Electrical connector

Abstract

The application relates to the technical field of connectors, and particularly discloses an electric connector, one end of the shell along a first direction is provided with a connecting groove, the groove bottom wall of the connecting groove is provided with a plurality of connecting holes arranged at intervals, the groove side wall of the connecting groove is provided with a plurality of clamping structures arranged at intervals, a plurality of terminals are respectively inserted into the plurality of connecting holes, a plurality of wires are respectively electrically connected with one end of the plurality of terminals in the connecting groove, one end of the clamping protective cover is inserted into the connecting groove, and the plurality of clamping matching structures are respectively clamped with the plurality of clamping structures, so that the shell and the clamping protective cover can be assembled in the clamping mode; the injection protective cover can also be directly injection molded at one end of the shell along the first direction, the injection protective cover is used to replace the clamping protective cover, the shell and the injection protective cover are assembled in the injection mode, the assembly requirements of different users are met, different molds for the electric connector need not to be opened or complicated reconstruction is carried out, and the cost is lower.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more particularly to electrical connectors. Background Technology

[0002] Electrical connectors establish a reliable electrical path between two or more circuits or devices, ensuring smooth transmission of current and signals. They are widely used in many fields such as electronic equipment, communication equipment, industrial automation, aerospace, and automotive electronics.

[0003] In related technologies, in order to meet the process requirements of different customers, it is usually necessary to open different molds or make complex modifications to electrical connectors, which is not only time-consuming and labor-intensive, but also costly and difficult to meet customer requirements. Summary of the Invention

[0004] The purpose of this invention is to provide an electrical connector that is not only more versatile but also reduces costs.

[0005] The present invention provides an electrical connector, including a housing, multiple terminals and multiple wires. The housing has a connecting groove at one end along a first direction. The bottom wall of the connecting groove has multiple spaced connecting holes. The side wall of the connecting groove has multiple spaced snap-fit ​​structures. The multiple terminals are respectively inserted into the multiple connecting holes. The multiple wires are respectively electrically connected to the ends of the multiple terminals located in the connecting groove. The first direction is parallel to the axial direction of the connecting holes. The electrical connector also includes: A snap-fit ​​protective cover is fitted over the outside of the connection point between the terminal and the wire. One end of the snap-fit ​​protective cover is inserted into the connection groove and has multiple snap-fit ​​structures. These multiple snap-fit ​​structures are correspondingly arranged and snap-fit ​​with each other. Alternatively... The injection molded protective cover is injection molded on the outside of the connection between the terminal and the wire, and one end of the injection molded protective cover is located in the connection groove and forms multiple injection molded connection structures. The multiple injection molded connection structures are correspondingly arranged and connected with the multiple snap-fit ​​structures.

[0006] As an optional solution for the electrical connector, potting compound is provided between the snap-fit ​​protective cover and the housing; and / or, Encapsulating adhesive is provided between the connection point of the terminal and the wire and the snap-fit ​​protective cover.

[0007] As an optional solution for the electrical connector, one of the snap-fit ​​structure and the snap-fit ​​mating structure is a snap groove and the other is a snap protrusion. The gap between the snap protrusion and the groove wall of the snap groove is in the range of 0.1mm to 0.2mm.

[0008] As an optional solution for the electrical connector, the snap-fit ​​protective cover further includes a first stepped surface, and one end face of the housing with the connecting groove abuts against the first stepped surface along the first direction; or... The injection-molded protective cover has a second stepped surface, and one end face of the outer shell with the connecting groove abuts against the second stepped surface along the first direction.

[0009] As an alternative solution for the electrical connector, the slot sidewall includes a plurality of sidewall bodies arranged sequentially and connected around the first direction, and a plurality of snap-fit ​​structures are respectively disposed on the plurality of sidewall bodies.

[0010] As an optional solution for the electrical connector, one of the snap-fit ​​structure and the snap-fit ​​mating structure is a snap-fit ​​groove, and the other is a snap-fit ​​protrusion; The cross-sectional area of ​​the slot is proportional to the length of the corresponding sidewall along the arrangement direction of the multiple sidewalls; the cross-section of the slot is perpendicular to the wall thickness direction of the corresponding sidewall.

[0011] As an alternative solution for the electrical connector, the sidewall of the connecting groove is provided with a guide structure extending along a first direction, and the snap-fit ​​protective cover is provided with a guide mating structure corresponding to the guide structure, and the guide mating structure is inserted into the guide structure along the first direction.

