Connector for automobile rear-view camera PCB

Abstract

The application discloses a connector for a PCB of an automobile rear-view camera, which comprises an insulating base and four terminals. The insulating base comprises a top surface, a bottom surface, a side surface one and a side surface two. The top surface is provided with a matching groove extending to the two side surfaces one. The terminal comprises a welding part, a limiting part and an elastic part connected in sequence. The bottom surface is provided with four groups of installation groups. Each group of installation groups comprises a limiting groove, a through groove and a matching cavity. The matching cavities of the four groups of installation groups are arranged on the bottom surface in a 2*2 matrix mode. In the direction perpendicular to the side surface two, the limiting groove is located on the side of the same group of matching cavities away from the other matching cavity, and the through groove is located on the side of the same group of limiting grooves away from the same group of matching cavities. The two ends of the through groove are respectively communicated with the limiting groove and the side surface two. In the direction perpendicular to the side surface one, the width of the limiting groove is greater than the width of the matching cavity. The side of the limiting part away from the elastic part is provided with two notches. An upper elastic sheet is integrally formed in the notch. The groove wall of the limiting groove away from the through groove is provided with a positioning groove.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, specifically relating to a connector for a PCB of an automotive rearview camera. Background Technology

[0002] As a core component of in-vehicle visual safety systems, the rearview camera's main function is to eliminate blind spots behind the vehicle, comprehensively improving safety and ease of operation in parking and low-speed driving scenarios. It is currently a mainstream standard component in passenger vehicles. The PCB (Printed Circuit Board) is a core fundamental component of the rearview camera, enabling stable electrical connections, reliable power supply, and high-speed signal transmission for its internal components.

[0003] Connectors for electrical interconnection are integrated on PCBs. These connectors typically include an insulating base and terminals. The insulating base has a limiting groove, and the terminals include a limiting part, a soldering part, and a resilient part. The limiting part mates with the limiting groove of the insulating base, the soldering part is soldered to the PCB pads, and the resilient part elastically abuts against the mating connector. However, the existing connector structure described above has the following technical drawbacks: 1. Existing connector structures lack a visual confirmation structure for positioning, making it impossible to confirm whether the limiting part is fully inserted into the limiting slot through visual inspection or simple testing methods. If the limiting part is not fully inserted into the limiting slot, it may cause the terminal to deviate from the preset position, which will not only cause poor soldering, but also cause the initial position of the elastic part to deviate from the preset position, changing its deformation and contact normal pressure during operation, ultimately resulting in a decrease in connector contact performance.

[0004] 2. Existing connectors' limiting grooves can only provide basic limiting for the terminal insertion direction. When the elastic part undergoes elastic deformation, it will cause the limiting part to swing slightly within the limiting groove. After repeated deformation of the elastic part or long-term use, the actual working state of the terminal may deviate from the design requirements. This deviation will not only reduce the connector's working stability and shorten its service life, but in severe cases, it may also cause the rearview camera to malfunction, directly affecting vehicle driving and parking safety. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a connector that is more stable than the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a connector for a PCB of a car rearview camera, comprising an insulating base and four terminals. The outer wall of the insulating base includes a top surface, a bottom surface, a first side surface, and a second side surface. The top surface and the bottom surface are arranged opposite to each other. The first side surface has two terminals arranged opposite to each other, and the second side surface has two terminals arranged opposite to each other. The top surface is provided with a mating groove, the opening of which extends to the first two sides. The terminals are integrally formed from sheet metal and include a soldering part, a limiting part, and an elastic part connected in sequence. The bottom surface is provided with four sets of mounting groups corresponding to the first and second terminals. Each mounting group includes a limiting groove for the limiting part to be inserted, a through groove for the soldering part to be inserted, and a mating cavity for the elastic part to be inserted and communicating with the mating groove. The mating cavities of the four mounting groups are arranged in a 2×2 matrix on the bottom surface. Along the direction perpendicular to the second side surface, the limiting groove is positioned... On the side of the mating cavity away from another mating cavity in the same group, the through groove is located on the side of the limiting groove away from the mating cavity in the same group. The two ends of the through groove are respectively connected to the limiting groove and the second side. Along the direction perpendicular to the first side, the width of the limiting groove is greater than the width of the mating cavity. The limiting part is provided with two notches on the side away from the elastic part. The connection position between the welding part and the limiting part is located between the two notches. An upper spring piece is integrally formed in the notch and protrudes away from the through groove. The groove wall of the limiting groove away from the through groove is provided with a positioning groove for the upper spring piece to be inserted. The cross section of the positioning groove along the direction perpendicular to the second side is a right triangle. The right angle of the right triangle is located at the opening of the positioning groove. When the upper spring piece is inserted into the positioning groove, the upper spring piece abuts against the groove wall of the positioning groove, and there is a clearance between the groove wall of the positioning groove near the bottom and the upper spring piece to facilitate the insertion of the upper spring piece into the positioning groove.

