A charging cable for new energy vehicles

Abstract

The application relates to the technical field of charging cables, and particularly discloses a charging cable for a new energy vehicle, which comprises a socket, positioning sliding blocks, a threaded seat, an outer cylinder and a threaded cylinder, the number of the positioning sliding blocks is four, the four positioning sliding blocks are arranged on the upper and lower sides and the left and right ends of the socket respectively, the threaded seat is arranged on the rear side of the socket, the threaded cylinder is screwed on the outer wall of the threaded seat, and the outer wall of the outer cylinder is rotatably arranged on the inner wall of the threaded cylinder through a bearing. The device creates a pre-connection state, completes mechanical positioning and state self-checking under the condition of no high-pressure risk, fundamentally improves operation safety, effectively protects the terminal from damage, and ensures stable and reliable connection against vibration loosening through the synergistic effect of multiple locking mechanisms, so that the core problems of high operation risk, insufficient connection reliability and inconvenient maintenance in the prior art are solved, and the device has significant technical progress and practical value.

Description

Technical Field

[0001] This invention relates to the field of charging cable technology, specifically a charging cable for new energy vehicles. Background Technology

[0002] Against the backdrop of the rapid development of the new energy vehicle industry, high-voltage wiring harness connectors, as key components connecting high-voltage components such as power batteries, drive motors, and on-board chargers, have their performance directly related to the high-voltage safety and operational reliability of the entire vehicle. As electric vehicle platforms evolve towards 800V high-voltage architecture, the working voltage of connectors has increased to over 1000V, and the working current can reach up to 300A. This places more stringent requirements on the electrical performance, mechanical strength, and environmental adaptability of connectors. Current charging cables for new energy vehicles typically use a direct plug-and-socket connection. Operators manually push the plug into the socket, securing it with plastic clips or metal locking mechanisms. This connection method has revealed several shortcomings in long-term use. First, during insertion, operators must overcome multiple resistances related to pin alignment, sealing ring compression, and locking mechanism engagement. This makes it highly susceptible to pin bending, socket deformation, or contact scratches due to incorrect operating angles. These hidden damages significantly increase contact resistance, potentially leading to localized overheating or even fire under high voltage and high current conditions. Second, traditional connectors lack effective intermediate state monitoring, which hinders operation. Personnel cannot confirm alignment and sealing before insertion. If misinsertion or incomplete insertion occurs, the system can only detect the fault through detection after power is applied, by which time irreversible damage has already occurred. Furthermore, existing locking mechanisms mainly rely on the elastic deformation of plastic clips to provide holding force. Under long-term vehicle vibration and temperature fluctuations, there is a risk of fatigue and loosening. If the connector accidentally disconnects, it will instantly generate high-voltage arcing, seriously threatening the safety of personnel and equipment. In addition, during the insertion and removal process of traditional connectors, the high-voltage terminals are always exposed, posing a risk of operators accidentally touching live parts. Moreover, it is impossible to visually inspect the shielding overlap before insertion, affecting the electromagnetic compatibility performance of the entire vehicle. Summary of the Invention

[0003] The purpose of this invention is to provide a charging cable for new energy vehicles, which at least solves the problems in the prior art, such as the lack of a safe intermediate state during operation, the high dependence on the accuracy of mating, which easily leads to terminal damage, the insufficient vibration resistance reliability of the locking mechanism, and the safety hazards caused by the exposure of the high-voltage end during maintenance.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a charging cable for new energy vehicles, comprising: a socket, positioning sliders, a threaded seat, an outer cylinder, a drive mechanism, a fixing mechanism, a first slide groove, a second slide groove, a third slide groove, a threaded cylinder, a plug, a push rod, a first guide rod, positioning slide grooves, and teeth. The number of positioning sliders is four, and the four positioning sliders are respectively disposed on the upper and lower sides and the left and right ends of the socket. The threaded seat is disposed on the rear side of the socket. The threaded cylinder is screwed to the outer wall of the threaded seat. The front side of the outer cylinder's outer wall is rotatably disposed on the rear side of the inner wall of the threaded cylinder via a bearing. The left and right sides of the outer cylinder each have a first slide groove communicating with its inner cavity along the front-back direction. The upper and lower sides and the left and right ends of the outer cylinder each have a second slide groove communicating with its inner cavity along the front-back direction. The upper and lower front ends of the inner cavity of the outer cylinder each have a first slide groove communicating with its inner cavity. The three sliding grooves are arranged as follows: the driving mechanism is located in the inner cavity of the outer cylinder; the fixing mechanism is located in the inner cavity of the outer cylinder; the plug is slidably and adaptably inserted into the inner cavity of the outer cylinder; the plug is slidably and adaptably inserted into the outer wall of the socket; positioning sliding grooves are provided on the upper, lower, left, and right ends of the plug along the front-back direction; the positioning slider is slidably and adaptably inserted into the inner cavity of the positioning sliding groove; the front and rear ends of the first guide rod are respectively located on the front and rear sides of the inner cavity of the second sliding groove; there are four push rods, which are respectively located on the upper, lower, left, and right ends of the plug; the outer walls of the four push rods are slidably and adaptably inserted into the inner cavities of the four second sliding grooves; the push rods are slidably and adaptably inserted into the outer wall of the first guide rod; and there are several teeth, which are equidistantly arranged on the left and right sides of the plug along the front-back direction.