[0012] As an alternative to the electrical connector, the housing is provided with a mounting snap-fit ​​portion at one end opposite to the connecting groove along the first direction.

[0013] As an alternative to the electrical connector, one end of the terminal is located outside the connection slot.

[0014] As an alternative to electrical connectors, at least two of the multiple terminals are of different models.

[0015] Compared with the prior art, the above technical solution has at least the following advantages or beneficial effects: The electrical connector of the present invention, by inserting one end of the snap-fit ​​protective cover into the connecting groove and by having multiple snap-fit ​​mating structures snap into multiple snap-fit ​​structures respectively, not only enables the rapid assembly of the housing and the snap-fit ​​protective cover, but also improves the sealing performance between the housing and the snap-fit ​​protective cover, and enhances the protection of the connection between the terminals and the wires.

[0016] Furthermore, an injection-molded protective cover can be directly injection-molded at one end of the outer shell along the first direction using an injection molding process. This means that by replacing the snap-fit ​​protective cover with an injection-molded protective cover, the sealing performance between the outer shell and the injection-molded protective cover can be improved, as well as the protection of the connection between the terminals and wires. During the injection molding of the protective cover, positioning one end within the connecting groove allows for the formation of a tightly fitting injection-molded connection structure at the corresponding location on the protective cover and the snap-fit ​​structure. This connection between the injection-molded connection structure and the snap-fit ​​structure enhances the stability of the connection between the injection-molded protective cover and the outer shell.

[0017] The electrical connector of the present invention can be assembled with the housing and the snap-fit ​​protective cover by means of snap-fit ​​or by means of injection molding, thereby meeting the assembly needs of different users, and eliminating the need to open different molds or make complex modifications for the electrical connector, which helps to reduce costs. Attached Figure Description

[0018] Figure 1 This is an exploded view of the electrical connector in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first structure of the electrical connector in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second structure of the electrical connector in an embodiment of the present invention; Figure 4 This is a schematic diagram of the first structure of the outer shell in an embodiment of the present invention; Figure 5 This is a schematic diagram of the second structure of the outer shell in an embodiment of the present invention; Figure 6 This is a schematic diagram of the first structure of the snap-fit ​​protective cover in an embodiment of the present invention; Figure 7 This is a schematic diagram of the second structure of the snap-fit ​​protective cover in an embodiment of the present invention; Figure 8 This is a schematic diagram of the first structure of the injection-molded protective cover in an embodiment of the present invention; Figure 9 This is a schematic diagram of the second structure of the injection-molded protective cover in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the outer shell and terminals in an embodiment of the present invention.

[0019] In the picture: 1. Outer shell; 11. Connecting groove; 111. Side wall; 111a. First side wall; 111b. Second side wall; 12. Connecting hole; 13. Slot; 13a. First slot; 13b. Second slot; 14. Guide block; 15. Mounting snap-fit ​​part; 2. Terminal; 3. Wire; 4. Snap-fit ​​protective cover; 41. Snap-fit ​​protrusion; 411. Guide slope; 42. Guide groove; 43. Protruding rib; 44. First step surface; 5. Injection-molded protective cover; 51. Connecting block; 52. Second step surface. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides an electrical connector, including a housing 1, multiple terminals 2, multiple wires 3, and a snap-fit ​​protective cover 4. The housing 1 has a connecting groove 11 at one end along a first direction. The bottom wall of the connecting groove 11 has multiple spaced connecting holes 12. The side wall of the connecting groove 11 has multiple spaced snap-fit ​​structures. The multiple terminals 2 are respectively inserted into the multiple connecting holes 12. The multiple wires 3 are respectively electrically connected to the ends of the multiple terminals 2 located in the connecting groove 11. The first direction is parallel to the axial direction of the connecting holes 12. The snap-fit ​​protective cover 4 is sleeved on the outside of the connection between the terminals 2 and the wires 3. One end of the snap-fit ​​protective cover 4 is inserted into the connecting groove 11 and has multiple snap-fit ​​mating structures. The multiple snap-fit ​​mating structures are correspondingly arranged and snap-fit ​​with the multiple snap-fit ​​structures.

