A plug connector

Abstract

The present invention discloses a socket connector, which includes a shell, a plug assembly and a bottom cover, wherein the plug assembly is installed in the open end of the shell, an external threaded tube is provided at the bottom of the shell, the external threaded tube is located outside the shell, one end of the external threaded tube is fixedly connected to the shell, and the other end of the external threaded tube is provided with a plurality of clamping strips, the plurality of clamping strips are evenly distributed along the circumferential direction of the external threaded tube, the open end of the bottom cover is detachably connected to the external threaded tube, a through hole is provided at the bottom center of the bottom cover, a limiting tube matching the clamping strip is provided in the bottom cover, and the limiting tube is connected to the through hole. The beneficial effects of the present invention are: the connection between the cable and the connector will not loosen or break, and the connection is stable; it can effectively prevent external dust from entering the connection port, thereby affecting the connection performance of the pin and the external socket; installation and maintenance are convenient and quick.

Description

Technical Field

[0001] The present invention relates to the technical field related to connectors, and in particular to a plug connector. Background Art

[0002] The female terminals in the connectors (such as plugs, etc.) on the electrical equipment can switch the power on and off by cooperating with the male terminals, so that the use of the electrical equipment is not restricted by region, which greatly improves the convenience of use.

[0003] At present, the existing connectors on the market need to be connected to the terminal through the cable to facilitate the connection with the equipment. The equipment will inevitably shake during transportation or operation, which will cause the cable to shake. Over time, the connection between the cable and the connector will become loose, which will affect the connection tightness and wear of the cable, and then affect the transmission circuit signal function of the connector, resulting in the loss of plug-in performance, affecting the transmission of circuit signals, and thus affecting the use of the equipment. Summary of the invention

[0004] The present invention aims to overcome the disadvantage that the connection between the electrical appliance cable and the connector may become loose in the prior art, and provides a plug connector in which the cable connection will not become loose.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A plug connector comprises a shell, a plug assembly and a bottom cover, wherein the plug assembly is installed in the open end of the shell, an externally threaded tube is provided at the bottom of the shell, the externally threaded tube is located outside the shell, one end of the externally threaded tube is fixedly connected to the shell, the other end of the externally threaded tube is provided with a plurality of clamping strips, the plurality of clamping strips are evenly distributed along the circumferential direction of the externally threaded tube, the open end of the bottom cover is detachably connected to the externally threaded tube, a through hole is provided at the bottom center of the bottom cover, a limiting tube matching the clamping strip is provided in the bottom cover, and the limiting tube is connected to the through hole.

[0007] The plug assembly is installed in the open end of the shell, the bottom of the shell is provided with an external threaded tube, the external threaded tube is located outside the shell, one end of the external threaded tube is fixedly connected to the shell, the other end of the external threaded tube is provided with a plurality of clamping strips, the plurality of clamping strips are evenly distributed along the circumferential direction of the external threaded tube, the open end of the bottom cover is detachably connected to the external threaded tube, the bottom center of the bottom cover is provided with a through hole, the bottom cover is provided with a limiting tube matching the clamping strip, the limiting tube is connected to the through hole. The cable first passes through the through hole, then passes through between the plurality of clamping strips to connect with the plug assembly, and finally the bottom cover is tightened with the external threaded tube through the thread, the plurality of clamping strips clamp the outer wall of the cable under the action of the limiting tube, to prevent the end of the cable connected to the connector from shaking or twisting and misaligning, so as to achieve the purpose of preventing the cable connection from loosening.

[0008] Preferably, the clamping strip includes a clamping block and a clamping tooth, wherein the clamping block and the clamping tooth form an L-shaped structure, one end of the clamping block is fixedly connected to the external threaded tube, and the other end of the clamping block is fixedly connected to the clamping tooth, one end of the clamping tooth is fixedly connected to the clamping block and is away from the central axis of the external threaded tube, and the other end of the clamping tooth matches the surface of the cable and is close to the central axis of the external threaded tube, the outer diameter of the circular ring formed by one end of several clamping blocks fixedly connected to the external threaded tube is larger than the outer diameter of the circular ring formed by the other end thereof, and the outer diameter of the circular ring formed by the other end of several clamping blocks is larger than the diameter of the through hole. This design enables the end of the clamping block fixedly connected to the clamping tooth to be restricted by the through hole, so that the clamping tooth can tightly clamp the side wall of the cable, so that the end of the cable connected to the connector will not shake or twist, thereby ensuring the normal wiring of the cable and reducing the risk of failure.

