Central terminal, electrical connection module

Abstract

The present invention discloses a central terminal, an electrical connection module, and a connector. The central terminal comprises of: a tubular part (40) having front and rear ends opposite in its axial direction, and a central through-hole (401) extending between its front and rear ends; a welding end (41) connected to the rear end of the tubular part (40), used for welding to a conductor core (51) of a cable (5); and a contact end (42) connected to the front end of the tubular part (40) for mating and electrical contact with a mating center terminal. A blocking portion (43) is formed on the peripheral wall of the tubular part (40), which is bent into the central through-hole (401) and at least partially blocks the central through-hole (401). Therefore, the solder at the welding end cannot flow to the contact end through the central through-hole when welding the welding end and cannot affect the electrical contact performance of the contact end of the central terminal. In addition, a first lock has been added to the housing to prevent the outer terminal from being moved before the second lock is snapped and locked, ensuring the installation quality of the connector.

Description

[0001] CENTRAL TERMINAL, ELECTRICAL CONNECTION MODULE AND CONNECTOR

[0002] CROSS-REFERENCE TO RELATED APPLICATION

[0003] This application claims the benefit of Chinese Patent Application No. CN202311850334.3 filed on December 29, 2023 in the State Intellectual Property Office of China, the whole disclosure of which is incorporated herein by reference.

[0004] BACKGROUND OF THE INVENTION

[0005] Field of the Invention

[0006] The present invention relates to a central terminal, an electrical connection module comprising the central terminal, and a connector comprising the electrical connection module.

[0007] Description of the Related Art

[0008] In the prior art, a coaxial connector typically includes a housing, an outer terminal, an insulation core, a center terminal (also known as an inner terminal), and a cable. The outer terminal, insulation core, central terminal, and cable are pre-assembled into an electrical connection module, which is then plugged into the housing. The central terminal is inserted into the insulation core, and the insulation 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 to make 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.

[0009] In the prior art, when welding the rear end of the center terminal, solder and flux at the rear end will flow along the center 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 two positioning flanges on the outer terminal are consistent, which can cause the outer terminal to tilt during insertion and easily damage the elastic arm of the outer terminal. In addition, in the prior art, the outer terminal may shake in the housing, which can cause unstable electrical contact and easily lead to signal interruption. In addition, in the prior art, there is no first lock in the housing that can be used to lock the outer terminal, which may cause the outer terminal to move before the second lock is snapped, affecting the installation quality of the connector. In addition, in the prior art, the manufacturing difficulty of the outer terminal is high, the cost is high, and the axial length is large. SUMMARY OF THE INVENTION

[0010] The present invention has been made to overcome or alleviate at least one aspect of the above mentioned disadvantages.

[0011] According to an aspect of the present invention, there is provided a central terminal. The central terminal comprises of: a tubular part having front and rear ends opposite in its axial direction, and a central through-hole extending between its front and rear ends; a welding end connected to the rear end of the tubular part, used for welding to a conductor core of a cable; and a contact end connected to the front end of the tubular part for mating and electrical contact with a mating center terminal. A blocking portion is formed on the peripheral wall of the tubular part, which is bent into the central through-hole and at least partially blocks the central through-hole.

[0012] 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 part, which is used to engage with a snap slot formed in an insulation core of a connector to lock the central terminal in the insulation core.

[0013] According to another exemplary embodiment of the present invention, the contact end comprises multiple elastic cantilevers, which are connected to the front end of the tubular part and distributed at intervals in the circumferential direction of the tubular part, for electrical contact with the inserted mating center terminal.

[0014] According to another exemplary embodiment of the present invention, the center terminal is an integral stamped piece.

[0015] According to another aspect of the present invention, there is provided an electrical connection module. The electrical connection module comprises: a cable with a conductor core; and the above central terminal. The welding end of the central terminal is welded to the conductor core of the cable.

[0016] According to an exemplary embodiment of the present invention, the electrical connection module further comprises an insulation core which is formed with a central hole, the central terminal is inserted and fixed into the central hole of the insulation core.

[0017] According to another exemplary embodiment of the present invention, a snap slot is formed in the insulation core, and the locking protrusion on the central terminal is engaged into the snap slot to lock the central terminal in the insulation core.

[0018] According to another exemplary embodiment of the present invention, the electrical connection module further comprises an outer terminal which is fitted onto the insulation core and electrically connected to a shielding layer of the cable, for mating and electrical contact with a mating outer terminal.

