Multi-head connector

Abstract

The invention discloses a multi-head connector, and the connector comprises a first housing part which is provided with two plugging cavities which are arranged side by side in the transverse direction and are independent from each other; an insulating member inserted and fixed into the first housing member in a front-back direction; the plurality of first power terminals are fixed with the insulating part, and one end of each first power terminal protrudes into one of the plugging cavities and forms a first butt joint end part; the plurality of second power terminals are fixed with the insulating part, and one end of each second power terminal protrudes into the other plugging cavity and forms a second butt joint end part; the first connecting piece is used for electrically connecting one first power terminal with one second power terminal; the second connecting piece is used for electrically connecting the other first power terminal with the other second power terminal; the plurality of wires are electrically connected with the corresponding first power terminals and the second power terminals respectively; and the second shell part is fixed at the rear end of the first shell part in a covering manner and seals the opening at the rear end of the first shell part.

Description

Technical Field

[0001] The present application relates to a multi-head connector. Background Art

[0002] With the rapid development of industrial equipment such as industrial robots and industrial servo motors, miniaturization and integration have become an inevitable trend in technological development. As an indispensable and important part of the input and output of electrical equipment, how to provide power, signals and data transmission in a small space at the same time, miniaturization and integration of electrical connectors are also an inevitable trend. In the prior art, electrical connectors are usually set up individually. On the equipment, if certain functions are required, two or more connectors need to be installed, which is not conducive to the use of small spaces. This will lead to problems such as increased volume and inconvenience in use.

[0003] Therefore, it is necessary to design a new solution to solve the above technical problems. Summary of the invention

[0004] The purpose of the present application is to provide a new multi-head connector that can be docked with two docking connectors at the same time and has a compact and stable structure.

[0005] To achieve the above objectives, this application provides the following technical solutions: A multi-head connector, comprising: The first housing member is formed with two plug-in cavities which are arranged side by side and independent of each other in a transverse direction, and each of the plug-in cavities penetrates the first housing member in a front-to-rear direction perpendicular to the transverse direction; An insulating member, at least partly inserted and fixed into the first housing member along the front-rear direction; A plurality of first power terminals are fixed to the insulating member, one end of each of the first power terminals protrudes into one of the plug-in cavities to form a first docking end; A plurality of second power terminals are fixed to the insulating member, one end of each of the second power terminals protrudes into another of the plug-in cavities to form a second butt-jointed end; a first connector, electrically connecting one of the first power terminals with one of the second power terminals; a second connecting member, electrically connecting another one of the first power terminals with another one of the second power terminals; A plurality of wires, respectively directly or indirectly electrically connected to the corresponding first power terminal and / or second power terminal; The second housing component is covered and fixed to the rear end of the first housing component to close the rear end opening of the first housing component.

[0006] Furthermore, the wire is electrically connected to the first connecting member.

[0007] Furthermore, a threaded hole is formed on the first connecting member, the wire is fastened with a fastener, and the fastener is threadedly fastened with the threaded hole by a bolt.

[0008] Further, the insulating member includes a first insulating member; At least two upper mounting grooves, formed by the upper surface of the first insulating member being recessed downward and penetrating the first insulating member in the front-to-back direction, wherein one of the first power terminals and one of the second power terminals are fixed in the upper mounting grooves from top to bottom; At least two lower mounting grooves, formed by the lower surface of the first insulating member being recessed upward and penetrating the first insulating member in the front-to-back direction, wherein another first power terminal and another second power terminal are clamped and fixed in the lower mounting grooves from bottom to top; The first butt joint end portion and the second butt joint end portion protrude forwardly from the front end surface of the first insulating member.

[0009] Furthermore, the insulating member further includes a second insulating member, and the second insulating member is sleeved on the outer periphery of the first insulating member; The second insulating member at least covers at least a portion of the upper and lower surfaces, at least a portion of the left and right surfaces, and at least a portion of the front end surface of the first insulating member; The first butt joint end portion and the second butt joint end portion protrude forwardly from the front end surface of the second insulating member.

