A vehicle-end power connector

Abstract

The present invention provides a vehicle-end power connector, which belongs to the technical field of railway vehicles, and includes a socket, a connection component, a safety component and a plug: the socket includes a first insulating shell and a first terminal, the connection component includes a connection block, an elastic positioning member and a cover plate, the connection block is provided with a through installation channel, the safety component includes a rotating ring and an operating part, one end of the rotating ring has a rotating hole and an avoidance groove, and the outer circumferential surface of the rotating ring is provided with a positioning groove connected to the elastic positioning member; the plug includes a second insulating shell, a second terminal and a stopper, the second insulating shell and the stopper pass through the rotating hole and the avoidance groove into the installation channel, and the second terminal is electrically connected to the first terminal. The vehicle-end power connector provided by the present invention prevents the plug, socket and cable from being damaged, avoids the safety hazard of leakage, and prevents external dust and other impurities from corroding the first terminal.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway vehicles, and more specifically, relates to a vehicle-end power connector. Background Art

[0002] The vehicle-end power connector is a common connector on railway passenger cars. It is usually installed at the end of the vehicle and is used for medium-voltage power transmission between vehicles. The vehicle-end power connector is generally composed of a socket and a plug. The plug has a jumper cable for connecting to another vehicle. After the plug and the socket are connected, the locking mechanism on the socket is used to lock the plug to prevent the plug from falling off when the vehicle is running. After the plug and the socket are connected, they are sealed to prevent water and dust from entering.

[0003] After the existing vehicle-end power connector is locked and fixed by the locking mechanism, the connected plug is completely fixed and secure. However, when the vehicle coupler fails or the vehicle derails, the cables between the vehicles will be subjected to the traction force of the vehicle. At this time, the jumper cables will be damaged until they are torn off. The damaged cable belts have the risk of medium and high voltage leakage, which can easily cause great harm to people. In addition, the exposed terminal blocks are easily damaged by erosion by external impurities, dust, etc. Summary of the invention

[0004] The object of the present invention is to provide a vehicle-end power connector to solve the technical problems in the prior art that cables present potential safety hazards after being damaged and torn off, and that the connection terminals are susceptible to corrosion.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a vehicle-end power connector, including a socket, a connection component, a safety component and a plug:

[0006] The socket comprises a first insulating shell, a first terminal installed in the first insulating shell, a connecting hole is provided on the first insulating shell, and the first insulating shell is installed on the wall of the vehicle body, and one end of the first insulating shell is located outside the wall of the vehicle body;

[0007] The connection assembly includes a connection block, an elastic positioning member and a cover plate. The connection block is provided with a through installation channel, and one end of the connection block is provided with a fixing portion for fixing to the vehicle body wall; the cover plate is hinged to the other end of the connection block; the elastic positioning member is installed at the other end of the connection block and communicates with the installation channel; the first insulating housing and one end of the first wiring terminal enter the installation channel;

[0008] The safety component comprises a rotating ring and an operating part, one end of the rotating ring has a rotating hole and an avoidance groove, the rotating ring is rotatably connected to the installation channel, and a positioning groove connected to the elastic positioning member is formed on the outer circumferential surface of the rotating ring;

[0009] The plug includes a second insulating shell, a second terminal installed in the second insulating shell, and a stopper installed on the outer side of the second insulating shell, the second insulating shell is adapted to the rotation hole, and the stopper is adapted to the avoidance groove; the second insulating shell and the stopper pass through the rotation hole and the avoidance groove into the installation channel, and the second terminal is electrically connected to the first terminal.

[0010] In a possible implementation, the other end of the connecting block is provided with two mounting plates extending axially outward, one end of the covering plate is connected to the two mounting plates via a hinge shaft, and a torsion spring is provided on the hinge shaft; the other end of the connecting block is provided with a notch groove, and the notch groove is used to install the operating part.

