A waterproof FAKRA connector

Abstract

The application relates to a waterproof FAKRA connector which comprises a shell, an outer conductor, an insulator, an inner conductor and a sealing end cover component, wherein the sealing end cover component comprises an end cover and a rear sealing ring, the end cover comprises a rear cover and a sleeve connected to the front end of the rear cover and extending forward, and an inner sleeve; when the end cover is assembled with the shell from the rear to the front, the front end of the end cover limits the outer positioning protrusion of the outer conductor in the forward direction, and the shell is axially fixed to the sealing end cover component in the forward direction through the buckle cooperation of the buckle and the limiting protrusion. The waterproof FAKRA connector provided by the application simultaneously realizes the axial limitation of the outer conductor in the installation cavity of the shell and the axial positioning of the sealing end cover component on the shell, so that the number of parts is small, the installation operation is simple, and the size of the connector can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a connector for communication, in particular to a FAKRA connector. BACKGROUND

[0002] In the communication equipment such as the vehicle-mounted communication equipment, the data transmission needs to be led out through the connector to be connected with the signals of other equipment, and the coaxial connector is usually used to realize the communication between the communication equipment, the FAKRA connector in the coaxial connector can meet the general requirements of the electronic components in the automotive electronics industry, and is the standard interface of the automotive electronics industry. Since the car will encounter rainy and snowy weather when driving, the rain or other liquid will penetrate into the FAKRA connector when the male and female connectors are matched, which will cause the failure of the whole connector, so as to ensure the driving safety. Therefore, there is a waterproof FAKRA connector with waterproof function in the prior art, and the waterproof FAKRA connector product can be found in the patent document with the authorized announcement number CN212783980U.

[0003] The front end of such a waterproof FAKRA connector is a plug-in end, and the rear end is a wiring end. The connector (waterproof FAKRA connector) comprises a shell, an outer conductor, an insulator and an inner conductor arranged in the shell. The outer conductor, the insulator and the inner conductor constitute a coaxial contact piece. The rear end of the outer conductor is provided with a rear opening for the lead wire to penetrate into the outer conductor. The rear end of the shell is provided with a rear inlet. The rear end of the outer conductor is connected with the lead wire through a crimping sleeve. In order to realize the waterproof function of the wiring end, a sealing ring is arranged between the rear inlet of the shell and the outer conductor. The front end of the sealing ring is provided with a slot. The slot is fixed with the plug-in tongue with barb at the rear end of the shell in a plug-in manner. And the sealing glue is filled between the crimping sleeve and the shell after the sealing ring to reinforce.

[0004] As can be seen from the above, in the waterproof FAKRA connector product of the prior art, in order to avoid the penetration of liquid into the rear end (wiring end) of the connector, a plug-in sealing ring is used to plug into the shell, and sealing glue is needed to reinforce to realize the waterproof function. The parts are more, the structure is more complex, and the assembly is difficult. SUMMARY

[0005] The purpose of the present application is to provide a waterproof FAKRA connector to solve the technical problems of complex structure and inconvenient installation operation in the prior art.

[0006] The waterproof FAKRA connector provided by the application has a front-to-back extending central axis, and comprises a shell, an outer conductor, an insulator and an inner conductor, the outer conductor is installed in an installation cavity in the shell, a rear entrance for a wire to pass into the outer conductor is arranged at the rear end of the shell, and a sealing end cover component for sealing the rear entrance is further arranged, the sealing end cover component comprises an end cover and a rear sealing ring, the end cover comprises a rear cover and a sleeve connected to the front end of the rear cover and extending forward, the inner sleeve and the outer sleeve are distributed radially inward and outward, the inner sleeve is used for being inserted into the installation cavity, and the outer sleeve is used for being sleeved on the rear end of the shell, an annular gap for the rear end of the shell to be inserted is arranged between the inner sleeve and the outer sleeve, an end cover through hole for the outer conductor and the wire to be inserted is arranged in the inner sleeve and the rear cover and extends front-to-back, and the rear sealing ring is arranged in the end cover through hole and the annular gap to realize sealing between the end cover and the inner side wall of the shell and between the end cover and the wire, an outer positioning protrusion is arranged on the outer periphery of the outer conductor, an inner step for stopping the outer positioning protrusion rearward is arranged in the installation cavity of the shell, the front end of the inner sleeve has an end cover front end limiting surface for stopping the outer positioning protrusion forward, a limiting protrusion is arranged on the outer periphery of the shell, and a buckle is arranged on the outer sleeve of the end cover and buckles with the limiting protrusion on the shell, when the end cover is assembled with the shell from rear to front, the end cover front end limiting surface limits and stops the outer positioning protrusion of the outer conductor forward, and the buckle of the end cover and the buckle of the limiting protrusion realize axial fixing of the sealing end cover component on the shell in the forward direction.

