Pluggable terminal block

Abstract

The utility model relates to the field of terminal blocks, and discloses a plug-in type wiring terminal block, which comprises an outer shell, a terminal assembly and a handle movably inserted on the outer shell, the terminal assembly comprises a conductive terminal and an elastic sheet, the conductive terminal is provided with a first side wall and a second side wall, a first end of the elastic sheet is limited on the first side wall, and a second end of the elastic sheet is limited on the second side wall. The second end of the elastic sheet is elastically propped against the second side wall; the handle is unidirectionally limited by the outer shell; the handle can move inwards to prevent the second end of the elastic piece from being connected with the second side wall, and the handle can also move outwards to recover the connection between the second end of the elastic piece and the second side wall. By limiting the first end of the elastic sheet on the first side wall of the conductive terminal, the connection between the elastic sheet and the conductive terminal is tighter, so that the first end of the elastic sheet is prevented from moving to influence the normal use of the terminal assembly, and the handle is matched with the elastic sheet to realize the mounting and dismounting of the conductive element, so that the safety is improved and the service life is prolonged to a certain extent. Influence of device failure on use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal blocks, in particular to a plug-in type wiring terminal block. Background Art

[0002] Plug-in terminal blocks are devices used to achieve electrical connections. They serve as a bridge between blocked circuits or independent circuits, and are responsible for current or signal transmission. They can also be used in conjunction with electrical terminals to form board-to-line connections. They can also be used independently to connect boards. Plug-in terminal blocks are widely used in various fields, such as automobiles, electric vehicles and other motor vehicles, and various electronic equipment fields to connect various electrical components.

[0003] The plug-in terminal block connects and disconnects the circuit by plugging and unplugging with the complementary plug-in terminal block. The plug-in terminal block is usually composed of a plastic body, terminals, springs, and handles. The interaction mechanism between the spring and the terminal is to open and close by turning the handle to ensure the tightness and stability of the connection. However, in actual use, the spring may be offset or rotated because it is not limited when squeezed by the handle. There are two main reasons for the position offset or rotational displacement of the spring: one is that the spring is not effectively limited when squeezed by the handle, so that the spring rebounds after being pressed, resulting in position offset; the other is that the spring and the terminal are not tightly matched, which makes it easy to rotate or shift when subjected to external force. Utility Model Content

[0004] 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 pluggable terminal block to solve the problem of poor stability of the spring piece.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a pluggable terminal block including an outer shell, a terminal assembly and a handle movably inserted into the outer shell, the terminal assembly is configured to include a conductive terminal and a spring, the conductive terminal has a first side wall and a second side wall opposite to each other, the first end of the spring is limited to the first side wall, the second end of the spring elastically abuts or is close to the second side wall, so that the spring is limited to the conductive terminal to avoid movement, etc., to ensure the quality and safety of the entire device; the handle is unidirectionally limited by the outer shell to prevent it from detaching from the outer shell; the handle is pushed along the first direction to deform the spring and thus move the second end of the spring away from the second side wall, the handle is pushed along the opposite direction of the first direction to elastically restore the spring and make the second end of the spring abut against or close to the second side wall, so as to control the opening and closing of the spring and the conductive terminal to connect the conductive element.

[0006] Furthermore, a limiting portion is formed on the first side wall, and the first end of the elastic piece is connected to the first side wall through the limiting portion to limit the movement of the first end of the elastic piece and ensure the stability of the elastic piece.

[0007] Furthermore, the limiting portion includes a convex bump formed by stamping and protruding inwards from the first side wall. The first end of the elastic piece has a connecting section parallel to and fitting against the first side wall. A perforation for the convex bump to be clamped therein to limit the first end is provided at a position corresponding to the convex bump on the connecting section. The elastic piece is fixed through the riveting between the convex bump and the perforation.

[0008] Furthermore, a stamping block is formed by stamping and dividing inwards on the second side wall. The stamping block inclines inwards and towards the side away from the second end of the elastic piece to form a fold angle with the second side wall. A clamping opening for clamping the conductive element is formed between the second end of the elastic piece and the fold angle, so that the conductive element can penetrate into the clamping opening, and the second end of the elastic piece presses the conductive element against the fold angle, improving the pressing force on the conductive element and enhancing the firmness.