[0011] In a possible implementation, a limiting protrusion is provided at one end of the cover plate close to the hinge shaft, and a limiting groove which is mounted in cooperation with the limiting protrusion is provided on the rotating ring.

[0012] In a possible implementation manner, a supporting protrusion is provided on the cover plate, and the supporting protrusion is used to support the second insulating shell.

[0013] In a possible implementation, there are multiple elastic positioning members, which are evenly distributed around the central axis of the mounting channel; a plurality of bosses are provided on the outer wall of the connecting block, and the bosses are provided with mounting holes connected to the mounting channel, and an annular groove of the positioning groove, and the elastic positioning member includes an elastic member installed in the mounting hole and a positioning bead connected to the elastic member, and the positioning bead enters the mounting channel and is connected to the annular groove.

[0014] In a possible implementation, the rotating ring is provided with an annular conical surface for entering the installation channel and contacting the positioning beads.

[0015] In a possible implementation, the fixing portion is a flange, and a receiving groove and a clamping groove located on the bottom surface of the receiving groove are provided at one end of the flange close to the car wall. An annular flange and a clamping portion located on the annular flange are provided on the outer surface of the first insulating shell, the annular flange is installed in the receiving groove, and the clamping portion enters the clamping groove.

[0016] In a possible implementation, the first wiring terminal is a male terminal, and the second wiring terminal is a female terminal.

[0017] In a possible implementation, a mating installation surface connected to the inner wall of the first insulating shell is provided on the outer wall of the second insulating shell, and a sealing ring is provided on the mating installation surface.

[0018] In a possible implementation, the first insulating shell and the second insulating shell are both made of rubber material, and the first insulating shell and the first connecting terminal are injection molded into an integral structure, and the second insulating shell and the second connecting terminal are injection molded into an integral structure.

[0019] The beneficial effect of the vehicle-end power connector provided by the present invention is that, compared with the prior art, the vehicle-end power connector of the present invention, when in use, firstly installs the first insulating shell of the socket on the wall of the vehicle compartment, with one end located outside the wall of the vehicle compartment, fixes the connecting block of the connecting assembly on the wall of the vehicle compartment through the fixing part, and the installation channel is connected with the connecting hole; opens the cover plate and installs the rotating ring of the installation assembly on one end in the installation channel, and the elastic positioning piece is inserted into the positioning groove to axially position the rotating ring, and then controls the second insulating shell of the plug to pass through the rotating hole and the avoidance groove into the installation channel, and the second wiring terminal enters the connecting hole and is connected to the first wiring terminal; The operating part drives the rotating ring to rotate, so that the avoidance groove and the stop part are misaligned to realize the positioning of the plug, thereby completing the connection between the plug and the socket, and ensuring stable power transmission between the carriages; when the plug is subjected to strong external pulling, the elastic positioning piece will be squeezed out of the positioning groove, so that the rotating ring and the plug will be pulled out together, and the vehicle-end power connector will be disconnected, preventing the plug, socket and cable from being damaged, and avoiding the safety hazard of leakage; at the same time, when power transmission is not needed, the plug and the socket are separated, the rotating ring is installed on the connecting block, and the installation channel is closed with a covering plate to prevent external dust and other impurities from corroding the first terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of a vehicle-side power connector provided by an embodiment of the present invention;

[0022] Figure 2 An exploded view of a vehicle-end power connector provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a socket provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the connection assembly provided in the embodiment of the present invention Figure 1 ;

[0025] Figure 5A schematic diagram of the structure of the connection assembly provided in the embodiment of the present invention Figure 2 ;

[0026] Figure 6 A cross-sectional view of a connection assembly provided in an embodiment of the present invention Figure 1 ;

[0027] Figure 7 A cross-sectional view of a connection assembly provided in an embodiment of the present invention Figure 2 ;

[0028] Figure 8 An isometric view of a safety assembly provided by an embodiment of the present invention;

[0029] Fig. 9 A front view of a security component provided by an embodiment of the present invention;

[0030] Fig.10 A schematic diagram of the connection between the connection component and the safety component provided in an embodiment of the present invention;

[0031] Fig.11 A schematic diagram of the structure of a plug provided in an embodiment of the present invention.

