FAKRA connector

Abstract

The FAKRA connector comprises an outer conductor, a cylindrical elastic sheet arranged in the outer conductor, an insulator and a terminal which are arranged in the elastic sheet, an insulating plug and a shielding cover which are arranged at the rear end of the outer conductor, a shell arranged at the front end of the outer conductor, and a coaxial line which is inserted into the outer conductor and is electrically connected with the terminal and the outer conductor, the outer conductor comprises a main body part extending along the plugging direction; a containing cavity penetrating through the front end and the rear end of the main body part is formed in the main body part, a small-diameter part is arranged in the middle of the containing cavity in the front-back direction, and the front end face and the rear end face of the small-diameter part are a first abutting face and a second abutting face respectively; a convex part is arranged at the front end of the elastic sheet and is propped against the first propping surface; the rear end of the elastic piece is chambered through a riveting chambering technology, so that the rear end of the elastic piece is riveted to abut against the inner wall of the rear end of the containing cavity and the second abutting face, and the elastic piece is fixed. According to the invention, the riveting jig is used for fixing the tail part of the elastic sheet on the outer conductor in a riveting and chambering manner, so that the elastic sheet can be prevented from falling off.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connector, and in particular to a FAKRA connector. BACKGROUND

[0002] FAKRA is the abbreviation of FAchKReis Automobil, and the FAKRA connector is widely used in the automotive industry and other fields. Through the FAKRA connector, the modules and components in the automobile are interconnected, and it is the signal hub of the electronic system.

[0003] The forming mode of the spring sheet in the FAKRA connector is generally through stamping and rounding or stretching forming. The concentricity and roundness of the spring sheet formed by stamping and rounding are difficult to guarantee. Through the stretching forming mode, the spring sheet is only fixed by hard interference during assembly, which not only has high requirements on the tolerance of the parts, but also has the risk of falling off after vibration. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a FAKRA connector to solve the problems of the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A FAKRA connector, comprising an outer conductor, a cylindrical spring sheet arranged in the outer conductor, an insulator and a terminal arranged in the spring sheet, an insulating plug and a shielding cover arranged at the rear end of the outer conductor, an outer shell arranged at the front end of the outer conductor, and a coaxial line inserted into the outer conductor and electrically connected with the terminal and the outer conductor;

[0007] The outer conductor comprises a main body portion extending in the plug-in direction; the main body portion is provided with a containing cavity penetrating through the front and rear ends of the main body portion, and the containing cavity is provided with a small-diameter portion at the middle position in the front-rear direction, and the front and rear end faces of the small-diameter portion are respectively a first abutting face and a second abutting face;

[0008] The front end of the spring sheet is provided with a protruding portion, and the protruding portion abuts against the first abutting face; the rear end of the spring sheet is expanded by a riveting and expanding process, so that the rear end of the spring sheet is riveted and abuts against the inner wall of the rear end of the containing cavity and the second abutting face, so as to fix the spring sheet.

[0009] In some embodiments, the rear end of the spring sheet is expanded to form an expanded portion after being expanded by the riveting and expanding process, the front end face of the expanded portion abuts against the second abutting face, and the outer side wall of the expanded portion abuts against the inner wall of the rear end of the containing cavity.

[0010] In some embodiments, the second abutting face is a vertical face perpendicular to the axial direction of the spring sheet;

[0011] The hole expansion portion comprises a hole expansion section extending radially outward from the rear end of the spring sheet, and an extension section extending axially backward from the end of the hole expansion section;

[0012] The hole expansion section is in abutment with the second abutment surface, and the outer side wall of the extension end is in abutment with the inner wall of the rear end of the accommodating cavity.

[0013] In some embodiments, the outer conductor further comprises a fixing portion extending from the rear end of the main body portion in a direction perpendicular to the main body portion;

[0014] The terminal is in a bent structure, comprising a contact portion and a connecting portion perpendicular to each other, the contact portion is inserted into the spring sheet, and the connecting portion extends from the rear end of the spring sheet and towards the fixing portion; the contact portion and the connecting portion are both arranged in the accommodating cavity, and the coaxial line is inserted into the accommodating cavity from the fixing portion and welded with the connecting portion.

[0015] In some embodiments, the connecting portion is provided with a through slot extending along the length direction of the connecting portion, the slot opening of the through slot faces the rear end of the accommodating cavity, and the core material of the coaxial line extends into the through slot and is welded with the connecting portion.

