Terminal, electric connection assembly and electric connection product

Abstract

The utility model 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 utility model 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 Art

[0002] In the prior art, in order to charge the battery of a new energy vehicle, a charging socket adapted to be mated with a charging gun is usually installed on the new energy vehicle. Usually, a female charging terminal is arranged in the insulating shell of the charging socket, and a male charging terminal adapted to be mated with the female charging terminal in the charging socket is arranged in the charging gun. The female charging terminal generally includes a cylindrical terminal body, a cage-shaped elastic contact inserted into the inner cavity of the terminal body, a welding tail connected to the rear end of the terminal body, and an injection molding seal formed on the terminal body. The seal is used to seal the terminal installation hole in the insulating shell of the charging socket to prevent water vapor and dust from entering the interior of the charging socket through the terminal installation hole. In the prior art, the injection molding seal is usually directly combined with the surface of the terminal body. Since the injection molding seal and the terminal body are made of different materials and have different thermal expansion coefficients, gaps are likely to occur between the two under the influence of thermal expansion and contraction, reducing the waterproof sealing performance. Summary of the Utility Model

[0003] The purpose of the utility model aims to solve at least one of the above problems and defects existing in the prior art.

[0004] According to one aspect of the utility model, a terminal is provided. The terminal is adapted to be inserted into an installation hole in an insulating shell. The terminal includes: a terminal body, which is an integrally stamped part and includes a cylindrical part having a splicing gap; and an injection molding seal, which is injection molded on the cylindrical part for sealing the installation hole and the inner cavity of the cylindrical part. An opening allowing the injection molding material for forming the injection molding seal to enter is formed on the peripheral wall of the cylindrical part, so that the injection molding material can enter the inner cavity of the cylindrical part through the opening and seal the inner cavity of the cylindrical part. The cylindrical part of the terminal body has an injection molding area combined with the injection molding seal, and sealant is filled in the splicing gap of the injection molding area of the cylindrical part of the terminal body to seal the splicing gap of the injection molding area of the cylindrical part.

[0005] According to an exemplary embodiment of the utility model, at least a part of the surface of the injection molding area of the cylindrical part of the terminal body is a rough surface with uneven convex and concave to enhance the bonding strength between the terminal body and the injection molding seal.

[0006] According to another exemplary embodiment of the utility model, scratches, indentations, grooves, protrusions or rolling patterns are formed on at least a part of the surface of the injection molding area of the cylindrical part of the terminal body.

[0007] According to another exemplary embodiment of the present utility model, a plasma gas is used to corrode at least a part of the surface of the injection area of the cylindrical portion of the terminal body, so as to increase the roughness of the at least a part of the surface.

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

[0009] According to another exemplary embodiment of the present utility model, a plurality of through holes and / or a plurality of arc-shaped slot holes distributed in an array are formed on the peripheral wall of the injection area of the cylindrical portion of the terminal body.

[0010] According to another exemplary embodiment of the present utility model, the opening is arc-shaped and extends along the circumferential direction of the cylindrical portion, and a pair of openings are formed on the cylindrical portion, and the pair of openings are spaced opposite to each other in the axial direction of the cylindrical portion.

[0011] According to another exemplary embodiment of the present utility model, the cylindrical portion has an arc-shaped bridge portion located between the pair of openings, and the arc-shaped bridge portion is embedded in the injection seal.

[0012] According to another exemplary embodiment of the present utility model, the cylindrical portion of the terminal body has a front end and a rear end opposite to each other in its axial direction. The front portion of the cylindrical portion is used for mating with the inserted mating terminal, and the injection seal is formed on the rear portion of the cylindrical portion.

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

[0014] According to another exemplary embodiment of the present utility model, the terminal further includes: an elastic contact member, which is inserted into the inner cavity of the cylindrical portion and is in electrical contact with the inner wall surface of the cylindrical portion. The elastic contact member is an integrally stamped part and is adapted to be in electrical contact with the mating terminal inserted into the inner cavity of the cylindrical portion.