[0019] According to another exemplary embodiment of the present invention, the outer terminal comprises: a cylindrical body with front and rear ends opposite in its axial direction; and a mating part which is connected to the front end of the cylindrical body for mating and electrical contact with the mating outer terminal. The rear end of the cylindrical body is fitted onto the cable and welded to the shielding layer of the cable.

[0020] According to another exemplary embodiment of the present invention, a first positioning flange, a second positioning flange and a third positioning flange are circular and formed on the cylindrical body, the first positioning flange and the third positioning flange are respectively located at the front and rear ends of the cylindrical body, 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 to rest against the inner peripheral surface of the housing of the connector to radially position the outer terminal.

[0021] 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 inside the housing will not tilt or shake.

[0022] According to another exemplary embodiment of the present invention, the insulation core has a radial flange, which is annular and axially pressed against the inner surface of the first positioning flange to axially position the insulation core; the rear end of the insulation core is inserted into the front end of the cylindrical body in an interference fit manner to fix the insulation core in the cylindrical body.

[0023] According to another exemplary embodiment of the present invention, a rivet point protruding towards the insulation core is formed on the front end of the cylindrical body to increase the bonding strength between the front end of the cylindrical body and the rear end of the insulation core.

[0024] According to another exemplary embodiment of the present invention, the mating part of the outer terminal comprises multiple main elastic arms, which are distributed at intervals in the circumferential direction of the cylindrical body; an opening and an auxiliary elastic arm located within the opening are formed on the main elastic arm, the main elastic arm and the auxiliary elastic arm are used to make electrical contact with the inserted mating outer terminal simultaneously.

[0025] According to another exemplary embodiment of the present invention, the first positioning flange and the second positioning flange extend continuously in the circumferential direction of the cylindrical body; multiple slots are formed on the third positioning flange, which are distributed at intervals in the circumferential direction of the cylindrical body.

[0026] According to another exemplary embodiment of the present invention, the outer terminal is an integral stamped piece.

[0027] According to another aspect of the present invention, there is provided a connector. The connector comprises a housing having an inner cavity; and the above electrical connection module inserted into the inner cavity of the housing. According to an exemplary embodiment of the present invention, a locking portion is formed in the inner cavity of the housing, and the locking portion is axially pressed 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.

[0028] According to another exemplary embodiment of the present invention, an elastic locking buckle and a slot hole are formed on the outer peripheral wall of the housing, wherein the elastic locking buckle is adapted to be moved between a locking position engaged with the slot hole and an unlocking position separated from the slot hole; when the elastic locking buckle is moved to the locking position, the end of the elastic locking buckle is engaged into a 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.

[0029] According to another exemplary embodiment of the present invention, the housing is an integral injection molded piece.

[0030] In the aforementioned exemplary embodiments according to the present invention, the center terminal has a blocking portion for blocking the flow of solder to the contact end, thus not affecting the electrical contact performance of the contact end of the center terminal.

[0031] In addition, in the aforementioned exemplary embodiments of the present invention, a first lock is added to the housing to prevent the outer terminal from being moved before the second lock is snapped and locked, ensuring the installation quality of the connector.

[0032] In addition, in the aforementioned exemplary embodiments of the present invention, the outer diameters of the three positioning flanges on the outer terminal are consistent, and the outer terminal will not tilt or shake in the housing. Therefore, when inserting the outer terminal, the elastic arm on the outer terminal will not be damaged, and stable electrical contact between the outer terminal and the mating outer terminal can be ensured.

[0033] In addition, in the aforementioned exemplary embodiments of the present invention, multiple slots are formed on the positioning flange at the rear end of the outer terminal, which can reduce the manufacturing difficulty of the outer terminal, shorten the length of the outer terminal, and reduce manufacturing costs.

[0034] BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other features of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which:

[0036] Figure 1 shows an illustrative perspective view of a connector according to an exemplary embodiment of the present invention, with the elastic locking buckle in the unlocked position;

[0037] Figure 2 shows a plan sectional view of a connector according to an exemplary embodiment of the present invention;

[0038] Figure 3 shows another plan sectional view of a connector according to an exemplary embodiment of the present invention;

[0039] Figure 4 shows a cross-sectional view of a connector according to an exemplary embodiment of the present invention, with the elastic locking buckle in the locked position;

[0040] Figure 5 shows an illustrative perspective view of an electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0041] Figure 6 shows a longitudinal sectional view of an electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0042] Figure 7 shows an illustrative plan view of the electrical connection module of a connector according to an exemplary embodiment of the present invention;

[0043] Figure 8 shows a longitudinal sectional view of the central terminal and cable of the electrical connection module of the connector according to an exemplary embodiment of the present invention;

[0044] Figure 9 shows an illustrative perspective view of the central terminal of the electrical connection module of a connector according to an exemplary embodiment of the present invention; and

[0045] Figure 10 shows a longitudinal sectional view of the central terminal of the electrical connection module of a connector according to an exemplary embodiment of the present invention.

