Pluggable female end electric connector

Abstract

The utility model relates to the technical field of electric connectors, and discloses a plug-in type female end electric connector, which comprises a plastic shell and two rows of terminal assemblies, the plastic shell comprises a main body and a cover body, the main body is provided with a plug-in cavity for the two rows of terminal assemblies to pass through, and the cover body is provided with a plug-in hole for the two rows of terminal assemblies to pass through. The outer side wall of the main body is provided with a buckling structure used for being buckled with a butt joint connector. And a connecting structure for connecting the cover body to the main body and limiting each terminal assembly is formed between the main body and the cover body. Through the arrangement of the connecting structure, the connecting structure, the main body and the cover body are mutually interacted and mutually connected, so that the terminal assemblies are limited while the installation of multiple rows of terminal assemblies is facilitated, the terminal assemblies are pressed on the main body, and the cover body is limited on the main body so as to limit each row of terminal assemblies; therefore, the installation, connection and positioning of the multiple rows of terminal assemblies are ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a pluggable female electrical connector. Background Technology

[0002] Plug-in electrical connectors are electronic components used to achieve electrical connections. They are used in various electrical devices to facilitate wiring. Their function is to act as a bridge between interrupted circuits or independent circuits, undertaking the task of current or signal transmission; or they can be used with electrical terminals to form board-to-board connections; or they can be used independently for board-to-board connections. Plug-in electrical connectors are widely used in various fields, such as the automotive and electric vehicle industries, and various electronic equipment fields, to connect various electrical components.

[0003] The pluggable female electrical connector is a key component in a connector system. It interacts with the female electrical connector through a plugging and unplugging action, enabling convenient connection and disconnection of circuits. Traditional pluggable female electrical connectors typically consist of a plastic housing, terminals embedded within the housing, and spring contacts. These components work together: the spring contacts and terminals engage tightly to securely hold conductive elements (such as cables) that pass through the plastic housing, thereby ensuring reliable electrical signal transmission between the conductive elements and the terminals.

[0004] Currently, pluggable electrical connectors on the market generally adopt a single-row terminal design to balance compact structure and ease of use within distribution boxes or cabinets (especially in applications requiring lower power handling). However, for applications requiring high power transmission, a multi-row terminal structure is more suitable because it offers better stability and convenience. Therefore, how to effectively and reasonably install a multi-row terminal structure on pluggable female electrical connectors is particularly important. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a pluggable female electrical connector to solve the problem of how to install a multi-row terminal structure.

[0006] To solve the above-mentioned technical problems, the present invention provides a pluggable female electrical connector comprising a plastic shell and multiple rows of terminal assemblies. The plastic shell comprises a main body and a cover. The main body has insertion cavities for the multiple rows of terminal assemblies to pass through. The outer side wall of the main body has a fastening structure for engaging with a mating connector. A structure is formed between the main body and the cover to connect the cover to the main body and restrict the connection of each terminal assembly.

[0007] Furthermore, the main body has a first surface and a second surface that are relatively distributed along the insertion direction, and the insertion cavity extends through the first surface along the insertion direction; the connection structure includes a connecting plate protruding from each side of the first surface of the main body along the insertion direction, a slot formed on the inner side wall of each connecting plate, and a first buckle protruding from the outer side wall of the cover body corresponding to the position of each slot, the cover body is inserted into the inner side of each connecting plate and each first buckle is engaged in the slot.

[0008] Furthermore, each corner of the cover is provided with an extension block, and a groove is provided on the side away from the second surface at the connection of each connecting plate for the extension block to be riveted therein.

[0009] Furthermore, each of the plug-in cavities corresponds one-to-one with the terminal assembly and is arranged in two rows and at least two columns. A grid-like cavity wall is formed between the end of each row and column of plug-in cavities near the first surface. The connection structure also includes a grid-like rib groove recessed on the side of the cover facing the first surface of the main body. The rib groove is recessed corresponding to the cavity wall, so that the side of the cover facing the main body is divided into multiple mating surfaces. The cover is used to cover the first surface. The side of the cavity wall near the first surface is inserted into the rib groove and each of the mating surfaces extends into each plug-in cavity.

[0010] Furthermore, a protrusion is provided on the inner wall of the rib groove on the side away from the main body along the column direction.

[0011] Furthermore, the insertion cavity includes a sequentially connected assembly cavity section located near the first surface and penetrating the first surface, a tight-fit cavity section located in the middle, and a mating cavity section located near the second surface; each terminal assembly includes a metal terminal and a spring, the metal terminal including a tight-fit section for insertion and confined within the tight-fit cavity section, a mating end connected to one end of the tight-fit section, and an elastic clamping end connected to the other end of the tight-fit section, the mating end for assembly within the assembly cavity section, the elastic clamping end for insertion into the mating cavity section, and a retaining portion for clamping the mating terminal between the elastic clamping ends, and a second insertion port communicating with the mating cavity section is provided on the second surface at a position corresponding to each retaining portion, the spring being connected to the mating end.

