Spring type wiring connector

Abstract

The utility model relates to the technical field of connectors, and discloses a spring type wiring connector, which comprises a plastic shell, a terminal assembly and a button, the terminal assembly and the button are arranged in the plastic shell, the terminal assembly comprises a conductive terminal and an elastic sheet, and the conductive terminal comprises a contact part and a weld leg formed by extending from the contact part. The elastic sheet comprises a supporting end which is supported in the shell or the conductive terminal and at least two elastic arms which are formed by bending and extending from the supporting end and elastically abut against the contact part and the lower part of the button. Through cooperative use of the plastic shell, the terminal assembly and the button, installation clamping or contact clamping of a connected object is completed when the button is pressed, through arrangement of the at least two elastic arms on the elastic sheet, more than double clamping forces are achieved when the elastic sheet is used for clamping the connected object, firmness is improved, and meanwhile, the clamping effect is improved. And when any elastic arm fails, the connected object cannot be loosened, so that the use safety is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and particularly relates to a spring type wire connector. Background Art

[0002] A wire connector is a fitting product used to achieve electrical connection and is widely used in various electronic devices and systems. Its main function is to transmit electrical signals or conduct electricity. It is classified into copper silver plating, copper zinc plating, copper, aluminum, iron, etc. from the material aspect. The types include single-hole, double-hole, socket, hook, etc. and are classified into the category of connectors in industry.

[0003] A spring type wire connector is a wire connector that uses the spring principle to achieve a stable connection of wires. It is widely used in fields such as electric power, electronics, and communication, such as lighting, elevator lifting control, instruments, power supplies, chemistry, and automotive power. The spring type terminal clamps the wire on the terminal through the elastic deformation of the spring to ensure the stability and reliability of the electrical connection. Its advantages include convenient installation, strong detachability, wide application range, etc.

[0004] In the existing spring type wire connectors, the elastic extrusion between one end of the elastic piece and the conductive terminal is used to clamp the connection object such as a wire. However, since it is achieved through the elastic performance of the spring itself, the clamping force of a single elastic clamping is relatively poor, which may lead to an insecure connection, easy loosening, and affect the connection firmness. Summary of the Utility Model

[0005] Aiming at the deficiencies of the above-mentioned existing technologies, the technical problem to be solved by the utility model is: to provide a spring type wire connector to solve the problem of poor clamping effect on the connection object by one end of a spring and a conductive terminal in the existing technology.

[0006] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a spring type wire connector, which includes a plastic housing, a terminal assembly arranged in the plastic housing, and a button that is limited and installed on the plastic housing along a pressing direction. The characteristics are as follows: the terminal assembly includes a conductive terminal and an elastic piece. The conductive terminal includes a contact part and a welding leg extending from the contact part. The elastic piece includes a supporting end supported in the plastic housing or the conductive terminal and at least two elastic arms bent and extended from the supporting end and elastically abutted against the contact part and below the button. When the button is pressed along the pressing direction, the elastic arms are far away from the contact part. In the working state, a connection object is clamped between the contact part and the elastic arms. By increasing the number of elastic arms, the clamping force on the connection object can be increased. At the same time, when any one of the elastic arms is deformed and loses the ability to clamp the connection object, the other elastic arms can still clamp the connection object to improve the service life.

[0007] Furthermore, the conductive terminal further includes a conducting portion integrally formed with the contact portion and oppositely arranged to support on the plastic housing, and the solder leg extends from the conducting portion; the elastic sheet includes a first wall segment arranged parallel and attached to the conducting portion, a first bending segment bent from one end of the first wall segment toward the contact portion side, a second wall segment extending from the first bending segment toward the contact portion side and abutting against the contact portion and the button, a second bending segment bent from the other end of the first wall segment toward the contact portion side, and a third wall segment extending from the second bending segment toward the contact portion side and abutting against the contact portion and the button. The first wall segment is defined as the supporting end, and both the second wall segment and the third wall segment are defined as the elastic arms, so as to form two elastic arms by bending at both ends, realizing double clamping of the connected object and improving the clamping force.

