Center terminal, electrical connection module and connector

Abstract

The invention discloses a center terminal, an electric connection module and a connector. The central terminal includes: a tubular portion having a front end and a rear end opposite to each other in an axial direction thereof, and a central through hole extending between the front end and the rear end thereof; the welding end is connected with the rear end of the tubular part and is used for being welded on a conductor core of a cable; and the contact end is connected with the front end of the tubular part and is used for matching and electrically contacting with a matching center terminal. A blocking part is formed on the peripheral wall of the tubular part, and the blocking part is bent into the central through hole and at least partially blocks the central through hole, so that welding flux cannot flow to the contact end through the central through hole when the welding end is welded, and the electric contact performance of the contact end of the central terminal cannot be affected. Besides, the primary lock is additionally arranged in the shell, so that the outer terminal can be prevented from moving before the secondary lock is locked, and the installation quality of the connector is ensured.

Description

Technical Field

[0001] The present invention relates to a center terminal, an electrical connection module including the center terminal, and a connector including the electrical connection module. Background Art

[0002] In the prior art, a coaxial connector generally includes a housing, an outer terminal, an insulating core, a center terminal (or inner terminal), and a cable. The outer terminal, the insulating core, the center terminal, and the cable are pre-assembled into an electrical connection module, and then the electrical connection module is inserted into the housing. The center terminal is inserted into the insulating core, and the insulating core is inserted into the outer terminal. The rear end of the center terminal is welded to the conductor core of the cable, and the front end of the center terminal is used for making electrical contact with a mating center terminal. The rear end of the outer terminal is fixed to the cable and electrically connected to the shielding layer of the cable.

[0003] In the prior art, when welding the rear end of the center terminal, solder, such as solder and flux, will flow along the central through hole of the center terminal to the front end, which will affect the electrical contact performance between the center terminal and the mating center terminal. In addition, in the prior art, it is difficult to ensure that the diameters of the three positioning flanges on the outer terminal are consistent, which will cause the outer terminal to tilt during insertion, and it is easy to damage the elastic arms of the outer terminal. In addition, in the prior art, the outer terminal will shake in the housing, which will cause unstable electrical contact and easily lead to signal interruption. In addition, in the prior art, there is no primary lock in the housing that can be used to lock the outer terminal, which causes the outer terminal to move before the secondary lock is latched, affecting the installation quality of the connector. In addition, the existing outer terminal is difficult to manufacture, costly, and has a large axial length. Summary of the Invention

[0004] The object of the present invention aims to solve at least one of the above problems and defects existing in the prior art.

[0005] According to one aspect of the present invention, there is provided a center terminal. The center terminal includes: a tubular portion having a front end and a rear end opposite to each other in its axial direction and a central through hole extending between its front end and rear end; a welding end connected to the rear end of the tubular portion for welding to the conductor core of the cable; and a contact end connected to the front end of the tubular portion for mating and making electrical contact with a mating center terminal. A blocking portion is formed on the peripheral wall of the tubular portion, and the blocking portion is bent into the central through hole and at least partially blocks the central through hole.

[0006] According to an exemplary embodiment of the present invention, a locking protrusion is formed on the outer wall surface of the rear end of the tubular portion, and the locking protrusion is used for engaging with a groove on the insulating core of the connector to lock the center terminal in the insulating core.

[0007] According to another exemplary embodiment of the present invention, the contact end includes a plurality of elastic cantilevers which are connected to the front end of the tubular portion and are spaced apart circumferentially of the tubular portion for making electrical contact with the inserted mating center terminal.

[0008] According to another exemplary embodiment of the present invention, the center terminal is a one-piece stamping.

[0009] According to another aspect of the present invention, there is provided an electrical connection module. The electrical connection module includes: a cable having a conductor core; and the aforementioned center terminal, the welding end of which is welded to the conductor core of the cable.

[0010] According to an exemplary embodiment of the present invention, the electrical connection module further includes: an insulating core body formed with a center jack, and the center terminal is inserted and fixed into the center jack of the insulating core body.

[0011] According to another exemplary embodiment of the present invention, a groove is formed in the insulating core body, and the locking protrusion on the center terminal is engaged into the groove to lock the center terminal in the insulating core body.

[0012] According to another exemplary embodiment of the present invention, the electrical connection module further includes: an outer terminal which is sleeved on the insulating core body and is electrically connected to the shielding layer of the cable for mating and making electrical contact with a mating outer terminal.