[0009] Furthermore, the outer housing includes a first housing and a second housing. An assembly cavity is jointly defined inside the first housing and the second housing. One ends of the conductive terminal, the elastic piece, and the handle are all installed in the assembly cavity; a clamping groove is formed on the first housing, and a buckle for clamping into the clamping groove to connect the first housing and the second housing is formed at a position corresponding to the clamping groove on the second housing, thereby realizing the detachable connection of the first housing and the second housing and facilitating the installation of the conductive terminal, the elastic piece, and the handle.

[0010] Furthermore, an inclined cutting groove inclined towards the inside of the assembly cavity is formed on the first side of the first housing at a position corresponding to the buckle. The inclined cutting groove is used for positioning and guiding the buckle when the buckle approaches the first housing, so as to facilitate the positioning and guiding of the buckle and reduce the interference between the first housing and the second housing.

[0011] Furthermore, a receiving groove is recessed on the first side of the first housing, and a secondary receiving groove communicating with the receiving groove and forming a stepped cavity with the receiving groove is provided. An installation portion that penetrates into the receiving groove when the buckle is clamped into the clamping groove is provided at a position corresponding to the receiving groove on the second side of the second housing. The installation portion has a convex platform limited in the secondary receiving groove to play a certain limiting role on the installation portion and prevent the second housing from sagging due to deformation.

[0012] Further, the assembly cavity includes a first cavity section formed in the first housing and penetrating the first side, and a second cavity section formed in the second housing and penetrating the second side. A first insertion opening and a second insertion opening communicating with the first cavity section are respectively formed on the second side of the first housing. The first insertion opening is disposed opposite to the second end of the elastic piece along the insertion direction. One end of the handle penetrates into the first cavity section and the other end penetrates out of the second insertion opening along the insertion direction, so as to facilitate the fixation of the conductive element between the elastic piece and the conductive terminal by controlling the handle; the conductive terminal includes a first insertion end for connecting with the conductive element and a second insertion end for docking with a complementary terminal. The first insertion end is installed in the first cavity section, the second insertion end is installed in the second cavity section, and the first side wall and the second side wall are located on the first insertion end, so as to facilitate the installation of the conductive terminal.

[0013] Further, the first insertion end includes a substrate, and the first side wall and the second side wall formed by stamping and bending from both sides of the substrate; a limiting plate located between the two ends of the elastic piece is formed by stamping and bending on one side of the substrate close to the first side wall, so as to prevent the elastic piece from being excessively bent after being squeezed by the handle and affecting its service life.

[0014] Further, the second insertion end includes a third side wall bent from the side of the substrate away from the first insertion opening, a first elastic arm extending along the insertion direction after being bent from the third side wall, a fourth side wall in an L shape bent from the first elastic arm, and a second elastic arm bent from the fourth side wall and extending in a mirror image distribution relative to the first elastic arm. A fitting space for the docking terminal to be inserted therein and facing the third insertion opening is provided between the first elastic arm and the second elastic arm, so as to be inserted and fitted with the docking terminal to realize circuit conduction.

[0015] The pluggable terminal block of the present utility model has at least the following beneficial effects: by limiting the first end of the elastic piece to the first side wall of the conductive terminal, the connection between the elastic piece and the conductive terminal is made tighter, thereby preventing the first end of the elastic piece from moving and affecting the normal use of the terminal assembly. The handle cooperates with the elastic piece to realize the installation and disassembly of the conductive element, so as to improve the safety and service life to a certain extent and avoid the device failure affecting the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of another angle of the present utility model;

[0019] Figure 3 is a side cross-sectional view of the present utility model;

[0020] Figure 4 is an exploded view of the present utility model;

[0021] Figure 5 is a schematic diagram of the cooperation between the terminal assembly and the handle of the present utility model;

[0022] Figure 6 is a side cross-sectional view of the first housing of the present utility model;

[0023] Figure 7 is a schematic structural diagram of the first housing of the present utility model;

[0024] Figure 8 is a side cross-sectional view of the present utility model.

