Terminal blocks

Abstract

A wiring terminal comprises a wiring frame, a spring sheet, a wiring clamp and a screw respectively arranged in the wiring frame, the axial direction of the screw is limited by the wiring frame, one end of the wiring clamp is provided with a threaded hole threadedly connected to the screw, and the screw can drive the wiring clamp to move in the wiring frame when it rotates. The spring sheet comprises a pivot part rotatably connected to the wiring frame, a wire pressing part matched with a wiring board, and a power part inserted into a clamp groove for matching. The wire is inserted between the wire pressing part and the wiring board. When the screw rotates to one side, it drives the wiring clamp to push the power part of the spring sheet to rotate to one side, so that the wire pressing part of the spring sheet approaches the wiring board to fix the wire; when the screw rotates in the reverse direction, it drives the wiring clamp to push the power part of the spring sheet to rotate in the reverse direction, so that the wire pressing part of the spring sheet is away from the wiring board to loosen the wire. Under the push of the wiring clamp, the spring sheet can overcome the friction with the wire and rotate reliably, avoiding the wire being unable to be pulled out due to over-tight fit.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, in particular to a wiring terminal. Background Art

[0002] Low-voltage electrical appliances such as circuit breakers need to be connected to the circuit through terminals when in use, especially plug-in terminals. Due to limited installation space and requirements for wiring direction, the terminals need to be small in size and able to reliably fix the wires. However, the wires connected to low-voltage electrical appliances with large current specifications are usually thicker, and it is necessary to increase the clamping force of elastic parts such as spring sheets in the terminals on the wires, which not only increases the reaction force on the elastic parts, but also the space inside the terminals is not enough for the elastic parts to reset to avoid the wires, which ultimately causes customers to use too much operating force when using, increasing the difficulty of operation and being very inconvenient. Summary of the invention

[0003] The purpose of the invention is to overcome the defects of the prior art and provide a wiring terminal with simple structure and high reliability.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A wiring terminal comprises a wiring frame, and a spring sheet, a wiring clamp and a screw respectively arranged in the wiring frame, wherein the axial direction of the screw is limited by the wiring frame, one end of the wiring clamp is provided with a threaded hole threadedly connected to the screw, and the screw can drive the wiring clamp to move in the wiring frame when it rotates, the spring sheet comprises a pivoting part rotatably connected to the wiring frame, a wire pressing part matched with a wiring board, and a power part matched with the wiring clamp, and the wire is inserted between the wire pressing part and the wiring board, and when the screw rotates to one side, it drives the wiring clamp to push the power part of the spring sheet to rotate to one side, so that the wire pressing part of the spring sheet approaches the wiring board to fix the wire; when the screw rotates in the reverse direction, it drives the wiring clamp to push the power part of the spring sheet to rotate in the reverse direction, so that the wire pressing part of the spring sheet is away from the wiring board to loosen the wire.

[0006] Preferably, the terminal clamp is provided with two clamping plates arranged opposite to each other, and the two clamping plates are spaced to form a clamping groove, and the power part of the spring sheet is inserted into the clamping groove. When the screw rotates to one side to drive the terminal clamp to move, the power part of the spring sheet is pushed by the clamping plate on one side to drive the spring sheet to rotate to one side, so that the wire pressing part is close to the terminal board to fix the wire; when the screw rotates in the opposite direction to drive the terminal clamp to move in the opposite direction, the power part of the spring sheet is pushed by the clamping plate on the other side to drive the spring sheet to rotate to the other side, so that the wire pressing part is away from the terminal board to loosen the wire.

[0007] Preferably, it comprises two stacked spring sheets, and the two spring sheets have different lengths, and locking steps facing the wire are formed at the ends of the two spring sheets.

[0008] Preferably, the wiring clamp includes a front side plate, a front clamping plate and a rear clamping plate arranged in parallel, the front clamping plate is arranged between the front side plate and the rear clamping plate, the front clamping plate and the rear clamping plate respectively constitute the two clamping plates, one end of the front side plate is connected to one end of the rear clamping plate through a left side plate, the other end of the rear clamping plate is spaced apart from the front clamping plate to avoid the spring sheet from being inserted into the clamping groove, one end of the front clamping plate is spaced apart from the left side plate, the other end of the front clamping plate is connected to the front clamping plate through a right side plate, a screw sleeve is provided on the side of the front side plate facing the front clamping plate, and a threaded hole matching the screw is provided on the screw sleeve.