[0046] DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE IVENTION

[0047] Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.

[0048] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.

[0049] According to a general concept of the present invention, there is provided a central terminal. The central terminal comprises of: a tubular part having front and rear ends opposite in its axial direction, and a central through-hole extending between its front and rear ends; a welding end connected to the rear end of the tubular part, used for welding to a conductor core of a cable; and a contact end connected to the front end of the tubular part for mating and electrical contact with a mating center terminal. A blocking portion is formed on the peripheral wall of the tubular part, which is bent into the central through-hole and at least partially blocks the central through-hole.

[0050] According to another general concept of the present invention, there is provided an electrical connection module. The electrical connection module comprises: a cable with a conductor core; and the above central terminal. The welding end of the central terminal is welded to the conductor core of the cable.

[0051] According to another general concept of the present invention, there is provided a connector. The connector comprises a housing having an inner cavity; and the above electrical connection module inserted into the inner cavity of the housing.

[0052] Figure 5 shows an illustrative perspective view of an electrical connection module 100 of a connector according to an exemplary embodiment of the present invention; Figure 6 shows a longitudinal sectional view of an electrical connection module 100 of a connector according to an exemplary embodiment of the present invention; Figure 7 shows an illustrative plan view of an electrical connection module 100 of a connector according to an exemplary embodiment of the present invention; Figure 8 shows a longitudinal sectional view of the central terminal 4 and cable 5 of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention; Figure 9 shows an illustrative perspective view of the central terminal 4 of the electrical connection module 100 of the connector according to an exemplary embodiment of the present invention; Figure 10 shows a longitudinal 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.

[0053] As shown in Figures 5 to 10, in an exemplary embodiment of the present invention, a central terminal 4 is disclosed. The central terminal 4 includes a tubular part 40, a welding end 41, and a contact end 42. The tubular part 40 has front and rear ends opposite in its axial direction, as well as a central through-hole 401 extending between its front and rear ends. The welding end 41 is connected to the rear end of the tubular part 40 and is used for welding to a conductor core 51 of a cable 5. The contact end 42 is connected to the front end of the tubular part 40 for mating and electrical contact with a mating center 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 part 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 the solder at the welding end 41 cannot flow through the central through-hole 401 to the contact end 42 when welding the welding end 41.

[0054] As shown in Figures 5 to 10, in the illustrated embodiment, a locking protrusion 4a is formed on the outer wall surface of the rear end of the tubular part 40, which is used to engage with a snap slot 3a formed in an insulation core 3 of a connector to lock the central terminal 4 in the insulation core 3.

[0055] As shown in Figures 5 to 10, in the illustrated embodiment, the contact end 42 includes multiple elastic cantilevers 42, which are connected to the front end of the tubular part 40 and distributed at intervals in the circumferential direction of the tubular part 40, for electrical contact with the inserted mating center terminal.

[0056] As shown in Figures 5 to 10, in the illustrated embodiment, the central terminal 4 is an integral stamped part. In the illustrated embodiment, the window 402 on the central terminal 4 is a punch cut produced during the stamping of the blocking portion 43, and is not intentionally formed. That is to say, the material corresponding to window 402 is stamped and formed into the blocking portion 43.

[0057] As shown in Figures 5 to 10, 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 the center 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.

[0058] As shown in Figures 5 to 10, in the illustrated embodiment, the electrical connection module 100 further includes an insulation core 3, which is formed with a central hole 301. The central terminal 4 is inserted and fixed into the central hole 301 of the insulation core 3.

[0059] As shown in Figures 5 to 10, in the illustrated embodiment, a snap slot 3a is formed in the insulation core 3, and the locking protrusion 4a on the central terminal 4 is engaged into the snap slot 3 a to lock the central terminal 4 in the insulation core 3.

[0060] As shown in Figures 5 to 10, in the illustrated embodiment, the electrical connection module 100 further includes an outer terminal 2, which is fitted onto the insulation core 3 and electrically connected to the shielding layer of the cable 5, for mating and making electrical contact with the mating outer terminal (not shown).

[0061] As shown in Figures 5 to 10, in the illustrated embodiment, the outer terminal 2 includes a cylindrical body 20 and a mating part 24. The cylindrical body 20 has front and rear ends that are opposite in its axial direction. The mating part 24 is connected to the front end of the cylindrical body 20 for mating and electrical contact with the mating outer terminal. The rear end of the cylindrical body 20 is fitted onto the cable 5 and welded to the shielding layer of the cable 5.