[0012] Furthermore, the spring sheet has a first end and a second end. The first end has a movable hole for the mating end to pass through. The first end is sleeved on the mating end through the movable hole. The second end is bent and pressed against the mating end from the inside of the movable hole. A clamping opening is formed between the mating end and the first end, which can be changed in size by squeezing the spring sheet. A first insertion port is provided on the cover body at the position corresponding to each clamping opening.

[0013] Furthermore, the two rows of mating surfaces have a protruding extension section at one end facing the center and towards the main body, and the first insertion port passes through the protruding extension section along the insertion direction.

[0014] Furthermore, the mating end includes a first arm segment extending outwardly in the column direction after the self-tightening mating section is bent, a second arm segment extending from the first arm segment in the insertion direction, and a third arm segment extending from the second arm segment after being bent. A first side plate extending inwardly in the column direction and abutting against the cavity wall of the assembly cavity is connected to the side wall of the second arm segment. A stop block protruding on the cavity wall of the assembly cavity is provided to restrict the movement of the first side plate toward the second surface in the insertion direction. The middle part of the third arm segment protrudes inwardly in the column direction. The first end is sleeved on the third arm segment through a movable hole and extends inwardly in the column direction to form the clamping mouth. The second end abuts against the third arm segment.

[0015] Furthermore, a limiting groove is recessed on the mating surface of the cover at the position corresponding to the third arm segment, allowing it to pass through and press against the third arm segment.

[0016] The pluggable female electrical connector of this utility model has at least the following beneficial effects: by setting a connection structure, the connection structure, the main body and the cover interact and connect with each other, which facilitates the installation of multiple rows of terminal assemblies, while limiting the terminal assemblies, pressing the terminal assemblies onto the main body, and restricting the cover onto the main body to limit each row of terminal assemblies, thereby ensuring the installation, connection and positioning of multiple rows of terminal assemblies. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the male connector of this utility model;

[0019] Figure 2 This is an exploded view of the male connector of this utility model;

[0020] Figure 3 This is an exploded view of the male connector of this utility model from another angle;

[0021] Figure 4 This is a cross-sectional view of the male connector of this utility model;

[0022] Figure 5 This is a schematic diagram of the terminal assembly of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the cover of this utility model (including some connecting structures).

[0024] The meanings of the labels in the attached diagram are as follows:

[0025] Plastic outer shell 1, main body 11, insertion part 11a, assembly part 11b, cover 12, insertion cavity 13, open side 13a, assembly cavity section 131, first side wall 1311, tight-fitting cavity section 132, mating cavity section 133, mating surface 134, protruding section 135, first surface 141, second surface 142, first insertion port 143, second insertion port 144, pressing port 145, fastening structure 15, first extension plate 151, second extension plate 152, third extension plate 153, pressing plate 154, second movable space 155, first buckle 156, connecting plate 161, slot 162, second buckle 163, rib groove 164, row groove 1641, column groove 1642, extension block 165. Groove 166, partition 171, limiting groove 172, stop block 173, clearance groove 174, protrusion 175, terminal assembly 2, metal terminal 21, tight fitting section 211, second side plate 2111, third side plate 2112, mating end 212, first arm section 2121, second arm section 2122, third arm section 2123, inflection point 2123a, first side plate 2124, elastic clamping end 213, elastic arm 2131, abutting part 2132, spring piece 22, first end 22a, second end 22b, first arc-shaped section 221, second arc-shaped section 222, mating section 223, abutting section 224, abutting end 2241, movable hole 225, first movable space 226, clamping mouth 227. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 6 The pluggable female connector of this utility model includes a plastic housing 1 and multiple rows of terminal assemblies 2 installed inside the plastic housing 1. The plastic housing 1 is used to insulate and protect each row of terminal assemblies 2. The terminal assemblies 2 are used to mate with the male terminals of the mating male connector to achieve electrical connection, and the terminal assemblies 2 are used to detachably connect with external conductive elements such as cables, thereby clamping and fixing the conductive elements or releasing the conductive elements. In this embodiment, the terminal assemblies 2 are arranged in two rows, and correspondingly, the plastic housing 1 is provided with two rows of corresponding mounting structures for the two rows of terminal assemblies 2. In another embodiment, the terminal assemblies 2 are arranged in three rows, and the plastic housing 1 is provided with three rows of corresponding mounting structures for the two rows of terminal assemblies 2. In yet another embodiment, the terminal assemblies 2 are arranged in at least three rows, and the plastic housing 1 is provided with at least three rows of corresponding mounting structures for the at least three rows of terminal assemblies 2. The terminal assemblies 2 are arranged in at least two columns, and the corresponding mounting structures are arranged in at least two columns, with the terminal assemblies 2 mounted in a rectangular array on the plastic housing 1.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The plastic housing 1 has a geometric three-dimensional structure. In one embodiment, the plastic housing 1 is composed of at least one cubic structure and is adapted to the terminal assembly 2. In another embodiment, the plastic housing 1 has a prism-shaped structure and is adapted to the terminal assembly 2. In this embodiment, the plastic housing 1 is injection molded from an insulating material such as plastic. To facilitate understanding of this structure, the present invention is labeled with "plug-in," "row," and "column" to indicate different directions, with the plug-in direction, row direction, and column direction being mutually perpendicular to form a triaxial structure. The plastic housing 1 has a length, width, and height, with the row direction corresponding to its length, the column direction corresponding to its width, and the plug-in direction corresponding to its height.

