CN117096678A

CN117096678A - Electric connector

Info

Publication number: CN117096678A
Application number: CN202210525104.9A
Authority: CN
Inventors: 赵霞; 朱建矿; 杨小高
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2022-05-14
Filing date: 2022-05-14
Publication date: 2023-11-21
Also published as: TW202406248A

Abstract

The utility model discloses an electric connector, which comprises a first body, a first shielding piece and a pair of terminals, wherein the first shielding piece is coated outside the first body; the first body is provided with a concave part which is concave from the outer peripheral surface thereof near the front end surface thereof, the concave part penetrates the front end surface of the first body forwards, the inner wall surface of the first shielding piece is provided with an additional part near the front end surface thereof, and the additional part is accommodated in the concave part. The additional portion is closer to the terminals, and the differential impedance between the terminals can be adjusted.

Description

Electric connector

[ field of technology ]

The present utility model relates to an electrical connector, and more particularly, to an electrical connector for transmitting ethernet signals for vehicles.

[ background Art ]

Referring to patent CN214542783U, the prior art discloses an Ethernet automotive connector, which comprises a male connector and a female connector; the terminal position lock is in a cross shape with two sides bent and the middle part protruding inwards, and the two sides of the bend are provided with inverted hooks; the terminal position lock is matched and inserted with the cross groove, and when the front shielding shell far matched and inserted end is sleeved outside the rear shielding shell, the clamping position is clamped with the boss; the reverse hook is locked into the first-stage clamping groove, the front shielding shell and the shell are not locked, the reverse hook is locked into the second-stage clamping groove, and the front shielding shell and the shell are locked; the metal baffle is inserted into the inner cavity of the die-casting shielding shell along the groove and is arranged at the tail end of the inner rubber core; the spring plate is clamped in a spring plate groove of the inner cavity wall of the shell corresponding to the matched plug; the top buckle of the inner cavity wall of the shell is fixed against one end of the inclined boss. The high frequency performance of the connector is to be optimized.

There is a need for an improved electrical connector.

[ utility model ]

The technical problems to be solved by the utility model are as follows: an electrical connector is provided with a shield having an attachment portion capable of adjusting differential impedance.

In order to solve the problems, the utility model adopts the following technical scheme:

an electric connector comprises a first body, a first shielding piece coated outside the first body and a pair of terminals positioned in the first body, wherein the first body is provided with two terminal holes penetrating forward through the front end surface of the first body, and the terminals are accommodated in the corresponding terminal holes; the first body is provided with a concave part which is concave from the outer peripheral surface thereof near the front end surface thereof, the concave part penetrates the front end surface of the first body forwards, the inner wall surface of the first shielding piece is provided with an additional part near the front end surface thereof, and the additional part is accommodated in the concave part.

Compared with the prior art, the utility model has the following beneficial effects: the additional part is accommodated in the concave part, so that the shielding piece is closer to the terminal, and the differential impedance of the terminal is adjusted.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector of the present utility model.

Fig. 2 is an exploded view of a portion of the structure of the electrical connector shown in fig. 1.

Fig. 3 is a perspective view of the structure of fig. 1 with the structure of fig. 2 removed.

Fig. 4 is an exploded view of the first shield, first body and second shield of fig. 3.

Fig. 5 is a perspective view of the cable assembly and strain relief of fig. 2.

Fig. 6 is a perspective view of the first shield of fig. 3.

Fig. 7 is a further exploded view of fig. 5.

Fig. 8 is a cross-sectional view of the electrical connector of fig. 1 taken along the dashed line A-A.

Fig. 9 is a perspective view of a second embodiment of the electrical connector of the present utility model.

Fig. 10 is a perspective view of the first shield in the second embodiment.

Fig. 11 is a cross-sectional view of the electrical connector of fig. 10 taken along the dashed line B-B.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

[ detailed description ] of the utility model

Referring to fig. 1-8, an electrical connector 100 is disclosed for high speed automotive network transmission, requiring high shielding performance and high frequency performance. The electrical connector 100 includes a first body 10, a first shielding member 40 wrapped outside the first body 10, a pair of terminals 30 located in the first body 10, a cable assembly 70 connected to the rear ends of the terminals 30, a second shielding member 50 and a third shielding member 60 located behind the first shielding member 40, the first, second and third shielding members are sequentially connected end to end, the third shielding member 60 is fixed on the periphery of the cable assembly 70, and a stress relieving member 80 is sleeved on the cable assembly 70. The electrical connector 100 further includes a second body 20 wrapped around the outside of the above assembly, a connector positioning device 90 and a terminal positioning device 99 mounted on the second body 20. Hereinafter, each structure will be described in detail.

