Fakra connector

Abstract

The present invention relates to a Fakra connector. A baffle for blocking the rear opening is inserted upward from a vertical channel at the rear end of its rear housing. Inside the rear housing, a baffle slot for installing the baffle and extending vertically upward is provided at the rear of the vertical channel. Both side edges of the baffle are used to be inserted into the aforementioned baffle slot, and the front side of the baffle is used to block the insulator of the coaxial contact forward, so that the insulator is blocked and limited forward by the rear housing through the baffle. For the Fakra connector of the present invention, the baffle can axially block the insulator of the coaxial contact, making the fixation of the coaxial contact in the contact installation cavity more firm. At the same time, the baffle blocks the rear opening of the rear housing, so that except for the lower opening in the area where the rear housing of the product is located, the insulator is completely enclosed in the housing, which can effectively reduce the interference of external interference signals on the radio frequency signals inside the connector, thereby improving the reliability of the product.

Description

Technical Field

[0001] The present invention relates to a coaxial connector for transmitting signals, and more particularly to a fakra connector. Background Art

[0002] In communication devices such as in-vehicle communication devices, data transmission needs to be led out through a connector to be signal-connected to other devices. Usually, a coaxial connector is used, which can achieve the connection between communication devices with a coaxial cable. The Mini-type fakra connector in the coaxial connector can meet the requirements of the automotive electronics industry for the universality of electronic components and is a standard interface in the automotive electronics industry. Compared with other fakra connectors, the mini-type fakra connector has the advantages of smaller size and higher speed. The existing mini-type fakra connector products can be seen in the mini-type FAKRA automotive connector disclosed in the patent document with the authorization announcement number CN216289060U.

[0003] Such mini-type fakra connectors include: a housing, an insulator, an outer conductor, and an inner conductor. Among them, the outer conductor, the inner conductor, and the insulator form a coaxial contact member, and the coaxial contact member is inserted and fixed in a contact member mounting cavity provided in the housing. The housing includes two parts: a front shell and a rear shell. The front shell is used to connect and adapt the connector, and the rear shell is used to be mounted on a base, such as a printed circuit board. Since the coaxial contact member is an L-shaped bent contact member (the front end extends forward, the rear end extends downward, and the middle part is vertically bent), the rear part of the coaxial contact member is both inserted into the rear shell and protrudes from the lower part of the rear shell. In the prior art, considering the convenience of installing the coaxial contact member, the rear end of the rear shell of the fakra connector is open, and the coaxial contact member is fixed only by cooperating with the contact member mounting cavity, which is not stable enough. Moreover, the open housing at the rear end lacks protection, and it is easy for the internal radio frequency signal of the connector to be interfered by external interference signals, affecting the product reliability. Summary of the Invention

[0004] The purpose of the present invention is to provide a fakra connector to solve the technical problem that the open structure at the rear end of the housing in the prior art affects the product reliability.

[0005] The fakra connector of the present invention has a central axis extending front and rear, and includes a housing and coaxial contacts. A contact mounting cavity for mounting the coaxial contacts is provided in the housing. The central axis of the contact mounting cavity coincides with the central axis or is parallel to the central axis and distributed around the central axis. The housing includes a part for mounting on the base at the rear of the housing: a rear housing. The contact mounting cavity includes a part in the rear housing: a rear hole. The coaxial contact has a columnar contact part extending front and rear and a connecting part extending downward from the rear end of the columnar contact part, and includes: an insulator, an outer conductor, and an inner conductor. A vertical channel for mounting the connecting part of the coaxial contact, a rearward rear opening, and a downward lower opening are provided at the rear end of the rear housing. The upper end of the vertical channel, the rear opening, and the lower opening communicate with the rear hole. A baffle for blocking the rear opening is inserted upward from the vertical channel at the rear end of the rear housing. A baffle slot for mounting the baffle extending up and down is provided at the rear of the vertical channel inside the rear housing. The two side edges of the baffle are used to be inserted into the aforementioned baffle slot, and the front side of the baffle is used to block the insulator of the coaxial contact forward, so that the insulator is blocked and limited forward by the rear housing through the baffle.