[0005] Preferably, the driving mechanism includes: a rotating rod, a gear, a rack, a pressing groove, a second guide rod, a second spring, and a positioning assembly. There are two rotating rods, with their upper and lower ends rotatably mounted on the upper and lower sides of the inner cavity of the outer cylinder via bearings. The gear is sleeved on the outer wall of the rotating rod and locked by a set screw. The two gears mesh with the teeth on the left and right sides of the plug. The front and rear ends of the second guide rod are respectively located on the front and rear sides of the inner cavity of the first slide groove. The second spring is sleeved on the rear side of the outer wall of the second guide rod, and its rear end is engaged with the rear side of the inner cavity of the first slide groove. There are two racks, each slidably fitted into the rear side of the inner cavity of the two first slide grooves. The racks are slidably fitted into the outer wall of the second guide rod. The front end of the second spring is engaged with the rear side of the rack. The two racks mesh with two gears. Pressing grooves are provided on the upper and lower rear ends of each rack. The positioning assembly is located within the inner cavity of the pressing groove.

[0006] Preferably, the positioning assembly includes: a first spring, a locking block, a positioning seat, a guide groove, a positioning hole, a pressing rod, and a third spring. The first spring is embedded in the inner cavity of the extrusion groove, and its inner end is engaged with the inner side of the extrusion groove. A portion of the locking block is slidably fitted into the inner cavity of the extrusion groove, and another portion of the locking block slidably extends out of the inner cavity of the extrusion groove. The outer end of the first spring is engaged with the inner side of the locking block. There are four positioning seats, which are respectively located on the left and right sides and the upper and lower ends of the outer cylinder. The four positioning seats are respectively located at two of the first springs. On the upper and lower sides of a sliding groove, the inner side of the positioning seat is provided with guide grooves in opposite directions along the front and back. The inner cavity of the guide groove is provided with a positioning hole. The outer end of the locking block can be slidably adapted to extend into the inner cavity of the positioning hole corresponding to its position. The pressing rod can be slidably adapted to insert into the outer side of the inner cavity of the positioning hole. The outer end of the pressing rod can be slidably extended out of the outer side of the positioning hole. The inner end of the pressing rod and the outer end of the locking block are in contact. The third spring is sleeved on the outer wall of the pressing rod. One end of the third spring is locked on the outer wall of the pressing rod, and the other end of the third spring is locked on the inner wall of the positioning hole.

[0007] Preferably, the fixing mechanism includes: a third guide rod, a fourth spring, a first wedge block, and an actuation component. The front and rear ends of the third guide rod are respectively disposed on the front and rear sides of the inner cavity of the two third slide grooves. The fourth spring is sleeved on the outer wall of the third guide rod, and one end of the fourth spring is engaged with the inner wall of the third slide groove. The rear bottom end of the first wedge block is slidably and appropriately inserted into the inner cavity of the third slide groove, and the first wedge block is slidably and appropriately engaged with the outer wall of the third guide rod. The other end of the fourth spring is engaged with the outer wall of the first wedge block. The rear left and right ends of the two first wedge blocks are respectively in contact with the outer walls of the four push rods. The actuation component is disposed on the inner wall of the outer cylinder.

[0008] Preferably, the execution component includes: a support frame, a fourth guide rod, a second wedge block, a fifth spring, and a plug rod. There are four support frames, each located on the upper and lower front ends of the inner cavity of the outer cylinder. The outer wall of the fourth guide rod is slidably fitted into the inner end of the support frame. There are two second wedge blocks, each located on the left and right sides of the four fourth guide rods. The fifth spring is sleeved on the outer wall of the fourth guide rod, with one end of the fifth spring engaged with the outer wall of the second wedge block and the other end engaged with the outer wall of the support frame. The plug rod is located in the middle of the inner side of the second wedge block.

[0009] Preferably, the socket is further provided with a fixing plate on the rear side. There are two fixing plates, which are respectively located at the middle of the upper and lower ends of the rear side of the socket. The top rear side of the fixing plate is provided with a through-hole. The two plug rods are slidably and compatiblely inserted into the inner cavity of the plug hole corresponding to their respective positions.

