Elastic piece type connection terminal

Abstract

The present invention discloses a shrapnel type connection terminal, which relates to an electrical connector. Its technical key points include a number of terminal seats fixed side by side. A pin extends from the bottom of the terminal seat, and the pins between adjacent terminal seats are staggered. The present invention has the advantage of improving the tolerance of the connection terminal to high voltage.

Description

Technical Field

[0001] The present invention relates to an electrical connector, and more specifically, to a spring piece type connection terminal. Background Art

[0002] A terminal block, also known as an electrical connector, can quickly realize the connection between wires and wires, wires and circuit boards, and circuit boards and circuit boards. It is an indispensable component in electronic devices and is increasingly widely used. The forms and structures of electrical connectors are ever-changing. With different application objects, frequencies, powers, application environments, etc., there are various structural forms of electrical connectors. The connection methods between electrical connectors and wires mainly include screw type, spring piece type, piercing the wire insulation skin, cold pressing terminals at the end of the wire, etc. At present, spring piece type terminal blocks have been widely used in the world's electrical and electronic engineering industries, such as lighting, elevator lift control, instruments, power supplies, chemistry, and automotive power.

[0003] Currently, Chinese Patent No. CN106329161B discloses a spring piece type terminal block that facilitates wiring operations. By changing the handle structure in the prior art, a driving inclined surface A and a hook A are added to the handle, a push rod guide groove is added to the plastic body, a push rod is arranged in the push rod guide groove, and a driving inclined surface B and a hook B that cooperate with the driving inclined surface A and the hook A are arranged on the push rod.

[0004] In the prior art, for a terminal block similar to the above, in order to improve the connection stability with the circuit board, generally two pins for connecting the circuit board extend from its bottom. However, when the number of pins of the terminal block increases, the distance between the pins of adjacent terminal blocks will decrease, and the breakdown voltage between the pins of the connection terminals will decrease. Summary of the Invention

[0005] Aiming at the existing technical problems, the purpose of the present invention is to provide a spring piece type connection terminal, which has the advantage of improving the tolerance of the connection terminal to high voltage.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A spring piece type connection terminal includes a plurality of terminal blocks fixed side by side. A pin extends from the bottom of the terminal block, and the pins between adjacent terminal blocks are staggered.

[0007] By adopting the above technical solution, by only arranging one pin on the terminal block and staggering the pins between adjacent terminal blocks; compared with using two pins before, when multiple terminal blocks are connected, adjacent terminal blocks exert force on each other, and the force balance of the terminal block can still be ensured. In addition, the staggered arrangement increases the distance between the pins of adjacent terminal blocks, so the voltage value required for the breakdown voltage between adjacent terminals is increased, and the tolerance of the connection terminal to high voltage is improved.

[0008] The present invention is further configured such that: a stamping arc protruding horizontally towards the inside of the terminal block is provided in the middle part of the vertical pin.

[0009] By adopting the above technical solution, due to the provision of the stamping arc protrusion, when the terminal block is inserted into the circuit board, the stamping arc can penetrate into the lower side of the circuit board, providing a resistance to limit the floating of the pin, thereby ensuring the stability of the position of the terminal during soldering with the circuit board.

[0010] The present invention is further configured such that: the terminal block includes:

[0011] a base body, which is provided with a receiving cavity and a wiring hole provided on the upper side of the receiving cavity and communicating with the receiving cavity;

[0012] a conductive elastic sheet, which is disposed in the receiving cavity, and a connecting portion for elastically abutting and clamping a wire is formed on the side of the conductive elastic sheet facing the wiring hole, and the pin is integrally connected to the conductive elastic sheet;

[0013] a key, which slides in the base body, and one end of the key extends out of the base body, and the other end abuts against the connecting portion, for increasing the gap on the connecting portion by sliding downwards.