[0007] The waterproof FAKRA connector provided by the application has a front-to-back extending central axis, and comprises a shell, an outer conductor, an insulator and an inner conductor, the outer conductor is installed in an installation cavity in the shell, a rear entrance for a wire to pass into the outer conductor is arranged at the rear end of the shell, and a sealing end cover component for sealing the rear entrance is further arranged, the sealing end cover component comprises an end cover and a rear sealing ring, the end cover comprises a rear cover and a sleeve connected to the front end of the rear cover and extending forward, the inner sleeve and the outer sleeve are distributed radially inward and outward, the inner sleeve is used for being inserted into the installation cavity, and the outer sleeve is used for being sleeved on the rear end of the shell, an annular gap for the rear end of the shell to be inserted is arranged between the inner sleeve and the outer sleeve, an end cover through hole for the outer conductor and the wire to be inserted is arranged in the inner sleeve and the rear cover and extends front-to-back, and the rear sealing ring is arranged in the end cover through hole and the annular gap to realize sealing between the end cover and the inner side wall of the shell and between the end cover and the wire, an outer positioning protrusion is arranged on the outer periphery of the outer conductor, an inner step for stopping the outer positioning protrusion rearward is arranged in the installation cavity of the shell, the front end of the inner sleeve has an end cover front end limiting surface for stopping the outer positioning protrusion forward, a limiting protrusion is arranged on the outer periphery of the shell, and a buckle is arranged on the outer sleeve of the end cover and buckles with the limiting protrusion on the shell, when the end cover is assembled with the shell from rear to front, the end cover front end limiting surface limits and stops the outer positioning protrusion of the outer conductor forward, and the buckle of the end cover and the buckle of the limiting protrusion realize axial fixing of the sealing end cover component on the shell in the forward direction.

[0008] Further, the front-to-back two sides of the outer positioning protrusion have front-to-back two limiting surfaces: a front end limiting surface and a rear end limiting surface, the front end limiting surface is used for abutting against the inner step forward, and the rear end limiting surface is used for abutting against the end cover front end limiting surface.

[0009] Further, the rear sealing ring comprises radially distributed inner sealing ribs and outer sealing ribs, the inner sealing ribs are radially inward protruding inner annular ribs distributed in a wave shape along the axial direction, and the outer sealing ribs are radially outward protruding outer annular ribs distributed in a wave shape along the axial direction; the outer sealing ribs are used to realize the sealing between the end cover and the inner side wall of the shell, and the inner sealing ribs are used to realize the sealing between the end cover and the wires.

[0010] Further, the rear sealing ring and the end cover are integrally formed as a whole structure, the inner sealing ribs are located in the through hole of the end cover and connected with the inner sleeve, and the outer sealing ribs are located in the annular gap and connected with the inner sleeve.

[0011] Further, the buckle has a rear limiting surface, the limiting protruding part has a front limiting surface, and the buckle has two and is distributed on both sides of the outer sleeve in the radial direction.

[0012] Further, the shell is provided with a primary lock key and a CPA locking structure, the primary lock key comprises a primary lock cantilever and a primary lock button, the CPA locking structure comprises a CPA lock sheet slidingly assembled on the shell, the CPA lock sheet comprises a lock sheet cantilever at the front end, a locking protrusion at the rear end, and a CPA limiting table at the bottom; the shell is provided with at least two levels of locking grooves distributed in front and back, the locking grooves are used to cooperate with the CPA limiting table to position the CPA lock sheet in front and back, so that the CPA lock sheet has a locking / unlocking state; the locking protrusion is used to block and limit the unlocking action of the downward movement of the primary lock button when the CPA lock sheet is in the locking state.