[0007] By adopting the above solution, the upper spring sheet and the positioning groove form a limit, which can effectively prevent the problem of the limiting part from becoming loose from the limiting groove during the transportation and soldering process of the connector. Under the elastic force of the upper spring, the limiting part can reduce the positional offset of the limiting part in the limiting groove before and after the elastic part is inserted and receives the force, so that the actual deformation stroke of the elastic part matches the design value, thereby improving the contact stability and insertion and removal service life of the connector; at the same time, the clearance between the positioning groove and the upper spring facilitates the upper spring to be embedded in the positioning groove, reducing the assembly difficulty and improving the assembly yield.

[0008] After the terminals and insulating base are assembled, the end of the welded part away from the limiting part extends out of the through groove to the outside of the second side, and the length of the welded part extending out of the through groove is less than or equal to 1 / 2 of its length inside the through groove; along the direction perpendicular to the bottom surface, the thickness of the welded part is less than the depth of the through groove, which facilitates the welding of the welded part to the pad.

[0009] As a further feature of the present invention, the positioning groove is disposed at the connection between the limiting groove and the mating cavity, and the positioning groove is connected to the mating cavity; along the direction perpendicular to the first side, the minimum distance between two notches on the same terminal is greater than or equal to the width of the corresponding through groove, and the minimum distance between two upper spring pieces on the same terminal is less than the minimum distance between the corresponding two positioning grooves; along the direction perpendicular to the first side, when the upper spring piece is located in the positioning groove, the width of the upper spring piece in the positioning groove is greater than the width of the upper spring piece in the mating cavity.

[0010] The above-described structure, which connects the positioning groove to the mating cavity, simplifies the injection mold design of the insulating base and reduces processing difficulty. When the terminal and insulating base are correctly assembled, part of the upper spring contact is located within the mating cavity. When the limiting part is not fully inserted into the limiting groove, the upper spring contact abuts against the groove wall furthest from the through groove. Therefore, by using laser ranging or other methods to detect the presence of the upper spring contact structure within the mating cavity, it is possible to quickly determine whether the terminal is properly assembled, improving inspection efficiency and preventing defective products from being shipped out.

[0011] As a further feature of the present invention, the limiting part is provided with two openings on the side near the elastic part, and the two openings are respectively located on both sides of the connection position between the elastic part and the limiting part; a lower spring piece is integrally formed in the opening and protrudes away from the mating cavity, and the connection between the lower spring piece and the opening is located on the inner wall of the opening away from the welding part; when the limiting part is located in the limiting groove, the lower spring piece abuts against the groove wall of the limiting groove away from the mating cavity.

[0012] By adopting the above solution, the lower and upper spring sheets work together to significantly reduce the positional offset of the limiting part in the limiting groove before and after the elastic part is inserted and subjected to force. This makes the actual deformation stroke of the elastic part match the design value, thereby improving the stability of the connector's insertion contact and the reliability of its long-term use.