[0008] Furthermore, the second bending segment includes a third bending segment bent from the first wall segment, a fourth wall segment extending from the third bending segment toward the contact portion, a fourth bending segment bent from the fourth wall segment toward the first bending segment side, a fifth wall segment extending from the fourth bending segment toward the first bending segment, and a fifth bending segment bent from the fifth wall segment toward the contact portion. The third wall segment extends from the fifth bending segment to increase the length of the second bending segment and avoid yielding of the elastic sheet.

[0009] Furthermore, the button and the conductive terminal are distributed in a first direction perpendicular to the pressing direction. The elastic arm has a first abutting end for elastically abutting against the contact portion and a second abutting end independently spaced from the first abutting end and for elastically abutting against the button, so as to cooperate with the contact portion and the button respectively, avoiding interference and affecting the clamping effect on the connected object.

[0010] Furthermore, a convex bump protruding toward the conducting portion is stamped on the supporting end, and a through hole for the convex bump to pass through and be riveted therein is formed at a position corresponding to the convex bump on the conducting portion, so as to limit the movement of the supporting end through the cooperation between the convex bump and the through hole, making the connection between the elastic sheet and the conductive terminal more stable.

[0011] Furthermore, the plastic housing includes a main body and a bottom cover. An installation cavity penetrating the first surface of the main body along the pressing direction is formed on the main body. The bottom cover is detachably connected to the first surface of the main body to block the opening side of the installation cavity. A convex strip protrudes toward the main body side on the bottom cover, and a groove for the convex strip to penetrate therein is recessed at a position corresponding to the convex strip on the first surface of the main body, so as to facilitate the positioning between the main body and the bottom cover; the conductive terminal has a mating conductive end installed in the installation cavity and tightly fitted with the inner wall of the installation cavity, and a welding end extending out of the plastic housing by movably passing through the bottom cover from the mating conductive end. The conducting portion and the contact portion are both formed on the mating conductive end, so as to facilitate the installation and cooperation of the conductive terminal, the elastic sheet and the button.

[0012] Furthermore, extension parts are formed on opposite sides of the bottom cover and extend towards the main body along the pressing direction. A limiting through groove is formed through the extension parts. At positions on the main body corresponding to the two extension parts, limiting grooves are formed through along the pressing direction for the extension parts to pass through. On the inner wall of the limiting groove, a clamping block is convexly provided for clamping into the limiting groove when the bottom cover seals the opening side of the installation cavity, so as to realize the detachable connection between the bottom cover and the main body.

[0013] Furthermore, on the second surface of the main body adjacent to the first surface, a first insertion opening communicating with the installation cavity is formed along a second direction. Each elastic arm is inclined away from the first insertion opening relative to the contact part, and a clamping opening for clamping the connection object is formed between each elastic arm and the contact part. The button moves to open or close the clamping opening by cooperating with the second abutting end, so as to enable the connection object to penetrate therein and clamp or loosen the connection object, and complete the on-off between the connection object and the conductive terminal.

[0014] Furthermore, the button includes a pressing block and a guiding block fixedly connected to the pressing block. The opposite sides of the guiding block extend along the second direction and protrude outward from the pressing block; on the third surface of the main body corresponding to the first surface, a second insertion opening communicating with the installation cavity is formed along the pressing direction. The pressing block movably penetrates through the second insertion opening along the pressing direction. On both inner walls of the second insertion opening corresponding to the parts where the guiding block protrudes outward from the pressing block, sliding grooves are recessed for it to slide through. The second abutting end extends into the second insertion opening along the first direction to elastically abut against one side surface of the pressing block facing the installation cavity, so that the pressing block can slide through the main body along the pressing direction, and the cooperation between the first abutting end and the contact part is realized by squeezing the second abutting end.

[0015] Furthermore, two baffles are convexly provided on the bottom cover and are distributed at intervals along the first direction. A guiding space is formed between the two baffles for the guiding block to always penetrate through along the pressing direction, so as to prevent the button from tipping over and affecting the cooperation with the second abutting end.