[0013] Further, the CPA lock sheet is provided with guide bosses on both sides, the shell is provided with limiting windows extending in front and back, and the guide bosses are slidingly assembled in the limiting windows in the front and back directions to realize the limiting and guiding of the CPA lock sheet in the up and down directions and in the front and back directions.

[0014] Further, the outer conductor comprises a front pipe segment, a necked segment, and a rear pipe segment distributed in front and back, the insulator is assembled into the front pipe segment, the necked segment forms a stopping step inside the outer conductor for stopping the insulator forward, the inner periphery of the front pipe segment is further provided with an inner positioning protrusion, and the outer periphery of the insulator is provided with an outer positioning groove corresponding to the inner positioning protrusion, the inner positioning protrusion is used to fall into the outer positioning groove to limit the insulator axially backward.

[0015] Further, the outer conductor is provided with a front sealing ring assembled on the front pipe segment. The front sealing ring is assembled on the front pipe segment of the outer conductor, which can realize the waterproof of the interface after the male connector and the female connector are plugged.

[0016] Further, the inner positioning protrusion is an inverted barb, and the outer positioning groove is a circumferential ring groove. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is an exploded view of the components of embodiment 1 of the present invention;

[0018] Figure 2 is a structural view of embodiment 1 of the present invention;

[0019] Figure 3 is a cross-sectional view of embodiment 1 of the present invention;

[0020] Figure 4 is a structural view of the sealing end cap component in Figure 1 ;

[0021] Figure 5 is a perspective view of the sealing end cap component in Figure 1 ;

[0022] Figure 6 is a structural view of the outer conductor in Figure 1 ;

[0023] Figure 7 is a perspective view of the outer conductor in Figure 1 ;

[0024] Figure 8 is a perspective view of the insulator in Figure 1 ;

[0025] Figure 9 is a structural view of the CPA lock tab in embodiment 1 of the present invention;

[0026] Figure 10 is an exploded view of the CPA lock tab and housing in embodiment 1 of the present invention;

[0027] Figure 11 is a use state view of the CPA lock tab in embodiment 1 of the present invention Figure 1 ;

[0028] Figure 12 is a use state view of the CPA lock tab in embodiment 1 of the present invention Figure 2 ;

[0029] Figure 13 is an exploded view of the components of embodiment 2 of the present invention;

[0030] Figure 14 is a view of the male connector and female connector in the plugged state in the present invention;

[0031] in the figure:

[0032] 1. Outer shell; 11. Limiting protrusion; 12. Inner step; 2. Outer conductor; 21. Front tube section; 211. Inner positioning protrusion; 212. Outer positioning protrusion; 2121. Front positioning surface; 2122. Rear positioning surface; 22. Necked section; 221. Stopping step; 23. Rear tube section; 3. Insulator; 31. Outer positioning groove; 4. Inner conductor; 5. Sealing end cap component; 51. End cap; 511. Rear cover; 512. Outer sleeve; 513. Inner sleeve; 52. Rear sealing ring; 52 1. Inner sealing rib; 522. Outer sealing rib; 53. Buckle; 54. End cap front limiting surface; 6. Front sealing ring; 7. Male connector; 8. Female connector; 9. Press sleeve; 100. CPA locking plate; 101. Locking plate cantilever; 102. Guide boss; 103. Locking protrusion; 104. CPA limiting platform; 200. Primary locking cantilever; 201. Volume groove; 202. Primary locking button; 301. Primary locking boss; 302. Limiting window; 303. Locking groove. Detailed Implementation

