Terminal, electric connection assembly and electric connection product

Abstract

The invention discloses a terminal, an electric connection assembly and an electric connection product. And the terminal is suitable for being inserted into a mounting hole in the insulating shell. The terminal comprises a terminal body which is an integrated punch forming piece and comprises a cylindrical part with a splicing gap; and the injection molding sealing element is arranged on the cylindrical part in an injection molding manner and is used for sealing the mounting hole and the inner cavity of the cylindrical part. An opening allowing injection molding materials used for forming the injection molding sealing piece to enter is formed in the circumferential wall of the barrel-shaped part, so that the injection molding materials can enter an inner cavity of the barrel-shaped part through the opening and seal the inner cavity of the barrel-shaped part. The cylindrical part is provided with an injection molding area combined with the injection molding sealing piece, and a splicing gap of the injection molding area of the cylindrical part is filled with sealant. The waterproof sealing performance can be improved.

Description

Technical Field

[0001] The present invention relates to a terminal, an electrical connection assembly including the terminal, and an electrical connection product including the terminal or the electrical connection assembly. Background Technology

[0002] In existing technology, to charge the batteries in new energy vehicles, a charging socket suitable for mates with a charging gun is typically installed on the vehicle. A female charging terminal is usually housed within the insulating shell of the charging socket, while a male charging terminal suitable for mates with the female charging terminal in the charging gun is located within the charging gun. The female charging terminal typically includes a cylindrical terminal body, a cage-like elastic contact inserted into the inner cavity of the terminal body, a welded tail connected to the rear end of the terminal body, and an injection-molded seal formed on the terminal body. This seal is used to seal the terminal mounting holes in the insulating shell of the charging socket, preventing moisture and dust from entering the interior of the charging socket through these holes. In existing technology, the injection-molded seal is usually directly bonded to the surface of the terminal body. Because the injection-molded seal and the terminal body are made of different materials, their coefficients of thermal expansion differ. Under the influence of thermal expansion and contraction, gaps can easily appear between them, reducing the waterproof sealing performance. Summary of the Invention

[0003] The purpose of this invention 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 is adapted to be inserted into a mounting hole within an insulating housing. The terminal includes: a terminal body, which is an integrally stamped part and includes a cylindrical portion having a splice gap; and an injection-molded sealant, injection-molded onto the cylindrical portion, for sealing the mounting hole and the inner cavity of the cylindrical portion. An opening is formed on the peripheral wall of the cylindrical portion to allow injection molding material for forming the injection-molded sealant to enter, such that the injection molding material can enter through the opening into the inner cavity of the cylindrical portion and seal the inner cavity of the cylindrical portion. The cylindrical portion of the terminal body has an injection-molded area that engages with the injection-molded sealant, and the splice gap of the injection-molded area of ​​the cylindrical portion of the terminal body is filled with sealant to seal the splice gap of the injection-molded area of ​​the cylindrical portion.

[0005] According to an exemplary embodiment of the present invention, at least a portion of the surface of the injection molding area of ​​the cylindrical portion of the terminal body is an uneven, rough surface to enhance the bonding strength between the terminal body and the injection molding seal.

[0006] According to another exemplary embodiment of the present invention, at least a portion of the injection molding area of ​​the cylindrical portion of the terminal body is formed with grooves, indentations, recesses, protrusions or roll patterns.

[0007] According to another exemplary embodiment of the present invention, at least a portion of the surface of the injection molding area of ​​the cylindrical portion of the terminal body is etched using plasma gas to increase the roughness of the at least a portion of the surface.

[0008] According to another exemplary embodiment of the present invention, through holes and / or slots for engaging with the injection-molded seal are formed on the peripheral wall of the injection-molded area of ​​the cylindrical portion of the terminal body, so as to increase the bonding strength between the terminal body and the injection-molded seal.

[0009] According to another exemplary embodiment of the present invention, a plurality of through holes and / or a plurality of arc-shaped slots are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion of the terminal body.

[0010] According to another exemplary embodiment of the present invention, the opening is arc-shaped and extends circumferentially along the cylindrical portion, and a pair of openings are formed on the cylindrical portion, the pair of openings being spaced apart from each other in the axial direction of the cylindrical portion.

[0011] According to another exemplary embodiment of the invention, the cylindrical portion has an arcuate bridge portion located between the pair of openings, the arcuate bridge portion being embedded in the injection-molded seal.

[0012] According to another exemplary embodiment of the invention, the cylindrical portion of the terminal body has a front end and a rear end opposite each other in its axial direction, the front portion of the cylindrical portion being used to mate with an inserted mating terminal, and the injection-molded seal being formed on the rear portion of the cylindrical portion.

[0013] According to another exemplary embodiment of the present invention, a plurality of contact spring arms are formed on the peripheral wall of the cylindrical portion, and the plurality of contact spring arms extend obliquely into the inner cavity of the cylindrical portion to make electrical contact with mating terminals inserted into the inner cavity of the cylindrical portion.

[0014] According to another exemplary embodiment of the present invention, the terminal further includes: an elastic contact element, which is inserted into the inner cavity of the cylindrical portion and makes electrical contact with the inner wall surface of the cylindrical portion, the elastic contact element being an integrally stamped part and adapted to make electrical contact with a mating terminal inserted into the inner cavity of the cylindrical portion.

[0015] According to another exemplary embodiment of the present invention, the resilient contact includes: a pair of annular ends that are in electrical contact with the inner wall surface of the cylindrical portion; and a plurality of resilient arms connected between the pair of annular ends, the plurality of resilient arms being spaced apart in the circumferential direction of the annular ends for making electrical contact with the outer peripheral surface of the inserted mating terminal.

[0016] According to another exemplary embodiment of the invention, the annular end of the elastic contact is shaped like a dome, and the elastic arm is an inwardly arched arc, such that the elastic contact can elastically deform in its radial and axial directions.