[0029] In this embodiment, the plastic shell 1 includes a main body 11 and a cover 12. A hollow cavity 13 is formed within the main body 11. The cavity 13 is arranged in two rows, independent of each other, and in a rectangular array, corresponding to the number of terminal assemblies 2. Each terminal assembly 2 in the two rows passes through the respective cavity 13 to be mounted on the plastic shell 1. For ease of understanding, the main body 11 has a first surface 141 and a second surface 142 that are relatively distributed along the insertion direction. The first surface 141 and the second surface 142 are relatively distributed and both refer to the outer surface of the main body 11. For ease of installation, the insertion cavity 13 extends through the first surface 141 along the insertion direction to form an open side 13a. The cover 12 is used to cover the open side 13a of the insertion cavity 13, that is, the cover 12 covers the first surface 141 so that the cover 12 can be removed during installation, the terminal assembly 2 can be inserted into the insertion cavity 13, and then the cover 12 is used to cover the open side 13a of the insertion cavity 13 to prevent the terminal assembly 2 from detaching from the insertion cavity 13, thereby realizing the detachable connection of the terminal assembly 2.

[0030] The insertion cavity 13 includes an assembly cavity section 131 near the first surface 141, a tight-fitting cavity section 132 in the middle, and a mating cavity section 133 near the second surface 142. The assembly cavity section 131 is located on the side of the tight-fitting cavity section 132 facing the first surface 141 along the insertion direction, and the mating cavity section 133 is located on the side of the tight-fitting cavity section 132 facing the second surface 142. The assembly cavity section 131, the tight-fitting cavity section 132, and the mating cavity section 133 are arranged sequentially and connected sequentially. The open side 13a is formed on the side of the assembly cavity section 131 facing the first surface 141 along the insertion direction. The assembly cavity section 131 is wider than the tight-fitting cavity section 132, and the cavity wall of the assembly cavity section 131 facing the second surface 142 along the insertion direction near the tight-fitting cavity section 132 is defined as a first sidewall 1311. The widths of the mating cavity 132 and the docking cavity 133 can be the same, or the width of the docking cavity 133 can be slightly smaller than that of the mating cavity 132. One end of the terminal assembly 2 can be inserted into the mating cavity 132 and the docking cavity 133. The first sidewall 1311 can restrict the other end of the terminal assembly 2 from continuing to move into the mating cavity 132 and the docking cavity 133. Correspondingly, the main body 11 has a plug-in portion 11a and an assembly portion 11b. The assembly portion 11b is located on the first side of the plug-in portion 11a. When the female connector mates with the male connector, the plug-in portion 11a moves closer to and plugs into the male connector along the plugging direction. A first socket 143 is provided on the first surface 141 at the position corresponding to the terminal assembly 2, which is connected to the assembly cavity 131. The first socket 143 passes through the cover 12 along the insertion direction toward the second surface 142 and is used for the cable to pass through and cooperate with the terminal assembly 2. A second socket 144 is provided on the second surface 142 at the position corresponding to the terminal assembly 2, which is connected to the docking cavity 133. The second socket 144 passes through the second surface 142 along the insertion direction toward the first surface 141 and is used for the male terminal to pass through and enter the docking cavity 133, so that the male terminal can be docked with the terminal assembly 2 to realize the transmission of electrical signals.