[0028] As an alternative, such as Figure 3 As shown, the electrical connector may also include an injection-molded protective cover 5, and the snap-fit ​​protective cover 4 may be replaced by the injection-molded protective cover 5. The injection-molded protective cover 5 is injection-molded on the outside of the connection between the terminal 2 and the wire 3, and one end of the injection-molded protective cover 5 is located in the connection groove 11 and forms multiple injection-molded connection structures. The multiple injection-molded connection structures are correspondingly set and connected with the multiple snap-fit ​​structures.

[0029] In this embodiment, the electrical connector, by inserting one end of the snap-fit ​​protective cover 4 into the connecting groove 11 and by having multiple snap-fit ​​mating structures snap-fit ​​with multiple snap-fit ​​structures respectively, not only can the housing 1 and the snap-fit ​​protective cover 4 be quickly assembled, but also the sealing performance between the housing 1 and the snap-fit ​​protective cover 4 can be improved, thereby enhancing the protection of the connection between the terminal 2 and the wire 3.

[0030] Furthermore, the injection-molded protective cover 5 can be directly injection-molded at one end of the outer shell 1 along the first direction using an injection molding process. In other words, by replacing the snap-fit ​​protective cover 4 with the injection-molded protective cover 5, the sealing performance between the outer shell 1 and the injection-molded protective cover 5 can be improved, and the protection at the connection point between the terminal 2 and the wire 3 can be enhanced. When injection-molding the protective cover 5, one end of the protective cover 5 is positioned within the connecting groove 11, allowing the corresponding portion of the protective cover 5 to form a tightly fitting injection-molded connection structure. This connection between the injection-molded connection structure and the snap-fit ​​structure improves the connection stability between the injection-molded protective cover 5 and the outer shell 1.

[0031] In other words, the electrical connector in this embodiment can be assembled with the outer shell 1 and the snap-fit ​​protective cover 4 by snap-fit ​​or by injection molding, thereby meeting the assembly needs of different users. It also eliminates the need to open different molds or make complex modifications for the electrical connector, which helps to reduce costs.

[0032] Specifically, in this embodiment, as Figures 2 to 9 As shown, the snap-fit ​​structure is a slot 13. Further, the snap-fit ​​mating structure is a protrusion 41. Further, the injection molding connection structure is a connecting block 51 filled within the slot 13, meaning the connecting block 51 is tightly fitted to the inner wall of the slot 13. During the injection molding process of the protective cover 5 onto the outer shell 1, the slot 13 can serve as a turbulent deceleration zone for the molten injection material, facilitating the formation of the connecting block 51 within the slot 13 after the injection material has solidified. This also improves the tightness of the fit between the connecting block 51 and the inner wall of the slot 13, creating a reliable mechanical lock between the connecting block 51 and the slot 13. This not only improves the convenience of the injection molding operation but also enhances the connection stability between the injection molded protective cover 5 and the outer shell 1.

[0033] In other embodiments, the snap-fit ​​structure can also be a snap protrusion 41. Further, the snap-fit ​​structure is a snap groove 13. Further, the injection-molded connecting structure surrounds the snap protrusion 41 and forms a connecting groove 11 corresponding to the snap protrusion 41, so that the snap protrusion 41 fills the connecting groove 11, that is, the snap protrusion 41 is tightly fitted to the inner wall of the connecting groove 11.

[0034] Specifically, the slot 13 is a through slot. Of course, as an alternative, the slot 13 can also be a non-through groove.

[0035] Furthermore, the protrusion 41 is provided with a guide slope 411, which can guide the protrusion 41 to smoothly enter the slot 13, thereby improving the ease of assembly between the outer shell 1 and the snap-fit ​​protective cover 4.

[0036] In some embodiments, the snap-fit ​​protective cover 4 and the housing 1 are sealed with potting compound, which not only further improves the sealing performance between the housing 1 and the snap-fit ​​protective cover 4, but also reduces the assembly dimensional accuracy requirements of the snap-fit ​​protective cover 4 and the housing 1. This helps to reduce the time and cost required to open special molds for the snap-fit ​​protective cover 4 and the housing 1, and improves the yield of electrical connectors.

[0037] In some embodiments, the gap between the protrusion 41 and the groove wall of the groove 13 is in the range of 0.1mm to 0.2mm, thereby forming a capillary gap between the protrusion 41 and the groove wall of the groove 13. When the end of the snap-fit ​​protective cover 4 inserted into the connecting groove 11 is sealed with the outer shell 1 by potting glue, a self-sealing is formed between the protrusion 41 and the groove wall of the groove 13 by the surface tension of the potting glue before the potting glue cures. This prevents glue overflow without additional fixtures, which helps to improve the convenience of the potting operation and improves the sealing performance between the snap-fit ​​protective cover 4 and the outer shell 1.