[0009] Preferably, the wiring frame is in a U-shaped structure, comprising two oppositely arranged side panels and a connecting plate connected between the ends of the two side panels, and limiting plates for limiting the wiring clamps are respectively provided on the side edges of one side of the two side panels, and the wiring board is connected between the side edges on the other side of the two side panels and is arranged opposite to the wire pressing part.

[0010] Preferably, the front clamping plate is correspondingly arranged between the spring sheet and the limiting plate of the wiring frame, and one end of the front clamping plate away from the spring sheet cooperates with the side of the limiting plate, one end of the rear clamping plate extends to one side of the spring sheet, and the other end of the rear clamping plate is spaced apart from the side of the limiting plate to form a gap.

[0011] Preferably, the cross-section of the spring sheet is a V-shaped structure, the pivot portion of the spring sheet is connected between the wire pressing portion and the power portion and is bent toward the side close to the screw, the other ends of the wire pressing portion and the power portion are respectively inclined toward the side away from the screw, and a pivot shaft is provided in the middle of the wiring frame, and the pivot portion is rotatably fitted on the pivot shaft.

[0012] Preferably, it comprises two stacked spring sheets, which are an upper spring sheet and a lower spring sheet respectively, the pivot portion of the upper spring sheet is located at the outer side of the pivot portion of the lower spring sheet, the wire-pressing portion of the upper spring sheet is located at the side of the wire-pressing portion of the lower spring sheet close to the terminal block, the length of the wire-pressing portion of the upper spring sheet is smaller than the length of the wire-pressing portion of the lower spring sheet, and a locking step is formed at the connection between the wire-pressing portion of the upper spring sheet and the wire-pressing portion of the lower spring sheet; the power portion of the upper spring sheet is located at the side of the power portion of the lower spring sheet close to the screw, the length of the power portion of the upper spring sheet is smaller than the length of the power portion of the lower spring sheet, and a yield step is formed at the connection between the power portion of the upper spring sheet and the power portion of the lower spring sheet, the end of the power portion of the lower spring sheet is bent toward the yield step to form a transition portion, and the curved surface on the outer side of the transition portion cooperates with the clamp.

[0013] Preferably, the connecting plate of the wiring frame is provided with an operating hole corresponding to the screw, and the side plate is provided with a baffle bent toward one side of the connecting plate, and the nut of the screw is limited between the baffle and the connecting plate; the two side plates of the wiring frame extend upward at the end away from the screw and respectively form a left cheek plate and a right cheek plate, and a space for accommodating the wire is formed between the left cheek plate and the right cheek plate, and the wiring plate is in an L-shaped structure inverted at the top angle of the left cheek plate and the right cheek plate away from the screw.

[0014] Preferably, the wiring board includes a top wiring part that respectively cooperates with the top surfaces of the left cheek plate and the right cheek plate, and a rear wiring part formed by bending downward at one end of the top wiring part away from the screw, the left cheek plate is provided with a limiting through hole, the right cheek plate is provided with an avoidance groove at a position corresponding to the limiting through hole, the side surface of the avoidance groove is provided with a side clamping claw, the side clamping claw and the bottom surface of the avoidance groove are spaced apart to form a clamping groove, the side edge of one side of the top wiring part protrudes toward the left cheek plate to form a limiting boss that cooperates with the limiting through hole, and the side edge of the other side of the top wiring part is bent toward the right cheek plate to form a top clamping plate, and the end of the top clamping plate is provided with a top clamping claw that cooperates with the side clamping claw for limiting; when assembling, the wiring board is perpendicular to the side plate, so that the side edge of the limiting boss on one side of the wiring board passes through the top of the right cheek plate, the limiting boss is inserted into the limiting through hole, and the top clamping plate slides into the avoidance groove from the side, so that the top clamping claw is inserted into the clamping groove from the side and cooperates with the side clamping claw for limiting, and the side surfaces on both sides of the top clamping plate are flush with the side surfaces on both sides of the right cheek plate.

