused by loose connectors, significantly improving the connection stability and reliability of the connector under complex driving conditions.

Description

Technical Field

[0001] This invention relates to the field of cylinder connectors, and more particularly to a compact cylinder connector for new energy vehicles with a sealing function. Background Technology

[0002] The rapid development of new energy vehicle technology has placed increasingly stringent demands on the performance, integration, and reliability of its core components. As a crucial basic component in the electric drive system, battery system, and electronic control system of new energy vehicles, the cylinder connector is essential for achieving electrical connections and signal transmission between the cylinder and the interior / exterior. Its performance directly determines the stability, safety, and service life of the entire vehicle's electrical system. During vehicle operation, especially under complex road conditions, high-frequency, continuous vibration is a typical operating condition in the engine compartment of new energy vehicles. Traditional cylinder connectors often rely solely on simple snap-fits or interference fits to secure the connector to the cylinder component, lacking effective anti-loosening locking mechanisms. Under long-term vibration, the connector is prone to axial movement and circumferential misalignment, which can lead to poor contact between the connector and the pins, causing signal interruption, increased contact resistance, or even electrical short circuits. In severe cases, it can also cause pin wear and breakage, directly paralyzing the entire electrical system and threatening driving safety. Furthermore, loosening of the connector can damage the mating surfaces of the sealing structure, further increasing the risk of seal failure. Meanwhile, the engine compartment of new energy vehicles typically contains moisture, oil, dust, and corrosive media, and some cylinder-penetrating connectors are exposed to outdoor environments, facing challenges such as alternating high and low temperatures and humid corrosion. Existing cylinder-penetrating connectors mostly use a single sealing ring assembly, relying solely on the interference fit between the sealing ring and the sealing groove to achieve a seal, lacking an effective pre-tightening and locking mechanism. Under vibration conditions, the sealing ring is prone to extrusion deformation, displacement, warping, or even detachment, resulting in gaps on the sealing surface and failing to form an effective sealing barrier. This makes it difficult to achieve protection levels of IP67 or higher, let alone meet the high protection requirements of IP69K. Moisture, oil, and other media can easily penetrate the connector, corroding core components such as pins and cylinder-penetrating parts, causing poor electrical contact, decreased insulation performance, significantly shortening the connector's lifespan, and increasing overall vehicle maintenance costs and failure rates. Summary of the Invention

[0003] The present invention proposes a compact cylinder connector with sealing function for new energy vehicles, which solves the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A compact cylinder-through connector for new energy vehicles with sealing function includes a cylinder-through component. The cylinder-through component has 18 small pins and 4 large pins internally. Both ends of the small and large pins are identical and extend into the upper and lower ends of the cylinder-through component. A bushing is also provided on the cylinder-through component, embedded within it and integrally injection molded using an InsertMolding process. A sealing ring is assembled on the cylinder-through component. A fixing sleeve is installed on the outer ring of the cylinder-through component away from the sealing ring using screws. The fixing sleeve can be installed on one or both ends of the cylinder-through component as needed, depending on the installation of the connector. Clamping blocks are fixed to the left and right ends of the inner ring of the fixing sleeve using screws. A connector is inserted into the cylinder-through component. A pressure plate is fixed to the tail end of the connector. A clamping structure is fixed on the pressure plate, and a sealing gasket is pressed between the pressure plate and the fixing sleeve. The clamping structure abuts against the clamping blocks to press the sealing gasket. The clamping structure also has a locking structure for locking and positioning with the clamping blocks.

[0005] Preferably, the 18 small pins, 4 large pins, and the through-cylinder are integrally injection molded using the Insert Molding process. The joints between the through-cylinder and the large and small pins are sealed with glue. The small and large pins are treated with different plating, and different combinations of pins and plating are used. The combination of small and large pins is also different, and the plating of different pins is also different. This fully utilizes the internal space and meets the requirements of different wire diameters, adapting to the signal transmission requirements of different wire diameters.

[0006] Preferably, a drive roller is fixed inside the fixed outer sleeve, and the pressing structure includes a rotating shaft rotatably mounted above the pressure plate via a bearing. A reset component is also provided above the pressure plate, and the reset component is movably connected to the rotating shaft. A drive component is fixed above the rotating shaft, and a drive groove is provided on the drive component. The drive roller slides into the drive groove. A lifting component is fixed on the rotating shaft, and a locking structure is installed inside the lifting component.

