Anti-rotation connector

Abstract

The utility model relates to the field of electric connector discloses a kind of anti-rotation connectors, including the core pipe with the insertion cavity in one end, the core cover inserted in insertion cavity, pipe body and the screw cap rotationally connected on pipe body to screw in core pipe, the limiting structure is arranged between the core pipe and pipe body, the cooperation structure for cooperating with limiting structure and locking core cover is arranged on the core cover.The utility model is by being arranged between the limiting structure of core pipe and jar body, and the cooperation structure that cooperates with each other with limiting structure is arranged on core cover, to make the position between core pipe and core cover be locked, prevent core cover from separating from core pipe, while core cover relative to core pipe and pipe body cannot rotate, to effectively avoid the harm to metal terminal, improve the stability between core cover, core pipe and pipe body simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to an anti-rotation connector. Background Technology

[0002] An electrical connector is a key component used to connect electrical devices. Its core function is to transmit current, signals, or data, ensuring reliable communication and energy exchange between components. It typically consists of a plug, a socket, and internal conductors, establishing a conductive path through tight contacts and using insulating materials to isolate different circuits. Electrical connectors are widely used in electronic equipment, communication systems, industrial machinery, automotive electronics, and aerospace, possessing characteristics such as waterproofing, dustproofing, vibration resistance, and electromagnetic interference resistance to adapt to complex environments.

[0003] Some existing connectors include a core, a tube that is sealed to the core with a nut, and metal terminals housed within the core. Nuts are screwed onto the opposite ends of the core and tube to facilitate connection with complementary structures. For easy installation of the metal terminals, the core typically consists of a core tube and a cap inserted into one end of the core tube. The metal terminal is then attached to the cap, and both the terminal and cap are mounted onto the core tube, which is then screwed in with a nut. However, this process easily leads to rotation of the cap relative to the core tube, the core tube relative to the tube, and the cap relative to the tube. Any rotation of either the core tube or the cap can damage the metal terminals, affecting the normal operation of the connector. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an anti-rotation connector to solve the problem that the core and tube are prone to rotation during connection.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: providing an anti-rotation connector including a core tube with an insertion cavity at one end, a core cover inserted into the insertion cavity, a tube body, and a nut rotatably connected to the tube body and screwed onto the core tube, wherein a limiting structure is provided between the core tube and the tube body, and a mating structure is provided on the core cover for cooperating with the limiting structure to lock the core cover.

[0006] Furthermore, the limiting structure includes a first limiting portion formed in the insertion cavity, and the mating structure includes a first mating portion formed on the core cover. The first mating portion is used to engage with the first limiting portion axially to lock the core cover and prevent the core cover from rotating circumferentially.

[0007] Furthermore, the insertion cavity is open at one end facing the tube body along the axial direction to form an open end; the first limiting part includes a foolproof strip distributed axially from the inner wall of the insertion cavity to the open end; the first mating part includes a foolproof groove opened axially on the outer wall of the core tube for the foolproof strip to pass through axially, the foolproof groove passing through both ends of the core cover axially.

[0008] Furthermore, the limiting structure includes a second limiting portion formed within the insertion cavity, and the mating structure includes a second mating portion formed on the core cover. When the core cover is inserted axially into the insertion cavity, the second mating portion is used to engage with the second limiting portion to lock the core cover and prevent the core cover from moving axially. The second limiting portion has a first limiting surface and a second limiting surface that are sequentially spaced along the axial direction. The second mating portion has a first abutting surface that abuts against the first limiting surface axially after the core cover is installed in place, and a second abutting surface that abuts against the second limiting surface after the core cover is installed.

[0009] Furthermore, the second limiting part includes an arc-shaped block protruding inward from the inner wall of the insertion cavity away from the tube body and a first protrusion protruding inward from the inner wall of the insertion cavity. The first protrusion is located on the side closer to the tube body relative to the arc-shaped block. The end face of the arc-shaped block facing the first protrusion along the axial direction is configured as the first limiting surface, and the side face of the first protrusion facing the arc-shaped block along the axial direction is configured as the second limiting surface. The second mating part includes a second protrusion protruding outward from the outer wall of the core tube. The two end faces of the second protrusion distributed along the axial direction are respectively configured as the first abutment surface and the second abutment surface.

