Pluggable wiring electric connector

Abstract

The invention relates to the technical field of connectors, and discloses a plug type wiring electric connector which comprises a plastic shell, a terminal assembly installed in the plastic shell and a button installed on the plastic shell, the terminal assembly comprises a metal terminal and an elastic piece, the metal terminal is provided with a first assembly structure, and the elastic piece is provided with a second assembly structure. The elastic sheet is provided with a second assembling structure, and the metal terminal and the elastic sheet are connected together through the first assembling structure and the second assembling structure. The first assembly structure is arranged on the metal terminal, and the second assembly structure is arranged on the elastic sheet, so that the elastic sheet is locked in all directions after being installed on the metal terminal, and the connection firmness and stability between the metal terminal and the elastic sheet are improved while simple and convenient installation is ensured; the metal terminals and the elastic sheets can be prevented from being firmly connected and matched in the installation stage and the use stage after the metal terminals and the elastic sheets are installed in the plastic shell, the overall stability of the connector is guaranteed, the service life is prolonged, and the assembly difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric connectors, and in particular to a plug-in wiring electric connector. Background Art

[0002] Plug-in wiring electrical connector is an electronic component used to achieve electrical connection. It is used in various electrical equipment to facilitate wiring. Its function is to serve as a bridge between blocked circuits or independent circuits, and to take on the task of current or signal transmission; or it can be matched with electrical terminals to form a board-to-line connection; it can also be used independently for board-to-board connection. Plug-in wiring electrical connectors are widely used in various fields, such as automobiles, electric vehicles and other motor vehicle fields, and various electronic equipment fields, etc., to connect various electrical components.

[0003] As a key component in the connector system, the plug-in wiring electrical connector cooperates with the docking electrical connector through plug-in and pull-out actions to achieve convenient connection and disconnection of the circuit. Traditional plug-in wiring electrical connectors are usually composed of a plastic shell, terminals built into the plastic shell, and springs. These components work together: the springs and terminals fit tightly together to firmly clamp the conductive elements (such as cables) inserted into the plastic shell, thereby ensuring reliable transmission of electrical signals between the conductive elements and the terminals.

[0004] The existing connection between the spring sheet and the terminal is that the spring sheet is hung on one end of the terminal for wiring, and a simple limit between the spring sheet and the terminal is achieved by pressing the end against the terminal. Especially before and during the assembly of the assembled spring sheet and terminal in the plastic housing, the spring sheet is easily separated from the terminal once it is touched or squeezed to a certain extent, which increases the difficulty of assembling the terminal and affects the assembly efficiency. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a plug-in type wiring electrical connector to solve the problem of unstable connection between the spring piece and the terminal.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a plug-in wiring electrical connector including a plastic shell, a terminal assembly installed in the plastic shell, and a button installed on the plastic shell and used to squeeze the terminal assembly by pressing, the terminal assembly including a metal terminal and a spring, the metal terminal is provided with a first assembly structure, the spring is provided with a second assembly structure, the metal terminal and the spring are connected together through the first assembly structure and the second assembly structure and lock the metal terminal and the spring to move in all directions, thereby preventing the terminal assembly from being separated when assembled or installed in the plastic shell, and ensuring the stability of the terminal assembly.

[0007] Furthermore, the metal terminal includes a tight-fitting section, an assembly section connected to one end of the tight-fitting section, and a docking section connected to the other end of the tight-fitting section. The first assembly structure is formed on the assembly section, and the spring sheet cooperates with the first assembly structure via the second assembly structure to be connected to the assembly section.

[0008] Furthermore, the assembly section includes a first arm section extending toward the first side after being bent from the tight-fitting section, a second arm section extending from the first arm section along a plug-in direction toward the second side away from the tight-fitting section, and a third arm section extending from the second arm section toward the third side, and the end of the first arm section away from the tight-fitting section is inclined toward the second side; the spring sheet includes a first elastic section arranged parallel to the first arm section, an arc section that bends toward the second side from one end of the first elastic section and continues to bend toward the first side, and a second elastic section that extends toward the second side after being bent from the arc section, and the end of the second elastic section away from the arc section is inclined toward the first side; the second assembly structure includes a first connecting section that extends toward the second side along the plug-in direction after being bent from the other end of the first elastic section, a second connecting section that extends toward the third side after being bent from the first connecting section, and a A through hole on the connecting section, the through hole is opened to the second connecting section at one end away from the first elastic section, the first arm section is attached to the outer wall of the first elastic section, the second arm section is attached to the outer wall of the first connecting section, and the third arm section passes through the through hole and fits the inner wall of the second connecting section; the first assembly structure includes a convex bulge protruding inwardly on the inner wall of the second arm section, an intermediate connecting section convexly bent from the middle of the third arm section toward the fourth side, and a plurality of grooves formed on the inner wall of the intermediate connecting section, the intermediate connecting section is spaced from the second connecting section and the third arm sections at both ends of the intermediate connecting section are both fitted to the third arm section, and the plurality of grooves are spaced apart along the length direction of the intermediate connecting section, the second elastic section is pressed against any one of the grooves, the convex bulge extends into the through hole and is located on the side of the through hole facing the first elastic section.

[0009] Furthermore, a plug-in cavity is formed on the plastic shell, and the plug-in cavity includes a tight-fitting cavity section, an assembly cavity section located on one side of the tight-fitting cavity section and connected thereto, and a docking cavity section located on the other side of the tight-fitting cavity section and connected thereto, the tight-fitting section is tightly pressed against the tight-fitting cavity section, the assembly section and the spring sheet are installed in the assembly cavity section, and the docking section extends into the docking cavity section; the side of the plastic shell facing the second side is a first surface, a first socket is provided on the first surface at a position corresponding to the second elastic section, the button is inserted in the first socket and abuts against the second elastic section; the side of the plastic shell facing the fourth side is a second surface, a second socket is provided on the second surface at a position corresponding to the docking cavity section.

