Fakra wire end connector
By setting pits on the outer conductor surface of the Fakra connector and injection molding of the insulating sleeve, the problem of eccentricity between the outer conductor and the insulating seat through hole is solved, and a more stable connection effect is achieved.
Patent Information
- Application Number
- CN202421598608.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-08
AI Technical Summary
Eccentricity is prone to occur between the outer conductor of the Fakra connector and the through-hole of the insulating seat, resulting in unstable connection.
By providing several pits on the outer surface of the outer conductor and injection molding of the insulating sleeves in these pits, the bonding between the outer conductor and the insulating sleeve is enhanced, thereby improving the axial retention force between the insulating sleeve and the outer conductor.
After the cable assembly is integrated into the insulated seat, a good concentricity is maintained between the outer conductor and the through hole of the insulated seat, which improves the stability of the connector.
Smart Images
Figure CN223023664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a Fakra wire-end connector for automobiles. Background Art
[0002] The Fakra connector is a general radio frequency signal connector in the automotive industry standard. In the era of Internet of Everything, the intelligence level of automobiles is getting higher and higher, the penetration rate of the ADAS intelligent driving assistance system is rapidly increasing, the usage of in-vehicle sensors is increasing, and the transmission requirements for high speed, high frequency and large data volume are relatively improved, and the usage of Fakra connectors also increases accordingly.
[0003] Chinese Utility Model Patent Publication No. 219144540 discloses a Fakra connector, which includes an insulating seat body and a cable assembly fixed in the insulating seat body. The cable assembly includes a central terminal, an insulator, an outer terminal, a plastic sleeve and a cable. The inner terminal is a straight rod-shaped extending forward and backward, the inner terminal is received in the insulator, the outer terminal is sleeved outside the insulator, and the insulator separates the central terminal and the outer terminal. The plastic sleeve is sleeved outside the outer terminal by an assembly method. The cable includes a core, an inner insulating layer, a metal braid layer and an insulating outer skin from inside to outside. The core is riveted to the rear end of the central terminal, and the metal braid layer is riveted to the rear end of the outer terminal. When the outer terminal is riveted to the cable, it is easy to shake, which will cause eccentricity between it and the plastic sleeve. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a Fakra wire-end connector, which has good concentricity between the outer conductor and the through hole of the insulating seat.
[0005] To achieve the foregoing purpose, the utility model adopts the following technical solutions: A Fakra wire-end connector includes an insulating seat and a cable assembly. The insulating seat is provided with a through hole for fixing the cable assembly. The cable assembly includes an inner conductor, an insulator, an outer conductor and a cable. The inner conductor is in a rod shape extending forward and backward. The insulator is provided with a central through hole for receiving the inner conductor and a side peripheral wall. The outer conductor is looped outside the insulator. The insulator separates the inner conductor and the outer conductor. The cable assembly further includes an insulating sleeve, and the insulating sleeve is injection molded outside the outer conductor. The outer surface of the outer conductor is provided with a plurality of pits, and the insulating sleeve is filled into the pits.
[0006] Further, the depth of the pits is 0.1 - 0.4 mm.
[0007] Further, the outer conductor is provided with 2 to 8 pits.
[0008] Further, the wall thickness of the insulating sleeve is 0.2 - 0.6 mm.
[0009] Further, a plurality of pits are distributed along the circumferential direction of the outer conductor.
[0010] Further, the outer conductor is provided with a plurality of riveting points embedded in the side circumferential walls of the insulator, and the riveting points form the pits on the outer surface of the outer conductor.
[0011] Further, the outer conductor includes a docking end at the front end, a riveting end at the rear end, and an intermediate portion connecting the docking end and the riveting end. A step with a front-high and rear-low configuration is formed between the docking end and the intermediate portion, and the insulating sleeve covers the outside of the intermediate portion and the step.
[0012] Further, the front end of the cable assembly is suspended in the corresponding through hole, and the outer surface of the insulating sleeve is in interference fit with the inner wall surface of the through hole.
[0013] Further, it further includes a pair of secondary buckle members installed on the left and right opposite sides of the insulating base for fixing each cable assembly. The secondary buckle members are provided with limiting arms extending into the insulating base. The front side surface of the insulating sleeve abuts against the step surface in the through hole forward, and the rear side wall of the insulating sleeve is abutted against forward by the limiting arms.
[0014] Further, the cable assembly further includes a riveting ring. The cable sequentially includes a conductive wire core, an inner insulating layer, a metal braided layer, and an outer insulating layer from inside to outside. The conductive wire core is riveted to the rear end of the inner conductor, and the metal braided layer is riveted to the rear end of the outer conductor through the riveting ring.
