Wire end connector and connector assembly

Abstract

The present invention discloses a wire end connector and a connector assembly, which relate to the field of connector technology, and include: a first insulator, wherein a first electrical connection part, a second electrical connection part and a third electrical connection part are sequentially arranged inside the first insulator along its length direction, the first electrical connection part, the second electrical connection part and the third electrical connection part are respectively connected to a first cable, a second cable and a third cable, one of the first electrical connection part, the second electrical connection part and the third electrical connection part is a power connection part, and at least one of the first electrical connection part, the second electrical connection part and the third electrical connection part is a signal connection part; a downwardly extending plug-in part is provided at the bottom of the first insulator, and a mounting groove is provided on the plug-in part; the wire end connector integrates the first electrical connection part, the second electrical connection part and the third electrical connection part, including a power connection part and a signal connection part, to save space.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and more specifically, relates to a wire end connector and a connector assembly. Background Art

[0002] Currently, high-speed connectors typically only have one terminal block and electrical connection. However, when multiple interfaces are required, a large number of connectors are required, which occupies a large space and is not conducive to product layout. Therefore, it is desirable to develop a compact end-of-line connector that can connect multiple electrical connections. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a wire end connector and a connector assembly, wherein the wire end connector integrates a first electrical connection part, a second electrical connection part and a third electrical connection part, including a power connection part and a signal connection part, thereby saving space.

[0004] In order to achieve the above object, the present invention provides a line end connector, which includes:

[0005] a first insulator, wherein a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion are sequentially provided inside the first insulator along its length, the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being connected to a first cable, a second cable, and a third cable, respectively, one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a power connection portion, and at least one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a signal connection portion;

[0006] The bottom of the first insulator is provided with an inserting portion, the inserting portion is provided with a mounting groove, and the mounting groove is used for installing a lock buckle.

[0007] Optionally, the front plug-in portion and the rear plug-in portion have different lengths.

[0008] Optionally, the plug-in portion includes a front plug-in portion and a rear plug-in portion, and the front plug-in portion and the rear plug-in portion are respectively located on the front side and the rear side of the first insulator.

[0009] Optionally, the front plug-in portion includes a first front plug-in portion and a second front plug-in portion, the first front plug-in portion is located in front of the first electrical connection portion and the second electrical connection portion, and the second front plug-in portion is located in front of the third electrical connection portion; the rear plug-in portion includes a first rear plug-in portion and a second rear plug-in portion, the first rear plug-in portion is located in rear of the first electrical connection portion and the second electrical connection portion, and the second rear plug-in portion is located in rear of the third electrical connection portion, and the second front plug-in portion and the second rear plug-in portion have different lengths.

[0010] Optionally, the first electrical connection portion and the second electrical connection portion are connected, a first gap is provided between the second electrical connection portion and the third electrical connection portion adjacent thereto, there are at least two third electrical connection portions, and a second gap is provided between adjacent third electrical connection portions.

[0011] Optionally, a second front plug-in portion and a second rear plug-in portion are respectively provided on the front and rear sides of each of the third electrical connecting portions, a third gap is provided between adjacent second front plug-in portions, and a fourth gap is provided between adjacent second rear plug-in portions.

[0012] Optionally, a first positioning portion extending downward is provided at the bottom of the first insulator.

[0013] Optionally, a protrusion is provided on the front end face and / or the rear end face of the first insulator, the first front plug-in portion and the first rear plug-in portion are located at the bottom of the protrusion, and the first positioning portion is located at the bottom of the protrusion.

[0014] Optionally, the plug-in portion is plate-shaped, and the first positioning portion is column-shaped.

[0015] Optionally, a second positioning portion extending downward is provided at the bottom of the left and right sides of the first insulator, a seventh gap is provided between one of the second positioning portions and the first front plug-in portion, an eighth gap is provided between another second positioning portion and the first rear plug-in portion, and the second positioning portion is plate-shaped.