[0013] As a further provision of the present invention, the mating cavity includes a cavity one and a cavity two that are perpendicular to and interconnected with each other. The limiting groove is connected to the cavity two. The elastic part includes a bending section one, a connecting section one, a bending section two, a connecting section two, a bending section three, and a tail section connected in sequence. The bending section one is connected to the limiting part. When the terminal is in the initial state, the bending angle of the bending section one is 179°~181°, the bending angle of the bending section two is 209°~211°, and the bending angle of the bending section three is 249°~251°. °; The length of the limiting part in the direction perpendicular to the bottom surface is greater than the length of the connecting section two, and the length of the connecting section two is greater than twice the length of the connecting section one; The bending radius of the bending section two is greater than the bending radius of the bending section three, and the bending radius of the bending section three is greater than the bending radius of the bending section one; The two side walls of the tail section are both convex curved surfaces, and the two side walls are close to each other in the direction away from the bending section three; The bending section one includes a fishtail-shaped reinforcing end connected to the limiting part, and the surface of the reinforcing end facing and away from side one is both concave curved surfaces.

[0014] The initial state of the terminal refers to the state in which the terminal is assembled to the insulating base and the elastic part is not subjected to external force by the mating connector. Using the above scheme, the bending angle of the first bending segment makes the first connecting segment approximately parallel to the limiting part, the bending angle of the second bending segment makes the included angle between the first and second connecting segments approximately 30°, and the third bending segment is used to abut against the mating connector.

[0015] The multi-segment bending structure design of the elastic part can maximize the effective deformation of the elastic part within a limited installation space, reduce the risk of stress relaxation after repeated mating, ensure stable contact with the mating connector, and avoid problems such as poor contact and signal interruption; the reinforcing end is fishtail shaped, which can improve the bending strength at the connection between the elastic part and the limiting part.

[0016] As a further feature of the present invention, when the terminal is in the initial state, the first bending section and the first connecting section are both located in the first cavity and the mating groove, the second bending section is located in the second cavity, and the second connecting section, the third bending section and the tail section are all located in the mating groove.

[0017] By adopting the above scheme, it is ensured that the mating connector can be inserted smoothly, and that the three-section bending segment is completely located in the mating groove in the initial state, thus ensuring effective contact when the mating connector is inserted.

[0018] As a further provision of the present invention, when the terminal is in the initial state, the maximum distance from the bending section three to the bottom surface is equal to the distance from the inner wall of the cavity two away from the bottom surface to the bottom surface, and the minimum distance from the bending section three to the cavity one is greater than the distance from the cavity opening of the cavity one facing away from the ground to the bottom surface.

[0019] By adopting the above scheme, the relative position of the maximum deformation fulcrum of the elastic part and the insulating base is limited, ensuring that the deformation stroke of the elastic part meets the design expectations, avoiding elastic failure caused by overpressure deformation during insertion, and improving the performance stability of the connector after repeated insertion and removal.

[0020] As a further feature of the present invention, when the terminal is under stress, the second bending segment is located in both cavity one and cavity two, and there is a gap between the second bending segment and the limiting part. The third bending segment is located in the mating groove, and the end of the tailing segment away from the third bending segment is located in cavity two. The distance from the tailing segment to the bottom surface is greater than the distance from the second bending segment to the bottom surface.

[0021] The stress state of the terminal refers to the state in which the terminal is assembled to the insulating base and the elastic part is fully inserted with the mating connector. This scheme ensures that only the bending section three forms effective contact with the mating connector, preventing interference between other sections of the elastic part and the mating terminal and insulating base, while also preventing permanent deformation caused by excessive deformation of the elastic part.

[0022] As a further feature of the present invention, a single terminal includes two symmetrically arranged elastic portions. The symmetrical plane of the two elastic portions located on the same terminal bisects the limiting portion and the welding portion, and the two notches and two openings on the same terminal are symmetrically arranged along the symmetrical plane. Along the direction perpendicular to the side surface, the maximum distance between the two elastic portions located on the same terminal remains consistent along the direction away from the limiting portion, and the minimum distance gradually increases along the direction away from the limiting portion.

[0023] The above-mentioned scheme improves the stability and anti-interference capability of signal transmission by using the symmetrical design of the double elastic parts of a single terminal; at the same time, the symmetrical structure can ensure that the elastic parts are subjected to uniform force during insertion; the outward-expanding spacing design of the elastic parts can improve the stability of the positive pressure of contact with the mating terminal and enhance the vibration resistance.