[0013] According to another exemplary embodiment of the present invention, the outer terminal includes: a cylindrical main body having a front end and a rear end opposite to each other in its axial direction; and a mating portion connected to the front end of the cylindrical main body for mating and making electrical contact with the mating outer terminal, and the rear end portion of the cylindrical main body is sleeved on the cable and is welded to the shielding layer of the cable.

[0014] According to another exemplary embodiment of the present invention, an annular first positioning flange, a second positioning flange and a third positioning flange are formed on the cylindrical main body, the first positioning flange and the third positioning flange are respectively located at the front end and the rear end of the cylindrical main body, and the second positioning flange is located between the first positioning flange and the third positioning flange and is close to the first positioning flange; the outer peripheral surfaces of the first, second and third positioning flanges are used for abutting against the inner peripheral surface of the housing of the connector to radially position the outer terminal.

[0015] According to another exemplary embodiment of the present invention, the outer peripheral surfaces of the first, second and third positioning flanges have the same central axis and the same diameter, so that the outer terminal positioned in the housing will not be inclined or shaken.

[0016] According to another exemplary embodiment of the present invention, the insulating core has an annular radial flange, and the radial flange axially abuts against the inner side surface of the first positioning flange to axially position the insulating core; the rear end portion of the insulating core is inserted into the front end portion of the cylindrical body in an interference fit manner to fix the insulating core in the cylindrical body.

[0017] According to another exemplary embodiment of the present invention, a riveting point protruding towards the insulating core is formed on the front end portion of the cylindrical body to increase the joint strength between the front end portion of the cylindrical body and the rear end portion of the insulating core.

[0018] According to another exemplary embodiment of the present invention, the mating portion of the outer terminal includes a plurality of main elastic arms, and the plurality of main elastic arms are spaced apart in the circumferential direction of the cylindrical body; an opening and an auxiliary elastic arm located in the opening are formed on the main elastic arm, and the main elastic arm and the auxiliary elastic arm are used for simultaneous electrical contact with the inserted mating outer terminal.

[0019] According to another exemplary embodiment of the present invention, the first positioning flange and the second positioning flange continuously extend in the circumferential direction of the cylindrical body; a plurality of slots are formed on the third positioning flange, and the plurality of slots are spaced apart in the circumferential direction of the cylindrical body.

[0020] According to another exemplary embodiment of the present invention, the outer terminal is an integrally stamped part.

[0021] According to another aspect of the present invention, a connector is provided. The connector includes: a housing having an inner cavity; and the aforementioned electrical connection module inserted into the inner cavity of the housing.

[0022] According to an exemplary embodiment of the present invention, a protruding locking portion is formed in the inner cavity of the housing, and the locking portion axially abuts against the first positioning flange of the outer terminal to prevent the electrical connection module from being pulled out of the inner cavity of the housing.

[0023] According to another exemplary embodiment of the present invention, an elastic lock and a slot are formed on the outer peripheral wall of the housing, and the elastic lock is adapted to move between a locked position engaged with the slot and an unlocked position separated from the slot; when the elastic lock is moved to the locked position, the end of the elastic lock is engaged into the recess between the first and second positioning flanges of the outer terminal to lock the electrical connection module in the inner cavity of the housing.

[0024] According to another exemplary embodiment of the present invention, the housing is an integrally injection-molded part.

[0025] In each of the foregoing exemplary embodiments according to the present invention, the central terminal has a blocking portion for blocking the flow of solder to the contact end. Therefore, the electrical contact performance of the contact end of the central terminal will not be affected.

[0026] In addition, in some of the foregoing exemplary embodiments of the present invention, a primary lock is added to the housing, which can prevent the outer terminal from moving before the secondary locking of the latch, ensuring the installation quality of the connector.

[0027] In addition, in some of the foregoing exemplary embodiments of the present invention, the outer diameters of the three positioning flanges on the outer terminal are the same, and the outer terminal will not tilt or shake in the housing. Therefore, when inserting the outer terminal, the elastic arms on the outer terminal will not be damaged, and stable electrical contact between the outer terminal and the mating outer terminal can be ensured.

[0028] In addition, in some of the foregoing exemplary embodiments of the present invention, a plurality of slotted holes are formed on the positioning flange at the rear end of the outer terminal. Therefore, the manufacturing difficulty of the outer terminal can be reduced, the length of the outer terminal can be shortened, and the manufacturing cost can be reduced.