[0015] According to another exemplary embodiment of the present utility model, the elastic contact member includes: a pair of annular ends, which are in electrical contact with the inner wall surface of the cylindrical portion; and a plurality of elastic arm portions, which are connected between the pair of annular ends. The plurality of elastic arm portions are spaced apart in the circumferential direction of the annular ends and are used to be in electrical contact with the outer peripheral surface of the inserted mating terminal.

[0016] According to another exemplary embodiment of the present utility model, the annular end portion of the elastic contact member is in a [shape], and the elastic arm portion is in an arc shape arched inward, so that the elastic contact member can elastically deform in its radial and axial directions.

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

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

[0019] According to another exemplary embodiment of the present utility model, a locking elastic piece is formed on the peripheral wall of the cylindrical portion of the terminal body, and the locking elastic piece is used to lock the terminal in the mounting hole of the insulating housing.

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

[0021] According to another exemplary embodiment of the present utility model, the connecting portion of the terminal body is in a flat shape and is adapted to be welded to one end of the cable for electrical connection with the cable.

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

[0023] According to another exemplary embodiment of the present utility model, a guiding key protruding outward is formed on the front end of the cylindrical portion of the terminal body, and the guiding key is used to cooperate with a guiding groove in the insulating housing to guide the terminal to be inserted into the mounting hole in the insulating housing in the correct orientation.

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

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

[0026] According to another exemplary embodiment of the present utility model, 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 on the hydrophilic coating.

[0027] According to another exemplary embodiment of the present utility model, the hydrophilic coating is a tin coating or a silver coating 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 utility model, the hydrophilic coating 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 utility model, the injection molding seal includes: a main body portion, which is cylindrical and is combined 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, and the reinforcing protrusions are annular or arc-shaped and are combined with the peripheral wall of the cylindrical portion of the terminal body to increase the bonding strength between the injection molding seal and the terminal body.

[0030] According to another exemplary embodiment of the present utility model, the peripheral wall of the injection molding area of the cylindrical portion of the terminal body is embedded into the main body portion 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 utility model, the injection molding seal further includes: a plurality of annular sealing ribs, which are formed on the outer peripheral surface of the main body portion and are spaced apart in the axial direction, and the annular sealing ribs are used for interference fit with the inner wall surface of the mounting hole of the insulating housing to achieve sealing between the injection molding seal and the inner wall surface of the mounting hole.

[0032] According to another aspect of the present utility model, there is provided an electrical connection assembly. The electrical connection assembly includes: the aforementioned terminal, having a connection portion connected to the rear end of the cylindrical portion of the terminal body; and a cable, which is crimped or welded to the connection portion of the terminal.

[0033] According to another aspect of the present utility model, there is provided an electrical connection product. The electrical connection product includes: an insulating housing, which is formed with a mounting hole; and the aforementioned terminal or the aforementioned electrical connection assembly, the terminal is inserted into the mounting hole of the insulating housing, and the injection molding seal seals the mounting hole of the insulating housing to prevent moisture and dust from entering the insulating housing through the mounting hole.

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

[0035] In each of the foregoing exemplary embodiments according to the present utility model, by filling the splicing gap in the injection molding area of the cylindrical portion of the terminal body with a sealant, the splicing gap in the injection molding area of the cylindrical portion is sealed, thereby improving the waterproof and sealing performance.

[0036] In some of the foregoing exemplary embodiments according to the present utility model, a layer of sealant is applied on the surface of the injection molding area of the cylindrical portion of the terminal body, so that the injection molding seal can be firmly bonded to the terminal body, preventing any gap from occurring between the two, and further improving the waterproof and sealing performance.