[0038] For example, the gap between the protrusion 41 and the groove wall of the slot 13 can be any value between 0.1mm and 0.2mm. For instance, the gap between the protrusion 41 and the groove wall of the slot 13 can be 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, or 0.2mm.

[0039] Specifically, the snap-fit ​​protective cover 4 has a ring structure, and the axis of the ring structure is parallel to the first direction. It can be understood that by potting and sealing the snap-fit ​​protective cover 4 and the outer shell 1, not only can the cured potting compound seal the gap between the snap-fit ​​protective cover 4 and the outer shell 1, but the cured potting compound can also fill the interior of the snap-fit ​​protective cover 4 (i.e., the central hole of the ring structure snap-fit ​​protective cover 4) and cover the connection between each terminal 2 and the wire 3. In other words, each terminal 2 and its connected wire 3, the snap-fit ​​protective cover 4 and the outer shell 1 form a whole, thereby improving the support and protection effect of the connection between each terminal 2 and the wire 3.

[0040] Furthermore, the injection molded protective cover 5, which is injection molded onto the outer shell 1 through the injection molding process, can also allow the molten injection material to fill the connecting groove 11 and the slot 13, thereby improving the sealing performance between the injection molded protective cover 5 and the outer shell 1. It can also allow the cured injection material to cover the connection points between each terminal 2 and the wire 3. In other words, it makes each terminal 2 and its connected wire 3, the injection molded protective cover 5 and the outer shell 1 form a whole, thereby improving the support and protection effect on the connection points between each terminal 2 and the wire 3.

[0041] In some embodiments, the groove sidewall includes a plurality of sidewall bodies 111 arranged sequentially and connected around a first direction, and a plurality of snap-fit ​​structures are respectively provided on the plurality of sidewall bodies 111, thereby improving the uniformity of force distribution on the snap-fit ​​protective cover 4 and improving the connection stability between the snap-fit ​​protective cover 4 and the outer shell 1. That is, the arrangement direction of the plurality of sidewall bodies 111 is perpendicular to the first direction.

[0042] It should be noted that since multiple snap-fit ​​structures are correspondingly set and snap-fitted with each other, that is, the shape of the snap-fit ​​structure matches the shape of the snap-fit ​​structure, and the size of the snap-fit ​​structure matches the size of the snap-fit ​​structure, the connection stability between the snap-fit ​​structures is ensured, so as to avoid problems such as movement after the snap-fit ​​protective cover 4 and the outer shell 1 are assembled. Specifically, in this embodiment, the cross-sectional area of ​​the slot 13 is approximately equal to the cross-sectional area of ​​the snap protrusion 41 that it snaps with, or the cross-sectional area of ​​the slot 13 is slightly larger than the cross-sectional area of ​​the snap protrusion 41 that it snaps with; the cross-section of the slot 13 is parallel to the cross-section of the snap protrusion 41, and the cross-section of the slot 13 is perpendicular to the wall thickness direction of the side wall 111 to which it corresponds. When the snap-fit ​​structure is the slot 13 and the snap-fit ​​structure is the snap protrusion 41, the side wall 111 to which the slot 13 corresponds is the side wall 111 where the slot 13 is located. When the snap-fit ​​structure is a snap-fit ​​protrusion 41 and the snap-fit ​​mating structure is a snap-fit ​​groove 13, the side wall corresponding to the snap-fit ​​groove 13 is the side wall body 111 where the snap-fit ​​protrusion 41 is located.

[0043] Furthermore, the cross-sectional area of ​​the slot 13 is proportional to the length of its corresponding sidewall 111 along the arrangement direction of the multiple sidewalls 111. This allows for minimizing the size of the slot 13 and the corresponding protrusion 41 while ensuring the stability of the engagement between the slot 13 and the protrusion 41, thus facilitating the mold design of the outer shell 1 and the engagement protective cover 4. Specifically, along the arrangement direction of the multiple sidewalls 111, the length of the slot 13 is proportional to the length of its corresponding sidewall 111.