Referring to fig. 4 to 5, the first body 10 is formed by injection molding an insulating material, the first body 10 includes a front end surface 101, a pair of terminal holes 102 penetrating forward through the front end surface 101, and a recess 11 adjacent to the front end surface, the recess 11 is formed by recessing from the outer peripheral surface of the first body 10 and penetrating forward through the front end surface 101 of the first body, and an abutment surface 111 is formed at the rear end of the recess 11. The outer peripheral surface of the first body 10 is further provided with an elongated groove 103, the elongated groove 103 is located behind the recess 11, the elongated groove 103 is flush with the recess 11, and the abutment surface 111 is formed at a position where the elongated groove 103 is not provided.

The terminals 30 are received in the terminal holes 102 and do not extend forward beyond the terminal holes 102 nor rearward beyond the terminal holes 102 (best shown in fig. 8). The terminal includes a contact portion 31 at a front end, a crimp portion 33 at a rear end, and a holding portion 32 connecting the contact portion 31 and the crimp portion 33.

The first shield 40 is shown as a tubular structure that encloses the outside of the first body 10. The front end surface of the first shielding member 40 extends forward beyond the front end surface 101 of the first body, the first shielding member 40 is provided with an elastic arm 41, and the elastic arm 41 can elastically deform into the long groove 103 when deforming inwards. In this embodiment, the peripheral surfaces of the first shielding member 40 are provided with elastic arms 41, and the ends of the elastic arms 41 are not connected to the main body of the first shielding member 40. The inner wall surface of the first shield member 40 is provided with an additional portion 42 adjacent to the front end surface thereof, and the additional portion 42 is accommodated in the recess 11 and abuts rearward against the abutment surface 111. The resilient arm 41 is shown located behind the attachment portion 42. The additional portion 42 is formed at opposite sides of the first shielding member 40 or the additional portion 42 surrounds an inner wall surface of the tubular structure of the first shielding member 40. Referring to fig. 6, in the first embodiment of the present utility model, the additional portion 42 is formed by bending back from the front end surface of the first shielding member 40, and is located at two opposite sides of the first shielding member 40. Referring to fig. 9-11, a second embodiment of the electrical connector 200 of the present utility model has a first shield 40', wherein the additional portion 42' is formed by thickening the inner wall surface of the first shield 40', and the thickened portion surrounds the inner wall surface of the tubular structure of the first shield 40. Both embodiments may bring the additional portion closer to the contact portion of the terminal (see fig. 8 and 11) to adjust the differential impedance of the terminal 30.

Referring to fig. 4-7, the cable assembly 70 is wrapped by the connection terminal 30 and the third shielding member 60, the second shielding member 50 is connected with the first shielding member 40 and the third shielding member 60 end to end, and the overlapping connection parts of the first shielding member, the second shielding member and the third shielding member are all spot-welded. The cable assembly 70 includes two cables 71 extending in parallel, each having a bare wire core 72, the wire core 72 being crimped with the crimp 33 of the terminal 30. The third shield 60 is provided with a crimp portion 61 at the corresponding two cables 71, which substantially surrounds each cable (best shown in fig. 5), the crimp portion 61 comprises a slit 612 and a V-shaped recess 611 formed by inward crimping, the slit 612 is also rolled into a V-shape by inward crimping, and the V-shaped recess 611 and the slit 612 are located between the two cables and on the upper and lower sides, respectively. The second shield 50 is wrapped back around the crimp portion 61 of the third shield, and the connection seam of the second shield 50 corresponds to the V-shaped recess 611 of the third shield to increase the shielding performance of the electrical connector. The second shield 50 wraps forward the rear half of the first body 10 and is wrapped by the first shield 40, as shown with reference to fig. 2 and 8.

The stress relief piece 80 is sleeved on the cable assembly 70 from back to front, and the front end of the stress relief piece is provided with a plurality of convex rings 81; the second body 20 includes a cylindrical portion 23 at a rear end, the stress relief member is assembled forward in the cylindrical portion 23, and the collar 81 interferes with an inner wall surface of the cylindrical portion, as shown in fig. 8.

The first body 10, the first, the second and the third shielding members 40, 50, 60 are assembled and then accommodated in the second body 20, and the strain relief member 80 and the cable assembly 70 are partially exposed.