[0025] The meanings of the reference numerals in the drawings are as follows:

[0026] Outer housing - 1; Assembly cavity - 11; First cavity section - 111; Limiting inclined surface - 1111; Second cavity section - 112; First insertion port - 121; Second insertion port - 122; Third insertion port - 123; First housing 13; Column partition - 131; Row partition 132; Extension platform - 133; Bolt - 134; Card slot - 135; Oblique cutting slot - 136; Enclosing edge - 137; Accommodating groove - 138; Secondary accommodating groove - 139; Second housing - 14; Connection part - 141; Column interval space - 142; Row interval space - 143; Protruding structure - 144; Snap - 145; Insert block - 146; Boss - 147; Terminal assembly - 2; Conductive terminal - 21; First insertion end - 21a; Second insertion end - 21b; First side wall - 211; Second side wall - 212; Substrate - 213; Limiting plate - 214; Limiting part - 215; Stamping block - 216; Fold angle - 2161; Third side wall - 217; First elastic arm 2181; Fourth side wall - 2182; Second elastic arm - 2183; Elastic piece - 22; First end - 221; Second end - 222; Connection section - 223; Handle - 3; First side 41; Second side - 42. Detailed implementation manners

[0027] The present utility model will be further described below with reference to the drawings.

[0028] As Figures 1 to 8As shown in the figure, the pluggable terminal block of the present utility model includes a housing 1 made of plastic, a terminal assembly 2 disposed inside the housing 1, and a handle 3 movably inserted on the housing 1. The housing 1 is used to support and protect the terminal assembly 2, and the handle 3 is used to control the terminal assembly 2 so that the terminal assembly 2 can be used to fix or remove a conductive element. The terminal assembly 2 is used to connect to a docking terminal after being connected to the conductive element for realizing the transmission of electrical signals.

[0029] In this embodiment, the housing 1 is injection-molded from plastic. An assembly cavity 11 is formed inside the housing 1. Both the terminal assembly 2 and the handle 3 are installed in the assembly cavity 11 so that the housing 1 can protect the terminal assembly 2 and the handle 3. The housing 1 has a first side 41 and a second side 42 that are opposite to each other and distributed along a plugging direction. A first insertion opening 121 and a second insertion opening 122 that are both communicated with the assembly cavity 11 along the plugging direction are respectively formed on the second side 42 of the housing 1. The first insertion opening 121 is used for a conductive element such as a cable to penetrate into the assembly cavity 11 to contact the terminal assembly 2. One end of the handle 3 penetrates into the first insertion opening 121, and the other end of the handle 3 penetrates out of the second insertion opening 122 along the plugging direction. The handle 3 can move towards the inside of the assembly cavity 11 along the plugging direction so that the conductive element can penetrate into the terminal assembly 2 or the conductive element fixed by the terminal assembly 2 can be separated from the terminal assembly 2. The handle 3 can also move towards the outside of the assembly cavity 11 along the plugging direction so that the terminal assembly 2 clamps the conductive element or resets. Among them, after the handle 3 moves outwards, if the conductive element is located inside the terminal assembly 2, the conductive element is clamped; if there is no conductive element inside the terminal assembly 2, the terminal assembly 2 resets. A third insertion opening 123 that is communicated with the assembly cavity 11 along the plugging direction is formed on the first side 41 of the housing 1. The third insertion opening 123 is used for a docking terminal to penetrate into it so that the docking terminal can penetrate into the assembly cavity 11 to be inserted into the terminal assembly 2 to realize the connection and transmission of electrical signals.

[0030] In the content defined in this embodiment, the outer shell 1 includes a first shell 13 and a second shell 14. The assembly cavity 11 is formed by enclosing a cavity structure jointly opened inside the first shell 13 and the second shell 14. The cavity structure inside the first shell 13 is defined as the first cavity section 111. The first cavity section 111 penetrates through the first side 41 of the first shell 13 and is provided with an open end facing the second shell 14, so as to facilitate the installation of the terminal assembly 2 and the handle 3 into the first cavity section 111 through the first side 41 of the first shell 13. The cavity structure inside the second shell 14 is defined as the second cavity section 112. The second cavity section 112 penetrates through the second side 42 of the second shell 14 and is provided with an open end facing the first shell 13. After the first shell 13 and the second shell 14 are installed and connected, the first cavity section 111 and the second cavity section 112 jointly enclose and form the assembly cavity 11. The first insertion opening 121 and the second insertion opening 122 are respectively opened on the second side 42 of the first shell 13, so that the conductive element and the handle 3 do not interfere with the connection between the first shell 13 and the second shell 14. At the same time, the second side 42 of the first shell 13 can limit the terminal assembly 2 and the handle 3 to prevent the terminal assembly 2 and the handle 3 from falling off. The third insertion opening 123 is opened on the first side 41 of the second shell 14, so that the terminal assembly 2 can enter the second cavity section 112 and the second side 42 of the second shell 14 can limit the terminal assembly 2 from falling off, and at the same time, it allows the docking terminal to penetrate into the second cavity section 112.