[0015] In the wiring terminal created by the present invention, the screw drives the spring sheet to move through the wiring clamp. When the wire is relatively thick, the spring sheet can overcome the friction with the wire and rotate reliably under the push of the wiring clamp, so that the spring sheet and the wire are reliably separated, avoiding the problem that the spring sheet and the wire are too tightly matched and the wire cannot be pulled out.

[0016] In addition, the terminal clamp 3 pushes the spring sheet 2 to move through two clamping plates 32, wherein the clamping plate 32 on one side is used to push the spring sheet 2 to fix the wire 7, and the clamping plate 32 on the other side is used to push the spring sheet 2 to release the wire 7. Under the push of the clamping plate 32, the spring sheet 2 can not only overcome the friction with the wire 7 and rotate reliably, but also the clamping groove 33 can leave a larger space for the spring sheet 2. After the spring sheet 2 is subjected to force, the clamping plate 32 and the spring sheet 2 are subjected to force line by line, and the larger space can reduce the deformation of the spring sheet 2.

[0017] In addition, by stacking two spring sheets of different lengths to form a locking step toward the wire, when the wire is thicker, the locking step can enable the ends of the two spring sheets to fix the wire separately at a certain distance, thereby ensuring reliable fixation of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of a terminal block according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the matching of the wiring terminal and the wire in the embodiment of the invention;

[0020] Figure 3 It is a schematic diagram of the structure of the wiring terminal of the embodiment of the invention;

[0021] Figure 4 It is an exploded view of the connection terminal of the embodiment of the invention;

[0022] Figure 5 It is a top view of the wiring clamp according to the embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following is combined with Figures 1 to 5 The given examples further illustrate the specific implementation of the connection terminal created by the present invention. The connection terminal created by the present invention is not limited to the description of the following examples.

[0024] like Figure 1-3 As shown, the wiring terminal created by the present invention includes a wiring frame 1 and a spring sheet 2, a wiring clamp 3 and a screw 4 respectively arranged in the wiring frame 1, the axial direction of the screw 4 is limited by the wiring frame 1, one end of the wiring clamp 3 is provided with a threaded hole 31 threadedly connected to the screw 4, and the screw 4 can drive the wiring clamp 3 to move in the wiring frame 1 when it rotates. The spring sheet 2 includes a pivot portion 21 rotatably connected to the wiring frame 1, a wire pressing portion 22 matched with the wiring board 6, and a power portion 23 matched with the wiring clamp 3. The wire 7 is inserted between the wire pressing portion 22 and the wiring board 6. When the screw 4 rotates to one side, it drives the wiring clamp 3 to push the power portion 23 of the spring sheet 2 to rotate to one side, so that the wire pressing portion 22 of the spring sheet 2 is close to the wiring board 6 to fix the wire 7; when the screw 4 rotates in the reverse direction, it drives the wiring clamp 3 to push the power portion 23 of the spring sheet 2 to rotate in the reverse direction, so that the wire pressing portion 22 of the spring sheet 2 is away from the wiring board 6 to loosen the wire 7.

[0025] In the wiring terminal created by the present invention, the screw 4 drives the spring piece 2 to move through the wiring clamp 3. When the wire 7 is relatively thick, the spring piece 2 can overcome the friction with the wire 7 and rotate reliably under the push of the wiring clamp 3, so that the spring piece 2 and the wire 7 are reliably separated, avoiding the problem that the spring piece 2 and the wire 7 are too tight and the wire 7 cannot be pulled out.

