Blade dual-inlet tool-less wiring terminal

Abstract

The application discloses a kind of tool-free wiring terminal of double line of gate type, including insulating shell, rotating handle, clamping piece, elastic sheet and handle corner positioning device, the fixed end of clamping piece and the fixed end of elastic sheet are fixedly installed in insulating shell, the movable end of clamping piece is the clamping channel of opening and can be elastically contracted, the movable end of elastic sheet can be elastically tightly resisted the fixed end of clamping piece, rotating handle can be rotatably installed on insulating shell, the driving part of one end of rotating handle can drive the movable end of elastic sheet to elastically deform and separate from the fixed end surface of clamping piece with rotating handle rotation by a specified distance, handle corner positioning device can stop positioning to rotating handle that is rotated to a specified angle, insulating shell is provided with needle hole that is communicated with the clamping channel of clamping piece in direct opposite and wire insertion port that is opposite to the movable end of elastic sheet, the application can meet the demand of multiple different line diameter wires being accessed to the same potential, wiring is convenient, and wire clamping is stable.

Description

Technical Field

[0001] This invention relates to a connector, and more particularly to a knife-type dual-input tool-free terminal block. Background Technology

[0002] Existing dual-input spring-loaded terminal blocks, such as Figure 1 The device has a push-button handle, but wiring and wire retrieval require pressing a tool onto the corresponding spring contacts on each handle. Furthermore, when pressing down the handle for wiring, a matching tool is used to press down for an extended period until the wiring is complete. This results in the wire being at a certain height above the PCB board during wiring, and the wire diameter, due to gravity, affects the spring contacts' grip, leading to instability. It also increases the wiring space required, resulting in wasted space. Additionally, the efficiency of wiring is typically reduced, and the prolonged pressing degrades the user experience.

[0003] Existing terminal block wiring methods, such as Figure 2 As shown, there is no push handle, and a tool (flathead screwdriver) is needed to open the spring when wiring, which is extremely inconvenient to use. Summary of the Invention

[0004] To overcome the above-mentioned defects, the present invention provides a knife-type dual-input tool-free terminal block. This knife-type dual-input tool-free terminal block allows for single-handed wiring, improving the user experience. The low wire diameter distance from the PCB board avoids the instability of the wire clamping due to gravity shaking.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a knife-type dual-input tool-free terminal block, comprising an insulating shell, a rotating handle, a clamp, a spring, and a handle angle positioning device. The fixed ends of the clamp and the spring are fixedly installed inside the insulating shell. The movable end of the clamp is an open clamping channel that can elastically contract. The movable end of the spring can elastically abut against the fixed end of the clamp. Both the clamp and the spring are made of conductive material. The rotating handle is rotatably mounted on the insulating shell. The operating end of the rotating handle extends out of the insulating shell. A driving part is formed on one end of the rotating handle inside the insulating shell. The driving part can cause the movable end of the spring to elastically deform and disengage from the fixed end surface of the clamp by a set distance as the rotating handle rotates. The handle angle positioning device is provided on the insulating shell or the spring. The handle angle positioning device can stop and position the rotating handle when it is rotated to a set angle. The insulating shell is provided with a pin hole that communicates with the clamping channel of the clamp. The insulating shell is also provided with a wire socket that is opposite to the movable end of the spring.

[0006] As a further improvement of the present invention, the driving part on the rotating handle is an eccentric wheel structure. The outer circumferential surface of the eccentric wheel structure is in close contact with the side surface of the contact clip fixed end of the movable end of the spring. When the rotating handle is rotated to a set angle so that the movable end of the spring is disengaged from the fixed end of the clip, the highest surface of the eccentric wheel structure on the rotating handle can be in parallel contact with the side wall of the movable end of the spring.

[0007] As a further improvement of the present invention, a rotating shaft is formed on the other end of the rotating handle, the eccentric wheel structure is integrally formed on the rotating shaft, a handle receiving groove is formed inside the insulating shell, and the rotating shaft at the other end of the rotating handle is rotatably supported in the handle receiving groove.

