Wiring terminal with overload protection function

Abstract

The invention discloses a wiring terminal with an overload protection function, which comprises a shell, a wiring assembly is arranged on the shell, a static terminal and a movable terminal are arranged in the shell, one end of the static terminal is positioned in the shell, the other end of the static terminal is connected with the wiring assembly, one end of the movable terminal is positioned in the shell, and the other end of the movable terminal is connected with the wiring assembly. One end of the movable terminal is connected with the static terminal, the other end of the movable terminal penetrates through the shell and extends to the outside of the shell, the movable terminal is fixedly connected with a bimetallic strip, one end, far away from the movable terminal, of the bimetallic strip abuts against the static terminal, and the bimetallic strip can deform after being heated to be separated from the static terminal; according to the invention, the wiring terminal is connected into a circuit, when overload occurs in the circuit, the current passing through the bimetallic strip is increased, the bimetallic strip is heated to generate deformation, one end of the bimetallic strip is tilted to be separated from the static terminal, so that the circuit is disconnected to play a role in protecting the circuit, and when a fault is eliminated, the bimetallic strip is in contact with the static terminal, and the circuit is conducted again. And the circuit returns to normal.

Description

Technical Field

[0001] The invention relates to the technical field of wiring terminals, and in particular to a wiring terminal with an overload protection function. Background Art

[0002] Terminal blocks are an accessory product used to achieve electrical connections, and are classified as connectors in the industry. Terminal blocks are used to facilitate the connection of wires. They are actually a piece of metal sealed in insulating plastic, with holes at both ends for inserting wires, and screws for tightening or loosening. For example, two wires sometimes need to be connected and sometimes need to be disconnected. At this time, they can be connected with terminals, and can be disconnected at any time without welding or wrapping them together. Traditional terminal blocks only have the function of connecting the circuit, so that the current in the circuit can pass normally, so that the load in the circuit can work normally, but the terminal blocks do not have the function of overload protection. When the load in the circuit is overloaded, the excessive current in the circuit will cause the terminal blocks to heat up, and in severe cases, it can also cause fire. In order to avoid the above situation, it is necessary to connect an overload protector in the circuit, and the overload protector is independent of the terminal block, so it is necessary to increase the installation space and wiring, which increases the installation cost and labor intensity. Summary of the invention

[0003] The object of the present invention is to provide a wiring terminal with an overload protection function in view of the above-mentioned deficiencies in the prior art.

[0004] To solve the above problems, the technical solution adopted by the present invention is:

[0005] A terminal block with an overload protection function comprises a shell, a terminal block assembly is arranged on the shell, a static terminal and a dynamic terminal are arranged in the shell, one end of the static terminal is located in the shell, and the other end is connected to the terminal block, one end of the dynamic terminal is located in the shell, and the other end extends through the shell to the outside of the shell, a bimetallic strip is fixedly connected to the dynamic terminal, one end of the bimetallic strip away from the dynamic terminal abuts against the static terminal, and the bimetallic strip can be deformed and separated from the static terminal after being heated.

[0006] Preferably, a reset rod is slidably provided on the shell, one end of the reset rod is located inside the shell, and the other end extends through the shell to the outside of the shell, and a reset spring is sleeved on the reset rod. The reset spring is located in the shell and is used for resetting the reset rod.

[0007] Preferably, a rotating shaft is rotatably arranged in the shell, a clamping rod and a limiting rod are fixedly arranged on the rotating shaft, a limiting boss is also arranged in the shell, the limiting boss is located on one side of the bimetallic strip, the clamping rod is rotatably arranged between the limiting boss and the bimetallic strip, and the limiting rod is rotatably arranged between the limiting boss and the reset rod.

[0008] Preferably, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, and the wiring assembly and the limiting boss are both arranged on the upper shell.

[0009] Preferably, the wiring assembly includes a plurality of terminal wells on the upper shell, a wiring frame is slidably arranged in the terminal well, a clamping bolt is rotatably arranged on the upper shell, one end of the clamping bolt extends into the terminal well and is threadedly connected to the wiring frame, and one end of the static terminal is inserted in the wiring frame.

