CN111682326A

CN111682326A - Connecting terminal

Info

Publication number: CN111682326A
Application number: CN202010504277.3A
Authority: CN
Inventors: 卢科军; 顾斌斌
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-09-18

Abstract

A wiring terminal comprises a wiring frame, a spring leaf, a wiring clamp and a screw, wherein the spring leaf, the wiring clamp and the screw are respectively arranged in the wiring frame, the axis direction of the screw is limited by the wiring frame, one end of the wiring clamp is provided with a threaded hole in threaded connection with the screw, the screw can drive the wiring clamp to move in the wiring frame when rotating, the spring leaf comprises a pivoting part in rotatable connection with the wiring frame, a wire pressing part matched with a wiring board and a power part inserted into a clamping groove, a wire is inserted between the wire pressing part and the wiring board, and the screw drives the wiring clamp to push the power part of the spring leaf to rotate to one side when rotating to one side so that the wire pressing part of the spring leaf is close to the; the screw drives the binding clip when the antiport drives and promotes the power portion antiport of spring leaf, makes the line ball portion of spring leaf keep away from the wiring board and unclamps the wire, and the spring leaf can overcome the frictional force with the wire and reliably rotate under the promotion of binding clip, avoids the cooperation tension and leads to the wire can't extract.

Description

Connecting terminal

Technical Field

The invention relates to the field of low-voltage electrical appliances, in particular to a wiring terminal.

Background

Low-voltage apparatus such as circuit breaker need pass through binding post access line when using, especially plug-in binding post, because installation space is limited, and the wiring direction has the requirement moreover, so need the terminal volume to be little can reliably fix the wire simultaneously. However, the wire connected to the low-voltage apparatus with a large current specification is usually thicker, and the clamping force of the elastic member such as the spring piece in the wiring terminal to the wire needs to be increased, so that not only is the counterforce on the elastic member increased, but also the space inside the wiring terminal is not enough for the elastic member to reset so as to avoid the wire, and finally, the operation force of a customer in use is too large, the operation difficulty is increased, and the operation is very inconvenient.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a wiring terminal with simple structure and high reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

a wiring terminal comprises a wiring frame, a spring leaf, a wiring clamp and a screw, wherein the spring leaf, the wiring clamp and the screw are respectively arranged in the wiring frame, the axis direction of the screw is limited by the wiring frame, one end of the wiring clamp is provided with a threaded hole in threaded connection with the screw, the screw can drive the wiring clamp to move in the wiring frame when rotating, the spring leaf comprises a pivoting part in rotatable connection with the wiring frame, a wire pressing part matched with a wiring board and a power part matched with the wiring clamp, a wire is inserted between the wire pressing part and the wiring board, and the screw drives the wiring clamp to push the power part of the spring leaf to rotate to one side when rotating to one side so that the wire pressing part of the spring leaf is close; the screw drives the binding clip to push the power part of the spring leaf to rotate reversely when rotating reversely, so that the wire pressing part of the spring leaf is far away from the wiring board to loosen the wire.

Preferably, the wiring clamp is provided with two oppositely arranged clamping plates, the two clamping plates form a clamping groove at an interval, the power part of the spring piece is inserted into the clamping groove, when the screw rotates to one side to drive the wiring clamp to move, the power part of the spring piece is pushed by the clamping plate at one side to drive the spring piece to rotate to one side, so that the wire pressing part is close to the wiring board to fix the wire; when the screw rotates reversely to drive the jointing clamp to move reversely, the power part pushing the spring piece through the clamping plate on the other side drives the spring piece to rotate towards the other side, so that the wire pressing part is far away from the wiring board to loosen the wire.

Preferably, the cable connector comprises two spring pieces which are arranged in a stacked mode, the length of each spring piece is different, and a locking step facing the wire is formed at the end portion of each spring piece.

Preferably, the binding clip includes parallel arrangement's preceding curb plate, front plate and back splint, and the front plate setting constitutes respectively between preceding curb plate and back splint front plate and back splint two splint, the one end of preceding curb plate is passed through the left side board and is connected with the one end of back splint, the other end and the front plate interval of back splint set up and are used for dodging the spring leaf and insert the double-layered groove, the one end and the left side inter-plate interval of front plate set up, the other end of front plate passes through the right side board and is connected with the front plate, the side of preceding curb plate towards preceding splint is equipped with the swivel nut, be equipped with on the swivel nut with screw complex screw hole.