[0014] By adopting the above technical solution, the wire can penetrate into the receiving cavity through the wiring hole, and by moving the key downwards to increase the gap on the connecting portion, after the wire is clamped into the gap; by releasing the key, the connecting portion is reset elastically to clamp the wire; realizing the quick electrical connection between the wire and the pin.

[0015] The present invention is further configured such that: the wiring hole is inclined, the connecting portion includes a fixed piece parallel to the wiring hole and a movable piece arranged horizontally, and the key abuts against the movable piece.

[0016] By adopting the above technical solution, the inclined wiring hole has a better effect of facilitating the insertion of the wire compared with the horizontally or vertically arranged wiring holes. And by providing a fixed piece parallel to the wiring hole, it can ensure that after the wire is inserted, there is a larger electrical contact area between the wire and the connecting portion; and by providing a horizontally arranged movable piece, the contact between the key and the movable piece is vertical, which is more conducive to the key driving the deformation of the movable piece, so that a gap for the wire to be inserted is generated between the movable piece and the fixed piece.

[0017] The present invention is further configured such that: a blocking convex block is provided on the upper protrusion of the fixed piece to abut against the upper end face of the movable piece when the movable piece is in a horizontal state.

[0018] By adopting the above technical solution, the blocking convex block abuts against the upper end face of the movable piece, so that the fixed piece can limit the upward swing of the movable piece, and the movable piece can stably maintain a horizontal state at the steady state.

[0019] The present invention is further configured such that: a sliding groove for the button to slide is provided on the inner side of the base body, a limiting groove is vertically formed on the button, and a limiting block protruding in the sliding groove and clamped in the limiting groove is provided.

[0020] By adopting the above technical solution, with the cooperation of the limiting groove and the limiting block, the button can only slide within a limited range, preventing the button from moving out of the base body.

[0021] The present invention is further configured such that: a pressure assisting plate hinged on the upper side is provided on the lower side side wall of the button, and a limiting portion for restricting the rotation of the pressure assisting plate is further provided on the button. When the pressure assisting plate abuts against the limiting portion, the lower end of the pressure assisting plate and the lower end of the button are on the same horizontal plane.

[0022] By adopting the above technical solution, the upper end of the pressure assisting plate is hinged on the side wall of the button. Therefore, when the button moves downward, the pressure assisting plate flips on the fixed elastic piece, so that a gap is generated between the lower end of the pressure assisting plate and the side wall of the button, and the rotation stops after abutting against the limiting portion. Thus, the force application position of the button on the movable segment is closer to the middle of the movable segment, which is beneficial for the button to push the movable segment to generate deformation.

[0023] The present invention is further configured such that: the pressure assisting plate is in an arc shape with the concave surface facing the button.

[0024] By adopting the above technical solution, when the pressure assisting plate flips to generate a gap between it and the bottom of the button, the gap between the pressure assisting plate with the concave surface facing the button and the button will be larger, which is more beneficial for the wire to enter the gap between the pressure assisting plate and the button; at the same time, when the wire enters the gap between the pressure assisting plate and the button, it can further play an effect of limiting and fixing the wire.

[0025] The present invention is further configured such that: the bottom surface of the pressure assisting plate is a circular surface.

[0026] By adopting the above technical solution, during the flipping process of the pressure assisting plate with a circular bottom surface, less wear is caused to itself and the movable segment during the friction process.

[0027] The present invention is further configured such that: a detection groove is provided on the upper side of the base body, and one end of the conductive elastic piece extends into the detection groove.