[0032] Among them, the reference numerals in the figure are:

[0033] 1. socket; 11. first insulating housing; 12. first terminal; 13. annular flange; 14. clamping portion; 15. receiving groove; 16. clamping groove; 17. cable; 2. connection assembly; 21. connection block; 211. mounting channel; 212. flange; 213. notch groove; 214. boss; 215. mounting hole; 22. elastic positioning member; 221. elastic member; 222. positioning bead; 23. cover plate; 2 31. Limiting protrusion; 232. Supporting protrusion; 24. Mounting plate; 25. Articulated shaft; 3. Safety component; 31. Rotating ring; 311. Limiting plate; 312. Rotating hole; 313. Avoiding groove; 341. Annular cone; 32. Operating part; 33. Positioning groove; 34. Limiting groove; 4. Plug; 41. Second insulating shell; 42. Second terminal; 43. Stopper; 44. Matching mounting surface; 45. Sealing ring. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] See also Figures 1 to 11 The vehicle-side power connector provided by the present invention is now described. A vehicle-side power connector includes a socket 1, a connection component 2, a safety component 3 and a plug 4:

[0037] The socket 1 comprises a first insulating housing 11 and a first terminal 12 installed in the first insulating housing 11. The first insulating housing 11 is provided with a connection hole. The first insulating housing 11 is installed on the wall of the vehicle body, and one end of the first insulating housing 11 is located outside the wall of the vehicle body.

[0038] The connection assembly 2 includes a connection block 21, an elastic positioning member 22 and a cover plate 23. The connection block 21 is provided with a through installation channel 211, and one end thereof is provided with a fixing portion for fixing to the vehicle body wall; the cover plate 23 is hinged to the other end of the connection block 21; the elastic positioning member 22 is installed at the other end of the connection block 21 and communicates with the installation channel 211; the first insulating housing 11 and one end of the first terminal 12 enter into the installation channel 211;

[0039] The safety assembly 3 includes a rotating ring 31 and an operating portion 32. One end of the rotating ring 31 has a rotating hole 312 and an avoidance groove 313. The rotating ring 31 is rotatably connected to the installation channel 211, and a positioning groove 33 connected to the elastic positioning member 22 is opened on the outer circumferential surface of the rotating ring 31.

[0040] The plug 4 includes a second insulating shell 41, a second terminal 42 installed in the second insulating shell 41, and a stopper 43 installed on the outer surface of the second insulating shell 41. The second insulating shell 41 is adapted to the rotation hole 312, and the stopper 43 is adapted to the avoidance groove 313; the second insulating shell 41 and the stopper 43 pass through the rotation hole 312 and the avoidance groove 313 into the installation channel 211, and the second terminal 42 is electrically connected to the first terminal 12.