[0031] In the content defined in this embodiment, the pluggable terminal block of the present utility model is usually a double-row terminal structure. Therefore, a rectangular first accommodation cavity is formed on the first side 41 of the first housing 13 along the insertion direction. In the first accommodation cavity, a column partition 131 arranged along the column direction and several row partitions 132 arranged at equal intervals along the row direction perpendicular to the column direction are integrally injection-molded. Each row partition 132 and the column partition 131 divide the accommodation cavity into two rows of first cavity segments 111 arranged in a rectangular array. Each first cavity segment 111 corresponds to a terminal assembly 2 and a handle 3 respectively, and the shapes and sizes of all the first cavity segments 111 are the same. The first insertion port 121 and the second insertion port 122 are respectively opened corresponding to each first cavity segment 111 one by one. To facilitate the installation between the first housing 13 and the second housing 14, on the first side 41 of the first housing 13, a surrounding edge 137 is formed by extending from each outer side (i.e., the outermost side of the first housing 13 in the row direction and the column direction) along the insertion direction towards the second housing 14 side. The surrounding edge 137 protrudes more than each row partition 132 and the column partition 131. Glue-reducing grooves are respectively formed at both ends of the first housing 13 along the column direction. Each first cavity segment 111 is located between the two side glue-reducing grooves, and the glue-reducing grooves are also located inside the surrounding edge. To facilitate the connection between the first housing 13 and the docking terminal block or the circuit board, extension platforms 133 are formed on the outer walls on both sides of the first housing 13 along the column direction by extending back along the column direction. Threaded holes are formed in the extension platforms 133 along the insertion direction, and bolts 134 are screwed at the threaded holes for connecting to the docking terminal or the circuit board by means of threaded connection.

[0032] In the content defined by this embodiment, on the second side 42 of the second housing 14, two rows of second cavity segments 112 arranged in a rectangular array are respectively opened at positions corresponding to the respective first cavity segments 111 along the insertion direction, so that after one end of each terminal assembly 2 penetrates into the first cavity segment 111, the other end of each terminal assembly 2 penetrates into each second cavity segment 112. In order to increase the connection stability between the first housing 13 and the first housing 13, a connection portion 141 whose width and length are respectively adapted to the width and length of the inner cavity of the surrounding edge is integrally formed on the first side 41 of the second housing 14. Each second cavity segment 112 penetrates through the connection portion 141 toward the first housing 13 along the insertion direction, so that the terminal assembly 2 can penetrate into the second cavity segment 112. Column spacing spaces 142 for separating the connection portion 141 into two columns and row spacing spaces 143 for separating the connection portion 141 into multiple rows are respectively opened at positions corresponding to the respective row partitions 132 and column partitions 131 on the connection portion 141, so that each connection portion 141 is separated into a plurality of block-shaped protruding structures 144. During installation, each protruding structure 144 penetrates into the corresponding first cavity segment 111 to increase the contact cross-section between the second housing 14 and the first cavity segment 111, and can effectively improve the connection stability and firmness after the first housing 13 and the second housing 14 are connected.