[0010] Furthermore, the second elastic section is symmetrically provided with crimping ears on both side edges that abut against one end of the groove, and the button includes a main body and holding arms that are parallel to and spaced apart from one side of the main body, and the two holding arms are respectively pressed against the two crimping ears, and the third arm section and the second connecting section are both movably inserted between the two holding arms.

[0011] Furthermore, the plastic shell includes a first shell and a second shell, and the docking cavity section and the tight-fitting cavity section are both formed on the first shell; a first cavity connected to the tight-fitting cavity section is formed on the surface of the first shell facing the second side, a locking section is protruding from one side of one of the cavity arms of the first cavity away from the tight-fitting cavity section, a first locking structure is formed on at least one other cavity wall of the first cavity, and the side of the first shell facing the fourth side is the second surface; a second cavity is formed on the second shell that passes through the fourth side, a locking groove matching the locking section is provided on one side cavity wall of the second cavity corresponding to the locking section, a second locking structure is formed on at least one other cavity wall of the second cavity, and the second socket is formed on the first shell; the first shell and the second shell are connected together by the first locking structure and the second locking structure, and the locking section is inserted into the locking groove, and the first cavity and the second cavity are connected to form the assembly cavity section.

[0012] Furthermore, the two pressing arms of the button extend on one end away from the main body to form a limiting portion, and a pressing groove is formed on the side of the limiting portion away from the main body. The two pressing ears are tightly pressed in the pressing groove, and the limiting portion is against the second side cavity wall of the second cavity.

[0013] Furthermore, a first support plate for supporting the curved arc section and a second support plate for supporting the first arm section are respectively formed on the cavity wall of the first cavity body facing the fourth side and outside the two sides of the tight-fitting cavity section.

[0014] Furthermore, a wire insertion port is formed on a first side wall of the second cavity toward the third side, and the port passes through the second shell along the length direction of the middle connecting section. The port is located opposite to the second elastic section and close to one end of the middle connecting section. A limiting secondary cavity is formed on the first side wall for the curved section to extend into. The limiting secondary cavity is located outside the fourth side of the port and is used to limit the movement of the curved section toward the first side of the second cavity.

[0015] Furthermore, a positioning portion is formed in the docking cavity section for limiting the movement of the docking section toward the first side and the third side.

[0016] The plug-in wiring electrical connector of the present invention has at least the following beneficial effects: by arranging a first assembly structure on the metal terminal and a second assembly structure on the spring sheet so that the spring sheet is fully locked after being installed on the metal terminal, while ensuring simple installation, the connection firmness and stability between the metal terminal and the spring sheet are improved, and the metal terminal and the spring sheet are prevented from being connected and matched relatively firmly during the installation stage and the use stage after being installed in the plastic housing, thereby ensuring the overall stability of the connector, improving the service life, and reducing the difficulty of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of the wiring electrical connector of the present invention;

[0019] Figure 2 is a side cross-sectional view of the wiring electrical connector of the present invention;

[0020] Figure 3 An exploded view of the wiring electrical connector of the present invention;

[0021] Figure 4 is a schematic structural diagram of the first shell of the present invention;

[0022] Figure 5 is a schematic structural diagram of the second shell of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the terminal assembly of the present invention;

[0024] Figure 7 An exploded view of the terminal assembly of the present invention;

[0025] Figure 8 This is an exploded view of the terminal assembly of the present invention from another angle.

[0026] The meanings of the symbols in the accompanying drawings are:

[0027] Plastic shell 1, plug-in cavity 11, tight-fitting cavity section 111, assembly cavity section 112, docking cavity section 113, first side wall 114, limiting secondary cavity 115, second side wall 116, first surface 121, second surface 122, first socket 131, second socket 132, test hole 133, first shell 14, plug-in part 14a, assembly part 14b, first cavity 141, clamping section 142, second shell 15, second cavity 151, clamping groove 152, first clamping structure 16, first clamping groove 161, first clamping member 162, first clamping 1621, second clamping structure 17, second clamping groove 171, second clamping member 172, second clamping 1721, dividing groove 18, wire insertion port 191, connecting block 192, threaded hole 193, screw 194, first support plate 195, first support surface 19 51. The second supporting plate 196. The second supporting surface 1961. The positioning column 197. The terminal assembly 2. The metal terminal 21. The tight fitting section 211. The first side plate 2111. The second side plate 2112. The third side plate 2113. The assembly section 212. The first arm section 2121. The second arm section 2122. The third arm section 2123. The docking section 213. The elastic arm 2131. The abutting point 2132. The spring piece 22. The first elastic section 221. The curved section 222. The second elastic section 223. The crimping ear 224. The first assembly structure 23. The convex hump 231. The middle connecting section 232. The groove 233. The second assembly structure 24. The first connecting section 241. The second connecting section 242. The through hole 243. The button 3. The main body 31. The pressing arm 32. The second activity space 321. The limiting portion 322. The pressing groove 323. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Reference Figures 1 to 8 The plug-in wiring electrical connector of the present invention comprises a plastic housing 1, a terminal assembly 2 installed in the plastic housing 1, and a button 3 installed on the plastic housing 1 and used to squeeze the terminal assembly 2 by pressing. The plastic housing 1 insulates and supports the terminal assembly 2. The terminal assembly 2 is used to be electrically connected to the cable and the docking terminal to realize the transmission of electrical signals. The button 3 is used to squeeze the terminal assembly 2 so that the terminal assembly 2 can be used to clamp or loosen the cable, thereby controlling the connection of the cable.