[0041] Compared with the prior art, the vehicle-end power connector provided by the present invention is as follows: when in use, the first insulating shell 11 of the socket 1 is first installed on the wall of the vehicle compartment, with one end located outside the wall of the vehicle compartment; the connecting block 21 of the connecting assembly 2 is fixed on the wall of the vehicle compartment through the fixing portion, and the installation channel 211 is communicated with the connecting hole; the cover plate 23 is opened and the rotating ring 31 of the installation assembly is installed on one end in the installation channel 211, and the elastic positioning member 22 is inserted into the positioning groove 33 to axially position the rotating ring, and then the second insulating shell 41 of the plug 4 is controlled to pass through the rotating hole 312 and the avoidance groove 313 into the installation channel 211, and the second wiring terminal 42 enters the connecting hole and is connected to the first wiring terminal 12; the operating portion 32 is used to drive the rotating ring 31 of the installation assembly to the first wiring terminal 12; The rotating ring 31 is rotated to misalign the avoidance groove 313 with the stopper to realize the positioning of the plug 4, thereby completing the connection between the plug 4 and the socket 1, and ensuring stable power transmission between the carriages; when the plug 4 is pulled by strong external force, the elastic positioning member 22 will be squeezed out of the positioning groove 33, so that the rotating ring 31 and the plug 4 are pulled out together, and the vehicle-end power connector is disconnected to prevent the plug 4, the socket 1 and the cable 17 from being damaged, and avoid the safety hazard of leakage; at the same time, when power transmission is not needed, the plug 4 and the socket 1 are separated, the rotating ring 31 is installed on the connecting block 21, and the covering plate 23 is used to close the installation channel 211 to prevent external dust and other impurities from corroding the first terminal 12.

[0042] A limiting plate 311 is provided at one end of the rotating ring 31, a rotating hole 312 and an escape groove 313 are provided on the limiting plate 311, and the escape groove 313 is communicated with the rotating hole 312. The limiting plate 311 is integrally formed with the rotating ring 31.

[0043] The stopper 43 is fixedly mounted on the outer surface of the second insulating shell 41 . Two stopper portions 43 are provided and are symmetrically arranged. There are two avoidance grooves 313 symmetrically arranged on both sides of the rotating hole 312 .

[0044] When the plug 4 is connected to the socket 1 , the cover plate 23 is in an open state, and the lower end surface of the cover plate 23 is supported on the cable 17 .

[0045] See also Figures 1 to 7As a specific embodiment of the vehicle-end power connector provided by the present invention, the other end of the connecting block 21 is provided with two mounting plates 24 extending axially outward, one end of the cover plate 23 is connected to the two mounting plates 24 through a hinge shaft 25, and a torsion spring is provided on the hinge shaft 25; the other end of the connecting block 21 is provided with a notch groove 213, and the notch groove 213 is used to install the operating part 32; the two mounting plates 24 extend outward from one end of the connecting block 21, and a notch groove 213 is opened at the end of the connecting block 21, and the notch groove 213 has a certain curvature. When the rotating ring 31 is installed in the installation channel 211, the operating part 32 is installed in the notch groove 213, and the operating part 32 can rotate in the notch groove 213. The upper end of the cover plate 23 is connected to the two mounting plates 24 via a hinge shaft 25, and a torsion spring is installed on the hinge shaft 25. After the plug 4 is removed from the connecting block 21, the cover plate 23 is rotated downward to block the mounting channel 211 under the restoring force of the torsion spring, thereby preventing external dust and other impurities from corroding the first terminal 12.

[0046] The mounting plate 24 extends outward to provide a storage space for the cover plate 23 rotated to a vertical state. One end face of the operating portion 32 is flush with one end face of the rotating ring 31. The depth of the notch groove 213 is the same as the thickness of the operating portion 32. After the cover plate 23 is rotated to a vertical state, the lower end face is in contact with the end face of the rotating ring 31.

[0047] See also Figure 1 and Figure 2 , Figure 7 and Figure 8 As a specific embodiment of the vehicle-end power connector provided by the present invention, a limiting protrusion 231 is provided at one end of the cover plate 23 close to the hinge shaft 25, and a limiting groove 34 is provided on the rotating ring 31 to be installed in cooperation with the limiting protrusion 231; after the plug 4 is removed from the connecting block 21, the carriage no longer needs power transmission, and at this time the rotating ring 31 is still arranged in the installation channel 211, so the rotating ring 31 has the freedom to rotate in the installation channel 211, and the staff manipulates the operating part 32 to rotate a certain angle until the limiting groove 34 corresponds to the limiting protrusion 231; under the action of the restoring force of the torsion spring, the cover plate 23 can not only close the installation channel 211 after being rotated to the vertical state, but also enable the limiting protrusion 231 to enter the limiting groove 34, so as to limit the rotating ring 31 and prevent the rotating ring 31 from rotating at will. At the same time, the operating part 32 drives the rotating ring 31 to rotate until the limiting groove 34 is offset from the limiting protrusion 231 , and the limiting protrusion 231 presses on the rotating ring 31 to stabilize the cover plate 23 in a horizontal state, so that the staff can check the first terminal 12 in the connecting block 21 .