Preferably, the wiring frame becomes U font structure, and the wiring frame includes the curb plate of two relative settings and connects the connecting plate between two curb plate tip, is equipped with the limiting plate that is used for spacing binding clip respectively at the side of two curb plate one sides, and the wiring board is connected and is set up with the line ball portion is relative between the side of two curb plate opposite sides.

Preferably, the front splint correspond to set up between the limiting plate of spring leaf and wire frame, and the one end that the spring leaf was kept away from to the front splint cooperates with the side of limiting plate, one side of spring leaf is stretched to the one end of back splint, and the other end of back splint sets up and forms the clearance with the side interval of limiting plate.

Preferably, the cross section of the spring piece is of a V-shaped structure, the pivoting part of the spring piece is connected between the wire pressing part and the power part and is bent towards one side close to the screw, the other ends of the wire pressing part and the power part are respectively inclined towards one side far away from the screw, a pivoting shaft is arranged in the middle of the wiring frame, and the pivoting part is sleeved on the pivoting shaft and is in running fit with the pivoting shaft.

Preferably, the device comprises two spring pieces which are arranged in a stacked mode, wherein the two spring pieces are an upper spring piece and a lower spring piece respectively, a pivoting part of the upper spring piece is positioned on the outer side of a pivoting part of the lower spring piece, a wire pressing part of the upper spring piece is positioned on one side, close to a wiring board, of a wire pressing part of the lower spring piece, the length of the wire pressing part of the upper spring piece is smaller than that of the wire pressing part of the lower spring piece, and a locking step is formed at the connecting position of the wire pressing part of the upper spring; the power part of the upper spring piece is positioned on one side, close to the screw, of the power part of the lower spring piece, the length of the power part of the upper spring piece is smaller than that of the power part of the lower spring piece, a yielding step is formed at the joint of the power part of the upper spring piece and the power part of the lower spring piece, the end part of the power part of the lower spring piece is bent towards the yielding step to form a transition part, and the curved surface on the outer side of the transition part is matched with the clamping plate.

Preferably, an operation hole corresponding to the screw is formed in the connecting plate of the wiring frame, the side plate is provided with a baffle bent towards 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 upwards at one end far away from the screw and respectively form a left cheek plate and a right cheek plate, a space for accommodating a lead is formed between the left cheek plate and the right cheek plate, and the wiring board is reversely buckled at the vertex angle of one end far away from the screw of the left cheek plate and the right cheek plate in an L-shaped structure.

Preferably, the wiring board comprises a top wiring part and a rear wiring part, wherein the top wiring part is respectively matched with the top surfaces of the left cheek plate and the right cheek plate, the rear wiring part is formed by bending one end, away from the screw, of the top wiring part downwards, a limiting through hole is formed in the left cheek plate, an avoiding groove is formed in the position, corresponding to the limiting through hole, of the right cheek plate, a side clamping jaw is arranged on the side face of the avoiding groove, clamping grooves are formed in the bottom face of the avoiding groove at intervals, a limiting boss matched with the limiting through hole is formed by protruding the side edge of one side of the top wiring part to the left cheek plate, a top clamping plate is formed by bending the side edge of the other side of the top wiring part to the right cheek plate, and; during assembly, the wiring board is perpendicular to the side plates, the side edge of the limiting boss on one side of the wiring board penetrates through the upper portion of the right cheek plate, the limiting boss is inserted into the limiting through hole, the top clamping plate slides into the avoiding groove from the side face, the top clamping claw is inserted into the clamping groove from the side face and is in limiting fit with the side clamping claw, and the side faces of the two sides of the top clamping plate are flush with the side faces of the two sides of the right cheek plate.

According to the wiring terminal, the screw drives the spring piece to move through the wiring clamp, when a lead is thick, the spring piece can overcome the friction force with the lead to reliably rotate under the pushing of the wiring clamp, so that the spring piece is reliably separated from the lead, and the problem that the lead cannot be pulled out due to the fact that the spring piece is tightly matched with the lead is avoided.

In addition, the jointing clamp 3 pushes the spring piece 2 to move through the two clamping plates 32 respectively, wherein the clamping plate 32 on one side is used for pushing the spring piece 2 to fix the lead 7, the clamping plate 32 on the other side is used for pushing the spring piece 2 to loosen the lead 7, the spring piece 2 can overcome the friction force with the lead 7 and reliably rotate under the pushing of the clamping plate 32, the clamping groove 33 can reserve a larger space for the spring piece 2, after the spring piece 2 is stressed, the clamping plate 32 and the spring piece 2 are stressed in a line following manner, and the larger space can reduce the deformation of the spring piece 2.