[0030] Reference Figures 2 to 5In the embodiment shown, the plastic shell 1 is made of plastic and has a geometric structure as a whole, which can be a cubic structure or a cylindrical structure. In the content defined in this embodiment, the plastic shell 1 is a cubic structure. In order to facilitate the understanding of this structure, the present invention takes the plastic shell 1 as a reference, defines the two sides of the plastic shell 1 in the width direction as the first side and the third side, and defines the two sides of the plastic shell 1 in the height direction as the second side and the fourth side, respectively. Figure 2 For example, the first side is the right side, the second side is the top side, the third side is the left side, and the fourth side is the downward side. The first side, the second side, the third side and the fourth side only refer to the directions with the center of the plastic shell 1 as the point, and are not individually represented as a certain physical object.

[0031] In this embodiment, a plug-in cavity 11 is formed in the plastic housing 1. The plug-in cavity 11 is arranged corresponding to the terminal assembly 2. The terminal assembly 2 can be arranged as one, and the plug-in cavity 11 is also arranged as one. The terminal assembly 2 can be arranged as at least two, and the plug-in cavity 11 is also arranged as at least two. The plug-in cavities 11 are evenly spaced along the length direction of the plastic housing 1 to facilitate the installation of the terminal assemblies 2. It should be noted that the terminal assembly 2 and the plug-in cavity 11 must correspond to each other.

[0032] In the content defined in this embodiment, the plug-in cavity 11 includes a tight-fitting cavity section 111, an assembly cavity section 112 located on one side of the tight-fitting cavity section 111 and connected to the tight-fitting cavity section 111, and a docking cavity section 113 located on the other side of the tight-fitting cavity section 111 and connected to the tight-fitting cavity section 111. The tight-fitting cavity section 111 facilitates the terminal assembly 2 to fit tightly therein and cooperates with the terminal assembly 2 to achieve the position limitation of the terminal assembly 2. The docking cavity section 113 facilitates the terminal assembly 2 to cooperate with the docking connector and is used for plugging with the docking connector. The assembly cavity section 112 facilitates the terminal assembly 2 and the button 3 to cooperate for wiring. In this embodiment, the side of the plastic shell 1 facing the second side is defined as the first surface 121, and the side of the plastic shell 1 facing the fourth side is defined as the second surface 122, that is, the first surface 121 and the second surface 122 are arranged on opposite sides along the height of the plastic shell 1, and the first surface 121 and the second surface 122 both refer to the outer side of the plastic shell 1. A first socket 131 is provided on the first surface 121 at a position corresponding to the insertion cavity 11 along the height direction. The number of the first sockets 131 corresponds to the insertion cavity 11 and is consistent with the number of the insertion cavity 11. Each insertion cavity 11 corresponds to a first socket 131, and the first socket 131 is connected to the insertion cavity 11, and the button 3 is inserted into the first socket 131. A second socket 132 is provided on the second surface 122 at a position corresponding to the insertion cavity 11 along the height direction. The number of the second sockets 132 corresponds to the insertion cavity 11 and is consistent with the number of the insertion cavity 11. Therefore, each insertion cavity 11 corresponds to a second socket 132, and the second socket 132 is connected to the insertion cavity 11. It should be noted that the second socket 132 is used for the docking terminal of the docking connector to pass through the insertion cavity 11 and cooperate with the terminal assembly 2.

[0033] In the content defined in this embodiment, in order to facilitate the installation of the terminal assembly 2 and the button 3, the plastic housing 1 includes a first housing 14 and a second housing 15, respectively, wherein the docking cavity section 113 and the tight-fitting cavity section 111 are both formed on the first housing 14, and the assembly cavity section 112 is formed by the first housing 14 and the second housing 15. In this embodiment, the first housing 14 and the second housing 15 are arranged along the height direction of the plastic housing 1, and the first housing 14 is relatively distributed on the side facing the fourth side, and the second housing 15 is located outside the second side of the first housing 14 relative to the first housing 14. Among them, the docking cavity section 113 is located on the side of the tight-fitting cavity section 111 facing the fourth side relative to the tight-fitting cavity section 111. For this reason, the side of the first housing 14 facing the fourth side (i.e., the side of the first housing 14 away from the second housing 15) is the second surface 122, and the side of the second housing 15 facing the second side (i.e., the side of the second housing 15 away from the first housing 14) is the first surface 121. The first shell 14 and the second shell 15 are detachably connected, for example, they can be threadedly connected by respectively opening threaded holes 193 on the first shell 14 and the second shell 15. For another example, the first shell 14 and the second shell 15 can be snap-connected, for example, a first snap-connection structure 16 can be provided on the side of the first shell 14 facing the second shell 15, and a second snap-connection structure 17 can be provided on the side of the second shell 15 facing the first shell 14, and the first shell 14 and the second shell 15 can be connected together or separated by the first snap-connection structure 16 and the second snap-connection structure 17.