[0037] Other objects and advantages of the present utility model will become apparent and can help to provide a comprehensive understanding of the present utility model through the description of the present utility model with reference to the accompanying drawings below. Description of the Drawings

[0038] Figure 1 A perspective schematic view of a terminal showing the first exemplary embodiment according to the present utility model;

[0039] Figure 2 An axial sectional view of a terminal showing the first exemplary embodiment according to the present utility model;

[0040] Figure 3 An exploded sectional view of a terminal showing the first exemplary embodiment according to the present utility model;

[0041] Figure 4 An exploded schematic view of a terminal showing the first exemplary embodiment according to the present utility model when viewed from the upper side;

[0042] Figure 5 An exploded schematic view of a terminal showing the first exemplary embodiment according to the present utility model when viewed from the lower side;

[0043] Figure 6 A perspective schematic view of a terminal showing the second exemplary embodiment according to the present utility model;

[0044] Figure 7 An axial sectional view of a terminal showing the second exemplary embodiment according to the present utility model;

[0045] Figure 8 An exploded schematic view of a terminal showing the second exemplary embodiment according to the present utility model;

[0046] Figure 9 An exploded sectional view of a terminal showing the second exemplary embodiment according to the present utility model;

[0047] Figure 10Schematic perspective view of a terminal according to a third exemplary embodiment of the present utility model;

[0048] Figure 11 Axial sectional view of a terminal according to a third exemplary embodiment of the present utility model;

[0049] Figure 12 Exploded schematic view of a terminal according to a third exemplary embodiment of the present utility model;

[0050] Figure 13 Exploded sectional view of a terminal according to a third exemplary embodiment of the present utility model. Detailed implementation manners

[0051] The technical solutions of the present utility model will be further specifically described below through embodiments in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of the present utility model and should not be construed as a limitation to the present utility model.

[0052] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments disclosed herein. However, it is obvious that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in a schematic manner to simplify the drawings.

[0053] According to an overall inventive concept of the present utility model, a terminal is provided. The terminal is adapted to be inserted into an installation hole in an insulating housing. The terminal includes: a terminal body, which is an integrally stamped part and includes a cylindrical part having a splicing gap; and an injection molding sealant, which is injection molded on the cylindrical part for sealing the installation hole and the inner cavity of the cylindrical part. An opening is formed on the peripheral wall of the cylindrical part to allow the injection molding material for forming the injection molding sealant to enter, so that the injection molding material can enter the inner cavity of the cylindrical part through the opening and seal the inner cavity of the cylindrical part. The cylindrical part of the terminal body has an injection molding area combined with the injection molding sealant, and a sealant is filled in the splicing gap of the injection molding area of the cylindrical part of the terminal body to seal the splicing gap of the injection molding area of the cylindrical part.

[0054] According to another overall inventive concept of the present utility model, an electrical connection assembly is provided. The electrical connection assembly includes: the aforementioned terminal, having a connection part connected to the rear end of the cylindrical part of its terminal body; and a cable, which is crimped or welded to the connection part of the terminal.

[0055] According to another general technical concept of the present utility model, an electrical connection product is provided. The electrical connection product includes: an insulating housing formed with a mounting hole; and the aforementioned terminal or the aforementioned electrical connection assembly. The terminal is inserted into the mounting hole of the insulating housing, and the injection sealing member seals the mounting hole of the insulating housing to prevent moisture and dust from entering the insulating housing through the mounting hole.

[0056] Figures 1 to 5 shows a first embodiment according to the present utility model. Among them, Figure 1 A three-dimensional schematic diagram of the terminal showing the first exemplary embodiment according to the present utility model; Figure 2 An axial sectional view of the terminal showing the first exemplary embodiment according to the present utility model; Figure 3 An exploded sectional view of the terminal showing the first exemplary embodiment according to the present utility model; Figure 4 An exploded schematic diagram of the terminal showing the first exemplary embodiment according to the present utility model when viewed from the upper side; Figure 5 An exploded schematic diagram of the terminal showing the first exemplary embodiment according to the present utility model when viewed from the lower side.