[0026] Furthermore, the terminal clamp 3 is provided with two clamping plates 32 arranged opposite to each other, and the two clamping plates 32 are spaced apart to form a clamping groove 33. The power part 23 of the spring sheet 2 is inserted into the clamping groove 33. When the screw 4 rotates to one side to drive the terminal clamp 3 to move, the power part 23 of the spring sheet 2 is pushed by the clamping plate 32 on one side to drive the spring sheet 2 to rotate to one side, so that the wire pressing part 22 is close to the terminal board 6 to fix the wire 7; when the screw 4 rotates in the opposite direction to drive the terminal clamp 3 to move in the opposite direction, the power part 23 of the spring sheet 2 is pushed by the clamping plate 32 on the other side to drive the spring sheet 2 to rotate to the other side, so that the wire pressing part 22 is away from the terminal board 6 to loosen the wire 7. The terminal clamp 3 pushes the spring sheet 2 to move through two clamping plates 32, wherein the clamping plate 32 on one side is used to push the spring sheet 2 to fix the wire 7, and the clamping plate 32 on the other side is used to push the spring sheet 2 to release the wire 7. Under the push of the clamping plate 32, the spring sheet 2 can not only overcome the friction with the wire 7 and rotate reliably, but also the clamping groove 33 can leave a larger space for the spring sheet 2. After the spring sheet 2 is subjected to force, the clamping plate 32 and the spring sheet 2 are subjected to force line by line, and the larger space can reduce the deformation of the spring sheet 2.

[0027] like Figure 3-4 In the preferred embodiment shown, the wiring frame 1 is in a U-shaped structure. The wiring frame 1 includes two oppositely arranged side panels 11 and a connecting plate 12 connected between the ends of the two side panels 11. Limiting plates 13 are respectively provided on the sides of one side of the two side panels 11. The wiring board 6 is connected between the sides of the other side of the two side panels 11. An operating hole 40 corresponding to the nut of the screw 4 is provided on the connecting plate 12. At least one side of the side panel 11 is bent inward to form a baffle 14. The nut of the screw 4 is limited between the baffle 14 and the connecting plate 12 to prevent the screw 4 from moving along the axial direction. Tools such as screwdrivers can pass through the operating hole 40 to screw the screw 4. Since the screw 4 is limited along the axial direction, the screw 4 and the threaded hole 31 on the wiring clamp 3 are engaged with each other to drive the wiring clamp 3 to approach and move away from the screw 4, and then the spring sheet 2 is driven to rotate clockwise or counterclockwise through the wiring clamp 3 to achieve the fixing and loosening of the wire 7.

[0028] See also Figure 1 , 24. The cross section of the spring sheet 2 of this embodiment is V-shaped. The pivot part 21 of the spring sheet 2 is connected between the wire pressing part 22 and the power part 23 and is bent toward the side close to the screw 4. The other ends of the wire pressing part 22 and the power part 23 connected to the pivot part 21 are respectively inclined toward the side away from the screw 4. A pivot shaft 20 connected between the two side plates 11 is provided in the middle of the wiring frame 1. The pivot part 21 is sleeved on the pivot shaft 20 for rotational cooperation. The screw 4 and the wiring clamp 3 are arranged on one side of the pivot shaft 20 to cooperate with the power part 23, and the wiring board 6 is arranged on the other side of the pivot shaft 20 to cooperate with the wire pressing part 22. As other embodiments of the spring sheet 2, the pivot part 21 and the wire pressing part 22 can be arranged at both ends respectively, the power part 23 is connected between the pivot part 21 and the wire pressing part 22, and the wiring clamp 3 can drive the spring sheet 2 to swing up and down around the power part 23 through the power part 23, all of which belong to the protection scope of the present invention.

[0029] See also Figure 2 In the direction shown, when the terminal clamp 3 moves downward away from the screw 4, the upper clamping plate 32 pushes the spring sheet 2 to rotate counterclockwise, so that the wire pressing part 22 of the spring sheet 2 is close to the terminal board 6 to clamp the wire 7 between the wire pressing part 22 and the terminal board 6; when the terminal clamp 3 moves upward close to the screw 4, the lower clamping plate 32 pushes the spring sheet 2 to rotate clockwise, so that the wire pressing part 22 of the spring sheet 2 is away from the terminal board 6 to loosen the wire 7. It can be understood that the wire pressing part 22 can also be inclined in the direction close to the screw 4, that is, the side surface on the other side of the wire pressing part 22 in the opposite direction is used to clamp the wire 7, which belongs to the protection scope of the invention. At this time, when the terminal clamp 3 moves downward away from the screw 4, the upper clamping plate 32 pushes the spring sheet 2 to rotate counterclockwise, so that the wire pressing part 22 of the spring sheet 2 is close to the terminal board 6, and the wire 7 is clamped between the wire pressing part 22 and the terminal board 6; when the terminal clamp 3 moves upward close to the screw 4, the lower clamping plate 32 pushes the spring sheet 2 to rotate clockwise, so that the wire pressing part 22 of the spring sheet 2 is away from the terminal board 6, and the wire 7 is loosened.