[0016] In some embodiments, the bent portion of the terminal is provided with a notch facing the rear end of the accommodating cavity, so that the contact portion and the connecting portion are connected through a thin sheet, facilitating bending.

[0017] In some embodiments, the terminal is formed by stamping.

[0018] In some embodiments, the insulator comprises an insertion portion and a positioning portion; the insertion portion extends along the axial direction of the spring sheet, and the insertion portion is provided with a insertion hole, the contact portion of the terminal is inserted into the insertion hole; the positioning portion is arranged at the rear end of the insertion portion, and the rear end surface of the positioning portion is provided with a positioning slot, and the connecting portion of the terminal is arranged in the positioning slot.

[0019] In some embodiments, the insulating plug comprises a plug portion and a cover portion, the cover portion is arranged at the rear end of the accommodating cavity to close the accommodating cavity, the plug portion extends forward from the cover portion, and the plug portion is inserted into the notch of the terminal to fix the terminal.

[0020] In some embodiments, the first abutment surface is an arc-shaped transition surface connecting the small-diameter portion and a large-diameter portion located at the front end of the small-diameter portion.

[0021] The application has the advantages that the tail of the elastic sheet is riveted and expanded to be fixed on the outer conductor, the elastic sheet holding force can reach more than 200N, and the risk of elastic sheet falling off during transportation, storage and use is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the FAKRA connector in the embodiment of the application;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the FAKRA connector in the embodiment of the application;

[0025] Figure 3 It is a schematic diagram of the structure of the FAKRA connector in the embodiment of the application; Figure 2 It is a schematic diagram of the structure of the FAKRA connector in the embodiment of the application;

[0026] Figure 4 It is a schematic diagram of the exploded structure of the FAKRA connector in the embodiment of the application;

[0027] Figure 5 It is a schematic diagram of the structure of the FAKRA connector in the embodiment of the application; Figure 4 It is a schematic diagram of the structure of the FAKRA connector in the embodiment of the application;

[0028] Figure 6 It is a schematic diagram of the structure of the elastic sheet in the embodiment of the application;

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of the elastic sheet in the embodiment of the application;

[0030] Figure 8 It is a schematic diagram of the structure of the outer conductor in the embodiment of the application;

[0031] Figure 9 It is a schematic diagram of the cross-sectional structure of the outer conductor in the embodiment of the application;

[0032] Figure 10 It is a schematic diagram of the structure of the insulator in the embodiment of the application;

[0033] Figure 11 It is a schematic diagram of the structure of the terminal in the embodiment of the application;

[0034] Figure 12 It is a schematic diagram of the structure of the insulating plug in the embodiment of the application.

[0035] In the drawings, the components represented by each reference numeral are listed as follows:

[0036] 10, FAKRA connector;

[0037] 100, outer conductor; 110, main body portion; 111, accommodating cavity; 1111, small diameter portion; 1112, first abutting surface; 1113, second abutting surface; 120, fixed portion;

[0038] 200, elastic sheet; 210, elastic arm; 220, protruding portion; 230, hole expanding portion; 231, hole expanding section; 232, extending section;

[0039] 300, insulator; 310, insertion portion; 311, insertion hole; 320, positioning portion; 321, positioning groove;

[0040] 400, terminal; 410, contact portion; 420, connecting portion; 421, through groove; 401, notch;

[0041] 500, insulating plug; 510, plug portion; 520, cover portion; 521, fixing groove;

[0042] 600, shielding cover;

[0043] 700, housing; 710, clamping structure;

[0044] 800, coaxial cable; 810, core material; 820, outer layer braid. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] The present application provides a FAKRA connector. As shown in Figures 1 to 5 The FAKRA connector 10 in the present application includes an outer conductor 100, an elastic sheet 200, an insulator 300, a terminal 400, an insulating plug 500, a shielding cover 600, a housing 700, and a coaxial cable 800.

[0047] The outer conductor 100 is made of metal and serves as grounding and shielding. As shown in Figure 3 The elastic sheet 200 is arranged in the outer conductor 100. As shown in Figure 4 The elastic sheet 200 is in a cylindrical shape. The elastic sheet 200 is provided with an elastic arm 210 at the front end to clamp the mating connector.

