SMP connector

Abstract

The invention relates to the technical field of SMP connectors, in particular to an SMP connector which comprises a connector shell main body, one end of the connector shell main body is connected with a coaxial cable inner conductor, a fixing mechanism convenient for connecting and fixing the coaxial cable inner conductor is arranged outside the coaxial cable inner conductor, a combined shell is arranged on one side of the connector shell main body in an inserted mode, and the combined shell is connected with the coaxial cable inner conductor. And a connecting mechanism convenient for improving the use frequency of the bent connector is arranged in the connector shell main body. According to the SMP connector, the right-angle groove and the fixing groove are formed in the connector shell body, the right-angle fixing sleeve and the second insulator are installed in the right-angle groove and the fixing groove respectively, and the bent center pin is connected into the second insulator and the right-angle fixing sleeve. And meanwhile, one end of the bent center pin is connected with the coaxial cable inner conductor through the welding female pin, and the exterior of the welding female pin is connected and fixed through the first insulator, the combined shell and the welding machine cup, so that high-frequency bent angle connection is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of SMP connectors, in particular to an SMP connector. Background Art

[0002] SMP (blind-mate RF coaxial connector) connector is an ultra-small RF coaxial connector with the characteristics of small size, light weight, easy use, and wide operating frequency band. In the multi-channel, ultra-wideband test integrated system of high-speed differential modules, high integration and large bandwidth are required; the commonly used selected RF connectors are SMP or Mini-SMP; due to the high integration and limited installation space, the use of curved connectors has become popular.

[0003] When in use, the above-mentioned device does not have the high frequency and low bandwidth of the bent connector and the structure to prevent the connector and the coaxial cable from falling off and disconnecting. This makes the existing SMP connector in use unable to meet the demand because the bandwidth frequency of the general SMP straight connector is 0-40GHz and the bent connector is 0-22GHz. Based on the need to confirm the parasitic bandwidth suppression, the connector system needs to be tested by 2-3 times the frequency. In addition, when the existing SMP connector is connected to the coaxial cable, the coaxial cable and the connector joint are plugged and fixed, which is easy to loosen after long-term use, resulting in poor contact or disconnection. Based on the deficiencies of the existing technology, the present invention designs an SMP connector. Summary of the invention

[0004] The invention provides an SMP connector, which has the advantages of high frequency and low bandwidth of a curved connector and the anti-dropping of the connector and the coaxial cable.

[0005] The present invention provides the following technical solution: an SMP connector, comprising a connector shell body, one end of the connector shell body is connected to an inner conductor of a coaxial cable, an outer surface of the inner conductor of the coaxial cable is fixedly sleeved with an insulating layer, an outer surface of the insulating layer is fixedly sleeved with a sheath, a fixing mechanism for connecting and fixing the inner conductor of the coaxial cable is arranged on the outside of the inner conductor of the coaxial cable, a clamping mechanism for connecting and locking the positions of the inner conductor of the coaxial cable and the fixing mechanism is arranged on the fixing mechanism, a combined housing is insertedly arranged on one side of the connector shell body, and a connecting mechanism for increasing the use frequency of the bent connector is arranged inside the connector shell body;

[0006] A connecting mechanism, the connecting mechanism includes a right-angle groove, a second fixing groove, a right-angle fixing sleeve, a bent center needle and a second insulator, the right-angle groove is opened inside the connector shell body, the second fixing groove is opened at one end of the right-angle groove, the right-angle fixing sleeve is fixedly connected inside the right-angle groove, the bent center needle is fixedly connected inside the second fixing groove, and the second insulator is fixedly connected inside the right-angle fixing sleeve.

[0007] As a preferred technical solution of the present invention, a first fixing groove is opened through the interior of the combined shell, a threaded groove is opened at one end of the combined shell, a first insulator is fixedly installed inside the first fixing groove, a welding cup is fixedly inserted inside the first insulator, a welding cup is provided on one side of the combined shell, a threaded joint is fixedly connected to the side of the welding cup facing the combined shell, and a slot is opened through the interior of the welding cup.