[0006] In the fakra connector of the present invention, a baffle is assembled in the vertical channel at the rear end of the housing. The baffle can axially block the insulator of the coaxial contact, making the fixation of the coaxial contact in the contact mounting cavity more firm. At the same time, the baffle blocks the rear opening of the rear housing, and it can be realized that in the area of the rear housing of the product, except for the lower opening (the lower opening is for the pin of the coaxial contact to extend out and be welded to the printed circuit board), the insulator is completely enclosed in the housing, which can effectively reduce the interference of external interference signals on the internal radio frequency signals of the connector, thereby improving the product reliability.

[0007] Further, side limit protrusions are provided on the front side of the baffle at both side edges. The side limit protrusions of the baffle are in front and rear limit fixed cooperation with the baffle slot of the rear housing, preventing the baffle from falling out of the baffle slot, and making the baffle and the rear housing in front and rear limit cooperation.

[0008] Further, a middle limit protrusion is provided at the center of the front side of the baffle. The middle limit protrusion is used for front and rear limit fixation with the insulator.

[0009] Further, a baffle boss jack extending upward from the vertical channel is also opened in the upper side wall of the rear housing. The lower end of the baffle boss jack communicates with the vertical channel. A baffle boss is provided at the center of the upper end of the baffle. The baffle boss is used for cooperation with the baffle boss jack on the rear housing.

[0010] Further, chamfers are provided on the front side and the rear side at the edge of the baffle boss, and the chamfers make the thickness of the baffle boss gradually thinner in the direction towards the edge of the baffle boss, so as to facilitate the insertion into the baffle boss jack.

[0011] Furthermore, a baffle boss socket rib protruding forward is provided in the baffle boss socket, and the baffle boss socket rib is used to push the baffle boss on the baffle forward.

[0012] Furthermore, two convex corners are provided on both sides of the baffle boss at the edges on both sides of the upper end of the baffle, and the baffle boss and the two convex corners are arranged in a "mountain" shape, and the convex corners can facilitate the insertion of the two side edges of the baffle into the baffle slot.

[0013] Furthermore, an avoidance arc groove is provided on the upper side of the baffle at the intervals between the convex corners on both sides of the baffle boss, and the avoidance arc groove is used to avoid the wall inside the rear shell to facilitate the convex corner to be inserted into the baffle slot.

[0014] Furthermore, the avoidance arc groove and the front and rear side surfaces of the two convex corners are provided with bevel angles to facilitate the insertion of the convex corners into the baffle slots.

[0015] Furthermore, the shell is provided with more than two contact piece installation cavities, the rear end of the rear shell is provided with an intermediate partition between adjacent rear holes, the rear end of the intermediate partition protrudes backward, and the baffle is provided with an intermediate partition matching groove corresponding to the rear end of the intermediate partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded schematic diagram of the components of the embodiment 1 of the Fakra connector of the present invention;

[0017] Figure 2 yes Figure 1 The structural diagram of the Fakra connector in;

[0018] Figure 3 yes Figure 1 A schematic diagram of the first viewing angle of the front shell;

[0019] Figure 4 yes Figure 1 Schematic diagram of the front shell after being cut;

[0020] Figure 5 yes Figure 1 A schematic diagram of the first viewing angle of the rear shell in FIG.

[0021] Figure 6 yes Figure 1 A schematic diagram of the second viewing angle of the rear shell in FIG.

[0022] Figure 7 yes Figure 1 A schematic diagram of a part of the rear shell after being cut;

[0023] Figure 8 yes Figure 1 Schematic diagram of the baffle in FIG.

[0024] Figure 9 is Figure 1 a schematic cross-sectional view of the baffle in

[0025] Figure 10 is Figure 1 one of the schematic cross-sectional views of the fakra connector in

[0026] Figure 11 is Figure 1 another schematic cross-sectional view of the fakra connector in

[0027] Figure 12 is Figure 1 yet another schematic cross-sectional view of the fakra connector in

[0028] Figure 13 is Figure 1 still another schematic cross-sectional view of the fakra connector in

[0029] Figure 14 is Figure 1 the fifth schematic cross-sectional view of the fakra connector in

[0030] Figure 15 an exploded view of the components of Embodiment 2 of the fakra connector of the present invention;

[0031] Figure 16 is Figure 15 a schematic structural view of the fakra connector in

[0032] Figure 17 is Figure 15 a three-dimensional schematic view of the fakra connector in

[0033] Figure 18 is Figure 15 a schematic view of the front housing in

[0034] Figure 19 is Figure 15 a schematic view of the baffle from the first perspective in

[0035] Figure 20 is Figure 15 a schematic view of the baffle from the second perspective in

