Terminal and charging device

Abstract

The utility model discloses a terminal and a charging device. The terminal comprises a terminal body which is used for transmitting current and is provided with a matching part; and an insulator injection-molded to the mating portion. The matching part is provided with a hollow inner cavity, a front end opening communicated with the inner cavity is formed in the front end of the matching part, and a window communicated with the inner cavity is formed in the peripheral wall of the matching part. The insulator is injection-molded into the inner cavity of the mating portion and protrudes from the front end of the mating portion through the front port of the mating portion. The insulator is provided with a locking part located in the window of the matching part, a clamping groove is formed in the locking part, and the clamping groove is used for being connected with the elastic buckle in the shell so as to lock the terminal in the shell. According to the utility model, the insulator not only is provided with a protection part for preventing human fingers from touching, but also is provided with a locking part suitable for being jointed with the shell. Therefore, according to the utility model, the insulating cap does not need to be independently manufactured and assembled, and a locking part jointed with the shell does not need to be formed on the terminal body, so that the production efficiency is improved and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to a terminal, a method for manufacturing the terminal, and a charging device including the terminal. Background Technology

[0002] With the development of the new energy vehicle market, competition in charging devices is becoming increasingly fierce, demanding not only higher performance from charging devices but also lower prices. In existing technologies, charging devices (e.g., charging sockets) typically include a housing and power terminals for transmitting charging current, housed in terminal holes within the housing. Existing power terminals are generally made of copper or copper alloys, resulting in high costs. In existing technologies, to position the power terminals within the terminal holes of the housing, a positioning flange is formed at the rear end of the mating portion (11) of the power terminal, increasing material usage and cost. Furthermore, in existing technologies, to achieve a seal between the power terminal and the housing, a sealing element is injection-molded onto the power terminal; however, the waterproof sealing effect of the injection-molded seal is poor. Additionally, in existing technologies, to prevent human fingers from touching the front end of the power terminal, an insulating cap is installed on the front end. Manufacturing and installing the insulating cap separately is very time-consuming, reducing production efficiency. Furthermore, in the prior art, in order to lock the terminal in the housing, a locking part suitable for engaging with the housing needs to be formed on the terminal body, which further reduces production efficiency and increases manufacturing costs. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a terminal is provided. The terminal includes: a terminal body for transmitting current and having a mating portion for mating with a mating terminal; and an insulator injection-molded into the mating portion of the terminal body. The mating portion has a hollow inner cavity, a front port communicating with the inner cavity is formed at the front end of the mating portion, and a window communicating with the inner cavity is formed on the peripheral wall of the mating portion. The insulator is injection-molded into the inner cavity of the mating portion and protrudes from the front end of the mating portion via the front port of the mating portion to prevent human fingers from touching the front end of the terminal body. The insulator has a locking portion located in the window of the mating portion, and a slot is formed on the locking portion for engaging with an elastic snap-fit ​​within a housing to lock the terminal in a terminal hole in the housing.

[0005] According to an exemplary embodiment of the present invention, a pair of windows are formed on the peripheral wall of the mating portion, the pair of windows being opposite each other in the radial direction of the mating portion; the insulator has a pair of locking portions respectively located in the pair of windows, the pair of locking portions being used to engage with a pair of elastic buckles in the housing respectively.

[0006] According to another exemplary embodiment of the present invention, the insulator has a main body portion located in the inner cavity of the mating portion and a protective portion protruding from the front end of the mating portion, the protective portion being used to prevent human fingers from touching the front end of the terminal body.

[0007] According to another exemplary embodiment of the present invention, the protective portion covers the front end of the mating portion and is combined with the front end of the mating portion.

[0008] According to another exemplary embodiment of the present invention, the locking portion is formed on the outer peripheral surface of the main body portion of the insulator and is engaged with the inner peripheral surface of the window of the mating portion.

[0009] According to another exemplary embodiment of the present invention, a slot communicating with the inner cavity of the mating portion is formed on the peripheral wall of the mating portion of the terminal body, and the insulator also has a foolproof protrusion injected into the slot of the mating portion; the foolproof protrusion protrudes from the outside of the mating portion and is used to cooperate with the slot in the housing to ensure that the terminal is inserted into the terminal hole of the housing in the correct orientation.