[0010] Preferably, the socket is further provided with a positioning plate and a positioning frame on its rear side. The positioning plate is located at the middle of the bottom rear end of the socket, and the positioning frame is located at the bottom end of the outer cylinder. The positioning plate is slidably and compatiblely inserted into the inner cavity of the positioning frame.

[0011] The charging cable for new energy vehicles proposed in this invention has the following advantages: 1. When the socket and plug need to be separated, the present invention drives the locking block to exit the positioning hole by squeezing the pressing rod, and the rack automatically moves forward to reset under the action of the second spring, thereby driving the plug to move backward to separate from the socket. During this process, the backward movement of the plug drives the push rod to release the squeezing of the first wedge block, so that the plug automatically exits the socket, achieving complete unlocking. The disconnection operation is simple and reliable. Each locking mechanism is automatically released in sequence, avoiding damage to the connector caused by violent disassembly. At the same time, after the plug is pulled out, the outer shell can be left on the socket, forming physical protection for the socket end and preventing dust intrusion and accidental bumps.

[0012] 2. When the socket and plug need to be connected, the positioning plate is first inserted into the positioning frame to achieve preliminary alignment, and the threaded cylinder is rotated and fixed to the threaded seat, so that the outer cylinder and the socket form a stable connection. At this time, the socket and plug are in corresponding positions, and the system enters a safe pre-connection state. The outer shell provides a physical barrier for the socket in advance, and the operator can calmly check the alignment and sealing status without high pressure risk. At the same time, it establishes a precise rigid guide track for subsequent insertion, fundamentally eliminating the possibility of misalignment or oblique insertion.

[0013] 3. In this invention, pulling the rack backward drives the plug forward along the inner cavity of the outer cylinder through the meshing of the gears and teeth, allowing the socket to gradually insert into the inner cavity of the plug. During the forward movement of the plug, the positioning slider slides along the positioning groove to ensure accurate insertion path. The gear and rack drive method makes the insertion force uniform and controllable, avoiding excessive force or angle deviation caused by direct manual pushing, effectively protecting the pins and sockets from damage and improving the connection success rate.

[0014] 4. In this invention, the plug continues to move forward, driving the push rod to push the first wedge block forward. The first wedge block squeezes the second wedge block to move inward, thereby driving the plug rod to insert into the socket on the fixing plate, achieving final mechanical locking. At the same time, the rack drives the locking block to move to the positioning hole. Under the action of the first spring, the locking block springs into the positioning hole, fixing the position of the rack. With the coordinated action of multiple locking mechanisms, the plug rod inserts into the socket to form an anti-dislodgement safety, and the locking block locks to ensure the plug position is stable. The locking mechanisms restrain each other to form a stable self-locking state. Multiple protections effectively resist vehicle vibration and impact, avoiding the risk of high-voltage arc caused by accidental loosening of the connector.

[0015] 5. By creating a pre-connection state, this device completes mechanical positioning and status self-checking without high-voltage risks, fundamentally improving operational safety and effectively protecting terminals from damage. The multiple locking mechanisms work together to ensure a stable and reliable connection that resists vibration and loosening. It solves the core problems of high operational risks, insufficient connection reliability, and inconvenient maintenance in existing technologies, and has significant technological advancements and practical value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the plug structure; Figure 4 This is a schematic diagram of the structure of the inner cavity of the outer cylinder; Figure 5 This is an exploded view of the outer cylinder; Figure 6 for Figure 2 Enlarged view of point A; Figure 7 for Figure 4 Enlarged view of point B; Figure 8 for Figure 4 Enlarged view of point C; Figure 9 for Figure 4 Enlarged view of point D; Figure 10 for Figure 4 Enlarged view of point E; Figure 11 for Figure 5 Enlarged view of point F.