[0016] The spring-type wiring connector of the present utility model has at least the following beneficial effects: through the combined use of the plastic shell, the terminal assembly and the button, the installation, clamping or disassembly of the connection object is completed when the button is pressed. By providing at least two elastic arms on the elastic sheet, more than double clamping force can be realized when clamping the connection object. While improving the firmness, the connection object will not become loose when any one of the elastic arms fails, thus ensuring the use safety and prolonging the service life. Description of the Drawings

[0017] The accompanying drawings described herein are used to provide a further understanding of the present application and form 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:

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Figure 2 is a side sectional view of the present utility model relative to the elastic piece along the second direction;

[0020] Figure 3 is a side sectional view of the present utility model relative to the button along the second direction;

[0021] Figure 4 is a side front sectional view of the present utility model;

[0022] Figure 5 is an exploded view of the present utility model;

[0023] Figure 6 is an exploded view of the present utility model from another angle;

[0024] Figure 7 is a schematic structural view of the elastic piece of the present utility model.

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

[0026] Plastic housing - 1; Main body - 11; Groove - 111; Limit groove - 112; Clamping block - 113; Bottom cover - 12; Rib - 121; Extension part - 122; Limit through - groove - 123; Through - hole - 124; Baffle - 125; Installation cavity - 13; Sub - cavity - 131; First surface - 141; Second surface - 142; Third surface - 143; First insertion port - 15; Second insertion port - 16; Slide groove - 161; Open - ended groove - 18; Terminal assembly - 2; Conductive terminal - 21; Matching conductive end - 21a; Welding end - 21b; Conductive connection part - 211; Contact part - 212; Substrate - 213; Protruding part - 214; Perforation - 215; Elastic piece - 22; Support end - 22a; Elastic arm - 22b; First wall section - 221; First bending section - 222; Second wall section - 223; Second bending section - 224; Third bending section - 2241; Fourth wall section - 2242; Fourth bending section - 2243; Fifth wall section - 2244; Fifth bending section - 2245; First abutting end - 2246; Second abutting end - 2247; Third wall section - 225; Convex bump - 226; Button - 3; Pressing block - 31; Guide block - 32. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with the accompanying drawings.

[0028] As shown Figures 1 to 7 in the figure, the spring - type wiring connector of the present utility model includes a plastic housing 1, a terminal assembly 2 disposed within the plastic housing 1, and a button 3 that is mounted on the plastic housing 1 in a limited manner along a pressing direction by the plastic housing 1. The plastic housing 1 supports and protects the terminal assembly 2, and the button 3 cooperates with the terminal assembly 2 to respectively make and break connections with a connection object and a circuit board, thereby realizing the transmission of electrical signals.

[0029] In this embodiment, the plastic housing 1 is injection - molded from plastic for insulation to protect the terminal assembly 2. The plastic housing 1 includes a main body 11 and a bottom cover 12. The main body 11 and the bottom cover 12 are independently injection - molded. An installation cavity 13 is formed on the first surface 141 of the main body 11 and penetrates the main body 11 along the pressing direction. The terminal assembly 2 is installed in the installation cavity 13 from the opening side of the installation cavity 13. The button 3 is installed on the main body 11 and one end extends into the installation cavity 13 to cooperate with the terminal assembly 2. The bottom cover 12 is detachably connected to the main body 11 to block the installation cavity 13 after the terminal assembly 2 is installed in the installation cavity 13, thereby facilitating the installation and disassembly of the terminal assembly 2 and also facilitating the demolding of the plastic housing 1.

[0030] In the content defined by this embodiment, the main body 11 has a cuboid or cube structure with six faces. For the convenience of understanding this structure, among the six faces of the main body 11, there are a first surface 141, a second surface 142 adjacent to the first surface 141, and a third surface 143 opposite to the first surface 141. The height direction of the main body 11 is defined as the pressing direction, the width direction of the main body 11 is defined as the first direction, and the length direction of the main body 11 is defined as the second direction. The first surface 141 and the third surface 143 are distributed along the pressing direction. In this embodiment, the installation cavity 13 includes two sub - cavities 131 that are spaced apart along the first direction and are square - shaped, and the terminal assembly 2 is correspondingly provided with two and is respectively disposed in the two sub - cavities 131. One side of the two sub - cavities 131 close to the third surface 143 is sealed, and one side of the two sub - cavities 131 close to the first surface 141 is open to form an opening side. A first insertion opening 15 that respectively communicates with the two sub - cavities 131 is formed on the second surface 142 of the main body 11 along the second direction. The diameter of the first insertion opening 15 is larger than the diameter of a connection object such as a wire and is used for the wire to penetrate into the installation cavity 13. A second insertion opening 16 is formed on the third surface 143 of the main body 11 along the pressing direction. The second insertion opening 16 penetrates the main body 11 along the pressing direction, and the second insertion opening 16 communicates with the two sub - cavities 131 along the first direction to communicate with the installation cavity 13. The button 3 is movably installed in the second insertion opening 16 from the opening side of the main body 11 to facilitate cooperation with the terminal assembly 2 along the pressing direction.