[0008] As a preferred technical solution of the present invention, the fixing mechanism includes a collar, a threaded sleeve, a side groove, a first inner groove, an anti-slip washer and a locking nut. The collar is slidably inserted on the outer surface of the sleeve, the threaded sleeve is fixedly connected to one side of the collar, the side groove is opened on the side wall of the threaded sleeve, the first inner groove is opened on the inner wall of the threaded sleeve, the anti-slip washer is fixedly inserted in the first inner groove, and the locking nut is threadedly connected to the threaded sleeve.

[0009] As a preferred technical solution of the present invention, the clamping mechanism includes side plates, a rotating shaft, a rotating cylinder, a paddle, a connecting plate, a clamping joint, a second inner groove, a coil spring and a locking groove. The two groups of side plates are fixedly connected to the upper and lower sides of the outer surface of the ring, the rotating shaft is fixedly connected to the inside of a single group of side plates, the rotating cylinder is rotatably connected to the rotating shaft, the paddle is fixedly connected to the outer surface of the rotating cylinder, the connecting plate is fixedly connected to the outer surface of the rotating cylinder, the clamping joint is fixedly connected to the bottom of the front end of the connecting plate, the second inner groove is opened inside the rotating cylinder, the coil spring is arranged inside the second inner groove, and the locking groove is opened on the upper and lower sides of the welding machine cup.

[0010] As a preferred technical solution of the present invention, one end of the connector shell body is fixedly connected with a side mounting connector, and the other end of the connector shell body is provided with a plug-in slot.

[0011] As a preferred technical solution of the present invention, the two ends of the bent center needle are respectively arranged inside the side mounting joint and the plug-in slot, one end of the bent center needle is fixedly inserted inside the second insulator, and the other end of the bent center needle is fixedly inserted inside the welding mother needle.

[0012] As a preferred technical solution of the present invention, the threaded joint is threadably inserted into the interior of the thread groove, and the combined housing is fixedly inserted into the interior of the insertion groove.

[0013] As a preferred technical solution of the present invention, one end of the inner conductor of the coaxial cable is fixedly inserted in the interior of the welding female pin, and the insulating layer and the sheath are fixedly inserted in the interior of the slot.

[0014] As a preferred technical solution of the present invention, the anti-slip washer is sleeved on the outer surface of the sheath, and the locking nut is sleeved on the outer surface of the sheath.

[0015] As a preferred technical solution of the present invention, two ends of the coil spring are respectively connected to the inner wall of the second inner groove and the side wall of the rotating shaft, and the clamping joint is movably clamped in the interior of the locking groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This SMP connector adopts a bent needle structure for the inner conductor of the coaxial cable to avoid welding at the center of the inner conductor of the coaxial cable, while reducing the diameter of the inner conductor of the coaxial cable and increasing the cutoff frequency of the coaxial bending part, thereby achieving ultra-bandwidth, so that the bandwidth frequency of the curved connector shell body reaches 0-40GHz. This device is convenient for increasing the bandwidth usage frequency of the curved connector shell body.

[0018] 2. The SMP connector is configured by sleeve-fitting a collar, a threaded sleeve, a non-slip washer and a locking nut on the sleeve, and then inserting the insulating layer and the sleeve into the slot to be fixed, and rotating the welding cup into the threaded groove, so that the welding cup drives the inner conductor of the coaxial cable to be inserted into the welding female pin and connected with the bent center pin. At this time, the position of the collar and the clamping mechanism is moved and adjusted so that the clamping joint can be accurately inserted into the locking groove, and then the non-slip washer is moved to be embedded in the first inner groove, and the locking nut is moved to be screwed on the threaded sleeve, and the connection and fixation between the collar and the connector shell body are achieved by clamping the non-slip washer by the threaded sleeve. At this time, the paddle is pressed downward to drive the connecting plate and the clamping joint to rotate upward through the rotating drum and the rotating shaft, and finally the position of the clamping joint is fine-tuned and the paddle is released, and the coil spring is used to pull the rotating drum to rotate in the opposite direction to drive the clamping joint to be inserted into the locking groove to connect and lock the sleeve and the welding cup. The device is convenient for preventing the inner conductor, the insulating layer and the sleeve of the coaxial cable from being disengaged and disconnected from the inside of the welding cup and the welding female pin during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the connector of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection structure between the coaxial cable and the fixing mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the explosion structure of the fixing mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection structure between the clamping mechanism and the welding machine cup of the present invention;

[0024] Figure 6 It is a schematic diagram of the exploded cross-sectional structure of the clamping mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the exploded cross-sectional structure of the combined housing, welding female pin and welding machine cup of the present invention;

[0026] Figure 8 It is a schematic diagram of the exploded cross-sectional structure of the connecting mechanism of the present invention.

