Mini Fakra line end connector

Abstract

The utility model discloses a Mini Fakra line end connector. The Mini Fakra line end connector comprises a plug assembly and a socket assembly which are connected in a pluggable mode. The plug assembly comprises a first shell and a first terminal assembly fixedly arranged in the first shell; the socket assembly comprises a second shell and a second terminal assembly fixedly arranged in the second shell, a buckling structure is arranged at the top of the plug assembly, and a supporting part of the buckling structure is integrally formed at the top of the first shell and is close to the wiring end of the plug assembly. Compared with the prior art, a larger movement gap does not need to be reserved between the barb and the non-return surface, the plugging distance between the plug assembly and the socket assembly can be smaller, and the size of the barb can be larger, so that the connection stability of the plug assembly and the socket assembly is effectively improved; moreover, the buckling gap is reduced, the relative movement of the male terminal and the female terminal is reduced, the wear is reduced, the service life of the connector is prolonged, and the impedance matching performance and the high-frequency and high-speed signal transmission performance are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric connectors, and in particular relates to a MiniFakra line end connector. Background Art

[0002] As an indispensable component in modern vehicle electronic systems, MiniFakra line-end connectors carry the important task of high-speed data transmission. With the rapid development of in-vehicle infotainment systems, advanced driver assistance systems (ADAS) and vehicle-to-everything (V2X) technologies, the performance requirements for MiniFakra connectors are becoming increasingly stringent. The traditional MiniFakra connector design is based on a smaller version of the FAKRA connector, and its core features are compact size and high frequency compatibility. However, in actual applications, as MiniFakra connectors are increasingly widely used in scenarios with higher frequency requirements, the requirements for impedance matching are also becoming higher and higher, and the traditional MiniFakra line-end connector structure is becoming increasingly difficult to meet the performance requirements under the new situation.

[0003] like Fig. 9 As shown, the buckle design of the traditional MiniFakra line-end connector is mostly similar to a MiniFakra connector with publication number CN117613588A, whose elastic arm support point is at the butt end of the connector, and the press-unlock position is close to the wiring end of the connector. This design requires a large gap to be reserved when the male and female buckles are matched to ensure that the buckles can be buckled in place during the assembly process to avoid damage to the buckles. Moreover, this gap will be retained after buckling. In a vibrating environment, such as in a car, due to the relative movement between the male and female connectors, the male and female connectors often move back and forth frequently after buckling, and the terminal contact points are subjected to additional friction, which aggravates the wear of the terminal contact points and seriously shortens the service life of the connector. Long-term operation will also lead to an increase in contact resistance and even contact failure. Moreover, a larger gap also means an increase in the cavity inside the shielding structure, which means a decrease in impedance matching for high-frequency signal transmission, which may cause damage to signal integrity and affect the reliability and accuracy of data transmission. Utility Model Content

[0004] The utility model aims to provide a MiniFakra line end connector which has a simple structure, a low price, is easy to unlock and has a small gap after mating, so as to solve the shortcomings of the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A MiniFakra line-end connector, comprising a plug assembly and a socket assembly that can be plugged and unplugged; the plug assembly comprises a first shell and a first terminal assembly fixed in the first shell; the socket assembly comprises a second shell and a second terminal assembly fixed in the second shell; a snap-fit ​​structure is provided on the top of the plug assembly, the snap-fit ​​structure comprises a support portion fixed to the top of the first shell and close to one side of the wiring terminal of the plug assembly, an elastic arm integrally connected to the support portion and extending toward the plug-in end of the plug assembly, and a barb arranged on the free end of the elastic arm; correspondingly, a guide groove for inserting the elastic arm is provided on the top of the socket assembly, and a check platform for snap-fitting with the barb is provided above the guide groove.

[0007] Furthermore, a protective platform abutting against the inner bottom surface of the guide groove is provided in front of the undercut.

[0008] Furthermore, a slide groove is provided below the elastic arm, and an anti-misinsertion lock capable of interfering with the movable path of the elastic arm is slidably installed in the slide groove.

