A wiring terminal

Abstract

The utility model relates to a wiring terminal, including shell and press line subassembly, press line subassembly locates the shell wiring hole both ends, and the wiring hole both ends are equipped with screw hole, and press line subassembly contain wiring bolt, connector, upper spring leaf and lower spring leaf. Wiring bolt is connected with screw hole thread, and connector and wiring bolt rotate cooperation, and the connecting groove of connecting lead wire is formed between upper and lower spring leaf, and all adopt memory metal to make, and after being heated, opposite contraction bending to disconnect lead wire and upper spring leaf electric connection. The wiring terminal passes through the unique structure design, realizes the steady connection of lead wire and convenient dismounting, and the application of memory metal spring leaf gives its overheat automatic protection function, effectively avoids electrical fault and potential safety hazard, and the safety, reliability and service life of wiring terminal are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and specifically to a terminal block. Background Technology

[0002] In the field of electrical connections, terminal blocks, as key components for achieving electrical conductivity between wires, are widely used in various electrical equipment and circuit systems. Among them, screw-type terminal blocks, due to their simple structure and convenient operation, have become the most commonly used type of terminal block. This type of terminal block has a wiring hole and a threaded hole communicating with the wiring hole, with a wiring bolt passing through the threaded hole. In actual use, one wire is inserted into the wiring hole, and another wire is wound around the wiring bolt. By tightening the wiring bolt, its threaded end inserts into the wiring hole and presses the wire inside, while the head presses and fixes the wound wire, thus achieving an electrical connection.

[0003] However, during long-term use, a significant defect was found at the wire clamping point of screw-type terminal blocks. Because resistance is generated when current flows, the clamping point tends to overheat with increasing usage time. When this heat accumulates to a certain level, it not only accelerates the aging of the terminal blocks and reduces their lifespan, but may also cause serious safety accidents such as fires, posing a significant threat to the stable operation of electrical systems and personnel safety. Existing screw-type terminal blocks lack an effective overheat protection mechanism and cannot promptly address overheating issues at the wire clamping point, necessitating urgent improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a wiring terminal.

[0005] The technical solution adopted by this utility model is: a terminal block, including a housing and a wire pressing assembly, wherein the wire pressing assembly is disposed at both ends of the wiring hole in the housing, and the two ends of the wiring hole are provided with screw holes; the wire pressing assembly includes a wiring bolt, a connector, an upper spring and a lower spring.

[0006] The wiring bolt is threaded into the screw hole;

[0007] The connector is rotatably fitted with the wiring bolt;

[0008] The upper spring is connected to the connector head, and the lower spring is connected to the bottom wall of the wiring hole. A connecting groove for connecting wires is formed between the upper spring and the lower spring.

[0009] Both the upper and lower springs are made of shape memory metal. When heated, the upper and lower springs bend and deform in opposite directions to break the electrical connection between the wire and the upper spring.

[0010] Furthermore, the connector includes a chassis, a connecting plate, a connecting post, and a "T"-shaped rotating post. The "T"-shaped rotating post is rotatably connected to the "T"-shaped hole at the bottom of the wiring bolt, and the upper spring plate is connected to the connecting plate by a first bolt.

[0011] Furthermore, the wiring hole has an arched structure, and the lower spring is connected to the bottom wall of the wiring hole by a second bolt.

[0012] Furthermore, a mounting groove is provided at the bottom of the outer casing, and fitting grooves are provided on both sides of the mounting groove.

[0013] Furthermore, both the upper and lower springs include a fixing part, an elastic arc-shaped part, and a pressure line part, which are integrally formed.

[0014] Furthermore, the top of the wiring bolt has a hexagonal screw head, and the top of the hexagonal screw head is provided with a cross groove and a slotted groove.

