Wiring terminal block with fool-proof function

Abstract

The utility model discloses a wiring terminal block with a fool-proof function, which relates to the technical field of power connection terminal blocks, and comprises a terminal block main body and a cable, one side of the interior of the terminal block main body is connected with an abutting plate, a second spring is connected between the abutting plate and the terminal block main body, the interior of the terminal block main body is connected with a pressing table, and the pressing table is connected with the cable. A first spring is connected between the pressing table and the terminal block main body, and the top of the pressing table is connected with an operating rod. According to the utility model, through the arrangement of the abutting plate and the second spring, the cold-pressed terminal is inserted into the terminal block main body, the cold-pressed terminal abuts against the abutting plate, the abutting plate goes deep into the terminal block main body to compress the second spring along with the insertion of the cold-pressed terminal, and when the abutting plate and the pressing table are staggered, the pressing table corresponds to the cold-pressed terminal. At the moment, the cold-pressed terminal can be limited through the pressing table, and if the cable is not pushed to a designated position, the abutting plate moves leftwards to eject the cable through the tension of the second spring; and potential safety hazards caused by virtual connection and heating of the cable in the terminal block main body are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power connection terminal blocks, in particular to a connection terminal block with a fool-proof function. Background Art

[0002] Wiring terminals mostly refer to wiring terminals, which are divided into single-hole, double-hole, multi-hole, sockets, hooks, etc., and are divided into copper-plated silver, copper-plated zinc, copper, aluminum, iron, etc. Their main function is to transmit electrical signals or conduct electricity. They are used as input and output ports for electrical signals on controllers such as PLCs, and as input and output ports for power on batteries. The wiring positions of equipment such as circuit breakers and leakage protectors can also be called wiring terminals.

[0003] During use, the existing wiring terminals usually directly insert the wire core of the cable into the wiring terminal, or install a cold-pressed terminal on the wire core and connect it to the wiring terminal through the cold-pressed terminal. After insertion, the bolts or gaskets are tightened to hold the wire core or cold-pressed terminal in place, firstly to prevent the cable from falling off, and secondly to ensure that the cable or cold-pressed terminal is tightly connected to the conductor in the wiring terminal to reduce resistance.

[0004] However, during the actual installation process, some workers may fail to tighten the bolts due to carelessness. This may cause the cables to fall off and affect the normal operation of the equipment. In addition, the cables may be loosely connected, making the lines unstable and easy to disconnect. Or, the gap between the cable and the conductor in the terminal is large, resulting in increased resistance, which causes the temperature of the area between the cable and the conductor to rise. Subsequently, the high temperature may cause the terminal to melt and burn, or even cause a fire in the equipment circuit. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a terminal block with an anti-foolproof function to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a terminal block with an anti-foolproof function, comprising a terminal block body and a cable, a back plate is connected to one side of the terminal block body, and a second spring is connected between the back plate and the terminal block body, a pressure platform is connected to the terminal block body, and a first spring is connected between the pressure platform and the terminal block body, a joystick is connected to the top of the pressure platform, a limiting column is connected to the bottom of the pressure platform, and a limiting rod is connected to one side of the bottom of the pressure platform.

[0007] By adopting the above technical solution, the cold-pressed terminal is inserted into the terminal block body. At this time, the cold-pressed terminal is abutted against the abutment plate. As the cold-pressed terminal is inserted, the abutment plate goes deeper into the terminal block body to compress the second spring. When the abutment plate and the pressing platform are offset, it means that the pressing platform corresponds to the cold-pressed terminal. At this time, the cold-pressed terminal can be limited by the pressing platform. If the cable is not pushed to the specified position, the tension of the second spring causes the abutment plate to move left to eject the cable.

[0008] Furthermore, the cross section of the pressing platform is in a "Z" shape, and the operating rod, the pressing platform and the abutment plate are all slidably connected to the terminal block body.

[0009] By adopting the above technical solution, since the cross-section of the pressing platform is Z-shaped, the left side of the pressing platform applies pressure to the pressing ring position of the cold-pressed terminal, so that the cold-pressed terminal firmly holds the cable, avoiding the cable from falling off easily due to the small pressure applied by the cold-pressed terminal during installation.

[0010] Furthermore, two limit rods are provided, and the two limit rods are symmetrically distributed.

[0011] By adopting the above technical solution, one side of the cold-pressed terminal is limited by two limiting rods, so as to prevent the cold-pressed terminal from shifting to the left and falling off from the terminal block body.

[0012] Furthermore, the operating rod passes through the upper part of the terminal block body and extends to the top of the terminal block body.

[0013] By adopting the above technical solution, when disassembly is required, the staff pulls the operating lever upward to move the pressing table upward, and at the same time the first spring is compressed.

[0014] Furthermore, a partition is connected to the top of the terminal block body, a pin is connected to the bottom of the terminal block body, the cable passes through one side of the terminal block body, and a cold-pressed terminal is connected to one end of the cable.