[0015] In the Fakra wire end connector of the present utility model, the insulating sleeve is injection-molded outside the outer conductor and filled into the pits on the surface of the outer conductor, which can improve the axial holding force between the insulating sleeve and the outer conductor and ensure the concentricity between the outer conductor and the through hole of the insulating base after the cable assembly is assembled into the insulating base. Description of the Drawings
[0016] Figure 1 is a perspective view of the Fakra wire end connector of the present utility model.
[0017] Figure 2 is Figure 1 the perspective exploded view of the Fakra wire end connector in
[0018] Figure 3 is Figure 1 the perspective combined view of the cable assembly of the Fakra wire end connector in
[0019] Figure 4 is Figure 3 the partial perspective exploded view of the cable assembly in
[0020] Figure 5 isFigure 3 Cross-sectional view of the wire end of the cable assembly in
[0021] Figure 6 is Figure 1 Cross-sectional view of the Fakra wire end connector in
[0022] Figure 7 is the cross-sectional view obtained along the A-A line of Figure 5 Detailed implementation mode
[0023] Here, the exemplary implementation modes will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation modes described in the following exemplary implementation modes do not represent all implementation modes consistent with the present utility model. On the contrary, they are only examples of devices, systems, devices and methods consistent with some aspects of the present utility model.
[0024] Please refer to Figure 1 and Figure 2 as shown, the present utility model discloses a Fakra wire end connector 100, which includes an insulating base 1, a plurality of cable assemblies 2 and two secondary snap members 3. A plurality of circular through holes 11 are provided at the front end of the insulating base 1. Each cable assembly 2 is inserted from the rear to the front and fixed in the insulating base 1. The front end of each cable assembly 2 is suspended in the corresponding through hole 11 to be connected to a Fakra plug (not shown). The two secondary snap members 3 are respectively installed on opposite sides of the insulating base 1 for positioning the corresponding cable assemblies 2.
[0025] Referring to Figures 3 to 5 as shown, the cable assembly 2 includes an inner conductor 21, an insulator 22, an outer conductor 23, an insulating sleeve 24, a cable 25 and a riveting ring 26. Among them, the insulator 22 is sleeved outside the inner conductor 21, the outer conductor 23 is sleeved outside the insulator 22, and the insulator 22 can separate the inner conductor 21 and the outer conductor 23. The insulating sleeve 24 is sleeved outside the outer conductor 23. The cable 25 includes a conductive wire core 251, an inner insulating layer 252, a metal braided layer 253 and an outer insulating layer 254 from the inside to the outside in sequence. Among them, the conductive wire core 251 is directly riveted to the rear end of the inner conductor 21, and the metal braided layer 253 is riveted to the rear end of the outer conductor 23 through the riveting ring 26.
[0026] The inner conductor 21 is in the shape of a straight rod extending in the front-rear direction, with a contact end 211 at the front end and a connection end 212 at the rear end. The insulator 22 is in the shape of a cylinder, provided with a central through hole 221 extending in the front-rear direction and a side peripheral wall 222. The inner conductor 21 is inserted into the central through hole 221, and the contact end 211 of the inner conductor 21 protrudes forward from the insulator 22. The connection end 212 is riveted to the conductive wire core 251 of the cable 25.
[0027] The outer conductor 23 is a hollow cylindrical drawing part. The front end of the outer conductor 23 is a docking end 231. The docking end 231 is provided with a number of slits 232 extending forward and backward. The number of slits 232 divides the docking end 231 into multiple pieces circumferentially, so that the docking end 231 of the outer conductor 23 has elasticity in its radial direction. The outer conductor 23 houses the insulator 22. The insulator 22 is completely located inside the outer conductor 23. The front end of the insulator 22 is suspended inside the docking end 231 and protrudes forward.
[0028] The outer conductor 23 further includes a riveting end 233 connected to the cable 25 and an intermediate portion 234 connecting the docking end 231 and the riveting end 233. After the insulator 22 is assembled and inserted into the outer conductor 23, the intermediate portion 234 tightly sleeves outside the insulator 22, and a riveting point 235 is formed by riveting at the intermediate portion 234. The riveting point 235 is embedded into the side peripheral wall 222 of the insulator 22 to fix the insulator 22 and the outer conductor 23 and prevent relative movement between the two. The number of riveting points 235 is 2 to 8, and they form a circle along the circumference on the surface of the outer conductor 23.
