Integrated electric connector

Abstract

The invention discloses an integrated electric connector, and belongs to the technical field of electric connectors. The electric connector comprises a socket and a plug, the plug comprises a plug shell, a radio frequency plug, an optical fiber plug module and a high-speed single-end plug module are arranged in the plug shell, a locking rod assembly is movably arranged in the plug shell, and the socket comprises a socket shell. A radio frequency socket, an optical fiber socket module and a high-speed single-end socket module are arranged on the socket shell, a locking sleeve assembly is arranged in the socket shell, and after the plug is inserted into the socket, the locking rod assembly is connected with the locking rod assembly, so that the plug and the socket are prevented from falling off. After the plug and the socket are inserted in place, the locking rod is rotated to be connected with the locking sleeve, so that the plug and the socket are firmly and reliably connected, and the plug and the socket are prevented from falling off; the plug and the socket can be locked and fixed together by rotating the locking rod, and the operation is simple, convenient and rapid.

Description

Technical Field

[0001] The invention relates to an integrated electric connector, belonging to the technical field of electric connectors. Background Art

[0002] Most of the existing connectors are single-signal type connectors, that is, one connector can only transmit a single type of signal. This type of connector has the advantages of flexible use and easy selection, but it also has some disadvantages. For example, when multiple signals need to be transmitted between components or systems, different types of connectors need to be installed between the components or systems. Therefore, the total space occupied by the connectors is large and the weight is large; and because the installation heights of the connectors are not uniform, the connectors may not be plugged in synchronously when the components or systems are plugged in; especially when multiple connectors are used, there may be assembly errors in the relative positions of the connectors, resulting in difficulty in plugging in. In severe cases, multiple connectors may be deformed after plugging in, affecting the reliability of signal transmission between components or systems; therefore, in order to meet the increasingly complex and precise connection requirements of hardware components and systems, new connectors must be developed to solve this problem.

[0003] To this end, the Chinese patent document with publication number CN112202020A discloses an ultra-high-speed, high-density, and high-reliability integrated optoelectronic RF connector, including a plug and a socket; the plug includes a plug housing, on which a fiber optic plug module, a high-speed plug module, and a RF plug are fixed; the socket includes a socket housing, on which a fiber optic socket module, a high-speed socket module, and a RF socket are fixed; the plug and the socket cooperate to form an integrated optoelectronic RF connector. Different types of connectors are integrated into the same connector housing, and the structural optimization design greatly reduces the total space and weight occupied by the integrated connector, and the plug and the weight have the advantages of synchronization and reliable signal connection; and the connector housing is designed with a two-stage plug-in guide mechanism to realize the blind plug-in function; at the same time, the connector housing is also designed with a plug-in identification mechanism with an anti-wrong plug-in function, thereby ensuring the increasingly complex and precise connection requirements of hardware components and systems.

[0004] However, after the plug of the connector is plugged into the socket, there is a risk that the plug will be disengaged from the socket, and the connector is not suitable for use in situations where a firm and reliable connection between the plug and the socket is required. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an integrated electrical connector.

[0006] The present invention is achieved through the following technical solutions:

[0007] An integrated electrical connector includes a socket and a plug, wherein the plug includes a plug housing, wherein a radio frequency plug, an optical fiber plug module and a high-speed single-ended plug module are arranged in the plug housing, and a locking rod assembly is movably arranged in the plug housing, wherein the socket includes a socket housing, wherein a radio frequency socket, an optical fiber socket module and a high-speed single-ended socket module are arranged on the socket housing, and a locking sleeve assembly is arranged in the socket housing, and after the plug is plugged into the socket, the locking rod assembly is connected to the locking rod assembly to prevent the plug and the socket from falling off.

[0008] The optical fiber plug module is limitedly installed in the plug housing through the optical mounting plate assembly and the mounting plate A, and the mounting plate A is connected to the plug housing through screws B.

[0009] The optical mounting plate assembly includes an optical mounting plate and an optical pressure plate, the optical mounting plate is provided with a limit hole A, two light guide columns are arranged side by side on the optical mounting plate, and a plane A is milled on the outer circumferential surface of the light guide column, the optical pressure plate is connected to the optical mounting plate by a screw A, and a limit hole B is provided on the optical pressure plate at a position corresponding to the limit hole A, and the size of the limit hole B is smaller than the size of the limit hole A.