[0008] As a further improvement of the present invention, the spring sheet is a V-shaped structure formed integrally by bending the fixed end and the movable end. The corner of the V-shaped structure of the spring sheet is an arc-shaped structure, and a concave arc surface matching the shape of the protrusion of the eccentric wheel structure is formed on the side wall of the movable end of the spring sheet.

[0009] As a further improvement of the present invention, the spring sheet has a first movable end and a second movable end formed in parallel intervals, and the clamping plate has a first contact end and a second contact end formed in parallel intervals. The first movable end and the second movable end of the spring sheet elastically abut against the surfaces of the first contact end and the second contact end on the fixed end of the clamping plate, respectively. The rotating handle has two driving parts, namely a first driving part and a second driving part set at intervals. The first driving part and the second driving part can simultaneously drive the first movable end and the second movable end on the spring sheet to elastically deform and disengage from the surfaces of the first contact end and the second contact end on the clamping plate. The insulating shell has a first wire socket and a second wire socket formed in parallel intervals, and the first wire socket and the second wire socket correspond to the first movable end and the second movable end of the spring sheet, respectively.

[0010] As a further improvement of the present invention, the surface of the clamping end is also provided with an inverted protrusion structure, the inclined surface of which faces the wire insertion port of the insulating shell, and the movable end of the spring plate stops on the vertical surface of the inverted protrusion structure on the side wall facing the wire insertion port.

[0011] As a further improvement of the present invention, the surface of the clamping end is further provided with a wire insertion depth limiting stop wall, which can stop the end of the wire inserted between the movable end of the spring and the surface of the clamping end.

[0012] As a further improvement of the present invention, a fixing connecting plate is integrally formed on the fixing end of the clip, and the fixing end of the spring clip is fixedly connected to the fixing connecting plate.

[0013] As a further improvement of the present invention, the fixed end of the spring sheet is provided with at least one connecting hole, and the fixed connecting plate on the fixed end of the clip has a protruding column structure formed thereon. The side wall of the fixed end of the spring sheet facing away from the movable end is tightly abutted against the surface of the fixed connecting plate of the fixed end of the clip, and the protruding column structures on the fixed connecting plate of the fixed end of the clip are inserted into the connecting holes of the fixed end of the spring sheet one by one.

[0014] As a further improvement of the present invention, the fixing connecting plate and the fixing end of the clamping piece are arranged parallel to each other along the depth direction of the clamping channel. The two sides of the fixing connecting plate are fixedly connected to the fixing end of the clamping piece through bending arms perpendicular to it to form an integral structure. The fixing end of the spring piece extends into the fixing connecting plate facing the fixing end of the clamping piece through the channel between the two bending arms. The insulating shell includes an insulating body and an insulating cover. An open cavity is formed in the insulating body. The clamping piece, the spring piece, and the other end of the rotating handle are respectively accommodated in the open cavity of the insulating body. The insulating cover can be fixedly sleeved on the outside of the open end of the insulating body. The side wall of the open cavity of the insulating body and the inner side wall of the insulating cover are jointly formed with a stop surface that matches the outline of the clamping end, the fixing connecting plate on the clamping piece, and the bending arm on the clamping piece. The fixing end of the clamping piece, the fixing connecting plate, and the bending arm are stopped and accommodated between the stop surfaces. A limiting contact surface that matches the outline of the root of the movable end of the spring piece is also formed on the side wall of the open cavity of the insulating body. The root of the movable end of the spring piece is attached to and supported on the limiting contact surface.