[0034] A first cavity 141 connected to the tight-fitting cavity section 111 is formed in a concave manner on the surface of the first shell 14 facing the second side (i.e., the side surface of the first shell 14 facing the first shell 14). For this purpose, the first cavity 141 is open toward the second side. The first cavity 141, the tight-fitting cavity section 111 and the docking cavity section 113 are sequentially distributed along the height direction. The second socket 132 is formed on the first shell 14. A clamping section 142 is convexly provided on one of the cavity arms of the first cavity 141 and on one side of the cavity wall away from the tight-fitting cavity section 111. The clamping section 142 is convexly provided toward the second side and has a sheet-like structure. The clamping section 142 can be square or wedge-shaped. The first buckle structure 16 is formed on at least one other cavity wall of the first cavity 141. In order to facilitate the use in multiple plug-in cavities 11, the clamping section 142 is arranged on one side of the cavity wall of the first cavity 141 along the length direction of the plastic shell 1, and the first clamping structure 16 is formed on at least one side of the cavity wall of the first cavity 141 along the width direction of the plastic shell 1 (hereinafter referred to as "width direction"). Preferably, the first clamping structure 16 is arranged on both sides of the first cavity 141 along the width direction. The first clamping structure 16 includes a first clamping groove 161 and a first clamping member 162, and the first clamping groove 161 and the first clamping member 162 are arranged on the cavity walls of the two sides of the first cavity 141 along the width direction, and the first clamping groove 161 passes through the cavity wall of the first cavity 141 along the width direction. The first engaging member 162 is formed by dividing the cavity wall of the first cavity 141, wherein the first engaging member 162 faces the first slot 161 along the width direction, and a dividing groove 18 is formed on both sides of the first engaging member 162 along the length direction of the plastic shell 1 (hereinafter referred to as the "length direction"), which is through the width direction, and the dividing groove 18 is through the second side along the height direction, so that the first engaging member 162 is separated from the other side walls of the first cavity 141. A first buckle 1621 is convexly provided on a side surface of the first engaging member 162 away from the first slot 161, and the first buckle 1621 is a wedge-shaped structure and has a guiding inclined surface. It should be noted that the second socket 132 is formed on the second surface 122 of the first shell 14, and the number of the second sockets 132 corresponds to the number of the plug-in cavity 11, and each second socket 132 is connected to the docking cavity section 113 along the height direction.

[0035] In the content shown in this embodiment, the first shell 14 has a plug-in portion 14a and an assembly portion 14b, the plug-in portion 14a is narrower than the assembly portion 14b, the docking cavity section 113 and the tight-fitting cavity section 111 are both formed in the plug-in portion 14a, the second surface 122 is located on the plug-in portion 14a, the assembly portion 14b is wider than the plug-in portion 14a and is located on the second side of the plug-in portion 14a, and the first cavity 141 and the first buckle structure 16 are both formed on the assembly portion 14b. The plug-in portion 14a is used to be inserted into the corresponding groove structure of the docking connector when mating with the docking connector, and the assembly portion 14b limits the insertion depth of the plug-in portion 14a, and the width of the second shell 15 is adapted to the width of the assembly portion 14b.

[0036] A second cavity 151 is formed on the second shell 15 and passes through the second shell 15 toward the first side. The position and number of the second cavity 151 are consistent with the first cavity 141 to correspond. A clamping groove 152 adapted to the clamping section 142 is provided on a cavity wall of the second cavity 151 on one side thereof, that is, the clamping groove 152 is formed on one of the cavity walls of the second cavity 151 in the length direction. The shape of the clamping groove 152 is adapted to the shape of the clamping section 142. The clamping groove 152 passes through the fourth side in the height direction. The clamping groove 152 is open toward one side of the second cavity 151 in the length direction. The first socket 131 is formed on the first surface 121 of the second shell 15, and the first socket 131 is connected to the second cavity 151 in the height direction toward the fourth side. When the first shell 14 and the second shell 15 are installed, the clamping section 142 is opposite to the clamping groove 152 and is gradually inserted into the clamping groove 152 during the installation process, thereby ensuring the rapid alignment and positioning between the first shell 14 and the second shell 15 during installation, so as to facilitate installation. A second clamping structure 17 is formed on at least one other cavity wall of the second cavity 151. The second clamping structure 17 is larger than the first clamping structure 16. For this reason, the second clamping structure 17 is arranged on the cavity wall of the second cavity 151 along the width direction. Among them, the second clamping structure 17 includes a second clamping groove 171 and a second clamping member 172. The second clamping groove 171 and the second clamping member 172 are arranged on the cavity walls on both sides of the second cavity 151 along the width direction, and the second clamping groove 171 passes through the cavity wall of the second cavity 151 along the width direction. The second engaging member 172 is formed by dividing the cavity wall of the second cavity 151, wherein the second engaging member 172 faces the second card slot 171 in the width direction, and a dividing groove 18 is also formed on both sides of the second engaging member 172 in the length direction, which penetrates in the width direction, and the dividing groove 18 penetrates toward the second side in the height direction, so that the second engaging member 172 is separated from the other side cavity walls of the second cavity 151. A second buckle 1721 is convexly provided on one side surface of the second engaging member 172 away from the second card slot 171, and the second buckle 1721 is a wedge-shaped structure and has a guiding inclined surface. Among them, in the height direction, the second engaging member 172 faces the first card slot 161, and the second card slot 171 faces the first engaging member 162. In the content defined in this embodiment, a wire insertion port 191 penetrating the second shell 15 is formed on one side cavity wall of the second cavity 151, and the cable passes through the wire insertion port 191 into the second cavity 151 and is connected to the terminal assembly 2. Connecting blocks 192 are integrally connected to both side outer walls of the second shell 15 along the length direction. Threaded holes 193 are opened on the connecting blocks 192 along the height direction. Screws 194 are screwed in the threaded holes 193 to facilitate further connection with the docking connector through the screws 194 to improve the firmness.

[0037] During assembly, the first shell 14 is moved toward the side of the second shell 15 along the height direction, and continues to move after the locking section 142 is aligned with the locking groove 152. The first locking member 162 and the second locking member 172 extend into the second cavity 151 during the movement, and the first clip 1621 and the second clip 1721 are respectively squeezed by the cavity wall until the second shell 15 stops on the assembly part 14b. At this time, the locking section 142 extends into the locking groove 152, the first clip 1621 on the first locking member 162 is snapped into the second clip groove 171, and the second clip 1721 on the second locking member 172 is snapped into the first clip groove 161, so that the connection between the first shell 14 and the second shell 15 is realized, and the first cavity 141 and the second cavity 151 are combined to form the assembly cavity section 112 after the assembly is completed. It should be noted that the first sockets 131 are formed on the first surface 121 of the second shell 15 , and the number of the first sockets 131 corresponds to the number of the plug-in cavities 11 , and each first socket 131 is connected to the assembly cavity section 112 along the height direction.