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In the illustrated embodiment, a snap-fit ​​structure 15 is formed on one outer side wall of the plastic housing 1. The snap-fit ​​structure 15 is used to snap onto the male connector when it is plugged in, thereby improving the connection stability between the male connector and the female connector. The snap-fit ​​structure 15 is formed on one of the outer side walls of the body 11 along the column direction. The fastening structure 15 includes a first extension plate 151 extending from the outer wall of the main body 11 along the column direction toward the side away from the main body 11, a second extension plate 152 extending from the end of the first extension plate 151 away from the main body 11 along the insertion direction toward the side of the first surface 141, a third extension plate 153 extending from the end of the second extension plate 152 away from the first extension plate 151 after being bent, along the column direction toward the side away from the main body 11, and a pressing plate 154 extending from the third extension plate 153 after being bent, along the insertion direction toward the side of the first surface 141. The third extension plate 153 is also inclined relative to the second extension plate 152 toward the side of the first surface 141. The second extension plate 152 is parallel to the outer wall of the insertion portion 11a, so that the second extension plate 152, the third extension plate 153 and the pressing plate 154 are all spaced apart from the insertion portion 11a. The fastening structure 15 is integrally molded into the main body 11 and is also made of plastic, thus possessing a certain degree of elasticity. A second movable space 155 is formed between the fastening structure 15 and the outer wall of the insertion portion 11a, allowing the fastening structure 15 to deform toward the main body 11. A first buckle 156 protrudes from the side of the second extension plate 152 facing away from the main body 11, and the first buckle 156 has a wedge-shaped structure that gradually widens toward the second surface 142 along the insertion direction, and has a first guide slope. The first extension plate 151, the second extension plate 152, and the first latch 156 are all located on the insertion portion 11a to facilitate insertion into the mating male connector. The first guide ramp presses against the inner wall of the male connector when inserted, causing the second extension plate 152 to deform towards the second movable space 155, allowing the first latch 156 to pass through the inner wall of the male connector until it engages in the corresponding slot structure. The first latch 156 then locks the insertion portion 11a to the male connector. The pressing plate 154 corresponds to the assembly portion 11b of the main body 11 and is located outside the male connector when the main body 11 is inserted into it. When the main body 11 is inserted into the male connector, the pressing plate 154 can be manually pressed to deform the second extension plate 152 towards the second movable space 155, facilitating the movement of the first latch 156 through the inner wall of the male connector. When disassembling the connected plastic housing 1 and male connector, the first latch 156 can be easily disassembled by pressing the pressing plate 154 again to disengage it from the slot structure on the male connector.

[0032] Please refer to Figure 6In this embodiment, to facilitate the connection between the cover 12 and the main body 11 and to restrict the terminal assembly 2, a connection structure is formed between the main body 11 and the cover 12 to connect the cover 12 to the main body 11 and restrict the terminal assembly 2. The connection structure includes a connecting plate 161 extending from at least one opposite side of the first surface 141 of the main body 11 along the insertion direction, a slot 162 formed on the inner sidewall of each connecting plate 161, and a first buckle 163 protruding on the outer sidewall of the cover 12 corresponding to the position of each slot 162. In this embodiment, since the terminal assembly 2 is arranged in two rows, the insertion cavity 13 is also arranged in two rows corresponding to the terminal assembly 2. For ease of installation, the main body 11 and the outer shell 12 are symmetrically arranged along the column direction with their midpoints, and correspondingly, the two rows of insertion cavities 13 are also symmetrically distributed in the column direction. The first socket 143 and the second socket 144 are also arranged in two rows. The number of columns of the insertion cavity 13, the first socket 143, and the second socket 144 is equal to the number of columns of the terminal assembly 2. That is, each terminal assembly 2 has a separate insertion cavity 13, a first socket 143, and a second socket 144 corresponding to it. Two connecting plates 161 can be provided and respectively located on both sides of the first surface 141 along the column direction. An installation space is formed between the two connecting plates 161. The length, width, and height of the installation space are adapted to the length, width, and height of the cover 12, respectively, so that the cover 12 can be inserted into the inner side of each connecting plate 161. A slot 162 is provided on each connecting plate 161 corresponding to a insertion cavity 13. That is, the number of slots 162 on both connecting plates 161 is the same as the number of insertion cavities 13. The position and number of the first latches 163 correspond to the slots 162. The first buckle 163 is wedge-shaped and gradually widens towards the side away from the main body 11, having a second guide slope. During assembly, the cover 12 is inserted into the installation space, and the first buckle 163 is gradually squeezed into the slot 162 during installation. During the installation of the cover 12, the first buckle 163 is pressed against the inner side of the connecting plate 161, and the connecting plate 161 is squeezed outward to a certain extent. The first buckle 163 is squeezed into it until it penetrates into the slot 162 to achieve locking. To further optimize the connection structure, connecting plates 161 are also formed on the two sides of the first surface 141 along the row direction. The ends of each pair of adjacent connecting plates 161 intersect to form corners. An extension block 165 is protruding at each corner of the cover 12. A groove 166 is recessed on the side away from the second surface 142 at the connection of each connecting plate 161 for the extension block 165 to be riveted therein. The groove 166 is through the side away from the main body 11 along the insertion direction and through the side of the installation space, so that the extension block 165 can be inserted into the groove 166 when the cover 12 moves towards the main body 11 along the insertion direction. When the cover 12 is installed in the installation space, the extension block 165 is riveted into the groove 166.It should be noted that, in order to facilitate the insertion and mating of the main body 11 with the male connector, a clearance groove 174 is provided on the second surface 142 at the gap between each mating cavity section 133. The clearance groove 174 is provided corresponding to the partition 171 so that the second surface 142 is divided into two rows and several columns.