[0024] As a further feature of the invention, along a direction perpendicular to the side surface, the width of the welded portion is between the maximum and minimum distance between the two elastic portions of the same terminal.

[0025] By adopting the above solution, it is ensured that when the terminal is inserted and subjected to force, the force can be evenly transmitted to the solder joint, thereby improving the vibration resistance and mechanical reliability of the connector.

[0026] As a further feature of the present invention, the vertical distance from the bottom of the mating groove to the top surface is greater than or equal to twice the vertical distance from the bottom of the mating groove to the bottom surface.

[0027] By adopting the above solution, we can ensure that the mating connector has a sufficient insertion depth and avoid poor contact and signal interruption caused by incomplete insertion.

[0028] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0029] Appendix Figure 1 This is a front view of a specific embodiment of the present invention; Appendix Figure 2 This is a schematic diagram of the back of a specific embodiment of the present invention; Appendix Figure 3 This is a schematic diagram of the back of the insulating base according to a specific embodiment of the present invention; Appendix Figure 4 Terminal schematic diagram of a specific embodiment of the present invention Figure 1 ; Appendix Figure 5 Terminal schematic diagram of a specific embodiment of the present invention Figure 2 ; Appendix Figure 6 This is a bottom view of a specific embodiment of the present invention; Appendix Figure 7 For the appendix Figure 6 A schematic diagram of the X part; Appendix Figure 8 For the appendix Figure 6 A set of installation group diagrams; Appendix Figure 9 This is an initial state diagram of a specific embodiment of the present invention; Appendix Figure 10 This is a force state diagram of a specific embodiment of the present invention.

[0030] Insulating base 1, top surface 11, bottom surface 12, side surface 13, side surface 2 14, mating groove 15, terminal 2, welding part 3, limiting part 4, notch 41, upper spring piece 42, opening 43, lower spring piece 44, elastic part 5, bending section 1 51, reinforcing end 511, connecting section 1 52, bending section 2 53, connecting section 2 54, bending section 3 55, tail section 56, mounting group 6, limiting groove 61, positioning groove 611, through groove 62, mating cavity 63, cavity 1 631, cavity 2 632. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that, unless otherwise specified, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, to more clearly show the various components and the mating relationships between them, some components in the accompanying drawings may be enlarged, reduced, or simplified; the dimensional relationships and shapes in the accompanying drawings should not be directly interpreted as actual dimensions and shapes.

[0033] Specific embodiments of the present invention are shown in the accompanying drawings.

[0034] A connector for a PCB of a car rearview camera includes an insulating base 1 and four terminals 2. The insulating base 1 is rectangular, and its outer wall includes a top surface 11, a bottom surface 12, a first side surface 13, and a second side surface 14. The top surface 11 and the bottom surface 12 are arranged opposite to each other. There are two first side surfaces 13 and two second side surfaces 14, which are also arranged opposite to each other. The top surface 11 is provided with a mating groove 15. The groove opening of the mating groove 15 extends to the two first side surfaces 13 to form a through groove. The vertical distance from the bottom of the mating groove 15 to the top surface 11 is equal to twice the vertical distance from the bottom of the mating groove 15 to the bottom surface 12, ensuring sufficient insertion depth of the mating connector.

[0035] Terminal 2 is integrally formed from sheet metal and includes a welding part 3, a limiting part 4, and an elastic part 5 connected in sequence. The bottom surface 12 is provided with four sets of mounting groups 6 corresponding to each terminal 2. Each set of mounting groups 6 includes a limiting groove 61 for the limiting part 4 to be inserted, a through groove 62 for the welding part 3 to be inserted, and a mating cavity 63 for the elastic part 5 to be inserted and communicating with the mating groove 15. The mating cavities 63 of the four sets of mounting groups 6 are arranged in a 2×2 matrix on the bottom surface 12. Along the direction perpendicular to the second side 14, the limiting groove 61 is located on the side of the mating cavity 63 in the same group away from the other mating cavity 63, and the through groove 62 is located on the side of the limiting groove 61 in the same group away from the mating cavity 63 in the same group. The two ends of the through groove 62 are respectively connected to the limiting groove 61 and the second side 14. Along the direction perpendicular to the first side 13, the width of the limiting groove 61 is greater than the width of the mating cavity 63.