[0036] Figure 21 is Figure 15 a schematic view of the rear housing in

[0037] Figure 22 is Figure 15 one of the schematic cross-sectional views of the fakra connector in

[0038] Figure 23 is Figure 15The second cross-sectional schematic diagram of the fakra connector in

[0039] Figure 24 is Figure 15 The third cross-sectional schematic diagram of the fakra connector in

[0040] Figure 25 is Figure 15 The fourth cross-sectional schematic diagram of the fakra connector in

[0041] In the figure:

[0042] 1. Front shell; 11. Front hole; 12. Slot; 121. Upper slot wall; 1211. Limit rib; 1212. Guide groove; 122. Side slot wall; 13. Plug tongue; 14. Flank limit groove; 15. Top limit groove; 2. Rear shell; 21. Rear hole; 22. Vertical channel; 221. Baffle slot; 222. Baffle boss jack; 2221. Baffle boss jack rib; 23. Rear opening; 24. Lower opening; 25. Flank limit boss; 26. Plug; 261. Guide key; 262. Upper limit convex hull; 27. Tongue jack; 271. Lower limit convex hull; 28. Positioning post; 29. Intermediate partition; 30. Top limit boss; 3. Outer conductor; 31. Cylindrical body; 32. Tiled rear part; 4. Inner conductor; 5. Insulator; 51. Cylindrical body; 511. Rib; 52. Block-shaped rear part 521. Step-shaped rectangular groove; 6. Baffle; 61. Baffle boss; 62. Convex angle; 63. Oblique angle; 64. Avoidance arc groove; 65. Side limit protrusion; 66. Middle limit protrusion; 67. Intermediate partition mating groove. Specific embodiments

[0043] Embodiment 1 of the fakra connector of the present invention, as Figures 1 - 14 shown, the fakra connector includes a housing and a coaxial contact. The front end is a plug-in end. The fakra connector has a central axis extending forward and backward. A contact mounting cavity is provided in the housing for mounting the coaxial contact. The contact mounting cavity has a central axis, which coincides with the main axis where the plug-in center of the coaxial contact is located, and the central axis coincides with the central axis (single-core, single coaxial contact), or the central axis is parallel to the central axis and evenly distributed around the central axis (multi-core, multiple coaxial contacts).

[0044] The coaxial contact is a coaxial contact including an insulator 5, an outer conductor 3, and an inner conductor 4. The coaxial contact includes a cylindrical contact portion extending forward and backward and a connecting portion extending downward from the rear end of the cylindrical contact portion. The cylindrical contact portion and the connecting portion are distributed in an L shape. Embodiment 1 is a single-core connector, that is, the number of coaxial contacts is one. Of course, in other embodiments, the number of coaxial contacts can be more than two. The number of contact mounting cavities provided in the housing corresponds to the number of coaxial contacts. The contact mounting cavity in this embodiment is used to insert coaxial contacts, and the axis of the cylindrical contact portion of the coaxial contact coincides with the central axis of the contact mounting cavity. The housing has a central axis. In this embodiment 1, there is a single coaxial contact, and the central axis of the contact mounting cavity coincides with the central axis. In other embodiments, when there are multiple coaxial contacts, the central axis of the contact mounting cavity is evenly distributed around the central axis.

[0045] The housing includes a front housing 1 and a rear housing 2. The front housing 1 is used to connect a matching connector, and the rear housing 2 is used to be installed on a substrate, such as a printed circuit board. The contact mounting cavity is formed by docking the front hole 11 and the rear hole 21 respectively provided in the front housing 1 and the rear housing 2. The number of the contact mounting cavity in Embodiment 1 is one, so the number of the front hole 11 and the rear hole 21 are also one. Of course, in other embodiments, when the number of coaxial contacts is more than two, the number of the front holes 11 and the rear holes 21 should also be increased accordingly. The front and rear parts of the housing in Embodiment 1: the front housing and the rear housing are two separate parts. Of course, in some other embodiments, the front and rear parts of the housing can also be a whole, that is, the front housing and the rear housing are an integrated structure.

[0046] The outer conductor 3 of the coaxial contact piece includes a cylindrical body 31 and a shoe-shaped rear part 32 distributed front and back. The cylindrical body 31 has a first mounting hole arranged along the central axis for inserting the insulator 5. The shoe-shaped rear part 32 has a downward opening. The outer surfaces of the left and right sides of the shoe-shaped rear part 32 are provided with convex bumps for fixing with the rear shell 2.