[0033] Each row and column of insertion cavities 13 has a grid-like cavity wall formed between one end of the first surface 141 (i.e., between each assembly cavity segment 131), located inside each connecting plate 161, thus defining the cavity wall between any two adjacent insertion cavities 13 as a partition 171. To increase the stability and firmness of the connection between the cover 12 and the main body 11, the connection structure also includes a rib groove 164 recessed on the side of the cover 12 facing the first surface 141 of the main body 11. The number of rib grooves 164 is the same as the number of partitions 171 and they are opened opposite each other, thus presenting a grid shape. The rib grooves 164 extend through the side facing the main body 11. Since the rib grooves 164 are grid-like and correspond to each partition 171, they have row grooves 1641 parallel to the row direction and column grooves 1642 parallel to the column direction. Because the insertion cavity 13 is arranged in two rows, the partition 171 parallel to the row direction has only one row, each row groove 1641 has one groove, and each column groove 1642 has at least one groove. If the insertion cavity 13 has three columns, then there are two column grooves 1642; if the insertion cavity 13 has four columns, then there are three column grooves 1642, and so on. The row grooves 1641 are located at the midpoint of each column groove 1642 and intersect perpendicularly with each column groove 1642, and the row grooves 1641 and each column groove 1642 are interconnected. The two ends of the row grooves 1641 extend through the row direction, and the two ends of the column grooves 1642 extend through the column direction. The rib groove 164 divides the side of the cover 12 facing the main body 11 into multiple mating surfaces 134. When the cover 12 is placed on the first surface 141 and the first buckle 163 is engaged in the slot 162, the side of the partition 171 away from the fastening break 132 is inserted into the rib groove 164, and each mating surface 134 extends into each insertion cavity 13. Preferably, a protrusion 175 is provided on the inner wall of the rib groove 164 (i.e., the row groove 1642) along the row direction away from the main body 11, so as to facilitate modification by adding or removing glue during the injection molding of the cover 12. Preferably, one end of the two rows of mating surfaces 134 facing the middle is provided with a protruding section 135 on the side facing the main body 11. The end face of the protruding section 135 is still defined as the mating surface 134. The first insertion port 143 passes through the protruding section 135 along the insertion direction. After the cover 12 is assembled on the main body 11, the protruding section 135 extends into the assembly cavity section 131. In this embodiment, the limiting groove 172 is recessed on the mating surface 134 of the cover 12. When the terminal assembly 2 is installed in the main body 11, when the cover 12 is placed on the main body 11 to block the open side 13a of the insertion cavity 13, the end of the terminal assembly 2 extends into the limiting groove 172. The inner wall of the limiting groove 172 abuts against the terminal assembly 2, thereby further restricting the terminal assembly 2 and preventing the terminal assembly 2 from moving outward toward the open side 13a. At the same time, it can also restrict the movement of the terminal assembly 2 in the column direction to a certain extent.

[0034] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The terminal assembly 2 includes a metal terminal 21 and a spring contact 22, both of which can pass through the insertion cavity 13. The metal terminal 21 is inserted into the insertion cavity 13, and the spring contact 22 is installed in the insertion cavity 13. The spring contact 22 has a first end 22a and a second end 22b. The first end 22a extends toward and intersects with the metal terminal 21, and is movably connected to the metal terminal 21, so that the first end 22a can move relative to the metal terminal 21, or the metal terminal 21 can move relative to the first end 22a. The second end 22b is bent from the first end 22a and intersects with the first end 22a and abuts against the metal terminal 21, so that a first movable space 226 is formed between the inner sides of the spring piece 22. The first movable space 226 allows the first end 22a to move relative to the metal terminal 21. When the first end 22a moves after being squeezed, it cooperates with the metal terminal 21 to restrict or release the conductive element. The first socket 143 is directly opposite the metal terminal 21. When the first end 22a is squeezed, the first movable space 226 allows the first end 22a to move and gradually narrow.

