Anti-interference miniature rectangular connector

Abstract

The invention belongs to the technical field of connectors, and particularly relates to an anti-interference miniature rectangular connector which comprises a plug shell, a socket shell is arranged on one side of the plug shell, transmission lines are fixedly connected to the outer wall of the plug shell and the outer wall of the socket shell, the plug shell is provided with a first shielding protection mechanism, and the first shielding protection mechanism is provided with a second shielding protection mechanism. A second shielding protection mechanism is arranged on the inner wall of the socket shell, and a plugging positioning mechanism is arranged between the plug shell and the socket shell. In the invention, the metal shielding sleeves on the outer walls of the signal pins in the first shielding protection mechanism can effectively isolate signal crosstalk between the pins, the second shielding cover and the plug shell as well as the first shielding cover and the socket shell form double shell shielding, and the conductive sealing rings on the butt joint surfaces of the second shielding cover and the socket shell ensure shielding continuity; a folding shielding cover of the external shielding mechanism is fixed through a connecting bolt and then further blocks external electromagnetic radiation, and meanwhile, a grounding wire and a grounding terminal efficiently guide interference current captured by each shielding assembly into the ground.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more particularly to an anti-interference miniature rectangular connector. Background Art

[0002] Miniature rectangular connectors are widely used in aerospace, military equipment, and precision electronics, primarily for signal transmission between circuits. As electronic devices become increasingly higher-frequency and more integrated, the requirements for connector anti-interference performance are rising. Connectors, also known as plugs or inserts, generally refer to electrical connectors in China, which are devices that connect two active devices for transmitting current or signals.

[0003] Existing anti-interference miniature rectangular connectors are often affected by the external environment during use, causing the connector signal to be interrupted briefly, thus affecting the normal operation of the connector. At the same time, the connector does not have certain anti-loosening characteristics during the connection process, which leads to disconnection due to external influences during use. To address this issue, an anti-interference miniature rectangular connector is proposed. Summary of the Invention

[0004] Existing anti-interference miniature rectangular connectors are often affected by the external environment during use, causing brief interruptions in the connector signal and affecting the normal operation of the connector. At the same time, the connectors do not have certain anti-loosening characteristics during the connection process, resulting in disconnection problems due to external influences during use. Therefore, this invention proposes an anti-interference miniature rectangular connector.

[0005] This invention proposes an anti-interference miniature rectangular connector, comprising a plug housing, a socket housing on one side of the plug housing, and a transmission line fixedly connected to the outer walls of the plug housing and the socket housing. The plug housing is characterized by having a first shielding protection mechanism, a second shielding protection mechanism on the inner wall of the socket housing, a plugging positioning mechanism between the plug housing and the socket housing, and the outer walls of the plug housing and the socket housing respectively forming a second frame and a first frame, the first frame and the second frame having identical structures. Buffer protection mechanisms are provided between the first frame and the socket housing and the plug housing, respectively. An external shielding mechanism is provided on the outer wall of the first frame, and a locking and reinforcing mechanism is provided between the first frame and the second frame.

[0006] Preferably, the first shielding protection mechanism includes a second insulating base and a second shielding cover. The second insulating base is fixedly connected to the plug housing. Multiple signal pins pass through the second insulating base. The outer wall of the signal pins is wrapped with a metal shielding sleeve. The second shielding cover is fixedly connected to the outside of the plug housing.

[0007] Preferably, the second shielding protection mechanism includes a first insulating base and a first shielding cover. The first insulating base is fixedly connected to the inner wall of the socket housing. The first insulating base has multiple sockets adapted to signal pins. Conductive contact pieces are fixedly connected to the inner wall of the sockets. The conductive contact pieces are in contact with the signal pins. A conductive sealing ring is provided on the mating surface of the first shielding cover and the second shielding cover.

[0008] Preferably, the plug-in positioning mechanism includes positioning posts and elastic rubber rings. The positioning posts are fixedly connected to the four corners of the outer wall of one end of the socket housing, the elastic rubber rings are fixedly connected to the positioning posts, and positioning holes adapted to the positioning posts are opened at the four corners of the outer wall of one end of the plug housing.

[0009] Preferably, the top and bottom of the plug housing and the socket housing are fixedly connected with screws, and the top and bottom of the plug housing and the socket housing are provided with movable plates. The screws pass through the movable plates, and the outer wall of the screws is threaded with limit nuts.