[0010] The high-speed single-ended plug module includes a lower base, an upper base and multiple pins. The lower base is provided with multiple circular through holes. One end of the upper base is connected to one end of the lower base, and a flat square hole is provided on the upper base at a position corresponding to the circular through hole. Two shoulders are provided in the middle of the multiple pins, and a plane B is milled on the outer circumferential surface of one of the shoulders. The multiple pins are located in the lower base and the upper base, and one end of the pin passes through the circular through hole to extend outside the lower base, and the other end passes through the flat square hole to extend outside the upper base.

[0011] The locking rod assembly includes a locking ring A, a snap ring, a locking rod sleeve and a locking rod. The locking ring A is fixed in the plug housing. The locking rod sleeve is provided with an external thread which is threadedly connected with the locking ring A. The locking rod sleeve is provided with a snap-in groove along the axial direction. The locking rod is snapped into the locking rod sleeve through the snap-in groove and can be flexibly rotated relative to the locking rod sleeve. The snap ring is sleeved on one end of the locking rod sleeve.

[0012] After the optical fiber socket module is assembled into the socket housing, it is limitedly mounted on the socket housing through an optical mounting plate, and the optical mounting plate is connected to the socket housing through screws.

[0013] The high-speed single-ended socket module includes an insulating plate, a mounting seat and multiple jacks. The insulating plate is fixed in the socket shell by glue filling. The mounting seat is connected to the socket shell by screws. A correction plate and a button mounting plate are provided in the mounting seat. Multiple button assemblies are provided in the button mounting plate. One end of the multiple jacks passes through the insulating plate and is connected to the insulating plate, and the other end passes through the correction plate and is connected to one end of the multiple button assemblies one by one.

[0014] The locking sleeve assembly comprises a locking ring B and a locking sleeve. The locking ring B is fixed in the socket housing. The locking sleeve is provided with an external thread threadedly connected with the locking ring B, and one end of the locking sleeve is provided with an internal thread.

[0015] The locking sleeve assembly also includes a locking sleeve push rod, which is located in the locking sleeve and slidably connected to the locking sleeve. A spring is sleeved on the locking sleeve push rod, one end of the spring abuts against the shoulder surface of the locking sleeve push rod, and the other end abuts against the step surface in the locking sleeve.

[0016] An annular groove A is circumferentially provided on the outer ring surface of the locking sleeve, and a locking sleeve sealing ring is installed in the annular groove A. An annular groove B is circumferentially provided on the middle part of the locking sleeve push rod, and a push rod sealing ring is installed in the annular groove B.

[0017] One end of the plug housing is provided with a tail cover assembly, which includes a right tail cover, a left tail cover, an outlet barrel and a tail cover rod. An outlet barrel boss is provided on the outer circumferential surface of one end of the outlet barrel, and a tail cover semicircular groove and a tail cover groove are correspondingly provided on the right tail cover and the left tail cover, and a tail cover boss is provided on the end of the right tail cover and the left tail cover away from the tail cover groove. After the right tail cover is embraced with the left tail cover, the outlet barrel boss is clamped in the tail cover semicircular groove, and the tail cover grooves on the right tail cover and the left tail cover are connected by a U-shaped tail cover rod block, and one end of the tail cover rod passes through the U-shaped tail cover rod block and is connected to the plug housing.

[0018] The beneficial effects of the present invention are:

[0019] 1. Integrate RF signal transmission, optical signal transmission, high-speed signal and single-ended signal transmission into the same electrical connector to meet the requirements of high integration of electrical connectors, diverse signal transmission, miniaturization and environmental resistance.

[0020] 2. After the plug and the socket are inserted into place, the rotating locking rod is connected to the locking sleeve, so that the plug and the socket are firmly and reliably connected, and the plug and the socket are prevented from falling off; the rotating locking rod can lock the plug and the socket together, which is simple, convenient and fast to operate.

[0021] 3. When the locking sleeve is threadedly connected with the locking rod, the locking rod overcomes the force of the spring and pushes the locking sleeve push rod to move axially. At the same time, the spring gives a certain reaction force to the end face of the locking rod through the locking sleeve push rod, thereby preventing the locking rod from rotating after the locking sleeve is threadedly connected and locked, further improving the reliability of the integrated electrical connector plug and socket anti-detachment.