[0035] In this embodiment, the metal terminal 21 is made of a conductive metal material such as copper, and includes a fitting section 211 for insertion and confined within the fitting cavity 132, a mating end 212 connected to one end of the fitting section 211, and an elastic clamping end 213 connected to the other end of the fitting section 211. During assembly, the mating end 212 is fitted into the assembly cavity 131, the elastic clamping end 213 extends into the mating cavity 133 and aligns with the second insertion port 144, the fitting section 211 abuts against the cavity wall of the fitting cavity 132 to restrict the movement of the metal terminal 21, the mating end is located within the assembly cavity 131, and a spring piece 22 is mounted on the mating end 212 so that it is installed within the assembly cavity 131 along with the metal terminal 21.

[0036] The fitting section 211 includes a second side plate 2111 and two third side plates 2112 that extend from opposite sides of the second side plate 2111 after being bent. The second side plate 2111 is parallel to the column direction, and the two third side plates 2112 extend from the two sides of the second side plate 2111 along the column direction. The two third side plates 2112 are parallel to the insertion direction and perpendicular to the column direction, so that the fitting section 211 has a U-shaped structure. Due to the elastic properties of its material, the size of the fitting cavity section 132 is adapted to the fitting section 211. When the fitting section 211 is inserted into the fitting cavity section 132, the two third side plates 2112 of the fitting section 211 abut against the cavity wall of the fitting cavity section 132.

[0037] The mating end 212 includes a first arm segment 2121 that extends outward in the column direction after the self-tightening mating section 211 is bent, a second arm segment 2122 that extends from the first arm segment 2121 in the insertion direction, and a third arm segment 2123 that extends from the second arm segment 2122 after being bent. On both sides of the second arm segment 2122 along the width direction of the second arm segment 2122, there are first side plates 2124 extending in the column direction. After the spring piece 22 is installed on the metal terminal 21, the spring piece 22 and the first side plate 2124 are respectively located on opposite sides of the second arm segment 2122. On one side wall of the two rows of assembly cavity sections 131 facing each other along the column direction, there is a stop block 173 for abutting against the first side plate 2124 after the metal terminal 21 is inserted into the insertion cavity 21. After the tight fitting section 211 of the metal terminal 21 is inserted into the tight fitting cavity section 132, the first side plate 2124 is made to face the stop block 173 and abut against the stop block 173. Alternatively, there can be a certain gap between the third side plate 2112 and the stop block 173. In this embodiment, the limiting groove 172 is opened directly opposite the third arm segment 2123 in the insertion direction. The middle part of the third arm segment 2123 is bent and protruded towards the side where the first side plate 2124 is located (i.e., the two rows of terminal assemblies 2 face each other or inward in the column direction) to form an inflection point 2123. Both ends of the third arm segment 2123 extend backward in the insertion direction and are inclined away from the first side plate 2124. The second end 22b of the spring piece 22 can abut against the inflection point 2123a. After assembly, the third arm segment 2123 extends into the limiting groove 172 and is held in place in the insertion cavity 13 by the inner wall of the limiting groove 172. To facilitate cable installation, the side wall of the limiting groove 172 facing the row groove 1641 is connected to the row groove 1641 to form an opening. The opening is only opened on the side of the groove wall facing the main body 11 relative to the limiting groove 172. Therefore, after the assembly is completed, the third arm segment 2123 is still pressed and confined in the limiting groove 172, while the inflection point 2123a passes through the opening and enters the first socket 143.

[0038] The elastic clamping end 213 includes two elastic arms 2131 extending from the side edge of the two third side plates 2112 away from the mating section 211 along the insertion direction and facing away from the mating end 212. The two elastic arms 2131 gradually tilt towards each other and narrow, and after the two elastic arms 2131 approach each other, they bend and continue to tilt away from each other and widen, so that the two elastic arms 2131 have abutting portions 2132 that are close to or abut against each other. During assembly, one end of the elastic arm 2131 is inserted into the mating cavity section 133, the two third side plates 2112 are used to abut against the cavity wall of the mating cavity section 133, one end of the abutting portion 2132 is close to the second insertion port 144, and the mating male terminal is inserted into the mating cavity section 133 through the second insertion port 144 and squeezed between the two elastic arms 2131, with the abutting portion 2132 abutting against the mating male terminal.