[0010] Preferably, the side wall of the upper shell is provided with a locking block, the side wall of the lower shell is provided with a locking plate, the locking plate is provided with a locking groove, and when the upper shell and the lower shell are closed and fixedly connected, the locking block is clamped in the locking groove.

[0011] Preferably, a positioning hole is provided on the upper shell, and a positioning column is provided on the lower shell. The position of the positioning column is relative to the positioning hole. When the upper shell and the lower shell are closed and fixedly connected, the positioning column is inserted into the positioning hole.

[0012] Preferably, a plug-in column is fixedly provided on the upper shell.

[0013] Preferably, a fixing column is fixedly provided at the bottom of the lower shell, a fixing hole is opened on the static terminal, and the fixing column is inserted into the fixing hole for fixed connection of the static terminal.

[0014] Preferably, a fixed contact is provided on the static terminal, and a moving contact is provided on the bimetal strip, and when the circuit is on, the fixed contact abuts against the moving contact.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] 1. In the present invention, the wiring terminal is provided with a static terminal and a dynamic terminal, and the dynamic terminal is provided with a bimetallic strip, which can be deformed after being heated. When the wiring terminal is connected, one end of the dynamic terminal is connected to the load in the circuit, and the static terminal is connected to the wiring assembly. When the circuit is turned on, the bimetallic strip abuts against the static terminal to allow current to pass. When the load is overloaded, the current in the circuit increases, causing the bimetallic strip to heat up and deform. The deformed bimetallic strip is separated from the static terminal, thereby cutting off the circuit and protecting the circuit. Therefore, the wiring terminal can have the function of overload protection, simplify the circuit, reduce the components in the circuit, and save installation controls and wiring.

[0017] 2. In the present invention, when an overload occurs and the bimetallic strip is heated and deformed to disconnect the circuit, after the fault is eliminated, in order to quickly restore the circuit, the bimetallic strip can be squeezed by pressing the reset rod, so that the bimetallic strip moves to one side of the static terminal until it abuts against the static terminal, thereby connecting the circuit and quickly resetting it without replacing the components in the circuit;

[0018] 3. In the present invention, by pressing the reset rod, the limit rod and the clamping rod are driven to rotate with the rotating axis as the center. The clamping rod can squeeze the bimetallic strip to reset the bimetallic strip and turn on the circuit. In order to avoid the bimetallic strip from breaking due to excessive force, a limit boss is provided in the shell. When the limit rod abuts against the limit boss, it plays a limiting role and the clamping rod cannot continue to rotate. Therefore, the bimetallic strip cannot be squeezed, thereby effectively protecting the bimetallic strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the wiring terminal of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of the wiring terminal of the present invention from another angle;

[0021] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the upper shell of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the lower shell of the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the interior of the lower shell of the present invention from another angle;

[0024] Figure 6 It is a three-dimensional schematic diagram of the static terminal of the present invention;

[0025] Figure 7 It is a three-dimensional schematic diagram of the movable terminal of the present invention.