[0017] According to another exemplary embodiment of the present invention, a plurality of contact protrusions are formed on the outer peripheral surface of the annular end, the plurality of contact protrusions being spaced apart and distributed throughout the entire outer peripheral surface of the annular end for electrical contact with the inner wall surface of the cylindrical portion.

[0018] According to another exemplary embodiment of the present invention, a front positioning protrusion and a rear positioning protrusion are formed on the inner wall surface of the cylindrical portion, the front positioning protrusion and the rear positioning protrusion being adapted to abut against a pair of annular ends of the elastic contact member to axially position the elastic contact member.

[0019] According to another exemplary embodiment of the present invention, a locking spring is formed on the peripheral wall of the cylindrical portion of the terminal body, the locking spring being used to lock the terminal in the mounting hole of the insulating shell.

[0020] According to another exemplary embodiment of the present invention, the terminal body further has a connecting portion connected to the rear end of the cylindrical portion, the connecting portion being used for electrical connection to a cable.

[0021] According to another exemplary embodiment of the present invention, the connecting portion of the terminal body is flat and adapted to be soldered to one end of the cable for electrical connection with the cable.

[0022] According to another exemplary embodiment of the present invention, the connecting portion of the terminal body is adapted to be crimped onto one end of the cable for electrical connection with the cable.

[0023] According to another exemplary embodiment of the present invention, an outwardly protruding guide key is formed on the front end of the cylindrical portion of the terminal body. The guide key is used to cooperate with the guide groove in the insulating shell to guide the terminal to be inserted into the mounting hole in the insulating shell in the correct orientation.

[0024] According to another exemplary embodiment of the present invention, the injection-molded seal is made of self-adhesive silicone to increase the bonding force between the injection-molded seal and the cylindrical portion of the terminal body.

[0025] According to another exemplary embodiment of the present invention, a layer of sealant is applied to the surface of the injection molding area of ​​the cylindrical portion of the terminal body.

[0026] According to another exemplary embodiment of the present invention, a hydrophilic coating is formed on the surface of the injection molding area of ​​the cylindrical portion of the terminal body, and a layer of sealant is applied to the hydrophilic coating.

[0027] According to another exemplary embodiment of the present invention, the hydrophilic plating layer is a tin plating layer or a silver plating layer electroplated on the surface of the injection molding area of ​​the cylindrical portion of the terminal body.

[0028] According to another exemplary embodiment of the present invention, the hydrophilic plating layer is a matte tin layer or a bright tin layer electroplated on the surface of the injection molding area of ​​the cylindrical portion of the terminal body.

[0029] According to another exemplary embodiment of the present invention, the injection-molded seal includes: a main body portion, which is cylindrical and engages with the peripheral wall of the cylindrical portion of the terminal body; and a pair of reinforcing protrusions, which are respectively formed on the front end face and the rear end face of the main body portion, the reinforcing protrusions being annular or arc-shaped and engaging with the peripheral wall of the cylindrical portion of the terminal body to increase the bonding strength between the injection-molded seal and the terminal body.

[0030] According to another exemplary embodiment of the present invention, the peripheral wall of the injection molding area of ​​the cylindrical portion of the terminal body is embedded in the main body of the injection molding seal and the pair of reinforcing protrusions; the reinforcing protrusions have a predetermined width in the axial direction of the cylindrical portion and a predetermined length in the circumferential direction of the cylindrical portion.

[0031] According to another exemplary embodiment of the present invention, the injection-molded seal further includes: a plurality of annular sealing ribs formed on the outer peripheral surface of the main body and spaced apart in the axial direction, the annular sealing ribs being used for interference fit with the inner wall surface of the mounting hole of the insulating shell to achieve a seal between the injection-molded seal and the inner wall surface of the mounting hole.

[0032] According to another aspect of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: the aforementioned terminal having a connecting portion connected to the rear end of a cylindrical portion thereof; and a cable being crimped or soldered to the connecting portion of the terminal.

[0033] According to another aspect of the present invention, an electrical connection product is provided. The electrical connection product includes: an insulating shell having a mounting hole; and the aforementioned terminal or the aforementioned electrical connection assembly, the terminal being inserted into the mounting hole of the insulating shell, the injection-molded seal sealing the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

[0034] According to an exemplary embodiment of the present invention, the electrical connection product is a connector, a charging socket, or a charging gun.

[0035] In the aforementioned exemplary embodiments of the present invention, by filling the joint gap of the injection molding area of ​​the cylindrical portion of the terminal body with sealant, the joint gap of the injection molding area of ​​the cylindrical portion is sealed, thereby improving the waterproof sealing performance.

[0036] In some of the exemplary embodiments of the present invention, a layer of sealant is applied to the surface of the injection molding area of ​​the cylindrical portion of the terminal body, thereby enabling the injection-molded seal to be firmly bonded to the terminal body, so that no gaps appear between the two, further improving the waterproof sealing performance.

[0037] Other objects and advantages of the 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

[0038] Figure 1 A perspective view of a terminal according to a first exemplary embodiment of the present invention is shown;

[0039] Figure 2 An axial sectional view of a terminal according to a first exemplary embodiment of the present invention is shown;

[0040] Figure 3 Showing a anatomical view of the terminals according to a first exemplary embodiment of the present invention;

[0041] Figure 4 An exploded view of a terminal as seen from above, according to a first exemplary embodiment of the present invention;

[0042] Figure 5 An exploded view of a terminal as seen from below, according to a first exemplary embodiment of the present invention;

[0043] Figure 6 A perspective view of a terminal according to a second exemplary embodiment of the present invention is shown;

[0044] Figure 7 An axial sectional view of a terminal according to a second exemplary embodiment of the present invention is shown;

[0045] Figure 8 An exploded view of the terminals according to a second exemplary embodiment of the present invention is shown;

[0046] Figure 9 Showing a anatomical view of a terminal according to a second exemplary embodiment of the present invention;

[0047] Figure 10 A perspective view of a terminal according to a third exemplary embodiment of the present invention is shown;

[0048] Figure 11 An axial cross-sectional view of a terminal according to a third exemplary embodiment of the present invention is shown;

[0049] Figure 12An exploded view of a terminal according to a third exemplary embodiment of the present invention is shown;

[0050] Figure 13 This shows an anatomical view of a terminal according to a third exemplary embodiment of the present invention. Detailed Implementation

[0051] The technical solution of the present invention 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 the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0052] 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.