[0015] The beneficial effects of this utility model are:

[0016] 1. The wire clamping assembly is located at both ends of the wiring hole on the housing. The connecting groove formed by the upper and lower spring plates can stably clamp the wire, ensuring the reliability of the electrical connection. The wiring bolt is threaded into the screw hole, and the design of the connector head and the wiring bolt rotating together allows the user to easily adjust the pressure of the upper and lower spring plates on the wire by simply turning the wiring bolt. This ensures the stability of the connection and facilitates the installation and removal of the wire, improving the convenience of wiring operations.

[0017] 2. The upper and lower spring contacts are made of shape memory metal. When the terminal block heats up due to the resistance generated by the current, and the temperature rises to a certain level, the shape memory metal upper and lower spring contacts will bend and deform in opposite directions, automatically disconnecting the electrical connection between the wire and the upper spring contact. This automatic overheating disconnection mechanism can promptly cut off the current path, preventing further heat accumulation and effectively preventing safety accidents such as terminal block aging and fires caused by overheating, greatly improving the safety of electrical system operation. At the same time, it reduces losses and damage caused by overheating, significantly extends the service life of the terminal block, reduces maintenance costs and replacement frequency, and has good economic benefits and practical value.

[0018] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the upper part of this utility model.

[0022] Figure 3 This is a bottom view of the present invention.

[0023] Figure 4 for Figure 3 A schematic diagram of the cross section of AA.

[0024] Figure 5 This is a schematic diagram of the wire pressing assembly.

[0025] Figure 1-5 In the middle: 1. Outer shell; 2. Wiring hole; 3. Screw hole; 4. Wiring bolt; 5. Connector; 6. Upper spring; 7. Lower spring; 8. Connecting groove; 9. Base; 10. Connecting plate; 11. Connecting post; 12. "T" shaped rotating post; 13. "T" shaped hole; 14. First bolt; 15. Second bolt; 16. Mounting groove; 17. Fitting groove; 18. Fixing part; 19. Elastic arc-shaped part; 20. Wire pressing part; 21. Hexagonal screw head; 22. Cross groove; 23. Slotted groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] This utility model provides a wiring terminal.

[0029] In this embodiment, refer to Figure 1-5 The terminal block includes a housing 1 and a wire clamping assembly. The wire clamping assembly is disposed at both ends of the wiring hole 2 of the housing. The two ends of the wiring hole 2 are provided with screw holes 3. The wire clamping assembly includes a wiring bolt 4, a connector 5, an upper spring 6, and a lower spring 7.

[0030] The wiring bolt is threaded into the screw hole;

[0031] The connector is rotatably fitted with the wiring bolt;

[0032] The upper spring is connected to the connector head, and the lower spring is connected to the bottom wall of the wiring hole. A connecting groove 8 for connecting wires is formed between the upper spring and the lower spring.

[0033] Both the upper and lower springs are made of shape memory metal. When heated, the upper and lower springs bend and deform in opposite directions to break the electrical connection between the wire and the upper spring.

[0034] In the above technical solution, the wire clamping assembly is installed at both ends of the wiring hole. The clamping bolts and screw holes are threaded together to fix the assembly and adjust the pressure. The connector rotates with the wiring bolts, allowing the upper spring to adjust its position as the bolts are turned. The upper and lower springs form a connecting groove for clamping the wire. The upper and lower springs are made of shape memory metal. Utilizing the heat-deformation properties of shape memory metal, when the temperature rises, the upper and lower springs contract and bend in opposite directions, disconnecting the electrical connection between the wire and the upper spring.

[0035] The overall structural design enables reliable wire connection and convenient installation and disassembly. The springs made of shape memory metal provide automatic overheat protection for the terminals, effectively preventing electrical faults and safety hazards caused by overheating, improving the safety and reliability of the terminals, and extending their service life.

[0036] Specifically, the connector includes a base 9, a connecting plate 10, a connecting post 11, and a "T"-shaped rotating post 12. The "T"-shaped rotating post 12 is rotatably connected to the "T"-shaped hole 13 at the bottom of the wiring bolt. The upper spring plate is connected to the connecting plate by a first bolt 14.