[0010] Furthermore, a first elastic snap arm extending backward into a cantilever shape is formed on the second insulating member, and a first hook is formed at the free end of the first elastic snap arm. The first hook is snap-fastened to the outer surface of the first insulating member to limit the movement of the first insulating member relative to the second insulating member in the front-to-back direction.

[0011] Furthermore, it also includes: a shielding terminal core, including a plurality of shielding terminals and a shielding insulating member assembled and fixed with the shielding terminals; The shielding terminal core pieces are correspondingly inserted and assembled into the first insulating piece, and one end of each of the shielding terminals is formed with a shielding contact portion protruding out of the front end surface of the first insulating piece; A plurality of shielding conductors are electrically connected to corresponding shielding terminals respectively; Each of the plug-in cavities is correspondingly and matchedly provided with a shielding terminal core piece.

[0012] Furthermore, a shielding accommodating frame is integrally combined with the end face of the first insulating member along the lateral direction, and the shielding accommodating frame is open backwards, and the shielding terminal core is correspondingly inserted and fixed into the shielding accommodating frame from back to front, and the shielding contact portion protrudes forward from the front end face of the shielding accommodating frame.

[0013] Furthermore, the rear end edge of the shielding accommodating frame extends backward to form a second elastic snap arm, and the free end of the second elastic snap arm forms a second hook, which is correspondingly snapped to the rear end surface of the shielding insulating member to limit the movement of the shielding insulating member relative to the first insulating member in the front-to-back direction.

[0014] Furthermore, it also includes: a signal terminal core, including a plurality of signal terminals and a signal insulating member assembled and fixed with the signal terminals; The terminal core pieces are correspondingly inserted and assembled into the second insulating piece, and one end of each of the signal terminals is formed with a signal contact portion protruding out of the front end surface of the second insulating piece; A plurality of signal wires are electrically connected to corresponding signal terminals respectively; Each of the plug-in cavities is matched with a signal terminal core piece.

[0015] Furthermore, the second insulating member is formed with a signal accommodating cavity which is open toward the rear along the front-to-back direction, and the signal terminal core piece is correspondingly inserted and fixed into the signal accommodating cavity from the rear to the front.

[0016] Furthermore, the second insulating member extends backward at the position of the signal accommodating cavity to form a third elastic snap arm, and the free end of the third elastic snap arm is formed with a third hook, and the third hook is correspondingly snapped to the rear end surface of the signal insulating member to limit the movement of the signal insulating member relative to the second insulating member along the front-to-back direction.

[0017] Further, the second housing member includes a rear insulating shell and a rear metal shell, the outer surfaces of both sides of the rear insulating shell are concavely formed with mounting grooves, the inner surface of the rear metal shell is convexly formed with limited position guide pillars, the rear metal shell is assembled from back to front to the periphery of the rear insulating shell, and the limited position guide pillars are slidably implanted in the mounting grooves; A clamping protrusion, protruding from the inner wall surface of the mounting groove; A buckle notch is formed on the limiting guide column. When the rear metal shell and the rear insulating shell are assembled in place along the front-to-back direction, the convex portion is correspondingly clamped in the buckle notch to limit the movement of the rear metal shell relative to the rear insulating shell along the front-to-back direction.

[0018] Furthermore, the limiting guide column protrudes forward from the rear insulating shell in a cantilever shape and is correspondingly inserted into the first outer shell component.

[0019] Compared with the prior art, the beneficial effects of the present application are: it can be docked with two docking connectors at the same time, and the structure is compact and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a three-dimensional schematic diagram of the multi-head connector of the present application.

[0021] Figure 2 yes Figure 1 Front view of the multi-head connector shown in .

[0022] Figure 3 It is a partial exploded perspective view of the multi-head connector of the present application, specifically showing the perspective view when the rear metal shell is separated.