[0017] In the diagram: 1. Socket; 2. Positioning slider; 3. Threaded seat; 4. Fixing plate; 5. Insertion hole; 6. Positioning plate; 7. Outer cylinder; 8. Drive mechanism; 81. Rotating rod; 82. Gear; 83. Rack; 84. Extrusion groove; 85. First spring; 86. Locking block; 87. Second guide rod; 88. Second spring; 89. Positioning seat; 810. Guide groove; 811. Positioning hole; 812. Pressing rod; 813. Third spring 9. Spring; 91. Fixing mechanism; 92. Third guide rod; 93. Fourth spring; 94. First wedge block; 95. Support frame; 96. Fourth guide rod; 97. Second wedge block; 98. Fifth spring; 99. Insert rod; 10. First slide groove; 11. Second slide groove; 12. Third slide groove; 13. Threaded cylinder; 14. Plug; 15. Push rod; 16. First guide rod; 17. Positioning slide groove; 18. Tooth; 19. Positioning frame. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-11This invention provides a technical solution for a charging cable for new energy vehicles, comprising: a socket 1, positioning sliders 2, threaded seat 3, fixing plate 4, insertion hole 5, positioning plate 6, outer cylinder 7, driving mechanism 8, fixing mechanism 9, first sliding groove 10, second sliding groove 11, third sliding groove 12, threaded cylinder 13, plug 14, push rod 15, first guide rod 16, positioning sliding groove 17, teeth 18, and positioning frame 19. The number of positioning sliders 2 is four, and the four positioning sliders 2 are respectively disposed on the upper and lower sides and left and right ends of the socket 1. The positioning sliders 2 are used to cooperate with the positioning sliding groove 17 on the plug 14 during the insertion process, playing a guiding and alignment role to ensure that the plug 14 is inserted into the socket 1 along the correct path. The threaded seat 3 is disposed on the rear side of the socket 1. The threaded seat 3 is used for... The outer cylinder 7 and the socket 1 are mechanically fixed together by screwing the threaded cylinder 13. Two fixing plates 4 are respectively located at the middle of the upper and lower ends of the rear side of the socket 1. The top rear side of each fixing plate 4 has a through-hole 5. Two insert rods 98 are slidably and appropriately inserted into the inner cavity of the corresponding insert hole 5. The fixing plates 4 cooperate with the insert rods 98 to achieve final locking. A positioning plate 6 is located at the middle of the bottom rear side of the socket 1. The positioning plate 6 cooperates with the positioning bracket 19 to achieve preliminary alignment of the socket 1 and the outer cylinder 7 before connection. The threaded cylinder 13 is screwed onto the outer wall of the threaded seat 3. The threaded cylinder 13 is used to fix the outer cylinder 7 to the socket 1 and is also connected to the outer cylinder 7 via a bearing, allowing the outer cylinder 7 to rotate relative to it. The outer cylinder 7 is rotatably mounted on the rear side of the inner wall of the threaded cylinder 13 via a bearing on its front side. First grooves 10 communicating with the inner cavity are formed on both the left and right sides of the outer cylinder 7 along the front-back direction. Second grooves 11 communicating with the inner cavity are formed on both the upper and lower sides of the outer cylinder 7 at both ends along the front-back direction. Third grooves 12 are formed on the upper and lower front ends of the inner cavity of the outer cylinder 7. The outer cylinder 7 is the main structure for accommodating the plug 14 and guiding its sliding. A drive mechanism 8 is located in the inner cavity of the outer cylinder 7 and is used to drive the plug 14 to slide back and forth along the inner cavity of the outer cylinder 7, realizing the insertion and separation actions. A fixing mechanism 9 is located in the inner cavity of the outer cylinder 7 and is used to perform final locking after the plug 14 is fully inserted, ensuring a stable and reliable connection. The plug 14 is slidable. The plug 14 is slidably inserted into the inner cavity of the outer cylinder 7 and into the outer wall of the socket 1. Positioning grooves 17 are provided on the upper, lower, left, and right ends of the plug 14 along the front-to-back direction. Positioning sliders 2 are slidably inserted into the inner cavity of the positioning grooves 17. The plug 14 is existing technology and will not be described in detail here. The plug 14 is a connecting component at the end of the wire harness; its front-to-back sliding motion enables insertion and separation from the socket 1. The front and rear ends of the first guide rod 16 are respectively located on the front and rear sides of the inner cavity of the second groove 11. The first guide rod 16 guides and limits the sliding of the push rod 15 and, together with the push rod 15, supports the plug 14. There are four push rods 15, respectively located on the upper, lower, left, and right ends of the plug 14.The outer walls of four push rods 15 are slidably fitted into the inner cavities of four second sliding grooves 11. The push rods 15 are also slidably fitted into the outer walls of the first guide rod 16. The push rods 15 trigger the action of the fixing mechanism 9 when the plug 14 moves. Several teeth 18 are equidistantly arranged on the left and right sides of the plug 14 along the front-back direction. The teeth 18 mesh with the gears 82 in the drive mechanism 8, converting the rotational motion into linear sliding of the plug 14. A positioning frame 19 is located at the bottom end of the outer cylinder 7. A positioning plate 6 is slidably fitted into the inner cavity of the positioning frame 19. The positioning frame 19 cooperates with the positioning plate 6 to achieve preliminary positioning of the outer cylinder 7 and the socket 1 before connection.