[0044] Specifically, in this embodiment, the cross-section of the connecting groove 11 is approximately U-shaped, and the cross-section of the connecting groove 11 is perpendicular to the first direction. Further, the plurality of sidewalls 111 include a first sidewall 111a located at the bottom of the U-shape, and two second sidewalls 111b respectively connected to both ends of the first sidewall 111a. Along the arrangement direction of the plurality of sidewalls 111, the length of the first sidewall 111a is greater than the length of the second sidewall 111b. For ease of description, the slot 13 provided on the first sidewall 111a is referred to as the first slot 13a, and the slot 13 provided on the second sidewall 111b is referred to as the second slot 13b. That is, the cross-sectional area of ​​the first slot 13a is greater than the cross-sectional area of ​​the second slot 13b; the cross-section of the first slot 13a is perpendicular to the wall thickness direction of the first sidewall 111a, and the cross-section of the second slot 13b is perpendicular to the wall thickness direction of the second sidewall 111b. More specifically, along the arrangement direction of the plurality of sidewall bodies 111, the length of the first slot 13a is greater than the length of the second slot 13b. Further, along the first direction, the width of the first slot 13a is equal to the width of the second slot 13b.

[0045] In some embodiments, the sidewall of the connecting groove 11 is provided with a guide structure extending along a first direction, and the snap-fit ​​protective cover 4 is provided with a guide mating structure corresponding to the guide structure. The guide mating structure and the guide structure are inserted into each other along the first direction, thereby enabling the snap-fit ​​mating structure and the snap-fit ​​structure to be quickly aligned, improving the efficiency and accuracy of the assembly of the snap-fit ​​protective cover 4 and the outer shell 1. This embodiment does not limit the number or arrangement of the guide structures.

[0046] For example, the guiding structure is a guide block 14, and the guiding mating structure is a guide groove 42. Of course, the guiding structure can also be a guide groove 42, and the guiding mating structure can be a guide block 14.

[0047] It should be further explained that by setting a guide structure on the side wall of the connecting groove 11, the area of ​​the inner wall of the connecting groove 11 can be increased when it is assembled with the injection molded protective cover 5, thereby increasing the contact area between the outer shell 1 and the injection molded protective cover 5, which is beneficial to improving the connection stability between the outer shell 1 and the injection molded protective cover 5.

[0048] In some embodiments, the inner wall of the snap-fit ​​protective cover 4 is provided with at least one protruding rib 43, which can increase the strength of the snap-fit ​​protective cover 4, extend its service life, and improve the protective effect of the snap-fit ​​protective cover 4 on the connection between the terminal 2 and the wire 3; on the other hand, it can increase the contact area between the snap-fit ​​protective cover 4 and the potting compound during potting, thereby improving the connection stability between the potting compound and the snap-fit ​​protective cover 4. This embodiment does not limit the number or arrangement of the protruding ribs 43.

[0049] In some embodiments, the snap-fit ​​protective cover 4 is further provided with a first stepped surface 44, and one end face of the outer shell 1 with the connecting groove 11 abuts against the first stepped surface 44 in the first direction, thereby preventing the snap-fit ​​protective cover 4 from moving along the first direction, which is beneficial to improving the connection stability and sealing between the snap-fit ​​protective cover 4 and the outer shell 1.

[0050] In some embodiments, the injection-molded protective cover 5 is formed with a second stepped surface 52, and one end face of the outer shell 1 with the connecting groove 11 abuts against the second stepped surface 52 along the first direction, thereby preventing the injection-molded protective cover 5 from moving along the first direction, which is beneficial to improving the connection stability and sealing between the injection-molded protective cover 5 and the outer shell 1.

[0051] In some embodiments, the housing 1 has a mounting latching portion 15 at one end opposite to the connecting groove 11 along a first direction, thereby facilitating the connection of the electrical connector to electronic devices or other connectors. Specifically, the electronic device or other connector has a mounting latching mating portion. By engaging the mounting latching portion 15 with the mounting latching mating portion, the connection between the electrical connector and the electronic device or other connector can be achieved, which is convenient to operate and has high connection stability. Exemplarily, the electrical connector can be a male connector or a female connector.

[0052] Specifically, the mounting snap-fit ​​part 15 is located at the recess of the U-shaped connecting groove 11, thereby allowing the mounting snap-fit ​​part 15 to be avoided by the recess. For example, the mounting snap-fit ​​part 15 is a snap-fit ​​elastic arm, and the mounting snap-fit ​​mating part is a snap-fit ​​groove. By pressing, the snap-fit ​​elastic arm can be elastically deformed and snapped into the snap-fit ​​groove.