[0029] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, and can help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective schematic view showing a connector according to an exemplary embodiment of the present invention, wherein the elastic latch is in the unlocked position;

[0031] Figure 2 A plan sectional view showing a connector according to an exemplary embodiment of the present invention;

[0032] Figure 3 Another plan sectional view showing a connector according to an exemplary embodiment of the present invention;

[0033] Figure 4 A sectional view showing a connector according to an exemplary embodiment of the present invention, wherein the elastic latch is in the locked position;

[0034] Figure 5 A perspective schematic view showing the electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0035] Figure 6 A longitudinal sectional view showing the electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0036] Figure 7 A plan schematic view showing the electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0037] Figure 8 A longitudinal sectional view showing a center terminal of an electrical connection module of a connector and a cable according to an exemplary embodiment of the present invention;

[0038] Figure 9 A perspective schematic view showing a center terminal of an electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0039] Figure 10 A longitudinal sectional view showing a center terminal of an electrical connection module of a connector according to an exemplary embodiment of the present invention. Detailed Description of the Invention

[0040] The technical solution of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0041] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a thorough understanding of the embodiments disclosed herein. However, it is obvious that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form to simplify the drawings.

[0042] According to a general inventive concept of the present invention, a center terminal is provided. The center terminal includes: a tubular portion having a front end and a rear end opposite to each other in its axial direction and a central through hole extending between the front end and the rear end; a welding end connected to the rear end of the tubular portion for welding to a conductor core of a cable; and a contact end connected to the front end of the tubular portion for mating and making electrical contact with a mating center terminal. A blocking portion is formed on the peripheral wall of the tubular portion, and the blocking portion is bent into the central through hole and at least partially blocks the central through hole.

[0043] According to another general inventive concept of the present invention, an electrical connection module is provided. The electrical connection module includes: a cable having a conductor core; and the aforementioned center terminal, the welding end of which is welded to the conductor core of the cable.

[0044] According to another general inventive concept of the present invention, a connector is provided. The connector includes: a housing having an inner cavity; and the aforementioned electrical connection module inserted into the inner cavity of the housing.

[0045] Figure 5 A perspective schematic view showing an electrical connection module 100 of a connector according to an exemplary embodiment of the present invention;Figure 6 A longitudinal cross-sectional view of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention is shown; Figure 7 A plan schematic view of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention is shown; Figure 8 A longitudinal cross-sectional view of the central terminal 4 and the cable 5 of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention is shown; Figure 9 A three-dimensional schematic view of the central terminal 4 of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention is shown;

[0046] Figure 10 A longitudinal cross-sectional view of the central terminal 4 of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention is shown.

[0047] As Figures 5 to 10 shown, in an exemplary embodiment of the present invention, a central terminal 4 is disclosed. The central terminal 4 includes: a tubular portion 40, a welding end 41, and a contact end 42. The tubular portion 40 has a front end and a rear end opposite to each other in its axial direction and a central through hole 401 extending between its front end and rear end. The welding end 41 is connected to the rear end of the tubular portion 40 and is used for welding to the conductor core 51 of the cable 5. The contact end 42 is connected to the front end of the tubular portion 40 and is used for mating and making electrical contact with a mating central terminal (not shown). A window 402 and a blocking portion 43 connected to the side of the window 402 are formed on the peripheral wall of the tubular portion 40. The blocking portion 43 is bent into the central through hole 401 through the window 402 and at least partially blocks the central through hole 401, so that when the welding end 41 is welded, the solder cannot flow to the contact end 42 through the central through hole 401.

[0048] As Figures 5 to 10 shown, in the illustrated embodiment, a locking projection 4a is formed on the outer wall surface of the rear end of the tubular portion 40. The locking projection 4a is used for engaging with a groove 3a on the insulating core 3 of the connector to lock the central terminal 4 in the insulating core 3.

[0049] As Figures 5 to 10 shown, in the illustrated embodiment, the contact end 42 includes a plurality of elastic cantilevers 42a. The plurality of elastic cantilevers 42a are connected to the front end of the tubular portion 40 and are spaced apart in the circumferential direction of the tubular portion 40 and are used for making electrical contact with the inserted mating central terminal.

[0050] As Figures 5 to 10As shown, in the illustrated embodiment, the central terminal 4 is a one-piece stamping. In the illustrated embodiment, the window 402 on the central terminal 4 is a punching cutout produced when stamping the blocking portion 43, rather than a deliberately formed window 402. That is, the material corresponding to the window 402 is stamped into the blocking portion 43.