[0010] Preferably, the buffer protection mechanism includes a first spring and a first damper, a connecting plate is provided on the top of the movable plate, and the two ends of the first spring and the first damper are fixedly connected to the connecting plate and the movable plate, respectively.

[0011] Preferably, the inner wall of the frame is provided with movable grooves at the top and bottom, and movable blocks are slidably connected to the inner wall of the movable grooves. A second spring and a second damper are fixedly connected between the movable blocks and the movable grooves.

[0012] Preferably, the external shielding mechanism includes a movable frame and connecting bolts. A folding shield is fixedly connected to the outer wall of the first frame. The folding shield is fixedly connected to the movable frame. The connecting bolts are threadedly connected to the four corners of the outer wall of the movable frame, and the connecting bolts are threadedly connected to the second frame.

[0013] Preferably, the locking and reinforcing mechanism includes a locking block and a locking block. A second threaded rod is threadedly connected to the first frame. The locking block is rotatably connected to the second threaded rod. The locking block has a locking groove. A first threaded rod is threadedly connected to the second frame. The locking block is rotatably connected to the first threaded rod. A threaded groove is provided on the outer wall of the locking block. The locking block is detachably connected to the locking block by means of the threaded groove.

[0014] Preferably, both the socket housing and the plug housing are fixedly connected to a grounding wire on their outer walls, and the outer walls of the first shield and the second shield are respectively welded and fixed with grounding terminals. The grounding terminals are made of brass and tin-plated on the surface to ensure conductivity, and the grounding terminals are fixedly connected to the grounding wire.

[0015] Compared with the prior art, the present invention provides an anti-interference miniature rectangular connector, which has the following beneficial effects:

[0016] 1. This anti-interference miniature rectangular connector features a first shielding mechanism where the metal shielding sleeve on the outer wall of the signal pins effectively isolates signal crosstalk between pins. The second shielding cover and the plug housing, as well as the first shielding cover and the socket housing, form a double-shell shielding. The conductive sealing rings on the mating surfaces of the two ensure shielding continuity. The folded shielding cover of the external shielding mechanism, fixed by connecting bolts, further blocks external electromagnetic radiation. Simultaneously, the grounding wire and grounding terminal efficiently conduct the interference current captured by each shielding component to the ground, forming a collaborative system of three layers of shielding and grounding loops: "pin level - housing level - external level." This significantly reduces the impact of electromagnetic interference on signal transmission and ensures the stability and accuracy of high-frequency signal transmission.

[0017] 2. This anti-interference miniature rectangular connector absorbs axial vibration energy through a first spring and a first damper between the movable plate and the connecting plate in the buffer protection mechanism. The second spring and the second damper between the movable block and the groove wall in the inner wall of the frame can buffer radial vibration. The elastic rubber ring on the outer wall of the positioning post provides elastic buffering during insertion to avoid hard impact. The multiple buffer structures work together to significantly attenuate the impact of external vibration on the contact parts of the internal signal pins and the conductive contacts of the socket, prevent poor contact or signal interruption caused by vibration, and improve the working stability of the connector in a vibration environment.

[0018] 3. This anti-interference miniature rectangular connector achieves precise docking of the plug housing and socket housing by setting a positioning post and positioning hole in the insertion positioning mechanism, avoiding insertion misalignment that affects signal transmission. In the locking and reinforcement mechanism, the locking block is pushed in by the first threaded screw and connected to the locking block by the threaded groove. With the adjustment of the second threaded screw, a tight lock is achieved. When the external connecting bolts fix the moving frame, the overall connection strength is further enhanced. The limit nut fixes the movable plate by the screw, which strengthens the connection between the buffer mechanism and the frame. The multiple positioning and locking design effectively prevents the connector from loosening or breaking due to external force or vibration during use, ensuring a long-term stable connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of an anti-interference miniature rectangular connector proposed in this invention;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a side view of an anti-interference miniature rectangular connector proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the front structure of the socket housing of an anti-interference miniature rectangular connector proposed in this invention;

[0023] Figure 5 This is a schematic diagram of the front structure of the plug housing of an anti-interference miniature rectangular connector proposed in this invention;

[0024] Figure 6 This is a schematic diagram of the first frame main structure of an anti-interference miniature rectangular connector proposed in this invention;

[0025] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0026] Figure 8 This is a schematic diagram of the main structure of the locking and reinforcement mechanism for an anti-interference miniature rectangular connector proposed in this invention.

