Lock catch structure of coaxial connector

Abstract

The utility model discloses a lock catch structure of a coaxial connector, which comprises a plastic shell and an outer conductor, a primary lock elastic arm is integrally formed on the plastic shell, a secondary lock seat is inserted into the plastic shell, and an annular boss is not formed on the outer conductor; the outer conductor comprises a contact area and a wire covering area, step surfaces which are distributed in the radial direction and used for achieving primary locking and secondary locking with the primary locking elastic arm and the secondary locking seat are formed between the contact area and the wire covering area, the end of the primary locking elastic arm abuts against the step surfaces, and the side face of the secondary locking seat is also in contact with the step surfaces. The secondary lock seat further wraps and abuts against the outer portion of the primary lock elastic arm so as to prevent the primary lock elastic arm from tilting outwards. According to the utility model, the step surface, the primary lock elastic arm and the secondary lock seat are adopted to respectively form primary and secondary lock catch structures, the structure is simple, and an annular boss does not need to be formed on the outer conductor, so that the contact area of the outer conductor is straight and smooth, and the high-frequency characteristic impedance matching fluctuation of the outer conductor is small; and the outer conductor can form impedance matching with a specific specification with the inner insulator and the inner conductor in the outer conductor.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a coaxial connector locking structure. Background technology:

[0002] The main supporting fields of connectors include transportation, communications, networks, IT, medical treatment, home appliances, etc. The rapid development of the technical level of products in the supporting fields and the rapid growth of the market have strongly driven the development of connector technology. So far, connectors have developed into a series of professional products with a complete range of products, rich varieties and specifications, diverse structural types, subdivided professional directions, obvious industry characteristics, and standardized standard systems.

[0003] As a type of connector, a coaxial connector can be used to interconnect circuit boards, RF modules, and circuit boards.

[0004] The coaxial connector in the prior art generally includes a plastic shell, an outer conductor inserted into the plastic shell, an inner insulator arranged inside the outer conductor, and an inner conductor inserted into the inner insulator and arranged coaxially with the outer conductor. The inner conductor is connected to the metal core wire of the cable, and the rear end of the outer conductor is wrapped and fixed to the outside of the insulating outer sheath of the cable.

[0005] The structure of the outer conductor 1 is as follows: Figure 1 and Figure 2 As shown, the outer conductor 1 is formed by wrapping a metal sheet, and at least two first annular bosses 11 and second annular bosses 12 are stamped and formed on the outside of the outer conductor 1, which protrude outward and are spaced apart. The first annular boss 11 and the second annular boss 12 are both annular, and the rear end face of the first annular boss 11 serves as a primary locking position, and the rear end face of the second annular boss 12 serves as a secondary locking position. After the outer conductor 1 is inserted into the plastic shell, the elastic arm arranged in the plastic shell abuts against the rear end face of the first annular boss 11 as the primary locking position to achieve primary locking, and a lock seat is fixed on the outside of the plastic shell from the outside to the inside, and the lock seat is partially pressed on the rear end face of the second annular boss 12 as the rear position to achieve secondary locking, thereby locking the outer conductor 1 in the plastic shell. Figure 2 The outer conductor 1 shown is relative to Figure 1 The outer conductor 1 shown is further provided with a petal-shaped opening spring piece 13 .

[0006] The above-mentioned outer conductor 1 has at least the following two disadvantages:

[0007] 1. Since the outer conductor 1 adopts two first annular bosses 11 and second annular bosses 12 protruding outward and spaced apart as the primary and secondary lock positions, respectively, the first annular bosses 11 and the second annular bosses 12 are both annular, so that the inner wall of the outer conductor 1 is formed with a corresponding groove, that is, the inner and outer walls of the outer conductor 1 are not smooth enough, so that the high-frequency characteristic impedance fluctuates greatly, so that the outer conductor 1 and the inner insulator and the inner conductor cannot form an impedance match of a specific specification, affecting the quality of the coaxial connector. At the same time, the lock seat is not related to the elastic arm, so that the elastic arm has the problem of being tilted outward and accidentally unlocked.