[0062] As shown in Figures 5 to 10, in the illustrated embodiment, a first positioning flange 21, a second positioning flange 22 and a third positioning flange 23 are annular and formed on the cylindrical body 20. The first positioning flange 21 and third positioning flange 23 are respectively located at the front and rear ends of the cylindrical 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 21, 22, and 23 of the first, second, and third positioning flanges 21, 22, and 23 are used to rest against the inner peripheral surface of the housing 1 of the connector to radially position the outer terminal 2.

[0063] As shown in Figures 5 to 10, in the illustrated embodiment, the outer peripheral surfaces 21a, 22a, and 23 a of the first, second, and third positioning flanges 21, 22, and 23 have the same central axis and the same diameter, so that the outer terminal 2 positioned inside the housing 1 does not tilt or shake.

[0064] As shown in Figures 5 to 10, in the illustrated embodiment, the insulation core 3 has an annular radial flange 32, which axially rests against the inner surface of the first positioning flange 21 to axially position the insulation core 3. The rear end 31 of the insulation core 3 is inserted into the front end of the cylindrical body 20 in an interference fit manner to fix the insulation core 3 in the cylindrical body 20.

[0065] As shown in Figures 5 to 10, in the illustrated embodiment, a rivet point 2a protruding towards the insulation core 3 is formed on the front end of the cylindrical body 20 to increase the bonding strength between the front end of the cylindrical body 20 and the rear end 31 of the insulation core 3.

[0066] As shown in Figures 5 to 10, in the illustrated embodiment, the mating part 24 of the outer terminal 2 includes multiple main elastic arms 24a, which are distributed at intervals in the circumferential direction of the cylindrical body 20. An opening 24b and an auxiliary elastic arm 24c located in the opening 24b are formed on the main elastic arm 24a. The main elastic arm 24a and the auxiliary elastic arm 24c are used to make electrical contact with the inserted mating outer terminal at the same time.

[0067] As shown in Figures 5 to 10, in the illustrated embodiment, the first positioning flange 21 and the second positioning flange 22 extend continuously in the circumferential direction of the cylindrical body 20. On the third positioning flange 23, there are multiple slots 23a’ formed, which are distributed at intervals in the circumferential direction of the cylindrical body 20.

[0068] As shown in Figures 5 to 10, in the illustrated embodiment, the outer terminal 2 is an integral stamped part.

[0069] Figure 1 shows an illustrative perspective view of a connector according to an exemplary embodiment of the present invention, with the elastic locking buckle 11 in the unlocked position; Figure 2 shows a plan sectional view of a connector according to an exemplary embodiment of the present invention; Figure 3 shows another plan sectional view of a connector according to an exemplary embodiment of the present invention; Figure 4 shows a cross-sectional view of a connector according to an exemplary embodiment of the present invention, with the elastic locking buckle 11 in the locked position;

[0070] As shown in Figures 1 to 10, 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.

[0071] As shown in Figures 1 to 10, in the illustrated embodiment, a protruding locking portion (also known as a first lock) 121 is formed in the inner cavity 101 of the housing 1. The locking portion 121 is axially pressed 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 through the locking portion 121, and cannot be moved in the housing 1 .

[0072] As shown in Figures 1 to 10, in the illustrated embodiment, an elastic locking buckle (also known as a second lock) 11 and a slot hole 12 are formed on the outer peripheral wall 10 of the housing 1. The elastic locking buckle 11 is adapted to be moved between a locking position engaged with the slot hole 12 and an unlocking position separated from the slot hole 12. When the elastic locking buckle 11 is moved to the locking position, the end Ila of the elastic locking buckle 11 is engaged in a 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 locking buckle (second lock) 11 is much greater than that of the locking portion (first lock) 121, therefore, the electrical connection module 100 can be reliably locked in the housing 1 through the elastic locking buckle 11.

[0073] As shown in Figures 1 to 10, in the illustrated embodiment, the housing 1 is an integral injection molded part. In the illustrated embodiment, the elastic locking buckle 11 is a part of the housing 1 and does not require a separate second lock, thus reducing manufacturing costs.

[0074] It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.

[0075] Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

[0076] As used herein, an element recited in the singular and proceeded with the word "a" or "an" should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to "one embodiment" of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments "comprising" or "having" an element or a plurality of elements having a particular property may include additional such elements not having that property.