[0022] 4. Multiple wool button components are installed in the high-speed single-ended socket module to facilitate connection with the printed circuit board to reduce the cable length of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the exploded structure of the plug of the present invention;

[0024] Figure 2 A front view of the plug of the present invention;

[0025] Figure 3 for Figure 2 A top view of

[0026] Figure 4 for Figure 2 Left view of

[0027] Figure 5 for Figure 2 Bottom view of

[0028] Figure 6 It is a schematic diagram of the exploded structure of the tail cover assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the exploded structure of the high-speed single-ended plug module of the present invention;

[0030] Figure 8 It is a schematic diagram of the exploded structure of the optical mounting plate assembly of the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure of the locking rod assembly of the present invention after the locking ring A is removed;

[0032] Fig.10 for Fig. 9 Schematic diagram of the explosion structure;

[0033] Fig.11 It is a schematic diagram of the exploded structure of the socket of the present invention;

[0034] Fig.12 It is a schematic diagram of the main structure of the socket of the present invention;

[0035] Fig.13 for Fig.12 A top view of

[0036] Fig.14 for Fig.12 Left view of

[0037] Fig.15 This is a schematic diagram of the structure of the locking sleeve assembly of the present invention after the locking ring B is removed;

[0038] Fig.16 for Fig.15 Schematic diagram of the explosion structure.

[0039] In the figure: 1-tail cover assembly, 100-U-shaped tail cover rod block, 101-tail cover rod, 102-outlet barrel, 103-right tail cover, 104-outlet barrel boss, 105-tail cover groove, 106-left tail cover, 107-tail cover semicircular groove, 108-tail cover boss, 2-RF plug, 3-locking ring A, 4-optical fiber plug module, 5-high-speed single-ended plug module, 50-lower base, 51-plane B, 52-pin, 53-flat square hole, 54-upper base, 6-optical mounting plate assembly, 60-plane A, 61-light guide column, 62-optical mounting plate, 63-optical pressure plate, 64-screw A, 7-screw B, 8-mounting plate A, 9-mounting plate B, 10-plug housing, 11-locking rod assembly, 110-clamping ring, 111-locking rod sleeve, 112-locking rod, 12-locking ring B, 13-sealing ring, 14-socket housing, 15-insulating plate, 16-correction plate, 17-mounting seat, 18-cover plate, 19-optical mounting plate, 20-wool button assembly, 21-wool button mounting plate, 22-optical fiber socket module, 23-jack, 24-locking sleeve assembly, 240-locking sleeve, 241-locking sleeve sealing ring, 242-push rod sealing ring, 243-spring, 244-locking sleeve push rod, 25-RF socket. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0041] like Figures 1 to 16 As shown, an integrated electrical connector described in the present invention includes a socket and a plug, the plug includes a plug housing 10, a radio frequency plug 2, a fiber optic plug module 4 and a high-speed single-ended plug module 5 are installed in the plug housing 10, and a locking rod assembly 11 is movably provided in the plug housing 10, the socket includes a socket housing 14, a radio frequency socket 25, a fiber optic socket module 22 and a high-speed single-ended socket module are installed on the socket housing 14, and a locking sleeve assembly 24 is installed in the socket housing 14, and after the plug and the socket are plugged in, the locking rod assembly 11 is connected to the locking rod assembly 11 to prevent the plug and the socket from falling off.

[0042] The optical fiber plug module 4 is limitedly installed in the plug housing 10 through the optical mounting plate assembly 6 and the mounting plate A8, and the mounting plate A8 is connected to the plug housing 10 through screws B7;

[0043] The optical mounting plate assembly 6 includes an optical mounting plate 62 and an optical pressure plate 63. A limiting hole A is machined on the optical mounting plate 62. Two light guide columns 61 are mounted side by side on the optical mounting plate 62, and a plane A60 is milled on the outer circumferential surface of the light guide column 61. The optical pressure plate 63 is connected to the optical mounting plate 62 via screws A64, and a limiting hole B is machined on the optical pressure plate 63 at a position corresponding to the limiting hole A, and the size of the limiting hole B is smaller than the size of the limiting hole A. When in use, two guide holes are machined on the socket housing 14 at positions corresponding to the two light guide columns 61, so as to facilitate guidance through the two light guide columns 61 and the two guide holes, so as to achieve fast and accurate alignment and insertion between the plug and the socket. Figure 2 As shown, the size of the limiting hole B is smaller than that of the limiting hole A, so as to form a step surface to limit the upper part of the optical fiber plug module 4.