[0010] Furthermore, the second limiting portion also includes a first cavity surface extending axially from the inner side of the first limiting surface and a second cavity surface extending axially from the inner side of the second limiting surface. The first cavity surface protrudes more radially inward relative to the first cavity surface. A guide slope is provided on the side of the first protrusion away from the second limiting surface from the second cavity surface. The second protrusion is distributed in a ring around the outer periphery of the core cover and has an inclined surface adapted to the guide slope. The inclined surface is used to slide and engage with the guide slope to guide the core cover when it moves axially into the insertion cavity. A third protrusion is provided on the outer wall of the second protrusion, which is displaced from the first protrusion. The outer surface of the third protrusion, which is radially distributed, extends axially in a straight line and is configured to fit against the straight surface of the inner wall of the insertion cavity.

[0011] Furthermore, the arc-shaped blocks are configured as a plurality of ones and are spaced apart on the inner wall of the insertion cavity along the circumferential direction. An avoidance space is formed between any two adjacent arc-shaped blocks. The first protrusion is configured as a plurality of ones corresponding to the avoidance space and is respectively distributed in a staggered manner with respect to the avoidance space along the axial direction. The first limiting part and the first protrusion are distributed in a staggered manner along the circumferential direction.

[0012] Furthermore, the limiting structure also includes a third limiting portion formed on the end face of the core cover facing the tube body, and the mating structure also includes a third mating portion formed on the end face of the tube body facing the core cover. The third mating portion is used to engage with the third limiting portion circumferentially to lock the core cover and prevent the core cover from rotating circumferentially. The third limiting portion includes a ring body surrounding the periphery of the core cover, and a plurality of teeth are formed on the ring body. The third mating portion includes a plurality of grooves recessed axially at intervals on the inner peripheral wall of the tube body, and the grooves mesh with the teeth.

[0013] Furthermore, it also includes a metal terminal with a mating end and a mounting end. The core tube has a first insertion cavity axially formed to communicate with the insertion cavity and to allow the mating end to pass through it. The core cover has a second insertion cavity axially formed to be coaxial with the first insertion cavity after the core cover is installed in the insertion cavity and to allow the mounting end to be inserted therein. A protruding ring is formed on the inner wall of the second insertion cavity. The inner side of the protruding ring has a through hole for the mating end to pass through and abut against the mounting end. The mating end has a window and an elastic arm with one end connected to the side of the window and the other end facing outward and inclined towards the mounting end. The elastic arm can deform inward when passing through the through hole and abut against the second insertion cavity and the protruding ring after being installed in the first insertion cavity.

[0014] Furthermore, a hollow waterproof clamp is inserted into the end of the tube away from the nut, and a first nut is screwed onto the tube and surrounds the waterproof clamp. A waterproof sleeve is fitted inside the inner wall of the waterproof clamp; a second nut is screwed onto the end of the core tube away from the tube.

[0015] The anti-rotation connector of this utility model has at least the following beneficial effects: by setting a limiting structure between the core tube and the can body, and setting a matching structure on the core cover that cooperates with the limiting structure, the position between the core tube and the core cover is locked, preventing the core cover from detaching from the core tube, while the core cover cannot rotate relative to the core tube and the can body, thereby effectively avoiding damage to the metal terminals, and improving the stability between the core cover, the core tube and the can body. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the anti-rotation connector of this utility model;

[0018] Figure 2 This is an exploded view of the anti-rotation connector of this utility model;

[0019] Figure 3This is a schematic diagram showing the fit between the core tube and the core cover of this utility model;

[0020] Figure 4 This is a side sectional view of the core tube and core cover of this utility model;

[0021] Figure 5 This is a side sectional view of the core tube of this utility model;

[0022] Figure 6 This is a schematic diagram of the core cover of this utility model;

[0023] Figure 7 This is a side sectional view of the core cover of this utility model;

[0024] Figure 8 This is a schematic diagram of the tank body of this utility model;

[0025] Figure 9 This is a half-sectional schematic diagram of the flip connector of this utility model;

[0026] Figure 10 for Figure 9 An enlarged view of part A shown.