[0036] After the terminal 2 and the insulating base 1 are assembled, the end of the welding part 3 away from the limiting part 4 extends out of the through groove 62 to the outside of the side 14, and the length of the welding part 3 extending out of the through groove 62 is less than 1 / 2 of its length inside the through groove 62; along the direction perpendicular to the bottom surface 12, the thickness of the welding part 3 is less than the depth of the through groove 62, which facilitates the welding part 3 to be welded to the pad.

[0037] The limiting part 4 has two notches 41 on the side away from the elastic part 5. The connection position between the welding part 3 and the limiting part 4 is located between the two notches 41. An upper spring piece 42 that is integrally formed in the notch 41 and protrudes away from the through groove 62 is provided on the groove wall of the limiting groove 61 away from the through groove 62. A positioning groove 611 for the upper spring piece 42 to be inserted is provided on the groove wall of the limiting groove 61 away from the through groove 62. The upper spring piece 42 and the positioning groove 611 form a limit, which can effectively prevent the limiting part 4 from becoming loose from the limiting groove 61 during the transportation and welding process of the connector. The positioning groove 611 is set at the connection between the limiting groove 61 and the mating cavity 63, and the positioning groove 611 is connected to the mating cavity 63, which can simplify the injection mold design of the insulating base 1 and reduce the processing difficulty.

[0038] The cross section of the positioning groove 611 along the direction perpendicular to the side surface 14 is a right triangle, and the right angle of the right triangle is located at the opening of the positioning groove 611. When the upper spring piece 42 is inserted into the positioning groove 611, the upper spring piece 42 abuts against the groove wall of the positioning groove 611, and there is a clearance between the groove wall of the positioning groove 611 near the bottom surface 12 and the upper spring piece 42 to facilitate the insertion of the upper spring piece 42 into the positioning groove 611, thereby reducing the assembly difficulty and improving the assembly yield. Along the direction perpendicular to side 13, the minimum distance between the two notches 41 on the same terminal 2 is greater than the width of the corresponding through groove 62, ensuring the structural strength of the connection position between the welding part 3 and the limiting part 4; the minimum distance between the two upper spring pieces 42 on the same terminal 2 is less than the minimum distance between the two corresponding positioning grooves 611; along the direction perpendicular to side 13, when the upper spring piece 42 is located in the positioning groove 611, the width of the upper spring piece 42 in the positioning groove 611 (Figure a) is greater than the width of the upper spring piece 42 in the mating cavity 63 (Figure b).

[0039] When terminal 2 and insulating base 1 are correctly assembled, part of the upper spring tab 42 is located within the mating cavity 63. If the limiting part 4 is not fully inserted into the limiting groove 61, the upper spring tab 42 abuts against the groove wall of the limiting groove 61 away from the through groove 62 and will not extend into the mating cavity 63. Therefore, by means of laser ranging or other methods, the presence of the upper spring tab 42 structure within the mating cavity 63 can be detected, which can quickly determine whether terminal 2 is properly assembled, improve detection efficiency, and prevent defective products from being shipped out.

[0040] If laser ranging is used for inspection, the assembled connector is first moved to the inspection station and fixed by manual means or by a conveyor structure connected to the previous process. At this time, the bottom surface 12 faces the laser rangefinder, and the cavity opening of the mating cavity 63 is directly opposite the emitting end of the laser rangefinder. Then, the laser rangefinder measures the distance to the preset inspection position in the mating cavity 63 and confirms whether the measured distance value is within the preset acceptable error range, thereby quickly determining whether the terminal 2 and the insulating base 1 are correctly assembled. In addition, according to the production line requirements, a rejection mechanism can be set up in the inspection device to automatically reject connectors that are judged to be unqualified through a push plate or other structure; an error reporting mechanism can also be set up to manually remove unqualified products. When the unqualified judgment is triggered a preset number of times, a shutdown alarm is automatically triggered to avoid the generation of batch defective products.