[0053] According to a general technical concept of the present invention, a terminal is provided. The terminal is adapted to be inserted into a mounting hole within an insulating housing. The terminal includes: a terminal body, which is an integrally stamped part and includes a cylindrical portion having a splice gap; and an injection-molded sealant, injection-molded onto the cylindrical portion, for sealing the mounting hole and the inner cavity of the cylindrical portion. An opening is formed on the peripheral wall of the cylindrical portion to allow injection molding material for forming the injection-molded sealant to enter, such that the injection molding material can enter through the opening into the inner cavity of the cylindrical portion and seal the inner cavity of the cylindrical portion. The cylindrical portion of the terminal body has an injection-molded area that engages with the injection-molded sealant, and the splice gap of the injection-molded area of ​​the cylindrical portion of the terminal body is filled with sealant to seal the splice gap of the injection-molded area of ​​the cylindrical portion.

[0054] According to another general technical concept of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: the aforementioned terminal having a connecting portion connected to the rear end of a cylindrical portion thereof; and a cable, the connecting portion being crimped or soldered to the terminal.

[0055] According to another general technical concept of the present invention, an electrical connection product is provided. The electrical connection product includes: an insulating shell having a mounting hole; and the aforementioned terminal or the aforementioned electrical connection assembly, the terminal being inserted into the mounting hole of the insulating shell, and an injection-molded seal sealing the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

[0056] Figures 1 to 5 A first embodiment according to the present invention is shown. Wherein, Figure 1A perspective view of a terminal according to a first exemplary embodiment of the present invention is shown; Figure 2 An axial sectional view of a terminal according to a first exemplary embodiment of the present invention is shown; Figure 3 Showing a anatomical view of the terminals according to a first exemplary embodiment of the present invention; Figure 4 An exploded view of a terminal as seen from above, according to a first exemplary embodiment of the present invention; Figure 5 An exploded view of a terminal as seen from below, according to a first exemplary embodiment of the present invention.

[0057] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, a terminal is disclosed. The terminal is adapted to be inserted into a mounting hole (not shown) within an insulating housing (not shown). The terminal includes a terminal body 1 and an injection-molded seal 2. The terminal body 1 is an integrally stamped part and includes a cylindrical portion 10 having a splice gap 10f. The injection-molded seal 2 is injection-molded onto the cylindrical portion 10 for sealing the mounting hole of the insulating housing and the inner cavity of the cylindrical portion 10. An opening 101 is formed on the peripheral wall of the cylindrical portion 10 to allow injection molding material for forming the injection-molded seal 2 to enter, such that the injection molding material can enter the inner cavity of the cylindrical portion 10 through the opening 101 and seal the inner cavity of the cylindrical portion 10. The cylindrical portion 10 of the terminal body 1 has an injection-molded area that engages with the injection-molded seal 2, and the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10.

[0058] like Figures 1 to 5 As shown in the illustrated embodiment, at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 has an uneven, rough surface to enhance the bonding strength between the terminal body 1 and the injection molding seal 2.

[0059] like Figures 1 to 5 As shown, in the illustrated embodiment, at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is formed with grooves, indentations, recesses, protrusions, or rolled patterns 10b (see [reference]). Figure 6-13 For example, in an exemplary embodiment of the present invention, at least a portion of the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 can be etched using plasma gas to increase the surface area of ​​at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0060] like Figures 1 to 5 As shown in the illustrated embodiment, through holes and / or slots 10a for engaging with the injection-molded seal 2 are formed on the peripheral wall of the injection-molded area of ​​the cylindrical portion 10 of the terminal body 1, thereby increasing the bonding strength between the terminal body 1 and the injection-molded seal 2.

[0061] like Figures 1 to 5 As shown in the illustrated embodiment, a plurality of through holes and / or a plurality of arc-shaped slots 10a are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0062] like Figures 1 to 5 As shown in the illustrated embodiment, the opening 101 is arc-shaped and extends circumferentially along the cylindrical portion 10. A pair of openings 101 are formed on the cylindrical portion 10, and the pair of openings 101 are spaced apart from each other in the axial direction of the cylindrical portion 10.

[0063] like Figures 1 to 5 As shown, in the illustrated embodiment, the cylindrical portion 10 has an arcuate bridge portion 102 located between a pair of openings 101, the arcuate bridge portion 102 being embedded in the injection-molded seal 2.

[0064] like Figures 1 to 5 As shown in the illustrated embodiment, the cylindrical portion 10 of the terminal body 1 has a front end and a rear end opposite each other in its axial direction. The front portion of the cylindrical portion 10 is used to mate with the inserted mating terminal, and the injection-molded seal 2 is formed on the rear portion of the cylindrical portion 10.

[0065] like Figures 1 to 5 As shown in the illustrated embodiment, a plurality of contact spring arms 11 are formed on the peripheral wall of the cylindrical portion 10. The plurality of contact spring arms 11 extend obliquely into the inner cavity of the cylindrical portion 10 to make electrical contact with the mating terminals inserted into the inner cavity of the cylindrical portion 10.

[0066] like Figures 1 to 5 As shown in the illustrated embodiment, a locking spring 12 is formed on the peripheral wall of the cylindrical portion 10 of the terminal body 1. The locking spring 12 is used to lock the terminal in the mounting hole of the insulating shell.

[0067] like Figures 1 to 5 As shown, in the illustrated embodiment, the terminal body 1 further has a connecting portion 14 connected to the rear end of the cylindrical portion 10 (see [reference]). Figure 6-13 The connecting part 14 is used for electrical connection to a cable (not shown).