[0030] like Figure 1 In the spring sheet 2 embodiment shown, the spring sheet 2 is formed by bending a spring sheet, and the pivot portion 21 is located between the wire pressing portion 22 and the power portion 23 and is convex to one side and bent to form a large half arc. The wire pressing portion 22 and the power portion 23 are respectively inclined to the side away from the screw 4, and are tilted to the side close to the screw 4 at the end of the power portion 23.

[0031] Further, if Figure 2 , 4The embodiment shown includes two stacked spring pieces 2, and the two spring pieces 2 have different lengths, and a locking step 24 facing the wire 7 is formed at the end of one end of the wire pressing portion 22 of the two spring pieces 2. When the wire 7 is thicker, the angle of pushing the spring piece 2 to rotate is large, resulting in a smaller angle between the spring piece 2 and the terminal block 6. At this time, the spring piece 2 and the wire 7 are in line contact, the stability is poor, and the wire 7 cannot be reliably fixed. The locking steps 24 formed on the two spring pieces 2 can make the ends of the two spring pieces 2 fix the wire 7 separately outside a certain distance, ensuring that the wire 7 is reliably fixed.

[0032] Specifically, the two stacked spring pieces 2 are respectively an upper spring piece 2a and a lower spring piece 2b, the pivoting portion 21 of the upper spring piece 2a is located outside the pivoting portion 21 of the lower spring piece 2b, the wire pressing portion 22 of the upper spring piece 2a is located on the side of the wire pressing portion 22 of the lower spring piece 2b close to the wiring board 6, the length of the wire pressing portion 22 of the upper spring piece 2a is less than the length of the wire pressing portion 22 of the lower spring piece 2b, and a locking step 24 is formed at the connection between the wire pressing portion 22 of the upper spring piece 2a and the wire pressing portion 22 of the lower spring piece 2b;

[0033] The power part 23 of the upper spring piece 2a is located on the side of the power part 23 of the lower spring piece 2b close to the screw 4. The length of the power part 23 of the upper spring piece 2a is smaller than the length of the power part 23 of the lower spring piece 2b. A clearance step 25 is formed at the connection between the power part 23 of the upper spring piece 2a and the power part 23 of the lower spring piece 2b. The end of the power part 23 of the lower spring piece 2b is bent toward the clearance step 25 to form a transition part 26. The curved surface on the outer side of the transition part 26 cooperates with the clamping plate 32.

[0034] When the lower clamp 32 pushes the transition part 26, the curved surface on the outer side of the transition part 26 can roll on the contact surface of the clamp 32 as the spring sheet 2 rotates, reducing the friction between the spring sheet 2 and the clamp 32. This not only reduces the operating force when screwing the screw 4, but also avoids damage to the spring sheet 2 and the terminal clamp 3, thereby extending their service life.

[0035] See also Figure 4-5A preferred embodiment of the wiring clamp 3 is shown. The wiring clamp 3 is formed by bending a long plate structure in one piece. The wiring clamp 3 includes a front side plate 34, a front clamping plate 35 and a rear clamping plate 36 arranged in parallel. The front clamping plate 35 is arranged between the front side plate 34 and the rear clamping plate 36. The front clamping plate 35 and the rear clamping plate 36 respectively constitute the two clamping plates 32. One end of the front side plate 34 is connected to one end of the rear clamping plate 36 through a left side plate 37, and the other end of the rear clamping plate 36 is spaced apart from the front clamping plate 35 to avoid the spring sheet 2 from being inserted into the clamping groove 33. One end of the front clamping plate 35 is spaced apart from the left side plate 37, and the other end of the front clamping plate 35 is connected to the front clamping plate 35 through a right side plate 38. A screw sleeve 39 is provided on the side of the front side plate 34 facing the front clamping plate 35, and a threaded hole 31 cooperating with the screw 4 is provided on the screw sleeve 39. The screw at one end of the screw 4 passes through the front side plate 34 from the threaded hole 31, and the outer diameter of the nut at the other end of the screw 4 is slightly larger than the inner diameter of the operating hole 40 on the wiring frame 1, so as to prevent the nut of the screw 4 from passing through the operating hole 40 and ensure that the nut of the screw 4 is limited in the wiring frame 1. When the screw 4 rotates, the front side plate 34 drives the wiring clamp 3 to move through the thread engagement with the threaded hole 31. At the same time, the left side plate 37 and the right side plate 38 on both sides of the wiring clamp 3 slide with the two side plates 11 of the wiring frame 1, which can not only prevent the wiring clamp 3 from rotating with the screw 4, but also provide a guide for the reciprocating motion of the wiring clamp 3.