[0027] In the diagram: 1. Plug housing, 2. Socket housing, 3. First frame, 4. Grounding wire, 5. Transmission line, 6. Second frame, 7. First shielding cover, 8. Conductive sealing ring, 9. First insulating base, 10. Socket, 11. Positioning post, 12. Elastic rubber ring, 13. Positioning hole, 14. Metal shielding sleeve, 15. Signal pin, 16. Second shielding cover, 17. Second insulating base, 18. Conductive contact piece, 19. Limiting nut, 20. Movable plate, 21. Screw, 22. Connecting bolt, 23. Moving frame, 24. Folding shielding cover, 25. First damper, 26. Connecting plate, 27. Movable block, 28. Second damper, 29. Second spring, 30. Movable groove, 31. First spring, 32. Threaded groove, 33. Locking block, 34. First threaded rod, 35. Locking block, 36. Second threaded rod, 37. Locking groove. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figure 1-8An anti-interference miniature rectangular connector includes a plug housing 1, a socket housing 2 on one side of the plug housing 1, a transmission line 5 fixedly connected to the outer walls of the plug housing 1 and the socket housing 2, a first shielding protection mechanism on the plug housing 1, a second shielding protection mechanism on the inner wall of the socket housing 2, a plug-in positioning mechanism between the plug housing 1 and the socket housing 2, a second frame 6 and a first frame 3 respectively on the outer walls of the plug housing 1 and the socket housing 2, the first frame 3 and the second frame 6 having the same structure, buffer protection mechanisms between the first frame 3 and the second frame 6 and the socket housing 2 and the plug housing 1 respectively, an external shielding mechanism on the outer wall of the first frame 3, and a connection between the first frame 3 and the second frame 6. Equipped with a locking and reinforcement mechanism, the metal shielding sleeve 14 on the outer wall of the signal pin 15 in the first shielding protection mechanism can effectively isolate signal crosstalk between pins. The second shielding cover 16 and the plug housing 1, and the first shielding cover 7 and the socket housing 2 form a double-shell shield. The conductive sealing ring 8 on the mating surface of the two ensures the continuity of shielding. The folded shielding cover 24 of the external shielding mechanism is fixed by the connecting bolt 22 to further block external electromagnetic radiation. At the same time, the grounding wire 4 and the grounding terminal efficiently conduct the interference current captured by each shielding component to the ground, forming a collaborative system of three-layer shielding and grounding circuit of "pin level - housing level - external level", which greatly reduces the impact of electromagnetic interference on signal transmission and ensures the stability and accuracy of high-frequency signal transmission.

[0030] In this invention, the first shielding protection mechanism includes a second insulating base 17 and a second shielding cover 16. The second insulating base 17 is fixedly connected to the plug housing 1. Multiple signal pins 15 pass through the second insulating base 17. The outer wall of the signal pins 15 is wrapped with a metal shielding sleeve 14. The second shielding cover 16 is fixedly connected to the outer side of the plug housing 1. The second shielding protection mechanism includes a first insulating base 9 and a first shielding cover 7. The inner wall of the socket housing 2 is fixedly connected to the first insulating base 9. The first insulating base 9 has multiple socket holes 10 adapted to the signal pins 15. The inner wall of the socket holes 10 is fixedly connected to a conductive contact piece 18. The conductive contact piece 18 is in contact with the signal pins 15. The mating surface of the first shielding cover 7 and the second shielding cover 16 is provided with a conductive sealing ring 8. The metal shielding sleeve 14 on the outer wall of the signal pins 15 in the first shielding protection mechanism can effectively isolate signal crosstalk between the pins. The second shielding cover 16 and the plug housing 1, and the first shielding cover 7 and the socket housing 2 form a double shell shield. The conductive sealing ring 8 on the mating surface of the two ensures the continuity of the shield.

[0031] The insertion positioning mechanism includes a positioning post 11 and an elastic rubber ring 12. The positioning post 11 is fixedly connected to the four corners of the outer wall of one end of the socket housing 2. The elastic rubber ring 12 is fixedly connected to the positioning post 11. Positioning holes 13 adapted to the positioning post 11 are opened at the four corners of the outer wall of one end of the plug housing 1. By setting the positioning post 11 and the positioning hole 13 of the insertion positioning mechanism to cooperate, the plug housing 1 and the socket housing 2 can be accurately connected, avoiding insertion offset from affecting signal transmission.