[0027] In the figure: 1, connector shell body; 101, side mounting connector; 102, plug-in slot; 2, coaxial cable inner conductor; 201, insulation layer; 202, sheath; 3, fixing mechanism; 301, collar; 302, threaded sleeve; 303, side groove; 304, first inner groove; 305, anti-skid washer; 306, locking nut; 4, clamping mechanism; 401, side plate; 402, rotating shaft; 403, rotating drum; 404, paddle; 405, connecting plate; 4 06, card connector; 407, second inner groove; 408, coil spring; 409, lock groove; 5, combined shell; 501, first fixed groove; 502, threaded groove; 503, first insulator; 504, welding female pin; 505, welding machine cup; 506, threaded connector; 507, slot; 6, connecting mechanism; 601, right-angle groove; 602, second fixed groove; 603, right-angle fixed sleeve; 604, bent center pin; 605, second insulator. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 A SMP connector comprises a connector shell body 1, one end of the connector shell body 1 is connected to an inner conductor 2 of a coaxial cable, an outer surface of the inner conductor 2 of the coaxial cable is fixedly sleeved with an insulating layer 201, an outer surface of the insulating layer 201 is fixedly sleeved with a sheath 202, a fixing mechanism 3 for connecting and fixing the inner conductor 2 of the coaxial cable is arranged on the outside of the inner conductor 2 of the coaxial cable, a clamping mechanism 4 for connecting and locking the positions of the inner conductor 2 of the coaxial cable and the fixing mechanism 3 is arranged on the fixing mechanism 3, a combined shell 5 is inserted on one side of the connector shell body 1, a connecting mechanism 6 for increasing the frequency of use of the bent connector is arranged inside the connector shell body 1, one end of the connector shell body 1 is fixedly connected to a side mounting connector 101, and a plug-in slot 102 is opened at the other end of the connector shell body 1, one end of the inner conductor 2 of the coaxial cable is fixedly inserted into the inside of a welding female pin 504, and the insulating layer 201 and the sheath 202 are fixedly inserted into the inside of a slot 507.

[0030] See also Figure 8 , connecting mechanism 6, connecting mechanism 6 includes a right-angle groove 601, a second fixed groove 602, a right-angle fixed sleeve 603, a bent center needle 604 and a second insulator 605, the right-angle groove 601 is opened inside the connector shell body 1, the second fixed groove 602 is opened at one end of the right-angle fixed sleeve 603 is fixedly connected to the inside of the right-angle groove 601, the bent center needle 604 is fixedly connected to the inside of the second fixed groove 602, the second insulator 605 is fixedly connected to the inside of the right-angle fixed sleeve 603, and the two ends of the bent center needle 604 are respectively arranged in the side mounting joint 101 and the plug-in groove 102, one end of the bent center needle 604 is fixedly plugged into the inside of the second insulator 605, and the other end of the bent center needle 604 is fixedly plugged into the inside of the welding female needle 504.

[0031] By providing a right-angle groove 601 and a second fixing groove 602, it is convenient to fix the right-angle fixing sleeve 603 and the second insulator 605. By providing a right-angle fixing sleeve 603 and the second insulator 605, it is convenient to prevent the connector shell body 1 or the connector connected in the plug-in groove 102 and the side-mounted connector 101 from contacting and affecting the bent center needle 604. By providing a bent center needle 604, and the bent center needle 604 is a bent needle structure, the diameter can be reduced and the cut-off frequency of the coaxial bending part can be increased.