[0033] Embodiment 1 of the waterproof FAKRA connector of the present invention, as follows: Figures 1-12 As shown, a female connector (short for waterproof FAKRA connector, in embodiment 1 of this invention, the connector specifically refers to the "female connector") has a central axis extending front and rear, an axial direction extending along the central axis, and a radial direction perpendicular to the central axis. The front end of the connector is a plug end, and the rear end is a wiring end. The connector includes a housing 1, and the housing 1 has a mounting cavity. The connector also includes: an outer conductor 2 installed in the mounting cavity, an insulator 3 installed in the outer conductor 2, and an inner conductor 4 installed in the insulator 3. The outer conductor 2, the insulator 3, and the inner conductor 4 constitute a coaxial contact based on the central axis (in this embodiment, it is coaxial with the central axis; in other embodiments, it can also be a multi-core product distributed around the central axis). The rear end of the outer conductor 2 has a rear opening, and the rear end of the housing 1 has a rear inlet for wires to pass into the outer conductor 2. The outer conductor 2 is equipped with a crimp sleeve 9 for connecting wires.

[0034] The connector also includes a sealing end cap component 5, which includes an end cap 51 and a rear sealing ring 52. The rear sealing ring 52 and the end cap 51 are integrally formed (injection molded). The end cap 51 includes a rear cover 511, an outer sleeve 512, and an inner sleeve 513. The outer sleeve 512 and the inner sleeve 513 are connected to the front end face of the rear cover 511 and extend forward. The inner sleeve 513 and the outer sleeve 512 are radially distributed inward and outward based on the central axis. An annular gap is provided between the inner sleeve 513 and the outer sleeve 512. The annular gap allows the rear end of the outer shell 1 to be inserted and the outer sleeve 512 to be fitted over the rear end of the outer shell 1. The inner sleeve 513 and the rear cover 511 are provided with end cap 51 through holes extending forward and backward. The end cap 51 through holes allow the rear end of the outer conductor 2 to be inserted backward and allow the wire to be inserted forward.

[0035] The sealing end cover component 5 is provided with a buckle 53, which is in the form of an ear structure and is elastic, and has a rear limiting surface. The buckle 53 is distributed on both sides of the outer sleeve 512 in the radial direction. The outer shell 1 is provided with a limiting protrusion 11 on the outer circumferential surface, which has a forward limiting surface. When the rear end of the outer shell 1 is inserted into the annular gap and the outer sleeve 512 is sleeved on the outer shell 1, the buckle 53 can be buckled with the limiting protrusion 11 on the outer shell 1, so as to realize the axial fixation of the sealing end cover component 5 on the outer shell 1 in the forward direction.

[0036] The rear sealing ring 52 includes an inner sealing rib 521 and an outer sealing rib 522 distributed in the radial direction. The inner sealing rib 521 is an inner annular convex rib protruding in the radial direction and distributed in a corrugated shape in the axial direction. The outer sealing rib 522 is an outer annular convex rib protruding in the radial direction and distributed in a corrugated shape in the axial direction. The inner sealing rib 521 is located in the through hole of the end cover 51 and connected with the inner sleeve 513. The outer sealing rib 522 is located in the annular gap and connected with the inner sleeve 513. The outer sealing rib 522 is used to realize the sealing between the end cover 51 and the inner side wall of the outer shell 1. The inner sealing rib 521 is used to realize the sealing between the end cover 51 and the wire.

[0037] The outer conductor 2 is in the form of a tube and includes a front tube segment 21, a necked segment 22, and a rear tube segment 23 distributed in the front-rear direction. The insulator 3 is sleeved in the front tube segment 21. The rear tube segment 23 is provided with a crimp sleeve 9 for connecting the wire and constitutes a wire pressing end. The necked segment 22 forms a stop step 221 inside the outer conductor 2 for stopping the insulator 3 in the forward direction. The inner circumferential surface of the front tube segment 21 is provided with an inner positioning protrusion 211, which is specifically an inward-turned barb. When the insulator 3 is sleeved in the outer conductor 2, the stop step 221 at the necked segment 22 axially limits the rear end of the insulator 3 in the forward direction. The outer circumferential surface of the insulator 3 is further provided with an outer positioning groove 31 corresponding to the inner positioning protrusion 211. The outer positioning groove 31 is a circumferential ring groove. Therefore, when the insulator 3 is sleeved, the inner positioning protrusion 211 on the front tube segment 21 falls into the outer positioning groove 31 corresponding and provided on the outer circumferential surface of the insulator 3, so as to axially limit the insulator 3 in the rear direction, thereby realizing the fixation of the insulator 3 in the outer conductor 2.