[0047] The insulator 5 includes a cylindrical body 51 and a block-shaped rear portion. The cylindrical body 51 has a second mounting hole arranged along the central axis for inserting the inner conductor 4. A convex rib 511 is provided on the outer circumferential surface of the cylindrical body 51 for fixing with the outer conductor 3. A stepped rectangular groove is provided in the block-shaped rear portion, which is communicated with the second mounting hole. The inner conductor 4 is inserted into the insulator 5 with an interference fit.

[0048] The front shell 1 is an injection-molded plastic shell; a front hole 11 extending forward and backward is provided in the front shell 1 for inserting the front part of the coaxial contact. A front plug-in structure is provided at the rear end of the front shell 1 to match the rear plug-in structure provided at the front end of the rear shell 2.

[0049] The front plug-in structure of the front shell 1 includes a slot 12 and a tongue 13 which are distributed vertically. The slot 12 is a U-shaped groove body. The slot 12 includes: an upper slot wall 121 and two slot side walls which are distributed left and right. The slot 12 has a front slot opening, a rear slot opening and a downward lower slot opening that penetrate the slot 12 from front to back. A limiting rib 1211 is provided on the lower side surface of the upper slot wall 121. The limiting rib 1211 extends forward and backward and is used for limiting and fixing with the upper limiting convex hull 262 of the rear shell 2. There are more than two limiting ribs 1211, and a guiding groove 1212 is formed between adjacent limiting ribs 1211. The tongue 13 is located below the lower slot opening. The tongue 13 extends backward and is used for inserting into the tongue insertion hole 27 provided at the front end of the rear shell 2 for limiting and fixing with the rear shell 2. Therefore, there are two limiting structures distributed vertically at the rear end of the front shell 1 described above, which are respectively arranged on the slot 12 and the tongue 13. The two limiting structures are used for clamping the rear plug-in structure at the front end of the rear shell 2 in the middle. Moreover, wing limiting grooves 14 are also provided on the inner side surface of the front shell 1 for limiting and fixing with the two limiting convex parts of the rear shell 2. Specifically, there are two wing limiting grooves 14, which are respectively arranged on the inner side surfaces of the slot side walls of the slot 12.

[0050] The rear shell 2 is a rear shell 2 made of die-cast metal material. The rear shell 2 is in contact with the outer conductor 3 and can play a shielding role. Of course, in other embodiments, it can also be manufactured by stamping process. Wing limiting bosses 25 are provided on the outer side surface of the rear shell 2 for cooperating with the wing limiting grooves 14 of the front shell 1. Specifically, the wing limiting bosses 25 are arranged on the left and right outer side surfaces at the front part of the rear shell 2.

[0051] A rear hole 21 extending forward and backward is provided in the rear shell 2 for inserting the rear part of the coaxial contact member. A vertical channel 22 for installing the connecting part of the coaxial contact member is also provided at the rear end of the rear shell 2. The upper end of the vertical channel 22 is communicated with the rear hole 21. The rear shell 2 is provided with a rear opening 23 facing backward and a lower opening 24 facing downward. Both the rear opening 23 and the lower opening 24 are communicated with the rear hole 21. The front part of the rear shell 2 has a front plug-in structure which is inserted and fixed with the front plug-in structure at the rear part of the front shell 1.

[0052] Specifically, the rear plug-in structure at the front end of the rear shell 2 includes a plug 26 and a tongue socket 27 arranged vertically. The plug 26 forms a protrusion extending forward at the front end of the rear shell 2. The front orifice of the rear hole 21 is located on the front end face of the plug 26. The plug 26 is used to be inserted into the slot 12, i.e., the U-shaped groove body, of the front shell 1. A guiding key 261 is provided on the upper side surface of the plug 26. The guiding key 261 extends in the front and rear directions and is used to be inserted into the guiding groove 1212 between the limiting ribs 1211 provided on the lower side surface of the upper groove wall 121 of the slot 12 of the front shell 1 for lateral limiting. An upper limiting convex bump 262 is also provided on the upper side surface of the plug 26. The upper limiting convex bump 262 protrudes upward and is distributed beside the guiding key 261. The upper limiting convex bump 262 is used to be limited and fixed with the lower surface of the limiting rib 1211 on the lower side surface of the upper groove wall 121 of the U-shaped groove of the front shell 1. The tongue socket 27 is opened at the lower part of the front end of the rear shell 2 and extends backward. The tongue socket 27 is used to be inserted into the tongue 13 of the front shell 1. A lower limiting convex bump 271 is provided on the upper side of the wall of the tongue socket 27. Since the plug 26 and the tongue socket 27 are adjacently arranged and the lower side surface of the plug 26 simultaneously constitutes the upper side wall surface of the tongue socket 27, the lower limiting convex bump 271 is provided on the lower side surface of the plug 26 and is located in the tongue socket 27. The lower limiting convex bump 271 protrudes downward and is used to be limited and fixed with the upper side surface of the tongue 13 of the front shell 1. Both the upper limiting convex bump 262 and the lower limiting convex bump 271 extend in the front and rear directions and the contour of the cross-section is arc-shaped.