In addition, the two spring pieces with different lengths are stacked to form the locking step facing the lead, when the lead is thick, the locking step can enable the end parts of the two spring pieces to respectively fix the lead outside a certain distance, and the lead is guaranteed to be reliably fixed.

Drawings

Fig. 1 is a cross-sectional view of a terminal block according to an embodiment of the present invention;

fig. 2 is a schematic view of a terminal and wire mating according to an embodiment of the invention;

fig. 3 is a schematic structural diagram of a connection terminal according to an embodiment of the invention;

fig. 4 is an exploded view of a terminal according to an embodiment of the invention;

fig. 5 is a top view of a clip according to an embodiment of the invention.

Detailed Description

The following description will further describe embodiments of the connection terminal according to the present invention with reference to the embodiments shown in fig. 1 to 5. The inventive connecting terminal is not limited to the description of the following embodiments.

As shown in fig. 1-3, the wiring terminal created by the invention comprises a wiring frame 1, and a spring leaf 2, a wiring clip 3 and a screw 4 which are respectively arranged in the wiring frame 1, wherein the axial direction of the screw 4 is limited by the wiring frame 1, one end of the wiring clip 3 is provided with a threaded hole 31 in threaded connection with the screw 4, the screw 4 can drive the wiring clip 3 to move in the wiring frame 1 when rotating, the spring leaf 2 comprises a pivot part 21 in rotary connection with the wiring frame 1, a wire pressing part 22 matched with a wiring board 6 and a power part 23 matched with the wiring clip 3, a wire 7 is inserted between the wire pressing part 22 and the wiring board 6, and the screw 4 drives the wiring clip 3 to drive the power part 23 of the spring leaf 2 to rotate towards one side when rotating towards one side, so that the wire pressing part 22 of the spring leaf 2 is close to the wiring; when the screw 4 is driven by reverse rotation, the jointing clamp 3 is driven to push the power part 23 of the spring piece 2 to rotate reversely, so that the wire pressing part 22 of the spring piece 2 is far away from the wiring board 6 to loosen the wire 7.

According to the wiring terminal, the screw 4 drives the spring piece 2 to move through the wiring clamp 3, when the lead 7 is thicker, the spring piece 2 can overcome the friction force with the lead 7 and reliably rotate under the pushing of the wiring clamp 3, so that the spring piece 2 and the lead 7 are reliably separated, and the problem that the lead 7 cannot be pulled out due to the fact that the spring piece 2 is tightly matched with the lead 7 is avoided.

Furthermore, two oppositely arranged clamping plates 32 are arranged on the jointing clamp 3, clamping grooves 33 are formed at intervals between the two clamping plates 32, the power part 23 of the spring piece 2 is inserted into the clamping grooves 33, when the screw 4 rotates towards one side and drives the jointing clamp 3 to move, the power part 23 of the spring piece 2 is pushed by the clamping plate 32 at one side to drive the spring piece 2 to rotate towards 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 reversely to drive the binding clip 3 to move reversely, the power part 23 of the spring piece 2 is pushed by the clamping plate 32 at the other side to drive the spring piece 2 to rotate towards the other side, so that the wire pressing part 22 is far away from the wiring board 6 to loosen the wire 7. The binding clip 3 pushes the spring piece 2 to move through the two clamping plates 32 respectively, wherein the clamping plate 32 on one side is used for pushing the spring piece 2 to fix the lead 7, the clamping plate 32 on the other side is used for pushing the spring piece 2 to loosen the lead 7, the spring piece 2 can overcome the friction force with the lead 7 and reliably rotate under the pushing of the clamping plate 32, the clamping groove 33 can reserve a larger space for the spring piece 2, after the stress of the spring piece 2, the clamping plate 32 and the spring piece 2 are subjected to line following stress, and the larger space can reduce the deformation of the spring piece 2.