[0008] 2. Since the outer conductor 1 is formed by wrapping a metal sheet, providing the first annular boss 11 and the second annular boss 12 will make the processing of the outer conductor 1 more difficult, thus affecting the production efficiency.

[0009] In view of this, the inventor proposes the following technical solution. Utility model content:

[0010] The utility model aims to overcome the deficiencies of the prior art and provide a coaxial connector locking structure.

[0011] In order to solve the above technical problems, the utility model adopts the following technical solutions: the coaxial connector locking structure includes a plastic shell and an outer conductor inserted into the plastic shell and fixed with the plastic shell lock, the plastic shell is integrally formed with a primary locking spring arm for achieving primary locking with the outer conductor, the plastic shell is inserted with a secondary locking seat for achieving secondary locking with the outer conductor, and the outer conductor is not formed with an annular boss for locking with the plastic shell; the outer conductor includes a contact area located in the front section and a wrapped wire area located in the rear section, a radially distributed step surface is formed between the contact area and the wrapped wire area and is simultaneously used for achieving primary locking and secondary locking with the primary locking spring arm and the secondary locking seat, the end of the primary locking spring arm abuts against the step surface, and the side surface of the secondary locking seat also contacts the step surface, and the secondary locking seat also covers and abuts against the outside of the primary locking spring arm to prevent the primary locking spring arm from tilting outward.

[0012] Furthermore, in the above technical solution, the inner side surface of the primary locking spring arm is configured as an arc surface, and the arc surface covers the outer surface of the wire-wrapped region of the outer conductor.

[0013] Furthermore, in the above technical solution, an insertion slot is provided on the plastic shell, and a first card slot is provided on the inner wall of the insertion slot; a card protrusion adapted to the first card slot is provided on the outside of the secondary lock seat, and after the secondary lock seat is installed in the insertion slot, the card protrusion is engaged with the first card slot for positioning.

[0014] Furthermore, in the above technical solution, the inner wall of the insertion slot is further provided with a second card slot for pre-positioning, and the second card slot is located in front of the first card slot and is distributed in the same straight line.

[0015] Furthermore, in the above technical solution, a through avoidance hole is also provided on the outside of the secondary lock seat, so that an elastic arm is formed on the outside of the secondary lock seat, and the locking protrusion is provided on the outside of the elastic arm.

[0016] Furthermore, in the above technical solution, the cross-section of the secondary lock seat is a semi-square frame, and the secondary lock seat includes a main body seat and a first locking plate and a second locking plate formed on both sides of the main body seat and relatively spaced apart. A receiving groove for accommodating and pressing the primary lock spring arm is formed between the main body seat and the first locking plate and the second locking plate, and the outer sides of the first locking plate and the second locking plate are provided with the above-mentioned latching protrusions.

[0017] Furthermore, in the above technical solution, the ends of the first locking piece and the second locking piece are respectively provided with a first arcuate locking surface and a second arcuate locking surface, and the first arcuate locking surface and the second arcuate locking surface are both in contact with the outer surface of the wire wrapping area of ​​the outer conductor.

[0018] Furthermore, in the above technical solution, the plug-in port of the outer conductor is set as a circular closed ring, and the contact area of ​​the outer conductor is also formed with a plurality of contact springs, which are located on the rear side of the circular closed ring, and the end of the contact spring has an inner cavity extending from the outside to the inside into the outer conductor, and the end of the contact spring is provided with an arc-shaped contact surface; a hole is formed in the contact area of ​​the outer conductor corresponding to the position of the contact spring, and the front end of the hole is also provided with an inner stopper which is stretched and formed to protrude from the outside to the inside, and the inner stopper is located on the front side of the end of the contact spring.