[0036] Furthermore, the front clamping plate 35 is correspondingly arranged between the spring sheet 2 and the limiting plate 13 of the wiring frame 1, and one end of the front clamping plate 35 away from the spring sheet 2 cooperates with the side of the limiting plate 13, one end of the rear clamping plate 36 extends to one side of the spring sheet 2, and the other end of the rear clamping plate 36 is spaced from the side of the limiting plate 13 to form a gap 360, and one end of the front side plate 34 is inserted between the end face of the limiting plate 13 and the connecting plate 12. The gap 360 can not only reduce the friction between the wiring clamp 3 and the wiring frame 1, but also make one end of the rear clamping plate 36 extend to one side of the spring sheet 2, so that the stroke is shorter when pushing the spring sheet 2, and it is easier to contact.

[0037] See also Figure 4 The preferred embodiment of the wiring board 6 is shown, the two side plates 11 of the wiring frame 1 extend upward at the end away from the screw 4 and form a left cheek plate 11a and a right cheek plate 11b respectively, a space for accommodating the wire 7 is formed between the left cheek plate 11a and the right cheek plate 11b, and the wiring board 6 is in an L-shaped structure and is buckled at the top corner of the left cheek plate 11a and the right cheek plate 11b at the end away from the screw 4. The wiring board 6 of this embodiment is connected between the two side plates 11, and the two side plates 11 and the wiring board 6 are assembled as a whole, and no additional parts are required to connect the wiring board 6 and the wiring frame 1, and the side of the wiring board 6 away from the side plate 11 is limitedly matched with the partition 8.

[0038] Specifically, the terminal block 6 includes a top terminal block 6a respectively matched with the top surfaces of the left cheek plate 11a and the right cheek plate 11b, and a rear terminal block 6b formed by bending downward at one end of the top terminal block 6a away from the screw 4. A limiting through hole 61 is provided on the left cheek plate 11a, and an avoidance groove 62 is provided at a position of the right cheek plate 11b corresponding to the limiting through hole 61. A side claw 63 is provided on the side of the avoidance groove 62. The side claw 63 and the bottom surface of the avoidance groove 62 are spaced apart to form a clamping groove 67. The side edge of one side of the top terminal block 6a protrudes toward the left cheek plate 11a to form a limiting boss 64 matched with the limiting through hole 61. The side edge of the other side of the top terminal block 6a is bent toward the right cheek plate 11b to form a top clamping plate 65. The end of the top clamping plate 65 is provided with a top clamping claw 66 ( Figure 2 );

[0039] During assembly, the terminal block 6 is perpendicular to the side plate 11, so that the side edge of the limiting boss 64 on one side of the terminal block 6 passes through the top of the right cheek plate 11b, and the limiting boss 64 is inserted into the limiting through hole 61. At the same time, the top clamping plate 65 slides into the avoidance groove 62 from the side, so that the top clamping claw 66 is inserted into the clamping groove 67 from the side and cooperates with the side clamping claw 63 to limit the position, and the side surfaces on both sides of the top clamping plate 65 are flush with the side surfaces on both sides of the right cheek plate 11b.

[0040] The above content is a further detailed description of the invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, several simple deductions or substitutions can be made without departing from the concept of the invention, which should be regarded as falling within the scope of protection of the invention.