In the preferred embodiment shown in fig. 3-4, the wire frame 1 is in a U-shaped structure, the wire frame 1 includes two side plates 11 disposed opposite to each other and a connecting plate 12 connected between the ends of the side plates 11, the side edges of one side of the side plates 11 are respectively provided with a limiting plate 13, the connecting plate 6 is connected between the side edges of the other side of the side plates 11, the connecting plate 12 is provided with an operation hole 40 corresponding to the nut of the screw 4, at least one side of the side plate 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, the screw 4 is prevented from moving along the axial direction, a tool such as a screwdriver can pass through the operation hole 40 to screw the screw 4, since the screw 4 is limited along the axial direction, the wire clip 3 is driven to approach and depart from the screw 4 by the thread engagement action of the screw 4 and the threaded hole 31, to achieve the fixing and loosening of the wire 7.

Referring to fig. 1, 2 and 4, the section of the spring plate 2 of the embodiment is in a V-shaped structure, the pivoting portion 21 of the spring plate 2 is connected between the wire pressing portion 22 and the power portion 23 and is bent to one side close to the screw 4, the wire pressing portion 22 and the other end of the power portion 23 connected with the pivoting portion 21 are respectively inclined to one side far away from the screw 4, the middle of the wire frame 1 is provided with a pivoting shaft 20 connected between the two side plates 11, the pivoting portion 21 is sleeved on the pivoting shaft 20 and is in rotating fit, the screw 4 and the wire clamp 3 are arranged on one side of the pivoting shaft 20 and are matched with the power portion 23, and the wiring board 6 is arranged on the other side of the. As another embodiment of the spring plate 2, the pivot portion 21 and the wire pressing portion 22 may be disposed at two ends, respectively, the power portion 23 is connected between the pivot portion 21 and the wire pressing portion 22, and the wire clip 3 may drive the spring plate 2 to swing up and down around the power portion 23 through the power portion 23, which falls within the protection scope of the present invention.

Referring to the direction shown in fig. 2, when the binding clip 3 moves downward away from the screw 4, the upper clamping plate 32 pushes the spring piece 2 to rotate counterclockwise, so that the wire pressing portion 22 of the spring piece 2 approaches the wiring board 6 to clamp the wire 7 between the wire pressing portion 22 and the wiring board 6; when the terminal clamp 3 moves upward near the screw 4, the lower clamping plate 32 pushes the spring piece 2 to rotate clockwise, so that the pressing line part 22 of the spring piece 2 is far away from the wiring board 6 to release the lead 7. It is understood that the pressing portion 22 may be inclined toward the screw 4, i.e. the side of the pressing portion 22 opposite to the side is used for clamping the wire 7, and the invention is also within the protection scope of the invention. At this time, when the binding clip 3 moves downward away from the screw 4, the upper clamping plate 32 pushes the spring piece 2 to rotate counterclockwise, so that the wire pressing part 22 of the spring piece 2 is close to the wiring board 6, and the wire 7 is clamped between the wire pressing part 22 and the wiring board 6; when the binding clip 3 moves upward near the screw 4, the lower clamping plate 32 pushes the spring piece 2 to rotate clockwise, so that the pressing line part 22 of the spring piece 2 is far away from the wiring board 6, and the lead 7 is loosened.

In the embodiment of the spring plate 2 shown in fig. 1, the spring plate 2 is formed by bending a spring plate, the pivot part 21 is positioned between the wire pressing part 22 and the power part 23 and protrudes to one side to be bent into a large half arc, the wire pressing part 22 and the power part 23 are respectively inclined to one side far away from the screw 4, and the end part of the power part 23 tilts to one side close to the screw 4.

Further, as shown in fig. 2 and 4, the embodiment includes two spring pieces 2 arranged in a stacked manner, and the two spring pieces 2 have different lengths, and a locking step 24 facing the lead wire 7 is formed at an end of one end of the wire pressing portion 22 of the two spring pieces 2. The angle that the wire 7 promoted the spring leaf 2 to rotate when thick is big, leads to the contained angle between spring leaf 2 and the wiring board 6 to be less, and spring leaf 2 and wire 7 are the line contact this moment, and stability is relatively poor, can not reliably fix wire 7, and through the locking step 24 that forms on two spring leaves 2, can make the tip of two spring leaves 2 fix wire 7 respectively outside the certain interval, guarantees reliably to fix wire 7.