[0028] By adopting the above technical solution, when it is necessary to understand the power connection status of the terminal block externally, the electric pen can be inserted into the detection groove to contact the conductive elastic piece to achieve rapid electrical detection.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1)By setting staggered pins on adjacent terminal bases, the distance between pins of adjacent terminals is increased, so as to increase the voltage value required for breakdown voltage and improve the tolerance of the connection terminals to high voltage;

[0031] (2)By setting a stamping arc with a horizontal protrusion on the pin, when the terminal base is inserted into the circuit board through the pin, the stability of the position of the wiring terminal during welding with the circuit board is ensured;

[0032] (3)By setting a detection groove, the electric pen is inserted into the detection groove to contact the conductive elastic sheet, so as to realize rapid electrical detection. Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of this embodiment;

[0034] Figure 2 is a schematic structural diagram of the terminal base in this embodiment;

[0035] Figure 3 is a schematic structural diagram of the conductive elastic sheet in this embodiment;

[0036] Figure 4 is a front view schematic diagram after the button in this embodiment is pressed;

[0037] Figure 5 is Figure 4 the sectional view taken along A-A in

[0038] Reference Numerals: 1. Terminal Base; 2. Cover Plate; 3. Pin; 31. Stamping Arc; 4. Substrate; 41. Accommodation Cavity; 42. Wiring Hole; 43. Detection Groove; 44. Connecting Column; 45. Connecting Groove; 46. Card Slot; 47. Slide Groove; 48. Guide Baffle; 49. Limit Block; 5. Conductive Elastic Sheet; 51. Main Elastic Sheet; 511. Upper Detection Sheet; 5111. Upper Horizontal Portion; 5112. Upper Vertical Portion; 512. Fixed Separation Sheet; 5121. Block Protrusion; 513. Lower Mounting Sheet; 5131. Mounting Main Portion; 5132. Connecting Sub-Portion; 5133. Reinforcing Sub-Portion; 5134. Buckling Protrusion Point; 5135. Reinforcing Section; 52. Sub-Elastic Sheet; 521. Mounting Separation Sheet; 5211. Buckling Hole; 522. Moving Separation Sheet; 523. Arc Separation Sheet; 6. Button; 61. Limit Groove; 62. Rotation Groove; 7. Auxiliary Pressure Plate. Detailed Embodiments

[0039] The present invention will be described in detail below with reference to the drawings and embodiments.

[0040] Embodiment, a spring sheet type connection terminal, as Figure 1As shown in the figure, it includes a cover plate 2 and several terminal bases 1, and the terminal bases 1 are sequentially and side-by-side snap-fixed on the cover plate 2. In this embodiment, the terminal base 1 is used to quickly realize the connection between the wire and the circuit board. A wiring hole 42 for inserting the wire is provided on the upper side thereof, and a pin 3 made of metal extends downward at the lower end. In practical applications, the terminal base 1 is fixed on the circuit board through the pin 3, and the external wire is connected to the terminal base 1 through the wiring hole 42, and the quick electrical connection between the wire and the circuit board is realized through the pin 3.

[0041] In this embodiment, only one pin 3 vertically extends from the bottom surface of each terminal base 1, and the pins 3 between adjacent terminal bases 1 are staggered. Thus, in addition to the spacing between the terminal bases 1, there is also the spacing of the long sides of the bottom surfaces of the terminal bases 1 between adjacent terminal bases 1, thereby greatly increasing the spacing between the pins 3 of adjacent terminal bases 1. Therefore, the voltage value required for the breakdown voltage between adjacent terminals is increased, and the tolerance of the connection terminals to high voltage is improved.

[0042] Furthermore, as Figure 1 shown, a chamfer is provided at the bottom of the pin 3, and a stamping arc 31 is provided at a position slightly below the middle of the pin 3 in the vertical direction. The stamping arc 31 protrudes horizontally towards the inside of the terminal base 1. Of course, the position of the stamping arc 31 is mainly related to the thickness of the circuit board in practice. When the pin 3 is inserted into the circuit board, the stamping arc 31 can penetrate below the circuit board, and the upper side of the stamping arc 31 can abut against the lower end surface of the circuit board. The stamping arc 31 provides a resistance to limit the floating of the pin 3, thereby ensuring the stability of the position of the wiring terminal during welding with the circuit board. In addition, since all the stamping arcs 31 protrude horizontally towards the inside of the terminal base 1, the protruding directions of the stamping arcs 31 on adjacent wiring terminals are opposite, so that the overall force received by the connection terminals from the stamping arcs 31 is not single, further improving the stability of the position of the wiring terminal during welding with the circuit board.