[0044] The high-speed single-ended plug module 5 includes a lower base 50, an upper base 54 and a plurality of plug pins 52. The lower base 50 is processed with a plurality of circular through holes. One end of the upper base 54 is connected to one end of the lower base 50, and a flat square hole 53 is processed on the upper base 54 at a position corresponding to the circular through hole. Two shaft shoulders are provided in the middle of the plurality of plug pins 52, and a plane B51 is milled on the outer circumferential surface of one of the shaft shoulders. The plurality of plug pins 52 are located in the lower base 50 and the upper base 54, and one end of the plug pin 52 extends to the outside of the lower base 50 through the circular through hole, and the other end extends to the outside of the upper base 54 through the flat square hole 53. When in use, after the lower base 50 and the upper base 54 are connected, they are fixedly installed in the plug housing 10 through the mounting plate B9, and the mounting plate B9 is connected to the plug housing 10 by screws.

[0045] The locking rod assembly 11 includes a locking ring A3, a snap ring 110, a locking rod sleeve 111 and a locking rod 112. The locking ring A3 is fixedly installed in the plug housing 10. The locking rod sleeve 111 is processed with an external thread and is threadedly connected to the locking ring A3. The locking rod sleeve 111 is provided with a snap-in groove along the axial direction. The locking rod 112 is snapped into the locking rod sleeve 111 through the snap-in groove and can be flexibly rotated relative to the locking rod sleeve 111. The snap ring 110 is sleeved on one end of the locking rod sleeve 111. Fig. 9 and Fig.10 As shown, after the locking rod 112 is inserted into the locking rod sleeve 111, the locking rod 112 is limited in radial direction by the inner wall of the locking rod sleeve 111, one axial end of the locking rod 112 is limited by the step surface in the locking rod sleeve 111, and the other axial end of the locking rod 112 is limited by the snap ring 110. The snap ring 110 is axially limited by the shoulder surface of the root of the external thread on the locking rod sleeve 111 and the shoulder on the locking rod 112. After the snap ring 110 is glued to the end of the locking rod sleeve 111, it can prevent the locking rod 112 from falling out of the insertion groove.

[0046] After the optical fiber socket module 22 is installed in the socket housing 14, it is limitedly mounted on the socket housing 14 by the optical mounting plate 19, and the optical mounting plate 19 is connected to the socket housing 14 by screws.

[0047] The high-speed single-ended socket module comprises an insulating plate 15, a mounting seat 17 and a plurality of jacks 23, wherein the insulating plate 15 is fixed in the socket housing 14 by glue injection, the mounting seat 17 is connected to the socket housing 14 by screws, a correction plate 16 and a fur button mounting plate 21 are glue injected in the mounting seat 17, a plurality of fur button assemblies 20 are mounted in the fur button mounting plate 21, one end of the plurality of jacks 23 penetrates the insulating plate 15 and is connected to the insulating plate 15, and the other end penetrates the correction plate 16 and is connected to one end of the plurality of fur button assemblies 20 in a one-to-one correspondence. The fur button assemblies 20 are prior art and will not be described in detail here.

[0048] The locking sleeve assembly 24 includes a locking ring B12 and a locking sleeve 240. The locking ring B12 is fixedly installed in the socket housing 14. The locking sleeve 240 is processed with an external thread to be threadedly connected with the locking ring B12, and one end of the locking sleeve 240 is processed with an internal thread. The internal thread on the locking sleeve 240 is used to connect with the external thread at the end of the locking rod 112, so as to lock and fix the plug and the socket together after being inserted into place.

[0049] The locking sleeve assembly 24 further includes a locking sleeve push rod 244, which is located in the locking sleeve 240 and is slidably connected to the locking sleeve 240. A spring 243 is sleeved on the locking sleeve push rod 244, one end of the spring 243 abuts against the axial shoulder surface of the locking sleeve push rod 244, and the other end abuts against the step surface in the locking sleeve 240. When the locking sleeve 240 is threadedly connected with the locking rod 112, the locking rod 112 overcomes the force of the spring 243 and pushes the locking sleeve push rod 244 to move axially. At the same time, the spring 243 applies a certain reaction force to the end surface of the locking rod 112 through the locking sleeve push rod 244, thereby preventing the locking rod 112 from rotating after being threadedly connected and locked with the locking sleeve 240, further improving the reliability of the anti-detachment of the integrated electrical connector plug and socket.