[0016] Optionally, the first electrical connection portion is a power connection portion, and the third electrical connection portion is a differential signal connection portion.

[0017] Optionally, the second electrical connection portion is a sideband signal connection portion or a differential signal connection portion.

[0018] Optionally, a wire outlet is provided on one side of the first insulator, and the first cable, the second cable and the third cable extend outward through the wire outlet.

[0019] Optionally, a lock buckle is further included, which is arranged in the mounting groove, and the mounting groove is arranged on the second front plug-in part. The lock buckle includes a lock plate bent into a U shape, one side of the lock plate is clamped in the mounting groove, and the other side of the lock plate is a free end and exposed. A raised lock protrusion is provided on the outer side of the other side of the lock plate, and a pull strap is provided on the upper end of the other side of the lock plate.

[0020] The present invention also provides a connector assembly, which includes: the above-mentioned line-end connector and board-end connector.

[0021] Optionally, the board-side connector includes:

[0022] a second insulator, wherein a first terminal group, a second terminal group, and a third terminal group are sequentially provided inside the second insulator along its length, the first terminal group, the second terminal group, and the third terminal group being pluggable with the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion, respectively;

[0023] The shell is sleeved on the outside of the second insulator, a front plug-in groove for plugging with the front plug-in portion is provided between the front side of the second insulator and the front end face of the shell, and a rear plug-in groove for plugging with the rear plug-in portion is provided between the rear side of the second insulator and the rear end face of the shell.

[0024] The present invention provides a wire end connector and a connector assembly, which have the following beneficial effects:

[0025] 1. The line-end connector integrates a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion, including a power connection portion and a signal connection portion, saving space. The front plug-in portion and the rear plug-in portion located on the front and rear sides of the first insulator are stably plugged into the plug-in slot on the board-end connector. A lock can be installed in the installation slot to achieve a snap connection with the board-end connector.

[0026] 2. The front plug-in portion and the rear plug-in portion on the front and rear sides of the first insulator are of different lengths, which can prevent the wire end connector from being inserted reversely;

[0027] 3. A first positioning portion is provided at the bottom of the first insulator of the line-end connector. The first positioning portion can be plugged into and matched with the positioning groove on the board-end connector to play a positioning and plug-in guide role, thereby improving the stability of the plug-in.

[0028] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a board-end connector from one perspective is shown according to the first embodiment of the present invention.

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a board-end connector from another perspective is shown according to the first embodiment of the present invention.

[0032] Figure 3 A schematic structural diagram of a connector assembly according to a second embodiment of the present invention when plugging into a rear-side wire-end connector is shown.

[0033] Figure 4 A schematic structural diagram of a connector assembly according to a second embodiment of the present invention when plugging into a line-end connector with front-side outlets is shown.

[0034] Description of reference numerals:

[0035] 1. First insulator; 2. First electrical connection part; 3. Second electrical connection part; 4. Third electrical connection part; 5. First front plug-in part; 6. Second front plug-in part; 7. First rear plug-in part; 8. Second rear plug-in part; 9. First positioning part; 10. Protrusion; 11. Second positioning part; 12. Wire outlet; 13. Lock buckle; 14. Locking protrusion; 15. Drawstring; 16. Housing. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0037] The present invention provides a line end connector, which includes:

[0038] a first insulator, wherein a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion are sequentially provided inside the first insulator along its length, the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being connected to the first cable, the second cable, and the third cable, respectively, one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a power connection portion, and at least one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a signal connection portion;

[0039] The bottom of the first insulator is provided with an inserting portion, the inserting portion is provided with a mounting groove, and the mounting groove is used for installing a lock buckle.

[0040] Specifically, the first electrical connection part, the second electrical connection part and the third electrical connection part are integrated in the same first insulator of the line end connector. The first electrical connection part, the second electrical connection part and the third electrical connection part include a power connection part and a signal connection part, which not only realizes the integration of the number of terminal groups, but also realizes the integration and expansion of the functions of the terminal groups, saving space and facilitating layout.