[0010] According to another exemplary embodiment of the present invention, the insulator further has a front positioning ring injection-molded onto the outer peripheral surface of the mating portion, the anti-fooling protrusion being connected to the front positioning ring and extending forward from the front positioning ring along the axial direction of the mating portion; the front positioning ring engaging with the outer peripheral surface of the mating portion and adapted to mate with the inner peripheral surface of the fixing portion of the terminal hole of the housing for positioning the terminal in the terminal hole of the housing.

[0011] According to another exemplary embodiment of the present invention, a through hole communicating with the inner cavity of the mating portion is formed on the peripheral wall of the mating portion of the terminal body. The insulator also has a rear positioning ring injection-molded on the outer peripheral surface of the mating portion and a bridging portion injection-molded into the through hole of the mating portion. The bridging portion passes through the through hole of the mating portion and connects between the main body and the rear positioning ring. The rear positioning ring is adapted to cooperate with the inner peripheral surface of the fixing portion of the terminal hole of the housing for positioning the terminal in the terminal hole of the housing.

[0012] According to another exemplary embodiment of the present invention, the mating portion of the terminal body is a hollow cylindrical shape, the front positioning ring and the rear positioning ring are close to the rear end of the mating portion and spaced apart axially in the mating portion, and a sealing ring mounting groove for mounting a sealing ring is defined between the front positioning ring and the rear positioning ring.

[0013] According to another exemplary embodiment of the present invention, the terminal further includes a sealing ring, which is installed in the sealing ring mounting groove. The sealing ring is adapted to be radially pressed between the exposed outer peripheral surface of the mating part and the inner peripheral surface of the terminal hole of the housing to achieve a seal between the two.

[0014] According to another exemplary embodiment of the present invention, the mating portion has a closed rear end, and the inner cavity of the mating portion extends from its front port to its closed rear end.

[0015] According to another exemplary embodiment of the present invention, the terminal body is a copper part or a copper alloy part.

[0016] According to another exemplary embodiment of the present invention, the terminal is a power terminal for a charging device for transmitting charging current.

[0017] According to another exemplary embodiment of the present invention, the terminal body further has a welding portion for soldering to a power line or busbar, the mating portion being hollow cylindrical, and the welding portion being flat and connected to the rear end of the mating portion.

[0018] According to another exemplary embodiment of the present invention, the terminal body is an integral stamped part or an integral machined part.

[0019] According to another aspect of the present invention, a terminal manufacturing method is provided for manufacturing the aforementioned terminal. The terminal manufacturing method includes the following steps:

[0020] S10: Provide a terminal body having a mating portion having a hollow inner cavity and a front port, window, slot and through hole communicating with the inner cavity;

[0021] S20: The terminal body is placed into the injection mold and molten injection material is injected into the injection mold to mold an insulator onto the mating portion of the terminal body in one step;

[0022] S30: After the injection molding material has cooled and solidified, the terminal is removed from the injection mold.

[0023] According to an exemplary embodiment of the present invention, the terminal manufacturing method further includes the step of:

[0024] S40: Install the sealing ring into the sealing ring mounting groove between the front and rear positioning rings of the terminal.

[0025] According to another aspect of the present invention, a charging device is provided. The charging device includes: a housing having terminal holes; and the aforementioned terminals being inserted into the terminal holes of the housing.

[0026] According to an exemplary embodiment of the present invention, an elastic buckle is formed in the terminal hole of the housing, and the elastic buckle engages with a groove on the locking portion of the insulator of the terminal to lock the terminal in the terminal hole of the housing.

[0027] According to another exemplary embodiment of the present invention, the charging device is a charging base or a charging gun.

[0028] In the foregoing exemplary embodiments of the present invention, the insulator injection-molded into the terminal body not only has a protective portion to prevent human fingers from touching the front end of the terminal body, but also a locking portion suitable for engagement with the housing. Therefore, the present invention eliminates the need for separate manufacturing and assembly of the insulating cap, and also eliminates the need to form a locking portion on the terminal body for engagement with the housing. Thus, the present invention improves production efficiency and reduces production costs.

[0029] Furthermore, in some of the exemplary embodiments described above according to the present invention, the sealing ring installed between the front positioning ring and the rear positioning ring can effectively achieve a seal between the terminal and the housing.

[0030] Furthermore, in some of the exemplary embodiments described above according to the present invention, the insulator injection molded into the terminal body has a front positioning ring and a rear positioning ring for positioning the terminal in the terminal hole of the housing. Therefore, it is not necessary to form a positioning flange on the terminal body, thereby further improving production efficiency and reducing costs.