[0007] Preferably, the drive groove includes a vertically downward insertion groove, the bottom end of which is provided with a spiral deflection groove, the spiral number of the deflection groove being one-quarter, and the tail end of which is provided with a vertically upward release groove. In the initial state, that is, when the connector is ready to be inserted into the cylinder part from below, the insertion vertical groove is directly below the drive roller; After the connector is inserted into the cylinder part to a certain extent, the drive roller will slide into the insertion vertical groove. At this time, the position of the rotating shaft and the drive component remains unchanged. After the drive roller moves into the deflection groove, the drive roller slides in the deflection groove and drives the rotating shaft and the drive component to rotate counterclockwise. When the drive roller moves to the bottom of the deflection groove, the rotating shaft and drive components rotate 90 degrees counterclockwise, and the disengagement groove is directly above the drive roller.

[0008] Preferably, the reset component includes a fixed shell fixed above the pressure plate. The cavity inside the fixed shell is designed to form a mounting groove. A limit block is fixed at the lower end of the rotating shaft. The limit block rotates and extends into the mounting groove. A tension spring is placed in the mounting groove. The two ends of the tension spring are connected to the limit block and the inner wall of the fixed shell, respectively. The tension spring causes the rotating shaft to always have a clockwise rotation tendency. That is, when the drive roller and the clamping block are disengaged from the clamping structure, the tension spring will keep the rotating shaft and the drive component in the initial state when the clamping structure is not subjected to external force, that is, the insertion vertical groove is directly below the drive roller.

[0009] Preferably, the upper inclined surface of the clamping block is designed to form a clamping inclined surface, the lifting member includes a lifting block, the lower inclined surface of the lifting block is designed to form a lifting inclined surface, and the slope of the lifting inclined surface is the same as the slope of the clamping inclined surface; The upper structure of the lifting block is designed in an arc shape, while the other two sides of the lifting block are designed in a flat shape. The center of the lifting block is collinear with the axis of the rotating shaft. In the initial state, that is, before the connector is fully inserted into the cylinder part, the insertion vertical groove is directly below the drive roller, and the two side planes of the lifting block are parallel to the side of the clamping block. At the same time, the space between the side of the clamping block and the side of the connector is greater than the width of the lifting block. When the connector is inserted, the clamping structure can be smoothly inserted into the fixed sleeve without interference.

[0010] Preferably, the internal cavity of the lifting block is designed to form an installation cavity, the installation cavity has an inverted convex shape, and the bottom end of the installation cavity is connected to the outside of the lifting block; Preferably, the locking structure includes a locking block placed in the mounting cavity. The locking block has an inverted convex shape. The lower end of the locking block passes through the mounting cavity and is located below the lifting block. A downward pressure spring is fixed above the locking block. The upper end of the downward pressure spring abuts against the top of the inner wall of the mounting cavity. The downward pressure spring causes the locking block to always have a downward tendency.

[0011] Preferably, the clamping block has multiple evenly distributed locking grooves, and the locking grooves are designed to form a movable inclined plane along one side of the inclined plane, while the other side of the locking groove is a vertical plane. The lower end of the locking block is designed to form a sliding slope, the slope of which is the same as that of the moving slope. When the lifting block moves upward along the pressing slope, the sliding slope at the lower end of the locking block can slide and retract along the moving slope, allowing the lifting block to move upward smoothly. Due to the vertical design, the locking block cannot move downward, meaning the lifting block can only move upward and not downward. This prevents the connector from detaching from the cylinder through part in the high-frequency vibration environment of new energy vehicles after the connector is connected, thus improving the connection's firmness.

[0012] A method for manufacturing a compact cylinder connector with sealing function for new energy vehicles includes the following steps: S1, PIN pin stamping and differentiated electroplating The metal substrate is precision stamped to obtain 18 small pins and 4 large pins. The small pins and large pins are electroplated with different plating layers to adapt to different wire diameters and signal transmission requirements. After electroplating, they are dried for later use.

[0013] S2, PIN pin and bushing positioning clamping The electroplated small and large pins are placed into the InsertMolding fixture according to the preset arrangement. The bushings are then simultaneously installed into the same InsertMolding fixture to complete the positioning and fixing of the pins and bushings.

[0014] S3, One-time Insert Molding The clamped InsertMolding fixture is placed into the injection mold for injection molding, so that the cylinder insert, small pin, and large pin are integrated and molded together to obtain the cylinder insert semi-finished product.

[0015] S4, Secondary Insert Molding Keeping the fixture and mold in the same state, continue injection molding so that the bushing and cylinder insert are integrated and molded through secondary injection molding to obtain the overall structure of the cylinder insert.

[0016] S5, potting and sealing treatment The joint between the cylinder insert and the small and large pins is sealed with glue, so that the gap between the pin and the cylinder insert 1 is completely filled with glue, forming an internal sealing structure.