[0041] Optionally, the plug-in portion includes a front plug-in portion and a rear plug-in portion, and the front plug-in portion and the rear plug-in portion are respectively located on the front side and the rear side of the first insulator.

[0042] Specifically, the line end connector is provided with a front plug-in portion and a rear plug-in portion on both sides of the first insulator, which can realize the plug-in of the line end connector with front and rear wires, and can be stably plugged into the plug-in slot on the board end connector. A lock can be installed in the installation slot, and the lock can be used to achieve a snap connection with the board end connector.

[0043] Optionally, the front plug-in portion and the rear plug-in portion have different lengths.

[0044] Specifically, since the lengths of the front plug-in portion and the rear plug-in portion are different, the line end connector can be prevented from being plugged in reverse.

[0045] Optionally, the front plug-in portion includes a first front plug-in portion and a second front plug-in portion, the first front plug-in portion is located in front of the first electrical connection portion and the second electrical connection portion, and the second front plug-in portion is located in front of the third electrical connection portion, and the rear plug-in portion includes a first rear plug-in portion and a second rear plug-in portion, the first rear plug-in portion is located in rear of the first electrical connection portion and the second electrical connection portion, and the second rear plug-in portion is located in rear of the third electrical connection portion, and the second front plug-in portion and the second rear plug-in portion have different lengths.

[0046] Specifically, the first front plug-in portion and the first rear plug-in portion are symmetrically arranged on the front and rear sides of the first electrical connection portion and the second electrical connection portion, and a second front plug-in portion and a second rear plug-in portion are respectively arranged on the front and rear sides of each third electrical connection portion. The difference in length between the second front plug-in portion and the second rear plug-in portion is utilized to avoid the wire end connector being plugged in reverse.

[0047] Optionally, the first electrical connection part, the second electrical connection part and the third electrical connection part are integrated on the same circuit board, and a downward extending plug-in part is provided on the circuit board, and a gold finger is provided on the plug-in part for plugging with the terminal group on the board end connector.

[0048] Optionally, a printed circuit board is also included, and the lower part of the printed circuit board extends downward to form a first plug-in board part and a second plug-in board part, a first gap is set between the first plug-in board part and the second plug-in board part, the first electrical connection part and the second electrical connection part are spaced apart on the first plug-in board part, and the third electrical connection part is set on the second plug-in board part. There are at least two third electrical connection parts, and at least two third electrical connection parts are spaced apart from each other, and a second gap is set between adjacent third electrical connection parts.

[0049] Specifically, the first electrical connection part, the second electrical connection part and the third electrical connection part are integrated on the same printed circuit board, and the circuit board is provided with a first plug-in board part and a second plug-in board part extending downward, and the first plug-in board part and the second plug-in board part are provided with gold fingers for plugging with the terminal group on the board-end connector; the first electrical connection part and the second electrical connection part are arranged on the same first plug-in board part, and a sufficient electrical gap is maintained between the two, and a sufficient electrical gap is maintained between adjacent third electrical connection parts through the second gap, and different third electrical connector parts are respectively located on different second plug-in board parts, forming multiple plug-in structures to ensure the stability of plug-in and pull-out.

[0050] Optionally, a second front plug-in portion and a second rear plug-in portion are respectively provided on the front and rear sides of each third electrical connection portion, a third gap is provided between adjacent second front plug-in portions, and a fourth gap is provided between adjacent second rear plug-in portions.

[0051] Specifically, two adjacent second front plug-in portions and two adjacent second rear plug-in portions are also spaced apart to form mutually independent plug-in portions, thereby forming multiple plug-in structures and improving plug-in stability.

[0052] Optionally, a first positioning portion extending downward is provided at the bottom of the first insulator.

[0053] Specifically, the first positioning portion can be plugged into and matched with the positioning groove on the board-end connector to play a positioning and plug-in guide role, thereby improving the stability of the plug-in.