[0051] As Figures 5 to 10 shown, in another exemplary embodiment of the present invention, an electrical connection module 100 is also disclosed. The electrical connection module 100 includes: a cable 5 and a central terminal 4. The cable 5 has a conductor core 51. The welding end 41 of the central terminal 4 is welded to the conductor core 51 of the cable 5.

[0052] As Figures 5 to 10 shown, in the illustrated embodiment, the electrical connection module 100 further includes an insulating core 3, and the insulating core 3 is formed with a central jack 301. The central terminal 4 is inserted and fixed into the central jack 301 of the insulating core 3.

[0053] As Figures 5 to 10 shown, in the illustrated embodiment, a groove 3a is formed in the insulating core 3, and the locking projection 4a on the central terminal 4 is engaged into the groove 3a to lock the central terminal 4 in the insulating core 3.

[0054] As Figures 5 to 10 shown, in the illustrated embodiment, the electrical connection module 100 further includes an outer terminal 2. The outer terminal 2 is sleeved on the insulating core 3 and electrically connected to the shielding layer of the cable 5 for mating and making electrical contact with a mating outer terminal (not shown).

[0055] As Figures 5 to 10 shown, in the illustrated embodiment, the outer terminal 2 includes: a cylindrical main body 20 and a mating portion 24. The cylindrical main body 20 has a front end and a rear end opposite to each other in its axial direction. The mating portion 24 is connected to the front end of the cylindrical main body 20 for mating and making electrical contact with a mating outer terminal. The rear end portion of the cylindrical main body 20 is sleeved on the cable 5 and welded to the shielding layer of the cable 5.

[0056] As Figures 5 to 10 shown, in the illustrated embodiment, an annular first positioning flange 21, a second positioning flange 22, and a third positioning flange 23 are formed on the cylindrical main body 20. The first positioning flange 21 and the third positioning flange 23 are respectively located at the front end and the rear end of the cylindrical main body 20, and the second positioning flange 22 is located between the first positioning flange 21 and the third positioning flange 23 and close to the first positioning flange 21. The outer peripheral surfaces 21a, 22a, and 23a of the first, second, and third positioning flanges 21, 22, and 23 are used to abut against the inner peripheral surface of the housing 1 of the connector to radially position the outer terminal 2.

[0057] AsFigures 5 to 10 As shown, in the illustrated embodiment, the outer peripheral surfaces 21a, 22a, 23a of the first, second, and third positioning flanges 21, 22, 23 have the same central axis and the same diameter, such that the outer terminal 2 positioned within the housing 1 will not tilt or wobble.

[0058] As Figures 5 to 10 shown, in the illustrated embodiment, the insulating core 3 has an annular radial flange 32, and the radial flange 32 axially abuts against the inner side surface of the first positioning flange 21 to axially position the insulating core 3. The rear end portion 31 of the insulating core 3 is inserted into the front end portion of the cylindrical main body 20 in an interference fit manner to fix the insulating core 3 within the cylindrical main body 20.

[0059] As Figures 5 to 10 shown, in the illustrated embodiment, a riveting point 2a protruding toward the insulating core 3 is formed on the front end portion of the cylindrical main body 20 to increase the joint strength between the front end portion of the cylindrical main body 20 and the rear end portion 31 of the insulating core 3.

[0060] As Figures 5 to 10 shown, in the illustrated embodiment, the mating portion 24 of the outer terminal 2 includes a plurality of main elastic arms 24a, and the plurality of main elastic arms 24a are spaced apart in the circumferential direction of the cylindrical main body 20. An opening 24b and an auxiliary elastic arm 24c located within the opening 24b are formed on the main elastic arm 24a, and the main elastic arm 24a and the auxiliary elastic arm 24c are used for simultaneous electrical contact with the inserted mating outer terminal.

[0061] As Figures 5 to 10 shown, in the illustrated embodiment, the first positioning flange 21 and the second positioning flange 22 continuously extend in the circumferential direction of the cylindrical main body 20. A plurality of slots 23a are formed on the third positioning flange 23, and the plurality of slots 23a are spaced apart in the circumferential direction of the cylindrical main body 20.

[0062] As Figures 5 to 10 shown, in the illustrated embodiment, the outer terminal 2 is a one-piece stamping.