[0017] S6, Sealing ring assembly A sealing ring is installed at the preset sealing position of the cylinder-penetrating component, so that the sealing ring fits tightly with the cylinder-penetrating component to form an external sealing structure.

[0018] S7. Installation of the fixing jacket and clamping block The retaining sleeve is fixed to the end of the cylinder insert with screws; the clamping blocks are fixedly installed on both sides of the inner ring of the retaining sleeve to complete the assembly of the external support structure.

[0019] S8. Assembly of clamping and locking structures The rotating shaft is rotatably mounted on the pressure plate. The driving component and the lifting component are installed on the rotating shaft. The reset component is assembled between the pressure plate and the rotating shaft, so that the rotating shaft has the ability to rotate and reset. The locking structure is installed inside the lifting component 9, so that the locking block is kept in the extended state under the action of the lower pressure spring.

[0020] S9, Drive Roller Assembly and Linkage Matching The drive roller is fixed to the inside of the fixed outer sleeve, so that the drive roller and the insertion vertical groove and deflection groove on the drive component form a sliding fit relationship, ensuring smooth insertion, rotation and lifting actions.

[0021] The beneficial effects of this invention are: 1. This invention achieves an integrated anti-loosening mechanism by setting up a linkage between the clamping structure and the locking structure, realizing the insertion, automatic lifting, and one-way locking of the connector and the cylinder insert. When the connector is fully inserted, the drive roller slides along the deflection groove, driving the drive component to rotate, causing the lifting component to rise along the clamping slope, axially clamping the sealing gasket. At the same time, the locking block is locked into the locking groove of the clamping block under the action of the lower pressure spring. Since the locking groove is a vertical surface on one side, the locking block cannot be pulled out in the opposite direction, thus forming a one-way axial self-locking. From a mechanical structure perspective, this completely eliminates the axial movement and circumferential displacement of the connector under high-frequency vibration conditions in the vehicle. This design effectively avoids poor PIN contact, wear and breakage, and electrical system failures caused by connector loosening, significantly improving the connection stability and reliability of the connector under complex driving conditions, and ensuring the safe and stable operation of the vehicle's electrical system.

[0022] 2. This invention employs a differentiated combination structure of 18 small pins and 4 large pins, combined with an integrated Insert Molding process, ensuring a tight fit between components and maximizing the use of the internal space of the cylinder connector, thus achieving a compact connector design. Simultaneously, the small and large pins utilize different plating treatments to adapt to the transmission requirements of small-diameter, low-current and large-diameter, high-current wires, respectively. This fully leverages the performance of different pins while avoiding waste of plating resources, significantly improving the connector's adaptability and economic efficiency. Furthermore, the core linkage structure of this invention—including the clamping structure, locking structure, and drive roller—adopts a retrofit design, requiring no modification to the original injection mold and basic molding process. It can be directly assembled onto existing connector bodies, balancing structural compactness and production convenience. This design allows for wide compatibility with different models and specifications of new energy vehicle cylinder connectors and related electrical systems, demonstrating broad application prospects. Attached Figure Description

[0023] Figure 1 This is a front view of a compact cylinder connector with sealing function for new energy vehicles proposed in this invention. Figure 2 This is a top view of a compact cylinder connector with sealing function for new energy vehicles proposed in this invention; Figure 3 for Figure 1 Exploded view; Figure 4 for Figure 3 Axonometric projections of the front and rear angles; Figure 5 for Figure 4 A schematic diagram of the intermediate pressure plate and the clamping structure; Figure 6 for Figure 5 Exploded view of the centrally compressed structure; Figure 7 for Figure 6 Schematic diagram of the connection between the intermediate clamping structure and the clamping block; Figure 8 for Figure 7 Cross-sectional view of the middle pressure block and locking structure.