[0032] Both the top and bottom of the plug housing 1 and the socket housing 2 are fixedly connected with screws 21. Both the top and bottom of the plug housing 1 and the socket housing 2 are provided with movable plates 20. The screws 21 pass through the movable plates 20. The outer wall of the screws 21 is threaded with limit nuts 19. The fixation of the limit nuts 19 to the movable plates 20 by the screws 21 strengthens the connection between the buffer mechanism and the frame.

[0033] The buffer protection mechanism includes a first spring 31 and a first damper 25. A connecting plate 26 is provided on the top of the movable plate 20. The first spring 31 and the first damper 25 are fixedly connected to the connecting plate 26 and the movable plate 20 at their respective ends. Movable grooves 30 are provided at the top and bottom of the inner wall of the frame. Movable blocks 27 are slidably connected to the inner wall of the movable grooves 30. A second spring 29 and a second damper 28 are fixedly connected between the movable blocks 27 and the movable grooves 30. By setting the first spring 31 and the first damper 25 between the movable plate 20 and the connecting plate 26 in the buffer protection mechanism, axial vibration energy can be absorbed. The second spring 29 and the second damper 28 between the movable block 27 and the groove wall in the movable grooves 30 of the inner wall of the frame can buffer radial vibration.

[0034] The external shielding mechanism includes a movable frame 23 and connecting bolts 22. A folded shielding cover 24 is fixedly connected to the outer wall of the first frame 3. The folded shielding cover 24 is fixedly connected to the movable frame 23. The connecting bolts 22 are threadedly connected to the four corners of the outer wall of the movable frame 23. The connecting bolts 22 are threadedly connected to the second frame 6. The folded shielding cover 24 of the external shielding mechanism further blocks external electromagnetic radiation after being fixed by the connecting bolts 22.

[0035] The locking and reinforcing mechanism includes a locking block 35 and a locking block 33. The first frame 3 is threadedly connected to a second threaded rod 36. The locking block 35 is rotatably connected to the second threaded rod 36. The locking block 35 has a locking groove 37. The second frame 6 is threadedly connected to a first threaded rod 34. The locking block 33 is rotatably connected to the first threaded rod 34. The outer wall of the locking block 33 has a threaded groove 32. The locking block 33 is detachably connected to the locking block 35 by means of the threaded groove 32. In the locking and reinforcing mechanism, the locking block 33 is pushed in by the first threaded rod 34 and threadedly connected to the locking block 35 by means of the threaded groove 32. With the adjustment of the second threaded rod 36, a tight locking is achieved. When the external connecting bolt 22 fixes the moving frame 23, the overall connection strength is further enhanced.

[0036] Both the socket housing 2 and the plug housing 1 have a grounding wire 4 fixedly connected to their outer walls. The outer walls of the first shielding cover 7 and the second shielding cover 16 are respectively welded and fixed with grounding terminals. The grounding terminals are made of brass and tin-plated to ensure conductivity. The grounding terminals are fixedly connected to the grounding wire 4. The grounding wire 4 and the grounding terminals efficiently conduct the interference current captured by each shielding component to the ground, forming a collaborative system of three layers of shielding and grounding loops: "pin level - housing level - external level". This significantly reduces the impact of electromagnetic interference on signal transmission and ensures the stability and accuracy of high-frequency signal transmission.

[0037] In use, when the connector is working, first align the plug housing 1 with the socket housing 2, so that the positioning pin 11 with the elastic rubber ring 12 is inserted into the positioning hole 13 to complete the pre-positioning. The signal pin 15 is then inserted into the socket 10 and contacts the conductive contact 18. The metal shielding sleeve 14 is simultaneously connected to form pin-level shielding. Rotate the first threaded screw 34 and the second threaded screw 36 to push the locking block 33 and the locking block 35 to be threadedly connected through the threaded groove 32 and the slot 37 to achieve locking. At the same time, use the connecting bolt 22 to fix the moving frame 23 to the second frame 6, so that the folding shielding cover 24 unfolds to cover the outside. The first shielding cover 7 and the second shielding cover 16 are closed by the conductive sealing ring 8 to form the shell shielding. The grounding wire 4 conducts the interference current to the ground through the grounding terminal. When there is external vibration, the first spring 31, the first damper 25, the second spring 29, and the second damper 28 buffer the vibration through the movable plate 20 and the movable block 27. The limit nut 19 ensures the stability of the buffering mechanism through the screw 21, so as to achieve stable signal transmission.