[0031] In this embodiment, the bottom cover 12 has a square structure, and its length and width are respectively smaller than those of the main body 11. To ensure a more secure and tight connection between the bottom cover 12 and the main body 11, an opening groove 18 communicating with the installation cavity 13 and allowing the entire bottom cover 12 to pass through is recessed on the first surface 141 of the main body 11. The opening groove 18 and the installation cavity 13 are stepped to limit the penetration depth of the bottom cover 12. An arc-shaped rib 121 is protruded on one side of the bottom cover 12 facing the main body 11. A groove 111 for the rib 121 to pass through is recessed at a position on the opening groove 18 on the first surface 141 of the main body 11 corresponding to the rib 121, so as to increase the contact area with the main body 11 after the bottom cover 12 is installed on the main body 11, and at the same time limit the movement of the bottom cover 12 in the first direction and / or the second direction. When installing the bottom cover 12, the cooperation between the rib 121 and the groove 111 can also be used to determine the direction of the bottom cover 12 for quick alignment and installation. To facilitate the detachable connection between the main body 11 and the bottom cover 12, extension portions 122 extending toward the main body 11 along the pressing direction are formed on opposite sides of the bottom cover 12 along the first direction or the second direction. Limiting through grooves 123 are formed through the two extension portions 122 along the direction in which the two extension portions 122 are separated. The extension portions 122 are integrally formed with the bottom cover 12 and are both made of plastic, having a certain elasticity. Limiting grooves 112 for the extension portions 122 to pass through are formed through the main body 11 at positions corresponding to the two extension portions 122 along the pressing direction. When installing the bottom cover 12, after the rib 121 is aligned with the groove 111 and the bottom cover 12 is moved into the opening groove 18, the two extension portions 122 are aligned with the two limiting grooves 112 along the pressing direction and gradually slide into the limiting grooves 112 along the pressing direction. To prevent the bottom cover 12 from falling off after being installed in the opening groove 18, a clamping block 113 for clamping into the limiting groove 112 when the bottom cover 12 seals the opening side of the installation cavity 13 is protruded on the inner wall of the limiting groove 112. A guiding inclined surface gradually widening from the first surface 141 to the third surface 143 is provided on one side of the clamping block 113 facing the bottom cover 12, so as to facilitate the extension portion 122 to continue to move through the extrusion and guiding of the guiding inclined surface after gradually approaching and contacting the clamping block 113 during the movement of the bottom cover 12 until the clamping block 113 is aligned with the limiting groove 112 and then clamped into the limiting groove 112. At this time, the bottom cover 12 abuts against the opening groove 18, and the movement of the bottom cover 12 is restricted through the cooperation with the clamping block 113.

[0032] In this embodiment, the terminal assembly 2 includes a conductive terminal 21 made of a conductive metal such as red copper, etc., and an elastic piece 22 made of an elastic metal. The conductive terminal 21 has a mating conductive end 21a installed in the installation cavity 13 and tightly fitted with the inner wall of the installation cavity 13, and a welding end 21b that movably passes through the bottom cover 12 from the mating conductive end 21a to extend outside the plastic housing 1. The mating conductive end 21a cooperates with the elastic piece 22 to clamp and fix the connection object, and the welding end 21b is used for welding on connection objects such as a circuit board to achieve the conduction of the entire terminal assembly 2. The elastic piece 22 includes a supporting end 22a attached to and supported by the conducting portion 211 or the plastic housing 1, and elastic arms 22b having at least two elastic abutments below the contact portion 212 and the button 3. The supporting end 22a ensures the positioning between the elastic piece 22 and the conductive terminal 21 to prevent the elastic piece 22 from moving and affecting the use. When the button 3 is pressed along the pressing direction, the elastic arms 22b move away from the contact portion 212. When the button 3 moves in the reverse direction along the pressing direction, the elastic arms 22b elastically abut against the contact portion 212 to be able to clamp the connection object in the working state; two or more elastic arms 22b increase the clamping force while ensuring the clamping and fixing of the wire. When any one of the elastic arms 22b has problems such as elastic failure and can no longer clamp the wire, the other elastic arms 22b still maintain the clamping of the wire, avoiding the occurrence of electrical signal transmission termination or poor contact.