[0031] Furthermore, in some of the exemplary embodiments described above according to the present invention, the mating portion of the terminal body has a hollow inner cavity, which can reduce the material used in the terminal body and thus further reduce costs.

[0032] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0033] Figure 1 A perspective view of a terminal according to an exemplary embodiment of the present invention is shown;

[0034] Figure 2 Showing an axial sectional view of a terminal according to an exemplary embodiment of the present invention;

[0035] Figure 3 An exploded view of a terminal according to an exemplary embodiment of the present invention is shown;

[0036] Figure 4 This shows an axially anatomically anatomically oriented view of a terminal according to an exemplary embodiment of the present invention;

[0037] Figure 5 Showing another axial sectional view of a terminal according to an exemplary embodiment of the present invention;

[0038] Figure 6 Showing another axial anatomical view of a terminal according to an exemplary embodiment of the present invention;

[0039] Figure 7 This shows a cross-sectional view of a charging device according to an exemplary embodiment of the present invention. Detailed Implementation

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

[0041] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0042] According to a general technical concept of the present invention, a terminal is provided. The terminal includes: a terminal body for transmitting current and having a mating portion for mating with a mating terminal; and an insulator injection-molded into the mating portion of the terminal body. The mating portion has a hollow inner cavity, a front port communicating with the inner cavity is formed at the front end of the mating portion, and a window communicating with the inner cavity is formed on the peripheral wall of the mating portion. The insulator is injection-molded into the inner cavity of the mating portion and protrudes from the front end of the mating portion via the front port of the mating portion to prevent human fingers from touching the front end of the terminal body. The insulator has a locking portion located in the window of the mating portion, and a slot is formed on the locking portion for engaging with an elastic snap in the housing to lock the terminal in the terminal hole of the housing.

[0043] According to another overall technical concept of this utility model, a terminal manufacturing method is provided for manufacturing the aforementioned terminal. The terminal manufacturing method includes the following steps: providing a terminal body having a mating portion, the mating portion having a hollow inner cavity and a front port, window, slot, and through hole communicating with the inner cavity; placing the terminal body into an injection mold and injecting molten injection molding material into the injection mold to injection mold an insulator onto the mating portion of the terminal body in a single operation; after the injection molding material cools and solidifies, removing the terminal from the injection mold.

[0044] According to another general technical concept of the present invention, a charging device is provided. The charging device includes: a housing having terminal holes; and the aforementioned terminals being inserted into the terminal holes of the housing.

[0045] Figure 1 A perspective view of a terminal 100 according to an exemplary embodiment of the present invention is shown; Figure 2 Showing an axial sectional view of a terminal 100 according to an exemplary embodiment of the present invention; Figure 3 An exploded view of a terminal 100 according to an exemplary embodiment of the present invention is shown; Figure 4 This shows an axially anatomically oriented view of a terminal 100 according to an exemplary embodiment of the present invention; Figure 5 Showing another axial sectional view of a terminal 100 according to an exemplary embodiment of the present invention; Figure 6 Showing another axially anatomical view of a terminal 100 according to an exemplary embodiment of the present invention; Figure 7 This shows a cross-sectional view of a charging device according to an exemplary embodiment of the present invention.

[0046] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, a terminal 100 is disclosed. The terminal 100 includes a terminal body 10 and an insulator 20. The terminal body 10 is used for transmitting current and has a mating portion 11 for mating with a mating terminal (not shown). The insulator 20 is injection molded into the mating portion 11 of the terminal body 10. The mating portion 11 has a hollow inner cavity 101, a front port communicating with the inner cavity 101 is formed at the front end of the mating portion 11, and a window 102 communicating with the inner cavity 101 is formed on the peripheral wall of the mating portion 11. The insulator 20 is injection molded into the inner cavity 101 of the mating portion 11 and protrudes from the front end of the mating portion 11 through the front port of the mating portion 11 to prevent human fingers from touching the front end of the terminal body 10. The insulator 20 has a locking part 23 located in the window 102 of the mating part 11, and a slot 231 is formed on the locking part 23. The slot 231 is used to engage with the elastic buckle 41 inside the housing 4 to lock the terminal 100 in the terminal hole 40 of the housing 4.