[0053] In some embodiments, at least two of the multiple terminals 2 are of different models, thereby enabling them to be adapted to different types of wires 3, such as power lines and signal lines, thus improving the versatility of the electrical connector.

[0054] In some embodiments, such as Figure 10 As shown, one end of terminal 2 is located outside the connecting groove 11, which improves the convenience of connecting wire 3 to the corresponding terminal 2. For example, the end of terminal 2 located outside the connecting groove 11 is provided with a solder cup, and one end of wire 3 is soldered and fixed in the solder cup of the corresponding terminal 2, which facilitates the soldering operation between wire 3 and the corresponding terminal 2.

[0055] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An electrical connector, characterized in that, The device includes a housing (1), multiple terminals (2) and multiple wires (3). The housing (1) has a connecting groove (11) at one end along a first direction. The bottom wall of the connecting groove (11) has multiple spaced connecting holes (12). The side wall of the connecting groove (11) has multiple spaced snap-fit ​​structures. The multiple terminals (2) are respectively inserted into the multiple connecting holes (12). The multiple wires (3) are respectively electrically connected to one end of the multiple terminals (2) located in the connecting groove (11). The first direction is parallel to the axial direction of the connecting holes (12). The electrical connector also includes: A snap-fit ​​protective cover (4) is fitted onto the outside of the connection between the terminal (2) and the wire (3). One end of the snap-fit ​​protective cover (4) is inserted into the connecting groove (11) and has multiple snap-fit ​​structures. The multiple snap-fit ​​structures are correspondingly arranged and snap-fit ​​with the multiple snap-fit ​​structures; or, The injection molded protective cover (5) is injection molded on the outside of the connection between the terminal (2) and the wire (3), and one end of the injection molded protective cover (5) is located in the connection groove (11) and forms multiple injection molded connection structures. The multiple injection molded connection structures are correspondingly arranged and connected with the multiple snap-fit ​​structures.

2. The electrical connector according to claim 1, characterized in that, A potting compound is provided between the snap-fit ​​protective cover (4) and the outer shell (1); and / or, Encapsulating adhesive is provided between the connection point of the terminal (2) and the wire (3) and the snap-fit ​​protective cover (4).

3. The electrical connector according to claim 1, characterized in that, One of the snap-fit ​​structure and the snap-fit ​​mating structure is a snap groove (13) and the other is a snap protrusion (41). The gap between the snap protrusion (41) and the groove wall of the snap groove (13) is in the range of 0.1mm to 0.2mm.

4. The electrical connector according to claim 1, characterized in that, The snap-fit ​​protective cover (4) is further provided with a first stepped surface (44), and one end face of the outer shell (1) of the connecting groove (11) abuts against the first stepped surface (44) along the first direction; or, The injection-molded protective cover (5) has a second stepped surface (52), and one end face of the outer shell (1) with the connecting groove (11) abuts against the second stepped surface (52) along the first direction.

5. The electrical connector according to claim 1, characterized in that, The groove sidewall includes a plurality of sidewall bodies (111) arranged sequentially and connected around the first direction, and a plurality of the snap-fit ​​structures are respectively provided on the plurality of sidewall bodies (111).

6. The electrical connector according to claim 5, characterized in that, One of the snap-fit ​​structure and the snap-fit ​​mating structure is a slot (13), and the other is a protrusion (41); The cross-sectional area of ​​the slot (13) is proportional to the length of the corresponding side wall (111) along the arrangement direction of the multiple side walls (111); the cross-section of the slot (13) is perpendicular to the wall thickness direction of the corresponding side wall (111).

7. The electrical connector according to any one of claims 1-6, characterized in that, The connecting groove (11) has a guide structure extending along the first direction on its side wall, and the snap-fit ​​protective cover (4) has a guide mating structure corresponding to the guide structure. The guide mating structure is inserted into the guide structure along the first direction.

8. The electrical connector according to any one of claims 1-6, characterized in that, The outer casing (1) has a mounting clip (15) at one end away from the connecting groove (11) along the first direction.

9. The electrical connector according to any one of claims 1-6, characterized in that, One end of the terminal (2) is located outside the connecting groove (11).

10. The electrical connector according to any one of claims 1-6, characterized in that, Of the plurality of terminals (2), at least two of the terminals (2) are of different types.

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