[0043] Specifically, as Figure 1 shown, the terminal base 1 includes a base body 4 and a conductive elastic sheet 5. A receiving cavity 41 is provided on one side wall of the base body 4, and the upper side of the receiving cavity 41 is communicated with the wiring hole 42. The conductive elastic sheet 5 is snap-fitted into the receiving cavity 41, and the upper end of the pin 3 penetrates into the receiving cavity 41 and is integrally connected to the conductive elastic sheet 5. Therefore, after the wire passes through the wiring hole 42 and penetrates into the receiving cavity 41, the electrical connection is realized through the conductive elastic sheet 5 and the pin 3.

[0044] Specifically, as Figure 2 shown, the wiring hole 42 is inclined, and the inclination angle is between 30 degrees and 60 degrees. In this example, a chamfer is provided at one side corner of the base body 4, and the wiring hole 42 is inclined at 45 degrees on the chamfer. The inclined wiring hole 42 has a better effect of facilitating the insertion of the wire compared to the horizontally or vertically arranged wiring holes 42.

[0045] As shown Figure 2 in the figure, a detection groove 43 is vertically formed on the upper end surface of the base body 4 on the side away from the wiring hole 42. The cross-sectional shapes of the detection groove 43 and the wiring hole 42 are both in a closed U shape. A notch is formed on the side wall of the bottom surface of the detection groove 43 facing the wiring hole 42, so that the upper end of the conductive elastic piece 5 can enter the detection groove 43 through the notch. When the connection terminal is installed on the circuit and a wire is inserted into the wiring hole 42, by inserting the electric pen into the detection groove 43 to contact the conductive elastic piece 5, rapid electrical detection inside the terminal block 1 can be realized.

[0046] As shown Figure 2 in the figure, several connecting columns 44 protrude outward from the side wall of the base body 4 where the accommodating cavity 41 is formed. The protruding axial length of the connecting columns 44 is approximately half of the overall wall thickness of the terminal block 1. In this embodiment, the number of the connecting columns 44 is five, four of which are arranged in a substantially rectangular shape below the wiring hole 42 and the detection groove 43, and the other one is arranged in the accommodating groove. On the side wall of the machine body opposite to the connecting columns 44, connecting grooves 45 are formed corresponding to the connecting columns 44 (see Figure 1 ). Thus, adjacent terminal blocks 1 are fixed through the snap-fit between the connecting columns 44 and the connecting grooves 45. In order to enhance the tight connection between the connecting grooves 45 and the connecting columns 44, the outer diameter of the connecting columns 44 can be slightly larger than that of the connecting grooves 45 to achieve an interference snap-fit. Additionally, it is worth mentioning that connection holes are provided on the cover plate 2 corresponding to the positions of the above-mentioned connecting columns 44 to fix the cover plate 2 and the base body 4.

[0047] As shown Figure 2 、 3 in the figure, the conductive elastic piece 5 includes a main elastic piece 51 and a secondary elastic piece 52. The main elastic piece 51 is substantially Z-shaped, and the secondary elastic piece 52 is substantially horizontally placed with an opening facing downwards in a U shape of the main elastic piece 51. One side end surface of the main elastic piece 51 away from the connection hole abuts against the inner wall of the base body 4 forming the accommodating cavity 41, and is fixedly connected to the base body 4. The lower side wall of the secondary elastic piece 52 is snap-connected and fixed to the main elastic piece 51, and the upper side wall of the secondary elastic piece 52 elastically abuts against the main elastic piece 51 to form a connecting portion for clamping the wire.