[0063] Figure 1 A perspective schematic view showing a connector according to an exemplary embodiment of the present invention, wherein the elastic latch 11 is in the unlocked position; Figure 2 A planar cross-sectional view showing a connector according to an exemplary embodiment of the present invention; Figure 3 Another planar cross-sectional view showing a connector according to an exemplary embodiment of the present invention; Figure 4 A cross-sectional view showing a connector according to an exemplary embodiment of the present invention, wherein the elastic latch 11 is in the locked position;

[0064] As Figures 1 to 10As shown, in another exemplary embodiment of the present invention, a connector, such as a coaxial connector, is also disclosed. The connector includes: a housing 1 and an electrical connection module 100. The housing 1 has an inner cavity 101. The electrical connection module 100 is inserted into the inner cavity 101 of the housing 1.

[0065] As Figures 1 to 10 shown, in the illustrated embodiment, a raised locking portion (or primary lock) 121 is formed in the inner cavity 101 of the housing 1. The locking portion 121 axially abuts against the first positioning flange 21 of the outer terminal 2 to prevent the electrical connection module 100 from being pulled out of the inner cavity 101 of the housing 1. In this way, the electrical connection module 100 can be pre-locked in the housing 1 by the locking portion 121 and will not move in the housing 1.

[0066] As Figures 1 to 10 shown, in the illustrated embodiment, an elastic latch (or secondary lock) 11 and a slot 12 are formed on the outer peripheral wall 10 of the housing 1. The elastic latch 11 is adapted to move between a locking position engaged with the slot 12 and an unlocking position separated from the slot 12. When the elastic latch 11 is moved to the locking position, the end 11a of the elastic latch 11 is engaged into the recess 2d between the first and second positioning flanges 21, 22 of the outer terminal 2 to lock the electrical connection module 100 in the inner cavity 101 of the housing 1. In the illustrated embodiment, the strength of the elastic latch (secondary lock) 11 is much greater than that of the locking portion (primary lock) 121. Therefore, the electrical connection module 100 can be reliably locked in the housing 1 by the elastic latch 11.

[0067] As Figures 1 to 10 shown, in the illustrated embodiment, the housing 1 is an integrally injection-molded part. In the illustrated embodiment, the elastic latch 11 is a part of the housing 1 and there is no need to separately provide a secondary lock. Therefore, the manufacturing cost can be reduced.

[0068] Those skilled in the art can understand that the above-described embodiments are all exemplary, and those skilled in the art can make improvements to them. The structures described in various embodiments can be freely combined without conflict in structure or principle. These changes should reasonably fall within the protection scope of the present invention.

[0069] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present invention and should not be construed as a limitation to the present invention.

[0070] Although some embodiments of the general concept of the present invention have been shown and described, those of ordinary skill in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

[0071] It should be noted that the phrase "comprising" does not exclude other elements or steps, and the phrases "a" or "an" do not exclude a plurality. Additionally, any reference numerals in the claims should not be construed as limiting the scope of the present invention.

Claims

1. A central terminal, characterized in that, Comprising: A tubular portion (40) having a front end and a rear end opposite to each other in its axial direction and a central through-hole (401) extending between its front end and rear end; A welding end (41) connected to the rear end of the tubular portion (40) for welding to the conductor core (51) of a cable (5); And A contact end (42) connected to the front end of the tubular portion (40) for mating and making electrical contact with a mating center terminal, A blocking portion (43) is formed on the peripheral wall of the tubular portion (40), and the blocking portion (43) is bent into the central through-hole (401) and at least partially blocks the central through-hole (401).

2. The center terminal according to claim 1, wherein: A locking projection (4a) is formed on the outer wall surface of the rear end of the tubular portion (40), and the locking projection (4a) is used for engaging with a groove (3a) on the insulating core (3) of a connector to lock the center terminal (4) in the insulating core (3).

3. The center terminal according to claim 1, wherein: The contact end (42) includes a plurality of elastic cantilevers (42a), the plurality of elastic cantilevers (42a) are connected to the front end of the tubular portion (40) and are spaced apart in the circumferential direction of the tubular portion (40) for making electrical contact with an inserted mating center terminal.

4. The central terminal according to claim 1, characterized in that: The center terminal (4) is an integrally stamped and formed part.

5. An electrical connection module, characterized in that, Comprising: A cable (5) having a conductor core (51); And The center terminal (4) according to any one of claims 1-4, the welding end (41) of which is welded to the conductor core (51) of the cable (5).

6. The electrical connection module according to claim 5, characterized in that, Further comprising: An insulating core (3) formed with a central jack (301), The center terminal (4) is inserted and fixed into the central jack (301) of the insulating core (3).