Claims

What is claimed is,1. A central terminal, comprising: a tubular part (40) having front and rear ends opposite in its axial direction, and a central through-hole (401) extending between its front and rear ends; a welding end (41) connected to the rear end of the tubular part (40), used for welding to a conductor core (51) of a cable (5); and a contact end (42) connected to the front end of the tubular part (40) for mating and electrical contact with a mating center terminal, wherein a blocking portion (43) is formed on the peripheral wall of the tubular part (40), which 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 protrusion (4a) is formed on the outer wall surface of the rear end of the tubular part (40), which is used to engage with a snap slot (3a) formed in an insulation core (3) of a connector to lock the central terminal (4) in the insulation core (3).

3. The center terminal according to claim 1, wherein the contact end (42) comprises multiple elastic cantilevers (42a), which are connected to the front end of the tubular part (40) and distributed at intervals in the circumferential direction of the tubular part (40), for electrical contact with the inserted mating center terminal.

4. The center terminal according to claim 1, wherein the center terminal (4) is an integral stamped piece.

5. An electrical connection module, comprising: a cable (5) with a conductor core (51); and the central terminal (4) as claimed in any one of claims 1-4, wherein the welding end (41) of the central terminal (4) is welded to the conductor core (51) of the cable (5).

6. The electrical connection module according to claim 5, further comprising: an insulation core (3) which is formed with a central hole (301), wherein the central terminal (4) is inserted and fixed into the central hole (301) of the insulation core (3).

7. The electrical connection module according to claim 6. wherein a snap slot (3a) is formed in the insulation core (3), and the locking protrusion (4a) on the central terminal (4) is engaged into the snap slot (3a) to lock the central terminal (4) in the insulation core (3).

8. The electrical connection module according to claim 6, further comprising: an outer terminal (2) which is fitted onto the insulation core (3) and electrically connected to a shielding layer of the cable (5), for mating and electrical contact with a mating outer terminal.

9. The electrical connection module according to claim 8, wherein the outer terminal (2) comprises: a cylindrical body (20) with front and rear ends opposite in its axial direction; and a mating part (24) which is connected to the front end of the cylindrical body (20) for mating and electrical contact with the mating outer terminal, wherein the rear end of the cylindrical body (20) is fitted onto the cable (5) and welded to the shielding layer of the cable (5).

10. The electrical connection module according to claim 9, wherein a first positioning flange (21), a second positioning flange (22) and a third positioning flange (23) are circular and formed on the cylindrical body (20), the first positioning flange (21) and the third positioning flange (23) are respectively located at the front and rear ends of the cylindrical body (20), 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); wherein the outer peripheral surfaces (21, 22, 23) of the first, second, and third positioning flanges (21, 22, 23) are used to rest 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 (21, 22, 23) 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 inside the housing (1) will not tilt or shake.

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

13. The electrical connection module according to claim 12, wherein a rivet point (2a) protruding towards the insulation core (3) is formed on the front end of the cylindrical body (20) to increase the bonding strength between the front end of the cylindrical body (20) and the rear end (31) of the insulation core (3).

14. The electrical connection module according to claim 10, wherein the mating part (24) of the outer terminal (2) comprises multiple main elastic arms (24a), which are distributed at intervals in the circumferential direction of the cylindrical body (20); wherein an opening (24b) and an auxiliary elastic arm (24c) located within the opening (24b) are formed on the main elastic arm (24a), the main elastic arm (24a) and the auxiliary elastic arm (24c) are used to make electrical contact with the inserted mating outer terminal simultaneously.

15. The electrical connection module according to claim 10, wherein the first positioning flange (21) and the second positioning flange (22) extend continuously in the circumferential direction of the cylindrical body (20); wherein multiple slots (23a’) are formed on the third positioning flange (23), which are distributed at intervals in the circumferential direction of the cylindrical body (20).

16. The electrical connection module according to claim 9, wherein the outer terminal (2) is an integral stamped piece.

17. A connector, comprising: a housing (1) having an inner cavity (101); and the electrical connection module (100) according to any one of claims 8-16 which is inserted into the inner cavity (101) of the housing (1).

18. The connector according to claim 17, wherein a locking portion (121) is formed in the inner cavity (101) of the housing (1), and the locking portion (121) is axially pressed 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 locking buckle (11) and a slot hole (12) are formed on the outer peripheral wall (10) of the housing (1), wherein the elastic locking buckle (11) is adapted to be moved between a locking position engaged with the slot hole (12) and an unlocking position separated from the slot hole (12); wherein when the elastic locking buckle (11) is moved to the locking position, the end (Ila) of the elastic locking buckle (11) is engaged into a 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 integral injection molded piece.

Images