[0048] See also Figure 7As a specific embodiment of the vehicle-end power connector provided by the present invention, a supporting protrusion 232 is provided on the cover plate 23, and the supporting protrusion 232 is used to support the second insulating shell 41; the supporting protrusion 232 is located on the lower end surface of the cover plate 23 and extends downward. After the plug 4 is connected to the socket 1, the supporting protrusion 232 of the cover plate 23 is supported on the first insulating shell 11 or the cable 17 to achieve a stable open state.

[0049] See also Figure 1 , Figure 2 , Figures 4 to 6 As a specific embodiment of the vehicle-end power connector provided by the present invention, there are multiple elastic positioning members 22, which are evenly arranged around the central axis of the installation channel 211; multiple bosses 214 are arranged on the outer wall of the connection block 21, and the bosses 214 are provided with a mounting hole 215 connected to the installation channel 211 and an annular groove of the positioning groove 33. The elastic positioning member 22 includes an elastic member 221 installed in the mounting hole 215 and a positioning bead 222 connected to the elastic member 221, and the positioning bead 222 enters the installation channel 211 and is connected to the annular groove; the installation channel 211 in the connection block 21 is set to be a stepped hole, and the radial dimension of the end close to the first insulating shell 11 is smaller than the radial dimension of the end away from the first insulating shell 11, and the rotating ring 31 is installed at the larger end of the installation channel 211. Multiple bosses 214 are installed on the outer wall of the connection block 21, and the bosses 214 are evenly arranged along the circumference of the connection block 21, and the bosses 214 correspond to the larger end of the installation channel 211. A mounting hole 215 connected to the mounting channel 211 is provided on the boss 214, and the elastic member 221 in the elastic positioning member 22 is installed into the mounting hole and the positioning bead 222 is fixedly connected to the end of the elastic member 221 close to the mounting channel 211, and a part of the positioning bead 222 enters into the mounting channel 211. Therefore, when the rotating ring 31 is installed into the mounting channel 211, the positioning bead 222 is stuck in the annular groove of the rotating ring 31, thereby playing a positioning role for the rotating ring 31, ensuring that the rotating ring 31 can be stably stuck on the connecting block 21. After the plug 4 passes through the rotating hole 312 on the rotating ring 31 and enters the mounting channel 211 to be electrically connected to the first terminal 12, the hand-held operating part 32 controls the rotating ring 31 to rotate, so that the avoidance groove 313 and the stopper 43 are staggered, and the second insulating shell 41 is locked in the mounting channel 211. At the same time, when the plug 4 is pulled by a strong external force, the positioning bead 222 will be squeezed to move toward the mounting hole 215, so that the rotating ring 31 and the plug 4 are pulled out together, thereby protecting the vehicle-end power connector. In the event of vehicle coupler failure or vehicle derailment, the plug 4 and the socket 1 will not be damaged and leak electricity, causing a personal safety hazard. The rotating ring 31 is made of aluminum alloy.

[0050] See also Figures 8 to 10As a specific embodiment of the vehicle-end power connector provided by the present invention, the rotating ring 31 is provided with an annular conical surface 341 for entering the installation channel 211 and contacting the positioning bead 222, so that the rotating ring 31 can smoothly enter the installation channel 211, and the annular conical surface 341 directly contacts the positioning bead 222, and the positioning bead 222 is moved upward and overcomes the elastic force of the elastic member 221 by the upward force of the annular conical surface 341 on the positioning bead 222; when the annular groove corresponds to the positioning bead 222, the positioning bead 222 enters the annular groove under the action of the elastic force of the elastic member 221. The elastic member 221 is a spring or the like.