[0027] The meanings of the labels in the attached diagram are as follows:

[0028] Core tube 1, insertion cavity 11, first tube body 12, mating slot 121, second tube body 13, third tube body 14, first insertion cavity 15, first insertion port 151, core cover 2, second insertion cavity 21, protruding ring 22, through hole 221, tube body 3, first end 31, second end 32, side groove 321, connecting ring 33, metal terminal 4, mating end 41, window 42, elastic arm 43, mounting end 44, limiting structure 5, anti-fooling strip 51, second limiting part 52, arc block 521, first limiting surface 5211 522, 5221, 5222, 5222, 523, 524, 525, 525, 53, 531, 6, 6, 6, 61, 62, 621, 622, 623, 624, 6241, 63, 63, 7, 8, 8, 81, 811, 91, 92, 93, 94, 95, 96, 97, 98, 99, 90, 91, 92, 93. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Please see Figure 1 and Figure 2The anti-rotation connector of this utility model includes a core tube 1 with an insertion cavity 11 at one end, a core cover 2 inserted into the insertion cavity 11, a hollow tube body 3, a metal terminal 4 with a mating end 41 and an mounting end 44, a limiting structure 5 disposed between the core tube 1 and the tube body 3, a mating structure 6 disposed on the core cover 2, a nut 7 rotatably connected to the tube body 3 and screwed onto the core tube 1, a hollow waterproof clamp 8 inserted onto the end of the tube body 3 away from the nut 7, a waterproof sleeve 81 innerly fitted on the inner wall of the waterproof clamp 8, a first nut 91 screwed onto the tube body 3 and surrounding the waterproof clamp 8, and a second nut 92 screwed onto the end of the core tube 1 away from the tube body 3. The mating structure 6 and the limiting structure 5 cooperate to lock the core cover 2.

[0031] Please see Figures 3 to 5 The core tube 1 has a cylindrical structure and includes a first tube body 312, a second tube body 313, and a third tube body 314, which are coaxially arranged and sequentially distributed along the axial direction. The second tube body 313 is located between the first tube body 312 and the third tube body 314, and its diameter is larger than that of the first tube body 312 and the third tube body 314. For complementary connecting devices, a matching slot 121 is provided on the outer wall of the first tube body 312. The matching slot 121 extends axially to both ends of the first tube body 312 and passes axially through the end of the first tube body 312 away from the second tube body 313. Multiple matching slots 121 are provided and spaced circumferentially on the outer wall of the first tube body 312 to facilitate interlocking with complementary connecting devices in a mating manner. A first insertion cavity 15 is formed within the first tube body 312, adapted to accommodate the insertion end 41 for insertion 41 to pass through. The first insertion cavity 15 is used for inserting one end of the metal terminal 4. To facilitate the insertion of a complementary connection device into the first insertion cavity 15 and its mating with the metal terminal 4, while limiting the insertion depth of the metal terminal 4, a first socket 151 is formed on the end face of the first tube body 312 away from the second tube body 313, corresponding to the position of the first insertion cavity 15. The diameter of the first socket 151 is smaller than the diameter of the first insertion cavity 15 and the metal terminal 4. The end of the first insertion cavity 15 away from the first socket 151 is connected to the insertion cavity 11, so that the metal terminal 4 can pass through the insertion cavity 11 into the first insertion cavity 15.

[0032] A sealing ring 93 is fitted onto the outer wall of the first tube 312 or the third tube 314, near the end of the second tube 313. A second nut 92 is rotatably fitted onto the third tube 314 and extends toward the first tube 312. The sealing ring 93 is located inside the second nut 92 for sealing. The inner wall of the second nut 92 has internal threads. During connection, by rotating the second nut 92 and screwing it onto the complementary connection device, the second tube 313 blocks the second nut 92, preventing it from moving toward the first tube 312, thus completing the connection between the tube 3 and the complementary connection device.