[0048] As shown in Figure 3As shown, the insulator 300 and the terminal 400 are arranged in the spring piece 200. The insulator 300 is used to insulate the terminal 400 and the spring piece 200, the outer conductor 100. The terminal 400 is used to connect with the terminal of the mating connector to transmit signals. The insulating plug 500 and the shielding cover 600 are arranged at the rear end of the outer conductor 100, the insulating plug 500 is used to cooperate with the insulator 300 to insulate the terminal 400. And, the periphery of the insulating plug 500 can also abut against the inner wall of the outer conductor 100, the insulating plug 500 and the outer conductor 100 are sealed by the sealing ring to achieve waterproof. The shielding cover 600 is a metal cover used to close the rear end of the outer conductor 100.

[0049] As shown in Figure 3 , the shell 700 is arranged at the periphery of the front end of the outer conductor 100, and the shell 700 is provided with a clamping structure 710 for clamping the mating connector.

[0050] As shown in Figure 2 and Figure 3 , the coaxial line 800 is inserted into the outer conductor 100 and electrically connected with the terminal 400 and the outer conductor 100. Specifically, the core material 810 of the coaxial line 800 is connected with the terminal 400 to realize signal transmission. The outer layer braid 820 of the coaxial line 800 is connected with the outer conductor 100 connector to realize grounding.

[0051] In the embodiments of the present application, as shown in Figure 8 and 9 , the outer conductor 100 includes a main body part 110 and a fixed part 120. The main body part 110 extends along the plug-in direction (X direction). The fixed part 120 extends from the rear end of the main body part 110 in a direction perpendicular to the main body part 110. As shown in Figure 9 , the main body part 110 is provided with a receiving cavity 111 penetrating through the front and rear ends of the main body part 110, that is, the front and rear ends of the receiving cavity 111 are open, which facilitates the installation of other parts into the outer conductor 100. As shown in Figure 9 , the receiving cavity 111 is provided with a small-diameter part 1111 at the middle position along the front and rear direction (X direction), and the front and rear end faces of the small-diameter part 1111 are respectively a first abutting face 1112 and a second abutting face 1113. The small-diameter part 1111, the first abutting face 1112 and the second abutting face 1113 are arranged to facilitate the fixation of the spring piece 200.

[0052] As shown in Figure 2 , Figure 6 and Figure 7 , the front end of the spring piece 200 is provided with a protruding part 220. As shown in Figure 2 , the protruding part 220 abuts against the first abutting face 1112. As shown in Figure 2 and Figure 7 , the rear end of the spring piece 200 is expanded by a riveting and expanding process. As shown inFigure 2 As shown, the rear end of the elastic sheet 200 is expanded by riveting and is abutted against the inner wall 111a of the rear end of the accommodating cavity 111 and the second abutment surface 1113, so that the elastic sheet 200 is fixed in the outer conductor 100.

[0053] In the embodiment, the tail of the elastic sheet 200 is expanded by riveting and fixed on the outer conductor 100, and the holding force of the elastic sheet 200 can reach more than 200N, avoiding the risk of falling of the elastic sheet 200 in the process of transportation, storage and use caused by the traditional hard interference fixing mode. In the embodiment, the elastic sheet 200 can be formed by a metal stamping and stretching process, avoiding the problem that the concentricity and roundness of the elastic sheet 200 cannot be guaranteed caused by the stamping and round wrapping forming process.

[0054] As shown in FIG. 2, the elastic sheet 200 is installed into the outer conductor 100, and then the rear end of the elastic sheet 200 is expanded by riveting to fix the elastic sheet 200 in the outer conductor 100. Figure 2 As shown in FIG. 2, the rear end of the elastic sheet 200 is expanded by riveting and is abutted against the inner wall 111a of the rear end of the accommodating cavity 111 and the second abutment surface 1113, so that the elastic sheet 200 is fixed in the outer conductor 100. Figure 7 As shown in FIG. 2, the rear end of the elastic sheet 200 is expanded by riveting and is abutted against the inner wall 111a of the rear end of the accommodating cavity 111 and the second abutment surface 1113, so that the elastic sheet 200 is fixed in the outer conductor 100. Figure 2 As shown in FIG. 2, the rear end of the elastic sheet 200 is expanded by riveting and is abutted against the inner wall 111a of the rear end of the accommodating cavity 111 and the second abutment surface 1113, so that the elastic sheet 200 is fixed in the outer conductor 100.

[0055] As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200. Figure 9 As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200. Figure 7 As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200. Figure 2 As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200.

[0056] As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200. Figure 9 As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200. Figure 7 As shown in FIG. 2, the second abutment surface 1113 of the outer conductor 100 is a vertical surface perpendicular to the axial direction (X direction) of the elastic sheet 200.