[0020] As a preferred embodiment, the drive mechanism 8 further includes: a rotating rod 81, a gear 82, a rack 83, a pressing groove 84, a second guide rod 87, a second spring 88, and a positioning assembly. There are two rotating rods 81, with their upper and lower ends rotatably mounted on the upper and lower sides of the inner cavity of the outer cylinder 7 via bearings. The rotating rods 81 are used to mount and support the gear 82, allowing the gear 82 to rotate freely around its axis. The gear 82 is sleeved on the outer wall of the rotating rod 81 and locked by a set screw. The two gears 82 mesh with the teeth 18 on the left and right sides of the plug 14, respectively. The gears 82 convert the linear motion of the rack 83 into rotational motion, thereby driving the plug 14 to slide back and forth along the inner cavity of the outer cylinder 7. The front and rear ends of the second guide rod 87 are respectively located on the front and rear sides of the inner cavity of the first sliding groove 10. The second guide rod 87 guides and limits the sliding of the rack 83, ensuring that the rack 83 moves smoothly along a linear trajectory. The second spring 88 is sleeved on the outer wall of the second guide rod 87. On the rear side, the rear end of the second spring 88 is engaged with the rear side of the inner cavity of the first slide groove 10. The second spring 88 is a rotary spring, which undergoes elastic deformation after being compressed or stretched by external force, and returns to its initial state after the external force is removed. The second spring 88 is used to store elastic potential energy when the rack 83 is pulled backward, and to provide driving force for the rack 83 to automatically move forward and reset when the connection needs to be disconnected. There are two racks 83, and the two racks 83 are slidably fitted into the inner cavities of the two first slide grooves 10. On the side, the rack 83 is slidably and appropriately matched to the outer wall of the second guide rod 87. The front end of the second spring 88 is engaged with the rear side of the rack 83. The two racks 83 mesh with the two gears 82 respectively. The upper and lower rear ends of the rack 83 are provided with pressing grooves 84. The rack 83 is used to drive the gears 82 to rotate when moving back and forth. The positioning component is set in the inner cavity of the pressing groove 84. The positioning component is used to lock the rack 83 when it moves to the predetermined position, thereby fixing the position of the plug 14.

[0021] The positioning assembly includes: a first spring 85, a locking block 86, a positioning seat 89, a guide groove 810, a positioning hole 811, a pressing rod 812, and a third spring 813. The first spring 85 is embedded in the inner cavity of the extrusion groove 84, and its inner end is engaged with the inner side of the extrusion groove 84. The first spring 85 is a rotary spring, which undergoes elastic deformation after being compressed or stretched by external force, and returns to its initial state after the external force is removed. The first spring 85 is used to apply an outward elastic force to the locking block 86, causing the locking block 86 to extend out of the extrusion groove 84. A portion of the locking block 86 is slidable. The corresponding part is inserted into the inner cavity of the extrusion groove 84. The other part of the locking block 86 extends slidably out of the inner cavity of the extrusion groove 84. The outer end of the first spring 85 is engaged with the inner side of the locking block 86. The locking block 86 is used to insert into the positioning hole 811 when it moves to the positioning hole 811 to lock the position of the rack 83. There are four positioning seats 89. The four positioning seats 89 are respectively set on the upper and lower ends of the left and right sides of the outer cylinder 7. The four positioning seats 89 are respectively located on the upper and lower sides of the two first sliding grooves 10. The inner side of the positioning seat 89 is provided with guide grooves 810 in the front and back directions. A positioning hole 811 is provided on the rear side of the inner cavity of the guide groove 810. The outer end of the locking block 86 is slidably adapted to extend into the inner cavity of the positioning hole 811 corresponding to its position. The positioning seat 89 is used to provide a guiding and positioning structure for the movement and locking of the locking block 86 by opening the guide groove 810 and the positioning hole 811. The pressing rod 812 is slidably adapted to be inserted into the outer side of the inner cavity of the positioning hole 811. The outer end of the pressing rod 812 slidably extends out of the outer side of the positioning hole 811. The inner end of the pressing rod 812 contacts the outer end of the locking block 86. The pressing rod 812 is used to press the locking block 86 when needed. To unlock, press inward to push the latch 86 out of the positioning hole 811. The third spring 813 is sleeved on the outer wall of the pressing rod 812. One end of the third spring 813 is engaged with the outer wall of the pressing rod 812, and the other end of the third spring 813 is engaged with the inner wall of the positioning hole 811. The third spring 813 is a rotary spring. It undergoes elastic deformation after being squeezed or stretched by external force. After the external force is removed, it returns to its initial state. The third spring 813 is used to provide a reset force after the pressing rod 812 is pressed, so that the pressing rod 812 automatically resets to the outside after the external force is removed.