[0039] In this embodiment, the spring piece 22 is made of a conductive metal, such as stainless steel. The spring piece 22 includes a first arc-shaped section 221 with both ends bent towards the cover 12; a second arc-shaped section 222 extending from one end of the first arc-shaped section 221 in the insertion direction away from the first arc-shaped section 221 and then bending towards the second arm section 2122 in the column direction; a mating section 223 extending from the second arc-shaped section 222 in the column direction; and a supporting section 224 extending from the other end of the first arc-shaped section 221 towards the mating section 223. The end of the second arc-shaped section 222 away from the first arc-shaped section 221 is inclined in the column direction towards the side away from the supporting section 224. The mating section 223 is the first end 22a of the spring piece 22, and the middle part of the mating section 223 is bent and protrudes towards the side away from the first arc-shaped section 221. The abutment section 224 is the second end 22b of the spring piece 22. The end of the abutment section 224 away from the first arc-shaped section 221 is inclined towards the side away from the second arc-shaped section 222 to form an abutment end 2241, so that the abutment section 224 is parallel to the second arm section 2122 and the abutment end 2241 is parallel to the third arm section 2123 and close to the end of the second arm section 2122. A movable hole 225 is formed through the mating section 223 along the insertion direction. The width of the movable hole 225 is greater than the width of the third arm section 2123 and the width of the abutment end 2241. The abutment end 2241 is movably inserted into the movable hole 225 so that the spring piece 22 surrounds a closed loop of the first movable space 226. The third arm segment 2123 of the metal terminal 21 moves into the movable hole 225 along the insertion direction. One end of the third arm segment 2123 connected to the second arm segment 2122 is located within the movable hole 225. The abutting end 2241 abuts against the inflection point 2123a of the third arm segment 2123 to restrict the movement of the abutting end 2241. In this embodiment, when the abutting end 2241 abuts against the third arm segment 2123, the abutting section 224 is close to the second arm segment 2122, and the third arm segment 2123 passes through the third movable hole 225, the spring piece 22 is in a compressed state, causing the mating section 223 to abut against the third arm segment 2123 through the movable hole 225. This, in turn, cooperates with the abutting section 224 to restrict the spring piece 22 onto the metal terminal 21, thus completing the connection between the metal terminal 21 and the spring piece 22. The mating section 223 is fitted onto the third arm section 2123 through the movable hole 225, thereby forming a clamp 227 with the metal terminal 21, which can be changed in size by squeezing the spring 22. The clamp 227 is formed by the inward end of the movable hole 225 surrounding the third arm section 2123, and the first insertion port 143 is provided corresponding to the clamp 227.On both sides of the main body 11 along the column direction, at positions directly opposite the assembly cavity section 131, there are pressing ports 145 that penetrate the main body 11 and connect to each assembly cavity section 131 respectively. The pressing ports 145 are directly opposite the second arc-shaped section 222, so that the second arc-shaped section 222 can be squeezed by the pressing ports 145, thereby causing the mating section 223 to move inward and enlarge the clamping opening 227, so as to allow the cable to pass through. When the second arc-shaped section 222 is released, the mating section 223 springs back and moves towards the pressing port 145, clamping the cable together with the third arm section 2123. The space between the two first side plates 2124 can allow the cable to pass through, avoiding obstruction of the cable connection. In order to facilitate the installation of the mating section 223, there is space between the stop block 173 and the mating section 223 for the mating section 223 to move inward.

[0040] The working method of one embodiment of the pluggable female connector of this utility model is as follows: During assembly, firstly, the third arm segment 2123 passes through the movable hole 225, and the curved elastic segments 322 of the two rows of terminal assemblies 2 are all located on the side of the second arm segment 2122 facing outward along the column direction. The abutment section 224 and the mating section 223 are mated with the third arm segment 2123 to install the spring piece 22 on the mating end 212. After one end of the abutment part 2132 faces the plugging cavity 13 and the two rows of spring pieces 22 face outward relative to the second arm segment 2122 along the column direction, the terminal assembly 2 is inserted into the plugging cavity 13. 3. After the tight fitting section 211 abuts against the cavity wall of the tight fitting cavity section 132, the first side plate 2124 approaches the stop block 173, the holding part 2132 faces the second insertion port 144, and the spring piece 22 is restricted within it by the cavity walls on both sides of the assembly cavity section 131. After the spring piece 22 is installed in the assembly cavity section 131, the cover 12 is placed on the main body 11, so that the first insertion port 143 corresponds to the mating section 223 along the insertion direction, so that the limiting groove 172 presses against the third arm section 2123, and the mating surface 134 extends into the assembly cavity section 131, so that the side of the partition plate 171 is inserted into the rib groove 164. In use, press the second arc-shaped section 222 from the pressing port 145, so that the mating section 223 faces the stop block 173 and opens the clamp 227. Then, keep the clamp 227 open, pass the cable through the clamp 227 through the first socket 143, and then release the second arc-shaped section 222. The second arc-shaped section 222 rebounds and presses against the cable. Insert the plug part 11a of the main body 11 into the mating male connector, so that the male terminal passes through the second socket 144 and is clamped in the support part 2132, realizing the circuit connection of the female connector of this utility model.