[0041] The limiting part 4 has two openings 43 on the side near the elastic part 5. The two openings 43 are respectively located on both sides of the connection position between the elastic part 5 and the limiting part 4. A lower spring piece 44 is integrally formed in the opening 43 and protrudes in a direction away from the mating cavity 63. The connection between the lower spring piece 44 and the opening 43 is located on the inner wall of the opening 43 away from the welding part 3. When the limiting part 4 is located in the limiting groove 61, the lower spring piece 44 abuts against the groove wall of the limiting groove 61 away from the mating cavity 63.

[0042] The upper spring 42 and the lower spring 44 work together to significantly reduce the positional offset of the limiting part 4 in the limiting groove 61 before and after the elastic part 5 is inserted and receives force, so that the actual deformation stroke of the elastic part 5 matches the design value, improving the stability of the connector insertion contact and the reliability of long-term use, and adapting to the installation requirements of automotive rearview cameras.

[0043] The mating cavity 63 includes a cavity 1 631 and a cavity 2 632 that are perpendicular to each other and interconnected. The limiting groove 61 is connected to the cavity 2 632. The cavity 1 631 and the cavity 2 632 form an L-shaped accommodating cavity and are both connected to the mating groove 15.

[0044] Each terminal 2 includes two symmetrically arranged elastic portions 5. The plane of symmetry of the two elastic portions 5 on the same terminal 2 bisects the limiting portion 4 and the welding portion 3, and the two notches 41 and two openings 43 on the same terminal 2 are symmetrically arranged along this plane of symmetry. Along the direction perpendicular to the side surface 13, the maximum distance (Figure c) between the two elastic portions 5 on the same terminal 2 remains consistent in the direction away from the limiting portion 4, and the minimum distance (Figure d) gradually increases in the direction away from the limiting portion 4. The symmetrical design of the double elastic portions 5 improves the stability and anti-interference capability of signal transmission; at the same time, the symmetrical structure ensures that the elastic portions 5 are subjected to uniform force during insertion; the outwardly expanding spacing design of the elastic portions 5 can improve the stability of the contact pressure with the mating terminal 2 and enhance the vibration resistance.

[0045] Along the direction perpendicular to side 13, the width of the solder joint 3 (Figure e) is between the maximum and minimum distance between the two elastic parts 5 of the same terminal 2. This ensures that when the terminal 2 is inserted and subjected to force, the force can be evenly transmitted to the solder joint 3, improving the connector's vibration resistance and mechanical reliability.

[0046] The elastic part 5 includes a first bending section 51, a first connecting section 52, a second bending section 53, a second connecting section 54, a third bending section 55, and a tail section 56 connected in sequence. The first bending section 51 is connected to the limiting part 4.

[0047] In this embodiment, the initial state of terminal 2 is when it is assembled to the insulating base 1 and the elastic part 5 is not subjected to external force by the mating connector. The state in which terminal 2 is assembled to the insulating base 1 and the elastic part 5 is fully inserted with the mating connector is the stressed state of terminal 2.

[0048] When terminal 2 is in its initial state, the bending angle of the first bending segment 51 (Figure f) is 180°, making the first connecting segment 52 approximately parallel to the limiting part 4; the bending angle of the second bending segment 53 (Figure h) is 210°, making the included angle between the first connecting segment 52 and the second connecting segment 54 approximately 30°; the bending angle of the third bending segment 55 (Figure j) is 250°, and the third bending segment 55 is used to abut against the mating connector; the length of the limiting part 4 along the direction perpendicular to the bottom surface 12 (Figure k) is greater than the length of the second connecting segment 54, and the length of the second connecting segment 54 is greater than twice the length of the first connecting segment 52; the bending radius of the second bending segment 53 is greater than the bending radius of the third bending segment 55, and the bending radius of the third bending segment 55 is greater than the bending radius of the first bending segment 51. The multi-segment bending structure design of the elastic part 5 can maximize the effective deformation of the elastic part 5 within a limited installation space, reduce the risk of stress relaxation after repeated insertion and connection, ensure stable contact with the mating connector, and avoid problems such as poor contact and signal interruption. Meanwhile, the two side walls of the tail section 56 are both convex curved surfaces, and the two side walls move closer to each other in the direction away from the bending section 55, which can prevent the tail section 56 from scratching other parts when it deforms; the bending section 51 includes a fishtail-shaped reinforcing end 511 connected to the limiting part 4. The reinforcing end 511 has concave curved surfaces facing and away from the side 13, which can improve the bending strength at the connection between the elastic part 5 and the limiting part 4.