[0023] Figure 4 It is a partial exploded perspective view of the multi-head connector of the present application, specifically showing the perspective view when the rear metal shell and the rear insulating shell are separated.

[0024] Figure 5 It is a partial exploded perspective view of the multi-head connector of the present application, specifically showing a perspective view of the second shell component and the first shell component being separated.

[0025] Figure 6 It is a partial exploded perspective view of the multi-head connector of the present application, specifically showing a perspective view of the second housing component, the first housing component and the second insulating component when they are separated.

[0026] Figure 7 It is a three-dimensional exploded schematic diagram of the multi-head connector of the present application.

[0027] Figure 8 This is a three-dimensional schematic diagram of the shielding terminal core and the signal terminal core of the multi-head connector of the present application, with specific display angles and Figure 7 same.

[0028] Fig. 9 It is a partial exploded perspective view of the multi-head connector of the present application, specifically showing a perspective view of the rear metal shell, the rear insulating shell, the first outer shell component and the second insulating component when they are separated.

[0029] Fig.10 It is a partial three-dimensional exploded schematic diagram of the multi-head connector of the present application, specifically showing a three-dimensional schematic diagram of the rear metal shell, the rear insulating shell, the shielding insulating member, the signal insulating member, the first insulating member, the second insulating member and the first outer shell member when separated. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In the description of this application, it should be understood that the terms "include" and "have" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0032] For the accuracy of the description of the entire application, please refer to Figure 1 For reference, the Z-axis direction corresponds to the lateral direction (that is, the left-right direction); the X-axis direction is defined as the front-to-back direction, where the positive direction of the X-axis is the front; and the Y-axis direction is defined as the up-down direction, where the positive direction of the Y-axis is the top.

[0033] Please refer to Figures 1 to 10 As shown, a multi-head connector disclosed in the present application includes: an insulating member 2, a first shell member 1 sleeved on the outer periphery of the insulating member 2, a plurality of first power terminals 31 fixed in the insulating member 2, a plurality of second power terminals 32 fixed in the insulating member 2, a shielding terminal core member 41 fixed in the insulating member 2, a signal terminal core member 42 fixed in the insulating member 2, a first connecting member 5, a second connecting member 6, a plurality of wires 7 electrically connected directly or indirectly to the corresponding first power terminals 31 and second power terminals 32, a plurality of shielding wires 702 electrically connected to the corresponding shielding terminals 411, a plurality of signal wires 703 electrically connected to the corresponding signal terminals 421, and a second shell member 8 combined with the rear end of the first shell member 1. The multi-head connector of the present application can achieve docking with two docking connectors (not shown) at the same time.

[0034] Specifically, the first housing member 1 is made of metal material and is formed with two plug-in cavities 11 that are arranged side by side and independent of each other in the transverse direction, and each of the plug-in cavities 11 passes through the first housing member 1 in the front-to-back direction perpendicular to the transverse direction. At least a portion of the insulating member 2 is inserted and fixed into the first housing member 1 from back to front in the front-to-back direction. Figure 6 and Fig.10 As shown, specifically, in the embodiment of the present application, a mounting cavity 101 is formed at the rear end of the first housing member 1, the two plug-in cavities 11 are located in front of the mounting cavity 102, the rear ends of the two plug-in cavities 11 are respectively connected to the mounting cavity 101, and the two plug-in cavities 11 are separated by a partition wall 102 in the transverse direction, and the partition wall 102 is an integral part with the first housing member 1 and is a part of the first housing member 1. The insulating member 2 is inserted and fixed into the mounting cavity 101 of the first housing member 1 from the back to the front.

[0035] Among them, a plurality of first power terminals 31 are fixed to the insulating member 2, and one end of each of the first power terminals 31 protrudes forward into one of the plug-in cavities 11 to form a first docking end 311. A plurality of second power terminals 32 are fixed to the insulating member 2, and one end of each of the second power terminals 32 protrudes forward into another of the plug-in cavities 11 to form a second docking end 321. The two plug-in cavities 11 are used for docking and insertion of docking connectors. The first docking end 311 and the second docking end 321 are used for electrically docking with the docking connector.