[0054] Optionally, a protrusion is provided on the front end face and / or the rear end face of the first insulator, the first front plug-in portion and the first rear plug-in portion are located at the bottom of the protrusion, and the first positioning portion is located at the bottom of the protrusion.

[0055] In one example, two first positioning portions are respectively arranged on one side of the first front plug-in portion and one side of the first rear plug-in portion, wherein a fifth gap is arranged between one of the first positioning portions and the first front plug-in portion, and wherein a sixth gap is arranged between the other positioning portion and the first rear plug-in portion.

[0056] Specifically, in order to adapt to the shell size of the first terminal group and the second terminal group of the board-end connector, protrusions are set on the front and rear end surfaces of the first insulator, and the first front plug-in portion and the first rear plug-in portion are at the bottom of the protrusions, and the first front plug-in portion and the first rear plug-in portion protrude outward compared to the second front plug-in portion and the second rear plug-in portion.

[0057] Optionally, the plug-in portion is plate-shaped, and the first positioning portion is column-shaped.

[0058] Optionally, a second positioning portion extending downward is provided at the bottom of the left and right sides of the first insulator, a seventh gap is provided between one of the second positioning portions and the first front plug-in portion, an eighth gap is provided between the other second positioning portion and the first rear plug-in portion, and the second positioning portion is plate-shaped.

[0059] Optionally, the plug-in portion is plate-shaped, and the first positioning portion is column-shaped.

[0060] Specifically, when the line-end connector is plugged into the corresponding board-end connector, the two second positioning portions respectively adhere to the outer side of the housing of the board-end connector, playing a role in plugging and unplugging positioning and guiding, further improving the stability of plugging.

[0061] Optionally, the first electrical connection portion is a power connection portion, and the third electrical connection portion is a differential signal connection portion.

[0062] Specifically, the line-end connector realizes the integration of power connection and differential signal connection through the setting of the power connection part and the differential signal connection part, expands the function of the line-end connector, realizes a multifunctional integrated design, and realizes the integration of the electrical connector function on the basis of the integration of the number of electrical connection parts.

[0063] Optionally, the second electrical connection portion is a sideband signal connection portion or a differential signal connection portion.

[0064] Specifically, a sideband signal (Sideband) or a differential signal (Differentialsignal) can be selected as the signal transmitted by the second electrical connection portion as needed to achieve diversity in signal transmission.

[0065] Optionally, a wire outlet is provided on one side of the first insulator, and the first cable, the second cable and the third cable extend outward through the wire outlet.

[0066] Specifically, the line end connector can be divided into a front-side line-out connector and a rear-side line-out connector according to different line-out directions.

[0067] Optionally, a lock buckle is further included, which is arranged in the installation groove, and the installation groove is arranged on the second front plug-in part. The lock buckle includes a lock plate bent into a U shape, one side of the lock plate is clamped in the installation groove, and the other side of the lock plate is a free end and exposed. A raised lock protrusion is provided on the outer side of the other side of the lock plate, and a pull strap is provided on the upper end of the other side of the lock plate.

[0068] Specifically, the U-shaped lock plate is elastic. When the pull strap is pulled or the other side of the lock plate is pressed, the lock protrusion on the other side of the lock plate can be retracted from the lock hole on the board end connector, and the line end connector can be pulled out at this time.

[0069] Furthermore, the left and right parts of the mounting groove are respectively located on two adjacent second front plug-in parts, and the lock buckle is arranged at one end of the two second front plug-in parts close to each other, ensuring as much as possible that the two locking protrusions on the lock plate are centered on the first insulator, so that the two locking protrusions can be evenly stressed.

[0070] The present invention also provides a connector assembly, which includes: the above-mentioned line-end connector and board-end connector.