[0037] In this embodiment, the "T"-shaped rotating post of the connector is rotatably connected to the "T"-shaped hole at the bottom of the wiring bolt, allowing the connector to rotate flexibly relative to the wiring bolt, facilitating the adjustment of the upper spring plate position; the connecting plate is used to fix the upper spring plate, and the upper spring plate and the connecting plate are connected by the first bolt to ensure the stability and detachability of the connection.

[0038] Specifically, the wiring hole has an arched structure, and the lower spring is connected to the bottom wall of the wiring hole by the second bolt 15.

[0039] In this embodiment, the lower spring is connected to the bottom wall of the wiring hole by the second bolt, which can reliably fix the lower spring and facilitate the disassembly and replacement of the spring.

[0040] Specifically, the bottom of the outer casing is provided with a mounting groove 16, and the two sides of the mounting groove 16 are provided with fitting grooves 17.

[0041] In this embodiment, the mounting groove at the bottom of the housing can be used to splice or fix with other components, and the fitting grooves on both sides can cooperate with the appropriate protruding structure to achieve precise positioning and tight fitting with other components.

[0042] Specifically, both the upper and lower springs include a fixing part 18, an elastic arc-shaped part 19, and a pressing part 20, which are integrally formed.

[0043] In this embodiment, the fixing portions of the upper and lower springs are used for fixed connection with the connector or the bottom wall of the wiring hole; the elastic arc-shaped portion utilizes the elastic deformation characteristics of the arc structure to increase the elasticity and restoring force of the spring, thereby enhancing the clamping force on the wire; the wire-pressing portion directly contacts the wire, achieving stable clamping and electrical connection of the wire. The one-piece molding process ensures the strength and integrity of the connection between the various parts of the spring.

[0044] Specifically, the top of the wiring bolt has a hexagonal screw head 21, and the top of the hexagonal screw head 21 is provided with a cross groove 22 and a slotted groove 23.

[0045] In this embodiment, the hexagonal screw head on the top of the wiring bolt facilitates tightening with a hex wrench, providing greater torque; the Phillips head and flathead head slots allow users to operate with either a Phillips head screwdriver or a flathead screwdriver, increasing the variety of operating tools available.

[0046] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A terminal block, characterized in that: The device includes a housing and a wire clamping assembly. The wire clamping assembly is disposed at both ends of the wiring hole in the housing. The two ends of the wiring hole are provided with screw holes. The wire clamping assembly includes a wiring bolt, a connector, an upper spring, and a lower spring. The wiring bolt is threaded into the screw hole; The connector is rotatably fitted with the wiring bolt; The upper spring is connected to the connector head, and the lower spring is connected to the bottom wall of the wiring hole. A connecting groove for connecting wires is formed between the upper spring and the lower spring. Both the upper and lower springs are made of shape memory metal. When heated, the upper and lower springs bend and deform in opposite directions to break the electrical connection between the wire and the upper spring.

2. The terminal block according to claim 1, characterized in that: The connector includes a chassis, a connecting plate, a connecting post, and a "T"-shaped rotating post. The "T"-shaped rotating post is rotatably connected to the "T"-shaped hole at the bottom of the wiring bolt. The upper spring plate is connected to the connecting plate by a first bolt.

3. The terminal block according to claim 1, characterized in that: The wiring hole has an arched structure, and the lower spring is connected to the bottom wall of the wiring hole by a second bolt.

4. The terminal block according to claim 1, characterized in that: The bottom of the outer casing is provided with a mounting groove, and the two sides of the mounting groove are provided with fitting grooves.

5. The terminal block according to claim 1, characterized in that: Both the upper and lower springs include a fixing part, an elastic arc-shaped part, and a pressure line part, which are integrally formed.

6. The terminal block according to claim 1, characterized in that: The wiring bolt has a hexagonal screw head at the top, and the top of the hexagonal screw head is provided with a cross groove and a slotted groove.

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