[0033] Among the contents defined in this embodiment, the mating conductive end 21a of the conductive terminal 21 includes a substrate 213, and a conducting portion 211 and a contact portion 212 that extend toward the first direction on both sides respectively separated from the substrate 213 along the pressing direction. The oppositely arranged conducting portion 211 and contact portion 212 are abutted against the inner wall of the installation cavity 13 and the bottom cover 12 when installed in the secondary cavity 131 and the bottom cover 12 is connected in the opening groove 18, so as to ensure the firm connection between the conductive terminal 21 and the plastic housing 1 and prevent the conductive terminal 21 from loosening. The conducting portion 211 is located on the side close to the bottom cover 12 along the pressing direction, and the contact portion 212 is located on the side away from the bottom cover 12 along the pressing direction. The welding end 21b is provided with at least one and extends along the pressing direction after being bent from the conducting portion 211. The welding end 21b is defined as a welding leg. In this embodiment, the welding end 21b is provided with two and is spaced apart along the second direction. A protruding portion 214 protrudes along the first direction or the second direction at the end of the welding end 21b away from the conducting portion 211, so as to be clamped in the corresponding groove structure on the circuit board, and then electrically connected to the circuit board through welding. Through holes 124 for the welding end 21b to movably pass through along the pressing direction are respectively opened at positions on the bottom cover 12 corresponding to the welding ends 21b. When the conductive terminal 21 is installed in the installation cavity 13 and the bottom cover 12 is covered, the welding end 21b passes through the through hole 124 to be located outside the plastic housing 1, so as to facilitate the connection between the welding end 21b and the circuit board after the plastic housing 1 is installed.

[0034] In the content defined by this embodiment, the elastic piece 22 includes a first wall segment 221 arranged parallel and in contact with the conducting portion 211, a first bending segment 222 bent from one end of the first wall segment 221 toward the contact portion 212, a second wall segment 223 extending from the first bending segment 222 toward the contact portion 212 and abutting against the contact portion 212 and the button 3, a second bending segment 224 bent from the first wall segment 221 toward the contact portion 212, and a third wall segment 225 extending from the second bending segment 224 toward the contact portion 212 and abutting against the contact portion 212 and the button 3. The first wall segment 221 is defined as a support end 22a to increase the contact area with the conducting portion 211 and improve the cooperation stability between the elastic piece 22 and the conductive terminal 21. The second wall segment 223 and the third wall segment 225 are defined as elastic arms 22b to achieve double clamping. When the first wall segment 221 is arranged parallel to the conducting portion 211, in order to prevent sliding between the first wall segment 221 and the conducting portion 211, a convex bump 226 protruding toward the conducting portion 211 is formed by stamping on the first wall segment 221 along the pressing direction. A perforation 215 is provided at a position corresponding to the convex bump 226 on the conducting portion 211 for the convex bump 226 to pass through and be riveted to, so as to limit the movement of the first wall segment 221 and ensure the stability of the elastic piece 22. In this embodiment, the second bending segment 224 includes a third bending segment 2241 bent from the first wall segment 221, a fourth wall segment 2242 extending from the third bending segment 2241 toward the contact portion 212, a fourth bending segment 2243 bent from the fourth wall segment 2242 toward the first bending segment 222, a fifth wall segment 2244 extending from the fourth bending segment 2243 toward the first bending segment, and a fifth bending segment 2245 bent from the fifth wall segment 2244 toward the contact portion 212. The third wall segment 225 extends from the fifth bending segment 2245. The fourth wall segment 2242 preferably abuts against the inner wall of the secondary cavity 131, and the cooperation between the fourth wall segment 2242 and the fifth wall segment 2244 can increase the length of the elastic piece 22 and prevent the elastic piece 22 from yielding and affecting the clamping effect on the wire. Each elastic arm 22b extends from the side of the conducting portion 211 toward the contact portion 212 relative to the contact portion 212, and each elastic arm 22b is inclined toward the side away from the first insertion opening 15. A clamping opening for clamping the wire is formed between each elastic arm 22b and the contact portion 212. The first insertion opening 15 is arranged opposite to each clamping opening along the second direction, so that the wire can pass through the first insertion opening 15 and enter the installation cavity 13 to approach the clamping opening. The button 3 moves to open or close the clamping opening by cooperating with the second abutting end 2247, realizing the fixed clamping or disassembly of the wire.In this embodiment, the elastic arm 22b has a first abutting end 2246 for elastically abutting against the contact portion 212 and a second abutting end 2247 that is independently spaced from the first abutting end 2246 and is used for elastically abutting against the button 3. The first chassis end and the second abutting end 2247 are spaced apart along the first direction, and both second abutting ends 2247 extend into the second insertion opening 16 on the side facing the inside of the second insertion opening 16 in the first direction relative to the first abutting end 2246, so that the button 3 cooperates with the second abutting end 2247 when inserted into the second insertion opening 16. To facilitate the cooperation between the second abutting end 2247 and the button 3, the end of the second abutting end 2247 is bent and extended along the second direction.