[0033] The outer wall of the third tube 314 is provided with external threads, and the inner wall of the nut 7 is provided with internal threads that are compatible with the external threads on the outer wall of the third tube 314. The insertion cavity 11 is formed inside the third tube 314 and extends axially through the end face of the third tube 314 away from the first tube 312. The insertion cavity 11 is open at the end facing the tube 3 along the axial direction to form an open end, and the second tube 313 is used to limit the screwing depth of the nut 7.

[0034] Please see Figure 6 and Figure 7 Both the core cover 2 and the insertion cavity 11 are cylindrical and sized to fit together, allowing the core cover 2 to be inserted axially into the insertion cavity 11. A second insertion cavity 21 is axially formed on the core cover 2 at a position corresponding to the first insertion cavity 15, for inserting the mounting end 44. The second insertion cavity 21 extends axially through both ends of the core tube 1. When the core cover 2 is inserted into and aligned within the insertion cavity 11, the second insertion cavity 21 and the first insertion cavity 15 are coaxial and interconnected axially.

[0035] In order to restrict the mounting end 44 within the second insertion cavity 21 after the metal terminal 4 is mounted on the core cover 2, a protruding ring 22 is formed on the inner wall of the cylindrical second insertion cavity 21. The protruding ring 22 is circumferentially protruding along the inner wall of the second insertion cavity 21. The inner side of the protruding ring 22 has a through hole 221 for the mating end 41 to pass through and abut against the mounting end 44. The inner diameter of the through hole 221 is larger than the outer diameter of the mating end 41 and smaller than the outer diameter of the mounting end 44.

[0036] Please see Figure 9 and Figure 10The end of the mating end 41 away from the mounting end 44 has an inner insertion portion for inserting and clamping complementary terminals or cables in the complementary connection device. The mating end 41 of the metal terminal 4 has a window 42 and an elastic arm 43 with one end connected to the side of the window 42 and the other end facing outward and inclined towards the mounting end 44. The elastic arm 43 can be stamped in the sub-window 42, and the end of the elastic arm 43 away from the mounting end 44 is inclined outward along the axial direction from the side near the mating end 41 to the side near the mounting end 44. The elastic arm 43 can deform inward through the window 42 when passing through the through hole 221 and abut against the second insertion cavity 21 and the protruding ring 22 after being installed in the first insertion cavity 15, thereby restricting the movement of the metal terminal 4 toward the tube body 3 in the radial and axial directions. The protruding ring 22 and the first insertion cavity 151 are used to restrict the movement of the metal terminal 4 in the axial direction. An outer convex section with a diameter larger than the inner diameter of the convex ring 22 is formed on the outer wall of the mounting end 44. When the elastic arm 43 abuts against the convex ring 22, the outer convex section abuts against the convex ring 22, thereby restricting the movement of the metal terminal 4 in the entire axial direction. A circumferential portion is formed on the end of the mounting end 44 away from the elastic arm 43, which is used to hold the cable.

[0037] Please see Figures 3 to 8 The limiting structure 5 includes a first limiting part formed in the insertion cavity 11, a second limiting part 52 formed in the insertion cavity 11, and a third limiting part formed on the end face of the core cover 2 facing the tube body 3. The mating structure 6 includes a first mating part formed on the core cover 2, a second mating part formed on the core cover 2, and a third mating part formed on the end face of the tube body 3 facing the core cover 2. When the core cover 2 is inserted axially into the insertion cavity 11, the first mating part and the first limiting part engage axially to lock the core cover 2 and prevent the core cover 2 from rotating circumferentially. The second mating part and the second limiting part 52 engage to lock the core cover 2 and prevent the core cover 2 from moving axially. The third mating part and the third limiting part engage circumferentially to lock the core cover 2 and prevent the core cover 2 from rotating circumferentially.