[0053] Moreover, 4 positioning posts 28 for welding with the printed circuit board are provided at the bottom of the rear shell 2. A baffle slot 221 extending vertically is provided at the rear part of the vertical channel 22 inside the rear shell 2. The baffle slots 221 are symmetrically arranged on the left and right opposite side walls inside the rear shell 2 and are used to install the baffle 6 described later. A baffle boss insertion hole 222 extending upward from the vertical channel 22 is also opened in the upper side wall of the rear shell 2. The baffle boss insertion hole 222 is used to install the baffle boss 61 on the baffle 6 described later. The lower end of the baffle boss insertion hole 222 communicates with the vertical channel 22, and the upper end forms an opening on the upper surface of the rear shell 2. A baffle boss insertion hole rib 2221 protruding forward is also provided in the baffle boss insertion hole 222. The baffle boss insertion hole rib 2221 is used to push the baffle boss 61 on the baffle 6 forward.

[0054] According to the above contents, the structure of the limiting cooperation between the front shell 1 and the rear shell 2 can be summarized as follows: 1. The side wing limiting groove 14 on the rear side of the front shell 1 cooperates with the side wing limiting boss 25 on the side of the rear shell 2 to realize the anti-drop function of the front shell 1 in the front and rear directions relative to the rear shell 2. 2. The limiting rib 1211 on the lower side of the upper groove wall 121 of the slot 12 of the front plug-in structure of the front shell 1 is interference-fitted with the upper limit convex bump 262 on the upper side of the plug 26 of the rear plug-in structure of the rear shell 2. At the same time, the upper side of the plug tongue 13 of the front plug-in structure of the front shell 1 is interference-fitted with the lower limit convex bump 271 on the upper side of the hole wall of the tongue plug hole 27 of the rear plug-in structure of the rear shell 2. Therefore, at the upper and lower joints between the front plug-in structure of the front shell 1 and the rear plug-in structure of the rear shell 2, the rear shell 2 straightens the front shell 1 relative to the central axis through the upper limit convex bumps 262 and the lower limit convex bumps 271 distributed above and below, thereby realizing the anti-deflection effect of the front shell 1 relative to the rear shell 2 relative to the central axis, thereby ensuring the coaxiality of the front hole 11 in the front shell 1 (the hole for installing the coaxial contact) and the rear hole 21 in the rear shell 2 along the center axis after the product is assembled.

[0055] The rear end of the rear shell 2 is equipped with a baffle 6 for covering the rear opening, which is inserted upward from the vertical channel 22. The two side edges of the baffle 6 are used to insert into the aforementioned baffle slot 221. A baffle boss 61 is provided in the center of the upper end of the baffle 6. Two convex corners 62 distributed on both sides of the baffle boss 61 are provided at the two side edges of the upper end of the baffle 6. The baffle boss 61 and the two convex corners 62 are arranged in a "mountain" shape. The baffle boss 61 is used to cooperate with the baffle boss socket 222 on the rear shell 2. Bevels 63 are provided on the front and rear sides at the edges of the baffle boss 61. The bevels 63 make the thickness of the baffle boss 61 gradually thinner in the direction toward the edge of the baffle boss 61, so as to facilitate the insertion of the baffle boss socket 222.

[0056] The upper side of the baffle 6 is provided with an avoidance arc groove 64 at the intervals between the convex corners 62 and the two sides of the baffle boss 61. The avoidance arc groove 64 is used to avoid the wall inside the rear housing 2, which is conducive to the insertion of the convex corner 62 into the baffle slot 221 and the insertion of the two sides of the baffle 6 into the baffle slot 221. The avoidance arc groove 64 and the front and rear sides of the two convex corners 62 are also provided with bevels 63, so that the convex corners 62 can be smoothly inserted into the baffle slot 221.