[0068] like Figures 1 to 5 As shown, in the illustrated embodiment, the connecting portion 14 of the terminal body 1 is flat and adapted to be soldered to one end of the cable for electrical connection with the cable.

[0069] like Figures 1 to 5 As shown, in the illustrated embodiment, the connecting portion 14 of the terminal body 1 is adapted to be crimped onto one end of the cable for electrical connection with the cable.

[0070] like Figures 1 to 5As shown in the illustrated embodiment, an outwardly protruding guide key 13 is formed on the front end of the cylindrical portion 10 of the terminal body 1. The guide key 13 is used to cooperate with the guide groove in the insulating shell to guide the terminal to be inserted into the mounting hole in the insulating shell in the correct orientation.

[0071] like Figures 1 to 5 As shown in the illustrated embodiment, the injection-molded seal 2 is made of self-adhesive silicone to increase the bonding force between the injection-molded seal 2 and the cylindrical portion 10 of the terminal body 1.

[0072] like Figures 1 to 5 As shown, in the illustrated embodiment, a layer of sealant is applied to the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0073] like Figures 1 to 5 As shown in the illustrated embodiment, a hydrophilic coating is formed on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1, and a layer of sealant is applied to the hydrophilic coating.

[0074] like Figures 1 to 5 As shown, in the illustrated embodiment, the hydrophilic plating layer is a tin plating layer or a silver plating layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0075] like Figures 1 to 5 As shown in the illustrated embodiment, the hydrophilic plating layer is a matte tin layer or a bright tin layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0076] like Figures 1 to 5 As shown in the illustrated embodiment, the injection-molded seal 2 includes a main body 20 and a pair of reinforcing protrusions 21. The main body 20 is cylindrical and engages with the peripheral wall of the cylindrical portion 10 of the terminal body 1. The pair of reinforcing protrusions 21 are respectively formed on the front and rear faces of the main body 20. The reinforcing protrusions 21 are annular or arc-shaped and engage with the peripheral wall of the cylindrical portion 10 of the terminal body 1 to increase the bonding strength between the injection-molded seal 2 and the terminal body 1.

[0077] like Figures 1 to 5 As shown in the illustrated embodiment, the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is embedded in the main body portion 20 and a pair of reinforcing protrusions 21 of the injection molding seal 2. The reinforcing protrusions 21 have a predetermined width in the axial direction of the cylindrical portion 10 and a predetermined length in the circumferential direction of the cylindrical portion 10.

[0078] like Figures 1 to 5As shown in the illustrated embodiment, the injection-molded seal 2 further includes a plurality of annular sealing ribs 22, which are formed on the outer peripheral surface of the main body 20 and spaced apart axially. The annular sealing ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating shell to achieve a seal between the injection-molded seal 2 and the inner wall surface of the mounting hole.

[0079] like Figures 1 to 5 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This electrical connection assembly includes the aforementioned terminal and a cable. The terminal has a connection portion 14 connected to the rear end of the cylindrical portion 10 of its terminal body 1. The cable is crimped or soldered to the connection portion 14 of the terminal.

[0080] like Figures 1 to 5 As shown, in another exemplary embodiment of the present invention, an electrical connection product is also disclosed. The electrical connection product includes: an insulating shell (not shown) and the aforementioned terminals or the aforementioned electrical connection assembly. A mounting hole is formed within the insulating shell. The terminals are inserted into the mounting hole of the insulating shell, and an injection-molded seal 2 seals the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

[0081] like Figures 1 to 5 As shown in the illustrated embodiment, the electrical connection product can be a connector, a charging dock, or a charging gun.

[0082] Figures 6 to 9 A second embodiment according to the present invention is shown. Wherein, Figure 6 A perspective view of a terminal according to a second exemplary embodiment of the present invention is shown; Figure 7 An axial sectional view of a terminal according to a second exemplary embodiment of the present invention is shown; Figure 8 An exploded view of the terminals according to a second exemplary embodiment of the present invention is shown; Figure 9 This shows a anatomical view of a terminal according to a second exemplary embodiment of the present invention.

[0083] like Figures 6 to 9As shown, in an exemplary embodiment of the present invention, a terminal is disclosed. The terminal is adapted to be inserted into a mounting hole (not shown) within an insulating housing (not shown). The terminal includes a terminal body 1 and an injection-molded seal 2. The terminal body 1 is an integrally stamped part and includes a cylindrical portion 10 having a splice gap 10f. The injection-molded seal 2 is injection-molded onto the cylindrical portion 10 for sealing the mounting hole of the insulating housing and the inner cavity of the cylindrical portion 10. An opening 101 is formed on the peripheral wall of the cylindrical portion 10 to allow injection molding material for forming the injection-molded seal 2 to enter, such that the injection molding material can enter the inner cavity of the cylindrical portion 10 through the opening 101 and seal the inner cavity of the cylindrical portion 10. The cylindrical portion 10 of the terminal body 1 has an injection-molded area that engages with the injection-molded seal 2, and the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10.

[0084] like Figures 6 to 9 As shown in the illustrated embodiment, at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 has an uneven, rough surface to enhance the bonding strength between the terminal body 1 and the injection molding seal 2.

[0085] like Figures 6 to 9 As shown, in the illustrated embodiment, at least a portion of the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is formed with engravings, indentations, grooves, protrusions, or roll patterns 10b. For example, in an exemplary embodiment of the present invention, at least a portion of the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 can be etched using plasma gas to increase the surface area of ​​at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0086] like Figures 6 to 9 As shown, in the illustrated embodiment, through holes and / or slots 10a for engaging with the injection-molded seal 2 are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 (see [reference]). Figure 1-5 This is to increase the bonding strength between terminal body 1 and injection-molded seal 2.

[0087] like Figures 6 to 9 As shown in the illustrated embodiment, a plurality of through holes and / or a plurality of arc-shaped slots 10a are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0088] like Figures 6 to 9 As shown in the illustrated embodiment, the opening 101 is arc-shaped and extends circumferentially along the cylindrical portion 10. A pair of openings 101 are formed on the cylindrical portion 10, and the pair of openings 101 are spaced apart from each other in the axial direction of the cylindrical portion 10.