[0015] The beneficial effects of the invention are as follows: This invention achieves the connection and conduction of the pin and wire by setting a clamping piece for tightening the pin and a spring piece for wiring inside the insulating shell. By designing the spring piece as a multi-moving-end structure, it can meet the needs of connecting two or more wires of different diameters to the same potential. The rotating handle of this invention forms a self-locking mechanism with the moving end of the spring piece after rotating to a certain angle, allowing the spring piece to be opened by hand without tools and kept open, facilitating wiring. Wiring does not require prolonged pressing of the handle; wiring can be performed at any time after rotating the handle once. After wiring is completed, releasing the rotating handle allows the spring piece to clamp the wire firmly and reliably using its own elasticity. One rotating handle can open multiple wire inlets simultaneously, making multi-core wire connection simpler and faster. This invention can also adopt a direct-insertion type, realizing two different wire inlet methods, making it more convenient to use. The structure of this application also reduces the distance between the wire diameter and the PCB board height, reducing the instability of the wire clamping due to gravity. Attached Figure Description

[0016] Figure 1 This is a front view illustrating the principle of the first type of terminal block structure in the prior art;

[0017] Figure 2 Left view of the principle of the first type of terminal block structure in the prior art;

[0018] Figure 3 This is a front view illustrating the principle of the second type of terminal block structure in the prior art;

[0019] Figure 4 This is a perspective view of the present invention;

[0020] Figure 5 This is an exploded view of the present invention;

[0021] Figure 6 This is a cross-sectional view illustrating the structural principle of the present invention;

[0022] Figure 7 This is a perspective view of the rotating handle of the present invention;

[0023] Figure 8 This is a perspective view of the spring clip of the present invention;

[0024] Figure 9 A three-dimensional view of the assembled spring clip and clamping piece;

[0025] Figure 10 A 3D view of the assembled spring clips, clamps, and rotating handle;

[0026] Figure 11 Diagram of the insulating shell of the assembly of spring clip, clamp clip and rotating handle;

[0027] Figure 12 This is a state diagram for the use of the present invention. Detailed Implementation

[0028] Example: A tool-free, dual-input, knife-switch type terminal block includes an insulating housing, a rotary handle 4, a clamp 3, a spring 2, and a handle corner positioning device. The fixed ends of the clamp 3 and the spring 2 are fixedly installed inside the insulating housing. The movable end of the clamp 3 is an open, elastically retractable clamping channel. The movable end of the spring 2 can elastically abut against the fixed end of the clamp 3. Both the clamp 3 and the spring 2 are made of conductive material. The rotary handle 4 is rotatably mounted on the insulating housing, and the operating end of the rotary handle 4 extends out of the insulating housing. On the outside of the outer shell, a driving part is formed on one end of the rotating handle 4 located inside the insulating shell. The driving part can cause the movable end of the spring 2 to elastically deform and disengage from the fixed end surface of the clamp 3 by a set distance as the rotating handle 4 rotates. The handle angle positioning device is provided on the insulating shell or the spring 2. The handle angle positioning device can stop and position the rotating handle 4 when it is rotated to a set angle. The insulating shell is provided with a pin hole 6 that is directly connected to the clamping channel of the clamp 3. The insulating shell is also provided with a wire socket that is directly opposite to the movable end of the spring 2.

[0029] In use, the terminal connects the wire to the pin, and the pin 26 is soldered to the PCB board. The pin 26 is inserted through the pin hole 6, and is then clamped and positioned by the clamping channel on the clip 3. Simultaneously, the clip 3 forms a conductive structure with the circuit board. The clamping channel on the clip 3 can be surrounded by multiple cantilevered elastic arms 18. Each elastic arm forms an inverted V-shape bend at the opening of the clamping channel. At the bend inflection point 21, the diameter of the clamping channel opening narrows, creating a clamping effect. The V-shape bend towards the end of the elastic arm forms a chamfer-like structure, which guides the insertion of the pin. In normal operation, the movable end of the spring 2 and the fixed end of the clip 3 form an elastic clamping structure to clamp the wire 27. When it is necessary to open the movable end of the spring 2 for wiring or wire removal... Simply rotate the handle 4. When it reaches the set angle, the handle 4 engages with the handle angle positioning device. At this time, the movable end of the spring 2 is deformed and disengaged from the fixed end of the clamp 3 by a set distance. The wire can then be easily inserted into the gap between the movable end of the spring 2 and the fixed end of the clamp 3. After the wire is inserted or removed, simply rotate the handle 4 in the opposite direction. The movable end of the spring 2 automatically engages with the fixed end of the clamp 3 under its own elastic force to tighten the wire. The operating end of the handle 4 extending outside the insulating shell forms a pressing operating surface 16 on top and a lifting operating surface 9 below, facilitating rotation. This structure is easy to use, and wiring does not require tools or prolonged pressing of the handle, improving user comfort.