[0033] In this embodiment, the first housing 13 and the second housing 14 are detachably connected. A clamping groove 135 is provided on the surrounding edge 137 on the first side 41 of the first housing 13, and a clamping buckle 145 protruding for insertion into the clamping groove 135 is provided on the corresponding protruding structure 144 of the second housing 14. When the protruding structure 144 passes through the inside of the surrounding edge 137 and penetrates into the first cavity section 111, the clamping buckle 145 on the second housing 14 gradually approaches the clamping groove 135 until the clamping buckle 145 is snapped into the clamping groove 135 to complete the installation between the first housing 13 and the second housing 14. Specifically, the clamping grooves 135 are formed on both sides of the first housing 13 along the row direction and are arranged at intervals in multiple numbers. Each clamping groove 135 penetrates the first housing 13 outward from the inner wall of the corresponding first cavity section 111 along the row direction. The clamping buckles 145 are formed on the outer sides of the respective protruding structures 144 corresponding to the clamping grooves 135 along the row direction. Preferably, in order to avoid the problem of difficult installation caused by misalignment between the clamping groove 135 and the clamping buckle 145 during installation, each clamping buckle 145 has a first guiding inclined surface that is inclined from the side close to the first housing 13 toward the second side 42 from the inside to the outside, so that the side of each clamping buckle 145 close to the first housing 13 is narrow and the side far from the first housing 13 is wide. During installation, the first guiding inclined surface enables the clamping buckle 145 to quickly slide into the surrounding edge 137. At the positions corresponding to the clamping buckles 145 on the surrounding edge 137, inclined cutting grooves 136 inclined toward the first cavity are formed. The inclined cutting grooves 136 have a second guiding inclined surface parallel to the first guiding inclined surface, and the width of the inclined cutting grooves 136 is slightly larger than the width of the clamping buckles 145, that is, the difference between the width of the clamping buckles 145 and the width of the inclined cutting grooves 136 is about 1 mm. Through the cooperation between the first guiding inclined surface and the second guiding inclined surface, the clamping buckle 145 can be guided when the clamping buckle 145 approaches the first housing 13, and the position of the clamping buckle 145 is corrected so that the position of the second housing 14 relative to the first housing 13 does not shift. At the same time, the straight ends on the surrounding edge are reduced, and when the second housing 14 is pressed into the first housing 13, the interference amount between the clamping buckle 145 and the first housing 13 is reduced, which is beneficial to assembly.

[0034] In this embodiment, in order to prevent the protruding structure 144 from affecting the installation of the terminal assembly 2 in the first cavity section 111, the height of the protruding structure 144 in the insertion direction is limited. And in order to make the entire connecting portion 141 be able to penetrate inside the surrounding edge 137 for a closer connection with the first housing 13. To prevent the entire second housing 14 from being overly recessed, and also to prevent the second housing 14 from being deformed and sunken due to the heat generated by the terminal assembly 2 during long-term use, a receiving groove 138 is recessed on the first side 41 of the first housing 13, and a secondary receiving groove 139 that communicates with the receiving groove 138 and forms a stepped cavity with the receiving groove 138. The receiving groove 138 is provided with two and is disposed at both end positions of the first housing 13 along the column direction. Both receiving grooves 138 are recessed along the insertion direction and are located inside the surrounding edge 137. The secondary receiving groove 139 is also provided with two and is opened on the two extending portions and is located outside the sides opposite to the two receiving grooves 138. One side surface of this receiving groove 138 facing the receiving groove 138 penetrates the surrounding edge 137 and communicates with the surrounding edge 137. The groove depth of the secondary receiving groove 139 in the insertion direction is less than the groove depth of the receiving groove 138. Therefore, a step is formed between the receiving groove 138 and the secondary receiving groove 139. At positions corresponding to the receiving grooves 138 on the second side 42 of the second housing 14, there are formed insertion portions, namely a plug 146, that extend along the insertion direction. When the buckle 145 is snapped into the card slot 135, the plug 146 penetrates into the receiving groove 138. On the side of the plug 146 away from the protruding structure 144 along the column direction, there is a boss 147 that is limited in the secondary receiving groove 139. The length of the boss 147 in the insertion direction is less than the length of the plug 146 in the insertion direction. And when the plug 146 is inserted into the receiving groove 138, the boss 147 penetrates through this receiving groove 138, and the boss 147 abuts against the inner wall of the receiving groove 138 on the side facing the first side 41 along the insertion direction, so that the secondary receiving groove 139 can hold the second housing 14 when the second housing 14 is deformed and prevent it from being sunken.

[0035] In this embodiment, the terminal assembly 2 includes a conductive terminal 21 installed in the assembly cavity 11 and a spring piece 22 installed in the assembly cavity 11. The conductive terminal 21 is used for transmitting electrical signals after connecting the conductive element and the docking terminal, and the spring piece 22 is used to cooperate with the conductive terminal 21 to clamp or loosen the conductive element.