[0024] Numbering on the map: 1. Through-cylinder component; 11. Large pin; 12. Small pin; 2. Sealing ring; 3. Bushing; 4. Fixed outer jacket; 41. Drive roller; 42. Pressing block; 421. Pressing inclined plane; 422. Locking groove; 423. Moving inclined plane; 5. Connector; 6. Pressure plate; 7. Sealing gasket; 8. Clamping structure; 81. Rotating shaft; 811. Limiting block; 82. Driving component; 821. Insertion vertical slot; 822. Deflection slot; 823. Release slot; 83. Reset component; 831. Fixing shell; 832. Tension spring; 84. Lifting component; 841. Lifting block; 842. Lifting ramp; 843. Mounting cavity; 9. Locking structure; 91. Locking block; 92. Lower pressure spring; 93. Sliding inclined plane. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Reference Figure 1 - Figure 8A compact cylinder-through connector for new energy vehicles with sealing function includes a cylinder-through component 1. The cylinder-through component 1 has 18 small pins 12 and 4 large pins 11 inside. The two ends of the small pins 12 and large pins 11 are identical and extend into the upper and lower ends of the cylinder-through component 1. A bushing 3 is also provided on the cylinder-through component 1. The bushing 3 is embedded in the cylinder-through component 1 and integrally injection molded using an insert molding process. A sealing ring 2 is assembled on the cylinder-through component 1. A screw is installed on the outer ring of the cylinder-through component 1 at the end away from the sealing ring 2. The fixed outer sleeve 4 can be installed on one or both ends of the cylinder insert 1 as needed, depending on the installation of the connector 5. The left and right ends of the inner ring of the fixed outer sleeve 4 are fixed with clamping blocks 42 by screws. The connector 5 is inserted into the cylinder insert 1. The tail end of the connector 5 is fixed with a pressure plate 6. The pressure plate 6 is fixed with a clamping structure 8, and a sealing gasket 7 is pressed between the pressure plate 6 and the fixed outer sleeve 4. The clamping structure 8 abuts against the clamping block 42 to press the sealing gasket 7. The clamping structure 8 is also provided with a locking structure 9 that locks and positions with the clamping block 42.

[0027] Reference Figure 1 - Figure 3 The 18 small pins 12, 4 large pins 11, and cylinder insert 1 are integrally injection molded using the Insert Molding process. The joint between the cylinder insert 1 and the large pins 11 and small pins 12 is sealed with glue. The small pins 12 and large pins 11 are treated with different plating. Different combinations of pins and plating are used. The combination of 18 small pins 12 and 4 large pins 11, and the different plating of the pins, make full use of the internal space and meet the requirements of different wire diameters, and adapt to the signal transmission requirements of different wire diameters.

[0028] Reference Figure 4 The fixed outer sleeve 4 has a drive roller 41 fixed inside. The pressing structure 8 includes a rotating shaft 81 that is rotatably mounted above the pressure plate 6 via a bearing. A reset member 83 is also provided above the pressure plate 6. The reset member 83 is movably connected to the rotating shaft 81. A drive member 82 is fixed above the rotating shaft 81. A drive groove is provided on the drive member 82. The drive roller 41 slides into the drive groove. A lifting member 84 is fixed on the rotating shaft 81. A locking structure 9 is installed inside the lifting member 84.

[0029] Reference Figure 5 , Figure 7 The drive groove includes a vertically downward insertion groove 821, and a spiral deflection groove 822 is provided at the bottom end of the insertion groove 821. The number of spiral turns of the deflection groove 822 is one-quarter, and a vertically upward release groove 823 is provided at the tail end of the deflection groove 822. In the initial state, that is, when the connector 5 is ready to be inserted into the cylinder 1 from below, the insertion vertical groove 821 is directly below the drive roller 41; After the connector 5 is inserted into the cylinder 1 to a certain extent, the drive roller 41 will slide into the insertion vertical groove 821. At this time, the positions of the rotating shaft 81 and the drive component 82 remain unchanged. After the drive roller 41 moves into the deflection groove 822, the drive roller 41 slides in the deflection groove 822 and drives the rotating shaft 81 and the drive component 82 to rotate counterclockwise. When the drive roller 41 moves to the bottom of the deflection groove 822, the rotating shaft 81 and the drive component 82 rotate 90 degrees counterclockwise, and the disengagement groove 823 is directly above the drive roller 41. Remove the screws on the side of the fixed sleeve 4 to remove the fixed sleeve 4 and connector 5 from the cylinder part 1. Then remove the screws on the clamping block 42 to disconnect the clamping block 42 from the fixed sleeve 4. Then move the fixed sleeve 4 upward to remove it from the clamping structure 8. Then remove the clamping block 42 from below the clamping structure 8 to completely remove the connector 5. When reconnecting, first fix the clamping block 42 inside the fixing sleeve 4 with screws, then fix the fixing sleeve 4 to the cylinder insert 1 with screws, and finally insert the connector 5 back into the cylinder insert 1.