[0071] Optionally, the board-side connector includes:

[0072] a second insulator, wherein a first terminal group, a second terminal group, and a third terminal group are sequentially arranged inside the second insulator along its length, the first terminal group, the second terminal group, and the third terminal group being pluggable with the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion, respectively;

[0073] The shell is sleeved on the outside of the second insulator, a front plug-in groove is provided between the front side of the second insulator and the front end surface of the shell, and the rear plug-in groove is provided between the rear side of the second insulator and the rear end surface of the shell.

[0074] Specifically, the line-end connector is an integrated line-end connector. When the line-end connector is plugged into the above-mentioned board-end connector, the front plug-in portion and the rear plug-in portion on the line-end connector are respectively plugged into and matched with the front plug-in slot and the rear plug-in slot to achieve stable plug-in.

[0075] Example 1

[0076] like Figure 1 and Figure 2 As shown, the present invention provides a line end connector, which includes:

[0077] a first insulator 1, wherein a first electrical connection portion 2, a second electrical connection portion 3, and a third electrical connection portion 4 are sequentially provided inside the first insulator 1 along its length, the first electrical connection portion 2, the second electrical connection portion 3, and the third electrical connection portion 4 being connected to a first cable, a second cable, and a third cable, respectively; one of the first electrical connection portion 2, the second electrical connection portion 3, and the third electrical connection portion 4 being a power connection portion, and at least one of the first electrical connection portion 2, the second electrical connection portion 3, and the third electrical connection portion 4 being a signal connection portion;

[0078] A plug-in portion extending downward is provided at the bottom of the first insulator 1 , and a mounting groove is provided on the plug-in portion for mounting the lock buckle 13 .

[0079] In this embodiment, the plug-in portion includes a front plug-in portion and a rear plug-in portion, and the front plug-in portion and the rear plug-in portion are respectively located at the front side and the rear side of the first insulator 1 .

[0080] In this embodiment, the front plug-in portion and the rear plug-in portion have different lengths.

[0081] In this embodiment, the front plug-in portion includes a first front plug-in portion 5 and a second front plug-in portion 6, the first front plug-in portion 5 is located in front of the first electrical connection portion 2 and the second electrical connection portion 3, and the second front plug-in portion 6 is located in front of the third electrical connection portion 4, and the rear plug-in portion includes a first rear plug-in portion 7 and a second rear plug-in portion 8, the first rear plug-in portion 7 is located in the rear side of the first electrical connection portion 2 and the second electrical connection portion 3, and the second rear plug-in portion 8 is located in the rear side of the third electrical connection portion 4, and the lengths of the second front plug-in portion 6 and the second rear plug-in portion 8 are different.

[0082] In this embodiment, a printed circuit board is also included, and the lower part of the printed circuit board extends downward to form a first plug-in board portion and a second plug-in board portion, a first gap is set between the first plug-in board portion and the second plug-in board portion, the first electrical connection portion 2 and the second electrical connection portion 3 are arranged at intervals on the first plug-in board portion, and the third electrical connection portion 4 is arranged on the second plug-in board portion. There are at least two third electrical connection portions 4, and at least two third electrical connection portions 4 are arranged at intervals from each other, and a second gap is set between adjacent third electrical connection portions 4.

[0083] In this embodiment, a second front plug-in portion 6 and a second rear plug-in portion 8 are respectively provided on the front and rear sides of each third electrical connection portion 4 , a third gap is provided between adjacent second front plug-in portions 6 , and a fourth gap is provided between adjacent second rear plug-in portions 8 .

[0084] In this embodiment, a first positioning portion 9 extending downward is provided at the bottom of the first insulator 1 .

[0085] In this embodiment, a protrusion 10 is provided on the front end face and / or rear end face of the first insulator 1 , the first front plug-in portion 5 and the first rear plug-in portion 7 are located at the bottom of the protrusion 10 , and the first positioning portion 9 is located at the bottom of the protrusion 10 .

[0086] In this embodiment, the plug-in portion is plate-shaped, and the first positioning portion 9 is column-shaped.