[0036] Please refer to Figures 5 to 10 As shown, in the present application, the insulating member 2 includes a first insulating member 21 and a second insulating member 22. The upper surface of the first insulating member 21 is recessed downward to form two upper mounting grooves 211, and each of the upper mounting grooves 211 penetrates the first insulating member 21 in the front-to-back direction. One of the first power terminals 31 and the second power terminal 32 is fixed in the upper mounting groove 211 from top to bottom. The lower surface of the first insulating member 21 is recessed upward to form two lower mounting grooves 212, and each of the lower mounting grooves 212 penetrates the first insulating member 21 in the front-to-back direction. Another of the first power terminals 31 and another of the second power terminals 32 are fixed in the lower mounting groove 212 from bottom to top. The two first power terminals 31 located on one side (for example, the right side) in the transverse direction correspond to one of the plug-in cavities 11 respectively, and the two second power terminals 32 located on the other side (for example, the left side) in the transverse direction correspond to another of the plug-in cavities 11 respectively.

[0037] In a preferred embodiment of the present application, two first insulating members 21 are provided and arranged in a left-right direction, two first power terminals 31 are fixedly provided on one first insulating member 21, and two second power terminals 32 are fixedly provided on the other first insulating member 21. The second insulating member 22 is sleeved on the outer periphery of the first insulating member 21, and the second insulating member 22 at least covers at least a portion of the upper and lower surfaces (not numbered), at least a portion of the left and right surfaces (not numbered), and at least a portion of the front end surface (not numbered) of the first insulating member 21.

[0038] Further, the first connecting member 5 electrically connects the first power terminal 31 located above with the second power terminal 32 located above. In a preferred embodiment, a bolt (not numbered) can be passed through the first connecting member 5 to be threadedly locked with the end of the first power terminal 31 and the second power terminal 32. Similarly, the second connecting member 6 electrically connects the first power terminal 31 located below with the second power terminal 32 located below. In a preferred embodiment, a bolt (not numbered) can also be passed through the second connecting member 6 to be threadedly locked with the end of the first power terminal 31 and the second power terminal 32. After the two first power terminals 31, the two second power terminals 32, the two first insulating members 21, the first connecting member 5 and the second connecting member 6 are assembled and fixed as one, they are inserted from back to front to be assembled into the second insulating member 22, and then formed into a collated assembly and then inserted from back to front to be assembled into the mounting cavity 101 of the first housing member 1. The first butt joint end portion 311 and the second butt joint end portion 321 protrude forward from the front end surface of the first insulating member (21) and the front end surface of the second insulating member 22 respectively and are cantilevered in the plug-in cavity 11.

[0039] Please refer to Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, a first elastic snap arm 221 extending backward into a cantilever shape is formed on the second insulating member 22, and a first hook 2211 is formed at the free end (that is, the rear end) of the first elastic snap arm 221, and the first hook 2211 is snap-fastened to the outer surface of the first insulating member 21 (for example, a recessed portion 213 is formed at the rear end of the outer surface of the first insulating member 21, and the first hook 2211 slides from front to rear along the outer surface of the first insulating member 21 and then falls into the recessed portion 213 and is snap-fastened to the recessed portion 213) to limit the movement of the first insulating member 21 relative to the second insulating member 22 in the front-to-back direction.

[0040] Further, in the embodiment of the present application, the wire 7 is electrically connected to the first connector 5. In one embodiment, a threaded hole 51 is formed on the first connector 5, and a fastener 71 is fastened to one end of the wire 7, and the fastener 71 is threadedly fastened to the threaded hole 51 by a bolt 9. Of course, it can also be designed to directly weld one end of the wire 7 to the first connector 5. In addition, the fixing method of the wire 7 to the second connector 6 is the same as that of the first connector 5, which will not be repeated.