[0026] In the figure: 1 is a shell, 2 is a static terminal, 3 is a moving terminal, 4 is a bimetallic strip, 5 is a reset rod, 6 is a reset spring, 7 is a rotating shaft, 8 is a clamping rod, 9 is a limiting rod, 10 is a limiting boss, 11 is an upper shell, 12 is a lower shell, 13 is a terminal well, 14 is a wiring frame, 15 is a clamping bolt, 16 is a locking block, 17 is a locking plate, 18 is a locking groove, 19 is a positioning hole, 20 is a positioning column, 21 is a plug-in column, 22 is a fixing column, 23 is a fixing hole, 24 is a fixed contact, 25 is a moving contact, 26 is a contact portion, 27 is a fixing portion, and 28 is a wiring portion. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 5As shown, a terminal block with an overload protection function comprises a shell 1, a cavity is provided inside the shell 1, a wiring assembly is arranged on the shell 1, a static terminal 2 and a dynamic terminal 3 are provided in the internal cavity of the shell 1, one end of the static terminal 2 is located in the shell 1, and the other end is connected to the wiring assembly, the static terminal 2 is connected to the live wire in the wiring assembly, one end of the dynamic terminal 3 is located in the shell 1, and the other end passes through the shell 1 to extend to the outside of the shell 1, one end of the dynamic terminal 3 passing through the outside of the shell 1 is connected to the live wire of the load, and the neutral wire and the ground wire of the load are connected to the wiring assembly, a bimetallic strip 4 is fixedly connected to the dynamic terminal 3, one end of the bimetallic strip 4 is fixedly connected to the dynamic terminal 3, and the other end is a movable end, when the circuit is turned on, one end of the bimetallic strip 4 away from the dynamic terminal 3 abuts against the static terminal 2, when an overload occurs in the circuit, the bimetallic strip 4 can be deformed after being heated, and the end of the bimetallic strip 4 abutting against the static terminal 2 is tilted, thereby disconnecting the bimetallic strip 4 and the static terminal 2, and the circuit can be cut off, thereby protecting the circuit. In the present invention, the neutral line and ground line of the power supply are connected to the neutral line and ground line of the load through a wiring assembly, and the live line current of the power supply flows through the wiring assembly, the static terminal 2, the bimetal strip 4 and the moving terminal 3 in sequence, and finally the moving terminal 3 is connected to the live line of the load to provide power to the load. When an overload occurs in the load, the current in the circuit increases, and the current passing through the bimetal strip 4 increases accordingly, causing the temperature of the bimetal strip 4 to rise. When the temperature of the bimetal strip 4 rises, it will deform and bend, and the movable end of the bimetal strip 4 will rise and separate from the static terminal 2. The current cannot be output from the bimetal strip 4 to the static terminal 2, thereby cutting off the circuit and protecting the circuit.

[0031] In another embodiment, when the circuit is disconnected, the load fault can be repaired. After the fault repair is completed, the circuit needs to be turned on, so it is necessary to press the bimetallic strip 4 to make the bimetallic strip 4 abut against the static terminal 2. Therefore, a reset rod 5 is slidably provided on the housing 1. The reset rod 5 is made of an insulating material. The reset rod 5 can be vertically arranged with the bimetallic strip 4. One end of the reset rod 5 is located inside the housing 1, and the other end passes through the housing 1 and extends to the outside of the housing 1. A reset spring 6 is sleeved on the reset rod 5. The reset spring 6 is located in the housing 1. One end of the reset spring 6 is fixedly connected to the side wall of the housing 1, and the other end is fixed to one end of the reset rod 5 located in the housing 1. When the bimetallic strip 4 is deformed by heat, the movable end of the bimetallic strip 4 rises and abuts against the end of the reset rod 5 located inside the housing 1. When it is necessary to reset the circuit to conduct, the reset rod 5 can slide toward the inside of the housing 1 by pressing the end of the reset rod 5 located outside the housing 1. The reset rod 5 squeezes the movable end of the bimetallic strip 4 to move the bimetallic strip 4 toward one side of the static terminal 2 until the bimetallic strip 4 abuts against the static terminal 2 to conduct the circuit. The reset spring 6 of the reset rod 5 is stretched during the sliding process. After the circuit is conducted, the reset rod 5 is released, and the reset rod 5 slides toward the outside of the housing 1 under the action of the resilience of the reset spring 6 until it returns to its initial position.