[0087] In this embodiment, downwardly extending second positioning portions 11 are provided at the bottom of the left and right sides of the first insulator 1, a seventh gap is provided between one of the second positioning portions 11 and the first front plug-in portion 5, and an eighth gap is provided between another second positioning portion 11 and the first rear plug-in portion 7, and the second positioning portions 11 are plate-shaped.

[0088] In this embodiment, the first electrical connection portion 2 is a power connection portion, and the third electrical connection portion 4 is a differential signal connection portion.

[0089] In this embodiment, the second electrical connection portion 2 is a sideband signal connection portion.

[0090] In this embodiment, a wire outlet 12 is provided on one side of the first insulator 1 , and the first cable, the second cable, and the third cable extend outward through the wire outlet 12 .

[0091] In this embodiment, a lock buckle 13 is also included. The lock buckle 13 is arranged in the installation groove, and the installation groove is arranged on the second front plug-in portion 6. The lock buckle 13 includes a lock plate bent into a U shape. One side of the lock plate is clamped in the installation groove, and the other side of the lock plate is a free end and exposed. A raised lock protrusion 14 is provided on the outer side of the other side of the lock plate, and a pull strap 15 is provided on the upper end of the other side of the lock plate.

[0092] In summary, the line-end connector provided by the present invention integrates the first electrical connection part 2, the second electrical connection part 3 and the third electrical connection part 4 including the power connection part, the differential signal connection part and the sideband signal connection part in the same first insulator 1, realizing a multifunctional integrated design of the interface of the line-end connector, saving space, and being beneficial to product layout; and the setting of the first positioning part 9 and the second positioning part 11 further improves the plugging stability when plugging with the board-end connector; the second front plug-in part 6 and the second rear plug-in part 8 arranged on the front and rear sides of the first insulator 1 have different lengths, which can avoid the line-end connector from being plugged in upside down.

[0093] Example 2

[0094] like Figure 3 and Figure 4 As shown, the present invention also provides a connector assembly, which includes: the above-mentioned line-end connector and board-end connector.

[0095] In this embodiment, the board-side connector includes:

[0096] A second insulator, wherein a first terminal group, a second terminal group, and a third terminal group are sequentially arranged inside the second insulator along its length, and the first terminal group, the second terminal group, and the third terminal group are pluggable with the first electrical connection part 2, the second electrical connection part 3, and the third electrical connection part 4, respectively;

[0097] The shell 16 is sleeved on the outside of the first insulator 1, and a front plug-in groove that is plugged into the front plug-in portion is provided between the front side of the second insulator and the front end surface of the shell 16, and a rear plug-in groove that is plugged into the rear plug-in portion is provided between the rear side of the second insulator and the rear end surface of the shell 16.

[0098] In this embodiment, a lock hole is provided on the housing 16 to engage with the lock buckle 13 .

[0099] Specifically, the connector assembly adopts a board-end connector that integrates the first terminal group, the second terminal group and the third terminal group to be plugged into and matched with the above-mentioned line-end connector, so that the connector assembly can realize integrated plugging and unplugging, which not only saves space, but also is easy to assemble and can keep the output wires neat; the front plug-in part and the rear plug-in part on the line-end connector are different in length, and are respectively plugged into and matched with the front plug-in slot and the rear plug-in slot, which can prevent the line-end connector from being plugged in reverse.

[0100] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A line end connector, characterized in that: The connector includes: a first insulator, wherein a first electrical connection portion, a second electrical connection portion, and a third electrical connection portion are sequentially provided inside the first insulator along its length, the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being connected to a first cable, a second cable, and a third cable, respectively, one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a power connection portion, and at least one of the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion being a signal connection portion; The bottom of the first insulator is provided with an inserting portion, and the inserting portion is provided with a mounting groove, and the mounting groove is used to install the lock buckle; The plug-in portion includes a front plug-in portion and a rear plug-in portion, and the front plug-in portion and the rear plug-in portion are respectively located at the front side and the rear side of the first insulator; The front plug-in portion and the rear plug-in portion have different lengths.