[0041] Please refer to Figures 1 to 10As shown, in the multi-head connector of the present application, a shielding terminal core 41 and a signal terminal core 42 are also provided. The shielding terminal core 41 includes a plurality of shielding terminals 411 (four are shown in the illustrated embodiment, but the actual number is not limited) and a shielding insulating member 412 assembled and fixed with the shielding terminal 411. The shielding terminal core 41 is correspondingly inserted and assembled into the first insulating member 21, and one end of each of the shielding terminals 411 is formed with a shielding contact portion 4111 that protrudes forward from the front end surface of the first insulating member 21. Each of the plug-in cavities 11 is correspondingly matched with a shielding terminal core 41.

[0042] In one embodiment, a shielding accommodating frame 214 is integrated with the end face of the first insulating member 21 in the transverse direction, the shielding accommodating frame 214 is open backward, the shielding terminal core member 41 is correspondingly inserted and fixed into the shielding accommodating frame 214 from the back to the front, and the shielding contact portion 4111 protrudes forward from the front end face of the shielding accommodating frame 214. In a preferred embodiment, the rear end edge of the shielding accommodating frame 214 extends backward to form a second elastic snap arm 2141, and the free end of the second elastic snap arm 2141 is formed with a second hook 2142, and the second hook 2142 is correspondingly snapped to the rear end face of the shielding insulating member 412 to limit the shielding insulating member 412 from moving relative to the first insulating member 21 in the front-to-back direction.

[0043] In addition, the signal terminal core 42 includes a plurality of signal terminals 421 (four are shown in the illustrated embodiment, but the actual number is not limited) and a signal insulating member 422 assembled and fixed with the signal terminal 421. The terminal core 42 is correspondingly inserted and assembled into the second insulating member 22, and one end of each of the signal terminals 421 is formed with a signal contact portion 4211 protruding out of the front end surface of the second insulating member 22. Each of the plug-in cavities 11 is correspondingly matched with a signal terminal core 42. In a more preferred embodiment, the second insulating member 22 is formed with a signal accommodating cavity 224 that is open to the rear along the front-to-back direction, and the signal terminal core 42 is correspondingly inserted and fixed into the signal accommodating cavity 224 from the back to the front. In a preferred embodiment, the second insulating member 22 extends backward at the position of the signal accommodating cavity 224 to form a third elastic snap arm 2241, and the free end of the third elastic snap arm 2241 is formed with a third hook 2242. The third hook 2242 is correspondingly snapped to the rear end surface of the signal insulating member 422 to limit the movement of the signal insulating member 422 relative to the second insulating member 22 along the front-to-back direction.

[0044] In other embodiments, the fixing methods of the signal terminal core 42 and the shielding terminal core 41 can be replaced. In addition, in the preferred embodiment of the present application, the signal terminal core 42 and the shielding terminal core 41 are separately fixed on the first insulating member 21 and the second insulating member 22 to facilitate assembly.

[0045] Please refer to Figures 5 to 10 As shown, in the present application, the second outer shell 8 includes a rear insulating shell 81 and a rear metal shell 82. The outer surfaces of both sides of the rear insulating shell are concavely formed with mounting grooves 811, and the inner surface of the rear metal shell 82 is protruded to form a limiting guide column 821. The rear metal shell 82 is assembled to the periphery of the rear insulating shell 81 from back to front, and the limiting guide column 821 is slidably implanted in the mounting groove 811. A protruding portion 8111 is protruded on the inner wall surface of the mounting groove 811, and a buckle notch 8211 is concavely formed at a corresponding position on the limiting guide column 821. When the rear metal shell 82 and the rear insulating shell 81 are assembled in place along the front-to-back direction, the protruding portion 8111 is correspondingly clamped in the buckle notch 8211 to limit the movement of the rear metal shell 82 relative to the rear insulating shell 81 along the front-to-back direction. In a preferred embodiment, the limiting guide post 821 protrudes forward from the rear insulating shell 81 in a cantilever shape and is correspondingly inserted into the first shell member 1 for positioning during assembly. Of course, in some other embodiments, the front end edge of the limiting guide post 821 can also be designed to form a hook (not shown), which can be correspondingly snap-fitted with the first shell member 1. In the preferred embodiment of the present application, the first shell member 1 and the second shell member 8 (specifically the rear metal shell 82) are fixed by bolts 80. The present application integrates the two connectors into one, and through clever structural design, the power terminals 31 and 32 are connected in series and shared, thereby realizing the overall miniaturization design of the multi-head connector.