[0032] See also Figure 7 A first fixing groove 501 is provided through the interior of the combined shell 5, a threaded groove 502 is provided at one end of the combined shell 5, a first insulator 503 is fixedly installed inside the first fixing groove 501, a welding cup 505 is fixedly plugged into the interior of the first insulator 503, a welding cup 505 is provided on one side of the combined shell 5, a threaded joint 506 is fixedly connected to the welding cup 505 facing the side of the combined shell 5, a slot 507 is provided through the interior of the welding cup 505, the threaded joint 506 is threadedly plugged into the interior of the threaded groove 502, and the combined shell 5 is fixedly plugged into the interior of the plug-in groove 102.

[0033] By providing a welding female needle 504, it is convenient to connect the curved center needle 604 with the inner conductor 2 of the coaxial cable. By providing a welding cup 505, a threaded joint 506 and a slot 507, it is convenient to fix the inner conductor 2 of the coaxial cable, the insulating layer 201 and the sheath 202 inside the welding cup 505 and the combined shell 5, so that the inner conductor 2 of the coaxial cable and the welding female needle 504 are plugged together. By providing a first insulator 503, it is convenient to prevent the welding female needle 504 from contacting other parts to affect the connection between the inner conductor 2 of the coaxial cable and the curved center needle 604.

[0034] See also Figure 3-5The fixing mechanism 3 includes a collar 301, a threaded sleeve 302, a side groove 303, a first inner groove 304, an anti-skid washer 305 and a locking nut 306. The collar 301 is slidably inserted into the outer surface of the sleeve 202, the threaded sleeve 302 is fixedly connected to one side of the collar 301, the side groove 303 is opened on the side wall of the threaded sleeve 302, the first inner groove 304 is opened on the inner wall of the threaded sleeve 302, the anti-skid washer 305 is fixedly inserted in the first inner groove 304, the locking nut 306 is threadedly connected to the threaded sleeve 302, the anti-skid washer 305 is sleeved on the outer surface of the sleeve 202, and the locking nut 306 is sleeved on the outer surface of the sleeve 202.

[0035] By providing the collar 301, the threaded sleeve 302 and the side groove 303, the clamping mechanism 4 can be fixed on the outer surface of the sleeve 202. By providing the first inner groove 304, the anti-skid washer 305 and the locking nut 306, and the anti-skid washer 305 and the locking nut 306 are respectively provided on the inner and outer sides of the threaded sleeve 302, the locking nut 306 can be used to squeeze the threaded sleeve 302 to shrink, so that the shrinking threaded sleeve 302 squeezes the anti-skid washer 305 to be clamped and fixed on the sleeve 202, thereby realizing the fixation of the collar 301 and the clamping mechanism 4.

[0036] See also Figure 5-6 The clamping mechanism 4 includes a side plate 401, a rotating shaft 402, a rotating drum 403, a paddle 404, a connecting plate 405, a clamping joint 406, a second inner groove 407, a coil spring 408 and a locking groove 409. The two sets of side plates 401 are fixedly connected to the upper and lower sides of the outer surface of the ring 301, the rotating shaft 402 is fixedly connected to the inside of the single set of side plates 401, the rotating drum 403 is rotatably connected to the rotating shaft 402, the paddle 404 is fixedly connected to the outer surface of the rotating drum 403, and the connecting plate 405 is fixedly connected to the outer surface of the rotating drum 403, the clamping joint 406 is fixedly connected to the bottom of the front end of the connecting plate 405, the second inner groove 407 is opened inside the rotating drum 403, the coil spring 408 is arranged inside the second inner groove 407, the locking groove 409 is opened on the upper and lower sides of the welding machine cup 505, the two ends of the coil spring 408 are respectively connected to the inner wall of the second inner groove 407 and the side wall of the rotating shaft 402, and the clamping joint 406 is movably clamped inside the locking groove 409.

[0037] By providing the side plate 401, the rotating shaft 402, the rotating cylinder 403, the paddle 404, the connecting plate 405, the clamping joint 406, and the locking groove 409, the fixing mechanism 3 is connected to the welding cup 505 to prevent the insulating layer 201 and the sheath 202 of the coaxial cable inner conductor 2 from being disengaged from the inside of the welding cup 505 and causing disconnection when used for a long time. By providing the second inner groove 407 and the coil spring 408, the clamping joint 406 can always be clamped in the locking groove 409 for locking without being controlled by external force.