[0038] The outer periphery of the front pipe section 21 of the outer conductor 2 is provided with an outer positioning protrusion 212 (in different embodiments of the application, the number of the outer positioning protrusions 212 is one or more than two), which is specifically a boss. When the outer conductor 2 is installed into the housing 1 of the female connector from back to front, the front and back of the outer positioning protrusion 212 has front and back positioning faces: a front end positioning face 2121 and a back end positioning face 2122. The front end positioning face 2121 of the outer positioning protrusion 212 abuts against the inner step 12 provided in the installation cavity of the housing 1, and then the front end face of the inner sleeve 513 of the sealing end cover component 5 installed into the installation cavity of the housing 1 from back to front limits and stops the back end positioning face 2122 of the outer positioning protrusion 212 of the outer conductor 2, so that the front end face of the inner sleeve 513 constitutes the front end limiting face 54 of the end cover, and at the same time, as described above, the buckle 53 on the sealing end cover component 5 can be buckled with the limiting protrusion 11 on the housing 1, realizing the axial fixation of the sealing end cover component 5 on the housing 1 in the forward direction, so as to finally realize the axial positioning between the sealing end cover component 5 and the housing 1 (in the backward direction, the sealing end cover component 5 is stopped by the back end face of the outer positioning protrusion 212 of the outer conductor 2), that is, the axial limiting of the outer conductor 2 in the installation cavity of the housing 1 and the axial positioning of the sealing end cover component 5 on the housing 1 are realized at the same time.

[0039] The insertion area (as shown in Figure 10 , the male connector 7 is inserted with the female connector 8) in the installation cavity of the housing 1 of the female connector 8 is provided with a front sealing ring 6, which is sleeved on the front pipe section 21 of the outer conductor 2, and the front sealing ring 6 realizes the waterproof of the insertion interface after the male connector 7 is inserted with the female connector 8.

[0040] As shown in Figures 9-12 , the female connector of the waterproof FAKRA connector embodiment 1 is further provided with a CPA locking structure, which is used for the secondary locking after the male and female connectors are inserted, and the CPA locking structure includes a CPA locking sheet 100 which is slidably assembled on the housing 1, the CPA locking sheet 100 includes a locking sheet cantilever 101 at the front end, a locking protrusion 103 at the back end, a guide boss 102 at the side, and a CPA limiting table 104 at the bottom. The housing 1 is further provided with a primary lock key, which includes a primary lock cantilever 200 at the front end for locking with an adapter connector and a primary lock button 202 at the back for pressing and unlocking.

[0041] The CPA lock piece 100 is loaded into the shell 1 from above, and the lock piece cantilever 101 of the CPA lock piece 100 falls into the volume groove 201 provided on the cantilever 200, and the front end surface of the lock piece cantilever 101 abuts against the end surface of the volume groove 201, so that the CPA lock piece 100 is stopped at the front end surface. Meanwhile, two limiting tables are extended on both sides of the rear end limiting side wall of the shell 1, and the limiting tables stop the rear end surface of the CPA lock piece 100; meanwhile, the limiting windows 302 extending forward and backward are provided on both sides of the shell 1, the guide bosses 102 provided on both sides of the CPA lock piece 100 are slidably assembled in the limiting windows 302 in the forward and backward directions, and the horizontal beams supporting the CPA lock piece 100 are further provided on the inside of the limiting windows 302 of the shell 1, so as to limit the CPA lock piece 100 in the upward and downward directions and guide the CPA lock piece 100 in the forward and backward directions. The locking grooves 303 are provided on both sides of the upper part of the shell 1, the locking grooves 303 are two half circular grooves distributed forward and backward, the locking grooves 303 are used for cooperating with the CPA limiting tables 104 of the CPA lock piece 100, the CPA limiting tables 104 are half circular bosses, can fall into the locking grooves 303, so as to block the forward and backward movement of the CPA lock piece 100, unless the operator pushes forward or backward, the CPA limiting tables 104 will be kept in the locking grooves 303, so as to fix the two positions of the CPA lock piece 100 forward and backward.