2. The wire end connector according to claim 1, wherein: The front plug-in portion includes a first front plug-in portion and a second front plug-in portion, the first front plug-in portion is located in front of the first electrical connection portion and the second electrical connection portion, and the second front plug-in portion is located in front of the third electrical connection portion. The rear plug-in portion includes a first rear plug-in portion and a second rear plug-in portion, the first rear plug-in portion is located in rear of the first electrical connection portion and the second electrical connection portion, and the second rear plug-in portion is located in rear of the third electrical connection portion. The second front plug-in portion and the second rear plug-in portion have different lengths.

3. The wire end connector according to claim 2, wherein: It also includes a printed circuit board, the lower part of the printed circuit board extends downward to form a first plug-in board part and a second plug-in board part, a first gap is set between the first plug-in board part and the second plug-in board part, the first electrical connection part and the second electrical connection part are arranged at intervals on the first plug-in board part, and the third electrical connection part is arranged on the second plug-in board part. There are at least two third electrical connection parts, and at least two of the third electrical connection parts are arranged at intervals from each other, and a second gap is set between adjacent third electrical connection parts.

4. The wire end connector according to claim 3, characterized in that: A second front plug-in portion and a second rear plug-in portion are respectively provided on the front and rear sides of each third electrical connection portion. A third gap is provided between adjacent second front plug-in portions, and a fourth gap is provided between adjacent second rear plug-in portions.

5. The wire end connector according to claim 2, wherein: A first positioning portion extending downward is provided at the bottom of the first insulator.

6. The wire end connector according to claim 5, characterized in that: A protrusion is provided on the front end face and / or the rear end face of the first insulator, the first front plug-in portion and the first rear plug-in portion are located at the bottom of the protrusion, and the first positioning portion is located at the bottom of the protrusion.

7. The wire end connector according to claim 5, characterized in that: The plug-in portion is plate-shaped, and the first positioning portion is column-shaped.

8. The wire end connector according to claim 2, wherein: A second positioning portion extending downward is provided at the bottom of the left and right sides of the first insulator, a seventh gap is provided between one of the second positioning portions and the first front plug-in portion, an eighth gap is provided between another second positioning portion and the first rear plug-in portion, and the second positioning portion is plate-shaped.

9. The wire end connector according to claim 1, wherein: The first electrical connection portion is a power connection portion, and the third electrical connection portion is a differential signal connection portion.

10. The wire end connector according to claim 9, wherein: The second electrical connection portion is a sideband signal connection portion or a differential signal connection portion.

11. The wire end connector according to claim 1, wherein: A wire outlet is provided on one side of the first insulator, and the first cable, the second cable and the third cable extend outward through the wire outlet.

12. The wire end connector according to claim 2, wherein: It also includes a lock buckle, which is arranged in the installation groove, and the installation groove is arranged on the second front plug-in part. The lock buckle includes a lock plate bent into a U shape, one side of the lock plate is clamped in the installation groove, and the other side of the lock plate is a free end and exposed. A raised lock protrusion is provided on the outer side of the other side of the lock plate, and a pull strap is provided on the upper end of the other side of the lock plate.

13. A connector assembly, characterized in that: The connector assembly comprises: a line-end connector and a board-end connector according to any one of claims 1 to 12.

14. The connector assembly according to claim 13, wherein: The board-end connector includes: a second insulator, wherein a first terminal group, a second terminal group, and a third terminal group are sequentially provided inside the second insulator along its length, the first terminal group, the second terminal group, and the third terminal group being pluggable with the first electrical connection portion, the second electrical connection portion, and the third electrical connection portion, respectively; The shell is sleeved on the outside of the second insulator, a front plug-in groove for plugging with the front plug-in portion is provided between the front side of the second insulator and the front end face of the shell, and a rear plug-in groove for plugging with the rear plug-in portion is provided between the rear side of the second insulator and the rear end face of the shell.

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