[0009] Preferably, the center of the through hole is located on the central axis of the limiting tube, one end of the limiting tube is fixedly connected to the bottom of the bottom cover, the inner diameter of the end of the limiting tube fixedly connected to the bottom of the bottom cover is the same as the diameter of the through hole, and the inner diameter of the other end of the limiting tube is larger than the outer diameter of the circular ring formed by one end of the several clamping blocks fixedly connected to the external threaded tube. In the process of the bottom cover being matched with the external threaded tube through the thread, the limiting tube has a certain guiding effect on the several clamping blocks on the external threaded tube, so that the clamping teeth on the clamping blocks are constantly approaching the through hole, and constantly approach each other and clamp the cable, which is reasonably designed and easy to assemble.

[0010] Preferably, the plug assembly comprises a protective shell, a protective cover and a mounting seat, one end of the protective shell is provided with a connection port, the other end of the protective shell is detachably connected to the open end of the protective cover, the mounting seat is installed in the protective shell, a plurality of pins are provided on the mounting seat, one end of the pins is detachably connected to the mounting seat, the other end of the pins is located in the connection port, the bottom of the protective cover is provided with a plurality of connection holes corresponding to the pins, the outer wall of the protective shell is provided with a flange edge, the open end of the shell is detachably connected to the flange edge, the protective shell is connected to a cover assembly through the flange edge, the cover assembly is located on one side of the flange edge, the shell is located on the other side corresponding to the flange edge, and the connection port is located in the cover assembly. One end of the pin located in the connection port is convenient for connection with an external socket; the connection hole is convenient for the corresponding phase line in the cable to be connected with the corresponding pin; the cover assembly can effectively prevent external dust from entering the connection port, thereby affecting the connection performance of the pin and the external socket.

[0011] Preferably, one side of the mounting seat is located in the connection port, and the other side of the mounting seat is provided with a plurality of grooves and a plurality of open grooves connected with the grooves, two corresponding side walls of the groove are provided with mounting grooves matching with the pins, the open groove is located on the side of the mounting seat and between the two mounting grooves, one end of the pin is installed in the groove and is provided with a U-shaped groove corresponding to the open groove, a screw is provided in the U-shaped groove, one end of the screw is located in the open groove, and the other end of the screw is threadedly connected with the other side wall of the groove, a socket matching with the other end of the pin is provided at the bottom of the groove, and the other end of the pin passes through the socket and is located in the connection port, and a clamping device is provided at one end of the pin installed in the groove, and the clamping device is located on the side of the U-shaped groove. The clamping device facilitates the detachable connection between the corresponding phase line in the cable and the pin, which is convenient for installation and maintenance; the design of the open groove and the U-shaped groove facilitates the screw to tighten and fix the pin from the side of the mounting seat.

[0012] Preferably, the plug pin includes a plug-in piece and a connecting piece, one end of the plug-in piece passes through the socket and is located in the groove and is provided with a bending surface, the bending surface is in contact with the bottom of the groove, the plug-in piece is fixedly connected to one end of the connecting piece through the bending surface, the U-shaped groove and the clamping device are both located at the other end of the connecting piece, the connecting piece is installed in the installation groove, and the other end of the plug-in piece is located in the connecting port. The end of the plug-in piece located in the connecting port is convenient for plugging with the external socket; the bending surface is in contact with the bottom of the groove, which is conducive to the plug-in piece being able to be smoothly pulled out of the external socket; at the same time, the cooperation of the screw and the U-shaped groove is conducive to the plug-in piece being able to be smoothly inserted into the external socket, so the bending surface and the screw not only play a role in installing and fixing the plug-in piece, but also play a role in limiting the plug-in and pull-out of the plug-in piece.