Claims

1. A pluggable female electrical connector, comprising a plastic housing and a multi-row terminal assembly, characterized in that: The plastic housing includes a main body and a cover. The main body has insertion cavities for multiple rows of terminal assemblies to pass through. The outer side wall of the main body has a fastening structure for engaging with a mating connector. A structure is formed between the main body and the cover to connect the cover to the main body and restrict the connection of each terminal assembly.

2. The pluggable female electrical connector as described in claim 1, characterized in that: The main body has a first surface and a second surface that are relatively distributed along the insertion direction, and the insertion cavity extends through the first surface along the insertion direction; the connection structure includes a connecting plate protruding from each side of the first surface of the main body along the insertion direction, a slot formed on the inner side wall of each connecting plate, and a first buckle protruding from the outer side wall of the cover body corresponding to the position of each slot, the cover body is inserted into the inner side of each connecting plate and each first buckle is engaged in the slot.

3. The pluggable female electrical connector as described in claim 2, characterized in that: The cover has protruding extension blocks at each corner, and a groove is provided at the connection of each connecting plate on the side away from the second surface for the extension blocks to be riveted therein.

4. The pluggable female electrical connector as described in claim 2 or 3, characterized in that: The insertion cavities correspond one-to-one with the terminal assemblies and are arranged in two rows and at least two columns. Each row and column of insertion cavities has a grid-like cavity wall located inside each connecting plate between the ends of the insertion cavities near the first surface. The connection structure also includes a grid-like rib groove recessed on the side of the cover facing the first surface of the main body. The rib groove is recessed corresponding to the cavity wall, so that the side of the cover facing the main body is divided into multiple mating surfaces. The cover is used to cover the first surface. The side of the cavity wall near the first surface is inserted into the rib groove and each of the mating surfaces extends into each insertion cavity.

5. The pluggable female electrical connector as described in claim 4, characterized in that: A protrusion is provided on the inner wall of the rib groove on the side away from the main body along the column direction.

6. The pluggable female electrical connector as described in claim 4, characterized in that: The insertion cavity includes an assembly cavity section located near the first surface and penetrating the first surface, a tight-fit cavity section located in the middle, and a mating cavity section located near the second surface, which are connected in sequence. Each of the terminal assemblies includes a metal terminal and a spring. The metal terminal includes a mating section for insertion and confined within a mating cavity, a mating end connected to one end of the mating section, and an elastic clamping end connected to the other end of the mating section. The mating end is used to assemble into the assembly cavity, and the elastic clamping end is used to penetrate into the mating cavity. There are abutment portions between the elastic clamping ends for clamping the mating terminal. A second insertion port communicating with the mating cavity is provided on the second surface at a position corresponding to each abutment portion. The spring is connected to the mating end.

7. The pluggable female electrical connector as described in claim 6, characterized in that: The spring sheet has a first end and a second end. The first end has a movable hole for the mating end to pass through. The first end is sleeved on the mating end through the movable hole. The second end is bent and pressed against the mating end from the inside of the movable hole. A clamping opening is formed between the mating end and the first end, which can be changed in size by squeezing the spring sheet. A first insertion port is provided on the cover body at the position corresponding to each clamping opening.

8. The pluggable female electrical connector as described in claim 7, characterized in that: The two rows of mating surfaces have a protruding extension section at one end facing the middle and towards the main body, and the first insertion port passes through the protruding extension section along the insertion direction.

9. The pluggable female electrical connector as described in claim 7, characterized in that: The mating end includes a first arm segment extending outward in the column direction after the self-tightening section is bent, a second arm segment extending from the first arm segment in the insertion direction, and a third arm segment extending from the second arm segment after being bent. A first side plate extending inward in the column direction and abutting against the cavity wall of the assembly cavity is connected to the side wall of the second arm segment. A stop block protruding on the cavity wall of the assembly cavity is provided to restrict the movement of the first side plate toward the second surface in the insertion direction. The middle part of the third arm segment protrudes inward in the column direction. The first end is sleeved on the third arm segment through a movable hole and extends inward in the column direction to form the clamp. The second end abuts against the third arm segment.

10. The pluggable female electrical connector as described in claim 9, characterized in that: The cover has a recessed groove on its mating surface, corresponding to the position of the third arm segment, for inserting into and pressing down on the third arm segment.

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