Claims

1. A terminal block, characterized in that: The invention comprises a wiring frame (1), a spring sheet (2), a wiring clamp (3) and a screw (4) respectively arranged in the wiring frame (1); the axial direction of the screw (4) is limited by the wiring frame (1); one end of the wiring clamp (3) is provided with a threaded hole (31) threadedly connected to the screw (4); when the screw (4) rotates, the wiring clamp (3) can be driven to move in the wiring frame (1); the spring sheet (2) comprises a pivoting portion (21) rotatably connected to the wiring frame (1), a wire pressing portion (22) cooperating with the wiring board (6), and a thread pressing portion (22) cooperating with the wiring clamp (3). The power part (23) of the spring sheet (2) is driven by the screw (4), and the wire (7) is inserted between the wire pressing part (22) and the terminal board (6). When the screw (4) rotates to one side, it drives the wiring clamp (3) to push the power part (23) of the spring sheet (2) to rotate to one side, so that the wire pressing part (22) of the spring sheet (2) is close to the terminal board (6) to fix the wire (7); when the screw (4) rotates in the opposite direction, it drives the wiring clamp (3) to push the power part (23) of the spring sheet (2) to rotate in the opposite direction, so that the wire pressing part (22) of the spring sheet (2) is away from the terminal board (6) to loosen the wire (7); The wiring clamp (3) is provided with two clamping plates (32) arranged opposite to each other, and the two clamping plates (32) are spaced to form a clamping groove (33). The power part (23) of the spring sheet (2) is inserted into the clamping groove (33). When the screw (4) rotates to one side to drive the wiring clamp (3) to move, the clamping plate (32) on one side pushes the power part (23) of the spring sheet (2) to drive the spring sheet (2) to rotate to one side, so that the wire pressing part (22) is close to the wiring board (6) to fix the wire (7); when the screw (4) rotates in the opposite direction to drive the wiring clamp (3) to move in the opposite direction, the clamping plate (32) on the other side pushes the power part (23) of the spring sheet (2) to drive the spring sheet (2) to rotate to the other side, so that the wire pressing part (22) is away from the wiring board (6) to loosen the wire (7).

2. The terminal block according to claim 1, characterized in that: It comprises two stacked spring sheets (2), wherein the two spring sheets (2) have different lengths, and locking steps (24) facing the wire (7) are formed at the ends of the two spring sheets (2).

3. The terminal block according to claim 1, characterized in that: The wiring clamp (3) comprises a front side plate (34), a front clamping plate (35) and a rear clamping plate (36) which are arranged in parallel. The front clamping plate (35) is arranged between the front side plate (34) and the rear clamping plate (36). The front clamping plate (35) and the rear clamping plate (36) respectively constitute the two clamping plates (32). One end of the front side plate (34) is connected to one end of the rear clamping plate (36) through a left side plate (37). The other end of the rear clamping plate (36) is arranged to be spaced apart from the front clamping plate (35) to avoid the spring sheet (2) from being inserted into the clamping groove (33). One end of the front clamping plate (35) is spaced apart from the left side plate (37). The other end of the front clamping plate (35) is connected to the front clamping plate (35) through a right side plate (38). A screw sleeve (39) is arranged on the side of the front side plate (34) facing the front clamping plate (35). The screw sleeve (39) is provided with a threaded hole (31) matched with the screw (4).

4. The connection terminal according to claim 3, characterized in that: The wiring frame (1) is in a U-shaped structure, comprising two side panels (11) arranged opposite to each other and a connecting plate (12) connected between the ends of the two side panels (11), and a limiting plate (13) for limiting the wiring clamp (3) is respectively provided on the side edges of one side of the two side panels (11), and the wiring board (6) is connected between the side edges of the other side of the two side panels (11) and arranged opposite to the wire pressing portion (22).

5. The connection terminal according to claim 4, characterized in that: The front clamping plate (35) is correspondingly arranged between the spring sheet (2) and the limiting plate (13) of the wiring frame (1); one end of the front clamping plate (35) away from the spring sheet (2) cooperates with the side surface of the limiting plate (13); one end of the rear clamping plate (36) extends to one side of the spring sheet (2); the other end of the rear clamping plate (36) is spaced from the side surface of the limiting plate (13) to form a gap (360).