[0013] Preferably, the clamping device comprises a clamping rod 1 and a clamping rod 2, one end of the clamping rod 1 is connected to the pin shaft through a torsion spring, the other end of the clamping rod 1 is provided with a rectangular hole, one end of the clamping rod 2 is provided with a rotating shaft matching the rectangular hole, the other end of the clamping rod 2 is connected to the pin shaft through a torsion spring, and the clamping rod 1 is located between the clamping rod 2 and the U-shaped groove. The corresponding phase line in the cable is installed in the triangular area formed by the clamping rod 1, the clamping rod 2 and the pin, and is limited by the torsion spring, so that the connection and removal of the cable and the pin are convenient and fast, saving time.

[0014] Preferably, the pin is provided with conductive rubber 1, the conductive rubber 1 is located between the clamping rod 1 and the clamping rod 2, one side of the clamping rod 1 and one side of the clamping rod 2 are close to the conductive rubber 1, the other side of the clamping rod 1 and the other side of the clamping rod 2 are far away from the conductive rubber 1, the side of the clamping rod 1 close to the conductive rubber 1 and the side of the clamping rod 2 close to the conductive rubber 1 are both provided with conductive rubber 2, and the conductive rubber 1 and the conductive rubber 2 are both provided with a plurality of friction particles evenly distributed. The conductive rubber 1 and the conductive rubber 2 have a conductive function, and the friction particles on the conductive rubber 1 and the conductive rubber 2 help to increase the friction between them and the phase line on the cable line without affecting the conduction between the phase line and the pin, and at the same time, under the action of the torsion spring, the connection between the phase line and the pin is more stable to prevent it from falling off during use.

[0015] Preferably, the cover assembly includes a cover seat and an upper cover matching the cover seat, the cover seat is provided with a mounting port matching the connection port, one side of the cover seat is detachably connected to the upper cover, the upper cover completely covers the connection port, and the other side of the cover seat corresponding to the flange edge is detachably connected. The upper cover completely covers the connection port to effectively prevent external dust from entering the connection port, thereby affecting the connection performance of the pin and the external socket.

[0016] Preferably, one side of the upper cover is rotatably connected to the cover base, and the other side of the upper cover corresponding to the upper cover is snap-connected to the cover base. This design facilitates the opening and closing operation of the upper cover.

[0017] The beneficial effects of the present invention are: the connection between the cable and the connector will not loosen or break, and the connection is stable; it can effectively prevent external dust from entering the connection port and thus affecting the connection performance between the pin and the external socket; installation and maintenance are convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is an exploded view of the present invention;

[0020] Figure 3It is a schematic diagram of the structure of the bottom cover;

[0021] Figure 4 yes Figure 3 Sectional view of AA in the middle;

[0022] Figure 5 yes Figure 1 Left view of;

[0023] Figure 6 yes Figure 5 Cross-sectional view of the middle BB;

[0024] Figure 7 It is a schematic diagram of the structure of the mounting base;

[0025] Figure 8 It is a schematic diagram of the pin structure;

[0026] Fig. 9 yes Figure 8 Bottom view of

[0027] Fig.10 yes Figure 8 Schematic diagram of the structure at A in the middle.

[0028] In the figure: 1. shell, 2. plug assembly, 3. bottom cover, 4. external threaded tube, 5. snap-on strip, 6. through hole, 7. limit tube, 8. snap-on block, 9. snap-on teeth, 10. shell, 11. shield, 12. mounting seat, 13. connection port, 14. pin, 15. connection hole, 16. flange edge, 17. cover body assembly, 18. groove, 19. opening groove, 20. mounting groove, 21. U-shaped groove, 22. screw, 23. mounting port, 24. clamping device, 25. plug-in piece, 26. connecting piece, 27. bending surface, 28. clamping rod 1, 29. clamping rod 2, 30. rectangular hole, 31. rotating shaft, 32. conductive rubber 1, 33. conductive rubber 2, 34. cover seat, 35. upper cover. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1 and Figure 2 In the embodiment described, a plug connector comprises a housing 1, a plug assembly 2 and a bottom cover 3, wherein the plug assembly 2 is installed in the open end of the housing 1, an externally threaded tube 4 is provided at the bottom of the housing 1, the externally threaded tube 4 is located outside the housing 1, one end of the externally threaded tube 4 is fixedly connected to the housing 1, and the other end of the externally threaded tube 4 is provided with a plurality of clamping strips 5, and the plurality of clamping strips 5 are evenly distributed along the circumferential direction of the externally threaded tube 4, the open end of the bottom cover 3 is detachably connected to the externally threaded tube 4, and a through hole 6 is provided at the bottom center of the bottom cover 3, such as Figure 3 and 4As shown, a limiting tube 7 matching the clamping strip 5 is provided in the bottom cover 3 , and the limiting tube 7 is connected to the through hole 6 .