Specifically, the two stacked spring pieces 2 are an upper spring piece 2a and a lower spring piece 2b respectively, the pivot part 21 of the upper spring piece 2a is positioned at the outer side of the pivot part 21 of the lower spring piece 2b, the wire pressing part 22 of the upper spring piece 2a is positioned at one side of the wire pressing part 22 of the lower spring piece 2b close to the wiring board 6, the length of the wire pressing part 22 of the upper spring piece 2a is smaller than that of the wire pressing part 22 of the lower spring piece 2b, and a locking step 24 is formed at the joint of the wire pressing part 22 of the upper spring piece 2a and the wire pressing part 22 of the lower spring piece 2 b;

the power part 23 of the upper spring piece 2a is positioned on one side, close to the screw 4, of the power part 23 of the lower spring piece 2b, the length of the power part 23 of the upper spring piece 2a is smaller than that of the power part 23 of the lower spring piece 2b, a yielding step 25 is formed at the connecting position of the power part 23 of the upper spring piece 2a and the power part 23 of the lower spring piece 2b, the end part of the power part 23 of the lower spring piece 2b is bent towards the yielding step 25 to form a transition part 26, and the curved surface on the outer side of the transition part 26 is matched with the clamping plate 32.

When the transition part 26 is pushed by the lower clamping plate 32, the curved surface on the outer side of the transition part 26 can roll on the contact surface of the clamping plate 32 along with the rotation of the spring piece 2, so that the friction force between the spring piece 2 and the clamping plate 32 is reduced, the operating force for screwing the screw 4 can be reduced, the spring piece 2 and the jointing clamp 3 can be prevented from being damaged, and the service life is prolonged.

Referring to fig. 4-5, a preferred embodiment of the binding clip 3 is shown, the binding clip 3 is formed by bending a long plate structure integrally, the binding clip 3 includes 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 form the two clamping plates 32, one end of the front side plate 34 is connected with 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 at an interval with the front clamping plate 35 for avoiding the insertion of the spring plate 2 into the clamping groove 33, one end of the front clamping plate 35 is arranged at an interval with the left side plate 37, the other end of the front clamping plate 35 is connected with the front clamping plate 35 through a right side plate 38, a threaded sleeve 39 is arranged on the side of the front. The screw rod of 4 one ends of screw passes preceding curb plate 34 from screw hole 31, the external diameter of 4 other ends of screw nuts of screw is slightly more than the internal diameter of handle hole 40 on the wire frame 1, prevent that the nut of screw 4 from passing handle hole 40, guarantee that the nut of screw 4 is spacing in wire frame 1, screw 4 drives preceding curb plate 34 through the screw engagement effect with screw hole 31 when rotating and drives binding clip 3 and remove, left side board 37 and right side board 38 of binding clip 3 both sides and two curb plates 11 sliding fit of wire frame 1 simultaneously, not only can prevent that binding clip 3 from rotating along with screw 4, still can provide the guide effect for binding clip 3 reciprocating motion.

Further, preceding splint 35 corresponds the setting between the limiting plate 13 of spring leaf 2 and wire frame 1, and the one end that spring leaf 2 was kept away from to preceding splint 35 and the side cooperation of limiting plate 13, one side of spring leaf 2 is stretched to the one end of back splint 36, and the other end of back splint 36 sets up and forms clearance 360 with the side interval of limiting plate 13, between the terminal surface of limiting plate 13 and connecting plate 12 was inserted to the one end of preceding curb plate 34, and clearance 360 not only can reduce the frictional force between wire clip 3 and the wire frame 1, makes the one end of back splint 36 stretch to one side of spring leaf 2 moreover, and more the stroke is shorter when promoting spring leaf 2, easy contact.

Referring to fig. 4, a preferred embodiment of the wiring board 6 is shown, wherein 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 the lead wires 7 is formed between the left cheek plate 11a and the right cheek plate 11b, and the wiring board 6 is reversely buckled at a vertex angle of the end of the left cheek plate 11a and the right cheek plate 11b away from the screw 4 in an L-shaped structure. The wiring board 6 of this embodiment is connected between two curb plates 11, and two curb plates 11 are as an organic whole with wiring board 6 assembly, do not need extra part to connect wiring board 6 and terminal frame 1, and the side and the spacing cooperation of baffle 8 that the curb plate 11 was kept away from to wiring board 6.