[0038] Reference Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 In this embodiment, the terminal assembly 2 includes a metal terminal 21 and a spring 22, and the metal terminal 21 and the spring 22 are both made of conductive metal materials, such as copper. Among them, the metal terminal 21 is provided with a first assembly structure 23, and the spring 22 is provided with a second assembly structure 24. The metal terminal 21 and the spring 22 are connected together by the first assembly structure 23 and the second assembly structure 24, and the metal terminal 21 and the spring 22 are locked in all directions to move, thereby improving the connection firmness between the metal terminal 21 and the spring 22, and preventing the terminal assembly 2 from being easily loosened during the installation process or use process.

[0039] The metal terminal 21 includes a tight-fitting section 211, an assembly section 212 connected to one end of the tight-fitting section 211, and a docking section 213 connected to the other end of the tight-fitting section 211. The assembly section 212, the tight-fitting section 211, and the docking section 213 are sequentially distributed along the height direction. The assembly section 212 is located on the second side of the tight-fitting section 211, and the docking section 213 is located on the fourth side of the tight-fitting section 211. The first assembly structure 23 is formed on the assembly section 212, and the spring sheet 22 cooperates with the first assembly structure 23 through the second assembly structure 24 to be connected to the assembly section 212. Among them, the tight-fitting section 211 is tightly pressed against the tight-fitting cavity section 111, the assembly section 212 and the spring sheet 22 are both installed in the assembly cavity section 112, the docking section 213 extends into the docking cavity section 113, the button 3 is pressed against the spring sheet 22 along the height direction, and the docking section 213 corresponds to the second socket 132 and is used to cooperate with the docking connector to achieve plug-in.

[0040] In this embodiment, the tight-fitting section 211 includes a first side plate 2111, a second side plate 2112 and a third side plate 2113, and the second side plate 2112 and the third side plate 2113 are respectively connected to the two side edges of the first side plate 2111 along the width direction to form a U-shape as a whole. The tight-fitting cavity section 111 is a square cavity structure. When assembled, the second side plate 2112 and the third side plate 2113 are respectively pressed against the two side walls of the tight-fitting cavity section 111, and the first side plate 2111 can contact the inner wall of the tight-fitting cavity section 111, so as to achieve the matching between the tight-fitting section 211 and the tight-fitting cavity section 111.

[0041] In this embodiment, the assembly section 212 includes a first arm section 2121 extending toward the first side after being bent from the second side plate 2112 of the tight fitting section 211, a second arm section 2122 extending toward the second side along a plug-in direction from one end of the first arm section 2121 away from the tight fitting section 211, and a third arm section 2123 extending toward the third side from one end of the second arm section 2122 away from the first arm section 2121, and the end of the first arm section 2121 away from the tight fitting section 211 is inclined toward the second side, so that the overall shape of the assembly section 212 is similar to a U shape, and the entire assembly section 212 is used to be installed in the assembly cavity section 112, and the U-shaped structure is convenient for the spring sheet 22 to be sleeved therein and increase the contact area. Among them, the connection between the second side plate 2112 and the first arm section 2121, the connection between the first arm section 2121 and the second arm section 2122, and the connection between the second arm section 2122 and the third arm section 2123 are all bending points. In the illustrated embodiment, the first assembly structure 23 includes a convex hump 231 convexly disposed inwardly on the inner side wall of the second arm segment 2122, an intermediate connecting segment 232 convexly disposed from the middle of the third arm segment 2123 toward the fourth side by bending, and a plurality of grooves 233 formed on the inner side wall of the intermediate connecting segment 232, wherein the convex hump 231 is on the inner side toward the third side relative to the second arm segment 2122 and on the outer side toward the first side; the length direction of each groove 233 is arranged along the length direction of the plastic housing 1, and the plurality of grooves 233 are arranged at intervals along the length direction of the intermediate connecting segment 232, and the length direction of the intermediate connecting segment 232 is the width direction of the plastic housing 1.

[0042] In this embodiment, the spring piece 22 includes a first elastic section 221 arranged parallel to the first arm section 2121, a curved section 222 which is curved toward the second side and then continues to be curved toward the first side from one end of the first elastic section 221 toward the third side, and a second elastic section 223 which is bent toward the second side after being bent from one end of the curved section 222 away from the first elastic section 221, and the end of the second elastic section 223 away from the curved section 222 is inclined toward the first side. On one end of the second elastic section 223 away from the curved section 222 and on both sides thereof along the length direction, there are symmetrically protruding crimping ears 224, which facilitate the button 3 to squeeze the spring piece 22.

[0043] During assembly, the first elastic section 221 is attached to the inner wall of the first arm section 2121, that is, the first elastic section 221 is attached to the side surface of the first arm section 2121 facing the second side, the first arm section 2121 supports the first elastic section 221, the curved section 222 facilitates the second elastic section 223 to change its position after being pressed, and the end of the second elastic section 223 away from the curved section 222 is pressed against any groove 233, and the groove 233 is used to limit the movement of the second elastic section 223 in the width direction to a certain extent, and through the cooperation between the middle connecting section 232 and the first arm section 2121, the movement of the spring sheet 22 in the height direction is limited, that is, the movement of the spring sheet 22 toward the second side and the fourth side is limited. Among them, one end of the first elastic section 221 facing the third side extends relative to the tight fitting section 211 to the outside of the tight fitting section 211 facing the third side, so that the curved section 222 is located outside the range surrounded by the assembly section 212.