[0031] like Figure 2 , Figure 5 and Figure 6 As shown, the clamping strip 5 includes a clamping block 8 and a clamping tooth 9, the clamping block 8 and the clamping tooth 9 form an L-shaped structure, one end of the clamping block 8 is fixedly connected to the external threaded tube 4, the other end of the clamping block 8 is fixedly connected to the clamping tooth 9, one end of the clamping tooth 9 is fixedly connected to the clamping block 8 and away from the central axis of the external threaded tube 4, the other end of the clamping tooth 9 matches the surface of the cable and is close to the central axis of the external threaded tube 4, the outer diameter of the circular ring formed by one end of several clamping blocks 8 fixedly connected to the external threaded tube 4 is larger than the outer diameter of the circular ring formed by the other end thereof, and the outer diameter of the circular ring formed by the other end of several clamping blocks 8 is larger than the diameter of the through hole 6.

[0032] like Figure 4 and Figure 6 As shown, the center of the through hole 6 is located on the central axis of the limiting tube 7, one end of the limiting tube 7 is fixedly connected to the bottom of the bottom cover 3, the inner diameter of the end of the limiting tube 7 fixedly connected to the bottom of the bottom cover 3 is the same as the diameter of the through hole 6, and the inner diameter of the other end of the limiting tube 7 is larger than the outer diameter of the circular ring formed by one end of a plurality of clamping blocks 8 fixedly connected to the external threaded tube 4.

[0033] like Figure 2 and Figure 6 As shown, the plug assembly 2 includes a protective shell 10, a protective cover 11 and a mounting seat 12. A connecting port 13 is provided at one end of the protective shell 10, and the other end of the protective shell 10 is detachably connected to the open end of the protective cover 11. The mounting seat 12 is installed in the protective shell 10. A plurality of pins 14 are provided on the mounting seat 12. One end of the pins 14 is detachably connected to the mounting seat 12, and the other end of the pins 14 is located in the connecting port 13. A plurality of connecting holes 15 corresponding to the pins 14 are provided at the bottom of the protective cover 11. A flange edge 16 is provided on the outer wall of the protective shell 10, and the open end of the outer shell 1 is detachably connected to the flange edge 16. The protective shell 10 is connected to a cover assembly 17 through the flange edge 16. The cover assembly 17 is located on one side of the flange edge 16, and the outer shell 1 is located on the other side corresponding to the flange edge 16. The connecting port 13 is located in the cover assembly 17.

[0034] like Figure 6 As shown, one side of the mounting seat 12 is located in the connection port 13. Figure 7As shown, the other side of the mounting base 12 is provided with a plurality of grooves 18 and a plurality of open grooves 19 connected with the grooves 18, and two corresponding side walls of the groove 18 are provided with mounting grooves 20 matching with the pin 14, and the open groove 19 is located on the side of the mounting base 12 and between the two mounting grooves 20, one end of the pin 14 is installed in the groove 18 and is provided with a U-shaped groove 21 corresponding to the open groove 19, and a screw 22 is provided in the U-shaped groove 21, one end of the screw 22 is located in the open groove 19, and the other end of the screw 22 is threadedly connected with the other side wall of the groove 18, and a socket matching with the other end of the pin 14 is provided at the bottom of the groove 18, and the other end of the pin 14 passes through the socket and is located in the connecting port 13, as shown in FIG. Figure 8 and Fig. 9 As shown, a clamping device 24 is provided at one end of the pin 14 installed in the groove 18 , and the clamping device 24 is located on the side of the U-shaped groove 21 .