[0038] The first limiting part includes a foolproof strip 51 that extends axially from the inner wall of the insertion cavity 11 to the open end. The foolproof strip 51 is elongated. The first mating part includes a foolproof groove 61 that is axially formed on the outer wall of the core tube 1 for the foolproof strip 51 to pass through axially. The foolproof groove 61 extends axially through both ends of the core cover 2. When the core cover 2 is installed in the insertion cavity 11, the position of the core cover 2 can be quickly positioned by the foolproof groove 61 and the foolproof strip 51, ensuring that the first insertion cavity 15 and the second insertion cavity 21 can be quickly aligned, so that the foolproof strip 51 can prevent the core cover 2 from being fooled after being inserted into the foolproof groove 61.

[0039] The second limiting part 52 includes an arc-shaped block 521 that protrudes inward from the inner wall of the insertion cavity 11 away from the tube body 3, a first protrusion 522 that protrudes inward from the inner wall of the insertion cavity 11, a first cavity surface 523 that extends axially from the inner side of the first limiting surface 5211, and a second cavity surface 524 that extends axially from the inner side of the second limiting surface 5221. The insertion cavity 11 extends axially to the inner side of the second tube 313 and to the side of the first tube 312 near the second tube 313. Multiple arc-shaped blocks 521 are arranged circumferentially on the inner wall of the insertion cavity 11. A clearance space 525 is formed between any two adjacent arc-shaped blocks 521. Multiple first protrusions 522 are arranged axially corresponding to the clearance spaces 525 and are offset from the arc-shaped blocks 521, respectively, directly opposite the clearance spaces 525. The clearance spaces 525 facilitate the molding and demolding of the first protrusions 522 during the injection molding of the core tube 1. The first protrusions 522 are located near the tube 3 relative to the arc-shaped blocks 521, and each arc-shaped block 521 is formed within the portion of the insertion cavity 11 located between the second tube 313 and the first tube 312. Each arc-shaped block 521 has an axially flush end face facing the first protrusion 522, which is configured as a first limiting surface 5211. The axially facing side of the first protrusion 522 facing the arc-shaped block 521 is configured as a second limiting surface 5221, so that the second limiting portion 52 has first limiting surfaces 5211 and second limiting surfaces 5221 sequentially spaced along the axial direction. The anti-fouling strip 51 of the first limiting portion is circumferentially offset from the first protrusion 522. The radially inward side of the arc-shaped block 521 (i.e., the side of the arc-shaped block 521 facing the insertion cavity 11) is configured as the first cavity surface 523, and the radially inward side of the first protrusion 522 is configured as the second cavity surface 524. The thickness of the arc-shaped block 521 is greater than the thickness of the first protrusion 522, so that the first cavity surface 523 protrudes more radially inward relative to the first cavity surface 524. The first protrusion 522 has a guide slope 5222 on the side of the second cavity surface 524 away from the second limiting surface 5221. The guide slope 5222 is inclined inward on the side closer to the second tube body 313 than on the side closer to the opening, so as to guide the core cover 2.

[0040] The second mating part includes a second protrusion 62 protruding outward from the outer wall of the core tube 1. The second protrusion 62 is annularly protruding around the outer periphery of the core cover 2. The two end faces of the second protrusion 62 along the axial direction are respectively configured as a first abutting surface 621 and a second abutting surface 622. The first abutting surface 621 is used to abut against the first limiting surface 5211 along the axial direction after the core cover 2 is installed in place. The second abutting surface 622 is used to abut against the second limiting surface 5221 after the core cover 2 is installed. The second protrusion 62 is annularly distributed along the outer periphery of the core cover 2 and has an inclined surface 623 adapted to the guide slope 5222. The inclined surface 623 is used to slide and guide the core cover 2 as it moves axially into the insertion cavity 11, while simultaneously having an interference fit with the first protrusion 522 until the second protrusion 62 passes the first protrusion 522 and abuts against the second abutting surface 622. The outer wall of the second protrusion 62 is provided with a third protrusion 624 that is misaligned with the first protrusion 522. The outer side of the third protrusion 624, which is radially distributed, extends straight along the axial direction to be configured to fit against the straight surface 6241 of the inner wall of the insertion cavity 11. The straight surface 6241 can reduce the interference between the second protrusion 62 and the insertion cavity 11.