[0038] Working principle: when an SMP connector is used, in the initial state, first, a right-angle groove 601 and a second fixed groove 602 are opened inside the connector shell body 1, and a right-angle fixed sleeve 603 and a second insulator 605 are installed in the right-angle groove 601 and the second fixed groove 602 respectively, and a bent center needle 604 is connected inside the second insulator 605 and the right-angle fixed sleeve 603, and at the same time, one end of the bent center needle 604 is connected to the inner conductor 2 of the coaxial cable through a welding female needle 504, and the outside of the welding female needle 504 is connected and fixed through the first insulator 503, the combined shell 5 and the welding cup 505, so as to realize high-frequency angle connection, and a threaded sleeve 302 is connected to the ring 301 arranged on the outside of the sheath 202, and an anti-slip washer 305 and a locking nut 306 are arranged inside and outside the threaded sleeve 302, respectively, and a clamping mechanism 4 is also connected to the ring 301, so as to fix the inner conductor 2 of the coaxial cable;

[0039] When it is necessary to increase the use frequency of the curved connector shell body 1, firstly, a bending needle structure is adopted for the inner conductor 2 of the coaxial cable to avoid welding at the center of the inner conductor 2 of the coaxial cable, and at the same time, the diameter of the inner conductor 2 of the coaxial cable is reduced to increase the cutoff frequency of the coaxial bending part, thereby achieving ultra-bandwidth, so that the bandwidth frequency of the curved connector shell body 1 reaches 0-40GHz. This device facilitates increasing the bandwidth use frequency of the curved connector shell body 1.

[0040] When it is necessary to prevent the inner conductor 2, the insulating layer 201 and the sheath 202 of the coaxial cable from being disengaged and disconnected from the inside of the welding cup 505 and the welding female pin 504 during long-term use, firstly, the collar 301, the threaded sleeve 302, the anti-skid washer 305 and the locking nut 306 are sleeved on the sheath 202, and then the insulating layer 201 and the sheath 202 are inserted into the inside of the slot 507 for fixing, and the welding cup 505 is rotated and screwed into the inside of the threaded groove 502, so that the welding cup 505 drives the inner conductor 2 of the coaxial cable to be inserted into the inside of the welding female pin 504 and connected with the curved center pin 604. At this time, the position of the collar 301 and the clamping mechanism 4 is moved and adjusted so that the clamping joint 406 can be accurately clamped into the inside of the locking groove 409, and then the anti-skid washer 305 is moved to be embedded in the first inner groove The locking nut 306 is moved inside the threaded sleeve 304 to screw it onto the threaded sleeve 302, and the threaded sleeve 302 is used to clamp the anti-slip gasket 305 to achieve the connection and fixation between the ring 301 and the connector shell body 1. At this time, the paddle 404 is pressed downward to drive the connecting plate 405 and the card connector 406 to rotate and move upward through the rotating cylinder 403 and the rotating shaft 402. Finally, the position of the card connector 406 is fine-tuned and the paddle 404 is released. The coil spring 408 is used to pull the rotating cylinder 403 to rotate in the opposite direction to drive the card connector 406 to snap into the inside of the locking groove 409 to lock the connection between the sheath 202 and the welding cup 505. The device is convenient for preventing the inner conductor 2, the insulating layer 201 and the sheath 202 of the coaxial cable from being disengaged and disconnected from the inside of the welding cup 505 and the welding female needle 504 during long-term use.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An SMP connector, comprising a connector housing body (1), characterized in that: One end of the connector shell body (1) is connected to a coaxial cable inner conductor (2); an insulating layer (201) is fixedly sleeved on the outer surface of the coaxial cable inner conductor (2); a sheath (202) is fixedly sleeved on the outer surface of the insulating layer (201); a fixing mechanism (3) is provided on the outside of the coaxial cable inner conductor (2) for connecting and fixing the coaxial cable inner conductor (2); a clamping mechanism (4) is provided on the fixing mechanism (3) for connecting and locking the positions of the coaxial cable inner conductor (2) and the fixing mechanism (3); a combined housing (5) is provided on one side of the connector shell body (1); and a connecting mechanism (6) is provided inside the connector shell body (1) for increasing the use frequency of the curved connector; A connecting mechanism (6), the connecting mechanism (6) comprising a right-angle groove (601), a second fixing groove (602), a right-angle fixing sleeve (603), a bent center needle (604) and a second insulator (605), the right-angle groove (601) being arranged inside the connector shell body (1), the second fixing groove (602) being arranged at one end of the right-angle groove (601), the right-angle fixing sleeve (603) being fixedly connected inside the right-angle groove (601), the bent center needle (604) being fixedly connected inside the second fixing groove (602), and the second insulator (605) being fixedly connected inside the right-angle fixing sleeve (603).