[0047] like Figures 1 to 7 As shown, in the illustrated embodiment, a pair of windows 102 are formed on the peripheral wall of the mating portion 11, and the pair of windows 102 are radially opposite to each other in the mating portion 11. The insulator 20 has a pair of locking portions 23 located in the pair of windows 102 respectively, and the pair of locking portions 23 are used to engage with a pair of elastic buckles 41 in the housing 4 respectively.

[0048] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulator 20 has a main body 21 located in the inner cavity 101 of the mating portion 11 and a protective portion 22 protruding from the front end of the mating portion 11, the protective portion 22 being used to prevent human fingers from touching the front end of the terminal body 10.

[0049] like Figures 1 to 7 As shown, in the illustrated embodiment, the protective part 22 covers the front end of the mating part 11 and is combined with the front end of the mating part 11.

[0050] like Figures 1 to 7 As shown, in the illustrated embodiment, the locking part 23 is formed on the outer peripheral surface of the main body part 21 of the insulator 20 and is engaged with the inner peripheral surface of the window 102 of the mating part 11.

[0051] like Figures 1 to 7 As shown in the illustrated embodiment, a slot 103 communicating with the inner cavity 101 of the mating portion 11 is formed on the peripheral wall of the mating portion 11 of the terminal body 10. The insulator 20 also has a foolproof protrusion 24 injected into the slot 103 of the mating portion 11. The foolproof protrusion 24 protrudes from the outside of the mating portion 11 and is used to mate with a slot (not shown) inside the housing 4 to ensure that the terminal 100 is inserted into the terminal hole 40 of the housing 4 in the correct orientation.

[0052] like Figures 1 to 7 As shown in the illustrated embodiment, the insulator 20 further includes a front positioning ring 25 injection-molded onto the outer peripheral surface of the mating portion 11. A foolproof protrusion 24 is connected to the front positioning ring 25 and extends forward along the axial direction of the mating portion 11 from the front positioning ring 25. The front positioning ring 25 engages with the outer peripheral surface of the mating portion 11 and is adapted to mate with the inner peripheral surface of the fixing portion of the terminal hole 40 of the housing 4, for positioning the terminal 100 in the terminal hole 40 of the housing 4.

[0053] like Figures 1 to 7As shown in the illustrated embodiment, a through hole 104 communicating with the inner cavity 101 of the mating portion 11 is also formed on the peripheral wall of the mating portion 11 of the terminal body 10. The insulator 20 also has a rear positioning ring 26 injection-molded on the outer peripheral surface of the mating portion 11 and a bridging portion 27 injection-molded into the through hole 104 of the mating portion 11. The bridging portion 27 passes through the through hole 104 of the mating portion 11 and connects between the main body portion 21 and the rear positioning ring 26. The rear positioning ring 26 is adapted to mate with the inner peripheral surface of the fixing portion of the terminal hole 40 of the housing 4 for positioning the terminal 100 in the terminal hole 40 of the housing 4.

[0054] like Figures 1 to 7 As shown in the illustrated embodiment, the mating portion 11 of the terminal body 10 is a hollow cylindrical shape. The front positioning ring 25 and the rear positioning ring 26 are close to the rear end of the mating portion 11 and spaced apart axially in the mating portion 11. A sealing ring mounting groove 203 for mounting the sealing ring 3 is defined between the front positioning ring 25 and the rear positioning ring 26.

[0055] like Figures 1 to 7 As shown in the illustrated embodiment, terminal 100 further includes a sealing ring 3, which is installed in a sealing ring mounting groove 203. The sealing ring 3 is adapted to be radially pressed between the exposed outer peripheral surface of mating portion 11 and the inner peripheral surface of terminal hole 40 of housing 4 to achieve a seal between the two.

[0056] like Figures 1 to 7 As shown in the illustrated embodiment, since there is no injection-molded insulator in the sealing area where the mating portion 11 of the terminal body 10 contacts the sealing ring 3, the sealing performance between the mating portion 11 of the terminal body 10 and the sealing ring 3 can be guaranteed. In the illustrated embodiment, even if the front positioning ring 25 and the rear positioning ring 26 injection-molded on the mating portion 11 of the terminal body 10 undergo slight deformation, it will not affect the sealing performance of the sealing ring 3. Therefore, in this application, there are no special requirements for the material properties of the insulating material 20, which expands the range of injection molding materials selected for the injection-molded insulator 20, thereby reducing manufacturing costs.