[0057] As Figures 1 to 5 shown, in an exemplary embodiment of the present utility model, a terminal is disclosed. The terminal is adapted to be inserted into a mounting hole (not shown) in an insulating housing (not shown). The terminal includes: a terminal body 1 and an injection sealing member 2. The terminal body 1 is a one-piece stamping formed part and includes a cylindrical portion 10 having a splicing gap 10f. The injection sealing member 2 is injection molded on 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 the injection molding material for forming the injection sealing member 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 of the terminal body 1 has an injection molding area combined with the injection sealing member 2, and the splicing gap 10f in the injection molding area of the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splicing gap 10f in the injection molding area of the cylindrical portion 10.

[0058] As Figures 1 to 5 shown, in the illustrated embodiment, at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1 is a rough surface with uneven convex and concave to enhance the bonding strength between the terminal body 1 and the injection sealing member 2.

[0059] As Figures 1 to 5 shown, in the illustrated embodiment, on at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1, there are formed scratches, indentations, grooves, protrusions or rolling patterns 10b (see Figures 6 - 13)。For example, in an exemplary embodiment of the present utility model, a plasma gas can be used to etch at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1 (i.e., etching treatment) to increase at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1.

[0060] As Figures 1 to 5 shown, in the illustrated embodiment, through holes and / or slot holes 10a for engaging with the injection molding 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 molding seal 2.

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

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

[0063] As Figures 1 to 5 shown, in the illustrated embodiment, the cylindrical portion 10 has an arc-shaped bridge portion 102 located between a pair of openings 101, and the arc-shaped bridge portion 102 is embedded in the injection molding seal 2.

[0064] As Figures 1 to 5 shown, in the illustrated embodiment, the cylindrical portion 10 of the terminal body 1 has a front end and a rear end opposite to 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 molding seal 2 is formed on the rear portion of the cylindrical portion 10.

[0065] As Figures 1 to 5 shown, in the illustrated embodiment, 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 obliquely extend 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.

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

[0067] As Figures 1 to 5 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 Figures 6 - 13 ), and the connecting portion 14 is used for electrical connection to a cable (not shown).

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

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

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

[0071] As Figures 1 to 5 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] As Figures 1 to 5 shown, in the illustrated embodiment, a layer of sealant is applied to the surface of the injection area of the cylindrical portion 10 of the terminal body 1.

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

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

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

[0076] As Figures 1 to 5 shown, in the illustrated embodiment, the injection-molded seal 2 includes: a main body portion 20 and a pair of reinforcing protrusions 21. The main body portion 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 end face and the rear end face of the main body portion 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] As Figures 1 to 5As 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] As Figures 1 to 5 shown, in the illustrated embodiment, the injection molding seal 2 further includes a plurality of annular seal ribs 22 which are formed on the outer peripheral surface of the main body portion 20 and are spaced apart in the axial direction. The annular seal ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating housing to achieve sealing between the injection molding seal 2 and the inner wall surface of the mounting hole.

[0079] As Figures 1 to 5 shown, in another exemplary embodiment of the present utility model, an electrical connection assembly is also disclosed. The 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 welded to the connection portion 14 of the terminal.

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

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

[0082] Figures 6 to 9 shows the second embodiment according to the present utility model. Among them, Figure 6 shows a three-dimensional schematic view of the terminal according to the second exemplary embodiment of the present utility model; Figure 7 shows an axial sectional view of the terminal according to the second exemplary embodiment of the present utility model; Figure 8 shows an exploded schematic view of the terminal according to the second exemplary embodiment of the present utility model; Figure 9 shows an exploded sectional view of the terminal according to the second exemplary embodiment of the present utility model.

[0083] As Figures 6 to 9As shown, in an exemplary embodiment of the present utility model, a terminal is disclosed. The terminal is adapted to be inserted into a mounting hole (not shown) in an insulating housing (not shown). The terminal includes: a terminal body 1 and an injection-molded seal 2. The terminal body 1 is a one-piece stamping formed part and includes a cylindrical portion 10 having a splicing gap 10f. The injection-molded seal 2 is injection-molded on 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 the injection material for forming the injection-molded seal 2 to enter, so that the injection 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 area combined with the injection-molded seal 2, and the splicing gap 10f in the injection area of the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splicing gap 10f in the injection area of the cylindrical portion 10.