[0049] When terminal 2 is in its initial state, both the first bent section 51 and the first connecting section 52 are simultaneously located within the first cavity 631 and the mating groove 15, the second bent section 53 is located within the second cavity 632, and the second connecting section 54, the third bent section 55, and the tail section 56 are all located within the mating groove 15. This ensures smooth insertion of the mating connector and guarantees that the third bent section 55 is completely located within the mating groove 15 in the initial state, ensuring effective contact when inserted with the mating connector.

[0050] When terminal 2 is in its initial state, the maximum distance from the bending segment 3 55 to the bottom surface 12 is equal to the distance from the inner wall of cavity 2 632 away from the bottom surface 12 to the bottom surface 12, and the minimum distance from the bending segment 3 55 to cavity 1 631 is greater than the distance from the cavity opening of cavity 1 631 facing away from the ground 12 to the bottom surface 12. This limits the relative position of the maximum deformation fulcrum of the elastic part 5 to the insulating base 1, ensuring that the deformation stroke of the elastic part 5 meets design expectations, avoiding elastic failure caused by overpressure deformation during insertion, and improving the performance stability of the connector after repeated insertion and removal.

[0051] When terminal 2 is under stress, the second bent section 53 is simultaneously located within both cavity 631 and cavity 632, with a gap between the second bent section 53 and the limiting part 4. The third bent section 55 is located within the mating groove 15, and the end of the tail section 56 away from the third bent section 55 is located within cavity 632. The distance from the tail section 56 to the bottom surface 12 is greater than the distance from the second bent section 53 to the bottom surface 12. This ensures that only the third bent section 55 forms effective contact with the mating connector, preventing interference between other sections of the elastic part 5 and the mating terminal 2 and the insulating base 1, while also preventing permanent deformation caused by excessive deformation of the elastic part 5.

[0052] This invention is not limited to the specific embodiments described above. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Any simple changes or modifications made to the design structure and concept of this invention fall within the protection scope of this invention.

Claims

1. A connector for a PCB of a car rearview camera, characterized in that: The device includes an insulating base and four terminals. The outer wall of the insulating base includes a top surface, a bottom surface, a first side surface, and a second side surface. The top and bottom surfaces are arranged opposite to each other. There are two first side surfaces and two second side surfaces, both arranged opposite to each other. The top surface has a mating groove, the opening of which extends to the first two side surfaces. The terminals are integrally formed from sheet metal and include a welded part, a limiting part, and an elastic part connected in sequence. The bottom surface has four sets of mounting groups corresponding to each terminal. Each mounting group includes a limiting groove for the limiting part to be inserted, a through groove for the welded part to be inserted, and a mating cavity for the elastic part to be inserted and communicating with the mating groove. The mating cavities of the four mounting groups are arranged in a 2×2 matrix on the bottom surface. Along the direction perpendicular to the second side surface, the limiting groove is located at the position of the mating cavity in the same group away from the other mating cavity. On one side, the through groove is located on the side of the same group of limiting grooves away from the same group of mating cavities. The two ends of the through groove are respectively connected to the limiting groove and the second side. Along the direction perpendicular to the first side, the width of the limiting groove is greater than the width of the mating cavity. The limiting part is provided with two notches on the side away from the elastic part. The connection position of the welding part and the limiting part is located between the two notches. An upper spring piece is integrally formed in the notch and protrudes away from the through groove. The groove wall of the limiting groove away from the through groove is provided with a positioning groove for the upper spring piece to be inserted. The cross section of the positioning groove along the direction perpendicular to the second side is a right triangle. The right angle of the right triangle is located at the opening of the positioning groove. When the upper spring piece is inserted into the positioning groove, the upper spring piece abuts against the groove wall of the positioning groove, and there is a clearance gap between the groove wall of the positioning groove near the bottom and the upper spring piece.