[0009] Furthermore, the anti-misinsertion lock includes a sliding body, a limiting portion arranged on the sliding body and capable of cooperating with a limiting platform preset on the upper part of the support part to prevent it from slipping out of the slide groove, and a positioning portion capable of cooperating with a positioning hole preset on the side of the support part to position the sliding position of the anti-misinsertion lock.

[0010] Furthermore, the positioning portion is an arc-shaped protrusion arranged on both sides of the sliding body, and correspondingly, the positioning hole includes a locking hole and an unlocking hole arranged one in front and one in the back with a spacing.

[0011] Furthermore, a pressing portion protruding upwards is provided in the middle of the elastic arm for facilitating unlocking by pressing.

[0012] Furthermore, a buckle groove communicating with the inner cavity of the first shell is formed on the outer side wall of the first shell, and a retaining member for fixing the first terminal assembly is buckled and mounted on the buckle groove.

[0013] Compared with the prior art, the MiniFakra line end connector provided by the utility model has the following beneficial technical effects:

[0014] 1. Improve connection stability: The reduced snap-fit ​​gap effectively avoids the relative movement of the male and female terminals, significantly improving the stability and reliability of the connection.

[0015] 2. Reduce wear: Due to the reduction of relative movement, the wear of the terminal contact points is significantly reduced, extending the service life of the connector.

[0016] 3. Optimize impedance matching: By reducing the gap and optimizing the shielding structure, the impedance matching is improved, which is conducive to high-quality signal transmission, especially in high-frequency and high-speed data transmission scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a plug assembly and a socket assembly of a MiniFakra line-end connector provided in Embodiment 1 of the utility model when plugged in;

[0019] Figure 2 A schematic diagram of the structure of a MiniFakra line-end connector provided in Embodiment 1 of the present utility model when the plug assembly and the socket assembly are separated;

[0020] Figure 3 A schematic diagram of the structure of a plug assembly in a MiniFakra line-end connector provided in Embodiment 1 of the present utility model;

[0021] Figure 4 An exploded view of a plug assembly in a MiniFakra line-end connector provided in Embodiment 1 of the present utility model;

[0022] Figure 5 A schematic diagram of the structure of a socket assembly in a MiniFakra line-end connector provided in Embodiment 1 of the present utility model;

[0023] Figure 6 An exploded view of a socket assembly in a MiniFakra line-end connector provided in Embodiment 1 of the present utility model;

[0024] Figure 7 A cross-sectional view of a MiniFakra line end connector provided in Embodiment 1 of the present utility model;

[0025] Figure 8 A cross-sectional view of a MiniFakra wire end connector provided in Embodiment 1 of the present utility model when a pressing portion is pressed;

[0026] Fig. 9 It is a cross-sectional view of the prior art.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1-first shell, 101-buckle groove, 2-first terminal assembly, 201-annular groove, 3-coaxial cable, 4-retaining member, 401 annular protrusion, 5-buckle mechanism, 501-support portion, 502-elastic arm, 503-hook, 504-protective platform, 505-pressing portion, 506-limiting platform, 507-slide groove, 508-locking hole, 509-unlocking hole, 6-second shell, 601-guide groove, 602-check platform, 603-inner bottom surface, 7-second terminal assembly, 8-anti-misinsertion lock, 801-sliding body, 802-operating portion, 803-limiting portion, 804-positioning portion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a MiniFakra line end connector, including a plug assembly and a socket assembly, wherein the plug assembly and the socket assembly are plug-matched. Specifically:

[0031] like Figure 3 and Figure 4 As shown, the plug assembly includes a first shell 1, a first terminal assembly 2 and a snap-fit ​​mechanism 5, wherein a first installation chamber is provided in the first shell 1, the first terminal assembly 2 is installed in the first installation chamber, a snap groove 101 connected to the first installation chamber inside the first shell 1 is opened on the outer wall of the first shell 1, a retaining member 4 is snap-fitted and installed on the snap groove 101, and an annular protrusion 401 is provided on the retaining member 4, and the annular protrusion 401 can cooperate with the annular groove 201 on the outer conductor of the first terminal assembly 2, so as to stably fix the first terminal assembly 2 in the first shell 1, and the tail end of the first terminal assembly 2 is connected to the coaxial cable 3 to realize signal transmission.