[0057] The front side of the baffle 6 is provided with side limit protrusions 65 on both sides, and the side limit protrusions 65 are spherical convex hulls. The side limit protrusions 65 of the baffle 6 are fixedly matched with the baffle slots 221 of the rear shell 2 in a front-to-back limit manner to prevent the baffle 6 from falling off from the baffle slots 221, and to make the baffle 6 and the rear shell 2 match in a front-to-back limit manner. The front side of the baffle 6 stops the insulator 5 forward, so that the insulator 5 is stopped forward by the rear shell 2 through the baffle 6. A middle limit protrusion 66 is provided in the center of the front side of the baffle 6, and the middle limit protrusion 66 is used to be fixedly fixed with the insulator 5 in the front-to-back direction.

[0058] As described above, the structure that the baffle 6 can be assembled in the rear case 2 and be in limit fit with the insulator 5 can be summarized as follows: First, the side limit protrusions 65 (spherical convex hulls) on both sides of the front side of the baffle 6 are in interference fit with the corresponding baffle slots 221 in the rear case 2 body, which plays a role in preventing the baffle 6 from detaching from the rear case 2 and axial limit for the baffle 6, forming the first axial limit point A; Second, the baffle boss 61 at the upper end of the baffle 6 is in fit with the baffle boss jacking rib 2221 protruding forward in the baffle boss jack 222 at the top inside the rear case 2, which plays an axial limit role for the baffle 6 relative to the rear case 2, forming the second axial limit point B. Third, the middle limit protrusion 66 provided in the center of the front side of the baffle 6 is in forward stop limit fit with the insulator 5, realizing the axial limit function of the insulator 5, and the two are in interference fit, which can eliminate the axial shaking gap of the insulator 5 relative to the rear case 2, and at the same time make the baffle 6 always receive an axial force acting in the opposite direction to the plug-in area (i.e., the backward acting force). The above first and second axial limit points are respectively located on the upper and lower sides of the central axis, so that when the baffle 6 receives the axial force of the insulator 5, it can prevent the baffle 6 of the housing from tilting relative to the rear case 2, thereby ensuring the axial positioning dimension accuracy of the insulator 5 relative to the rear case 2. Thus, by assembling the baffle 6, the mating surface S (i.e., the surface flush with the upper end of the convex angle 62) of the baffle 6 and the inner wall of the rear case 2 is in contact with the upper surface S1 of the inner wall of the rear case 2. The width dimension L1 of the baffle 6 of the housing in the left and right directions is greater than the hole dimensions L3 and L4 of the rear case 2, and L2 is the overlapping section of the baffle 6 and the rear case 2 during insertion. Therefore, in the area of the rear case 2 of the product, except for the printed circuit board welding standoff surface C (lower side) used for welding with the printed circuit board, the insulator 5 is completely enclosed in the cavity formed by the rear case 2 and the baffle 6, which can effectively reduce the interference of external interference signals on the internal radio frequency signals of the connector, and further improve the product reliability.

[0059] When the above embodiment of the present invention is in use, the inner conductor 4 is installed inside the insulator 5 and then inserted into the outer conductor 3 to form a coaxial contact. The coaxial contact is inserted into the rear case 2 and the front case 1. The front case 1 and the rear case 2 are assembled together by interference fit to form a coaxial contact installation cavity. Finally, the baffle 6 is forcibly inserted into the corresponding baffle slots 221 and baffle boss jacks 222 in the rear case 2 to complete the product assembly.

[0060] As Figures 15 - 25As shown in the figure, the main differences between the second embodiment of the fakra connector of the present invention and the structure of the first embodiment are as follows: 1. There are two coaxial contacts and corresponding two contact mounting cavities. 2. There are two contact mounting cavities in the housing. A middle partition 29 is provided between two rear holes 21 at the rear end of the rear housing 2. The rear end of the middle partition 29 protrudes backward. A middle partition mating groove 67 corresponding to the rear end of the middle partition 29 is provided on the baffle 6. 3. In addition to the flank limiting grooves 14 on the left and right sides, a top limiting groove 15 is added to the rear side of the upper surface of the front housing 1. Correspondingly, a top limiting boss 30 mating with the top limiting groove 15 is also added to the side of the rear housing 2. The top limiting boss 30 is provided on the upper surface of the plug 26 of the rear housing 2.