[0022] As a preferred embodiment, the fixing mechanism 9 further includes: a third guide rod 91, a fourth spring 92, a first wedge block 93, and an actuation assembly. The front and rear ends of the third guide rod 91 are respectively disposed on the front and rear sides of the inner cavities of the two third slide grooves 12. The third guide rod 91 is used to guide and limit the sliding of the first wedge block 93, ensuring that the first wedge block 93 moves smoothly along a straight trajectory. The fourth spring 92 is sleeved on the outer wall of the third guide rod 91, and one end of the fourth spring 92 is engaged with the inner wall of the third slide groove 12. The fourth spring 92 is a rotary spring, which undergoes elastic deformation after being compressed or stretched by external force, and returns to its initial state after the external force is removed. The fourth spring 92 is used to guide the first wedge block 93 when the plug 14 is pulled out. The wedge block 93 is pulled backward to automatically reset. The rear bottom end of the first wedge block 93 is slidably fitted into the inner cavity of the third slide groove 12. The first wedge block 93 is slidably fitted into the outer wall of the third guide rod 91. The other end of the fourth spring 92 is engaged with the outer wall of the first wedge block 93. The rear left and right ends of the two first wedge blocks 93 are in contact with the outer walls of the four push rods 15 respectively. The first wedge block 93 is used to be pushed forward and slide when the push rod 15 moves forward, and transmits the thrust to the second wedge block 96 through its wedge-shaped inclined surface. The actuation component is set on the inner wall of the outer cylinder 7. The actuation component is used to receive the thrust of the first wedge block 93 and convert it into the insertion action of the insertion rod 98.

[0023] The actuating components include: support frames 94, fourth guide rods 95, second wedge blocks 96, fifth springs 97, and insert rods 98. There are four support frames 94, which are respectively located on the upper and lower front ends and left and right sides of the inner cavity of the outer cylinder 7. The support frames 94 are used to install and support the fourth guide rods 95, providing a guiding foundation for the sliding of the second wedge blocks 96. The outer wall of the fourth guide rods 95 is slidably fitted into the inner end of the support frames 94. The fourth guide rods 95 are used to guide and limit the sliding of the second wedge blocks 96, ensuring smooth radial movement. There are two second wedge blocks 96, with their left and right sides respectively located on the outer walls of the four fourth guide rods 95. The second wedge blocks 96 are used to be pressed inward when the first wedge block 93 moves forward. The side slides, thereby driving the insertion rod 98 to move inward. The fifth spring 97 is sleeved on the outer wall of the fourth guide rod 95. One end of the fifth spring 97 is engaged with the outer wall of the second wedge block 96, and the other end of the fifth spring 97 is engaged with the outer wall of the support frame 94. The fifth spring 97 is a rotary spring. It undergoes elastic deformation after being squeezed or stretched by external force and returns to its initial state after the external force is removed. The fifth spring 97 is used to apply an outward pushing force to the second wedge block 96 when the plug 14 is pulled out, so that it automatically resets to the outside and drives the insertion rod 98 out of the socket. The insertion rod 98 is set in the middle of the inner side of the second wedge block 96. The insertion rod 98 is used to insert into the socket 5 on the fixing plate 4 when the second wedge block 96 moves inward, forming a mechanical anti-disengagement lock. When the second wedge block 96 resets to the outside, it exits the socket 5 and releases the locking state.

[0024] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0025] Step 1: When it is necessary to separate the socket 1 and the plug 14, first press the pressing rod 812. The pressing rod 812 moves inward, which will compress the third spring 813 and cause it to deform elastically. At the same time, the pressing rod 812 presses the locking block 86, causing the locking block 86 to move into the inner cavity of the pressing groove 84, and compresses the first spring 85, causing it to deform elastically. This causes the locking block 86 to gradually move out of the inner cavity of the positioning hole 811. After the locking block 86 has completely moved out of the inner cavity of the positioning hole 811, under the elastic force of the second spring 88, and by manually pushing the rack 83 forward, the rack 83 can drive the locking block 86 forward, causing the locking block 86 to move into the inner cavity of the guide groove 810. At the same time, the forward movement of the rack 83 will cause the gear 8... 2. Rotate the rack 83. When the rack 83 moves forward, the tooth 18 will drive the plug 14 to move backward, causing the plug 14 and socket 1 to gradually separate. When the plug 14 moves backward, it will drive the push rod 15 to move backward, thereby releasing the squeezing and positioning of the first wedge block 93. Under the elastic force of the fourth spring 92, the first wedge block 93 will be pulled to move backward. Then, under the elastic force of the fifth spring 97, the second wedge block 96 will be pushed to move outward, thereby driving the plug rod 98 to move outward until the plug rod 98 is completely separated from the inner cavity of the socket 5. After the plug 14 and socket 1 are completely separated, rotate the threaded cylinder 13 to separate the outer cylinder 7 and socket 1. Step 2: When it is necessary to reconnect the socket 1 and plug 14, align the positioning plate 6 and positioning bracket 19, and insert the positioning plate 6 into the inner cavity of the positioning bracket 19. At this time, the position of the threaded cylinder 13 corresponds to the position of the threaded seat 3, and the positions of the socket 1 and plug 14 also correspond. Rotate the threaded cylinder 13. With the cooperation between the threaded cylinder 13 and the threaded seat 3, the outer cylinder 7 and socket 1 can be fixedly connected. Pull the rack 83 backward. The rack 83 moves backward, and the gear 82 and the tooth 18 can be used to connect them. The plug 14 moves forward in coordination with the socket 1. Since the positions of the plug 14 and the socket 1 are now aligned, the socket 1 is gradually inserted into the inner cavity of the plug 14. The forward movement of the plug 14 causes the push rod 15 to move forward. The rearward movement of the rack 83 compresses the second spring 88, causing it to deform elastically. At the same time, it causes the locking block 86 to move backward along the inner cavity of the guide groove 810. As the plug 14 drives the push rod 15 forward, the push rod 15 contacts the rear side of the first wedge block 93, and the push rod 15... Under the action of the first wedge block 93, the first wedge block 93 is pushed forward and the fourth spring 92 is stretched and deformed elastically. The forward movement of the first wedge block 93 will squeeze and push the second wedge block 96 to drive the plug rod 98 to move inward and squeeze the fifth spring 97 to deform elastically until the plug rod 98 is inserted into the inner cavity of the corresponding socket 5. At this time, the socket 1 and the plug 14 are fully connected. At this time, the rack 83 drives the locking block 86 to move to the positioning hole 811. Under the elastic force of the first spring 85, the locking block 86 can be pushed into the inner cavity of the positioning hole 811. The position of the rack 83 can be fixed by the cooperation between the locking block 86 and the positioning hole 811. The position of the plug 14 can be fixed by the rack 83, thus ensuring the position of the push rod 15 is fixed and further ensuring the position of the first wedge block 93 is fixed. The stability of the connection between the socket 1 and the outer cylinder 7 can be ensured by the cooperation between the plug rod 98 and the socket 5, and by the cooperation between the threaded seat 3 and the threaded cylinder 13.