[0030] Reference Figure 6 The reset component 83 includes a fixed shell 831 fixed above the pressure plate 6. The cavity inside the fixed shell 831 is designed to form an installation groove. A limit block 811 is fixed at the lower end of the rotating shaft 81. The limit block 811 rotates and extends into the installation groove. A tension spring 832 is placed in the installation groove. The two ends of the tension spring 832 are connected to the limit block 811 and the inner wall of the fixed shell 831, respectively. The tension spring 832 makes the rotating shaft 81 always have a clockwise rotation tendency. That is, when the drive roller 41 and the clamping block 42 are disengaged from the clamping structure 8, the clamping structure 8 is not subjected to external force. The tension spring 832 will make the rotating shaft 81 and the drive component 82 be in the initial state, that is, the insertion vertical groove 821 is directly below the drive roller 41.

[0031] Reference Figure 7 , Figure 8 The upper inclined surface of the clamping block 42 is designed to form a clamping inclined surface 421. The lifting component 84 includes a lifting block 841. The lower inclined surface of the lifting block 841 is designed to form a lifting inclined surface 842. The slope of the lifting inclined surface 842 is the same as the slope of the clamping inclined surface 421. The upper structure of the lifting block 841 is designed in an arc shape, and the other two sides of the lifting block 841 are designed in a flat shape. The center of the lifting block 841 is collinear with the axis of the rotating shaft 81. In the initial state, that is, when the connector 5 is not fully inserted into the cylinder 1, the insertion vertical groove 821 is directly below the drive roller 41, and the two side planes of the lifting block 841 are parallel to the side of the pressing block 42. At the same time, the space between the side of the pressing block 42 and the side of the connector 5 is greater than the width of the lifting block 841. When the connector 5 is inserted, the pressing structure 8 can be smoothly inserted into the fixed outer sleeve 4 without interference. After the connector 5 is inserted into the cylinder 1 to a certain extent, the drive roller 41 moves into the deflection groove 822 through the insertion vertical groove 821. The drive roller 41 slides in the deflection groove 822 and drives the rotating shaft 81 and the drive component 82 to rotate counterclockwise, thereby causing the lifting block 841 to rotate together. At this time, the lifting slope 842 on the lower surface of the lifting block 841 will contact the pressing slope 421 on the pressing block 42, and cause the lifting block 841 to move upward along the pressing slope 421, thereby causing the entire connector 5 and pressing structure 8 to move upward, forming a cooperation with the manual insertion of the connector 5 inward. The pressing slope 421 and the lifting slope 842 press against the sealing gasket 7, applying axial pressing force to the sealing gasket 7, improving the reliability and sealing performance of the connection.

[0032] Reference Figure 6 - Figure 8 The lifting block 841 has an internal cavity design that forms an installation cavity 843. The installation cavity 843 has an inverted convex shape, and the bottom end of the installation cavity 843 is connected to the outside of the lifting block 841. The locking structure 9 includes a locking block 91 placed in the mounting cavity 843. The locking block 91 has an inverted convex shape. The lower end of the locking block 91 passes through the mounting cavity 843 and is located below the lifting block 841. A downward pressure spring 92 is fixed above the locking block 91. The upper end of the downward pressure spring 92 abuts against the top of the inner wall of the mounting cavity 843. The downward pressure spring 92 makes the locking block 91 always have a downward tendency.

[0033] Reference Figure 8 The clamping block 42 has multiple evenly distributed locking grooves 422. The locking grooves 422 are designed to form a moving inclined surface 423 along one side of the inclined surface that rises from the inclined surface. The other side of the locking grooves 422 is a vertical surface. The lower end of the locking block 91 is designed to form a sliding slope 93. The slope of the sliding slope 93 is the same as that of the moving slope 423. When the lifting block 841 moves upward along the pressing slope 421, the sliding slope 93 at the lower end of the locking block 91 can slide and retract along the moving slope 423, so that the lifting block 841 can move upward smoothly. Due to the vertical design, the locking block 91 cannot move downward. That is, the lifting block 841 can only move upward and cannot move downward. This prevents the connector 5 from falling off from the cylinder pier 1 after the connector 5 is connected to the cylinder pier 1 in the high-frequency vibration environment of new energy vehicles, thus improving the firmness of the connection.

[0034] A method for manufacturing a compact cylinder-through connector for new energy vehicles with sealing function, characterized by comprising the following steps: S1, PIN pin stamping and differentiated electroplating The metal substrate is precision stamped to obtain 18 small PIN pins 12 and 4 large PIN pins 11; the small PIN pins 12 and the large PIN pins 11 are electroplated with different plating layers to adapt to different wire diameters and signal transmission requirements; after electroplating, they are dried for later use.

[0035] S2, PIN pin and bushing positioning clamping The electroplated small PIN pins 12 and large PIN pins 11 are placed into the InsertMolding fixture according to the preset arrangement; the bushings 3 are simultaneously installed into the same InsertMolding fixture to complete the positioning and fixing of the PIN pins and bushings 3.