6. The connection terminal according to claim 1, characterized in that: The cross section of the spring sheet (2) is in a V-shaped structure. The pivot portion (21) of the spring sheet (2) is connected between the wire pressing portion (22) and the power portion (23) and is bent toward a side close to the screw (4). The other ends of the wire pressing portion (22) and the power portion (23) are respectively inclined toward a side away from the screw (4). A pivot shaft (20) is provided in the middle of the wiring frame (1), and the pivot portion (21) is sleeved on the pivot shaft (20) for rotational cooperation.

7. The connection terminal according to claim 1, characterized in that: The invention comprises two spring sheets (2) arranged in a stacked manner, wherein the two spring sheets (2) are respectively an upper spring sheet (2a) and a lower spring sheet (2b); a pivoting portion (21) of the upper spring sheet (2a) is located outside the pivoting portion (21) of the lower spring sheet (2b); a wire pressing portion (22) of the upper spring sheet (2a) is located on a side of the wire pressing portion (22) of the lower spring sheet (2b) close to a wiring board (6); the length of the wire pressing portion (22) of the upper spring sheet (2a) is shorter than the length of the wire pressing portion (22) of the lower spring sheet (2b); and a wire pressing portion (22) of the upper spring sheet (2a) and a wire pressing portion (22) of the lower spring sheet (2b) are connected to each other. A locking step (24) is formed at the upper spring sheet (2a); the power part (23) of the upper spring sheet (2a) is located at a side of the power part (23) of the lower spring sheet (2b) close to the screw (4); the length of the power part (23) of the upper spring sheet (2a) is less than the length of the power part (23) of the lower spring sheet (2b); a clearance step (25) is formed at the connection between the power part (23) of the upper spring sheet (2a) and the power part (23) of the lower spring sheet (2b); the end of the power part (23) of the lower spring sheet (2b) is bent toward the clearance step (25) to form a transition part (26); the curved surface on the outer side of the transition part (26) is matched with the clamping plate (32).

8. The connection terminal according to claim 4, characterized in that: The connecting plate (12) of the wiring frame (1) is provided with an operating hole (40) corresponding to the screw (4); the side plate (11) is provided with a baffle (14) bent toward one side of the connecting plate (12); the nut of the screw (4) is limited between the baffle (14) and the connecting plate (12); the two side plates (11) of the wiring frame (1) extend upward at an end away from the screw (4) and respectively form a left cheek plate (11a) and a right cheek plate (11b); a space for accommodating a wire (7) is formed between the left cheek plate (11a) and the right cheek plate (11b); the wiring plate (6) is in an L-shaped structure and is inverted at the top angle of the left cheek plate (11a) and the right cheek plate (11b) at one end away from the screw (4).

9. The connection terminal according to claim 8, characterized in that: The wiring board (6) comprises a top wiring part (6a) respectively matched with the top surfaces of the left cheek plate (11a) and the right cheek plate (11b), and a rear wiring part (6b) formed by bending downwardly at one end of the top wiring part (6a) away from the screw (4); a limiting through hole (61) is provided on the left cheek plate (11a); an avoidance groove (62) is provided at a position corresponding to the limiting through hole (61) of the right cheek plate (11b); a side claw (63) is provided on the side of the avoidance groove (62); the side claw (63) and the bottom surface of the avoidance groove (62) are spaced apart to form a clamping groove (67); a side edge of one side of the top wiring part (6a) protrudes toward the left cheek plate (11a) to form a limiting boss (67) matched with the limiting through hole (61); 4), the side edge of the other side of the top wiring portion (6a) is bent toward the right cheek plate (11b) to form a top clamping plate (65), and the end of the top clamping plate (65) is provided with a top clamping claw (66) that cooperates with the side clamping claw (63) in limiting position; when assembling, the wiring board (6) is perpendicular to the side plate (11), so that the side edge of the limiting boss (64) on one side of the wiring board (6) passes through the top of the right cheek plate (11b), and the limiting boss (64) is inserted into the limiting through hole (61), and at the same time, the top clamping plate (65) slides into the avoidance groove (62) from the side, so that the top clamping claw (66) is inserted into the clamping groove (67) from the side to cooperate with the side clamping claw (63) in limiting position, and the side surfaces of both sides of the top clamping plate (65) are flush with the side surfaces of both sides of the right cheek plate (11b).

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