[0032] In another embodiment, if Figure 3 , Figure 4 and Figure 5As shown, in order to prevent the bimetallic strip 4 from being squeezed and broken due to excessive pressure on the reset rod 5, a reset rod 5 is slidably arranged on the housing 1, one end of the reset rod 5 is located inside the housing 1, and the other end extends to the outside of the housing 1. The reset rod 5 is arranged parallel to the bimetallic strip 4, and a reset spring 6 is sleeved on the reset rod 5. The reset spring 6 is located in the housing 1, one end of the reset spring 6 is fixedly connected to the side wall of the housing 1, and the other end is fixedly connected to one end of the reset rod 5 located inside the housing 1. A rotating shaft 7 is rotatably arranged in the internal cavity of the housing 1, and the rotating shaft 7 A clamping rod 8 and a limiting rod 9 are fixedly arranged on the upper part, and the clamping rod 8 and the limiting rod 9 are arranged in an L-shaped structure. A limiting boss 10 is also arranged in the shell 1, and the limiting boss 10 is located on one side of the bimetallic strip 4 and below the reset rod 5. The clamping rod 8 is rotatably arranged between the limiting boss 10 and the bimetallic strip 4, and the limiting rod 9 is rotatably arranged between the limiting boss 10 and the reset rod 5. The clamping rod 8 and the limiting rod 9 both rotate with the rotating shaft 7 as the center of the circle. The clamping rod 8, the limiting rod 9 and the rotating shaft 7 can rotate freely in the cavity inside the shell 1. When a circuit appears When overloaded, the active end of the bimetallic strip 4 is deformed by heat and tilted up, and the active end of the bimetallic strip 4 abuts against the clamping rod 8. When the fault in the circuit is eliminated, in order to connect the circuit, the reset rod 5 can be pressed to squeeze the limit rod 9, and the limit rod 9 rotates with the rotating shaft 7 as the center of the circle, driving the clamping rod 8 to rotate, and the clamping rod 8 squeezes the active end of the bimetallic strip 4, so that the active end of the bimetallic strip 4 moves toward one side of the static terminal 2 until the bimetallic strip 4 contacts the static terminal 2, so that the circuit is restored. In order to avoid excessive pressure causing the bimetallic strip to 4 is squeezed and broken, and a limiting boss 10 is provided in the housing 1. When the pressing rod 8 squeezes the bimetallic strip 4 and contacts the static terminal 2, the limiting rod 9 abuts against the limiting boss 10. The limiting boss 10 can limit the limiting rod 9, so that the limiting rod 9 cannot continue to rotate, thereby also enabling the pressing rod 8 to stop rotating to squeeze the bimetallic strip 4, thereby protecting the bimetallic strip 4. When the reset rod 5 is pressed, the reset spring 6 is stretched. After the circuit is restored, the reset rod 5 is released, and the reset rod 5 is reset under the action of the resilience of the reset spring 6 to restore to the initial state.

[0033] Furthermore, a clamping block is fixedly provided at one end of the reset rod 5, and the clamping block is located inside the shell 1. One end of the reset spring 6 is fixedly connected to the side wall of the shell 1, and the other end is fixedly connected to the clamping block. The size of the clamping block is larger than the cross-sectional size of the reset rod 5, so that the contact area with the limit rod 9 can be increased, thereby better achieving reset.

[0034] Furthermore, if Figure 3 As shown, the shell 1 includes an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 are detachably fixedly connected. When the wiring terminal is in use, the upper shell 11 and the lower shell 12 need to be closed and fixedly connected to form a complete shell 1, and the wiring assembly and the limiting boss 10 are both arranged on the upper shell 11.

[0035] Furthermore, an upper socket is provided in the upper shell 11, and a lower socket is provided in the lower shell 12. When the upper shell 11 and the lower shell 12 are closed and fixedly connected, the positions of the upper socket and the lower socket correspond to each other, one end of the rotating shaft 7 is inserted in the upper socket, and the other end is inserted in the lower socket. The rotating shaft 7 can rotate in the upper socket and the lower socket, thereby avoiding changes in the position of the rotating shaft 7.