[0030] The driving part on the rotating handle 4 is an eccentric wheel structure. The outer circumferential surface of the eccentric wheel structure is in close contact with the side surface of the movable end of the spring piece 2 and the fixed end of the clamping piece 3. When the rotating handle 4 is rotated to a set angle so that the movable end of the spring piece 2 is disengaged from the fixed end of the clamping piece 3, the highest surface of the eccentric wheel structure on the rotating handle 4 can be in parallel contact with the side wall of the movable end of the spring piece 2.

[0031] When the handle 4 is rotated, it drives the eccentric wheel structure to rotate synchronously, causing different heights of the eccentric arc surface on the eccentric wheel to contact the movable end surface of the spring 2. This forces the movable end of the spring 2 to elastically deform and disengage from the fixed end of the clamp 3. When the highest surface of the eccentric cam structure is in parallel contact with the movable end of the spring 2, the diameter of the contact part between the eccentric cam and the movable end of the spring 2 is exactly perpendicular to the surface of the movable end of the spring 2. At this time, the eccentric cam forms a self-locking mechanism under the elastic force of the spring 2. When not subjected to external rotational torque, the eccentric cam will remain in this position, thus keeping the movable end of the spring 2 in the open position. In this way, rotating the handle 4 will... After the movable end of piece 2 is opened, there is no need to continuously apply force to the rotating handle 4, which can achieve one-handed wiring and is convenient to use. In addition to the eccentric wheel structure, the driving part can also adopt other linkage structures, such as linkage mechanism, cable mechanism, etc. These are equivalent replacement structures that can be easily conceived by those skilled in the art based on this patent and are within the scope of protection of this patent. The rotating handle 4 can be locked at a set angle by setting a buckle on the insulating shell. When the rotating handle 4 is rotated at a set angle, it can be locked and positioned by the buckle on the insulating shell. This is also an equivalent replacement structure that can be easily conceived by those skilled in the art based on this patent and is within the scope of protection of this patent.

[0032] A rotating shaft 14 is formed on the other end of the rotating handle 4. The eccentric wheel structure is integrally formed on the rotating shaft 14. A handle receiving groove 23 is formed inside the insulating shell. The rotating shaft 14 at the other end of the rotating handle 4 is rotatably supported in the handle receiving groove 23. This structure facilitates the installation and positioning of the rotating handle 4, ensures smooth rotation without deviation, and requires less effort to rotate the operating end of the rotating handle 4 by using the rotating shaft 14 at the other end of the rotating handle 4 as a fulcrum.

[0033] The spring piece 2 is a V-shaped structure formed integrally by bending the fixed end and the movable end. The corner of the V-shaped structure of the spring piece 2 is an arc-shaped structure, and a concave arc surface 15 is formed on the side wall of the movable end of the spring piece 2, which matches the shape of the protrusion of the eccentric wheel structure. The spring piece 2 adopts a V-shaped structure, and its bend just forms the fulcrum of the elastic end. It has a large elastic force, good overall toughness, and is not easy to undergo plastic deformation. The concave arc surface 15 formed on the side wall of the movable end of the spring piece 2 makes contact with the protrusion of the eccentric wheel structure, which can keep the rotating handle 4 in a stable state after it is turned to the set angle, and prevent the self-locking failure caused by accidental contact with the rotating handle 4 during the wiring process.