[0035] In this embodiment, due to the distribution of the secondary cavity 131 and the second insertion opening 16, the button 3 is disposed in the second insertion opening 16. For this reason, the button 3 and the conductive terminals 21 are distributed along the first direction and are located between the two conductive terminals 21. The button 3 includes a pressing block 31 and a guiding block 32 fixedly connected to the pressing block 31. The pressing block 31 has a square block structure or a multi-prismatic structure. The guiding block 32 has a rectangular sheet structure and its length direction is arranged along the second direction. The opposite sides of the guiding block 32 extend away from each other along the second direction and protrude from the pressing block 31, so that the length of the guiding block 32 is greater than the length of the pressing block 31. On the inner wall of the second insertion opening 16, corresponding to the two inner walls where the guiding block 32 protrudes from the pressing block 31, sliding grooves 161 are respectively recessed for the two sides of the guiding block 32 to slide through. The sliding grooves 161 guide the pressing block 31. At the same time, one side of the sliding groove 161 close to the third surface 143 is sealed to limit the moving depth of the button 3 and prevent the button 3 from disengaging from the second insertion opening 16 in the pressing direction. Each second abutting end 2247 elastically abuts against one side surface of the pressing block 31 facing the installation cavity 13. When in use, when the button 3 is pressed towards the installation cavity 13 in the pressing direction, the button 3 presses the second abutting end 2247 to drive the first abutting end 2246 to move and open the clamping opening. After the button 3 is no longer stressed, the second abutting end 2247 rebounds to reset the button 3, and the clamping opening closes accordingly. Preferably, two baffles 125 are protruded on the bottom cover 12 and are spaced apart along the first direction. The two baffles 125 are arranged opposite to the second insertion opening 16 in the pressing direction, and there is a guiding space between the two baffles 125 for the guiding block 32 to always pass through in the pressing direction, so as to guide the guiding block 32, position the button 3 during assembly, and prevent the button 3 from deflecting.

[0036] The working mode of one embodiment of the spring - type wiring connector of the present utility model is as follows: By pressing the button 3, the button 3 moves toward the inside of the installation cavity 13 along the pressing direction to squeeze the second abutting end 2247. The second abutting end 2247 deforms toward the first surface 141 under force, driving the first abutting end 2246 to deform toward the first surface 141 as well, thus opening the clamping mouth. At this time, the wire can be inserted into the installation cavity 13 from the first insertion port 15 and into the clamping mouth. Then, release the button 3, and the elastic arm 22b rebounds and resets to clamp the wire. Then, the welding end 21b is welded to the corresponding circuit board, which is used for the connection of electrical signals after the power is turned on.

Claims

1. A spring - type wiring connector, comprising a plastic housing, a terminal assembly disposed within the plastic housing, and a button that is installed on the plastic housing in a limited manner by the plastic housing along a pressing direction, characterized in that: The terminal assembly includes a conductive terminal and an elastic piece. The conductive terminal includes a contact portion and a welding leg extending from the contact portion. The elastic piece includes a supporting end supported in the plastic housing or the conductive terminal, and at least two elastic arms extending and bending from the supporting end and elastically abutting against the contact portion and below the button. When the button is pressed in the pressing direction, the elastic arms are separated from the contact portion. In the working state, a connecting object is clamped between the contact portion and the elastic arms.