[0044] In this embodiment, the second assembly structure 24 includes a first connection section 241 that is bent from the other end of the first elastic section 221 (i.e., the end of the first elastic section 221 facing the first side) and extends toward the second side along the plugging direction, a second connection section 242 that is bent from the end of the first connection section 241 away from the first elastic section 221 and extends toward the third side, and a through hole 243 opened on the first connection section 241, the through hole 243 is opened from the end away from the first elastic section 221 to the second connection section 242, so that the through hole 243 passes through the first connection section 241 along the width direction. Among them, the width of the third arm section 2123 is smaller than the width of the through hole 243 so that the third arm section 2123 can pass through the through hole 243.

[0045] During assembly, the first arm segment 2121 is attached to the outer wall of the first elastic segment 221, the second arm segment 2122 is attached to the outer wall of the first connecting segment 241, and the third arm segment 2123 passes through the hole 243 along the width direction and is attached to the inner wall of the second connecting segment 242, that is, the first arm segment 2121 is attached to the side surface of the first elastic segment 221 facing the first side, and the third arm segment 2123 is attached to the side surface of the second connecting segment 242 facing the second side, so that the first connecting segment 241, the first elastic segment 221, etc. are all located on the inner side of the assembly segment 212, and the second connecting segment 242 is located on the outer side of the third arm segment 2123. After the assembly is completed, due to the elastic characteristics of the metal terminal 21 and the spring 22 themselves, the second elastic section 223 presses against any groove 233 and presses against the middle connecting section 232. Under the compression of the second elastic section 223 and the elastic characteristics of the third arm section 2123 itself, the third arm section 2123 presses against the second connecting section 242, and the first elastic section 221 presses against the first arm section 2121, that is, the middle connecting section 232 is separated from the second connecting section 242, and the third arm sections 2123 at both ends of the middle connecting section 232 are both attached to the third arm section 2123, and the convex bump 231 extends into the through hole 243 and is located on the side of the through hole 243 facing the first elastic section 221. In this way, the cooperation between the through hole 243 and the third arm segment 2123 limits the freedom of the spring 22 and the metal terminal 21 in the length direction (the length direction of the plastic housing 1), and the convex bump 231 restricts the end of the second arm segment 2122 away from the third arm segment 2123 and prevents it from deflecting and shaking in the length direction, thereby improving the stability of the second arm segment 2122 between the first connecting section 241. The convex bulge 231 and the through hole 243 cooperate to make the convex bulge 231 abut against the side edge of the through hole 243 toward the fourth side, thereby limiting the movement of the spring piece 22 toward the second side and limiting the movement of the metal terminal 21 toward the fourth side; the second connecting section 242 limits the movement of the metal terminal 21 toward the second side, and the first arm section 2121 limits the movement of the spring piece 22 toward the fourth side; the first connecting section 241 limits the movement of the metal terminal 21 toward the third side, and the cooperation of the second elastic section 223 and the groove 233 limits the movement of the metal terminal 21 toward the first side to a certain extent; the second arm section 2122 limits the movement of the spring piece 22 toward the first side, and the cooperation of the groove 233 and the second elastic section 223 limits the movement of the spring piece 22 toward the third side. In this way, all-directional limiting between the spring piece 22 and the metal terminal 21 is achieved, so that the terminal assembly 2 can maintain connection stability and firmness both during the assembly process and during the use process after the assembly is completed, and avoid the terminal assembly 2 from loosening and increasing the difficulty of assembly.

[0046] In this embodiment, the docking section 213 includes two elastic arms 2131, one end of the two elastic arms 2131 is integrally connected to the second side plate 2112 and the third side plate 2113 on one side facing the fourth side, and the two elastic arms 2131 are symmetrically distributed. The two elastic arms 2131 extend obliquely toward each other from the tight-fitting section 211 in the height direction, bend, and continue to extend and bend in opposite directions, so that the two elastic arms 2131 are located at the bend to form a supporting point 2132, and the docking section 213 cooperates with the docking terminal of the docking connector through the supporting point 2132 to clamp the docking terminal. The supporting point 2132 is arranged opposite to the second socket 132 in the height direction.

[0047] In the illustrated embodiment, a first support plate 195 for supporting the arc section 222 and a second support plate 196 for supporting the first arm section 2121 are respectively formed on the cavity wall of the first cavity 141 facing the fourth side and located outside the two sides of the tight-fitting cavity section 111. The first support plate 195 and the second support plate 196 are arranged outside the two sides of the tight-fitting cavity section 111 along the width direction, and the first support plate 195 has a first support surface 1951 parallel to the first arm section 2121 on the side facing the second side, and has a second support surface 1961 adapted to the contour of the arc section 222 and one end of the first elastic arm 2131 connected to the arc section 222 on the side facing the second side. Preferably, the facing side surfaces of the first support plate 195 and the second support plate 196 are respectively flush with the cavity wall of the tight-fitting cavity segment 111 close thereto, so that the tight-fitting cavity segment 111 can be used together with the first shell 14 to a certain extent as a part of the tight-fitting cavity segment 111 for tight fitting with the tight-fitting segment 211.

[0048] During assembly, the first arm segment 2121 stops on the first support surface 1951, and the end of the first elastic segment 221 toward the third side and the curved segment 222 stop on the second support surface 1961 to support it and limit the terminal assembly 2 from continuing to move toward the fourth side. The first support plate 195 and the second support plate 196 are provided specifically for support to save materials.