[0042] When the male connector and the female connector are plugged, the front end of the male connector has a primary locking boss 301, after plugging, the primary locking boss 301 of the male connector falls into the locking groove of the primary lock key of the female connector, and the lock piece cantilever 101 at the front end of the CPA lock piece 100 in the volume groove 201 is lifted, at this time, the front end stop function of the CPA lock piece 100 is unlocked, at this time, the CPA lock piece 100 can be pushed to move forward, and the state is as shown in Figure 11 When the CPA limiting table 104 of the CPA lock piece 100 is pushed forward into the secondary half circular groove (the locking grooves 303 are two half circular grooves distributed forward and backward, and are divided into primary and secondary half circular grooves), after reaching the position, the two locking bosses 103 provided on both sides of the rear end of the CPA lock piece 100 are below the primary lock button 202 of the primary lock key, so as to block and limit the downward movement of the primary lock button 202, at this time, the primary lock button 202 cannot be pressed to unlock, so as to realize the secondary fixation of the primary lock after the male connector and the female connector are plugged, and realize the secondary lock function, and the state is as shown in Figure 12 .

[0043] The embodiment 2 of the waterproof FAKRA connector of the present application is as shown in Figure 13 , Figure 14 In the present embodiment 2, the connector specifically refers to the male connector 7, and the plugging state of the male connector 7 of the embodiment 2 and the female connector 8 of the embodiment 1 is as shown in Figure 14 .

[0044] Since the tail end structure of the male connector 7 is identical to that of the female connector 8, the positioning structure between the outer conductor 2 and the insulator 3, and between the outer conductor 2 and the housing 1 of the male connector 7 is identical to the corresponding structure in the female connector 8 (for the same reason, the outer conductor 2 of the male connector 7 has an outer positioning protrusion 212, not limited to the protrusion form), and the positioning principle is also identical, which will not be described again. Meanwhile, in order to facilitate understanding, in the corresponding embodiment 2 Figure 13 , the reference numerals of the components of the connector are the same as those of the corresponding components in embodiment 1. The difference between the male connector 7 and the female connector 8 is that the male connector 7 does not have a front sealing ring.

Claims

1. A waterproof FAKRA connector having a central axis extending front to back, comprising a housing (1), an outer conductor (2), an insulator (3), an inner conductor (4), the outer conductor (2) being mounted in a mounting cavity in the housing (1), the housing (1) having a rear entry for a wire to enter the outer conductor (2), characterized in that, The sealing end cover component (5) for sealing the rear entrance includes an end cover (51) and a rear sealing ring (52), the end cover (51) includes a rear cover (511) and a sleeve (512) connected to the front end of the rear cover (511) and extending forward, and an inner sleeve (513), the inner sleeve (513) and the sleeve (512) are distributed radially inside and outside, the inner sleeve (513) is used for inserting into the installation cavity, the sleeve (512) is used for sleeving on the rear end of the shell (1), an annular gap is arranged between the inner sleeve (513) and the sleeve (512) for inserting the rear end of the shell (1), the inner sleeve (513) and the rear cover (511) are provided with through holes of the end cover (51) extending forward and backward for inserting the outer conductor (2) and the wire, and the rear sealing ring (52) is arranged in the through hole of the end cover (51) and the annular gap to realize the sealing between the end cover (51) and the inner side wall of the shell (1) and between the end cover (51) and the wire; the outer periphery of the outer conductor (2) is provided with an outer positioning protrusion (212), the installation cavity of the shell (1) is provided with an inner step (12) for stopping the outer positioning protrusion (212) backward, the front end of the inner sleeve (513) has an end cover front end limiting surface (54) for stopping the outer positioning protrusion (212) forward, the outer periphery of the shell (1) is provided with a limiting protrusion (11), and the sleeve (512) of the end cover (51) is provided with a buckle (53) buckled with the limiting protrusion (11) on the shell (1); when the end cover (51) is assembled with the shell (1) from rear to front, the end cover front end limiting surface (54) limits and stops the outer positioning protrusion (212) of the outer conductor (2) forward, and the shell (1) realizes the axial fixation of the sealing end cover component (5) in the forward direction through the buckling of the buckle (53) and the limiting protrusion (11).