[0026] In summary, this device, by creating a pre-connection state, completes mechanical positioning and status self-checking without high-voltage risks, fundamentally improving operational safety and effectively protecting terminals from damage. The synergistic action of multiple locking mechanisms ensures a stable and reliable connection that resists vibration and loosening. It solves the core problems of high operational risks, insufficient connection reliability, and inconvenient maintenance in existing technologies, demonstrating significant technological advancement and practical value.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging cable for new energy vehicles, characterized in that, include: Socket (1); Positioning sliders (2), the number of the positioning sliders (2) is four, and the four positioning sliders (2) are respectively set on the upper and lower sides and left and right ends of the socket (1); A threaded seat (3) is provided on the rear side of the socket (1); Threaded cylinder (13), which is screwed to the outer wall of threaded seat (3); The outer cylinder (7) is rotatably mounted on the rear side of the inner wall of the threaded cylinder (13) via a bearing on the front side of the outer wall. The left and right sides of the outer cylinder (7) are provided with a first sliding groove (10) communicating with its inner cavity along the front-back direction. The upper and lower sides of the outer cylinder (7) are provided with a second sliding groove (11) communicating with its inner cavity along the front-back direction at both the left and right ends. The upper and lower sides of the inner cavity of the outer cylinder (7) are provided with a third sliding groove (12) at the front end. A drive mechanism (8) is disposed in the inner cavity of the outer cylinder (7); A fixing mechanism (9) is provided in the inner cavity of the outer cylinder (7); The plug (14) is slidably and compatiblely inserted into the inner cavity of the outer cylinder (7). The plug (14) is slidably and compatiblely inserted into the outer wall of the socket (1). The upper and lower sides and left and right ends of the plug (14) are provided with positioning grooves (17) along the front and back direction. The positioning slider (2) is slidably and compatiblely inserted into the inner cavity of the positioning groove (17). The first guide rod (16) is located at the front and rear ends of the first guide rod (16) respectively on the front and rear sides of the inner cavity of the second slide groove (11); Push rod (15), the number of push rods (15) is four, the four push rods (15) are respectively set on the upper and lower sides and left and right ends of the plug (14), the outer walls of the four push rods (15) are respectively slidably adapted to be inserted into the inner cavity of the four second slide grooves (11), and the push rods (15) are slidably adapted to be fitted to the outer wall of the first guide rod (16); Teeth (18), the number of teeth (18) is several, and several teeth (18) are equidistantly arranged on the left and right sides of the plug (14) along the front and back directions; The drive mechanism (8) includes: Two rotating rods (81) are provided, with their upper and lower ends rotatably mounted on the upper and lower sides of the inner cavity of the outer cylinder (7) via bearings. Gear (82), the gear (82) is sleeved on the outer wall of the rotating rod (81) and locked by a set screw. The two gears (82) respectively mesh with the teeth (18) on the left and right sides of the plug (14); The second guide rod (87) is located at the front and rear ends of the first slide groove (10) respectively on the front and rear sides of the inner cavity; The second spring (88) is sleeved on the rear side of the outer wall of the second guide rod (87), and the rear end of the second spring (88) is engaged in the rear side of the inner cavity of the first slide groove (10); Two racks (83) are provided. The two racks (83) are slidably fitted into the rear side of the inner cavity of the two first slide grooves (10). The racks (83) are slidably fitted into the outer wall of the second guide rod (87). The front end of the second spring (88) is engaged with the rear side of the racks (83). The two racks (83) are respectively meshed with the two gears (82). The upper and lower rear ends of the racks (83) are provided with extrusion grooves (84). A positioning component is disposed in the inner cavity of the extrusion groove (84); The fixing mechanism (9) includes: The third guide rod (91) is located at the front and rear ends of the two third slide grooves (12) respectively on the front and rear sides of the inner cavity; The fourth spring (92) is sleeved on the outer wall of the third guide rod (91), and one end of the fourth spring (92) is engaged with the inner wall of the third slide groove (12); The first wedge (93) has its rear bottom end slidably fitted into the inner cavity of the third slide groove (12), and the first wedge (93) is slidably fitted into the outer wall of the third guide rod (91). The other end of the fourth spring (92) is engaged with the outer wall of the first wedge (93). An execution component is disposed on the inner wall of the outer cylinder (7).