[0084] As Figures 6 to 9 shown, in the illustrated embodiment, at least a part of the surface of the injection area of the cylindrical portion 10 of the terminal body 1 is a rough surface with unevenness to enhance the bonding strength between the terminal body 1 and the injection-molded seal 2.

[0085] As Figures 6 to 9 shown, in the illustrated embodiment, notches, indentations, grooves, protrusions or rolling patterns 10b are formed on at least a part of the surface of the injection area of the cylindrical portion 10 of the terminal body 1. For example, in an exemplary embodiment of the present utility model, at least a part of the surface of the injection area of the cylindrical portion 10 of the terminal body 1 can be etched (i.e., etched) using a plasma gas to increase at least a part of the surface of the injection area of the cylindrical portion 10 of the terminal body 1.

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

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

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

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

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

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

[0092] As Figures 6 to 9 shown, in the illustrated embodiment, the elastic contact member 3 includes: a pair of annular end portions 31 and a plurality of elastic arm portions 32. The pair of annular end portions 31 are in electrical contact with the inner wall surface of the cylindrical portion 10. The plurality of elastic arm portions 32 are connected between the pair of annular end portions 31. The plurality of elastic arm portions 32 are spaced apart in the circumferential direction of the annular end portions 31 and are for making electrical contact with the outer peripheral surface of the inserted mating terminal.

[0093] As Figures 6 to 9 shown, in the illustrated embodiment, the annular end portion 31 of the elastic contact member 3 is C-shaped, and the elastic arm portion 32 is an arc-shaped that arches inward, so that the elastic contact member 3 can be elastically deformed in its radial and axial directions.

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

[0095] As Figures 6 to 9 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 respectively abut against a pair of annular end portions 31 of the elastic contact member 3 to axially position the elastic contact member 3.

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

[0097] As 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 Figures 6 - 13 ), and the connecting portion 14 is used for electrical connection to a cable (not shown).

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

[0099] As Figures 6 to 9 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] As Figures 6 to 9 shown, in the illustrated embodiment, a layer of sealant is applied to the surface of the injection area of the cylindrical portion 10 of the terminal body 1.

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

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

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

[0104] As Figures 6 to 9 shown, in the illustrated embodiment, the injection-molded seal 2 includes: a main body portion 20 and a pair of reinforcing protrusions 21. The main body portion 20 is cylindrical and engages with the peripheral wall of the cylindrical portion 10 of the terminal body 1. A pair of reinforcing protrusions 21 are respectively formed on the front end face and the rear end face of the main body portion 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] As Figures 6 to 9 shown, in the illustrated embodiment, 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 and the pair of reinforcing protrusions 21 of the injection-molded 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] As Figures 6 to 9As shown, in the illustrated embodiment, the injection-molded seal 2 further includes a plurality of annular seal ribs 22 formed on the outer peripheral surface of the main body portion 20 and spaced apart axially. The annular seal ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating housing to achieve sealing between the injection-molded seal 2 and the inner wall surface of the mounting hole.

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

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

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

[0110] Figures 10 to 13 shows the third embodiment according to the present invention. Among them, Figure 10 shows a three-dimensional schematic view of the terminal according to the third exemplary embodiment of the present invention; Figure 11 shows an axial sectional view of the terminal according to the third exemplary embodiment of the present invention; Figure 12 shows an exploded schematic view of the terminal according to the third exemplary embodiment of the present invention; Figure 13 shows an exploded sectional view of the terminal according to the third exemplary embodiment of the present invention.

[0111] As Figures 10 to 13As shown, in an exemplary embodiment of the present utility model, a terminal is disclosed. The terminal is adapted to be inserted into an installation hole (not shown) in an insulating housing (not shown). The terminal includes: a terminal body 1 and an injection molding seal 2. The terminal body 1 is an integrally stamped part and includes a cylindrical portion 10 having a splicing gap 10f. The injection molding seal 2 is injection molded on the cylindrical portion 10 for sealing the installation 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 the injection molding material for forming the injection molding 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 of the terminal body 1 has an injection molding area combined with the injection molding seal 2, and the splicing gap 10f in the injection molding area of the cylindrical portion 10 of the terminal body 1 is filled with sealant to seal the splicing gap 10f in the injection molding area of the cylindrical portion 10.