The second body 20 includes a docking cavity 210 penetrating forward and a docking ring 21 surrounding the docking cavity, and the outer surface of the docking ring is provided with latch arms 211 with cantilever structures and foolproof protruding strips 212 arranged at uneven intervals. The additional portion 42 is located in the docking cavity 210, and the front end surface of the first shielding member 40 does not exceed the second body 20. The distance from the front end surface of the first shield 40 to the front end surface 101 of the first body is greater than the distance from the front end surface of the first shield to the front end surface of the second body. The second main body 20 further comprises a square middle portion 22 and a cylinder portion 23, a mounting groove 220 and a cross beam 221 are formed in the top of the middle portion 22, the latch arms 211 extend backwards into the space above the mounting groove 220, the cross beam 221 can prevent the latch arms 211 from rotating upwards excessively, and two sides of the top of the middle portion 22 are of an L-shaped structure.

The electrical connector 100 includes a connector positioning device 90 mounted above the second body and a terminal positioning device 80 below the second body. The connector positioning device 90 is mounted in the mounting groove 220 from the back to the front, and the latch arm 211 may abut against the connector positioning device 90, specifically, the front end of the cross plate 91 provided on the connector positioning device 90. Each side of the middle portion 22 is provided with two fastening holes 222 for fastening the connector positioning device 90, when the connector positioning device 90 is fastened in the fastening hole 222 near the rear end, the latch arms 211 do not abut against the transverse plate 91, and the latch arms 211 can rotate downwards in an unlocked state; when the connector positioning device 90 is snapped into the front snap hole 222, the latch arm 211 abuts the cross plate 91 downward, and the latch arm 211 is locked and cannot rotate downward.

The electrical connector 100 includes a terminal positioning device 99 mounted under the second body, the terminal positioning device 99 being mounted on the bottom of the second body 20 from bottom to top.

The assembly sequence of the present utility model is that the terminal 30 is crimped with the cable assembly 70, the third shield 60 is installed, assembled together into the first body 10, the second shield 50, the first shield 40, and the stress relief 80 are installed in sequence, assembled together into the second body 20, and finally the connector positioning device 90 and the terminal positioning device 99 are installed into the second body.

In summary, the above description is only a preferred embodiment of the present utility model, and should not be taken as limiting the scope of the utility model, i.e. all simple and equivalent changes and modifications that are defined by the claims and the specification shall fall within the scope of the utility model covered by the patent claims.

Claims

1. An electric connector, its includes first body, cladding is in first shield spare outside the first body and be located a pair of terminal in the first body, first body is equipped with two terminal holes that run through its preceding terminal surface forward, the terminal is acceptd in corresponding terminal hole, its characterized in that: the first body is provided with a concave part which is concave from the outer peripheral surface thereof near the front end surface thereof, the concave part penetrates the front end surface of the first body forwards, the inner wall surface of the first shielding piece is provided with an additional part near the front end surface thereof, and the additional part is accommodated in the concave part.

2. The electrical connector of claim 1, wherein: the additional portion is formed by bending back from the front end face of the first shielding member.

3. The electrical connector of claim 1, wherein: the additional part is formed by thickening the inner wall surface of the first shielding piece.

4. The electrical connector of claim 1, wherein: the first shielding member is of a tubular structure, and the additional portions are formed on two opposite sides of the first shielding member or around an inner wall surface of the tubular structure of the first shielding member.

5. The electrical connector of claim 1, wherein: the front end face of the first shielding piece is protruded forward beyond the front end face of the first body, the first shielding piece is provided with a plurality of elastic arms, and the elastic arms are located behind the additional portion.

6. The electrical connector of claim 5, wherein: the rear end of the concave part is provided with an abutting surface, and the additional part is in backward abutting contact with the abutting surface.

7. The electrical connector of claim 5, wherein: the electrical connector includes a second body including a front face and a forwardly opening mating cavity, the front face of the second body forwardly exceeding the front face of the first shield.

8. The electrical connector of claim 7, wherein: the distance between the front end face of the first shielding piece and the front end face of the first body is larger than the distance between the front end face of the first shielding piece and the front end face of the second body.

9. The electrical connector of claim 6, wherein: the top of the second body comprises an elastic locking arm and a mounting groove, wherein the elastic locking arm extends backwards from the front end face of the second body, the mounting groove is arranged behind the elastic locking arm, the electric connector comprises a connector positioning device which is mounted in the mounting groove, and the elastic locking arm can be abutted downwards to the connector positioning device.

10. The electrical connector of claim 9, wherein: the second body includes a cross member located above the mounting slot, the cross member preventing the resilient latch arm from rotating excessively upward.