[0035] like Figure 8 and Fig. 9 As shown, the pin 14 includes a plug-in piece 25 and a connecting piece 26. One end of the plug-in piece 25 passes through the plug hole and is located in the groove 18 and is provided with a bending surface 27. The bending surface 27 contacts the bottom of the groove 18. The plug-in piece 25 is fixedly connected to one end of the connecting piece 26 through the bending surface 27. The U-shaped groove 21 and the clamping device 24 are both located at the other end of the connecting piece 26. The connecting piece 26 is installed in the installation groove 20, and the other end of the plug-in piece 25 is located in the connecting port 13.

[0036] like Fig. 9 and Fig.10 As shown, the clamping device 24 includes a clamping rod 1 28 and a clamping rod 29. One end of the clamping rod 1 28 is axially connected to the pin 14 through a torsion spring, and the other end of the clamping rod 1 28 is provided with a rectangular hole 30. One end of the clamping rod 29 is provided with a rotating shaft 31 matching the rectangular hole 30. The other end of the clamping rod 29 is axially connected to the pin 14 through a torsion spring. The clamping rod 1 28 is located between the clamping rod 29 and the U-shaped groove 21.

[0037] like Fig. 9 As shown, the pin 14 is provided with a conductive rubber 1 32, and the conductive rubber 1 32 is located between the clamping rod 1 28 and the clamping rod 29. One side of the clamping rod 1 28 and one side of the clamping rod 29 are both close to the conductive rubber 1 32, and the other side corresponding to the clamping rod 1 28 and the other side corresponding to the clamping rod 29 are both far away from the conductive rubber 1 32. The side of the clamping rod 1 28 close to the conductive rubber 1 32 and the side of the clamping rod 29 close to the conductive rubber 1 32 are both provided with a conductive rubber 2 33, and the conductive rubber 1 32 and the conductive rubber 2 33 are both provided with a plurality of evenly distributed friction particles.

[0038] like Figure 2 and Figure 6As shown, the cover assembly 17 includes a cover seat 34 and an upper cover 35 matching the cover seat 34. The cover seat 34 is provided with a mounting port 23 matching the connection port 13. One side of the cover seat 34 is detachably connected to the upper cover 35. The upper cover 35 completely covers the connection port 13. The other side of the cover seat 34 corresponding to the upper cover 35 is detachably connected to the flange 16. One side of the upper cover 35 is rotatably connected to the cover seat 34, and the other side of the upper cover 35 corresponding to the upper cover 35 is snap-connected to the cover seat 34.

[0039] The cable first passes through the through hole 6, then passes through the center formed by several clamping strips 5 and the corresponding connection holes 15 on the shield 11 in turn, and is connected to the pin 14 through the clamping device 24. Finally, the bottom cover 3 is screwed together with the external threaded tube 4 through the thread. In this process, the limit tube 7 has a certain guiding effect on the several clamping blocks 8 on the external threaded tube 4, so that the clamping teeth 9 on the clamping blocks 8 continuously approach the through hole 6, and continuously approach each other and clamp the cable, preventing the end of the cable connected to the connector from shaking or twisting and misalignment, ensuring the normal wiring of the cable and reducing the risk of failure. The corresponding phase line in the cable is installed in the triangular area formed by the clamping rod 1 28, the clamping rod 29 and the pin 14, and is limited by the torsion spring, so that the connection and disassembly of the cable and the pin 14 are convenient and fast, saving time. The conductive rubber 1 32 and the conductive rubber 2 33 have a conductive function. Without affecting the conduction between the phase line and the plug pin 14, the friction particles on the conductive rubber 1 32 and the conductive rubber 2 33 help to increase the friction between them and the phase line on the cable line. At the same time, under the action of the torsion spring, the connection between the phase line and the plug pin 14 is more stable to prevent it from falling off during use. The upper cover 35 completely covers the connection port 13 to effectively prevent external dust from entering the connection port 13, thereby affecting the connection performance of the plug pin 14 and the external socket.