[0036] S3, One-time Insert Molding The clamped InsertMolding fixture is placed into the injection mold for injection molding, so that the cylinder insert 1, small PIN 12, and large PIN 11 are integrated through injection molding to obtain the semi-finished cylinder insert 1.

[0037] S4, Secondary Insert Molding Keeping the fixture and mold in the same state, continue injection molding so that the bushing 3 and the cylinder insert 1 can be integrated and molded through secondary injection molding to obtain the overall structure of the cylinder insert 1.

[0038] S5, potting and sealing treatment The joint between the cylinder-penetrating component 1 and the small PIN pin 12 and the large PIN pin 11 is sealed with glue so that the gap between the PIN pin and the cylinder-penetrating component 1 is completely filled with glue, forming an internal sealing structure.

[0039] S6, Sealing ring assembly A sealing ring 2 is installed at a preset sealing position of the cylinder-penetrating component 1, so that the sealing ring 2 fits tightly with the cylinder-penetrating component 1 to form an external sealing structure.

[0040] S7. Installation of the fixing jacket and clamping block The fixing sleeve 4 is fixed to the end of the cylinder insert 1 with screws; the clamping block 10 is fixedly installed on both sides of the inner ring of the fixing sleeve 4 to complete the assembly of the external support structure.

[0041] S8. Assembly of clamping and locking structures Rotary shaft 11 is rotatably mounted on pressure plate 16, and drive component 6 and lifting component 9 are mounted on rotary shaft 11; reset component 83 is assembled between pressure plate 16 and rotary shaft 11 so that rotary shaft 11 has the ability to rotate and reset; locking structure 9 is installed inside lifting component 9 so that locking block 13 is kept in the extended state under the action of lower pressure spring 15.

[0042] S9, Drive Roller Assembly and Linkage Matching The drive roller 5 is fixed inside the fixed outer sleeve 4, so that the drive roller 5 and the insertion vertical groove 17 and deflection groove 18 on the drive component 6 form a sliding fit relationship, ensuring smooth insertion, rotation and lifting actions.

[0043] Working principle: In the initial state, the connector 5 is not fully inserted into the cylinder 1, the drive 6 in the clamping structure 8 maintains the initial angle, the insertion vertical groove 17 is directly opposite the drive roller 5 inside the fixed outer sleeve 4, the two side planes of the lifting member 9 are parallel to the side of the clamping block 10, there is no squeezing contact between the lifting member 9 and the clamping block 10, the locking block 13 of the locking structure 9 extends out of the bottom of the lifting member 9 under the action of the lower pressure spring 15, the sealing gasket 7 is in a natural un-pressed state, the tension spring 12 keeps the rotating shaft 11 in a clockwise rotation trend, providing a reset driving force for subsequent actions.

[0044] When the operator inserts the connector 5 axially into the cylinder piercing part 1, the connector 5 drives the pressure plate 16, the sealing gasket 7 and the clamping structure 8 to move synchronously into the fixed outer sleeve 4. The drive roller 5 on the inner side of the fixed outer sleeve 4 first slides vertically into the insertion groove 17 of the drive part 6. At this time, the drive roller 5 only makes linear relative motion and will not drive the rotating shaft 11 to rotate with the drive part 6. The lifting part 9 can smoothly enter the gap between the clamping blocks 10 to ensure that there is no interference in the insertion process. As the connector 5 is continuously inserted into place, the drive roller 5 moves to the bottom of the insertion vertical groove 17 and enters the deflection groove 18. When the drive roller 5 slides along the deflection groove 18, it applies a circumferential torque to the drive component 6, which overcomes the torque of the tension spring 12 and drives the rotating shaft 11, the drive component 6, and the lifting component 9 to rotate counterclockwise in sync. During the rotation, the lifting inclined surface 19 at the bottom of the lifting component 9 and the pressing inclined surface 20 at the top of the pressing block 10 press against each other. Due to the guiding effect of the inclined surface, the lifting component 9 drives the rotating shaft 11, the pressure plate 16, and the connector 5 to be lifted upward along the axial direction as a whole. This applies a continuous and uniform axial pressing force to the sealing gasket 7 between the pressure plate 16 and the fixed outer sleeve 4, causing the sealing gasket 7 to undergo elastic deformation and completely fill the gap between the connector 5 and the cylinder part 1, greatly improving the waterproof, dustproof, and oil-proof sealing performance of the docking position. As the lifting member 9 moves upward along the pressing inclined surface 20, the sliding inclined surface 21 at the lower end of the locking block 13 contacts and presses against the moving inclined surface 22 on the pressing block 10. The locking block 13 overcomes the elastic force of the lower pressure spring 15 and retracts upward into the mounting cavity 843 of the lifting member 9, ensuring that the lifting member 9 can move upward smoothly. When the lifting member 9 moves to the preset sealing and pressing position, the locking block 13 aligns with the locking groove 23 on the pressing block 10. The lower pressure spring 15 pushes the locking block 13 to pop out downward and lock into the locking groove 23. Since the locking groove 23 is a vertical surface on one side, the locking block 13 cannot be pulled out downward in the opposite direction, so that the lifting member 9 and the pressing block 10 form a one-way axial lock. Only the lifting member 9 is allowed to press upward, and it is prohibited to loosen and retract downward. From the mechanical structure, the problem of the connector 5 loosening and the sealing gasket 7 failing due to vehicle vibration is eliminated.