[0019] Furthermore, in the above technical solution, the plastic shell is also provided with an elastic lever locking arm for symmetrically locking with the mating connector, the middle part of the elastic lever locking arm is integrally connected with the plastic shell and serves as a fulcrum for the swing of the elastic lever locking arm, and the unlocking pressing part of the elastic lever locking arm protrudes outside the upper end of the plastic shell; the upper end of the plastic shell is also formed with a first misunderstood locking stop part and a second misunderstood locking stop pin, the first misunderstood locking stop part and the second misunderstood locking stop pin are distributed outside the two sides of the unlocking pressing part, and the upper end surfaces of the first misunderstood locking stop part and the second misunderstood locking stop pin are flush with or protrude from the upper end surface of the unlocking pressing part; the rear end surface of the first misunderstood locking stop part is flush with the rear end surface of the unlocking pressing part, or the rear end surface of the first misunderstood locking stop part protrudes from the rear end surface of the unlocking pressing part, and the rear end surface of the unlocking pressing part protrudes outside the rear end surface of the second misunderstood locking stop pin, so that the rear end of the unlocking pressing part partially protrudes outside the line between the rear end surface of the first misunderstood locking stop part and the rear end surface of the second misunderstood locking stop pin, and serves as an unlockable pressing area.

[0020] Furthermore, in the above technical solution, an inner insulator is passed through the inside of the outer conductor, an inner conductor is passed through the inner insulator, and the inner conductor is coaxially arranged with the outer conductor; a clearance groove is provided at a position of the inner insulator corresponding to the contact spring piece; the outer conductor is also provided with a plurality of inner barbs, and the inner insulator is also provided with a plurality of hanging platforms, and the inner barbs are pressed into the hanging platforms to limit the inner insulator.

[0021] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model adopts a step surface and a primary locking spring arm and a secondary locking seat to form a primary locking structure and a secondary locking structure respectively, and its structure becomes simpler, so that the outer conductor does not need to be formed with an annular boss for locking with the plastic shell, so that the outer surface and the inner surface of the contact area of ​​the outer conductor are both straighter and smoother in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor becomes smaller, so that the outer conductor can form an impedance matching of a specific specification with the inner insulator and the inner conductor arranged inside it, and the effect is better. Description of the drawings:

[0022] Figure 1 is a three-dimensional diagram of a first outer conductor assembly in the prior art;

[0023] Figure 2 is a three-dimensional diagram of a second outer conductor assembly in the prior art;

[0024] Figure 3 It is a three-dimensional diagram of the outer conductor assembly of the utility model;

[0025] Figure 4 It is the front view of the outer conductor assembly of the utility model;

[0026] Figure 5 It is a cross-sectional view of the outer conductor assembly of the utility model;

[0027] Figure 6 It is a cross-sectional view of the outer conductor assembly of the utility model from another perspective;

[0028] Figure 7 It is the front view of the utility model;

[0029] Figure 8 yes Figure 7 Section along AA direction;

[0030] Fig. 9 It is a three-dimensional exploded view of the outer conductor assembly of the utility model;

[0031] Fig.10 yes Figure 7 Section along BB direction;

[0032] Fig.11It is a schematic diagram of the elastic lever lock arm of the utility model being unlocked by being pressed by a finger;

[0033] Fig.12 It is an exploded view of the utility model;

[0034] Fig.13 It is a cross-sectional view of the secondary lock seat in the pre-installed state in the utility model;

[0035] Fig.14 It is a cross-sectional view of the utility model after the secondary lock seat is installed in place. Specific implementation method:

[0036] The utility model is further described below in conjunction with specific embodiments and drawings.

[0037] See Figure 3-14 As shown, a coaxial connector locking structure includes: a plastic shell 2 and an outer conductor 3 inserted into the plastic shell 2 and locked with the plastic shell 2, the plastic shell 2 is integrally formed with a primary locking spring arm 21 for achieving primary locking with the outer conductor 3, and the plastic shell 2 is inserted with a secondary locking seat 4 for achieving secondary locking with the outer conductor 3.

[0038] The outer conductor 3 includes a contact area 301 at the front section and a wire wrapping area 302 at the rear section. The contact area 301 is used to connect with a mating connector, and the wire wrapping area 302 is used to connect with a cable 300.

[0039] The outer conductor 3 does not have an annular boss formed thereon for locking with the plastic shell 2, so that the outer surface and the inner surface of the outer conductor 3 are both straight and smooth in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor 3 is small, and the outer conductor can form an impedance matching of a specific specification with the inner insulator 5 and the inner conductor 6 arranged therein, thereby meeting the use requirements of the coaxial connector and ensuring product quality.