[0036] Among the contents defined in this embodiment, the conductive terminal 21 has opposite first side wall 211 and second side wall 212. The elastic piece 22 is made of an elastic material with resilience, such as carbon steel. The elastic piece 22 is formed into a V-shaped structure by bending an arc in the middle of a strip-shaped material, so that the elastic piece 22 has two ends which are respectively defined as a first end 221 and a second end 222. The first side wall 211 is used to cooperate with the first end 221 of the elastic piece 22 to limit the first end 221 of the elastic piece 22. The second side wall 212 is used for the second end 222 of the elastic piece 22 to abut or be close to, so as to realize the fixation of the conductive element through the cooperation between the second end 222 of the elastic piece 22 and the second side wall 212. The conductive terminal 21 includes a first insertion end 21a for connecting with the conductive element and a second insertion end 21b for docking with the complementary terminal. The first insertion end 21a is installed in the first cavity section 111, and the second insertion end 21b is installed in the second cavity section 112. The first side wall 211 and the second side wall 212 are located on the first insertion end 21a. The first insertion opening 121 is arranged directly opposite to the second end 222 of the elastic piece 22 along the insertion direction, so that after the conductive element passes through the first insertion opening 121, it can be connected to the conductive terminal 21 close to the space between the second end 222 of the elastic piece 22 and the second side wall 212. In this embodiment, the first insertion end 21a includes a substrate 213, and the first side wall 211 and the second side wall 212 formed by stamping and bending from both sides of the substrate 213, so as to form a U-shaped structure among the substrate 213, the first side wall 211 and the second side wall 42. The width of the substrate 213 and the widths of the first side wall 211 and the second side wall 212 respectively match the length and width of the first cavity section 111, so that the first insertion end 21a will not be too loose after being installed in the first cavity section 111, and the first side wall 211 and the second side wall 212 can respectively abut against the corresponding inner walls of the first cavity section 111 to ensure the stability between the first insertion end 21a and the first housing 13. Preferably, a limiting plate 214 located between the two ends of the elastic piece 22 is formed by stamping and bending on one side of the substrate 213 close to the first side wall 211. The limiting plate 214 is formed by stamping and dividing and bending from the substrate 213 and is arranged parallel to the first side wall 211 and the second side wall 212. When the elastic piece 22 is installed, it is located between the first side wall 211 and the second side wall 212. The handle 3 can squeeze the second end 222 of the elastic piece 22 to make the second end 222 of the elastic piece 22 swing towards the first end 221. If the second end 222 is squeezed excessively, the elastic piece 22 may be damaged and its service life may be reduced, and even the resilience of the second end 222 of the elastic piece 22 may be affected. The limiting plate 214 can limit the swing angle of the second end 222 and prevent the second end 222 of the elastic piece 22 from being excessively bent and deformed. In order to improve the stability of the terminal, the first side 41 plate abuts against the protruding structure 144 after the second housing 14 and the first housing 13 are installed.

[0037] To prevent the position of the elastic piece 22 from shifting after being squeezed by the handle 3 and affecting its use, a limiting portion 215 is formed on the first sidewall 211. The first end 221 of the elastic piece 22 is connected to the first sidewall 211 through the limiting portion 215, so that the first end 221 of the elastic piece 22 will not move when subjected to the force of the handle 3 along the insertion direction, ensuring the cooperation between the elastic piece 22 and the conductive terminal 21. In the content defined in this embodiment, the limiting portion 215 includes a convex hull formed by stamping and protruding inward from the first sidewall 211. The convex hull can be set to at least two and is distributed in a rectangular array, and the convex hull protrudes toward the second sidewall 212. A connecting section 223 parallel to and fitting the first sidewall 211 is provided on the first end 221 of the elastic piece 22. A perforation for the convex hull to be clamped therein to limit the first end 221 is provided at a position corresponding to the convex hull on the connecting section 223. The convex hull and the perforation limit the first end 221 of the elastic piece 22 by riveting. Under the action of its own elastic force, the elastic piece 22 is relative to the axial direction of the convex hull, the connecting section 223 presses against the first sidewall 211, and the convex hull restricts the movement of the first end 221 of the elastic piece 22 in the radial direction of the convex hull, thus effectively preventing the displacement of the elastic piece 22 and ensuring the use safety and stability of the entire terminal block.