[0032] The snap-fit ​​structure is arranged at the top of the plug assembly, and includes a support portion 501, an elastic arm 502, a barb 503 and a protective platform 504. In order to reduce the gap between the plug assembly and the socket assembly after being plugged in, as a preferred embodiment, the support portion 501 is integrally formed at the top of the first shell 1 and is close to the connection end of the plug assembly (i.e., close to the end of the coaxial cable 3); the elastic arm 502 is integrally connected to the support portion 501 and extends toward the plug-in end of the plug assembly (i.e., the end plugged into the socket assembly); the barb 503 is formed on the free end of the elastic arm 502; in addition, a pressing portion 505 protruding upward is also provided in the middle of the elastic arm 502, and the barb 503 can be moved downward by pressing the pressing portion 505, so as to facilitate the quick release of the clamping state and facilitate the user's plug-in and unplug operation.

[0033] Correspondingly, such as Figure 5 and Figure 6 As shown, in this embodiment, the socket assembly includes a second shell 6 and a second terminal assembly 7. The second shell 6 is provided with a second installation chamber. The second terminal assembly 7 is fixed in the second shell 6 for transmitting signals. A guide groove 601 is provided at the top of the socket assembly for the elastic arm 502 to be inserted. The guide groove 601 can guide the elastic arm 502 in the axial direction and limit the circumferential position. A check stand 602 is provided above the guide groove 601 to match the hook 503. Figure 7 As shown, during the connection process, the elastic arm 502 of the plug assembly will slide along the guide groove 601 of the female seat. When the plug assembly and the socket assembly are completely plugged in, the barb 503 will pass through the check platform 602 and abut and lock with the check surface of the check platform 602, thereby fixing the relative position between the plug assembly and the socket assembly, preventing the plug assembly from detaching from the socket assembly, and forming a stable electrical connection.

[0034] Furthermore, a protective platform 504 is provided in front of the inverted hook 503, and the protective platform 504 is spaced a certain distance from the inverted hook 503 to ensure that the inverted hook 503 can float normally. The outer end surface of the protective platform 504 abuts against the inner bottom surface 603 of the guide groove 601, thereby limiting the insertion depth of the plug assembly, and at the same time, it can also effectively avoid the plug assembly and the socket assembly from being stuck due to oblique insertion during the mutual mating process, thereby preventing the buckle from being damaged.

[0035] In addition, in order to prevent the plug assembly from being separated from the socket assembly due to the accidental touching of the pressing portion 505, as a preferred embodiment, a slide groove 507 is provided below the elastic arm 502, and an anti-misinsertion lock 8 capable of interfering with and allowing the moving path of the elastic arm 502 is slidably installed in the slide groove 507. The anti-misinsertion lock 8 includes a sliding body 801 and an operating portion 802, a limiting portion 803, and a positioning portion 804 arranged on the sliding body 801. Among them, the operating portion 802 is integrally arranged at the top of the sliding body 801 to facilitate pushing the sliding body 801 to slide forward and backward in the slide groove 507; the limiting portion 803 is located at the upper part of the sliding body 801, and can cooperate with the limiting platform 506 preset on the support portion 501 to limit the anti-misinsertion lock 8 to prevent it from slipping out of the slide groove 507. The positioning portion 804 is an arc-shaped protrusion arranged on both sides of the sliding body 801. Correspondingly, positioning holes are opened on the left and right side walls of the support portion 501. The positioning holes on each side include at least a locking hole 508 and an unlocking hole 509 arranged at intervals in front and behind. The sliding position of the anti-misinsertion lock 8 is positioned by cooperating with the positioning portion 804.

[0036] When the plug assembly and the socket assembly are connected, it is only necessary to push the sliding body 801 forward through the operating part 802, so that the sliding body 801 slides from the side close to the support part 501 to the side close to the hook 503 (so that the sliding body 801 is stuck in the movable path of the elastic arm 502), and the positioning part 804 is engaged with the locking hole 508. By limiting the floating of the elastic arm 502 to prevent the hook 503 from disengaging from the check platform 602, it is possible to avoid accidental disconnection of the plug assembly and the socket assembly due to vibration or accidental touch, thereby ensuring the mechanical stability of the connector.