[0061] The second embodiment also has the same features as the first embodiment: The first axial limiting point A: The side limiting protrusions 65 (spherical convex hulls) on both sides of the front side of the baffle 6 are in interference fit with the corresponding baffle slots 221 in the rear housing 2 body, which plays a role in preventing the baffle 6 from coming off relative to the rear housing 2 and axial limiting, forming the first axial limiting point A; The second axial limiting point B: The baffle boss 61 at the upper end of the baffle 6 is engaged with the baffle boss jacking rib 2221 protruding forward in the baffle boss jack 222 at the top inside the rear housing 2, which plays an axial limiting role for the baffle 6 relative to the rear housing 2, forming the second axial limiting point B; In addition, the middle limiting protrusion 66 provided at the center of the front side of the baffle 6 is in forward stop limiting fit with the insulator 5, realizing the axial limiting effect of the insulator 5, and the two are in interference fit, which can eliminate the axial shaking gap of the insulator 5 relative to the rear housing 2, and at the same time make the baffle 6 always receive an axial force in the direction opposite to the plug-in area (i.e., a backward acting force).

[0062] The above first and second axial limiting points are respectively located on the upper and lower sides of the central axis, so that when the baffle 6 is subjected to the axial force of the insulator 5, it can prevent the housing baffle 6 from tilting relative to the rear housing 2, thereby ensuring the axial positioning dimension accuracy of the insulator 5 relative to the rear housing 2. Thus, by assembling the baffle 6, the mating surface S (i.e., the surface flush with the upper end of the convex angle 62) of the baffle 6 and the inner wall of the rear housing 2 is made to fit with the upper surface S1 of the inner wall of the rear housing 2. The width dimension L1 of the housing baffle 6 in the left and right directions is greater than the hole dimensions L3 and L4 of the rear housing 2. L2 is the overlapping section of the baffle 6 and the rear housing 2 during insertion. Therefore, in the area of the rear housing 2 of the product, except for the printed circuit board welding standoff surface C (lower surface) used for welding with the printed circuit board, the insulator 5 is completely enclosed in the cavity formed by the rear housing 2 and the baffle 6, which can effectively reduce the interference of external interference signals on the internal radio frequency signals of the connector, thereby improving the product reliability.

[0063] The flanking limit slots 14 on both sides of the rear slot 12 at the rear of the front shell 1 cooperate with the flanking limit bosses 25 on the left and right sides of the rear shell 2 to achieve the anti-disengagement function of the front shell 1 relative to the rear shell 2; the top limit slot 15 on the upper side of the rear of the front shell 1 cooperates with the top limit boss 30 on the upper side of the front end of the rear shell 2. At the same time, the center line x1 of the flanking limit bosses 25 on the left and right sides of the front end of the rear shell 2 is offset downward relative to the central axis x2 of the contact member mounting cavity in the rear shell 2. When an upward force F2 is applied to the front end of the front shell 1, at this time, due to the fact that the center line x1 of the flanking limit bosses 25 on the left and right sides of the front end of the rear shell 2 is offset downward relative to the central axis x2 of the contact member mounting cavity in the rear shell 2, the flanking limit slots 14 on the left and right sides of the front shell 1 cooperate with the flanking limit bosses 25 on both sides of the rear shell 2, and the acting force can prevent the front shell 1 from tilting upward relative to the rear shell 2.

[0064] In the use of Embodiment 2, after the rear shell 2 is fixed, when a downward force F1 is applied to the front end of the front shell 1, the top limit slot 15 on the upper side of the rear of the front shell 1 cooperates with the top limit boss 30 on the upper side of the front end of the rear shell 2, and at this time, it can prevent the front shell 1 from tilting downward relative to the rear shell 2; after the rear shell 2 is fixed, when an upward force F2 is applied to the front end of the front shell 1, due to the fact that the center line x1 of the flanking limit bosses 25 on the left and right sides of the front end of the rear shell 2 is offset downward relative to the central axis x2 of the contact member mounting cavity in the rear shell 2 as described above, the flanking limit slots 14 on both sides of the front shell 1 cooperate with the flanking limit bosses 25 on both sides of the rear shell 2, and the acting force can prevent the front shell 1 from tilting upward relative to the rear shell 2, realizing the anti-tilting function of the plastic outer shell relative to the rear shell 2.