[0038] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An anti-interference miniature rectangular connector, comprising a plug housing (1), a socket housing (2) disposed on one side of the plug housing (1), and a transmission line (5) fixedly connected to the outer walls of the plug housing (1) and the socket housing (2), characterized in that, The plug housing (1) is provided with a first shielding protection mechanism, the inner wall of the socket housing (2) is provided with a second shielding protection mechanism, a plug-in positioning mechanism is provided between the plug housing (1) and the socket housing (2), the outer walls of the plug housing (1) and the socket housing (2) are respectively provided with a second frame (6) and a first frame (3), the first frame (3) and the second frame (6) have the same structure, the first frame (3) and the second frame (6) are respectively provided with a buffer protection mechanism between the first frame (3) and the socket housing (2) and the plug housing (1), the outer wall of the first frame (3) is provided with an external shielding mechanism, and a locking and reinforcing mechanism is provided between the first frame (3) and the second frame (6).

2. The connector according to claim 1, characterized in that, The first shielding protection mechanism includes a second insulating base (17) and a second shielding cover (16). The second insulating base (17) is fixedly connected to the plug housing (1). Multiple signal pins (15) pass through the second insulating base (17). The outer wall of the signal pins (15) is wrapped with a metal shielding sleeve (14). The second shielding cover (16) is fixedly connected to the outside of the plug housing (1).

3. The connector according to claim 2, characterized in that, The second shielding protection mechanism includes a first insulating base (9) and a first shielding cover (7). The first insulating base (9) is fixedly connected to the inner wall of the socket housing (2). The first insulating base (9) has multiple sockets (10) adapted to the signal pins (15). The inner wall of the sockets (10) is fixedly connected to a conductive contact (18). The conductive contact (18) is in contact with the signal pins (15). The first shielding cover (7) and the second shielding cover (16) are provided with conductive sealing rings (8).

4. The connector according to claim 1, characterized in that, The plug positioning mechanism includes a positioning post (11) and an elastic rubber ring (12). The positioning post (11) is fixedly connected to the four corners of the outer wall of one end of the socket housing (2). The elastic rubber ring (12) is fixedly connected to the positioning post (11). The four corners of the outer wall of one end of the plug housing (1) are provided with positioning holes (13) that are compatible with the positioning post (11).

5. The connector according to claim 1, characterized in that, The plug housing (1) and socket housing (2) are both fixedly connected to the top and bottom of the screw (21). The plug housing (1) and socket housing (2) are both provided with movable plates (20) at the top and bottom. The screw (21) passes through the movable plate (20). The screw (21) is threaded with a limit nut (19) on its outer wall.

6. The connector according to claim 5, characterized in that, The buffer protection mechanism includes a first spring (31) and a first damper (25). A connecting plate (26) is provided on the top of the movable plate (20). The two ends of the first spring (31) and the first damper (25) are fixedly connected to the connecting plate (26) and the movable plate (20) respectively.

7. The connector according to claim 6, characterized in that, The frame has movable grooves (30) at the top and bottom of its inner wall. Movable blocks (27) are slidably connected to the inner wall of the movable grooves (30). A second spring (29) and a second damper (28) are fixedly connected between the movable blocks (27) and the movable grooves (30).

8. The connector according to claim 1, characterized in that, The external shielding mechanism includes a movable frame (23) and connecting bolts (22). A folding shield (24) is fixedly connected to the outer wall of the first frame (3). The folding shield (24) is fixedly connected to the movable frame (23). The connecting bolts (22) are threadedly connected to the four corners of the outer wall of the movable frame (23) respectively. The connecting bolts (22) are threadedly connected to the second frame (6).

9. The connector according to claim 1, characterized in that, The locking and reinforcing mechanism includes a locking block (35) and a locking block (33). The first frame (3) is threadedly connected to a second threaded rod (36). The locking block (35) is rotatably connected to the second threaded rod (36). The locking block (35) has a locking groove (37). The second frame (6) is threadedly connected to a first threaded rod (34). The locking block (33) is rotatably connected to the first threaded rod (34). The outer wall of the locking block (33) has a threaded groove (32). The locking block (33) is detachably connected to the locking block (35) by means of the threaded groove (32).

10. The connector according to claim 1, characterized in that, The outer walls of the socket housing (2) and the plug housing (1) are both fixedly connected with grounding wires (4). The outer walls of the first shield (7) and the second shield (16) are respectively welded with grounding terminals. The grounding terminals are made of brass and tin-plated on the surface to ensure conductivity. The grounding terminals are fixedly connected to the grounding wires (4).

Images