[0112] As Figures 10 to 13 shown, in the illustrated embodiment, at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1 is a rough surface with unevenness to enhance the bonding strength between the terminal body 1 and the injection molding seal 2.

[0113] As Figures 10 to 13 shown, in the illustrated embodiment, notches, indentations, grooves, protrusions or rolling patterns 10b are formed on at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1. For example, in an exemplary embodiment of the present utility model, at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1 can be etched (i.e., etched) using a plasma gas to increase at least a part of the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1.

[0114] As Figures 10 to 13 shown, in the illustrated embodiment, through holes and / or slot holes 10a for engaging with the injection molding seal 2 are formed on the peripheral wall of the injection molding area of the cylindrical portion 10 of the terminal body 1 (see Figures 1 - 5 ), to enhance the bonding strength between the terminal body 1 and the injection molding seal 2.

[0115] As Figures 10 to 13 shown, in the illustrated embodiment, a plurality of through holes and / or a plurality of arc-shaped slot holes 10a distributed in an array are formed on the peripheral wall of the injection molding area of the cylindrical portion 10 of the terminal body 1.

[0116] As Figures 10 to 13 shown, in the illustrated embodiment, the opening 101 is arc-shaped and extends circumferentially along the cylindrical portion 10, and a pair of openings 101 are formed on the cylindrical portion 10, and the pair of openings 101 are spaced opposite to each other in the axial direction of the cylindrical portion 10.

[0117] As 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, and the arcuate bridge portion 102 is embedded in the injection-molded seal 2.

[0118] As Figures 10 to 13 shown, in the illustrated embodiment, the cylindrical portion 10 of the terminal body 1 has a front end and a rear end that are opposite to each other in its axial direction. The front portion of the cylindrical portion 10 is for mating with the inserted mating terminal, and the injection-molded seal 2 is formed on the rear portion of the cylindrical portion 10.

[0119] As Figures 10 to 13 shown, in the illustrated embodiment, the terminal further includes an elastic contact member 3. The elastic contact member 3 is inserted into the inner cavity of the cylindrical portion 10 and is in electrical contact with the inner wall surface of the cylindrical portion 10. The elastic contact member 3 is a one-piece stamping and is adapted to be in electrical contact with the mating terminal inserted into the inner cavity of the cylindrical portion 10.

[0120] As Figures 10 to 13 shown, in the illustrated embodiment, the elastic contact member 3 includes: a pair of annular end portions 31 and a plurality of elastic arm portions 32. The pair of annular end portions 31 are in electrical contact with the inner wall surface of the cylindrical portion 10. The plurality of elastic arm portions 32 are connected between the pair of annular end portions 31. The plurality of elastic arm portions 32 are spaced apart in the circumferential direction of the annular end portions 31 and are for making electrical contact with the outer peripheral surface of the inserted mating terminal.

[0121] As Figures 10 to 13 shown, in the illustrated embodiment, the annular end portion 31 of the elastic contact member 3 is C-shaped, and the elastic arm portion 32 is an arcuate shape that arches inward, so that the elastic contact member 3 can be elastically deformed in its radial and axial directions.

[0122] As Figures 10 to 13 shown, in the illustrated embodiment, a plurality of contact protrusions 3a are formed on the outer peripheral surface of the annular end portion 31. The plurality of contact protrusions 3a are spaced apart and distributed on the entire outer peripheral surface of the annular end portion 31 and are for making electrical contact with the inner wall surface of the cylindrical portion 10.

[0123] As Figures 10 to 13 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 respectively abut against a pair of annular end portions 31 of the elastic contact member 3 to axially position the elastic contact member 3.