[0036] Furthermore, the wiring assembly includes a plurality of terminal wells 13 provided on the upper shell 11, a wiring frame 14 is slidably provided in the terminal well 13, a clamping bolt 15 is rotatably provided on the upper shell 11, one end of the clamping bolt 15 extends into the terminal well 13 and is threadedly connected to the wiring frame 14, one end of the static terminal 2 is inserted into one of the wiring frames 14, in this embodiment, three terminal wells 13 are provided on the upper shell 11, a wiring frame 14 is slidably provided inside each of the three terminal wells 13, and the wiring frame 14 can be driven to slide in the terminal well 13 by rotating the clamping bolt 15 on the upper shell 11, and the wiring frames 14 in the three terminal wells 13 are respectively connected to the neutral wire, the live wire and the ground wire, and the neutral wire and the ground wire in the circuit are connected The neutral wire and the ground wire on the load are connected in the corresponding wiring frame 14. The wiring harness can be fixed in the wiring frame 14 by rotating the clamping bolt 15, and the live wire in the circuit is connected to the corresponding wiring frame 14 connected to the live wire. At the same time, the end of the static terminal 2 inserted into the wiring frame 14 can also be connected to the live wire in the circuit, and the live wire on the load is connected to the end of the moving terminal 3 extending to the outside of the housing 1, thereby forming a complete circuit. The current in the live wire can enter the load through the wiring frame 14, the static terminal 2, the bimetallic strip 4 and the moving terminal 3 in sequence to power it. When the load is overloaded, the current passing through increases, which can cause the bimetallic strip 4 to heat and deform, thereby cutting off the circuit and protecting the circuit.

[0037] Furthermore, a locking block 16 is provided on the side wall of the upper shell 11, and the locking block 16 is a wedge-shaped structure. A locking plate 17 is provided on the side wall of the lower shell 12, and a locking groove 18 is provided on the locking plate 17. When the upper shell 11 and the lower shell 12 are closed and fixedly connected, the locking block 16 is clamped in the locking groove 18. Since the locking block 16 is a wedge-shaped structure, it can prevent the locking block 16 from escaping from the locking groove 18, thereby making the connection between the upper shell 11 and the lower shell 12 more firmly.

[0038] Furthermore, a positioning hole 19 is provided on the upper shell 11, and a positioning column 20 is provided on the lower shell 12. The position of the positioning column 20 is relative to the positioning hole 19. When the upper shell 11 and the lower shell 12 are closed and fixedly connected, the positioning column 20 is inserted into the positioning hole 19, which can play a positioning role, thereby making the installation accuracy of the upper shell 11 and the lower shell 12 higher.

[0039] Furthermore, a plug-in column 21 is fixedly provided on the upper shell 11. The cross section of the plug-in column 21 is a cross-shaped structure. The plug-in column 21 is used to plug in the wiring terminal to fix the wiring terminal and prevent the wiring terminal from shaking.

[0040] Furthermore, a fixing column 22 is fixedly provided at the bottom of the lower shell 12 , a fixing hole 23 is opened on the static terminal 2 , and the fixing column 22 is inserted into the fixing hole 23 for fixed connection of the static terminal 2 .

[0041] Furthermore, if Figure 6 As shown, the static terminal 2 includes a contact portion 26, a fixing portion 27 and a wiring portion 28. The contact portion 26, the fixing portion 27 and the wiring portion 28 are of a gate-shaped structure. The two ends of the fixing portion 27 are fixedly connected to the contact portion 26 and the wiring portion 28 respectively. The contact portion 26 and the wiring portion 28 are located inside the shell 1, and the fixing portion 27 is located outside the shell 1. The contact portion 26 abuts against the bimetallic strip 4, and the wiring portion 28 is inserted into the wiring frame 14. The fixing hole 23 is provided on the fixing portion 27, and the fixing column 22 is inserted into the fixing hole 23 of the fixing portion 27. The ends of the fixing column 22 are two symmetrically arranged wedge blocks. Therefore, after the fixing column 22 is inserted into the fixing hole 23, it can effectively prevent the fixing column 22 from coming out of the fixing hole 23, so that the static terminal 2 is fixedly connected to the shell 1.