[0045] When it is necessary to disassemble the connector 5, there is no need to damage the main structure of the connector. Simply remove the fixing screws between the fixing sleeve 4 and the cylinder 1, and then remove the connecting screws between the clamping block 10 and the fixing sleeve 4. This will release the limiting constraint of the clamping block 10 on the lifting member 9. Under the reset action of the tension spring 12, the rotating shaft 11, the driving member 6 and the lifting member 9 will automatically rotate back to the initial angle. The locking block 13 will disengage from the locking groove 23, and the connector 5 can be smoothly pulled out from the cylinder 1. The sealing gasket 7 will return to its natural state, completing the overall disassembly process.

[0046] The through-cylinder 1 is the main carrier of the entire connector, which integrates 18 small pins 12 and 4 large pins 11. The pins use differentiated plating to adapt to the signal transmission requirements of different wire diameters. All pins and through-cylinder 1 are integrally injection molded by the InsertMolding process, and the joint is sealed with potting compound to ensure basic electrical conductivity and sealing performance. The bushing 3 is also embedded into the through-cylinder 1 by secondary injection molding using the InsertMolding process to form a stable main support structure.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A compact cylinder connector for new energy vehicles with sealing function, characterized in that, The device includes a cylinder insert (1), which has 18 small pins (12) and 4 large pins (11) inside. The two ends of the small pins (12) and the large pins (11) are the same and extend into the upper and lower ends of the cylinder insert (1). The cylinder insert (1) is also provided with a bushing (3). A sealing ring (2) is assembled on the cylinder insert (1). A fixing sleeve (4) is installed on the outer ring of the cylinder insert (1) away from the sealing ring (2) by screws. The inner ring has a clamping block (42) fixed to both the left and right ends by screws. A connector (5) is inserted into the cylinder part (1). A pressure plate (6) is fixed to the tail end of the connector (5). A clamping structure (8) is fixed on the pressure plate (6). A sealing gasket (7) is pressed between the pressure plate (6) and the fixed outer sleeve (4). The clamping structure (8) abuts against the clamping block (42) to press the sealing gasket (7). A locking structure (9) is also provided on the clamping structure (8) to lock and position the clamping block (42).

2. The compact cylinder connector with sealing function for new energy vehicles according to claim 1, characterized in that, The 18 small pins (12) are integrated with the 4 large pins (11) and the cylinder insert (1) by the Insert Molding process, and the cylinder insert (1) is sealed with glue at the joint with the large pins (11) and the small pins (12).

3. The compact cylinder connector with sealing function for new energy vehicles according to claim 1, characterized in that, The fixed outer sleeve (4) has a drive roller (41) fixed inside. The pressing structure (8) includes a rotating shaft (81) that is rotatably mounted above the pressure plate (6) via a bearing. A reset member (83) is also provided above the pressure plate (6). The reset member (83) is movably connected to the rotating shaft (81). A drive member (82) is fixed above the rotating shaft (81). A drive groove is provided on the drive member (82). The drive roller (41) slides into the drive groove. A lifting member (84) is fixed on the rotating shaft (81). A locking structure (9) is installed inside the lifting member (84).

4. A compact cylinder connector for new energy vehicles with sealing function according to claim 3, characterized in that, The drive groove includes a vertically downward insertion groove (821), the bottom end of which is provided with a spiral deflection groove (822), and the tail end of which is provided with a vertically upward release groove (823).