[0057] As shown in Figure 11 , the terminal 400 is a bent structure, including a contact portion 410 and a connecting portion 420 perpendicular to each other. As shown in Figure 2 , Figure 9 and Figure 11 , the contact portion 410 of the terminal 400 is inserted into the spring 200, and the connecting portion 420 of the terminal 400 is extended out of the rear end of the spring 200 and towards the fixing portion 120 of the outer conductor 100, so that the coaxial line 800 inserted into the outer conductor 100 from the fixing portion 120 of the outer conductor 100 can contact the connecting portion 420 of the terminal 400, realizing the electrical connection between the coaxial line 800 and the terminal 400.

[0058] With reference to Figure 2 , the contact portion 410 and the connecting portion 420 of the terminal 400 are both arranged in the accommodating cavity 111 of the outer conductor 100, and the coaxial line 800 is inserted into the accommodating cavity 111 from the fixing portion 120 of the outer conductor 100 and welded with the connecting portion 420 of the terminal 400. In the embodiment of the present application, the bent terminal 400 structure and the welding connection between the coaxial line 800 and the terminal 400 are adopted, and compared with the contact connection, the welding connection has higher reliability. The terminal 400 is formed by stamping process. In order to facilitate the transportation and storage of materials, the straight terminal 400 can be formed by the stamping die first, and the terminal 400 is bent by the jig before assembly to form the bent terminal 400. During assembly, the contact portion 410 of the bent terminal 400 is assembled into the insulator 300, and the connecting portion 420 of the bent terminal 400 is connected with the core material 810 of the coaxial line 800 by spot welding.

[0059] As shown in Figure 5 and Figure 8 , since the rear end of the outer conductor 100 is designed as an open structure, it is convenient to perform welding operation on the terminal 400 and the coaxial line 800 in the accommodating cavity 111 from the open rear end of the outer conductor 100.

[0060] As shown in Figure 11 , the connecting portion 420 of the terminal 400 is provided with a through slot 421 extending along the length direction of the connecting portion 420, and the slot opening of the through slot 421 faces the rear end of the accommodating cavity 111, so as to facilitate the welding of the connecting portion 420 of the terminal 400 from the rear end of the accommodating cavity 111. As shown in Figure 2 and Figure 11 , during assembly, the core material 810 of the coaxial line 800 extends into the through slot 421 of the terminal 400 and is welded with the connecting portion 420. In the embodiment of the present application, as described above, the terminal 400 is formed by stamping. The through slot 421 is formed by stamping the terminal 400.

[0061] With reference to Figure 11, a notch 401 is arranged at the bending position of the terminal 400. The notch 401 is towards the rear end of the accommodating cavity 111. The notch 401 is arranged at the bending position of the terminal 400 to facilitate bending of the terminal 400. As shown in Figure 11 , the notch 401 is arranged at the terminal 400 to make the connection between the contact portion 410 and the connecting portion 420 of the terminal 400 into a thin sheet, facilitating bending. As described above, in the embodiment of the present application, the terminal 400 is first formed into a straight terminal 400 by a stamping die to facilitate transportation. Then the straight terminal 400 is bent. The notch 401 is arranged to make the notch 401 into a thin sheet to facilitate bending.

[0062] As shown in Figure 10 , the insulator 300 includes an insertion portion 310 and a positioning portion 320. The insertion portion 310 of the insulator 300 extends along the axial direction of the elastic sheet 200. The insertion portion 310 is provided with a insertion hole 311, in combination with Figure 10 and Figure 11 , the contact portion 410 of the terminal 400 is inserted into the insertion hole 311. As shown in Figure 10 , the positioning portion 320 of the insulator 300 is arranged at the rear end of the insertion portion 310, and the rear end surface of the positioning portion 320 is provided with a positioning groove 321. In combination with Figure 10 and Figure 11 , the connecting portion 420 of the terminal 400 is arranged in the positioning groove 321.

[0063] As shown in Figure 12 , the insulating plug 500 includes a plug portion 510 and a cover portion 520. In combination with Figure 3 and Figure 12 , the cover portion 520 is arranged at the rear end of the accommodating cavity 111 of the outer conductor 100 to close the accommodating cavity 111. The plug portion 510 extends forward from the cover portion 520, in combination with Figure 2 , Figure 11 and Figure 12 , the plug portion 510 is inserted into the notch 401 of the terminal 400 to fix the terminal 400. As shown in Figure 12 , the front end surface of the cover portion 520 of the insulating plug 500 is provided with a fixing groove 521. In combination with Figure 2 , Figure 10 and Figure 12 , after the insulating plug 500 is covered at the rear end of the insulator 300, the fixing groove 521 of the front end surface of the cover portion 520 of the insulating plug 500 cooperates with the positioning groove 321 of the rear end surface of the positioning portion 320 of the insulator 300 to clamp the terminal 400.