[0040] A radially distributed step surface 303 is formed between the contact area 301 and the wrapped wire area 302 and is used to simultaneously realize primary locking and secondary locking with the primary locking spring arm 21 and the secondary locking seat 4. The step surface 303 is annular, and the end of the primary locking spring arm 21 abuts against the step surface 303 to form a primary locking structure and lock it. The side surface of the secondary locking seat 4 also contacts the step surface 303 to form a secondary locking structure and lock it. The secondary locking seat 4 also wraps around and abuts against the outside of the primary locking spring arm 21 to prevent the primary locking spring arm 21 from tilting outward, thereby forming a more stable locking assembly with the plastic shell 2, and the locking effect is better. That is to say, the utility model adopts a step surface 303 and the primary locking spring arm 21 and the secondary locking seat 4 to form a primary locking structure and a secondary locking structure respectively, and its structure becomes simpler, so that the outer conductor 3 does not need to be formed with an annular boss for locking with the plastic shell 2, so that the outer surface and the inner surface of the contact area 301 of the outer conductor 3 are both straighter and smoother in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor 3 becomes smaller, and then the outer conductor can form an impedance matching of a specific specification with the inner insulator 5 and the inner conductor 6 arranged therein, and the effect is better.

[0041] The inner side surface of the primary locking spring arm 21 is set as an arc surface 211, and the arc surface 211 covers the outer surface of the wire-wrapped area 302 of the outer conductor 3 to form surface contact, so that the primary locking spring arm 21 can stably abut against the outer surface of the wire-wrapped area 302 of the outer conductor 3, thereby ensuring that the end of the primary locking spring arm 21 can also stably abut against the step surface 303, thereby ensuring the stability of the primary locking structure.

[0042] The assembly structure of the secondary lock seat 4 and the plastic shell 2 is as follows: an insertion slot 22 is provided on the plastic shell 2, and a first card slot 221 is provided on the inner wall of the insertion slot 22; a card protrusion 401 adapted to the first card slot 221 is provided on the outside of the secondary lock seat 4. After the secondary lock seat 4 is installed in the insertion slot 22, the card protrusion 401 is engaged with the first card slot 221 for positioning, thereby ensuring that the secondary lock seat 4 is stably installed in the plastic shell 2.

[0043] The inner wall of the insertion slot 22 is further provided with a second slot 222 for pre-positioning. The second slot 222 is located in front of the first slot 221 and is distributed in the same straight line. When assembling the secondary lock seat 4, when the secondary lock seat 4 is installed in the insertion slot 22, the protrusion 401 of the secondary lock seat 4 is first pressed into the second slot 222 and positioned. At this time, the pre-installed state is reached, and the secondary lock seat 4 does not enter the inner hole of the plastic shell 2 for inserting the outer conductor 3. At this time, the outer conductor 3 is inserted into the plastic shell 2 so that the outer conductor 3 can be smoothly and quickly inserted into the inner hole of the outer conductor 3. During this process, the outer surface of the contact area 301 of the outer conductor 3 will contact the primary lock spring arm 21. At this time, since the secondary lock seat 4 is not installed in place, it has enough space for the primary lock spring arm 21 to expand outward until the outer surface of the contact area 301 of the outer conductor 3 passes over the primary lock spring arm 21, so that the primary lock spring arm 21 is pressed on the outer surface of the wire wrapping area 302 by its own elastic force, and pulled back so that the end of the primary lock spring arm 21 contacts the step surface 303 to form a primary lock structure. At this time, the outer conductor 3 is assembled in place. Finally, continue to push the secondary lock seat 4 in, so that the protrusion 401 of the secondary lock seat 4 leaves the second slot 222 and is pressed into the first slot 221. At this time, the side surface of the secondary lock seat 4 also contacts the step surface 303 to form a secondary lock structure. At the same time, the secondary lock seat 4 also wraps around and abuts against the outside of the primary lock spring arm 21 to prevent the primary lock spring arm 21 from tilting outward, thereby forming a more stable locking assembly with the plastic shell 2, and the locking effect is better.