2. The spring - type wiring connector according to claim 1, wherein: The conductive terminal further includes a conducting portion integrally formed with the contact portion and oppositely arranged to support on the plastic housing, and the welding leg extends from the conducting portion; the supporting end includes a first wall segment arranged parallel and attached to the conducting portion, a first bending segment bent from one end of the first wall segment toward the contact portion, a second wall segment extending from the first bending segment toward the contact portion and abutting against the contact portion and the button, a second bending segment bent from the other end of the first wall segment toward the contact portion, and a third wall segment extending from the second bending segment toward the contact portion and abutting against the contact portion and the button. The first wall segment is defined as the supporting end, and both the second wall segment and the third wall segment are defined as the elastic arms.

3. The spring - type wiring connector according to claim 2, wherein: The second bending segment includes a third bending segment bent from the first wall segment, a fourth wall segment extending from the third bending segment toward the contact portion, a fourth bending segment bent from the fourth wall segment toward the first bending segment, a fifth wall segment extending from the fourth bending segment toward the first bending segment, and a fifth bending segment bent from the fifth wall segment toward the contact portion. The third wall segment extends from the fifth bending segment.

4. The spring - type wiring connector according to claim 2 or 3, characterized in that: The button and the conductive terminal are distributed in a first direction perpendicular to the pressing direction. The elastic arm has a first abutting end for elastically abutting against the contact portion and a second abutting end independently spaced from the first abutting end and for elastically abutting against the button.

5. The spring - type wiring connector according to any one of claims 1 to 3, characterized in that: A convex bump protruding toward the conducting portion is stamped on the supporting end, and a through hole for the convex bump to pass through and be riveted therein is provided at a position corresponding to the convex bump on the conducting portion.

6. The spring - type wiring connector according to claim 4, characterized in that: The plastic housing includes a main body and a bottom cover. An installation cavity penetrating the first surface of the main body in the pressing direction is provided on the main body. The bottom cover is detachably connected to the first surface of the main body to block the opening side of the installation cavity. A convex strip protrudes from the bottom cover toward the main body. A groove for the convex strip to penetrate therein is recessed at a position corresponding to the convex strip on the first surface of the main body; the conductive terminal has a mating conductive end installed in the installation cavity and tightly fitted with the inner wall of the installation cavity, and a welding end extending out of the plastic housing by passing through the bottom cover movably from the mating conductive end. The conducting portion and the contact portion are both formed on the mating conductive end.

7. The spring-type electrical connector according to claim 6, wherein: Extension portions extending toward the main body in the pressing direction are formed on opposite sides of the bottom cover. A limiting through groove is penetrated and opened on the extension portions. Limiting grooves for the extension portions to penetrate therein are penetrated and opened at positions corresponding to the two extension portions on the main body in the pressing direction. A clamping block for being clamped into the limiting groove when the bottom cover seals the opening side of the installation cavity protrudes from the inner wall of the limiting groove.

8. The spring-type wiring connector according to claim 6, characterized in that: A first insertion opening communicating with the installation cavity is formed on a second surface of the main body adjacent to the first surface along a second direction. Each of the elastic arms is inclined away from the first insertion opening relative to the contact portion, and a clamping opening for clamping a connection object is formed between each of the elastic arms and the contact portion. The button moves to open or close the clamping opening by cooperating with the second abutting end.

9. The spring - type wire connector according to claim 6, characterized in that: The button includes a pressing block and a guiding block fixedly connected to the pressing block. Opposite sides of the guiding block extend away from each other along the second direction to protrude outward from the pressing block. A second insertion opening communicating with the installation cavity is formed on a third surface of the main body facing the first surface along the pressing direction. The pressing block movably penetrates through the second insertion opening along the pressing direction. Sliding grooves for the guiding block to slidably penetrate through are recessed on inner walls of the second insertion opening corresponding to two sides where the guiding block protrudes outward from the pressing block. The second abutting end extends into the second insertion opening along the first direction to elastically abut against a side surface of the pressing block facing the installation cavity.

10. The spring-type wiring connector according to claim 9, characterized in that: Two baffles spaced apart along the first direction are convexly provided on the bottom cover, and a guiding space for the guiding block to always penetrate through along the pressing direction is formed between the two baffles.

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