2. The SMP connector according to claim 1, characterized in that: The combined shell (5) has a first fixing groove (501) extending through it, one end of the combined shell (5) has a threaded groove (502), a first insulator (503) is fixedly installed inside the first fixing groove (501), a welding cup (505) is fixedly plugged inside the first insulator (503), a welding cup (505) is arranged on one side of the combined shell (5), a threaded joint (506) is fixedly connected to the welding cup (505) on one side facing the combined shell (5), and a slot (507) is extending through it.

3. The SMP connector according to claim 1, characterized in that: The fixing mechanism (3) comprises a collar (301), a threaded sleeve (302), a side groove (303), a first inner groove (304), an anti-skid washer (305) and a locking nut (306); the collar (301) is slidably inserted into the outer surface of the sleeve (202); the threaded sleeve (302) is fixedly connected to one side of the collar (301); the side groove (303) is provided on the side wall of the threaded sleeve (302); the first inner groove (304) is provided on the inner wall of the threaded sleeve (302); the anti-skid washer (305) is fixedly inserted into the inside of the first inner groove (304); and the locking nut (306) is threadedly connected to the threaded sleeve (302).

4. The SMP connector according to claim 1, characterized in that: The clamping mechanism (4) comprises a side plate (401), a rotating shaft (402), a rotating drum (403), a paddle (404), a connecting plate (405), a clamping joint (406), a second inner groove (407), a coil spring (408) and a locking groove (409); two groups of the side plates (401) are fixedly connected to the upper and lower sides of the outer surface of the sleeve ring (301); the rotating shaft (402) is fixedly connected to the inside of a single group of side plates (401); and the rotating drum (403) is rotatably connected to the rotating shaft ( 402), the paddle (404) is fixedly connected to the outer surface of the rotating cylinder (403), the connecting plate (405) is fixedly connected to the outer surface of the rotating cylinder (403), the clamping joint (406) is fixedly connected to the bottom of the front end of the connecting plate (405), the second inner groove (407) is opened inside the rotating cylinder (403), the coil spring (408) is arranged inside the second inner groove (407), and the locking groove (409) is opened on the upper and lower sides of the welding machine cup (505).

5. The SMP connector according to claim 1, characterized in that: One end of the connector shell body (1) is fixedly connected to a side mounting joint (101), and the other end of the connector shell body (1) is provided with a plug-in slot (102).

6. The SMP connector according to claim 1, characterized in that: The two ends of the bent center needle (604) are respectively arranged inside the side mounting joint (101) and the plug-in slot (102), one end of the bent center needle (604) is fixedly plugged into the inside of the second insulator (605), and the other end of the bent center needle (604) is fixedly plugged into the inside of the welding mother needle (504).

7. The SMP connector according to claim 2, characterized in that: The threaded joint (506) is threadedly inserted into the interior of the threaded groove (502), and the combined housing (5) is fixedly inserted into the interior of the insertion groove (102).

8. The SMP connector according to claim 1, characterized in that: One end of the inner conductor (2) of the coaxial cable is fixedly inserted into the inside of the welding female pin (504), and the insulating layer (201) and the sheath (202) are fixedly inserted into the inside of the slot (507).

9. The SMP connector according to claim 3, characterized in that: The anti-slip washer (305) is sleeved on the outer surface of the sleeve (202), and the locking nut (306) is sleeved on the outer surface of the sleeve (202).

10. The SMP connector according to claim 4, characterized in that: The two ends of the coil spring (408) are respectively connected to the inner wall of the second inner groove (407) and the side wall of the rotating shaft (402), and the clamping joint (406) is movably clamped in the interior of the locking groove (409).

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