Claims

1. A plug connector, characterized in that: The invention comprises a shell, a plug assembly and a bottom cover, wherein the plug assembly is installed in the open end of the shell, an external threaded tube is provided at the bottom of the shell, the external threaded tube is located outside the shell, one end of the external threaded tube is fixedly connected to the shell, the other end of the external threaded tube is provided with a plurality of clamping strips, and the plurality of clamping strips are evenly distributed along the circumferential direction of the external threaded tube, the open end of the bottom cover is detachably connected to the external threaded tube, a through hole is provided at the bottom center of the bottom cover, a limiting tube matching the clamping strip is provided in the bottom cover, and the limiting tube is connected to the through hole; the clamping strip comprises a clamping block and a clamping tooth, the clamping block and the clamping tooth form an L-shaped structure, one end of the clamping block is fixedly connected to the external threaded tube, and the other end of the clamping block is fixedly connected to the clamping tooth, One end of the clamping tooth is fixedly connected to the clamping block and is away from the central axis of the external threaded tube, the other end of the clamping tooth matches the surface of the cable and is close to the central axis of the external threaded tube, the outer diameter of the circular ring formed by one end of the several clamping blocks fixedly connected to the external threaded tube is larger than the outer diameter of the circular ring formed by the other end thereof, and the outer diameter of the circular ring formed by the other end of the several clamping blocks is larger than the diameter of the through hole; the center of the through hole is located on the central axis of the limiting tube; the plug assembly comprises a protective shell, a protective cover and a mounting seat, one end of the protective shell is provided with a connecting port, the other end of the protective shell is detachably connected to the open end of the protective cover, the mounting seat is installed in the protective shell, a plurality of pins are provided on the mounting seat, one end of the pin is detachably connected to the mounting seat, the other end of the pin is located in the connecting port, a plurality of connecting holes corresponding to the pins are provided on the bottom of the protective cover, a flange edge is provided on the outer side wall of the protective shell, the open end of the shell is detachably connected to the flange edge The protective shell is connected to a cover body assembly through a flange edge, the cover body assembly is located on one side of the flange edge, the shell is located on the other side corresponding to the flange edge, and the connecting port is located in the cover body assembly; one side of the mounting seat is located in the connecting port, and the other side of the mounting seat is provided with a plurality of grooves and a plurality of open grooves connected to the grooves, two corresponding side walls of the groove are provided with mounting grooves matching the pins, the open groove is located on the side of the mounting seat and between the two mounting grooves, one end of the pin is installed in the groove and is provided with a U-shaped groove corresponding to the open groove, a screw is provided in the U-shaped groove, one end of the screw is located in the open groove, and the other end of the screw is threadedly connected to the other side wall of the groove, a socket matching the other end of the pin is provided at the bottom of the groove, the other end of the pin passes through the socket and is located in the connecting port, and a clamping device is provided at one end of the pin installed in the groove, and the clamping device is located on the side of the U-shaped groove.

2. A plug connector according to claim 1, characterized in that: The plug pin includes a plug-in piece and a connecting piece. One end of the plug-in piece passes through the socket and is located in the groove and is provided with a bending surface. The bending surface contacts the bottom of the groove. The plug-in piece is fixedly connected to one end of the connecting piece through the bending surface. The U-shaped groove and the clamping device are both located at the other end of the connecting piece. The connecting piece is installed in the installation groove, and the other end of the plug-in piece is located in the connecting port.

3. A plug connector according to claim 1 or 2, characterized in that: The clamping device includes a clamping rod 1 and a clamping rod 2, one end of the clamping rod 1 is connected to the pin shaft through a torsion spring, the other end of the clamping rod 1 is provided with a rectangular hole, one end of the clamping rod 2 is provided with a rotating shaft matching the rectangular hole, the other end of the clamping rod 2 is connected to the pin shaft through a torsion spring, and the clamping rod 1 is located between the clamping rod 2 and the U-shaped groove.

4. A plug connector according to claim 3, characterized in that: Conductive rubber 1 is provided on the pin, and the conductive rubber 1 is located between the clamping rod 1 and the clamping rod 2. One side of the clamping rod 1 and one side of the clamping rod 2 are both close to the conductive rubber 1, and the other side corresponding to the clamping rod 1 and the other side corresponding to the clamping rod 2 are both far away from the conductive rubber 1. The side of the clamping rod 1 close to the conductive rubber 1 and the side of the clamping rod 2 close to the conductive rubber 1 are both provided with conductive rubber 2, and a plurality of evenly distributed friction particles are provided on the conductive rubber 1 and the conductive rubber 2.

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