Specifically, the wiring board 6 includes a top wiring portion 6a respectively matched with top surfaces of the left cheek plate 11a and the right cheek plate 11b, and a rear wiring portion 6b formed by bending one end of the top wiring portion 6a away from the screw 4 downward, the left cheek plate 11a is provided with a limiting through hole 61, the right cheek plate 11b is provided with an avoiding groove 62 corresponding to the limiting through hole 61, a side jaw 63 is provided on a side surface of the avoiding groove 62, the side jaw 63 and a bottom surface of the avoiding groove 62 are provided at an interval to form a clamping groove 64, a side edge on one side of the top wiring portion 6a protrudes to the left cheek plate 11a to form a limiting boss 64 matched with the limiting through hole 61, a side edge on the other side of the top wiring portion 6a is bent to the right cheek plate 11b to form a top clamping plate 65, and an end portion of the top clamping plate 65 is provided with a top clamping jaw 66 (fig.;

during assembly, the wiring board 6 is perpendicular to the side plates 11, so that the side edge of the limiting boss 64 on one side of the wiring board 6 penetrates through the upper side of the right cheek plate 11b, the limiting boss 64 is inserted into the limiting through hole 61, meanwhile, the top clamping board 65 slides into the avoiding groove 62 from the side surface, the top clamping claws 66 are inserted into the clamping grooves 64 from the side surface and are in limiting fit with the side clamping claws 63, and the side surfaces of the two sides of the top clamping board 65 are flush with the side surfaces of the two sides of the right cheek plate 11 b.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

Claims

1. A connecting terminal is characterized in that: comprises a wiring frame (1), and a spring leaf (2), a wiring clamp (3) and a screw (4) which are respectively arranged in the wiring frame (1), wherein the axis 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) which is in threaded connection with the screw (4), the screw (4) can drive the wiring clamp (3) to move in the wiring frame (1) when rotating, the spring leaf (2) comprises a pivoting part (21) which is in rotary connection with the wiring frame (1) and a wire pressing part (22) which is matched with a wiring board (6), the power part (23) is matched with the wiring clamp (3), a lead (7) is inserted between the wire pressing part (22) and the wiring board (6), and when the screw (4) rotates towards one side, the wiring clamp (3) is driven to push the power part (23) of the spring piece (2) to rotate towards one side, so that the wire pressing part (22) of the spring piece (2) is close to the wiring board (6) to fix the lead (7); when the screw (4) rotates reversely and drives the jointing clamp (3) to push the power part (23) of the spring piece (2) to rotate reversely, the wire pressing part (22) of the spring piece (2) is far away from the wiring board (6) to loosen the wire (7).

2. The connection terminal according to claim 1, wherein: the wiring clamp (3) is provided with two oppositely arranged clamping plates (32), clamping grooves (33) are formed in the two clamping plates (32) at intervals, the power part (23) of the spring piece (2) is inserted into the clamping grooves (33), when the screw (4) rotates to one side to drive the wiring clamp (3) to move, the power part (23) of the spring piece (2) is pushed by the clamping plate (32) at one side to drive the spring piece (2) to rotate to one side, and the wire pressing part (22) is close to the wiring board (6) to fix a wire (7); when the screw (4) rotates reversely to drive the jointing clamp (3) to move reversely, the power part (23) of the spring piece (2) is pushed by the clamping plate (32) at the other side to drive the spring piece (2) to rotate towards the other side, so that the wire pressing part (22) is far away from the wiring board (6) to loosen the wire (7).

3. The connection terminal according to claim 1, wherein: the wire guiding device comprises two spring pieces (2) which are arranged in a stacked mode, the length of the two spring pieces (2) is different, and locking steps (24) facing a wire (7) are formed at the end portions of the two spring pieces (2).

4. The connection terminal according to claim 2, wherein: 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 form the two clamping plates (32), one end of the front side plate (34) is connected with one end of the rear clamping plate (36) through a left side plate (37), the other end of the rear clamping plate (36) and the front clamping plate (35) are arranged at intervals and used for avoiding the spring pieces (2) to be inserted into the clamping grooves (33), one end of the front clamping plate (35) and the left side plate (37) are arranged at intervals, and the other end of the front clamping plate (35) is connected with the front clamping plate (35) through, the side surface of the front side plate (34) facing the front clamping plate (35) is provided with a threaded sleeve (39), and the threaded sleeve (39) is provided with a threaded hole (31) matched with the screw (4).

5. The connection terminal according to claim 4, wherein: the wiring frame (1) becomes U font structure, and wiring frame (1) is equipped with limiting plate (13) that are used for spacing binding clip (3) respectively including curb plate (11) and connecting plate (12) between two curb plate (11) tip that two relative settings are drawn together to the side of two curb plate (11) one side, and wiring board (6) are connected and are set up with line ball portion (22) relatively between the side of two curb plate (11) opposite sides.