[0057] like Figures 1 to 7 As shown, in the illustrated embodiment, the mating part 11 has a closed rear end, and the inner cavity 101 of the mating part 11 extends from its front port to its closed rear end.

[0058] like Figures 1 to 7 As shown, in the illustrated embodiment, the terminal body 10 can be made of copper or copper alloy.

[0059] like Figures 1 to 7 As shown, in the illustrated embodiment, terminal 100 can be a power terminal for a charging device used to transmit charging current.

[0060] like Figures 1 to 7As shown, in the illustrated embodiment, the terminal body 10 also has a soldering portion 12 for soldering to a power line (not shown) or a busbar (not shown), the mating portion 11 is hollow cylindrical, and the soldering portion 12 is flat and connected to the rear end of the mating portion 11.

[0061] like Figures 1 to 7 As shown in the illustrated embodiment, the terminal body 10 is an integral stamped part or an integral machined part.

[0062] like Figures 1 to 7 As shown, in another exemplary embodiment of this utility model, a terminal manufacturing method is also disclosed. This terminal manufacturing method is used to manufacture the aforementioned terminal 100. The terminal manufacturing method includes the following steps:

[0063] S10: A terminal body 10 is provided, the terminal body 10 having a mating part 11, the mating part 11 having a hollow inner cavity 101 and a front port, a window 102, a slot 103 and a through hole 104 communicating with the inner cavity 101.

[0064] S20: The terminal body 10 is placed into the injection mold and molten injection material is injected into the injection mold to mold the insulator 20 onto the mating part 11 of the terminal body 10 in one step.

[0065] S30: After the injection molding material has cooled and solidified, remove the terminal from the injection mold.

[0066] like Figures 1 to 7 As shown in the illustrated embodiment, the aforementioned terminal manufacturing method further includes the step of:

[0067] S40: Install the sealing ring 3 into the sealing ring mounting groove 203 between the front positioning ring 25 and the rear positioning ring 26 of the terminal 100.

[0068] like Figures 1 to 7 As shown, in another exemplary embodiment of this utility model, a charging device is also disclosed. The charging device includes a housing 4 and the aforementioned terminals 100. The housing 4 has terminal holes 40 formed therein. The terminals 100 are inserted into the terminal holes 40 of the housing 4.

[0069] like Figures 1 to 7 As shown in the illustrated embodiment, an elastic buckle 41 is formed in the terminal hole 40 of the housing 4. The elastic buckle 41 engages with the slot 231 on the locking portion 23 of the insulator 20 of the terminal 100 to lock the terminal 100 in the terminal hole 40 of the housing 4.

[0070] like Figures 1 to 7 As shown in the illustrated embodiment, the charging device can be a charging dock or a charging gun.

[0071] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0072] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0073] While some embodiments of the general concept of this utility model have been shown and described, those skilled 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 this utility model, the scope of which is defined by the claims and their equivalents.

[0074] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A terminal characterized by comprising: Comprising: a terminal body (10) for transmitting current and having a mating portion (11) for mating with a mating portion of a mating terminal; and an insulator (20) injection-molded to the mating portion (11) of the terminal body (10), the mating portion (11) having a hollow inner cavity (101), a front end port formed at a front end of the mating portion (11) and communicating with the inner cavity (101), and a window (102) formed on a peripheral wall of the mating portion (11) and communicating with the inner cavity (101), the insulator (20) being injection-molded into the inner cavity (101) of the mating portion (11) and protruding from the front end of the mating portion (11) via the front end port of the mating portion (11) for preventing a human finger from touching the front end of the terminal body (10), the insulator (20) having a locking portion (23) located in the window (102) of the mating portion (11) and formed with a clamping groove (231) for engaging with an elastic catch (41) in a housing (4) to lock the terminal (100) in a terminal hole (40) of the housing (4).

2. The terminal according to claim 1, wherein: a pair of windows (102) are formed on the peripheral wall of the mating portion (11) and opposed in a radial direction of the mating portion (11), the insulator (20) has a pair of locking portions (23) located in the pair of windows (102), respectively, for engaging with a pair of elastic catches (41) in the housing (4), respectively.

3. The terminal according to claim 1, wherein: the insulator (20) has a main body portion (21) located in the inner cavity (101) of the mating portion (11) and a guard portion (22) protruding from the front end of the mating portion (11) for preventing a human finger from touching the front end of the terminal body (10).