[0041] The third limiting part includes a ring body 53 surrounding the periphery of the core cover 2. The ring body 53 is arranged in a ring shape on the end face of the core cover 2 facing the tube body 3. The ring body 53 has a plurality of teeth 531 formed thereon. The teeth 531 are isosceles trapezoidal and the side away from the core cover 2 is narrow. The third mating part includes a plurality of grooves 63 recessed along the axial direction on the inner peripheral wall of the tube body 3. The grooves 63 mesh with the teeth 531. During installation, after the teeth 531 and the grooves 63 are meshed along the axial direction, the core cover 2 and the tube body 3 cannot rotate.

[0042] Please see Figure 8 The tube body 3 is a bent tube with two ends. A connecting ring 33 is fixedly fitted on the outer wall of each end of the tube body 3. The two ends of the tube body 3 protrude from the connecting ring 33 and are respectively the first end 31 and the second end 32. A toothed groove 63 is formed on the inner wall of the first end 31. The outer wall of the second end 32 of the tube body 3 has an external thread, and the inner wall of the first nut 91 has an internal thread.

[0043] Please see Figure 2 The nut 7 is rotatably fitted onto the first end 31, and a sealing ring 93 is also fitted onto the outer wall of the first end 31 so that the nut 7 can rotate relative to the tube body 3 so that it can be screwed onto the third tube body 314.

[0044] The waterproof clamp 8 is used to abut against the second end 32 along the axial direction and is hollow inside with axial penetration. Two extension arms 811 are formed on the side of the waterproof clamp 8 facing the second end 32, and a side groove 321 is formed on the outer wall of the second end 32 for the extension arms 811 to be inserted into it along the axial direction. One end of the waterproof sleeve 81 is inserted into the waterproof clamp 8, and the other end is used to fit inside the first nut 91 for its sealing function.

[0045] The working method of one embodiment of the anti-rotation connector of this utility model is as follows: After the cable passes through the first nut 91, waterproof sleeve 81, waterproof clamp 8, tube 3 and nut 7, it is held tightly to the mounting end 44 of the metal terminal 4. The mating end 41 is passed through the core cover 2 and the mounting end 44 is inserted into the second mating cavity 21. The core cover 2 is then inserted into the mating cavity 11, so that the anti-foolproof strip 51 cooperates with the anti-foolproof groove 61 until the first limiting surface 5211 abuts against the first supporting surface 621, the second limiting surface 5221 abuts against the second supporting surface 622, and the mating end 41 is inserted into the first mating cavity 15. The teeth 531 are engaged with the tooth groove 63 along the axial direction. Then, the nut 7 is rotated to connect it to the core tube 1. After that, it is connected to the corresponding complementary connection device to complete the transmission of electrical signals.

Claims

1. A non-rotational connector, comprising a core tube with an insertion cavity at one end, a core cover inserted into the insertion cavity, a tube body, and a nut rotatably connected to the tube body and screwed onto the core tube, characterized in that: A limiting structure is provided between the core tube and the tube body, and a mating structure is provided on the core cover for locking the core cover in conjunction with the limiting structure.

2. The anti-rotation connector as described in claim 1, characterized in that: The limiting structure includes a first limiting portion formed in the insertion cavity, and the mating structure includes a first mating portion formed on the core cover. The first mating portion is used to engage with the first limiting portion axially to lock the core cover and prevent the core cover from rotating circumferentially.

3. The anti-rotation connector as described in claim 2, characterized in that: The insertion cavity is open at one end facing the tube body along the axial direction, forming an open end. The first limiting part includes a foolproof strip that extends axially from the inner wall of the insertion cavity to the open end; The first mating part includes an anti-misbehavior groove formed axially on the outer wall of the core tube for the anti-misbehavior strip to pass through axially therein, the anti-misbehavior groove extending axially through both ends of the core cover.