[0044] In order to enable the locking protrusion 401 of the secondary lock seat 4 to smoothly leave the second locking groove 222 and be pressed into the first locking groove 221 to form a stable assembly effect with the first locking groove 221, the following design is also made: a through avoidance hole 402 is also provided on the outside of the secondary lock seat 4, so that an elastic arm 403 is formed on the outside of the secondary lock seat 4, and the locking protrusion 401 is provided on the outside of the elastic arm 403, so that the locking protrusion 401 has elastic deformation ability through the elastic arm 403, that is, the locking protrusion 401 can be deformed from the outside to the inside and form an outward elastic force.

[0045] The specific structure of the secondary lock seat 4 is as follows: the cross-section of the secondary lock seat 4 is a semi-square frame, and the secondary lock seat 4 includes a main body seat 41 and a first locking piece 42 and a second locking piece 43 formed on both sides of the main body seat 41 and relatively spaced apart. A receiving groove 404 for accommodating and pressing the primary lock spring arm 21 is formed between the main body seat 41 and the first locking piece 42 and the second locking piece 43. The receiving groove 404 is wrapped around the outside of the primary lock spring arm 21, and the bottom of the receiving groove 404 contacts the outer surface of the primary lock spring arm 21 to press the primary lock spring arm 21. The outer sides of the first locking piece 42 and the second locking piece 43 are both provided with the aforementioned locking protrusion 401.

[0046] The ends of the first locking piece 42 and the second locking piece 43 are respectively provided with a first arcuate locking surface 421 and a second arcuate locking surface 431, which are both in contact with the outer surface of the wire-wrapped area 302 of the outer conductor 3 to ensure the stability of the assembly structure.

[0047] The plug-in port of the outer conductor 3 is set as a circular closed ring opening 30, so that the strength of the outer conductor 3 is stronger, and it is not easy to cause cracking through the rounded gap, thereby improving the quality of the product. In addition, the contact area 301 of the outer conductor 3 is also formed with a plurality of contact springs 31, which are located at the rear side of the circular closed ring opening, and the end of the contact spring 31 has an inner cavity extending from the outside to the inside of the outer conductor 3. The contact spring 31 is used to form a better plug-in and pull-out force when plugging with the mating connector, and can also improve the conduction capacity. The end of the contact spring 31 is provided with an arc-shaped contact surface 311, which contacts the outer surface of the mating connector through the arc-shaped contact surface 311, and has a large contact area, and the plugging and unplugging force effect is better; the contact area 301 of the outer conductor 3 is formed with a hole 32 corresponding to the contact spring 31, and the front end of the hole 32 is also provided with an inner stopper 321 that is stretched and formed from the outside to the inside, and the inner stopper 321 is located at the front side of the end of the contact spring 31. The function of the inner stopper 321 is to prevent the inserted mating connector from contacting the front end surface of the contact spring 31, and directly push the contact spring 31 backwards to damage the contact spring 31, so as to protect the end of the contact spring 31. The end of the contact spring 31 is in a bent V-shape.

[0048] The plastic shell 2 is also provided with an elastic lever locking arm 23 for symmetrically locking with a mating connector. The middle part of the elastic lever locking arm 23 is integrally connected with the plastic shell 2 and serves as a fulcrum for the swing of the elastic lever locking arm 23. The unlocking pressing portion 231 of the elastic lever locking arm 23 protrudes outside the upper end of the plastic shell 2; the upper end of the plastic shell 2 is also formed with a first misunderstood locking stop portion 24 and a second misunderstood locking stop pin 25, and the first misunderstood locking stop portion 24 and the second misunderstood locking stop pin 25 are distributed outside the two sides of the unlocking pressing portion 231, and the upper end surfaces of the first misunderstood locking stop portion 24 and the second misunderstood locking stop pin 25 are flush with or protrude from the unlocking pressing portion 23 1 upper end surface; the rear end surface of the first misinterpreted locking stopper 24 is flush with the rear end surface of the unlocking pressing portion 231, or the rear end surface of the first misinterpreted locking stopper 24 protrudes from the rear end surface of the unlocking pressing portion 231, and the rear end surface of the unlocking pressing portion 231 protrudes outside the rear end surface of the second misinterpreted locking stopper pin 25, so that the rear end of the unlocking pressing portion 231 partially protrudes outside the connection line between the rear end surface of the first misinterpreted locking stopper 24 and the rear end surface of the second misinterpreted locking stopper pin 25, and serves as the unlockable pressing area 230, so that only when the finger 100 presses the unlockable pressing area 230 can the unlocking pressing portion 231 be pressed down to achieve unlocking.