[0049] The assembly method of the terminal assembly 2 and the plastic housing 1 of the present invention is as follows: first, the terminal assembly 2 is assembled, and then the docking section 213 is aligned with the tight-fitting cavity section 111, and the terminal assembly 2 is moved toward the fourth side along the height direction, so that the docking section 213 passes through the tight-fitting cavity section 111 and then penetrates into the docking cavity section 113, so that the second side plate 2112 and the third side plate 2113 of the tight-fitting section 211 are both pressed against the cavity wall of the tight-fitting cavity section 111, until the first arm section 2121 stops on the first support surface 1951, and the curved arc section 222 partially stops on the second support surface 1961; then, align the second housing 15 with the first housing 14, so that the first socket 131 corresponds to the position of the second elastic section 223, and move the second housing 15 toward the side of the first housing 14 along the height direction, so that the assembly section 212 and the spring 22 gradually extend into the second cavity 151, and the first engaging member 162 and the second engaging member 172 are squeezed and deformed inward, until the first buckle 1621 is inserted into the second slot 171, and the second buckle 1721 is inserted into the first slot 161, and the assembly of the terminal assembly 2 and the plastic housing 1 is completed. After the assembly is completed, the first socket 131 is opposite to the end of the second elastic section 223 away from the curved section 222 along the height direction, and the wire insertion port 191 is opposite to the end of the second elastic section 223 close to the middle connecting section 232.

[0050] In order to further limit the terminal assembly 2 after assembly, the side cavity wall of the second cavity 151 facing the third side is defined as the first side wall 114, and the wire insertion port 191 is formed on the first side wall 114 and penetrates the second housing 15 along the length direction of the middle connecting section 232. A limiting secondary cavity 115 is formed on the first side wall 114 for the curved section 222 to extend therein, and the limiting secondary cavity 115 is located outside the fourth side of the wire insertion port 191 and is used to limit the movement of the curved section 222 toward the first side of the second cavity 151. The inner cavity arm of the limiting secondary cavity 115 is L-shaped, and the limiting secondary cavity 115 is open toward the first side and toward the first side. During assembly, the second housing 15 gradually approaches the first housing 14 so that the limiting secondary cavity 115 is erected outside the second side and the third side of the curved section 222, thereby limiting the jumping of the curved section 222, so that the terminal assembly 2 is more stable after being installed in the plastic housing 1. In this embodiment, a positioning portion for limiting the movement of the docking section 213 toward the first side and the third side is formed in the docking cavity section 113. The positioning portion includes two positioning posts 197, which are arranged on the inner cavity wall of the docking cavity section 113 toward the fourth side along the length direction, and the two positioning posts 197 are arranged on both sides of the second socket 132 along the length direction of the plastic shell 1, and a first movable space for the docking terminal to penetrate therein is reserved between the two positioning posts 197. The widths of the two elastic arms 2131 are widened so that the two abutting points 2132 are abutted against the two positioning posts 197, so that the two elastic arms 2131 cannot move toward the first side or the third side in the width direction, and the elastic arms 2131 are prevented from tilting after installation, which affects the mating terminal's cooperation with them.

[0051] In order to test whether the terminal assembly 2 is powered on after assembly, a test hole 133 is provided on the plastic housing 1 at a position corresponding to the metal terminal 21. The test hole 133 can be provided on the first housing 14 or on the second housing 15. In this embodiment, the test hole 133 is provided on the first surface 121 and connected to the second cavity 151. The number and position of the second test holes 133 are consistent with those of the second cavity 151. When testing is required, a test instrument is inserted through the test hole 133 and contacts the terminal assembly 2 to perform an electrical test.

[0052] Please refer to Figure 1 , Figure 2 and Figure 3In this embodiment, the button 3 includes a main body 31 and a holding arm 32 which is parallel and spaced from one side of the main body 31, so that the button 3 is U-shaped as a whole. The two holding arms 32 are respectively pressed against the two crimping ears 224 of the second elastic section 223, and a second movable space 321 is provided between the two holding arms 32. The third arm section 2123 and the second connecting section 242 are both movable and penetrated into the second movable space 321 between the two holding arms 32, so as to prevent the third arm section 2123 and the second connecting section 242 from affecting the use of the button 3. Among them, the two holding arms 32 of the button 3 are extended on the ends away from the main body 31 to form a limiting portion 322, and the limiting portion 322 extends in reverse on both sides along the width direction so that the length of the limiting portion 322 in the width direction is greater than the length of the first socket 131 in the width direction; the side wall of the second cavity 151 facing the second side is limited to the second side wall 116, and the side of the limiting portion 322 facing the second side is pressed against the second side wall 116. A pressing groove 323 is formed on a side of the limiting portion 322 away from the main body 31 . The two pressing ears are used to press tightly into the pressing groove 323 . The limiting portion 322 abuts against the second side wall 116 of the second cavity 151 .

[0053] One of the assembly methods of the button 3 of the present invention is as follows: first, insert one end of the button 3 body 31 into the first socket 131 until the limiting portion 322 abuts against the second side wall 116 on the side facing the second side, and before or after that, install the terminal assembly 2 on the first shell 14, and then assemble the first shell 14 and the second shell 15. After assembly, the third arm section 2123 and the second connecting section 242 are inserted into the second active space 321, and the two crimping ears 224 are pressed against the holding groove 323.

[0054] When in use, the button 3 is pressed toward the fourth side along the height direction, and the button 3 moves toward the fourth side to squeeze the crimping ear 224 to form a clamp for clamping the cable between the second elastic section 223 and the middle connecting section 232. The cable is inserted into the clamp from the plug port 191. After releasing the button 3, the second elastic section 223 rebounds and presses against the cable. At this time, the groove 233 increases the fastening force between the cable and the middle connecting section 232, thereby improving the connection stability.

Claims

1. A plug-in wiring electrical connector, comprising a plastic housing, a terminal assembly mounted in the plastic housing, and a button mounted on the plastic housing and used to press the terminal assembly, wherein the terminal assembly comprises a metal terminal and a spring, and is characterized in that: The metal terminal is provided with a first assembly structure, and the spring sheet is provided with a second assembly structure. The metal terminal and the spring sheet are connected together through the first assembly structure and the second assembly structure to lock the metal terminal and the spring sheet to move in all directions.