[0034] The spring piece 2 has a first movable end 10 and a second movable end 11 spaced parallel to each other. The clamping end 3 has a first contact end 19 and a second contact end spaced parallel to each other. The first movable end 10 and the second movable end 11 of the spring piece 2 elastically abut against the first contact end 19 and the second contact end surface 20 of the clamping end 3, respectively. The rotating handle 4 has two driving parts, namely a first driving part 12 and a second driving part 13 spaced apart. The first driving part 12 and the second driving part 13 can simultaneously drive the first movable end 10 and the second movable end 11 of the spring piece 2 to elastically deform and disengage from the first contact end 19 and the second contact end surface 20 of the clamping end 3. The insulating shell has a first wire socket 7 and a second wire socket 8 spaced parallel to each other. The first wire socket 7 and the second wire socket 8 correspond to the first movable end 10 and the second movable end 11 of the spring piece 2, respectively. By setting a first movable end 10 and a second movable end 11 on the spring piece 2, and cooperating with the first contact end 19 and the second contact end on the fixed end of the clamp piece 3, two wire channels can be formed to realize the insertion and positioning of wires of different diameters. In addition, more movable ends can be set to cooperate with more contact ends to realize the insertion of wires of more diameters.

[0035] The fixed end of the clamp 3 is also provided with an inverted protruding structure 17. The inclined surface of the inverted protruding structure 17 faces the wire insertion port of the insulating shell, and the movable end of the spring piece 2 is stopped on the vertical surface of the inverted protruding structure 17 on the side wall facing the wire insertion port. The inverted protruding structure 17 can block the movable end of the spring piece 2 by the fixed end of the clamp 3, preventing the movable end of the spring piece 2 from deforming in the opposite direction when the wire is pulled outward, which would lead to failure to tighten the wire and ensure stable tightening of the wire. At the same time, when the wire is inserted for wiring, the inclined surface contacts the wire and guides the wire, making it easier for the wire to be inserted smoothly and clamped and positioned.

[0036] The fixed end surface of the clip 3 is also provided with a wire insertion depth limiting stop 25. The wire insertion depth limiting stop 25 can stop the end of the wire inserted between the movable end of the spring 2 and the fixed end surface of the clip 3. The wire insertion depth limiting stop 25 on the fixed end of the clip 3 is used to block the end of the wire, so that the wire is blocked after being inserted to a certain depth and cannot be inserted further, thereby limiting the wire insertion depth. This facilitates effective insertion guidance for workers and avoids the wire being inserted too deeply, which may affect the clip 3 and the pin.

[0037] A fixing connecting plate 24 is integrally formed on the fixing end of the clamping piece 3, and the fixing end of the spring piece 2 is fixedly connected to the fixing connecting plate 24. By setting the fixing connecting plate 24 on the fixing end of the clamping piece 3 for fixing and positioning with the fixing end of the spring piece 2, the spring piece 2 and the clamping piece 3 are integrated into one structure, which facilitates its assembly and positioning with the insulating shell, eliminating the need to assemble the two separately.

[0038] The fixed end of the spring piece 2 is provided with at least one connecting hole, and the fixed connecting plate 24 on the fixed end of the clamp piece 3 has a protruding post structure. The side wall of the fixed end of the spring piece 2 facing away from the movable end is tightly abutted against the surface of the fixed connecting plate 24 on the fixed end of the clamp piece 3. The protruding post structures on the fixed connecting plate 24 on the fixed end of the clamp piece 3 are inserted into the connecting holes of the fixed end of the spring piece 2. When the fixed end of the clamp piece 3 is fixed, the connecting hole of the fixed end of the spring piece 2 and the protruding post structure on the fixed connecting plate 24 of the clamp piece 3 are inserted and fixed to form an integral structure. The protruding post structure on the fixed connecting plate 24 of the clamp piece 3 can also be a rivet, riveted together with the fixed end of the spring piece 2, or connected by a connecting screw. These are equivalent replacement structures that are easily conceived by those skilled in the art based on this patent and are within the scope of protection of this patent.