[0050] The outer ring surface of the locking sleeve 240 is circumferentially processed with an annular groove A, and a locking sleeve sealing ring 241 is installed in the annular groove A. The middle part of the locking sleeve push rod 244 is circumferentially processed with an annular groove B, and a push rod sealing ring 242 is installed in the annular groove B.

[0051] A tail cover assembly 1 is installed at one end of the plug housing 10, and the tail cover assembly 1 includes a right tail cover 103, a left tail cover 106, a wire outlet barrel 102 and a tail cover rod 101. A wire outlet barrel boss 104 is provided on the outer circumferential surface of one end of the wire outlet barrel 102, and a tail cover semicircular groove 107 and a tail cover groove 105 are processed on the right tail cover 103 and the left tail cover 106 respectively, and a tail cover boss 108 is provided on the end of the right tail cover 103 and the left tail cover 106 away from the tail cover groove 105. After the right tail cover 103 and the left tail cover 106 are embraced, the wire outlet barrel boss 104 is stuck in the tail cover semicircular groove 107, and the tail cover groove 105 on the right tail cover 103 and the left tail cover 106 are connected by a U-shaped tail cover rod block 100, and one end of the tail cover rod 101 passes through the U-shaped tail cover rod block 100 and is connected to the plug housing 10.

[0052] Specifically, an annular groove is processed on the socket housing 14, and a sealing ring 13 is installed in the annular groove. The cover plate 18 is connected to the socket housing 14 by screws.

[0053] The integrated electrical connector of the present invention has the following working principle or use process:

[0054] After the plug and the socket are inserted into place, the rotating locking rod 112 is connected to the locking sleeve 240, so that the plug and the socket are firmly and reliably connected, and the plug and the socket are prevented from falling off. After the RF plug 2 is inserted into the RF socket 25, RF signal transmission can be realized; after the optical fiber plug module 4 is inserted into the optical fiber socket module 22, optical signal transmission can be realized; after the high-speed single-ended plug module 5 is inserted into the high-speed single-ended socket module, high-speed signal and single-ended signal transmission can be realized. A plurality of wool button components 20 are installed in the high-speed single-ended socket module for connecting to the printed circuit board.

Claims

1. An integrated electrical connector, characterized in that: The invention comprises a socket and a plug, wherein the plug comprises a plug housing (10), wherein a radio frequency plug (2), an optical fiber plug module (4) and a high-speed single-ended plug module (5) are arranged in the plug housing (10), and a locking rod assembly (11) is movably arranged in the plug housing (10); the socket comprises a socket housing (14), wherein a radio frequency socket (25), an optical fiber socket module (22) and a high-speed single-ended socket module are arranged on the socket housing (14), and a locking sleeve assembly (24) is arranged in the socket housing (14); after the plug and the socket are plugged in, the locking rod assembly (11) is connected to the locking rod assembly (11) to prevent the plug and the socket from falling off.

2. The integrated electrical connector according to claim 1, wherein: The optical fiber plug module (4) is limitedly mounted in the plug housing (10) by means of an optical mounting plate assembly (6) and a mounting plate A (8), and the mounting plate A (8) is connected to the plug housing (10) by means of screws B (7); The optical mounting plate assembly (6) comprises an optical mounting plate (62) and an optical pressure plate (63), a limiting hole A is provided on the optical mounting plate (62), two optical guide columns (61) are arranged side by side on the optical mounting plate (62), and a plane A (60) is milled on the outer circumferential surface of the optical guide column (61), the optical pressure plate (63) is connected to the optical mounting plate (62) by means of a screw A (64), and a limiting hole B is provided on the optical pressure plate (63) at a position corresponding to the limiting hole A, and the size of the limiting hole B is smaller than the size of the limiting hole A.