[0046] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-head connector, characterized in that: include: The first housing member (1) is formed with two plug-in cavities (11) arranged side by side in a transverse direction and independent of each other, each of the plug-in cavities (11) passing through the first housing member (1) in a front-to-rear direction perpendicular to the transverse direction; An insulating member (2), at least partly inserted and fixed into the first housing member (1) along the front-rear direction; A plurality of first power terminals (31) fixed to the insulating member (2), one end of each of the first power terminals (31) protruding into one of the plug-in cavities (11) to form a first docking end portion (311); A plurality of second power terminals (32) fixed to the insulating member (2), one end of each of the second power terminals (32) protruding into another of the plug-in cavities (11) to form a second butt-jointed end portion (321); A first connecting member (5) electrically connects one of the first power terminals (31) and one of the second power terminals (32); a second connecting member (6) electrically connecting another one of the first power terminals (31) and another one of the second power terminals (32); A plurality of wires (701) are respectively directly or indirectly electrically connected to the corresponding first power terminal (31) and / or the second power terminal (32); The second housing member (8) is fixedly covered on the rear end of the first housing member (1) to close the rear end opening of the first housing member (1).

2. A multi-head connector according to claim 1, characterized in that: The conductive wire (701) is electrically connected to the first connecting member (5).

3. A multi-head connector according to claim 2, characterized in that: A threaded hole (51) is formed on the first connecting member (5), the wire (701) is fastened with a fastener (71), and the fastener (71) is threadedly fastened to the threaded hole (51) via a bolt (9).

4. A multi-head connector according to claim 1, characterized in that: The insulating member (2) comprises a first insulating member (21); At least two upper mounting grooves (211), formed by the upper surface of the first insulating member (21) being recessed downwards and penetrating the first insulating member (21) in the front-to-back direction, wherein one of the first power terminals (31) and one of the second power terminals (32) are fixedly mounted in the upper mounting grooves (211) from top to bottom; at least two lower mounting grooves (212), formed by the lower surface of the first insulating member (21) being recessed upwards and penetrating the first insulating member (21) in the front-to-back direction, wherein another first power terminal (31) and another second power terminal (32) are fixedly mounted in the lower mounting grooves (212) from bottom to top; The first butt joint end portion (311) and the second butt joint end portion (321) protrude forward from the front end surface of the first insulating member (21).

5. A multi-head connector according to claim 4, characterized in that: The insulating member (2) further comprises a second insulating member (22), wherein the second insulating member (22) is sleeved on the outer circumference of the first insulating member (21); The second insulating member (22) at least covers at least a portion of the upper and lower surfaces, at least a portion of the left and right surfaces, and at least a portion of the front end surface of the first insulating member (21); The first butt joint end portion (311) and the second butt joint end portion (321) protrude forward from the front end surface of the second insulating member (22).

6. A multi-head connector according to claim 5, characterized in that: The second insulating member (22) is provided with a first elastic snap arm (221) extending backwards in a cantilevered shape, and a first snap hook (2211) is formed at a free end of the first elastic snap arm (221), the first snap hook (2211) being snap-fastened to the outer surface of the first insulating member (21) to limit the movement of the first insulating member (21) relative to the second insulating member (22) in the front-rear direction.