[0089] like Figures 6 to 9As shown, in the illustrated embodiment, the cylindrical portion 10 has an arcuate bridge portion 102 located between a pair of openings 101, the arcuate bridge portion 102 being embedded in the injection-molded seal 2.

[0090] like Figures 6 to 9 As shown in the illustrated embodiment, the cylindrical portion 10 of the terminal body 1 has a front end and a rear end opposite each other in its axial direction. The front portion of the cylindrical portion 10 is used to mate with the inserted mating terminal, and the injection-molded seal 2 is formed on the rear portion of the cylindrical portion 10.

[0091] like Figures 6 to 9 As shown, in the illustrated embodiment, the terminal further includes a resilient contact 3. The resilient contact 3 is inserted into the inner cavity of the cylindrical portion 10 and makes electrical contact with the inner wall surface of the cylindrical portion 10. The resilient contact 3 is an integrally stamped part and is adapted to make electrical contact with the mating terminal inserted into the inner cavity of the cylindrical portion 10.

[0092] like Figures 6 to 9 As shown in the illustrated embodiment, the resilient contact 3 includes a pair of annular ends 31 and a plurality of resilient arms 32. The pair of annular ends 31 are in electrical contact with the inner wall surface of the cylindrical portion 10. The plurality of resilient arms 32 are connected between the pair of annular ends 31. The plurality of resilient arms 32 are spaced apart circumferentially on the annular ends 31 for electrical contact with the outer peripheral surface of the inserted mating terminal.

[0093] like Figures 6 to 9 As shown in the illustrated embodiment, the annular end 31 of the elastic contact 3 is C-shaped, and the elastic arm 32 is an inwardly arched arc, so that the elastic contact 3 can elastically deform in its radial and axial directions.

[0094] like Figures 6 to 9 As shown in the illustrated embodiment, a plurality of contact protrusions 3a are formed on the outer peripheral surface of the annular end 31. The plurality of contact protrusions 3a are distributed at intervals on the entire outer peripheral surface of the annular end 31 for electrical contact with the inner wall surface of the cylindrical portion 10.

[0095] like Figures 6 to 9 As shown in the illustrated embodiment, a front positioning protrusion 10c and a rear positioning protrusion 10d are formed on the inner wall surface of the cylindrical portion 10. The front positioning protrusion 10c and the rear positioning protrusion 10d are adapted to abut against a pair of annular ends 31 of the elastic contact member 3 to axially position the elastic contact member 3.

[0096] like Figures 6 to 9 As shown in the illustrated embodiment, a locking spring 12 is formed on the peripheral wall of the cylindrical portion 10 of the terminal body 1. The locking spring 12 is used to lock the terminal in the mounting hole of the insulating shell.

[0097] like Figures 6 to 9As shown, in the illustrated embodiment, the terminal body 1 further has a connecting portion 14 connected to the rear end of the cylindrical portion 10 (see [reference]). Figure 6-13 The connecting part 14 is used for electrical connection to a cable (not shown).

[0098] like Figures 6 to 9 As shown, in the illustrated embodiment, the connecting portion 14 of the terminal body 1 is adapted to be crimped onto one end of the cable for electrical connection with the cable.

[0099] like Figures 6 to 9 As shown in the illustrated embodiment, the injection-molded seal 2 is made of self-adhesive silicone to increase the bonding force between the injection-molded seal 2 and the cylindrical portion 10 of the terminal body 1.

[0100] like Figures 6 to 9 As shown, in the illustrated embodiment, a layer of sealant is applied to the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0101] like Figures 6 to 9 As shown in the illustrated embodiment, a hydrophilic coating is formed on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1, and a layer of sealant is applied to the hydrophilic coating.

[0102] like Figures 6 to 9 As shown, in the illustrated embodiment, the hydrophilic plating layer is a tin plating layer or a silver plating layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0103] like Figures 6 to 9 As shown in the illustrated embodiment, the hydrophilic plating layer is a matte tin layer or a bright tin layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0104] like Figures 6 to 9 As shown in the illustrated embodiment, the injection-molded seal 2 includes a main body 20 and a pair of reinforcing protrusions 21. The main body 20 is cylindrical and engages with the peripheral wall of the cylindrical portion 10 of the terminal body 1. The pair of reinforcing protrusions 21 are respectively formed on the front and rear faces of the main body 20. The reinforcing protrusions 21 are annular or arc-shaped and engage with the peripheral wall of the cylindrical portion 10 of the terminal body 1 to increase the bonding strength between the injection-molded seal 2 and the terminal body 1.

[0105] like Figures 6 to 9 As shown in the illustrated embodiment, the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is embedded in the main body portion 20 and a pair of reinforcing protrusions 21 of the injection molding seal 2. The reinforcing protrusions 21 have a predetermined width in the axial direction of the cylindrical portion 10 and a predetermined length in the circumferential direction of the cylindrical portion 10.

[0106] like Figures 6 to 9As shown in the illustrated embodiment, the injection-molded seal 2 further includes a plurality of annular sealing ribs 22, which are formed on the outer peripheral surface of the main body 20 and spaced apart axially. The annular sealing ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating shell to achieve a seal between the injection-molded seal 2 and the inner wall surface of the mounting hole.

[0107] like Figures 6 to 9 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This electrical connection assembly includes the aforementioned terminal and a cable. The terminal has a connection portion 14 connected to the rear end of the cylindrical portion 10 of its terminal body 1. The cable is crimped or soldered to the connection portion 14 of the terminal.

[0108] like Figures 6 to 9 As shown, in another exemplary embodiment of the present invention, an electrical connection product is also disclosed. The electrical connection product includes: an insulating shell (not shown) and the aforementioned terminals or the aforementioned electrical connection assembly. A mounting hole is formed within the insulating shell. The terminals are inserted into the mounting hole of the insulating shell, and an injection-molded seal 2 seals the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

[0109] like Figures 6 to 9 As shown in the illustrated embodiment, the electrical connection product can be a connector, a charging dock, or a charging gun.