[0048] As shown Figure 2 、 3 in the figure, the main elastic piece 51 includes an upper detection piece 511, a fixed splitting piece 512, and a lower mounting piece 513. The upper detection piece 511 is arranged on the upper side of the main elastic piece 51, and is used to provide upper support for the main elastic piece 51 and to extend into the detection groove 43 to detect whether the main elastic piece 51 is energized. The fixed splitting piece 512 is inclined, and the upper end is integrally connected to the upper detection piece 511 to form a connecting portion. The lower mounting piece 513 is integrally connected to one end of the fixed splitting piece 512 and horizontally extends at the bottom of the accommodating cavity 41 to ensure the stability of the connection between the main elastic piece 51 and the accommodating cavity 41.

[0049] Specifically, as Figure 2 and 3 shown, the upper detection piece 511 is L-shaped, including an upper horizontal part 5111 provided on the upper side and an upper vertical part 5112 provided on the lower side; the upper horizontal part 5111 extends into the detection groove 43 through the notch of the detection groove 43 and abuts against the bottom wall of the detection groove 43, and can provide support for the whole main elastic piece 51; and in order to improve the tightness of the connection between the upper horizontal part 5111 and the bottom wall of the detection groove 43, the cross-sectional shapes of the upper horizontal part 5111 and the detection groove 43 are the same.

[0050] As Figure 2 and 3 shown, the fixed partition piece 512 is inclined parallel to the axis of the wiring hole 42. Since the fixed partition piece 512 is a component part of the connecting part; after the wire is inserted into the connecting part, there is an increased electrical contact area between the wire and the connecting part, and the connection is more stable.

[0051] As Figure 2 and 3 shown, the lower mounting piece 513 as a whole includes a mounting main part 5131, a connecting branch part 5132 and a reinforcing branch part 5133. The mounting main part 5131 is horizontal as a whole and the lower end abuts against the lower side wall of the accommodating cavity 41, and the pin 3 is integrally connected to the mounting main part 5131 and passes through the base body 4 through the accommodating cavity 41. The connecting branch part 5132 is inclined, and one end is integrally connected to the lower end of the fixed partition piece 512, and the other end is integrally connected to one end of the mounting main part 5131. The reinforcing branch part 5133 is also inclined, one end of which is integrally connected to the other end of the mounting main piece, and a buckling convex point 5134 for connecting the auxiliary elastic piece 52 is arranged on the upper end surface of the mounting main part 5131 on the side close to the reinforcing branch part 5133. The inclined connecting branch part 5132 increases the contact area after the connection of the main elastic piece 51 and the auxiliary elastic piece 52, and improves the tightness of the connection. The end of the reinforcing branch part 5133 far from the mounting main piece horizontally extends with a reinforcing section 5135. The reinforcing section 5135 is snapped into the corresponding card slot 46 in the accommodating cavity 41 to improve the stability of the connection between the main elastic piece 51 and the accommodating groove.

[0052] As Figure 2 and 3 shown, the auxiliary elastic piece 52 includes a mounting partition piece 521 provided on the lower side, a moving partition piece 522 provided on the upper side, and an arc-shaped partition piece 523 connecting the mounting partition piece 521 and the moving partition piece 522. The mounting partition piece 521 fits on the reinforcing branch part 5133 and the side of the mounting main part 5131 close to the reinforcing branch part 5133. At the same time, a buckling hole 5211 is provided on the mounting partition piece 521 corresponding to the buckling convex point 5134, so that the main elastic piece 51 and the auxiliary elastic piece 52 can be quickly buckled and fixed together.