[0051] See also Figures 1 to 5 As a specific embodiment of the vehicle-end power connector provided by the present invention, the fixing portion is a flange 212, and a receiving groove 15 and a clamping groove 16 located on the bottom surface of the receiving groove 15 are provided at one end of the flange 212 close to the wall of the vehicle compartment. An annular flange 13 and a clamping portion 14 located on the annular flange 13 are provided on the outer surface of the first insulating shell 11, and the annular flange 13 is installed in the receiving groove 15, and the clamping portion 14 enters the clamping groove 16; the cross-sectional area of ​​the receiving groove 15 is larger than the cross-sectional area of ​​the installation channel 211, and the clamping groove 16 is opened at the intersection of the groove bottom surface and the groove side wall of the receiving groove 15. When the connecting block 21 is operated to be connected with the first insulating shell 11, the annular flange 13 on the first insulating shell 11 enters into the accommodating groove 15, and the clamping portion 14 enters into the clamping groove 16, to prevent the first insulating shell 11 and the connecting block 21 from forming a rotational connection, and then the flange 212 on the connecting block 21 is docked with the wall of the carriage. A plurality of screw holes are provided on the wall of the carriage, and the staff use bolts to pass through the through holes on the flange 212 and connect with the screw holes to achieve a fixed connection between the flange 212 and the wall of the carriage.

[0052] See also Figures 1 to 3 , Fig.11 As a specific embodiment of the vehicle-side power connector provided by the present invention, the first terminal 12 is a male terminal, and the second terminal 42 is a female terminal; the first terminal 12 is a male terminal, so that the male terminal will not be directly exposed to the air under the encirclement of the connecting block 21, thereby protecting the male terminal and eliminating potential safety hazards. After the plug 4 is unplugged from the socket 1, the female terminal on the plug 4 is located inside the second insulating housing 41, and it is also not easy to cause the risk of electric shock.

[0053] See also Figures 1 to 3 , Fig.11As a specific embodiment of the vehicle-end power connector provided by the present invention, a mating installation surface 44 connected to the inner wall of the first insulating shell 11 is provided on the outer wall of the second insulating shell 41, and a sealing ring 45 is provided on the mating installation surface 44; when the operating plug 4 enters the inside of the connection block 21 and docks with the first terminal 12 on the socket 1, the second insulating shell 41 of the plug 4 enters the inside of the first insulating shell 11 of the socket 1, so that the first terminal 12 is connected to the second terminal 42. In order to improve the connection effect between the first insulating shell 11 and the second insulating shell 41, and to be waterproof and dustproof, a mating installation surface 44 is processed on a section of the outer wall where the second terminal 42 enters the first terminal 12, and a sealing ring 45 is installed on the mating installation surface 44, and the sealing ring 45 is used between the inner wall of the first insulating shell 11 and the mating installation surface 44 to achieve a sealed connection between the plug 4 and the socket 1. A sealing groove can be processed on the mating installation surface 44, and the sealing ring 45 is installed in the sealing groove.