[0110] Figures 10 to 13 A third embodiment according to the present invention is shown. In this embodiment, Figure 10 A perspective view of a terminal according to a third exemplary embodiment of the present invention is shown; Figure 11 An axial cross-sectional view of a terminal according to a third exemplary embodiment of the present invention is shown; Figure 12 An exploded view of a terminal according to a third exemplary embodiment of the present invention is shown;

[0111] Figure 13 This shows an anatomical view of a terminal according to a third exemplary embodiment of the present invention.

[0112] like Figures 10 to 13As shown, in an exemplary embodiment of the present invention, a terminal is disclosed. The terminal is adapted to be inserted into a mounting hole (not shown) within an insulating housing (not shown). The terminal includes a terminal body 1 and an injection-molded seal 2. The terminal body 1 is an integrally stamped part and includes a cylindrical portion 10 having a splice gap 10f. The injection-molded seal 2 is injection-molded onto the cylindrical portion 10 for sealing the mounting hole of the insulating housing and the inner cavity of the cylindrical portion 10. An opening 101 is formed on the peripheral wall of the cylindrical portion 10 to allow injection molding material for forming the injection-molded seal 2 to enter, such that the injection molding material can enter the inner cavity of the cylindrical portion 10 through the opening 101 and seal the inner cavity of the cylindrical portion 10. The cylindrical portion 10 of the terminal body 1 has an injection-molded area that engages with the injection-molded seal 2, and the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splice gap 10f of the injection-molded area of ​​the cylindrical portion 10.

[0113] like Figures 10 to 13 As shown in the illustrated embodiment, at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 has an uneven, rough surface to enhance the bonding strength between the terminal body 1 and the injection molding seal 2.

[0114] like Figures 10 to 13 As shown, in the illustrated embodiment, at least a portion of the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is formed with engravings, indentations, grooves, protrusions, or roll patterns 10b. For example, in an exemplary embodiment of the present invention, at least a portion of the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 can be etched using plasma gas to increase the surface area of ​​at least a portion of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0115] like Figures 10 to 13 As shown, in the illustrated embodiment, through holes and / or slots 10a for engaging with the injection-molded seal 2 are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 (see [reference]). Figure 1-5 This is to increase the bonding strength between terminal body 1 and injection-molded seal 2.

[0116] like Figures 10 to 13 As shown in the illustrated embodiment, a plurality of through holes and / or a plurality of arc-shaped slots 10a are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0117] like Figures 10 to 13 As shown in the illustrated embodiment, the opening 101 is arc-shaped and extends circumferentially along the cylindrical portion 10. A pair of openings 101 are formed on the cylindrical portion 10, and the pair of openings 101 are spaced apart from each other in the axial direction of the cylindrical portion 10.

[0118] like Figures 10 to 13As shown, in the illustrated embodiment, the cylindrical portion 10 has an arcuate bridge portion 102 located between a pair of openings 101, the arcuate bridge portion 102 being embedded in the injection-molded seal 2.

[0119] like Figures 10 to 13 As shown in the illustrated embodiment, the cylindrical portion 10 of the terminal body 1 has a front end and a rear end opposite each other in its axial direction. The front portion of the cylindrical portion 10 is used to mate with the inserted mating terminal, and the injection-molded seal 2 is formed on the rear portion of the cylindrical portion 10.

[0120] like Figures 10 to 13 As shown, in the illustrated embodiment, the terminal further includes a resilient contact 3. The resilient contact 3 is inserted into the inner cavity of the cylindrical portion 10 and makes electrical contact with the inner wall surface of the cylindrical portion 10. The resilient contact 3 is an integrally stamped part and is adapted to make electrical contact with the mating terminal inserted into the inner cavity of the cylindrical portion 10.

[0121] like Figures 10 to 13 As shown in the illustrated embodiment, the resilient contact 3 includes a pair of annular ends 31 and a plurality of resilient arms 32. The pair of annular ends 31 are in electrical contact with the inner wall surface of the cylindrical portion 10. The plurality of resilient arms 32 are connected between the pair of annular ends 31. The plurality of resilient arms 32 are spaced apart circumferentially on the annular ends 31 for electrical contact with the outer peripheral surface of the inserted mating terminal.

[0122] like Figures 10 to 13 As shown in the illustrated embodiment, the annular end 31 of the elastic contact 3 is C-shaped, and the elastic arm 32 is an inwardly arched arc, so that the elastic contact 3 can elastically deform in its radial and axial directions.

[0123] like Figures 10 to 13 As shown in the illustrated embodiment, a plurality of contact protrusions 3a are formed on the outer peripheral surface of the annular end 31. The plurality of contact protrusions 3a are distributed at intervals on the entire outer peripheral surface of the annular end 31 for electrical contact with the inner wall surface of the cylindrical portion 10.

[0124] like Figures 10 to 13 As shown in the illustrated embodiment, a front positioning protrusion 10c and a rear positioning protrusion 10d are formed on the inner wall surface of the cylindrical portion 10. The front positioning protrusion 10c and the rear positioning protrusion 10d are adapted to abut against a pair of annular ends 31 of the elastic contact member 3 to axially position the elastic contact member 3.

[0125] like Figures 10 to 13 As shown in the illustrated embodiment, a locking spring 12 is formed on the peripheral wall of the cylindrical portion 10 of the terminal body 1. The locking spring 12 is used to lock the terminal in the mounting hole of the insulating shell.

[0126] like Figures 10 to 13As shown, in the illustrated embodiment, the terminal body 1 further has a connecting portion 14 connected to the rear end of the cylindrical portion 10 (see [reference]). Figure 6-13 The connecting part 14 is used for electrical connection to a cable (not shown).

[0127] like Figures 10 to 13 As shown, in the illustrated embodiment, the connecting portion 14 of the terminal body 1 is flat and adapted to be soldered to one end of the cable for electrical connection with the cable.