[0053] As Figure 2 and3 As shown in the figure, the arc-shaped shard 523 is used to provide elasticity for the moving shard 522. A blocking side wall that abuts against the upper end face of the arc-shaped shard 523 extends from the inner wall of the accommodating cavity 41. Through the abutting cooperation between the blocking side wall and the arc-shaped shard 523, the moving shard 522 can be in a horizontal state when not stressed and elastically abut against the fixed shard 512. The moving shard 522 and the fixed shard 512 together form a connecting part for clamping and fixing the wire. In order to further limit the upward swing of the moving shard 522, a blocking bump 5121 is protrudingly provided on the upper part of the fixed shard 512, and the blocking bump 5121 abuts against the upper end face of the moving shard 522 when the moving shard 522 is in a horizontal state. The connecting part is directly opposite to the wiring hole 42. After the wire enters the wiring hole 42, it will directly move towards the connecting part.

[0054] As Figure 4 、 5 shown, the terminal block 1 further includes a key 6. A sliding groove 47 for the key 6 to slide is provided on the upper end face of the inner side of the accommodating cavity 41 of the base body 4, between the detection groove 43 of the sliding groove 47 and the wiring hole 42. The upper end of the key 6 extends out of the sliding groove 47, and the lower end vertically abuts against the moving shard 522. By pressing the key 6 downward, the moving shard 522 is deformed downward, increasing the gap on the connecting part. After the wire is clamped into the gap, by releasing the key 6, the connecting part is reset elastically to clamp the wire, realizing the rapid electrical connection between the wire and the pin 3.

[0055] Specifically, as Figure 4 、 5 shown, a limiting groove 61 is vertically opened on the side wall of the key 6 facing the connecting groove 45. A limiting block 49 that is clamped in the limiting groove 61 protrudingly provided in the sliding groove 47. With the cooperation between the limiting groove 61 and the limiting block 49, the key 6 can only slide within a limited range, preventing the key 6 from moving out of the sliding groove 47. In order to facilitate the key 6 to be clamped into the sliding groove 47, the lower end face of the limiting card slot 46 is set as an inclined guiding surface.

[0056] As Figure 4 、 5 shown, a pressure assisting plate 7 is connected to the outer side wall of the lower side of the key 6. The upper end of the pressure assisting plate 7 is hinged to the key 6. The pressure assisting plate 7 is in an arc shape with a concave surface facing the key 6, so that there is a gap for the wire to pass through between the pressure assisting plate 7 and the lower side wall of the key 6. A limiting part for restricting the outward rotation of the pressure assisting plate 7 is also provided on the key 6. When the pressure assisting plate 7 abuts against the limiting part, the lower end of the pressure assisting plate 7 and the lower end of the key 6 are at the same horizontal plane. In this embodiment, the hinge between the pressure assisting plate 7 and the key 6 is realized by opening a rotating groove 62 in the middle of the key 6. The limiting part is formed by providing a protruding edge on the lower end face of the rotating groove 62.

[0057] As Figure 4, 5 As shown in 5 , the bottom surface of the auxiliary pressing plate 7 is a circular surface. When the auxiliary pressing plate 7 flips and rubs against the movable shim 522, less wear is caused to itself and the movable shim 522. Therefore, when the key 6 moves downward, the auxiliary pressing plate 7 flips on the fixed elastic piece, increasing the distance between the lower end of the auxiliary pressing plate 7 and the side wall of the key 6, and stops rotating after abutting against the limiting portion. At this time, both the auxiliary pressing plate 7 and the key 6 apply pressure to both sides of the movable shim 522, making the force-bearing position of the movable shim 522 closer to the middle of the movable shim 522, which is beneficial for the key 6 to push the movable shim 522 to deform.

[0058] As Figure 4 , 5 shown in 5 , an inclined guiding baffle 48 is provided at the lower end of the sliding groove 47 of the base body 4. The lower end of the guiding baffle 48 faces outward. When the auxiliary pressing plate 7 moves upward, the guiding baffle 48 will abut against the upper end of the auxiliary pressing plate 7. Under the guiding of the inclined surface of the guiding baffle 48, the auxiliary pressing plate 7 will flip towards the key 6 side, reducing the distance between the lower end of the auxiliary pressing plate 7 and the side wall of the key 6. After the wire is inserted, the key 6 will move upward under the action of the elasticity of the movable shim 522, so that the distance between the lower end of the auxiliary pressing plate 7 and the side wall of the key 6 is reduced, further achieving the effect of limiting and fixing the wire.