[0054] See also Figures 1 to 3 , Fig.11 As a specific embodiment of the vehicle-end power connector provided by the present invention, the first insulating shell 11 and the second insulating shell 41 are both made of rubber material, and the first insulating shell 11 and the first terminal 12 are injection molded into an integral structure, and the second insulating shell 41 and the second terminal 42 are injection molded into an integral structure; the rubber material used for the first insulating shell 11 and the second insulating shell 41 has the characteristics of wear resistance, aging resistance, water resistance, high insulation, etc., to ensure that the first insulating shell 11 and the second insulating shell 41 can work safely and reliably. At the same time, after the male terminal and the cable 17 or the female terminal and the cable 17 are crimped, the rubber material is used for injection molding and plastic sealing operations to form a socket 1 or plug 4 with an integral structure. This structure is not fixed by any fasteners, and does not need to be separately set with a sealing ring.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle-end power connector, characterized in that, it includes a socket, a connection component, a safety component and a plug: The socket includes a first insulating housing and a first terminal installed in the first insulating housing. A connection hole is provided on the first insulating housing. The first insulating housing is installed on the vehicle body wall, and one end is located outside the carriage wall; The connection component includes a connection block, an elastic positioning member and a cover plate. A through installation channel is provided in the connection block, and a fixing portion for fixedly connecting to the vehicle body wall is provided at one end; the cover plate is hinged to the other end of the connection block; the elastic positioning member is installed at the other end of the connection block and communicates with the installation channel; One end of the first insulating housing and the first terminal enter the installation channel; The safety component includes a rotating ring and an operating part. One end of the rotating ring has a rotating hole and an avoidance groove. The rotating ring is rotatably connected in the installation channel, and a positioning groove connected to the elastic positioning member is provided on the outer circumferential surface of the rotating ring; The plug includes a second insulating housing, a second terminal installed in the second insulating housing and a stop portion installed on the outer side surface of the second insulating housing. The second insulating housing is adapted to the rotating hole, and the stop portion is adapted to the avoidance groove; the second insulating housing and the stop portion pass through the rotating hole and the avoidance groove and enter the installation channel, and the second terminal is electrically connected to the first terminal.

2. The vehicle-end power connector according to claim 1, characterized in that, Two mounting plates extending axially outward are provided at the other end of the connection block. One end of the cover plate is connected to the two mounting plates through a hinge shaft, and a torsion spring is provided on the hinge shaft; a notch groove is provided at the other end of the connection block, and the notch groove is used for installing the operating part.

3. The vehicle-end power connector according to claim 2, characterized in that, A limit protrusion is provided at one end of the cover plate close to the hinge shaft, and a limit groove for cooperating with the limit protrusion is provided on the rotating ring.

4. The vehicle-end power connector according to claim 2, characterized in that, A support protrusion is provided on the cover plate, and the support protrusion is used for supporting on the second insulating housing.

5. The vehicle-end power connector according to claim 1, characterized in that, There are multiple elastic positioning members, which are evenly distributed around the central axis of the installation channel; multiple convex platforms are provided on the outer wall of the connection block, and mounting holes communicating with the installation channel are provided on the convex platforms. The positioning groove is an annular groove. The elastic positioning member includes an elastic member installed in the mounting hole and a positioning bead connected to the elastic member. The positioning bead enters the installation channel and is connected to the annular groove.

6. The vehicle-end power connector according to claim 5, characterized in that, An annular conical surface for entering the installation channel and contacting the positioning bead is provided on the rotating ring.

7. The vehicle-end power connector according to claim 1, characterized in that, The fixing part is a flange, and a receiving groove and a clamping groove located on the bottom surface of the receiving groove are provided at one end of the flange close to the carriage wall. An annular flange and a clamping part located on the annular flange are provided on the outer surface of the first insulating shell. The annular flange is installed in the receiving groove, and the clamping part enters into the clamping groove.

8. The vehicle-end power connector according to claim 1, It is characterized in that The first connecting terminal is a male terminal, and the second connecting terminal is a female terminal.

9. The vehicle-end power connector according to claim 8, It is characterized in that A matching installation surface connected to the inner wall of the first insulating shell is provided on the outer wall of the second insulating shell, and a sealing ring is provided on the matching installation surface.

10. The vehicle-end power connector according to claim 1, It is characterized in that The first insulating shell and the second insulating shell are both made of rubber material, and the first insulating shell and the first connecting terminal are injection-molded into an integral structure, and the second insulating shell and the second connecting terminal are injection-molded into an integral structure.

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