[0038] In this embodiment, a clamping opening is formed between the second end 222 of the terminal and the second sidewall 212. When the handle 3 moves inward and squeezes the second end 222 of the elastic piece 22, the second end 222 of the elastic piece 22 moves away from the second sidewall 212 to open the clamping opening. When the handle 3 moves outward, a stamping block 216 is formed by stamping and dividing inward on the second sidewall 212. The stamping block 216 is connected to the second sidewall 212 on the side away from the second insertion end 21b along the insertion direction. The other sides of the stamping block 216 are all separated from the second sidewall 212. The side of the stamping block 216 close to the second insertion end 21b inclines inward and away from the second end 222 of the elastic piece 22, so as to form a fold angle 2161 between the stamping block 216 and the second sidewall 212. A clamping opening for clamping the conductive element is formed between the second end 222 of the elastic piece 22 and the fold angle 2161, so that when the conductive element penetrates into the clamping opening and is pressed against the stamping block by the second end 222 of the elastic piece 22, the pressing force is increased, the conductive element is not easy to slip, and the connection is reliable.

[0039] In the content defined in this embodiment, the second plug-in end 21b includes a third side wall 217 bent and extended from the side of the base plate 213 away from the first insertion port 121, a first elastic arm 2181 bent from the third side wall 217 and extending along the plug-in direction, an L-shaped fourth side wall 2182 bent from the upper edge of the first elastic arm 2181, and a second elastic arm 2183 bent from the fourth side wall 2182 and extending in a mirror-image distribution relative to the first elastic arm 2181. There is a matching space between the first elastic arm 2181 and the second elastic arm 2183 for the docking terminal to be plugged into and facing the third insertion port 123. After being inserted into the second cavity section 112, the first elastic arm 2181 and the second elastic arm 2183 are used to press against the inner wall of the second cavity section 112 to ensure the firmness of the connection between the second plug-in end 21b and the second shell 14. The first elastic arm 2181 and the second elastic arm 2183 each include a first elastic section extending obliquely from the fourth side wall 2182 toward the side away from the third side wall 217, and a second elastic section that bends inward from the first elastic section and continues to extend outward in a reverse direction. The second elastic section is in a V-shaped structure with an inflection point facing inward to form a contact point for squeezing the docking terminal, and the two second elastic sections are wide-mouthed at one end away from the first elastic section to facilitate the docking terminal to penetrate into the contact point. The first elastic arm 2181 and the second elastic arm 2183 are pressed against the docking terminal by their elastic properties to complete the plugging and unplugging of the docking terminals. The width of the third insertion port 123 on the second shell 14 is smaller than the maximum spacing between the two second elastic sections to prevent the docking terminal from penetrating outside the two second elastic arms 2183.

[0040] The second insertion opening 122 enables the handle 3 to move in the first housing 13 along the insertion direction. One end of the handle 3 penetrates into the first cavity section 111 and is arranged obliquely relative to the other end. A limiting inclined surface 1111 adapted to one end of the handle 3 penetrating into the first cavity section 111 is formed on the inner wall of one side of the first cavity section 111 close to the second side 42. The handle 3 is provided with an inclined surface parallel to the limiting inclined surface 1111. The cooperation between the inclined surface and the limiting inclined surface 1111 realizes the unidirectional limiting of the handle 3 and prevents the handle 3 from being separated from the first housing 13. One end of the handle 3 penetrating into the first cavity section 111 is pressed against the limiting inclined surface 1111 by the second end 222 of the spring sheet 22, while the other end of the handle 3 extends along the insertion direction and passes out of the second insertion opening 122. When the handle 3 is moved along the plugging direction toward the first cavity section 111, the handle 3 pushes the second end 222 of the spring sheet 22 along the first direction to make the second end 222 of the spring sheet 22 move away from the second side wall 212 and open the clamp, thereby blocking the second end 222 of the spring sheet 22 and the second side wall 212 from fixing the conductive element. The handle 3 is pushed in the opposite direction of the first direction to make the second end 222 of the spring sheet 22 rebound and push the handle 3 toward the outside of the second insertion port 122, so that the second end 222 of the spring sheet 22 abuts against or approaches the folded corner 2161 to close the clamp, and the conductive element is fixed or reset.

[0041] The working mode of one embodiment of the pluggable terminal block of the present utility model is as follows: Connect the first end 221 of the elastic piece 22 to the first side wall 211 through a convex hull, make the second end 222 of the elastic piece 22 abut against the second side wall 212, then install the handle 3 into the first cavity section 111 until one end passes out of the second insertion port 122, insert the first insertion end 21a of the conductive terminal 21 into the first cavity section 111, connect the second housing 14 through the cooperation of the buckle 145 and the card slot 135, make the second insertion end 21b penetrate into the second cavity section 112, then connect the conductive element to the conductive terminal 21 by pushing the handle 3, and insert the docking terminal into the conductive terminal 21 in an opposing manner, thereby completing the assembly.