7. The electrical connection module according to claim 6, wherein: A groove (3a) is formed in the insulating core (3), and the locking projection (4a) on the center terminal (4) is engaged into the groove (3a) to lock the center terminal (4) in the insulating core (3).

8. The electrical connection module according to claim 6, wherein, Further comprising: An outer terminal (2) sleeved on the insulating core (3) and electrically connected to the shielding layer of the cable (5) for mating and making electrical contact with a mating outer terminal.

9. The electrical connection module according to claim 8, wherein: The outer terminal (2) includes: A cylindrical main body (20) having a front end and a rear end opposite to each other in its axial direction; and A mating portion (24) connected to the front end of the cylindrical main body (20) for mating and making electrical contact with the mating outer terminal, The rear end portion of the cylindrical main body (20) is sleeved on the cable (5) and welded to the shielding layer of the cable (5).

10. The electrical connection module according to claim 9, wherein: An annular first positioning flange (21), a second positioning flange (22) and a third positioning flange (23) are formed on the cylindrical main body (20). The first positioning flange (21) and the third positioning flange (23) are respectively located at the front end and the rear end of the cylindrical main body (20), and the second positioning flange (22) is located between the first positioning flange (21) and the third positioning flange (23) and is close to the first positioning flange (21). The outer peripheral surfaces (21a, 22a, 23a) of the first, second and third positioning flanges (21, 22, 23) are used to abut against the inner peripheral surface of the housing (1) of the connector to radially position the outer terminal (2).

11. The electrical connection module according to claim 10, wherein: The outer peripheral surfaces (21a, 22a, 23a) of the first, second and third positioning flanges (21, 22, 23) have the same central axis and the same diameter, so that the outer terminal (2) positioned in the housing (1) will not tilt or shake.

12. The electrical connection module according to claim 10, wherein: The insulating core (3) has an annular radial flange (32), and the radial flange (32) axially abuts against the inner side surface of the first positioning flange (21) to axially position the insulating core (3). The rear end portion (31) of the insulating core (3) is inserted into the front end portion of the cylindrical main body (20) in an interference fit manner to fix the insulating core (3) in the cylindrical main body (20).

13. The electrical connection module according to claim 12, wherein: A riveting point (2a) protruding towards the insulating core (3) is formed on the front end portion of the cylindrical main body (20) to increase the joint strength between the front end portion of the cylindrical main body (20) and the rear end portion (31) of the insulating core (3).

14. The electrical connection module according to claim 10, wherein: The mating portion (24) of the outer terminal (2) includes a plurality of main elastic arms (24a), and the plurality of main elastic arms (24a) are spaced apart in the circumferential direction of the cylindrical main body (20). An opening (24b) and an auxiliary elastic arm (24c) located in the opening (24b) are formed on the main elastic arm (24a), and the main elastic arm (24a) and the auxiliary elastic arm (24c) are used for simultaneous electrical contact with the inserted mating outer terminal.

15. The electrical connection module according to claim 10, wherein: The first positioning flange (21) and the second positioning flange (22) continuously extend in the circumferential direction of the cylindrical main body (20). A plurality of slots (23a) are formed on the third positioning flange (23), and the plurality of slots (23a) are spaced apart in the circumferential direction of the cylindrical main body (20).

16. The electrical connection module according to claim 9, wherein: The outer terminal (2) is an integrally stamped part.

17. A connector, characterized in that, Comprising: A housing (1) having an inner cavity (101); And The electrical connection module (100) according to any one of claims 8-16 is inserted into the inner cavity (101) of the housing (1).

18. The connector according to claim 17, wherein: A raised locking portion (121) is formed in the inner cavity (101) of the housing (1), and the locking portion (121) axially abuts against the first positioning flange (21) of the outer terminal (2) to prevent the electrical connection module (100) from being pulled out of the inner cavity (101) of the housing (1).

19. The connector according to claim 18, wherein: An elastic latch (11) and a slot hole (12) are formed on the outer peripheral wall (10) of the housing (1), and the elastic latch (11) is adapted to move between a locked position engaged with the slot hole (12) and an unlocked position separated from the slot hole (12); When the elastic latch (11) is moved to the locked position, the end (11a) of the elastic latch (11) is engaged into the recess (2d) between the first and second positioning flanges (21, 22) of the outer terminal (2) to lock the electrical connection module (100) in the inner cavity (101) of the housing (1).

20. The connector according to claim 17, wherein: The housing (1) is an integrally injection-molded part.

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