[0042] Furthermore, if Figure 6 and Figure 7 As shown, a fixed contact 24 is provided on the static terminal 2, and a moving contact 25 is provided on the bimetallic strip 4. When the circuit is on, the fixed contact 24 abuts against the moving contact 25. The fixed contact 24 and the moving contact 25 can be made of silver material, which has better conductivity, thereby avoiding false connection.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A terminal block with overload protection function, characterized in that: The invention comprises a shell (1), wherein a wiring assembly is arranged on the shell (1), wherein a static terminal (2) and a movable terminal (3) are arranged in the shell (1), wherein one end of the static terminal (2) is located in the shell (1), and the other end is connected to the wiring assembly, wherein one end of the movable terminal (3) is located in the shell (1), and the other end passes through the shell (1) and extends to the outside of the shell (1), wherein a bimetallic strip (4) is fixedly connected to the movable terminal (3), wherein one end of the bimetallic strip (4) away from the movable terminal (3) is in contact with the static terminal (2), and wherein the bimetallic strip (4) can be deformed and separated from the static terminal (2) after being heated.

2. A terminal block with overload protection function according to claim 1, characterized in that: A reset rod (5) is slidably arranged on the shell (1), one end of the reset rod (5) is located inside the shell (1), and the other end passes through the shell (1) and extends to the outside of the shell (1), and a reset spring (6) is sleeved on the reset rod (5), and the reset spring (6) is located inside the shell (1) and is used for resetting the reset rod (5).

3. A terminal block with overload protection function according to claim 2, characterized in that: A rotating shaft (7) is rotatably arranged in the shell (1), a pressing rod (8) and a limiting rod (9) are fixedly arranged on the rotating shaft (7), a limiting boss (10) is also arranged in the shell (1), the limiting boss (10) is located on one side of the bimetallic strip (4), the pressing rod (8) is rotatably arranged between the limiting boss (10) and the bimetallic strip (4), and the limiting rod (9) is rotatably arranged between the limiting boss (10) and the reset rod (5).

4. A terminal block with overload protection function according to claim 3, characterized in that: The housing (1) comprises an upper housing (11) and a lower housing (12); the upper housing (11) and the lower housing (12) are fixedly connected; and the wiring assembly and the limiting boss (10) are both arranged on the upper housing (11).

5. A terminal block with overload protection function according to claim 4, characterized in that: The wiring assembly comprises a plurality of terminal wells (13) provided on the upper shell (11), a wiring frame (14) being slidably arranged in the terminal well (13), a clamping bolt (15) being rotatably arranged on the upper shell (11), one end of the clamping bolt (15) extending into the terminal well (13) and being threadedly connected to the wiring frame (14), and one end of the static terminal (2) being inserted into one of the wiring frames (14).

6. The wiring terminal with overload protection function according to claim 4, characterized in that: The side wall of the upper shell (11) is provided with a locking block (16), the side wall of the lower shell (12) is provided with a locking plate (17), and the locking plate (17) is provided with a locking groove (18). When the upper shell (11) and the lower shell (12) are closed and fixedly connected, the locking block (16) is clamped in the locking groove (18).

7. The wiring terminal with overload protection function according to claim 4, characterized in that: The upper shell (11) is provided with a positioning hole (19), and the lower shell (12) is provided with a positioning column (20). The position of the positioning column (20) is relative to the positioning hole (19). When the upper shell (11) and the lower shell (12) are closed and fixedly connected, the positioning column (20) is inserted into the positioning hole (19).

8. The wiring terminal with overload protection function according to claim 4, characterized in that: A plug-in column (21) is fixedly arranged on the upper shell (11).

9. The wiring terminal with overload protection function according to claim 4, characterized in that: A fixing column (22) is fixedly arranged at the bottom of the lower shell (12), a fixing hole (23) is opened on the static terminal (2), and the fixing column (22) is inserted into the fixing hole (23) for fixed connection of the static terminal (2).

10. The wiring terminal with overload protection function according to claim 1, characterized in that: The static terminal (2) is provided with a fixed contact (24), and the bimetallic strip (4) is provided with a moving contact (25). When the circuit is in a conducting state, the fixed contact (24) abuts against the moving contact (25).

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