2. The charging cable for new energy vehicles according to claim 1, characterized in that: The positioning component includes: The first spring (85) is embedded in the inner cavity of the extrusion groove (84), and the inner end of the first spring (85) is engaged with the inner side of the inner cavity of the extrusion groove (84). A locking block (86) is provided, a portion of which is slidably adapted to be inserted into the inner cavity of the extrusion groove (84), and another portion of which is slidably extended out of the inner cavity of the extrusion groove (84). The outer end of the first spring (85) is engaged with the inner side of the locking block (86). Positioning seat (89), the number of the positioning seat (89) is four, the four positioning seats (89) are respectively set on the upper and lower ends of the left and right sides of the outer cylinder (7), the four positioning seats (89) are respectively located on the upper and lower sides of the two first sliding grooves (10), the inner side of the positioning seat (89) is provided with a guide groove (810) in the front and back directions, the inner cavity of the guide groove (810) is provided with a positioning hole (811) on the rear side, and the outer end of the locking block (86) can slide and adapt to extend into the inner cavity of the positioning hole (811) corresponding to its position; The pressing rod (812) is slidably adapted to be inserted into the outer side of the inner cavity of the positioning hole (811), the outer end of the pressing rod (812) extends slidably out of the outer side of the positioning hole (811), and the inner end of the pressing rod (812) is in contact with the outer end of the locking block (86). The third spring (813) is sleeved on the outer wall of the pressing rod (812), one end of the third spring (813) is engaged with the outer wall of the pressing rod (812), and the other end of the third spring (813) is engaged with the inner wall of the positioning hole (811).

3. The charging cable for new energy vehicles according to claim 2, characterized in that: The two rear left and right ends of the first wedge blocks (93) respectively contact the outer walls of the four push rods (15).

4. A charging cable for new energy vehicles according to claim 3, characterized in that: The execution component includes: The number of support frames (94) is four, and the four support frames (94) are respectively set on the upper and lower front ends of the inner cavity of the outer cylinder (7); The fourth guide rod (95) is slidably and compatiblely inserted into the inner end of the support frame (94) at the middle of its outer wall. The second wedge (96) has two components, and the left and right sides of the two second wedges (96) are respectively disposed on the outer walls of the four fourth guide rods (95); The fifth spring (97) is sleeved on the outer wall of the fourth guide rod (95), one end of the fifth spring (97) is engaged with the outer wall of the second wedge block (96), and the other end of the fifth spring (97) is engaged with the outer wall of the support frame (94); Insert rod (98), which is located at the inner middle of the second wedge block (96).

5. A charging cable for new energy vehicles according to claim 4, characterized in that: The socket (1) is also provided with a fixing plate (4) on the rear side. There are two fixing plates (4). The two fixing plates (4) are respectively located at the middle of the upper and lower ends of the socket (1). The top rear side of the fixing plate (4) is provided with a through-hole (5). The two plug rods (98) are respectively slidably and compatiblely inserted into the inner cavity of the plug hole (5) corresponding to their positions.

6. A charging cable for new energy vehicles according to claim 5, characterized in that: The rear side of the socket (1) is also provided with: Positioning plate (6), the positioning plate (6) is disposed at the middle of the bottom rear end of the socket (1); Positioning frame (19) is located at the bottom of the outer cylinder (7), and positioning plate (6) is slidably and compatiblely inserted into the inner cavity of positioning frame (19).

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