2. The pluggable wiring electrical connector according to claim 1, characterized in that: The metal terminal includes a tight-fitting section, an assembly section connected to one end of the tight-fitting section, and a docking section connected to the other end of the tight-fitting section. The first assembly structure is formed on the assembly section, and the spring sheet cooperates with the first assembly structure through the second assembly structure to be connected to the assembly section.

3. The pluggable wiring electrical connector according to claim 2, characterized in that: The assembly section includes a first arm section extending toward the first side after being bent from the tight-fitting section, a second arm section extending from the first arm section along a plug-in direction toward the second side away from the tight-fitting section, and a third arm section extending from the second arm section toward the third side, and an end of the first arm section away from the tight-fitting section is inclined toward the second side; The spring sheet includes a first elastic section arranged in parallel with the first arm section, an arc section which bends toward the second side from one end of the first elastic section toward the third side and then continues to bend toward the first side, and a second elastic section which extends toward the second side after being bent from the arc section, and one end of the second elastic section away from the arc section is inclined toward the first side; The second assembly structure includes a first connecting section that is bent from the other end of the first elastic section and extends toward the second side along the plugging direction, a second connecting section that is bent from the first connecting section and extends toward the third side, and a through hole opened on the first connecting section, the through hole is opened away from one end of the first elastic section to the second connecting section, the first arm section is attached to the outer side wall of the first elastic section, the second arm section is attached to the outer side wall of the first connecting section, and the third arm section passes through the through hole and is attached to the inner side wall of the second connecting section; The first assembly structure includes a convex hump protruding inwardly on the inner side wall of the second arm segment, an intermediate connecting section protruding from the middle of the third arm segment toward the fourth side and a plurality of grooves formed on the inner side wall of the intermediate connecting section, the intermediate connecting section is spaced apart from the second connecting section and the third arm segments at both ends of the intermediate connecting section are both fitted to the third arm segment, the plurality of grooves are spaced apart along the length direction of the intermediate connecting section, the second elastic segment is pressed against any one of the grooves, the convex hump extends into the through hole and is located on the side of the through hole facing the first elastic segment.

4. The pluggable wiring electrical connector according to claim 3, characterized in that: A plug-in cavity is formed on the plastic shell, and the plug-in cavity includes a tight-fitting cavity section, an assembly cavity section located on one side of the tight-fitting cavity section and connected thereto, and a docking cavity section located on the other side of the tight-fitting cavity section and connected thereto, the tight-fitting section is tightly pressed against the tight-fitting cavity section, the assembly section and the spring sheet are installed in the assembly cavity section, and the docking section extends into the docking cavity section; a first surface is formed on the side of the plastic shell facing the second side, a first socket is provided at a position corresponding to the second elastic section on the first surface, the button is inserted into the first socket and abuts against the second elastic section; a second surface is formed on the side of the plastic shell facing the fourth side, a second socket is provided at a position corresponding to the docking cavity section on the second surface.

5. The pluggable wiring electrical connector according to claim 4, characterized in that: The second elastic arm section is in contact with the two side edges of one end of the groove and is symmetrically provided with crimping ears. The button includes a main body and holding arms parallel to and spaced from one side of the main body. The two holding arms are respectively pressed against the two crimping ears. The third arm section and the second connecting section are both movable and inserted between the two holding arms.

6. The pluggable wiring electrical connector according to claim 4, characterized in that: The plastic shell includes a first shell and a second shell, and the docking cavity section and the tight-fitting cavity section are both formed on the first shell; A first cavity connected to the tight-fitting cavity section is formed on the surface where the second side of the first shell is located, a clamping section is protruded on one side of one cavity arm of the first cavity away from the tight-fitting cavity section, a first buckle structure is formed on at least one other cavity wall of the first cavity, and the second socket is formed on the first shell; A second cavity is formed on the surface where the fourth side of the second shell is located, a clamping groove adapted to the clamping section is opened on a cavity wall of the second cavity corresponding to the clamping section, a second buckle structure is formed on at least one other cavity wall of the second cavity, and the second socket is formed on the first shell; The first main shell and the second shell are connected together by a first snap-fit ​​structure and a second snap-fit ​​structure, and the snap-fit ​​section is inserted into the snap-fit ​​groove, and the first cavity and the second cavity are connected to form the assembly cavity section.

7. The pluggable wiring electrical connector according to claim 6, characterized in that: The two pressing arms of the button extend on one end away from the main body to form a limiting portion, and a pressing groove is formed on the side of the limiting portion away from the main body. The two pressing ears are tightly pressed in the pressing groove, and the limiting portion is against the second side cavity wall of the second cavity.

8. The pluggable wiring electrical connector according to claim 6, characterized in that: A first support plate for supporting the curved arc section and a second support plate for supporting the first arm section are respectively formed on the cavity wall of the first cavity body facing the fourth side and outside the two sides of the tight-fitting cavity section.

9. The pluggable wiring electrical connector according to claim 8, characterized in that: A wire insertion port is formed on a first side wall of the second cavity toward the third side, and the port passes through the second shell along the length direction of the middle connecting section. The port is located opposite to the second elastic section and close to one end of the middle connecting section. A limiting secondary cavity is formed on the first side wall for the curved section to extend into. The limiting secondary cavity is located outside the fourth side of the port and is used to limit the movement of the curved section toward the first side of the second cavity.

10. The pluggable wiring electrical connector according to claim 6, characterized in that: A positioning portion is formed in the docking cavity section and is used to limit the movement of the docking section toward the first side and the third side.

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