[0065] In the above embodiments, the front shell and the rear shell are two separate components, that is, the front and rear parts of the outer shell are manufactured separately. However, for the baffle that provides shielding for the rear end of the outer shell and provides a stop for the rear end of the coaxial contact member, it does not depend on the structure of the front and rear parts of the outer shell being manufactured separately. Therefore, in some other embodiments of the present invention, the front and rear parts of the outer shell can also be an integral body, that is, the front shell and the rear shell are of an integral structure. At this time, the definitions of the front shell and the rear shell reflect the front and rear parts of the outer shell in terms of the front and rear positional relationship, and do not limit that the front shell and the rear shell must be two separate components that are plugged into each other.

Claims

1. Fakra connector with a central axis extending front and rear, comprising a housing and coaxial contacts, wherein a contact mounting cavity for mounting the coaxial contacts is provided in the housing, the central axis of the contact mounting cavity coincides with the central axis or is parallel to the central axis and distributed around the central axis, the housing includes a part for mounting on a substrate at the rear of the housing: a rear housing, and the contact mounting cavity includes a part in the rear housing: a rear hole, characterized in that, The coaxial contact member has a cylindrical contact portion extending forward and backward and a connecting portion extending downward from the rear end portion of the cylindrical contact portion, and includes: an insulator, an outer conductor, and an inner conductor. The rear end portion of the rear housing is provided with a vertical channel for installing the connecting portion of the coaxial contact member, a rear opening facing backward, and a lower opening facing downward. The upper end of the vertical channel, the rear opening, and the lower opening communicate with the rear hole; a baffle for blocking the rear opening is inserted upward from the vertical channel at the rear end portion of the rear housing. Inside the rear housing, a baffle slot for installing the baffle and extending up and down is provided at the rear of the vertical channel. The two side edges of the baffle are used for inserting into the aforementioned baffle slot, and the front side of the baffle is used for blocking the insulator of the coaxial contact member forward, so that the insulator is blocked and limited forward by the rear housing through the baffle; side limiting protrusions are provided at the two side edges on the front side of the baffle. The side limiting protrusions of the baffle are in front-back limiting and fixed cooperation with the baffle slot of the rear housing to prevent the baffle from falling out of the baffle slot, and the baffle and the rear housing are in front-back limiting cooperation. A middle limiting protrusion is provided at the center of the front side of the baffle. The middle limiting protrusion is used for limiting and fixing with the insulator in the front-back direction. A baffle boss is provided at the center of the upper end of the baffle. The baffle boss is used for cooperating with the baffle boss jack on the rear housing.

2. The fakra connector according to claim 1, characterized in that A baffle boss jack extending upward from the vertical channel is further provided in the upper side wall of the rear housing, and the lower end of the baffle boss jack communicates with the vertical channel.

3. The fakra connector according to claim 2, characterized in that, Bevel angles are provided on both the front side and the rear side at the edge of the baffle boss, and the bevel angles make the thickness of the baffle boss gradually thinner in the direction towards the edge of the baffle boss to facilitate insertion into the baffle boss jack.

4. The fakra connector according to claim 2, characterized in that, A baffle boss jack rib protruding forward is further provided in the baffle boss jack, and the baffle boss jack rib is used for pushing the baffle boss on the baffle forward.

5. The fakra connector according to claim 2, characterized in that, Two convex corners distributed on both sides of the baffle boss are provided at the two side edges of the upper end of the baffle. The baffle boss and the two convex corners are arranged in a "mountain" shape, and the convex corners can facilitate the insertion of the two side edges of the baffle into the baffle slot.

6. The fakra connector according to claim 5, characterized in that, Avoidance arc grooves are provided on the upper side of the baffle at the intervals from the convex corners on both sides of the baffle boss, and the avoidance arc grooves are used for avoiding the inner wall of the rear housing to facilitate the insertion of the convex corners into the baffle slot.

7. The fakra connector according to claim 6, characterized in that, Bevel angles are provided on the front and rear sides of the avoidance arc grooves and the two convex corners to facilitate the insertion of the convex corners into the baffle slot.

8. The fakra connector according to any one of claims 1-7, characterized in that, Two or more contact member installation cavities are provided in the outer housing. An intermediate partition is provided between adjacent rear holes at the rear end of the rear housing. The rear end of the intermediate partition protrudes backward, and an intermediate partition cooperation groove corresponding to the rear end of the intermediate partition is provided on the baffle.

Images