[0039] The fixing connecting plate 24 of the clamping piece 3 is arranged parallel to and spaced apart from the fixing end along the depth direction of the clamping channel. The two sides of the fixing connecting plate 24 are fixedly connected to the fixing end of the clamping piece 3 through bending arms perpendicular to it to form an integral structure. The fixing end of the spring piece 2 extends into the fixing connecting plate 24 facing the fixing end of the clamping piece 3 through the channel between the two bending arms. The insulating shell includes an insulating body 5 and an insulating cover 1. An open inner cavity is formed inside the insulating body 5. The other ends of the clamping piece 3, the spring piece 2, and the rotating handle 4 are respectively accommodated in the open inner cavity of the insulating body 5. The insulating cover 1 is also included. The spring 1 can be fixedly sleeved on the outside of the opening end of the insulating body 5. The inner wall of the opening cavity of the insulating body 5 and the inner wall of the insulating cover 1 are jointly formed with a stop surface that matches the outline of the fixed end of the clip 3, the fixed connecting plate 24 on the clip 3, and the bending arm on the clip 3. The fixed end of the clip 3, the fixed connecting plate 24, and the bending arm are stopped and accommodated between the stop surfaces. The inner wall of the opening cavity of the insulating body 5 is also formed with a limiting contact surface that matches the shape of the root of the movable end of the spring 2. The root of the movable end of the spring 2 is fitted and supported on the limiting contact surface. The insulating shell is designed as a combination structure of the insulating body 5 and the insulating cover 1, which facilitates the assembly and positioning of the spring 2, the clip 3, and the rotating handle 4. The limiting contact surface is formed on the inner wall of the opening cavity of the insulating body 5 to support and contact the inflection point formed by the movable end and the fixed end of the spring 2, so as to achieve stable support for the spring 2 and prevent the spring 2 from deforming in the opposite direction.

Claims

1. A blade dual in-line tool-less wiring terminal, characterized by: The utility model relates to a kind of rotating handle and the rotating handle's rotating angle positioning device, including insulating shell, rotating handle (4), clamping piece (3), elastic sheet (2) and handle corner positioning device, the fixed end of the clamping piece and the fixed end of elastic sheet are fixedly installed in insulating shell, the movable end of clamping piece is open and can be elastically retracted clamping channel, the movable end of elastic sheet can elastically tightly resist the fixed end of clamping piece, the clamping piece and elastic sheet are made of conductive material, rotating handle can be rotatably installed on insulating shell, the operating end of rotating handle is stretched outside insulating shell, rotating handle is formed with driving part on one end in insulating shell, the driving part can drive the movable end of elastic sheet elastically deformed and separate from the fixed end surface of clamping piece with a specified distance with rotating handle rotating, handle corner positioning device is located on insulating shell or elastic sheet, the handle corner positioning device can be positioned to the rotating handle of rotating to specified angle, the insulating shell is provided with needle hole (6) with the clamping channel of clamping piece opposite communication, insulating shell is also provided with wire insertion port opposite the movable end of elastic sheet, the movable end of elastic sheet is formed with first movable end and second movable end in parallel interval on the clamping piece, the first contact end and the second contact end are provided on the fixed end of clamping piece in parallel interval, the first movable end and the second movable end of elastic sheet are elastically tightly resisted on the first contact end and the second contact end surface of clamping piece respectively, the driving part on rotating handle is two, and it is first driving part and second driving part respectively, the first driving part (12) and the second driving part (13) can simultaneously drive the first movable end (10) and the second movable end (11) on elastic sheet synchronous elastically deformed and separate from the first contact end (19) and the second contact end surface (20) of clamping piece, the first wire insertion port (7) and the second wire insertion port (8) are provided on insulating shell in parallel interval, and the first wire insertion port and the second wire insertion port correspond to the first movable end and the second movable end of elastic sheet respectively, the fixed end of elastic sheet is fixedly connected with the fixed connecting plate (24) integrally formed on the fixed end of clamping piece.