[0015] By adopting the above technical solution, workers can fix the cold-pressed terminal on the core of the cable through a press, thereby facilitating the transmission of current and electrical signals.

[0016] Furthermore, the cold pressed terminal is in abutment with the abutment plate.

[0017] By adopting the above technical solution, if the worker fails to push the cable to the specified position, after the worker lets go, the tension of the second spring causes the plate to move leftward and eject the cable.

[0018] Furthermore, the pressing platform, the limiting column and the limiting rod are all in contact with the cold pressing terminal.

[0019] By adopting the above technical solution, the pressing table moves downward under the influence of the tension of the first spring to press the cold-pressed terminal to avoid the occurrence of false connection. At the same time, the limiting rod and the limiting column are against the cold-pressed terminal to prevent the cold-pressed terminal from falling off due to displacement forward, backward, left and right.

[0020] Furthermore, a logo plate is connected to one side of the top of the terminal block body.

[0021] By adopting the above technical solution, it is easier for staff to know which cable should be inserted, thus reducing the occurrence of errors.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The utility model inserts the cold-pressed terminal into the terminal block body by setting the abutment plate and the second spring. At this time, the cold-pressed terminal abuts against the abutment plate. As the cold-pressed terminal is inserted, the abutment plate goes deep into the terminal block body to compress the second spring. When the abutment plate and the pressing platform are staggered, it means that the pressing platform corresponds to the cold-pressed terminal. At this time, the cold-pressed terminal can be limited by the pressing platform. If the cable is not pushed to the specified position, the tension of the second spring causes the abutment plate to move left and the cable to pop out. This avoids the potential safety hazard caused by the false connection and heating of the cable in the terminal block body.

[0024] 2. The utility model arranges the operating rod, the first spring, the pressing platform, the abutment plate, the second spring, the limiting column and the limiting rod. The pressing platform moves downward under the influence of the tension of the first spring to press the cold-pressed terminal to avoid the occurrence of virtual connection. Since the cross-section of the pressing platform is Z-shaped, the left side of the pressing platform applies pressure to the pressing ring position of the cold-pressed terminal, so that the cold-pressed terminal firmly holds the cable, and avoids the cold-pressed terminal from applying too little pressure during installation, which causes the cable to fall off easily. At the same time, the limiting rod and the limiting column abut against the cold-pressed terminal, and avoids the cold-pressed terminal from falling off due to displacement of the cold-pressed terminal to the left and right. When disassembly is required, only the operating rod needs to be pulled upward to move the pressing platform upward. At this time, the second spring drives the abutment plate to move leftward to push the cold-pressed terminal out to complete the separation work; it is convenient to quickly connect and disassemble the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the press table of the utility model;

[0028] Figure 4 For the utility model.

[0029] In the figure: 1. Terminal block body; 2. Partition; 3. Pin; 4. Cable; 5. Cold-pressed terminal; 6. Identification plate; 7. Joystick; 8. First spring; 9. Pressing platform; 10. Abutment plate; 11. Second spring; 12. Limiting column; 13. Limiting rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0031] The following describes an embodiment of the utility model based on its overall structure.

[0032] Embodiment 1:

[0033] A terminal block with foolproof function, such as Figure 2-Figure 4 As shown, it includes a terminal block body 1 and a cable 4. A resist plate 10 is connected to one side of the terminal block body 1. A second spring 11 is connected between the resist plate 10 and the terminal block body 1. If the cable 4 is not pushed to the specified position, the resist plate 10 will move leftward and the cable 4 will be ejected by the tension of the second spring 11 after the staff lets go. It can also be used to automatically eject the cable 4 when removing the wires. A pressing platform 9 is connected to the terminal block body 1. The cross section of the pressing platform 9 is in the shape of a "Z". A first spring 8 is connected between the pressing platform 9 and the terminal block body 1. The pressing platform 9 moves downward under the influence of the tension of the first spring 8 to press the cold-pressed terminal 5 to avoid the occurrence of virtual connection. Since the cross section of the pressing platform 9 is in the shape of a "Z", the left side of the pressing platform 9 will Pressure is applied to the pressing ring position of the cold-pressed terminal 5; a joystick 7 is connected to the top of the pressing platform 9, and the joystick 7 extends through the upper part of the terminal block body 1 and extends to the top of the terminal block body 1. The joystick 7 is made of non-conductive materials such as flame-retardant nylon PA. The joystick 7, the pressing platform 9 and the abutment plate 10 are all slidably connected to the terminal block body 1. When disassembly is required, the staff pulls the joystick 7 upward to move the pressing platform 9 upward; a limiting column 12 is connected to the bottom of the pressing platform 9, and a limiting rod 13 is connected to one side of the bottom of the pressing platform 9. Two limiting rods 13 are provided, and the two limiting rods 13 are symmetrically distributed. The limiting rod 13 and the limiting column 12 are abutted against the cold-pressed terminal 5 to prevent the cold-pressed terminal 5 from falling off due to displacement forward, backward, left and right.