7. A multi-head connector according to claim 4, characterized in that: Also includes: A shielding terminal core (41) comprising a plurality of shielding terminals (411) and a shielding insulating member (412) assembled and fixed to the shielding terminals (411); The shielding terminal core pieces (41) are correspondingly inserted and assembled into the first insulating piece (21), and one end of each shielding terminal (411) is formed with a shielding contact portion (4111) protruding from the front end surface of the first insulating piece (21); A plurality of shielding wires (702) are electrically connected to corresponding shielding terminals (411); Each of the plug-in cavities (11) is provided with a corresponding matching shielding terminal core piece (41).

8. A multi-head connector according to claim 7, characterized in that: The first insulating member (21) is integrally combined with a shielding accommodating frame (214) on the end face along the lateral direction, the shielding accommodating frame (214) is open rearwardly, the shielding terminal core member (41) is correspondingly inserted and fixed into the shielding accommodating frame (214) from rear to front, and the shielding contact portion (4111) protrudes forwardly from the front end face of the shielding accommodating frame (214).

9. A multi-connector according to claim 8, characterized in that: The rear end edge of the shielding accommodating frame (214) extends backward to form a second elastic snap arm (2141), and the free end of the second elastic snap arm (2141) is formed with a second hook (2142), and the second hook (2142) is correspondingly snapped to the rear end surface of the shielding insulating member (412) to limit the shielding insulating member (412) from moving relative to the first insulating member (21) in the front-to-back direction.

10. The multi-connector according to claim 5, characterized in that: Also includes: The signal terminal core (42) comprises a plurality of signal terminals (421) and a signal insulating member (422) assembled and fixed to the signal terminals (421); The terminal core pieces (42) are correspondingly inserted and assembled into the second insulating piece (22), and one end of each of the signal terminals (421) is formed with a signal contact portion (4211) protruding from the front end surface of the second insulating piece (22); A plurality of signal wires (703) are electrically connected to corresponding signal terminals (421); Each of the plug-in cavities (11) is provided with a corresponding matching signal terminal core piece (42).

11. The multi-connector according to claim 7, characterized in that: The second insulating member (22) is formed with a signal accommodating cavity (224) opening rearwardly along the front-to-back direction, and the signal terminal core member (42) is correspondingly inserted and fixed into the signal accommodating cavity (224) from the back to the front.

12. A multi-connector according to claim 11, characterized in that: The second insulating member (22) extends backward at the position of the signal accommodating cavity (224) to form a third elastic snap arm (2241), and the free end of the third elastic snap arm (2241) is formed with a third hook (2242), and the third hook (2242) is correspondingly snapped to the rear end surface of the signal insulating member (422) to limit the movement of the signal insulating member (422) relative to the second insulating member (22) in the front-to-back direction.

13. A multi-connector according to any one of claims 1 to 12, characterized in that: The second housing member (8) comprises a rear insulating shell (81) and a rear metal shell (82); the outer surfaces of both sides of the rear insulating shell are concavely provided with mounting grooves (811); the inner surface of the rear metal shell (82) is protruding to form a limiting guide column (821); the rear metal shell (82) is assembled from the back to the front to the periphery of the rear insulating shell (81); the limiting guide column (821) is slidably implanted in the mounting groove (811); A clamping protrusion (8111) protruding from the inner wall surface of the mounting groove (811); A snap notch (8211) is formed concavely on the limiting guide column (821); when the rear metal shell (82) and the rear insulating shell (81) are assembled in place along the front-to-back direction, the snap protrusion (8111) is correspondingly snapped into the snap notch (8211) to limit the movement of the rear metal shell (82) relative to the rear insulating shell (81) along the front-to-back direction.

14. A multi-connector according to claim 13, characterized in that: The limiting guide column (821) protrudes forward from the rear insulating shell (81) in a cantilevered shape and is correspondingly inserted into the first outer shell component (1).

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