2. The blade type dual wire tool-less terminal according to claim 1, characterized in that: The driving part on rotating handle is eccentric wheel structure, the circumferential outside surface of the eccentric wheel structure is tightly resisted movable end of elastic sheet contact clamping piece fixed end one side surface, when rotating handle rotates to specified angle and makes movable end of elastic sheet separate from clamping piece fixed end, the highest surface of the eccentric wheel structure on rotating handle can be contacted with movable end of elastic sheet side wall in parallel.

3. The blade type dual wire tool-less terminal according to claim 2, characterized in that: Rotating shaft (14) is formed on the other end of rotating handle, the eccentric wheel structure is integrally formed on the rotating shaft, handle receiving groove (23) is formed in the inside of insulating shell, and the rotating shaft of the other end of rotating handle can be rotatably held in the handle receiving groove.

4. The blade type dual wire tool-less terminal according to claim 2, characterized in that: The movable end of elastic sheet is formed with concave arc surface (15) matched with the convex part shape of eccentric wheel structure on the side wall, and the movable end of elastic sheet is formed with concave arc surface (15) matched with the convex part shape of eccentric wheel structure on the side wall.

5. The clamp-on dual wire tool-less terminal of claim 1, wherein: The fixed end surface of clamping piece is also provided with inverted-dog-shaped convex stop structure (17), and the inclined surface of the inverted-dog-shaped convex stop structure faces the wire insertion port direction of insulating shell, and the side wall of the movable end of elastic sheet towards wire insertion port is stopped on the vertical surface of the inverted-dog-shaped convex stop structure.

6. The clamp-on dual wire tool-less terminal of claim 1, wherein: The clamping piece fixed end surface is further provided with a wire insertion depth limiting stop wall (25) capable of stopping the wire end inserted between the elastic piece movable end and the clamping piece fixed end surface.

7. The blade type dual wire tool-less terminal according to claim 6, characterized in that: The fixed end of the elastic piece is provided with at least one connecting hole, the fixed connecting plate on the clamping piece fixed end is formed with a protruding column structure, the fixed end of the elastic piece abuts against the surface of the fixed connecting plate of the clamping piece fixed end on the side away from the movable end, and the protruding column structure on the fixed connecting plate of the clamping piece fixed end is inserted into the connecting hole of the fixed end of the elastic piece one by one.

8. The clamp-on dual wire tool-less terminal of claim 5, wherein: The fixed connecting plate and the fixed end of the clamping piece are arranged in parallel and spaced apart along the depth direction of the clamping channel, the fixed connecting plate is fixedly connected to the fixed end of the clamping piece through two bending arms perpendicular to the fixed connecting plate to form an integrated structure, the fixed end of the elastic piece extends into the side of the fixed connecting plate facing the fixed end of the clamping piece through the channel between the two bending arms, the insulating shell comprises an insulating body (5) and an insulating cover (1), an open inner cavity is formed in the insulating body, the clamping piece, the elastic piece and the other end of the rotating handle are respectively accommodated in the open inner cavity of the insulating body, the insulating cover can be fixedly sleeved on the outside of the open end of the insulating body, the side wall of the open inner cavity of the insulating body and the inner side wall of the insulating cover are jointly formed with a stop surface matching the outer shape contour of the fixed end of the clamping piece, the fixed connecting plate on the clamping piece and the bending arm on the clamping piece, the fixed end, the fixed connecting plate and the bending arm of the clamping piece are stopped and accommodated between the stop surfaces, and the side wall of the open inner cavity of the insulating body is further formed with a limiting contact surface matching the outer shape of the root of the movable end of the elastic piece, and the root of the movable end of the elastic piece is supported on the limiting contact surface.

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