[0128] like Figures 10 to 13 As shown in the illustrated embodiment, a hydrophilic coating is formed on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1, and a layer of sealant is applied to the hydrophilic coating.

[0129] like Figures 10 to 13 As shown in the illustrated embodiment, the injection-molded seal 2 is made of self-adhesive silicone to increase the bonding force between the injection-molded seal 2 and the cylindrical portion 10 of the terminal body 1.

[0130] like Figures 10 to 13 As shown, in the illustrated embodiment, a layer of sealant is applied to the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0131] like Figures 10 to 13 As shown, in the illustrated embodiment, the hydrophilic plating layer is a tin plating layer or a silver plating layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0132] like Figures 10 to 13 As shown in the illustrated embodiment, the hydrophilic plating layer is a matte tin layer or a bright tin layer electroplated on the surface of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1.

[0133] like Figures 10 to 13 As shown in the illustrated embodiment, the injection-molded seal 2 includes a main body 20 and a pair of reinforcing protrusions 21. The main body 20 is cylindrical and engages with the peripheral wall of the cylindrical portion 10 of the terminal body 1. The pair of reinforcing protrusions 21 are respectively formed on the front and rear faces of the main body 20. The reinforcing protrusions 21 are annular or arc-shaped and engage with the peripheral wall of the cylindrical portion 10 of the terminal body 1 to increase the bonding strength between the injection-molded seal 2 and the terminal body 1.

[0134] like Figures 10 to 13 As shown in the illustrated embodiment, the peripheral wall of the injection molding area of ​​the cylindrical portion 10 of the terminal body 1 is embedded in the main body portion 20 and a pair of reinforcing protrusions 21 of the injection molding seal 2. The reinforcing protrusions 21 have a predetermined width in the axial direction of the cylindrical portion 10 and a predetermined length in the circumferential direction of the cylindrical portion 10.

[0135] like Figures 10 to 13As shown in the illustrated embodiment, the injection-molded seal 2 further includes a plurality of annular sealing ribs 22, which are formed on the outer peripheral surface of the main body 20 and spaced apart axially. The annular sealing ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating shell to achieve a seal between the injection-molded seal 2 and the inner wall surface of the mounting hole.

[0136] like Figures 10 to 13 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This electrical connection assembly includes the aforementioned terminal and a cable. The terminal has a connection portion 14 connected to the rear end of the cylindrical portion 10 of its terminal body 1. The cable is crimped or soldered to the connection portion 14 of the terminal.

[0137] like Figures 10 to 13 As shown, in another exemplary embodiment of the present invention, an electrical connection product is also disclosed. The electrical connection product includes: an insulating shell (not shown) and the aforementioned terminals or the aforementioned electrical connection assembly. A mounting hole is formed within the insulating shell. The terminals are inserted into the mounting hole of the insulating shell, and an injection-molded seal 2 seals the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

[0138] like Figures 10 to 13 As shown in the illustrated embodiment, the electrical connection product can be a connector, a charging dock, or a charging gun.

[0139] 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 invention.

[0140] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0141] While some embodiments of the general concept of the invention 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 the invention, the scope of which is defined by the claims and their equivalents.

[0142] 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 the invention.

Claims

1. A terminal suitable for insertion into a mounting hole within an insulating housing, characterized in that, The terminals include: Terminal body (1), which is a one-piece stamped part and includes a cylindrical portion (10) with a splicing gap (10f); and Injection-molded seal (2), injection-molded onto the cylindrical portion (10), for sealing the mounting hole and the inner cavity of the cylindrical portion (10), An opening (101) is formed on the peripheral wall of the cylindrical portion (10) to allow the injection molding material used to form the injection-molded seal (2) to enter, so that the injection molding material can enter the inner cavity of the cylindrical portion (10) through the opening (101) and seal the inner cavity of the cylindrical portion (10). The cylindrical portion (10) has an injection area that is combined with the injection seal (2). The joint gap (10f) of the injection area of ​​the cylindrical portion (10) is filled with sealant to seal the joint gap (10f) of the injection area of ​​the cylindrical portion (10).

2. The terminal according to claim 1, characterized in that: At least a portion of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1) has an uneven, rough surface to enhance the bonding strength between the terminal body (1) and the injection molding seal (2).

3. The terminal according to claim 2, characterized in that: At least a portion of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1) is formed with grooves, indentations, recesses, protrusions or roll patterns (10b).

4. The terminal according to claim 2, characterized in that: At least a portion of the surface of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1) is etched using plasma gas to increase the roughness of the at least a portion of the surface.

5. The terminal according to claim 1, characterized in that: Through holes and / or slots (10a) for engaging with the injection seal (2) are formed on the peripheral wall of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1) to increase the bonding strength between the terminal body (1) and the injection seal (2).

6. The terminal according to claim 5, characterized in that: Multiple through holes and / or multiple arc-shaped slots (10a) are formed on the peripheral wall of the injection molding area of ​​the cylindrical part (10) of the terminal body (1).

7. The terminal according to claim 1, characterized in that: The opening (101) is arc-shaped and extends circumferentially along the cylindrical portion (10). A pair of openings (101) are formed on the cylindrical portion (10), and the pair of openings (101) are spaced apart from each other in the axial direction of the cylindrical portion (10).

8. The terminal according to claim 7, characterized in that: The cylindrical portion (10) has an arcuate bridge portion (102) located between the pair of openings (101), the arcuate bridge portion (102) being embedded in the injection-molded seal (2).

9. The terminal according to claim 1, characterized in that: The cylindrical portion (10) of the terminal body (1) has a front end and a rear end opposite each other in its axial direction. The front portion of the cylindrical portion (10) is used to mate with the inserted mating terminal, and the injection-molded seal (2) is formed on the rear portion of the cylindrical portion (10).

