MINI FAKRA female head connector

Abstract

The MINI FAKRA female head connector comprises a shell, an insulator and a center pin sleeve, the insulator is in interference fit with the shell, a first center hole is formed in the shell, a protruding block is arranged in the first center hole, and a clamping piece is arranged at the upper end of the shell; a second central hole is formed in the insulator, the aperture of the upper part of the second central hole is larger than that of the middle part, the aperture of the middle part is smaller than that of the lower part, a clamping ring is arranged at the upper end outside the insulator, the outer diameter of the lower part of the insulator is larger than that of the upper part of the first central hole, and a clamping groove is formed in the second central hole; the center pin sleeve is arranged in the second center hole and comprises an electric contact part at the front end, an electric wire fixing part in the middle and an electric wire clamping part at the rear end, and a limiting table matched with the clamping groove is arranged on the outer side of the electric wire fixing part. According to the MINI FAKRA female head connector, the insulator is in interference fit with the shell, so that the installation stability of the insulator is ensured; and through the arrangement of the clamping piece, the insulator can be conveniently clamped, and the concentricity and the electrical performance of the connector are further improved.

Description

Technical Field

[0001] This utility model relates to the field of connector accessories technology, and in particular to a MINI FAKRA female connector. Background Technology

[0002] The MINI FAKRA coaxial connector is becoming increasingly widely used and represents the future trend, featuring miniaturization, high-speed transmission capabilities, and excellent automotive reliability. Currently, most MINI FAKRA female connectors on the market still use stamped coils wrapped with injection-molded insulators as the main body. This connection method suffers from high mold development difficulty and cost, affecting the connector's electrical performance and leading to instability. Therefore, a new type of MINI FAKRA female connector is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide a MINI FAKRA female connector to solve the technical problems of high production cost and unstable signal transmission of existing connectors.

[0004] This utility model discloses a MINI FAKRA female connector, comprising a housing, an insulator, and a center pin sleeve. The insulator is located in the upper part of the housing, and the center pin sleeve is located inside the insulator. The insulator is interference-fitted with the housing. The housing has a first center hole inside, with the upper diameter of the first center hole being larger than the lower diameter. A protrusion abutting against the outer wall of the insulator is provided inside the first center hole. Multiple locking pieces for engaging the insulator are arranged in a circular array at the upper end of the housing, with gaps between adjacent locking pieces. The insulator has a second center hole inside, the second... The upper diameter of the central hole is larger than the middle diameter, and the middle diameter is smaller than the lower diameter. A retaining ring is provided at the upper end of the outside of the insulator. The outer diameter of the lower part of the insulator is larger than the upper diameter of the first central hole. A retaining groove is provided in the second central hole. The central needle sleeve is located in the second central hole. The central needle sleeve includes an electrical contact part at the front end, a wire fixing part in the middle, and a wire clamping part at the rear end. The electrical contact part consists of two arc-shaped connecting pieces with a gap between them. A limiting platform adapted to the retaining groove is provided on the outside of the wire fixing part.

[0005] Preferably, the electrical contact portion encloses the electrical contact portion of the male connector within it.

[0006] Preferably, the retaining ring is located above the retaining piece.

[0007] Preferably, both the protrusion and the limiting platform are inclined blocks, and multiple limiting platforms are provided.

[0008] Preferably, the electrical contact portion is conical, with the connecting piece at its front end extending outward to form a trumpet shape.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The MINI FAKRA female connector includes a housing, an insulator, and a center pin sleeve. The insulator is interference-fitted with the housing. A protrusion is provided in the first center hole of the housing to hold the insulator inside the first center hole, ensuring the stability of the insulator installation. By setting the upper end of the housing as a multi-piece retainer, the inner diameter of the upper end of the housing can be varied according to the outer diameter of the insulator, reducing the damping force of inserting the insulator into the housing, facilitating the insertion of the insulator from the upper end to the lower end of the first center hole, simplifying the installation of the insulator, and further improving the concentricity and electrical performance of the connector. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a schematic diagram of the split structure of an embodiment of the MINI FAKRA female connector of this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of an embodiment of the MINI FAKRA female connector of this utility model;

[0014] Figure 3 This is a front view structural schematic diagram of an embodiment of the MINI FAKRA female connector of this utility model;

[0015] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA.

[0016] In the figure: 1. Outer shell; 11. First central hole; 12. Protrusion; 13. Clip; 14. Gap; 2. Insulator; 21. Second central hole; 22. Snap ring; 23. Snap groove; 3. Central pin sleeve; 31. Electrical contact part; 311. Connecting piece; 32. Wire fixing part; 321. Limiting platform; 33. Wire clamping part. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] like Figure 1-4As shown, this utility model discloses a MINI FAKRA female connector, comprising a housing 1, an insulator 2, and a center pin sleeve 3. The insulator 2 is located in the upper part of the housing 1, and the center pin sleeve 3 is located inside the insulator 2. The insulator 2 and the housing 3 are interference-fitted. The insulator 2 and the center pin sleeve 3 of this MINI FAKRA female connector are both secured inside the housing 1. The insulator 2 is typically made of PTFE material, which is flexible. It is integrated with the housing 3 through an interference fit, unlike the traditional stamping and rolling process. This eliminates the need for mold opening, significantly reducing the technical difficulty of assembling the housing 1 and the insulator 2. It features a simple structure, low cost, and easy assembly.