Claims

1. A pluggable terminal block, characterized in that: include: outer shell; A terminal assembly, which is configured to include a conductive terminal and a spring, wherein the conductive terminal has a first side wall and a second side wall opposite to each other, a first end of the spring is limited to the first side wall, and a second end of the spring is elastically abutted against or close to the second side wall; and A handle is movably inserted on the outer shell, and the handle is unidirectionally limited by the outer shell to prevent it from detaching from the outer shell; the handle is pushed along a first direction to deform the spring sheet so that the second end of the spring sheet is away from the second side wall, and the handle is pushed in the opposite direction of the first direction to make the spring sheet elastically recover and make the second end of the spring sheet abut against or close to the second side wall.

2. The pluggable terminal block according to claim 1, characterized in that: A limiting portion is formed on the first side wall, and the first end of the elastic sheet is connected to the first side wall through the limiting portion.

3. The pluggable terminal block according to claim 2, characterized in that: The limiting portion includes a convex bump stamped inward from the first side wall, and a connecting section parallel to and attached to the first side wall is provided on the first end of the spring sheet. A hole is provided on the connecting section at a position corresponding to the convex bump for the convex bump to be clamped therein to limit the perforation of the first end.

4. The pluggable terminal block according to any one of claims 1 to 3, characterized in that: A punching block is formed by punching and splitting inwardly on the second side wall. The punching block is inclined inwardly and toward a side away from the second end of the spring sheet to form an angle with the second side wall. A clamping opening for clamping the conductive element is formed between the second end of the spring sheet and the angle.

5. The pluggable terminal block according to claim 1, characterized in that: The outer shell includes a first shell and a second shell, and an assembly cavity is formed together in the first shell and the second shell, and the conductive terminal, the spring sheet and one end of the handle are all installed in the assembly cavity; a card slot is formed on the first shell, and a buckle is formed on the second shell at a position corresponding to the card slot to connect the first shell and the second shell.

6. The pluggable terminal block according to claim 5, characterized in that: An oblique groove inclined toward the assembly cavity is formed on the first side of the first shell and at a position corresponding to the buckle. The oblique groove is used to position and guide the buckle when it approaches the first shell.

7. The pluggable terminal block according to claim 5, characterized in that: A receiving groove and a secondary receiving groove connected to the receiving groove and forming a stepped cavity with the receiving groove are recessed on the first side of the first shell, and an installation portion that penetrates into the receiving groove when the clip is inserted into the slot is provided at a position corresponding to the receiving groove on the second side of the second shell, and the installation portion has a boss limited in the secondary receiving groove.

8. The pluggable terminal block according to claim 5, characterized in that: The assembly cavity includes a first cavity section formed in the first shell and passing through the first side, and a second cavity section formed in the second shell and passing through the second side. A first insertion opening and a second insertion opening communicating with the first cavity section are respectively provided on the second side of the first shell. The first insertion opening is arranged opposite to the second end of the spring piece along the insertion direction. One end of the handle penetrates into the first cavity section and the other end penetrates out of the second insertion opening along the insertion direction. The conductive terminal includes a first plug-in end for connecting to a conductive element and a second plug-in end for docking with a complementary terminal. The first plug-in end is installed in a first cavity section, the second plug-in end is installed in a second cavity section, and the first side wall and the second side wall are located on the first plug-in end.

9. The pluggable terminal block according to claim 8, characterized in that: The first plug-in end includes a base plate and the first side wall and the second side wall formed by stamping and bending from both sides of the base plate; a limiting plate located between the two ends of the spring sheet is stamped and bent on one side of the base plate close to the first side wall.

10. The pluggable terminal block according to claim 9, characterized in that: The second plug-in end includes a third side wall bent from the substrate away from the first plug-in port, a first elastic arm bent from the third side wall and extending along the plug-in direction, a fourth side wall bent from the upper edge of the first elastic arm in an L-shape, and a second elastic arm bent from the fourth side wall and extending in a mirror-image distribution relative to the first elastic arm, and a matching space is provided between the first elastic arm and the second elastic arm for the docking terminal to be plugged into and facing the third plug-in port.

Images