2. The connector for a car rearview camera PCB according to claim 1, characterized in that: The positioning groove is disposed at the connection between the limiting groove and the mating cavity, and the positioning groove is connected to the mating cavity; Along the direction perpendicular to the first side, the minimum distance between two notches on the same terminal is greater than or equal to the width of the corresponding through groove, and the minimum distance between two upper spring pieces on the same terminal is less than the minimum distance between the corresponding two positioning grooves; along the direction perpendicular to the first side, when the upper spring piece is located in the positioning groove, the width of the upper spring piece in the positioning groove is greater than the width of the upper spring piece in the mating cavity.

3. A connector for a car rearview camera PCB according to claim 2, characterized in that: The limiting part has two openings on the side near the elastic part, and the two openings are respectively located on both sides of the connection position between the elastic part and the limiting part; a lower spring piece is integrally formed in the opening and protrudes away from the mating cavity, and the connection between the lower spring piece and the opening is located on the inner wall of the opening away from the welding part; when the limiting part is located in the limiting groove, the lower spring piece abuts against the groove wall of the limiting groove away from the mating cavity.

4. A connector for a car rearview camera PCB according to claim 3, characterized in that: The mating cavity includes a cavity one and a cavity two that are perpendicular to and interconnected with each other. The limiting groove is connected to the cavity two. The elastic part includes a bending section one, a connecting section one, a bending section two, a connecting section two, a bending section three, and a tail section connected in sequence. The bending section one is connected to the limiting part. When the terminal is in the initial state, the bending angle of the bending section one is 179°~181°, the bending angle of the bending section two is 209°~211°, and the bending angle of the bending section three is 249°~251°. The limiting groove... The length of the first section perpendicular to the bottom surface is greater than the length of the second connecting section, and the length of the second connecting section is greater than twice the length of the first connecting section; the bending radius of the second bending section is greater than the bending radius of the third bending section, and the bending radius of the third bending section is greater than the bending radius of the first bending section; the two opposite side walls of the tail section are both outwardly convex curved surfaces, and the two side walls approach each other in the direction away from the third bending section; the first bending section includes a fishtail-shaped reinforcing end connected to the limiting part, and the surface of the reinforcing end facing and away from the first side is both an inwardly concave curved surface.

5. A connector for a car rearview camera PCB according to claim 4, characterized in that: When the terminal is in its initial state, both the first bending section and the first connecting section are located in the first cavity and the mating groove, the second bending section is located in the second cavity, and the second connecting section, the third bending section, and the tail section are all located in the mating groove.

6. A connector for a car rearview camera PCB according to claim 5, characterized in that: When the terminal is in its initial state, the maximum distance from the third bent section to the bottom surface is equal to the distance from the inner wall of the second cavity away from the bottom surface to the bottom surface, and the minimum distance from the third bent section to the first cavity is greater than the distance from the opening of the first cavity facing away from the ground to the bottom surface.

7. A connector for a car rearview camera PCB according to claim 6, characterized in that: When the terminal is under stress, the second bending section is located in both cavity one and cavity two, and there is a gap between the second bending section and the limiting part. The third bending section is located in the mating groove, and the end of the tail section away from the third bending section is located in cavity two. The distance from the tail section to the bottom surface is greater than the distance from the second bending section to the bottom surface.

8. A connector for a car rearview camera PCB according to claim 3 or 7, characterized in that: Each terminal includes two symmetrically arranged elastic portions. The symmetrical plane of the two elastic portions on the same terminal bisects the limiting portion and the welding portion. The two notches and two openings on the same terminal are symmetrically arranged along the symmetrical plane. Along the direction perpendicular to the side surface, the maximum distance between the two elastic portions on the same terminal remains consistent in the direction away from the limiting portion, and the minimum distance gradually increases in the direction away from the limiting portion.

9. A connector for a car rearview camera PCB according to claim 8, characterized in that: Along a direction perpendicular to side one, the width of the welded portion is between the maximum and minimum distance between the two elastic portions of the same terminal.

10. A connector for a PCB of a car rearview camera according to claim 9, characterized in that: The vertical distance from the bottom to the top surface of the mating groove is greater than or equal to twice the vertical distance from the bottom to the bottom surface of the mating groove.

Images