[0059] Installation process of the terminal block 1:

[0060] 1. First, connect the main elastic piece 51 and the auxiliary elastic piece 52 together through the cooperation between the buckling convex point 5134 and the buckling hole 5211 to form the conductive elastic piece 5 as a whole;

[0061] 2. Install the conductive elastic piece 5 into the accommodating cavity 41 of the base body 4, and make the pin 3 pass through the accommodating cavity 41 to the bottom of the base body 4;

[0062] 3. Slide the key 6 forcefully from the upper side of the sliding groove 47 until the limiting convex block snaps into the limiting groove 61 and stop when hearing a click sound;

[0063] 4. Press the key 6 to the bottommost position and snap the auxiliary pressing plate 7 into the rotating groove;

[0064] 5. Finally, assemble another base body 4 or the cover plate 2 on the base body 4.

[0065] The above is only the preferred implementation manner of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A shrapnel type connection terminal, characterized in that, It includes a number of terminal bases (1) fixed side by side and a cover plate (2). On the other side of the terminal base (1) corresponding to the connecting column (44), a connecting groove (45) is provided. Adjacent terminal bases (1) are fixed through the snap - fit between the connecting column (44) and the connecting groove (45); at the position of the connecting column (44) of the cover plate (2) adjacent to the terminal base (1), a connecting hole is provided to realize the fixation of the cover plate (2) and a number of the terminal bases (1). The terminal base (1) includes: A base body (4) having a receiving cavity (41) and a wiring hole (42) provided on the upper side of the receiving cavity (41) and communicating with the receiving cavity (41); A key (6) sliding within the base body (4), and one end of the key (6) extending out of the base body (4), and the other end of the key (6) abutting against the connecting portion of the conductive elastic sheet (5) for increasing the gap on the connecting portion by sliding downwards; A conductive elastic sheet (5) provided within the receiving cavity (41), and the side of the conductive elastic sheet (5) facing the wiring hole (42) forms an elastically abutting connecting portion for clamping a wire. The conductive elastic sheet (5) is integrally connected with a lead (3), and the lead (3) extends out from the bottom of the terminal base (1), and the leads (3) between adjacent terminal bases (1) are staggered; On the lower side side wall of the key (6), a pressure - assisting plate (7) hinged on the upper side is provided. The key (6) is also provided with a limiting portion for restricting the rotation of the pressure - assisting plate (7). When the pressure - assisting plate (7) abuts against the limiting portion, the lower end of the pressure - assisting plate (7) and the lower end of the key (6) are on the same horizontal plane; The pressure - assisting plate (7) is in an arc shape with the concave surface facing the key (6); The bottom surface of the pressure - assisting plate (7) is a circular surface; At the lower end of the sliding groove (47) of the base body (4), an inclined guiding baffle (48) is provided. The low - end of the guiding baffle (48) faces outwards. When the pressure - assisting plate (7) moves upwards, the guiding baffle (48) will abut against the upper end of the pressure - assisting plate (7). Under the guiding of the inclined surface of the guiding baffle (48), the pressure - assisting plate (7) will flip towards the key (6) side, reducing the distance between the lower end of the pressure - assisting plate (7) and the side wall of the key (6). After the wire is inserted, the key (6) will move upwards under the action of the elasticity of the moving shim (522), so that the distance between the lower end of the pressure - assisting plate (7) and the side wall of the key (6) is reduced, achieving the effect of limiting and fixing the wire.