[0124] As Figures 10 to 13 shown, in the illustrated embodiment, a locking spring piece 12 is formed on the peripheral wall of the cylindrical portion 10 of the terminal body 1. The locking spring piece 12 is for locking the terminal in the mounting hole of the insulating housing.

[0125] As 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 Figures 6 - 13 ), and the connecting portion 14 is used for electrical connection to a cable (not shown).

[0126] As Figures 10 to 13 shown, in the illustrated embodiment, the connecting portion 14 of the terminal body 1 is flat and adapted to be welded to one end of the cable for electrical connection to the cable.

[0127] As Figures 10 to 13 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 on the hydrophilic coating.

[0128] As Figures 10 to 13 shown, in the illustrated embodiment, the injection molding seal 2 is made of self - adhesive silicone to increase the bonding force between the injection molding seal 2 and the cylindrical portion 10 of the terminal body 1.

[0129] As Figures 10 to 13 shown, in the illustrated embodiment, a layer of sealant is applied on the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1.

[0130] As Figures 10 to 13 shown, in the illustrated embodiment, the hydrophilic coating is a tin coating or a silver coating electroplated on the surface of the injection molding area of the cylindrical portion 10 of the terminal body 1.

[0131] As Figures 10 to 13 shown, in the illustrated embodiment, the hydrophilic coating 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.

[0132] As Figures 10 to 13 shown, in the illustrated embodiment, the injection molding seal 2 includes: a main body portion 20 and a pair of reinforcing protrusions 21. The main body portion 20 is cylindrical and engages with the peripheral wall of the cylindrical portion 10 of the terminal body 1. A pair of reinforcing protrusions 21 are respectively formed on the front end face and the rear end face of the main body portion 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 molding seal 2 and the terminal body 1.

[0133] As Figures 10 to 13 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.

[0134] As Figures 10 to 13As shown, in the illustrated embodiment, the injection-molded seal 2 further includes a plurality of annular seal ribs 22, which are formed on the outer peripheral surface of the main body portion 20 and are spaced apart axially. The annular seal ribs 22 are used for interference fit with the inner wall surface of the mounting hole of the insulating housing to achieve sealing between the injection-molded seal 2 and the inner wall surface of the mounting hole.

[0135] As Figures 10 to 13 shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. The electrical connection assembly includes: the aforementioned terminal and the cable. The terminal has a connection portion 14 connected to the rear end of the cylindrical portion 10 of the terminal body 1. The cable is crimped or welded to the connection portion 14 of the terminal.

[0136] As Figures 10 to 13 shown, in another exemplary embodiment of the present invention, an electrical connection product is also disclosed. The electrical connection product includes: an insulating housing (not shown) and the aforementioned terminal or the aforementioned electrical connection assembly. A mounting hole is formed in the insulating housing. The terminal is inserted into the mounting hole of the insulating housing, and the injection-molded seal 2 seals the mounting hole of the insulating housing to prevent moisture and dust from entering the insulating housing through the mounting hole.

[0137] As Figures 10 to 13 shown, in the illustrated embodiment, the electrical connection product can be a connector, a charging base, or a charging gun.

[0138] Those skilled in the art can understand that the above-described embodiments are all exemplary, and those skilled in the art can make improvements to them. The structures described in various embodiments can be freely combined without conflict in terms of structure or principle, and these changes should reasonably fall within the protection scope of the present invention.

[0139] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present invention and should not be construed as a limitation to the present invention.

[0140] Although some embodiments of the general concept of the present invention have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0141] It should be noted that the term "comprising" does not exclude other elements or steps, and the terms "a" or "an" do not exclude a plurality. Additionally, any element label in the claims should not be construed as limiting the scope of the present invention.

Claims

1. A terminal, suitable for being inserted into a mounting hole in an insulating housing, characterized in that: The terminal comprises: A terminal body (1) which is an integral stamped part and includes a cylindrical portion (10) having a splicing gap (10f); and An injection-molded seal (2) is injection-molded on the cylindrical portion (10) and is used to seal 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 molding 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 molding area combined with the injection molding seal (2), and the splicing gap (10f) of the injection molding area of ​​the cylindrical portion (10) is filled with sealant to seal the splicing gap (10f) of the injection molding area of ​​the cylindrical portion (10).