[0029] The insulating sleeve 24 is integrally molded outside the intermediate portion 234 of the outer conductor 23. Figure 6 As shown, the riveting point 235 of the outer conductor 23 forms a pit 236 on the outer surface of the outer conductor 23. When the insulating sleeve 24 is injection molded, it will fill into the pit 236, enhancing the bonding between the outer conductor 23 and the insulating sleeve 24. The depth of the pit 236 is 0.1 - 0.4 mm. The insulating sleeve 24 is made of high-strength engineering plastic, and its injection molding wall thickness is 0.2 - 0.6 mm. The insulating sleeve 24 is injection molded to cover the outer conductor 23 and fill into the pit 236 on the surface of the outer conductor 23, which can improve the axial holding force between the insulating sleeve 24 and the outer conductor 23. After testing, the axial holding force between the outer conductor 23 and the insulating sleeve 24 can reach more than 200 N. A step 237 with a higher front and a lower rear is formed between the docking end 231 and the intermediate portion 234 of the outer conductor 23. The insulating sleeve 24 covers the step 237, which can further improve the bonding between the outer conductor 23 and the insulating sleeve 24.
[0030] Combined Figure 7 As shown, the place where the insulating sleeve 24 is sleeved is the place with the largest diameter of the cable assembly 2. When the cable assembly 2 is assembled into the insulating seat 1, the insulating sleeve 24 interferes with the inner wall surface of the through hole 11 of the insulating seat 1 to reliably fix the cable assembly 2 and prevent the cable assembly 2 from rotating in the insulating seat 1. The secondary buckle member 3 is provided with a part extending into the insulating seat 1. The front side surface of the insulating sleeve 24 abuts against the stepped surface (not labeled) in the through hole 11 forward. The rear side wall of the insulating sleeve 24 is abutted forward by the limiting arm 31. The insulating sleeve 24 can be reliably fixed in the insulating seat 1. Since the outer conductor 23 and the insulating sleeve 24 are reliably fixed together in the above manner, the through hole 11 between the outer conductor 23 and the insulating seat 1 can maintain good concentricity, ensuring the stability of the connector 100.
[0031] Although, for purposes of illustration, preferred embodiments of the present utility model have been disclosed, those of ordinary skill in the art will recognize that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the present utility model as disclosed by the appended claims.
Claims
1. A Fakra line end connector, comprising an insulating seat and a cable assembly, wherein the insulating seat is provided with a through hole for fixing the cable assembly, the cable assembly comprises an inner conductor, an insulator, an outer conductor and a cable, the inner conductor is in the shape of a rod extending forward and backward, the insulator is provided with a central through hole and a side wall for accommodating the inner conductor, the outer conductor ring is arranged outside the insulator, and the insulator separates the inner conductor and the outer conductor, characterized in that: The cable assembly further includes an insulating sleeve, which is injection-molded outside the outer conductor. The outer surface of the outer conductor is provided with a plurality of pits, and the insulating sleeve is filled into the pits.
2. The Fakra line end connector according to claim 1, characterized in that: The depth of the pit is 0.1-0.4 mm.
3. The Fakra line end connector according to claim 1, characterized in that: The outer conductor is provided with 2 to 8 pits.
4. The Fakra line end connector according to claim 1, characterized in that: The wall thickness of the insulating sleeve is 0.2-0.6 mm.
5. The Fakra line end connector according to claim 1, characterized in that: A plurality of pits are distributed along the circumference of the outer conductor.
6. The Fakra line end connector according to claim 1, characterized in that: The outer conductor is provided with a plurality of riveting points embedded in the side peripheral wall of the insulator, and the pits are formed at the riveting points on the outer surface of the outer conductor.
7. The Fakra line end connector according to claim 1, characterized in that: The outer conductor includes a butt-jointed end at the front end, a riveted end at the rear end, and a middle portion connecting the butt-jointed end and the riveted end. A step with a higher front and a lower back is formed between the butt-jointed end and the middle portion. The insulating sleeve covers the outside of the middle portion and covers the step.
8. The Fakra wire end connector according to claim 1, characterized in that: The front end of the cable assembly is suspended in the corresponding through hole, and the outer surface of the insulating sleeve is interference-fitted with the inner wall surface of the through hole.
9. The Fakra line end connector according to claim 1, characterized in that: It also includes a pair of secondary clips installed on the left and right opposite sides of the insulating seat for fixing each cable assembly, the secondary clips are provided with a limiting arm extending into the insulating seat, the front side surface of the insulating sleeve is pressed forward against the step surface in the through hole, and the rear side wall of the insulating sleeve is pressed forward by the limiting arm.
10. The Fakra wire end connector according to claim 1, characterized in that: The cable assembly also includes a rivet ring. The cable includes a conductive core, an inner insulating layer, a metal braided layer and an outer insulating layer from the inside to the outside. The conductive core is riveted to the rear end of the inner conductor, and the metal braided layer is riveted to the rear end of the outer conductor through the rivet ring.