4. The anti-rotation connector as described in claim 1, characterized in that: The limiting structure includes a second limiting part formed in the insertion cavity, and the mating structure includes a second mating part formed on the core cover. When the core cover is inserted into the insertion cavity along the axial direction, the second mating part is used to cooperate with the second limiting part to lock the core cover to prevent the core cover from moving along the axial direction. The second limiting part has a first limiting surface and a second limiting surface that are sequentially spaced along the axial direction; The second mating part has a first abutting surface for abutting against the first limiting surface axially after the core cover is installed in place, and a second abutting surface for abutting against the second limiting surface after the core cover is installed.

5. The anti-rotation connector as described in claim 4, characterized in that: The second limiting part includes an arc-shaped block protruding inward from the inner wall of the insertion cavity away from the tube body and a first protrusion protruding inward from the inner wall of the insertion cavity. The first protrusion is located on the side closer to the tube body relative to the arc-shaped block. The end face of the arc-shaped block facing the first protrusion along the axial direction is configured as the first limiting surface, and the side face of the first protrusion facing the arc-shaped block along the axial direction is configured as the second limiting surface. The second mating part includes a second protrusion protruding outward from the outer wall of the core tube, and the two end faces of the second protrusion distributed along the axial direction are respectively configured as the first abutting surface and the second abutting surface.

6. The anti-rotation connector as described in claim 4, characterized in that: The second limiting portion also includes a first cavity surface extending axially from the inner side of the first limiting surface and a second cavity surface extending axially from the inner side of the second limiting surface, wherein the first cavity surface convexes more inwardly relative to the first cavity surface in the radial direction. The first protrusion has a guide slope on the side away from the second cavity surface from the second limiting surface; The second protrusion is distributed in a ring around the outer periphery of the core cover and has an inclined surface adapted to the guide slope. The inclined surface is used to slide and engage with the guide slope to guide the core cover as it moves axially into the insertion cavity. The outer wall of the second protrusion is provided with a third protrusion that is offset from the first protrusion. The outer surface of the third protrusion, which is radially distributed, extends straight along the axial direction to be configured to fit against the straight surface of the inner wall of the insertion cavity.

7. The anti-rotation connector as described in claim 5, characterized in that: The arc-shaped blocks are configured as a plurality of them and are spaced apart on the inner wall of the insertion cavity along the circumferential direction. An avoidance space is formed between any two adjacent arc-shaped blocks. The first protrusion is configured as a plurality of them corresponding to the avoidance space and is respectively distributed in a staggered manner with respect to the avoidance space along the axial direction. The first limiting part and the first protrusion are misaligned along the circumferential direction.

8. The anti-rotation connector as described in any one of claims 2 to 7, characterized in that: The limiting structure further includes a third limiting part formed on the end face of the core cover facing the tube body, and the mating structure further includes a third mating part formed on the end face of the tube body facing the core cover. The third mating part is used to engage with the third limiting part in the circumferential direction to lock the core cover and prevent the core cover from rotating in the circumferential direction. The third limiting part includes a ring body disposed around the periphery of the core cover, and the ring body has a plurality of teeth formed thereon. The third mating part includes a plurality of grooves recessed along the axial direction on the inner peripheral wall of the tube, and the grooves mesh with the teeth.

9. The anti-rotation connector as described in claim 1, characterized in that: It also includes a metal terminal with a mating end and an mounting end. The core tube has a first insertion cavity that is axially connected to the insertion cavity and allows the mating end to pass through it. The core cover has a second insertion cavity that is axially connected to the first insertion cavity after the core cover is installed in the insertion cavity and allows the mounting end to be inserted therein. A protruding ring is formed on the inner wall of the second insertion cavity. The inner side of the protruding ring has a through hole for the mating end to pass through and abut against the mounting end. The mating end has a window and an elastic arm with one end connected to the side of the window and the other end facing outward and inclined towards the mounting end. The elastic arm can deform inward when passing through the through hole and abut against the second insertion cavity and the protruding ring after being installed in the first insertion cavity.

10. The anti-rotation connector as described in claim 1, characterized in that: The tube body has a hollow waterproof clamp inserted at the end away from the nut, and a first nut screwed onto the tube body and surrounding the waterproof clamp. The inner wall of the waterproof clamp is fitted with a waterproof sleeve. A second nut is screwed onto the end of the core tube furthest from the tube body.

Images