2. The terminal according to claim 1, 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 a rough surface with uneven surfaces, so as 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: A notch, an indentation, a groove, a protrusion or a rolling pattern (10b) is formed on at least a portion of the surface of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1).

4. The terminal according to claim 2, characterized in that: Plasma gas is used to perform corrosion treatment on at least a portion of the surface of the injection molding area of ​​the cylindrical portion (10) of the terminal body (1) to increase the roughness of the at least a portion of the surface.

5. The terminal according to claim 1, characterized in that: A through hole and / or a slot (10a) for engaging with the injection molded seal (2) is formed on the peripheral wall of the injection molded area of ​​the cylindrical portion (10) of the terminal body (1) to increase the bonding strength between the terminal body (1) and the injection molded seal (2).

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

7. The terminal according to claim 1, characterized in that: The opening (101) is arc-shaped and extends along the circumferential direction of 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 and opposed to 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 arc-shaped bridge portion (102) located between the pair of openings (101), and the arc-shaped bridge portion (102) is 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 to each other in its axial direction, the front portion of the cylindrical portion (10) is used to mate with an 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 electrically contact with a 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 piece (3) is inserted into the inner cavity of the cylindrical portion (10) and is in electrical contact with the inner wall surface of the cylindrical portion (10). The elastic contact piece (3) is an integral stamped part and is suitable for electrically contacting a mating terminal inserted into the inner cavity of the cylindrical portion (10).

12. The terminal according to claim 11, characterized in that: The elastic contact member (3) comprises: A pair of annular end portions (31) in electrical contact with the inner wall surface of the cylindrical portion (10); and A plurality of elastic arm portions (32) are connected between the pair of annular end portions (31); the plurality of elastic arm portions (32) are spaced apart in the circumferential direction of the annular end portion (31) and are used for electrically contacting the outer circumferential surface of the inserted mating terminal.

13. The terminal according to claim 12, characterized in that: The annular end portion (31) of the elastic contact piece (3) is C-shaped, and the elastic arm portion (32) is in an arc shape that arches inwards, so that the elastic contact piece (3) can be elastically deformed 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 portion (31), and the plurality of contact protrusions (3a) are distributed at intervals on the entire outer peripheral surface of the annular end portion (31) for electrically contacting the inner wall surface of the cylindrical portion (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), and the front positioning protrusion (10c) and the rear positioning protrusion (10d) are suitable for respectively abutting against a pair of annular end portions (31) of the elastic contact piece (3) to axially position the elastic contact piece (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) further comprises a connecting portion (14) connected to the rear end of the cylindrical portion (10), and the connecting portion (14) is used for being electrically connected 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 suitable for being welded to one end of the cable to be electrically connected to the cable.

19. The terminal according to claim 17, characterized in that: The connecting portion (14) of the terminal body (1) is suitable for being crimped onto one end of the cable to be electrically connected to 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), and 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 installation 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 portion (10) of the terminal body (1).

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

26. The terminal according to any one of claims 1 to 25, characterized in that: The injection molded seal (2) comprises: A main body (20) is cylindrical and is combined with 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 end surface and the rear end surface 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 molding area of ​​the cylindrical portion (10) of the terminal body (1) is embedded in the main body (20) of the injection molding 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) further comprises: A plurality of 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 for interference fit with the inner wall surface of the mounting hole of the insulating shell, so as to achieve sealing between the injection-molded sealing component (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 to 28, comprising a connecting portion (14) connected to the rear end of the cylindrical portion (10) of the terminal body (1); and A cable is crimped or welded to the connecting portion (14) of the terminal.

30. An electrical connection product, characterized in that: include: An insulating shell formed with a mounting hole; and The terminal according to any one of claims 1 to 28 or the electrical connection assembly according to 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 water vapor 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, a charging stand or a charging gun.

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