[0064] As shown in Figure 2 , the shielding cover 600 is covered at the rear end of the outer conductor 100 to close the rear end of the accommodating cavity 111 in the outer conductor 100. The shielding cover 600 is a metal sheet and is consistent with the material of the outer conductor 100.

[0065] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0066] The above-described embodiments only express the implementation of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent protection of the present application should be subject to the appended claims.

Claims

1. A FAKRA connector characterized by, The coaxial cable comprises an outer conductor, a cylindrical spring sheet arranged in the outer conductor, an insulator and a terminal arranged in the spring sheet, an insulating plug and a shielding cover arranged at the rear end of the outer conductor, a shell arranged at the front end of the outer conductor, and a coaxial line inserted into the outer conductor and electrically connected with the terminal and the outer conductor; The outer conductor comprises a main body part extending along the insertion direction; the main body part is provided with an accommodating cavity penetrating through the front and rear ends of the main body part; the middle part of the accommodating cavity along the front and rear direction is provided with a small-diameter part; the front and rear ends of the small-diameter part are respectively provided with a first abutting surface and a second abutting surface; The front end of the spring sheet is provided with a protruding part, and the protruding part abuts against the first abutting surface; the rear end of the spring sheet is expanded by a riveting and expanding process, so that the rear end of the spring sheet is riveted and abuts against the inner wall of the rear end of the accommodating cavity and the second abutting surface, to fix the spring sheet.

2. The FAKRA connector according to claim 1, characterized in that, The rear end of the spring sheet is expanded by a riveting and expanding process to form an expanded part; the front end surface of the expanded part abuts against the second abutting surface, and the outer side wall of the expanded part abuts against the inner wall of the rear end of the accommodating cavity.

3. The FAKRA connector according to claim 2, characterized in that, The second abutting surface is a vertical surface perpendicular to the axial direction of the spring sheet; The expanded part comprises an expanded section extending radially outward from the rear end of the spring sheet, and an extension section extending axially backward from the end of the expanded section; The expanded section abuts against the second abutting surface, and the outer side wall of the extension section abuts against the inner wall of the rear end of the accommodating cavity.

4. The FAKRA connector of claim 1, wherein, The outer conductor further comprises a fixing part extending from the rear end of the main body part in a direction perpendicular to the main body part; The terminal is in a bent structure, comprising a contact part and a connecting part perpendicular to each other; the contact part is inserted into the spring sheet, and the connecting part extends from the rear end of the spring sheet and towards the fixing part; the contact part and the connecting part are arranged in the accommodating cavity, and the coaxial line is inserted into the accommodating cavity from the fixing part and welded with the connecting part.

5. The FAKRA connector according to claim 4, characterized in that, The connecting part is provided with a through slot extending along the length direction of the connecting part; the slot opening of the through slot faces the rear end of the accommodating cavity; the core material of the coaxial line extends into the through slot and is welded with the connecting part.

6. The FAKRA connector of claim 4, wherein, The bent part of the terminal is provided with a notch facing the rear end of the accommodating cavity, so that the contact part and the connecting part are connected through a thin sheet, facilitating the bending.

7. FAKRA connector according to any one of claims 4 to 6, characterized in that The terminal is formed by stamping.

8. The FAKRA connector of claim 4, wherein, The insulator comprises an insertion part and a positioning part; the insertion part extends along the axial direction of the spring sheet; the insertion part is provided with an insertion hole, and the contact part of the terminal is inserted into the insertion hole; the positioning part is arranged at the rear end of the insertion part; the rear end surface of the positioning part is provided with a positioning slot, and the connecting part of the terminal is arranged in the positioning slot.

9. The FAKRA connector of claim 6, wherein, The insulating plug comprises a plug part and a cover part; the cover part is arranged at the rear end of the accommodating cavity to close the accommodating cavity; the plug part extends forward from the cover part; the plug part is inserted into the notch of the terminal to fix the terminal.

10. The FAKRA connector of claim 1, wherein, The first abutting surface is an arc-shaped transition surface connecting the small-diameter portion and a large-diameter portion located at the front end of the small-diameter portion.

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