[0019] Specifically, refer to Figure 1-4 The MINI FAKRA female connector has a first central hole 11 inside its outer shell 1. The upper diameter of the first central hole 11 is larger than the lower diameter. Inside the first central hole 11, there is a protrusion 12 that abuts against the outer wall of the insulator. The upper end of the outer shell 1 has a ring array of multiple locking pieces 13 for locking the insulator, with a gap 14 between adjacent locking pieces 13. The protrusion 12 is an inclined block, with its lower end tilted towards the first central hole 11, used to lock the insulator 2 inside the first central hole 11, ensuring the stability of the insulator installation. In addition, the upper end of the outer shell 1 has multiple locking pieces 13, with a gap 14 between adjacent locking pieces 13. That is, the inner diameter of the upper end of the outer shell 1 can be changed according to the outer diameter of the insulator 2, making it easy for the insulator 2 to be locked from the upper end to the lower end of the first central hole 11 until it is locked.

[0020] Specifically, refer to Figure 1-4 The insulator 2 of the MINI FAKRA female connector has a second central hole 21 inside. The upper diameter of the second central hole 21 is larger than the middle diameter, and the middle diameter is smaller than the lower diameter. A retaining ring 22 is provided at the upper end of the insulator's exterior. The outer diameter of the lower part of the insulator is larger than the upper diameter of the first central hole. A retaining groove 23 is provided inside the second central hole 21. The retaining ring 22 is located above the retaining piece 13. The exterior of the insulator 2 is stepped columnar, with the lower outer diameter larger than the middle outer diameter, the middle outer diameter larger than the upper outer diameter, and the lower outer diameter of the insulator 2 slightly larger than the inner diameter of the first central hole 11. This ensures that the interior of the outer shell 1 and the exterior of the insulator 2 can be interference-fitted, preventing the insulator from coming off. The retaining ring 22 at the upper end of the insulator limits the installation position of the insulator, ensuring installation accuracy. The retaining groove 23 in the second central hole 21 is used to hold the center pin sleeve 3 in place.

[0021] Specifically, refer to Figure 1-4The center pin sleeve 3 of the MINI FAKRA female connector is located inside the second center hole 21. The center pin sleeve 3 includes an electrical contact part 31 at the front end, a wire fixing part 32 in the middle, and a wire clamping part 33 at the rear end. The electrical contact part 31 consists of two arc-shaped connecting pieces 311, with a gap 312 between the two connecting pieces 311. The outer side of the wire fixing part 32 is provided with a limiting platform 321 that adapts to the slot 23. The electrical contact part 31 is conical, and the connecting piece 311 at its front end extends outward to form a flared shape. The center pin sleeve 3 includes an electrical contact part 31, a wire fixing part 32, and a wire clamping part 33. The electrical contact part 31 is connected to the center pin of the male pin connector, conducts electricity, and transmits signals. The wire fixing part 32 is used to wrap the wire. The wire clamping part 33 is used to clamp the wire to prevent the wire from coming out and affecting signal transmission. By setting the connecting piece 311 at the front end of the electrical contact part 31 to be an outwardly extending horn shape, it is convenient to insert the center pin. The electrical contact part 31 wraps the electrical contact part of the male center pin inside it for signal transmission. A limiting platform 321 adapted to the slot 23 is provided on the outside of the wire fixing part 32. There are multiple limiting platforms 321, which are located at the upper and lower parts of the wire fixing part 32, and they are all inclined blocks. The upper and lower inclined directions are opposite and they are not on the same plane, which further ensures the stability of the connection of the center pin sleeve 3. The center needle sleeve 3 is made by one-piece stamping process, which can stamp multiple center sleeves at the same time, reducing the development cost of automated production equipment, improving production efficiency, reducing the production defect rate, and also reducing the cost of parts.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A MINI FAKRA female connector, comprising a housing, an insulator, and a center pin sleeve, wherein the insulator is disposed in the upper part of the housing, and the center pin sleeve is disposed inside the insulator, characterized in that: The insulator is interference-fitted with the outer shell. The outer shell has a first central hole inside, with the upper diameter of the first central hole being larger than the lower diameter. A protrusion abutting against the outer wall of the insulator is provided inside the first central hole. Multiple clips for engaging the insulator are arranged in a ring at the upper end of the outer shell, with gaps between adjacent clips. The insulator has a second central hole inside, with the upper diameter of the second central hole being larger than the middle diameter, and the middle diameter being smaller than the lower diameter. A retaining ring is provided at the upper end of the outer shell of the insulator. The outer diameter of the lower part of the insulator is larger than the upper diameter of the first central hole. A groove is provided inside the second central hole. The central needle sleeve is disposed in the second central hole. The central needle sleeve includes an electrical contact part at the front end, a wire fixing part in the middle, and a wire clamping part at the rear end. The electrical contact part consists of two arc-shaped connecting pieces with a gap between them. A limiting platform adapted to the groove is provided on the outer side of the wire fixing part.

2. The MINI FAKRA female connector as described in claim 1, characterized in that, The electrical contact portion encloses the electrical contact portion of the male connector within it.

3. The MINI FAKRA female connector as described in claim 1, characterized in that, The retaining ring is located above the retaining piece.

4. The MINI FAKRA female connector as described in claim 1, characterized in that, Both the protrusion and the limiting platform are inclined blocks, and there are multiple limiting platforms.

5. The MINI FAKRA female connector as described in claim 1, characterized in that, The electrical contact part is conical, and the connecting piece at its front end extends outward to form a trumpet shape.

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