4. The terminal according to claim 3, wherein: the guard portion (22) covers and is combined with the front end of the mating portion (11).

5. The terminal according to claim 3, wherein: the locking portion (23) is formed on an outer peripheral surface of the main body portion (21) of the insulator (20) and combined with an inner peripheral surface of the window (102) of the mating portion (11).

6. The terminal according to claim 3, wherein: a slot hole (103) is further formed on the peripheral wall of the mating portion (11) of the terminal body (10) and communicates with the inner cavity (101) of the mating portion (11), and the insulator (20) further has a foolproof protrusion (24) injection-molded into the slot hole (103) of the mating portion (11); the foolproof protrusion (24) protrudes from an outer side of the mating portion (11) and cooperates with an insertion slot in the housing (4) to ensure that the terminal (100) is inserted into the terminal hole (40) of the housing (4) in a correct orientation.

7. The terminal according to claim 6, characterized in that: the insulator (20) further has a front positioning ring (25) injection-molded on the outer circumferential surface of the mating portion (11), and the fool-proof protrusion (24) is connected to the front positioning ring (25) and extends forward along the axial direction of the mating portion (11) from the front positioning ring (25); the front positioning ring (25) is combined with the outer circumferential surface of the mating portion (11) and is adapted to cooperate with the inner circumferential surface of the fixed portion of the terminal hole (40) of the housing (4), for positioning the terminal (100) in the terminal hole (40) of the housing (4).

8. The terminal according to claim 7, characterized in that: a through hole (104) in communication with the inner cavity (101) of the mating portion (11) is further formed on the circumferential wall of the mating portion (11) of the terminal body (10), and the insulator (20) further has a rear positioning ring (26) injection-molded on the outer circumferential surface of the mating portion (11) and a bridge portion (27) injection-molded into the through hole (104) of the mating portion (11); the bridge portion (27) passes through the through hole (104) of the mating portion (11) and is connected between the main body portion (21) and the rear positioning ring (26), and the rear positioning ring (26) is adapted to cooperate with the inner circumferential surface of the fixed portion of the terminal hole (40) of the housing (4), for positioning the terminal (100) in the terminal hole (40) of the housing (4).

9. The terminal according to claim 8, characterized in that: the mating portion (11) of the terminal body (10) is in a hollow cylindrical shape, the front positioning ring (25) and the rear positioning ring (26) are close to the rear end of the mating portion (11) and are spaced apart in the axial direction of the mating portion (11), and a sealing ring mounting groove (203) for mounting a sealing ring (3) is defined between the front positioning ring (25) and the rear positioning ring (26).

10. The terminal of claim 9, wherein Further comprising: a sealing ring (3) mounted into the sealing ring mounting groove (203), the sealing ring (3) is adapted to be radially extruded between the exposed outer circumferential surface of the mating portion (11) and the inner circumferential surface of the terminal hole (40) of the housing (4), to achieve sealing therebetween.

11. The terminal according to claim 1, characterized in that: the mating portion (11) has a closed rear end, and the inner cavity (101) of the mating portion (11) extends from the front end thereof to the closed rear end thereof.

12. The terminal of claim 1, wherein: the terminal body (10) is made of copper or a copper alloy.

13. The terminal of claim 1, wherein: the terminal (100) is a power terminal for transmitting charging current for a charging device.

14. The terminal according to claim 1, characterized in that: the terminal body (10) further has a welding portion (12) for welding to a power line or a bus bar, and the mating portion (11) is in a hollow cylindrical shape, and the welding portion (12) is in a flat shape and is connected to the rear end of the mating portion (11).

15. The terminal of any of claims 1-14, wherein: the terminal body (10) is an integral stamping or an integral machining.

16. A charging device, characterized by comprising: a housing (4) formed with a terminal hole (40); and The terminal (100) according to any one of claims 1 to 15 is inserted into the terminal hole (40) of the housing (4).

17. The charging device of claim 16, wherein: An elastic buckle (41) is formed in the terminal hole (40) of the housing (4), and the elastic buckle (41) engages with the clamping groove (231) on the locking portion (23) of the insulator (20) of the terminal (100) to lock the terminal (100) in the terminal hole (40) of the housing (4).

18. The charging device of claim 16, wherein: The charging device is a charging base or a charging gun.

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