6. The connection terminal according to claim 5, wherein: preceding splint (35) correspond to set up between limiting plate (13) of spring leaf (2) and wire frame (1), and the one end that spring leaf (2) were kept away from in preceding splint (35) is cooperated with the side of limiting plate (13), one side of spring leaf (2) is stretched to the one end of back splint (36), and the other end of back splint (36) sets up and forms clearance (360) with the side interval of limiting plate (13).

7. The connection terminal according to claim 1, wherein: the cross section of the spring piece (2) is of a V-shaped structure, a pivoting part (21) of the spring piece (2) is connected between a wire pressing part (22) and a power part (23) and is bent towards one side close to the screw (4), the other ends of the wire pressing part (22) and the power part (23) are respectively inclined towards one side far away from the screw (4), a pivoting shaft (20) is arranged in the middle of the wiring frame (1), and the pivoting part (21) is sleeved on the pivoting shaft (20) and is in rotating fit with the pivoting shaft.

8. The connection terminal according to claim 1, wherein: the spring piece structure comprises two spring pieces (2) which are arranged in a stacked mode, wherein the two spring pieces (2) are an upper spring piece (2a) and a lower spring piece (2b) respectively, a pivoting part (21) of the upper spring piece (2a) is located on the outer side of the pivoting part (21) of the lower spring piece (2b), a wire pressing part (22) of the upper spring piece (2a) is located on one side, close to a wiring board (6), of the wire pressing part (22) of the lower spring piece (2b), the length of the wire pressing part (22) of the upper spring piece (2a) is smaller than that of the wire pressing part (22) of the lower spring piece (2b), and a locking step (24) is formed at the connecting position of the wire pressing part (22) of the upper spring piece (2a) and the wire; the power part (23) of the upper spring piece (2a) is positioned on one side, close to the screw (4), of the power part (23) of the lower spring piece (2b), the length of the power part (23) of the upper spring piece (2a) is smaller than that of the power part (23) of the lower spring piece (2b), an abdicating step (25) is formed at the connecting position of the power part (23) of the upper spring piece (2a) and the power part (23) of the lower spring piece (2b), the end part of the power part (23) of the lower spring piece (2b) is bent towards the abdicating step (25) to form a transition part (26), and the curved surface on the outer side of the transition part (26) is matched with the clamping plate (32).

9. The connection terminal according to claim 5, wherein: an operation hole (40) corresponding to the screw (4) is formed in the connecting plate (12) of the wiring frame (1), the side plate (11) is provided with a baffle (14) bending towards one side of the connecting plate (12), and 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 upwards at one end far away from the screw (4) and respectively form a left cheek plate (11a) and a right cheek plate (11b), a space for accommodating the lead (7) is formed between the left cheek plate (11a) and the right cheek plate (11b), and the wiring board (6) is reversely buckled at the vertex angle of one end far away from the screw (4) of the left cheek plate (11a) and the right cheek plate (11b) in an L-shaped structure.

10. The connection terminal according to claim 9, wherein: 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 portion (6b) formed by bending downward the end of the top wiring portion (6a) away from the screw (4), a limiting through hole (61) is formed in the left cheek plate (11a), an avoiding groove (62) is formed in the position, corresponding to the limiting through hole (61), of the right cheek plate (11b), a side clamping jaw (63) is arranged on the side face of the avoiding groove (62), clamping grooves (64) are formed in the bottom faces of the side clamping jaw (63) and the avoiding groove (62) at intervals, a limiting boss (64) matched with the limiting through hole (61) is formed by protruding the side edge of one side of the top connection part (6a) towards the left cheek plate (11a), a top clamping plate (65) is formed by bending the side edge of the other side of the top connection part (6a) towards the right cheek plate (11b), and a top clamping jaw (66) in limiting fit with the side clamping jaw (63) is arranged at the end; during assembly, the wiring board (6) is perpendicular to the side plates (11), the side edge of a limiting boss (64) on one side of the wiring board (6) penetrates through the upper portion of the right cheek plate (11b), the limiting boss (64) is inserted into the limiting through hole (61), meanwhile, the top clamping plate (65) slides into the avoiding groove (62) from the side face, the top clamping jaw (66) is inserted into the clamping groove (64) from the side face and is in limited fit with the side clamping jaw (63), and the side faces of the two sides of the top clamping plate (65) are flush with the side faces of the two sides of the right cheek plate (11 b).