[0034] See also Figure 1-Figure 4 In the above embodiment, a partition plate 2 is connected to the top of the terminal block body 1, and a pin 3 is connected to the bottom of the terminal block body 1, which can be connected to a circuit board or a controller; a cable 4 passes through one side of the terminal block body 1, and a cold-pressed terminal 5 is connected to one end of the cable 4, and the cold-pressed terminal 5 abuts against the abutment plate 10, and the pressing platform 9, the limiting column 12 and the limiting rod 13 are all abutted against the cold-pressed terminal 5, so as to facilitate the limiting of the cable 4.

[0035] Embodiment 2:

[0036] Based on the above embodiment 1, refer to Figure 1-Figure 3 A marking plate 6 is connected to one side of the top of the terminal block body 1, so that the staff can clearly know which cable 4 should be inserted, thereby reducing the occurrence of errors.

[0037] The implementation principle of the utility model is as follows: first, the staff inserts the cold-pressed terminal 5 into the terminal block body 1, at which time the cold-pressed terminal 5 abuts against the abutment plate 10, and as the cold-pressed terminal 5 is inserted, the abutment plate 10 goes deep into the terminal block body 1 to compress the second spring 11, and when the abutment plate 10 is offset from the pressing platform 9, it means that the pressing platform 9 corresponds to the cold-pressed terminal 5, that is, the cold-pressed terminal 5 is pushed to the specified position, and if the staff fails to push the cable 4 to the specified position, after the staff lets go, the tension of the second spring 11 causes the abutment plate 10 to move leftward to eject the cable 4;

[0038] When the cold-pressed terminal 5 is pushed to the specified position, the abutment plate 10 is offset from the pressing platform 9 so that the pressing platform 9 loses support. At this time, the pressing platform 9 moves downward under the influence of the tension of the first spring 8 to press the cold-pressed terminal 5 to avoid the occurrence of a virtual connection phenomenon. Since the cross-section of the pressing platform 9 is in a Z shape, the left side of the pressing platform 9 applies pressure to the pressing ring position of the cold-pressed terminal 5, so that the cold-pressed terminal 5 firmly holds the cable 4, and avoids the cold-pressed terminal 5 from applying too little pressure during installation, which causes the cable 4 to fall off easily. At the same time, the limiting rod 13 and the limiting column 12 abut against the cold-pressed terminal 5 to prevent the cold-pressed terminal 5 from moving forward, backward, left, and right and causing it to fall off.

[0039] When disassembly is required, the staff pulls the joystick 7 upwards to move the pressing platform 9 upwards. At the same time, the first spring 8 is compressed, and at the same time, the second spring 11 drives the abutment plate 10 to move left to push out the cold-pressed terminal 5 to complete the separation work. Then the staff lets go. At this time, the first spring 8 drives the pressing platform 9 to move downward so that the limit column 12 and the limit rod 13 are against the top of the abutment plate 10 to prevent the pressing platform 9 from moving further downward, thereby facilitating subsequent rewiring.

[0040] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A terminal block with foolproof function, comprising a terminal block body (1) and a cable (4), characterized in that: A resist plate (10) is connected to one side of the terminal block body (1), and a second spring (11) is connected between the resist plate (10) and the terminal block body (1); a pressure platform (9) is connected to the inside of the terminal block body (1), and a first spring (8) is connected between the pressure platform (9) and the terminal block body (1); a joystick (7) is connected to the top of the pressure platform (9); a limiting column (12) is connected to the bottom of the pressure platform (9), and a limiting rod (13) is connected to one side of the bottom of the pressure platform (9).

2. The terminal block with foolproof function according to claim 1, characterized in that: The cross section of the pressing platform (9) is in a "Z" shape, and the operating rod (7), the pressing platform (9) and the abutment plate (10) are all slidably connected to the terminal block body (1).

3. The terminal block with foolproof function according to claim 1, characterized in that: Two limiting rods (13) are provided, and the two limiting rods (13) are symmetrically distributed.

4. The terminal block with foolproof function according to claim 1, characterized in that: The operating rod (7) passes through the upper part of the terminal block body (1) and extends to the top of the terminal block body (1).

5. The terminal block with foolproof function according to claim 1, characterized in that: The top of the terminal block body (1) is connected to a partition (2), the bottom of the terminal block body (1) is connected to a pin (3), the cable (4) passes through one side of the terminal block body (1), and one end of the cable (4) is connected to a cold-pressed terminal (5).

6. The terminal block with foolproof function according to claim 5, characterized in that: The cold pressed terminal (5) is in contact with the abutment plate (10).

7. The terminal block with foolproof function according to claim 6, characterized in that: The pressing platform (9), the limiting column (12) and the limiting rod (13) are all in contact with the cold pressing terminal (5).

8. The terminal block with foolproof function according to claim 5, characterized in that: A marking plate (6) is connected to one side of the top of the terminal block body (1).

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