3. The integrated electrical connector according to claim 1, wherein: The high-speed single-ended plug module (5) comprises a lower base (50), an upper base (54) and a plurality of plug pins (52); the lower base (50) is provided with a plurality of circular through holes; one end of the upper base (54) is connected to one end of the lower base (50); a flat square hole (53) is provided on the upper base (54) at a position corresponding to the circular through hole; two shaft shoulders are provided in the middle of the plurality of plug pins (52); a plane B (51) is milled on the outer circumferential surface of one of the shaft shoulders; the plurality of plug pins (52) are located in the lower base (50) and the upper base (54); one end of the plug pin (52) passes through the circular through hole to extend outside the lower base (50); and the other end passes through the flat square hole (53) to extend outside the upper base (54).

4. The integrated electrical connector according to claim 1, wherein: The locking rod assembly (11) comprises a locking ring A (3), a snap ring (110), a locking rod sleeve (111) and a locking rod (112); the locking ring A (3) is fixedly arranged in the plug housing (10); the locking rod sleeve (111) is provided with an external thread which is threadedly connected with the locking ring A (3); the locking rod sleeve (111) is provided with a snap-in groove along the axial direction; the locking rod (112) is snap-in inserted into the locking rod sleeve (111) through the snap-in groove and can be flexibly rotated relative to the locking rod sleeve (111); the snap ring (110) is sleeved on one end of the locking rod sleeve (111).

5. The integrated electrical connector according to claim 1, wherein: After the optical fiber socket module (22) is installed in the socket housing (14), it is limitedly mounted on the socket housing (14) by an optical mounting plate (19), and the optical mounting plate (19) is connected to the socket housing (14) by screws.

6. The integrated electrical connector according to claim 1, wherein: The high-speed single-ended socket module comprises an insulating plate (15), a mounting seat (17) and a plurality of jacks (23); the insulating plate (15) is fixed in a socket housing (14) by glue injection; the mounting seat (17) is connected to the socket housing (14) by screws; a correction plate (16) and a button mounting plate (21) are arranged in the mounting seat (17); a plurality of button assemblies (20) are arranged in the button mounting plate (21); one end of the plurality of jacks (23) passes through the insulating plate (15) and is connected to the insulating plate (15); the other end passes through the correction plate (16) and is connected to one end of the plurality of button assemblies (20) in a one-to-one correspondence.

7. The integrated electrical connector according to claim 1, wherein: The locking sleeve assembly (24) comprises a locking ring B (12) and a locking sleeve (240); the locking ring B (12) is fixedly arranged in the socket housing (14); the locking sleeve (240) is provided with an external thread threadedly connected to the locking ring B (12); and one end of the locking sleeve (240) is provided with an internal thread.

8. The integrated electrical connector according to claim 1, wherein: The locking sleeve assembly (24) further comprises a locking sleeve push rod (244), the locking sleeve push rod (244) being located inside the locking sleeve (240) and slidably connected to the locking sleeve (240), a spring (243) being sleeved on the locking sleeve push rod (244), one end of the spring (243) being against a shoulder surface of the locking sleeve push rod (244), and the other end being against a step surface inside the locking sleeve (240).

9. The integrated electrical connector according to claim 8, characterized in that: An annular groove A is provided on the outer ring surface of the locking sleeve (240) along the circumferential direction, and a locking sleeve sealing ring (241) is installed in the annular groove A; an annular groove B is provided on the middle part of the locking sleeve push rod (244) along the circumferential direction, and a push rod sealing ring (242) is installed in the annular groove B.

10. The integrated electrical connector according to claim 1, wherein: A tail cover assembly (1) is provided at one end of the plug housing (10), the tail cover assembly (1) comprising a right tail cover (103), a left tail cover (106), a wire outlet barrel (102) and a tail cover rod (101), a wire outlet barrel boss (104) is provided on the outer circumferential surface of one end of the wire outlet barrel (102), a tail cover semicircular groove (107) and a tail cover groove (105) are provided on the right tail cover (103) and the left tail cover (106) respectively, and the right tail cover (103) and the left tail cover (106) are ) is provided with a tail cover boss (108) at one end away from the tail cover groove (105); after the right tail cover (103) and the left tail cover (106) are embraced, the outlet barrel boss (104) is clamped in the tail cover semicircular groove (107); the tail cover grooves (105) on the right tail cover (103) and the left tail cover (106) are connected via a U-shaped tail cover rod block (100); and one end of the tail cover rod (101) passes through the U-shaped tail cover rod block (100) and is connected to the plug housing (10).

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