[0049] An inner insulator 5 is inserted into the outer conductor 3, and an inner conductor 6 is inserted into the inner insulator 5. The inner conductor 6 is coaxially arranged with the outer conductor 3. The outer conductor 3, the inner insulator 5 and the inner conductor 6 constitute an outer conductor assembly, and the outer conductor assembly is then installed in the plastic shell 2; the inner insulator 5 is provided with an escape groove 51 at a position corresponding to the contact spring 31, so that the contact spring 31 can be used normally, that is, there is enough space to extend into the space between the inner conductor 6 and the outer conductor 3; the outer conductor 3 is also provided with a plurality of inner buckling barbs 33, and the inner insulator 5 is also provided with a plurality of hanging platforms 52, and the inner buckling barbs 33 are pressed into the hanging platforms 52 to limit the inner insulator 5, thereby ensuring that the inner insulator 5 is stably installed in the outer conductor 3.

[0050] In summary, the utility model adopts a step surface 303 and the primary locking spring arm 21 and the secondary locking seat 4 to form a primary locking structure and a secondary locking structure respectively, and its structure becomes simpler, so that the outer conductor 3 does not need to be formed with an annular boss for locking with the plastic shell 2, so that the outer surface and the inner surface of the contact area 301 of the outer conductor 3 are both straighter and smoother in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor 3 becomes smaller, thereby enabling the outer conductor to form an impedance match of a specific specification with the inner insulator 5 and the inner conductor 6 arranged therein.

[0051] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A coaxial connector locking structure, comprising a plastic shell (2) and an outer conductor (3) inserted into the plastic shell (2) and locked with the plastic shell (2), the plastic shell (2) being integrally formed with a primary locking spring arm (21) for achieving primary locking with the outer conductor (3), the plastic shell (2) being inserted with a secondary locking seat (4) for achieving secondary locking with the outer conductor (3), Features: The outer conductor (3) is not formed with an annular boss for locking with the plastic shell (2); The outer conductor (3) comprises a contact area (301) located at the front section and a wire wrapping area (302) located at the rear section. A radially distributed step surface (303) is formed between the contact area (301) and the wire wrapping area (302) and is used to simultaneously realize primary locking and secondary locking with a primary locking spring arm (21) and a secondary locking seat (4). The end of the primary locking spring arm (21) abuts against the step surface (303), and the side surface of the secondary locking seat (4) also contacts the step surface (303). The secondary locking seat (4) also covers and abuts against the outside of the primary locking spring arm (21) to prevent the primary locking spring arm (21) from tilting outward.

2. The coaxial connector locking structure according to claim 1, characterized in that: The inner side surface of the primary locking spring arm (21) is arranged as a circular arc surface (211), and the circular arc surface (211) covers the outer surface of the wire-wrapped region (302) of the outer conductor (3).

3. The coaxial connector locking structure according to claim 1, characterized in that: The plastic shell (2) is provided with an insertion slot (22), and the inner wall of the insertion slot (22) is provided with a first clamping slot (221); the outer portion of the secondary lock seat (4) is provided with a clamping protrusion (401) adapted to the first clamping slot (221); after the secondary lock seat (4) is installed in the insertion slot (22), the clamping protrusion (401) is clamped and positioned with the first clamping slot (221).

4. The coaxial connector locking structure according to claim 3, characterized in that: The inner wall of the insertion slot (22) is also provided with a second slot (222) for pre-positioning, and the second slot (222) is located in front of the first slot (221) and is distributed in the same straight line.