2. A waterproof FAKRA connector according to claim 1, characterized in that, The front and rear sides of the outer positioning protrusion (212) have front and rear positioning surfaces: a front end positioning surface (2121) and a rear end positioning surface (2122), the front end positioning surface (2121) is used for abutting against the inner step (12) forward, and the rear end positioning surface (2122) is used for stopping and cooperating with the end cover front end limiting surface (54).

3. The waterproof FAKRA connector of claim 1, wherein, The rear sealing ring (52) includes an inner sealing rib (521) and an outer sealing rib (522) distributed radially inside and outside, the inner sealing rib (521) is an inner annular convex rib protruding radially in a corrugated shape along the axial direction, and the outer sealing rib (522) is an outer annular convex rib protruding radially in a corrugated shape along the axial direction; the outer sealing rib (522) is used for realizing the sealing between the end cover (51) and the inner side wall of the shell (1), and the inner sealing rib (521) is used for realizing the sealing between the end cover (51) and the wire.

4. A waterproof FAKRA connector according to claim 3, characterized in that, The rear sealing ring (52) and the end cover (51) are an integral structure, the inner sealing rib (521) is in the through hole of the end cover (51) and connected with the inner sleeve (513), and the outer sealing rib (522) is in the annular gap and connected with the inner sleeve (513).

5. The waterproof FAKRA connector of claim 1, wherein, The buckle (53) has a rear limiting surface, the limiting protrusion (11) has a front limiting surface, and the buckle (53) has two and is distributed on both sides of the outer sleeve (512) in the radial direction.

6. The waterproof FAKRA connector of claim 1, wherein, The shell (1) is provided with a primary lock key and a CPA locking structure, the primary lock key comprises a primary lock cantilever (200) and a primary lock button (202), the CPA locking structure comprises a CPA lock sheet (100) which is slidably assembled on the shell (1) in the front-rear direction, the CPA lock sheet (100) comprises a lock sheet cantilever (101) at the front end, a locking protrusion (103) at the rear end, and a CPA limiting table (104) at the bottom; the shell (1) is provided with at least two levels of locking grooves (303) which are distributed in the front-rear direction, the locking grooves (303) are used for cooperating with the CPA limiting table (104) to position the CPA lock sheet (100) in the front-rear direction, so that the CPA lock sheet (100) has a locking / unlocking state; and the locking protrusion (103) is used for blocking and limiting the unlocking action of the primary lock button (202) moving downward when the CPA lock sheet (100) is in the locking state.

7. A waterproof FAKRA connector according to claim 6, characterized in that, The CPA lock sheet (100) is provided with guide bosses (102) on both sides, the shell (1) is provided with limiting windows (302) which extend in the front-rear direction, and the guide bosses (102) are slidably assembled in the limiting windows (302) in the front-rear direction to limit and guide the CPA lock sheet (100) in the up-down direction and the front-rear direction.

8. A waterproof FAKRA connector according to any one of claims 1-7, characterized in that, The outer conductor (2) comprises a front pipe segment (21), a necked segment (22) and a rear pipe segment (23) which are distributed in the front-rear direction, the insulator (3) is assembled in the front pipe segment (21), the necked segment (22) forms a stop step (221) inside the outer conductor (2) for stopping the insulator (3) in the front direction, the inner periphery of the front pipe segment (21) is further provided with an inner positioning protrusion (211), the outer periphery of the insulator (3) is provided with an outer positioning groove (31) corresponding to the inner positioning protrusion (211), and the inner positioning protrusion (211) is used for falling into the outer positioning groove (31) to limit the insulator (3) in the rear axial direction.

9. A waterproof FAKRA connector according to claim 8, characterized in that, The front pipe segment (21) of the outer conductor (2) is sleeved with a front sealing ring (6).

10. The waterproof FAKRA connector of claim 8, wherein, The inner positioning protrusion (211) is an inverted barb, and the outer positioning groove (31) is a circumferential ring groove.

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