[0037] like Figure 7 and Figure 8As shown, when it is necessary to release the connection between the plug assembly and the socket assembly, it is only necessary to first push the anti-misinsertion lock 8 to the side away from the hook 503 so that the positioning portion 804 is engaged in the unlocking hole 509, and then press the pressing portion 505 to pull the plug assembly out of the socket assembly. In addition, after the pressing portion 505 is pressed, the elastic arm 502 will undergo counterclockwise bending elastic deformation (that is, the barb 503 will move obliquely downward to the side away from the non-return surface), and the barb 503 will not interfere with the non-return surface of the non-return platform 602 like the traditional snap-fit ​​structure. Therefore, compared with the traditional MiniFakra wire end connector, the design of integrally forming the support portion 501 close to the wiring terminal adopted in the utility model does not require a large movement gap to be reserved between the barb 503 and the non-return surface. The plug-in spacing between the plug assembly and the socket assembly can be made smaller, and the size of the barb 503 can be made larger, which not only effectively improves the connection stability between the plug assembly and the socket assembly, but also reduces the snap-fit ​​gap, reduces the relative movement of the male and female terminals, reduces wear, extends the service life of the connector, and further improves the impedance matching and high-frequency and high-speed signal transmission performance.

[0038] The above-mentioned embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A MiniFakra line end connector, characterized in that: include: A plug assembly and a socket assembly that can be plugged and connected; the plug assembly comprises a first housing (1) and a first terminal assembly (2) fixedly arranged in the first housing (1); the socket assembly comprises a second housing (6) and a second terminal assembly (7) fixedly arranged in the second housing (6); A snap-fit ​​structure is provided at the top of the plug assembly, and the snap-fit ​​structure comprises a support portion (501) fixedly arranged at the top of the first shell (1) and close to the wiring terminal of the plug assembly, an elastic arm (502) integrally connected to the support portion (501) and extending toward the plug-in end of the plug assembly, and a barb (503) arranged on the free end of the elastic arm (502); correspondingly, a guide groove (601) is provided at the top of the socket assembly for the elastic arm (502) to be inserted, and a check platform (602) is provided above the guide groove (601) for snap-fitting with the barb (503).

2. The MiniFakra line end connector according to claim 1, characterized in that: A protective platform (504) is provided in front of the inverted hook (503) and is in contact with the inner bottom surface (603) of the guide groove (601).

3. The MiniFakra line end connector according to claim 1, characterized in that: A sliding groove (507) is provided below the elastic arm (502), and an anti-misinsertion lock (8) capable of interfering with the moving path of the elastic arm (502) is slidably installed in the sliding groove (507).

4. The MiniFakra line end connector according to claim 3, characterized in that: The anti-misinsertion lock (8) comprises a sliding body (801), a limiting portion (803) arranged on the sliding body (801) and capable of cooperating with a limiting platform (506) preset on the upper part of the support part (501) to prevent it from slipping out of the slide groove (507), and a positioning portion (804) capable of cooperating with a positioning hole preset on the side of the support part (501) to position the sliding position of the anti-misinsertion lock (8).

5. The MiniFakra line end connector according to claim 4, characterized in that: The positioning portion (804) is an arc-shaped protrusion arranged on both sides of the sliding body (801), and correspondingly, the positioning hole includes a locking hole (508) and an unlocking hole (509) arranged one in front and one in the back with a spacing.

6. The MiniFakra line end connector according to claim 1, characterized in that: The middle part of the elastic arm (502) is also provided with a pressing portion (505) protruding upwards for facilitating unlocking by pressing.

7. The MiniFakra line end connector according to claim 1, characterized in that: A buckle groove (101) communicating with the internal cavity of the first shell (1) is provided on the outer side wall of the first shell (1), and a retaining member (4) for fixing the first terminal assembly (2) is buckled and mounted on the buckle groove (101).

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