5. The coaxial connector locking structure according to claim 4, characterized in that: The secondary lock seat (4) is also provided with a through avoidance hole (402) on the outside, so that an elastic arm (403) is formed on the outside of the secondary lock seat (4), and the locking protrusion (401) is arranged on the outside of the elastic arm (403).

6. The coaxial connector locking structure according to claim 4, characterized in that: The cross section of the secondary lock seat (4) is in the shape of a semi-square frame. The secondary lock seat (4) comprises a main body seat (41) and a first locking piece (42) and a second locking piece (43) formed on both sides of the main body seat (41) and relatively spaced and distributed. A receiving groove (404) for receiving and pressing the primary lock spring arm (21) is formed between the main body seat (41) and the first locking piece (42) and the second locking piece (43). The outer sides of the first locking piece (42) and the second locking piece (43) are both provided with the aforementioned locking protrusion (401).

7. The coaxial connector locking structure according to claim 6, characterized in that: A first arcuate locking surface (421) and a second arcuate locking surface (431) are respectively provided at the ends of the first locking piece (42) and the second locking piece (43), and the first arcuate locking surface (421) and the second arcuate locking surface (431) are both fitted to the outer surface of the wire wrapping region (302) of the outer conductor (3).

8. The coaxial connector locking structure according to any one of claims 1 to 7, characterized in that: The plug-in port of the outer conductor (3) is arranged as a circular closed ring opening (30), and the contact area (301) of the outer conductor (3) is also formed with a plurality of contact springs (31), the contact springs (31) are located at the rear side of the circular closed ring opening, and the end of the contact spring (31) has an inner cavity extending from the outside to the inside of the outer conductor (3), and the end of the contact spring (31) is provided with an arc-shaped contact surface (311); the contact area (301) of the outer conductor (3) is formed with a hole (32) at a position corresponding to the contact spring (31), and the front end of the hole (32) is also provided with an inner stop (321) which is stretched and formed to protrude from the outside to the inside, and the inner stop (321) is located at the front side of the end of the contact spring (31).

9. The coaxial connector locking structure according to claim 8, characterized in that: The plastic shell (2) is also provided with an elastic lever locking arm (23) for symmetrically locking with a mating connector, the middle part of the elastic lever locking arm (23) is integrally connected with the plastic shell (2) and serves as a fulcrum for the swing of the elastic lever locking arm (23), and the unlocking pressing portion (231) of the elastic lever locking arm (23) protrudes outside the upper end of the plastic shell (2); the upper end of the plastic shell (2) is also formed with a first misinterpretation locking stop portion (24) and a second misinterpretation locking stop pin (25), the first misinterpretation locking stop portion (24) and the second misinterpretation locking stop pin (25) are distributed outside the unlocking pressing portion (231) on both sides, and the first misinterpretation locking stop portion (24) and the second misinterpretation locking stop pin (25) are The upper end surface of the second mis-locking stop pin (25) is flush with or protrudes from the upper end surface of the unlocking pressing portion (231); the rear end surface of the first mis-locking stop portion (24) is flush with the rear end surface of the unlocking pressing portion (231), or the rear end surface of the first mis-locking stop portion (24) protrudes from the rear end surface of the unlocking pressing portion (231), and the rear end surface of the unlocking pressing portion (231) protrudes outside the rear end surface of the second mis-locking stop pin (25), so that the rear end of the unlocking pressing portion (231) partially protrudes outside the line between the rear end surface of the first mis-locking stop portion (24) and the rear end surface of the second mis-locking stop pin (25), and serves as an unlockable pressing area (230).

10. The coaxial connector locking structure according to claim 8, characterized in that: An inner insulator (5) is inserted into the outer conductor (3), an inner conductor (6) is inserted into the inner insulator (5), and the inner conductor (6) is coaxially arranged with the outer conductor (3); a clearance groove (51) is provided at a position of the inner insulator (5) corresponding to the contact spring sheet (31); the outer conductor (3) is also provided with a plurality of inner buckling barbs (33), and the inner insulator (5) is also provided with a plurality of hanging platforms (52), and the inner buckling barbs (33) are pressed into the hanging platforms (52) to limit the inner insulator (5).

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