5. A compact cylinder connector for new energy vehicles with sealing function according to claim 3, characterized in that, The reset component (83) includes a fixed shell (831) fixed above the pressure plate (6). The cavity inside the fixed shell (831) is designed to form an installation groove. A limit block (811) is fixed at the lower end of the rotating shaft (81). The limit block (811) rotates into the installation groove. A tension spring (832) is placed in the installation groove. The two ends of the tension spring (832) are respectively connected to the limit block (811) and the inner wall of the fixed shell (831).

6. A compact cylinder connector for new energy vehicles with sealing function according to claim 3, characterized in that, The upper inclined surface of the clamping block (42) is designed to form a clamping inclined surface (421). The lifting member (84) includes a lifting block (841). The lower inclined surface of the lifting block (841) is designed to form a lifting inclined surface (842). The slope of the lifting inclined surface (842) is the same as the slope of the clamping inclined surface (421).

7. A compact cylinder connector for new energy vehicles with sealing function according to claim 6, characterized in that, The lifting block (841) has an internal cavity designed to form an installation cavity (843). The installation cavity (843) has an inverted convex shape, and the bottom end of the installation cavity (843) is connected to the outside of the lifting block (841). The locking structure (9) includes a locking block (91) placed in the mounting cavity (843). The locking block (91) has an inverted convex shape. The lower end of the locking block (91) passes through the mounting cavity (843) and is located below the lifting block (841). A downward pressure spring (92) is fixed above the locking block (91). The upper end of the downward pressure spring (92) abuts against the top of the inner wall of the mounting cavity (843).

8. A compact cylinder connector for new energy vehicles with sealing function according to claim 7, characterized in that, The clamping block (42) has a plurality of evenly distributed locking grooves (422). The locking grooves (422) are designed to form a moving inclined surface (423) along one side of the inclined surface that rises from the inclined surface. The other side of the locking grooves (422) is a vertical surface. The lower end of the locking block (91) is designed to form a sliding slope (93), and the slope of the sliding slope (93) is the same as the slope of the moving slope (423).

9. A method for manufacturing a compact cylinder-through connector for new energy vehicles with sealing function as described in any one of claims 1-8, characterized in that, Includes the following steps: S1, PIN pin stamping and differentiated electroplating The metal substrate is precision stamped to obtain 18 small PIN pins 12 and 4 large PIN pins 11; the small PIN pins 12 and the large PIN pins 11 are electroplated with different plating layers to adapt to different wire diameters and signal transmission requirements, and then dried after electroplating. S2, PIN pin and bushing positioning clamping The electroplated small PIN pins 12 and large PIN pins 11 are placed into the InsertMolding fixture according to the preset arrangement. The bushings 3 are then simultaneously installed into the same InsertMolding fixture to complete the positioning and fixing of the PIN pins and bushings 3. S3, One-time Insert Molding The clamped InsertMolding fixture is placed into the injection mold for injection molding, so that the cylinder insert 1, small PIN 12, and large PIN 11 are integrated through injection molding to obtain the semi-finished cylinder insert 1. S4, Secondary Insert Molding Keeping the fixture and mold in the same state, continue injection molding so that the bushing 3 and the cylinder insert 1 can be integrated and molded through secondary injection molding to obtain the overall structure of the cylinder insert 1. S5, potting and sealing treatment The joint between the cylinder-penetrating component 1 and the small PIN pin 12 and the large PIN pin 11 is sealed with glue so that the gap between the PIN pin and the cylinder-penetrating component 1 is completely filled with glue, forming an internal sealing structure. S6, Sealing ring assembly A sealing ring 2 is installed at a preset sealing position of the cylinder-penetrating component 1, so that the sealing ring 2 fits tightly with the cylinder-penetrating component 1 to form an external sealing structure. S7. Installation of the fixing jacket and clamping block The fixing sleeve 4 is fixed to the end of the cylinder insert 1 with screws, and the clamping block 10 is fixedly installed on both sides of the inner ring of the fixing sleeve 4 to complete the assembly of the external support structure. S8. Assembly of clamping and locking structures. Rotary shaft 11 is rotatably mounted on pressure plate 16. Drive component 6 and lifting component 9 are mounted on rotary shaft 11. Reset component 83 is assembled between pressure plate 16 and rotary shaft 11, so that rotary shaft 11 has the ability to rotate and reset. Locking structure 9 is installed inside lifting component 9, so that locking block 13 is kept in the extended state under the action of lower pressure spring 15. S9, Drive Roller Assembly and Linkage Matching The drive roller 5 is fixed inside the fixed outer sleeve 4, so that the drive roller 5 and the insertion vertical groove 17 and deflection groove 18 on the drive component 6 form a sliding fit relationship, ensuring smooth insertion, rotation and lifting actions.

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