2. The elastic sheet type connection terminal according to claim 1, wherein On the inner - side of the base body (4), a sliding groove (47) for the key (6) to slide is provided. The key (6) is provided with a limiting groove (61) along the vertical direction, and a limiting block (49) protruding in the sliding groove (47) and clamped in the limiting groove (61) is provided; Among them, the conductive elastic sheet (5) includes a main elastic sheet (51) and a sub-elastic sheet (52). The main elastic sheet (51) is generally Z-shaped, and the sub-elastic sheet (52) is generally horizontally arranged with an opening facing downwards in a U-shape of the main elastic sheet (51). One side end face of the main elastic sheet (51) away from the connection hole abuts against the inner wall of the accommodation cavity (41) formed in the base body (4), and is fixedly connected to the base body (4). The lower side wall of the sub-elastic sheet (52) is fixedly connected to the main elastic sheet (51) by clamping, and the upper side wall of the sub-elastic sheet (52) elastically abuts against the main elastic sheet (51) to form the connection part for clamping the wire. The wiring hole (42) is inclined. The connection part includes a fixed shim (512) parallel to the wiring hole (42) and a movable shim (522) arranged horizontally. The key (6) abuts against the movable shim (522). Among them, the main elastic sheet (51) includes an upper detection sheet (511), the fixed shim (512), and a lower mounting sheet (513). The upper detection sheet (511) is arranged on the upper side of the main elastic sheet (51) to provide upper support for the main elastic sheet (51) and to extend into the detection groove (43) to detect whether the main elastic sheet (51) is electrified. The fixed shim (512) is inclined, and the upper end is integrally connected to the upper detection sheet (511). The lower mounting sheet (513) is integrally connected to one end of the fixed shim (512) and horizontally extends at the bottom of the accommodation cavity (41) to ensure the stability of the connection between the main elastic sheet (51) and the accommodation cavity (41). The lower mounting sheet (513) as a whole includes a main mounting part (5131), a connecting branch part (5132), and a reinforcing branch part (5133). The main mounting part (5131) is generally horizontal and the lower end abuts against the lower side wall of the accommodation cavity (41). The pin (3) is integrally connected to the main mounting part (5131) and passes through the base body (4) through the accommodation cavity (41). The connecting branch part (5132) is inclined, and one end of the connecting branch part (5132) is integrally connected to the lower end of the fixed shim (512), and the other end of the connecting branch part (5132) is integrally connected to one end of the main mounting part (5131). Among them, the sub-elastic sheet (52) includes a mounting shim (521) arranged on the lower side, the movable shim (522) arranged on the upper side, and an arc-shaped shim (523) connecting the mounting shim (521) and the movable shim (522). The mounting shim (521) is attached to the reinforcing branch part (5133) and the side of the main mounting part (5131) adjacent to the reinforcing branch part (5133). At the same time, a buckling hole (5211) is provided on the mounting shim (521) corresponding to the buckling convex point (5134), so that the main elastic sheet (51) and the sub-elastic sheet (52) can be quickly buckled and fixed together. Wherein, a detection groove (43) is formed in the upper side of the base body (4), and one end of the upper detection piece (511) of the main elastic piece (51) of the conductive elastic piece (5) extends into the detection groove (43). Wherein, the upper detection piece (511) is L-shaped and includes an upper horizontal portion (5111) disposed on the upper side and an upper vertical portion (5112) disposed on the lower side; the upper horizontal portion (5111) extends into the detection groove (43) through the notch of the detection groove (43) and abuts against the bottom wall of the detection groove (43), capable of providing support for the whole main elastic piece (51). Wherein, a stamping arc (31) protruding horizontally towards the inside of the terminal block (1) is provided in the vertical middle of the pin (3). Wherein, a stop convex block (5121) protruding upwards on the fixed dividing piece (512) abuts against the upper end face of the movable dividing piece (522) when the movable dividing piece (522) is in a horizontal state; the stop convex block (5121) is connected to the slot for forming the front end pin (3) with the connecting part (5132), and the stamping arcs (31) of the front end pin (3) and the rear end pin (3) are close to each other.

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