10. The terminal according to claim 9, characterized in that: A plurality of contact spring arms (11) are formed on the peripheral wall of the cylindrical portion (10), and the plurality of contact spring arms (11) extend obliquely into the inner cavity of the cylindrical portion (10) to make electrical contact with the mating terminal inserted into the inner cavity of the cylindrical portion (10).

11. The terminal according to claim 9, characterized in that, Also includes: The elastic contact (3) is inserted into the inner cavity of the cylindrical part (10) and makes electrical contact with the inner wall surface of the cylindrical part (10). The elastic contact (3) is an integral stamped part and is adapted to make electrical contact with the mating terminal inserted into the inner cavity of the cylindrical part (10).

12. The terminal according to claim 11, characterized in that: The elastic contact (3) includes: A pair of annular ends (31) are in electrical contact with the inner wall surface of the cylindrical portion (10); and Multiple elastic arms (32) are connected between the pair of annular ends (31), the multiple elastic arms (32) being spaced apart in the circumferential direction of the annular ends (31) for electrical contact with the outer peripheral surface of the inserted mating terminal.

13. The terminal according to claim 12, characterized in that: The annular end (31) of the elastic contact (3) is C-shaped, and the elastic arm (32) is an inwardly arched arc, so that the elastic contact (3) can elastically deform in its radial and axial directions.

14. The terminal according to claim 13, characterized in that: A plurality of contact protrusions (3a) are formed on the outer peripheral surface of the annular end (31), and the plurality of contact protrusions (3a) are distributed at intervals on the entire outer peripheral surface of the annular end (31) for electrical contact with the inner wall surface of the cylindrical part (10).

15. The terminal according to claim 12, characterized in that: A front positioning protrusion (10c) and a rear positioning protrusion (10d) are formed on the inner wall surface of the cylindrical portion (10). The front positioning protrusion (10c) and the rear positioning protrusion (10d) are adapted to abut against a pair of annular ends (31) of the elastic contact member (3) respectively to axially position the elastic contact member (3).

16. The terminal according to claim 1, characterized in that: A locking spring (12) is formed on the peripheral wall of the cylindrical portion (10) of the terminal body (1), and the locking spring (12) is used to lock the terminal in the mounting hole of the insulating shell.

17. The terminal according to claim 1, characterized in that: The terminal body (1) also has a connecting portion (14) connected to the rear end of the cylindrical portion (10), the connecting portion (14) being used for electrical connection to a cable.

18. The terminal according to claim 17, characterized in that: The connecting portion (14) of the terminal body (1) is flat and adapted to be soldered to one end of the cable for electrical connection with the cable.

19. The terminal according to claim 17, characterized in that: The connecting portion (14) of the terminal body (1) is adapted to be crimped to one end of the cable for electrical connection with the cable.

20. The terminal according to claim 1, characterized in that: A guide key (13) protruding outward is formed on the front end of the cylindrical portion (10) of the terminal body (1). The guide key (13) is used to cooperate with the guide groove in the insulating shell to guide the terminal to be inserted into the mounting hole in the insulating shell in the correct orientation.

21. The terminal according to claim 1, characterized in that: The injection-molded seal (2) is made of self-adhesive silicone to increase the bonding force between the injection-molded seal (2) and the cylindrical part (10) of the terminal body (1).

22. The terminal according to any one of claims 1-21, characterized in that: A layer of sealant is applied to the surface of the injection area of ​​the cylindrical portion (10) of the terminal body (1).

23. The terminal according to claim 22, characterized in that: A hydrophilic coating is formed on the surface of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1), and a layer of sealant is applied to the hydrophilic coating.

24. The terminal according to claim 23, characterized in that: The hydrophilic plating layer is a tin plating layer or a silver plating layer electroplated on the surface of the injection molding area of ​​the cylindrical part (10) of the terminal body (1).

25. The terminal according to claim 23, characterized in that: The hydrophilic plating layer is a matte tin layer or a bright tin layer electroplated on the surface of the injection molding area of ​​the cylindrical part (10) of the terminal body (1).

26. The terminal according to any one of claims 1-25, characterized in that: The injection-molded seal (2) includes: The main body (20) is cylindrical and is joined to the peripheral wall of the cylindrical portion (10) of the terminal body (1); and A pair of reinforcing protrusions (21) are respectively formed on the front and rear faces of the main body (20). The reinforcing protrusion (21) is annular or arc-shaped and is combined with the peripheral wall of the cylindrical portion (10) of the terminal body (1) to increase the bonding strength between the injection-molded seal (2) and the terminal body (1).

27. The terminal according to claim 26, characterized in that: The peripheral wall of the injection area of ​​the cylindrical portion (10) of the terminal body (1) is embedded in the main body portion (20) of the injection seal (2) and the pair of reinforcing protrusions (21); The reinforcing protrusion (21) has a predetermined width in the axial direction of the cylindrical portion (10) and a predetermined length in the circumferential direction of the cylindrical portion (10).

28. The terminal according to claim 26, characterized in that: The injection-molded seal (2) also includes: Multiple annular sealing ribs (22) are formed on the outer peripheral surface of the main body (20) and are spaced apart in the axial direction. The annular sealing rib (22) is used to make an interference fit with the inner wall surface of the mounting hole of the insulating shell to achieve a seal between the injection-molded seal (2) and the inner wall surface of the mounting hole.

29. An electrical connection assembly, characterized in that, include: The terminal according to any one of claims 1-28 has a connecting portion (14) connected to the rear end of the cylindrical portion (10) of its terminal body (1); and The cable is crimped or soldered to the connection portion (14) of the terminal.

30. An electrical connection product, characterized in that, include: The insulating shell has mounting holes. and The terminal of any one of claims 1-28 or the electrical connection assembly of claim 29, The terminal is inserted into the mounting hole of the insulating shell, and the injection-molded seal (2) seals the mounting hole of the insulating shell to prevent moisture and dust from entering the insulating shell through the mounting hole.

31. The electrical connection product according to claim 30, characterized in that: The electrical connection product is a connector, charging socket, or charging gun.

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