Switching power supply over-current protection detection device

Abstract

The utility model relates to the technical field of power supply detection, and discloses a switching power supply overcurrent protection detection device, which comprises a base, a switch button and a detection ampere meter, the switch button and the detection ampere meter are both fixedly arranged on the upper surface of the base, and two sides of the switch button are respectively provided with a first connecting wire and a second connecting wire. One end, far away from the switch button, of the first connecting wire is connected with the detection ammeter; a support is fixedly arranged at the top of the base and located above the switch button, a trigger shell is fixedly arranged at the top of the support, two trigger rods are arranged at the bottom of the trigger shell in a leading-out mode, the same trigger plate is fixedly arranged at the lower ends of the two trigger rods, and the trigger plate is located above the switch button; a PLC control box is fixedly arranged on the top of the support. According to the utility model, an over-current protection and rapid power-off structure is adopted, so that the switching power supply can obtain a rapid power-off protection effect, and the phenomenon of economic loss caused by damage of the switching power supply is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply detection, in particular to an overcurrent protection detection device for a switching power supply. Background Art

[0002] The overcurrent protection detection device of the switching power supply often encounters excessive current caused by overload and voltage output short circuit during use, and mainly plays a protective role. For example: when the load with rated power (PO) of 1000W / 40V is designed, its output current is 25A as the maximum value. When the power output is connected to a load less than power (PO) 1000W / 40V, such as power (PO) 2000W / 40V, the current is 50A, which exceeds the rated power of the switching power supply, and the switching power supply is difficult to withstand such a large power.

[0003] However, the current overcurrent protection detection device for switching power supply cannot quickly cut off the current in the circuit when detecting that the circuit current is large, which makes the switching power supply easily damaged, resulting in unnecessary equipment economic losses. To this end, a switching power supply overcurrent protection detection device is proposed. Utility Model Content

[0004] The utility model aims to solve the problem raised by the background technology and proposes a switching power supply overcurrent protection detection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A switching power supply overcurrent protection detection device comprises a base, a switch button and a detection ammeter, wherein the switch button and the detection ammeter are fixedly mounted on the upper surface of the base, a first wiring and a second wiring are respectively provided on both sides of the switch button, and an end of the first wiring away from the switch button is connected to the detection ammeter; a bracket is fixedly provided on the top of the base and above the switch button, a trigger shell is fixedly provided on the top of the bracket, two trigger rods are led out from the bottom of the trigger shell, the lower ends of the two trigger rods are fixedly provided with the same trigger plate, and the trigger plate is located above the switch button; a PLC control box is fixedly provided on the top of the bracket.

[0007] Preferably, a movable plate is horizontally provided inside the trigger shell, the upper ends of the two trigger rods are fixedly connected to the lower surface of the movable plate, a spring is fixedly provided between the upper surface of the movable plate and the top of the trigger shell, an electromagnetic block is fixedly provided at the bottom of the trigger shell, and a permanent magnet block is fixedly provided on the lower surface of the movable plate, and the electromagnetic block and the permanent magnet block are distributed in corresponding positions.

[0008] Preferably, the electromagnetic block is electrically connected to the PLC control box.

[0009] Preferably, the detection ammeter is electrically connected to the PLC control box.

[0010] Preferably, plug connectors are fixedly provided on both sides of the detection ammeter, and one end of the first wiring is plugged into and matched with the detection ammeter via the plug connector.

[0011] Preferably, the first wiring and the second wiring are away from the switch button and form a closed loop with the switch power supply.

[0012] Preferably, a carrying handle is fixedly provided on the top of the base.

[0013] Compared with the prior art, the utility model provides a switching power supply overcurrent protection detection device, which has the following beneficial effects:

[0014] 1. The switching power supply overcurrent protection detection device is provided with a bracket, a trigger shell, a trigger rod, a trigger plate and a PLC control box. The detection ammeter is used to detect the current size in the circuit. If the current exceeds the rated current, the detection ammeter detects a signal and sends it to the PLC control box. The PLC control box controls the trigger rod and the trigger plate to move downward until the trigger plate contacts the switch button and disconnects the current of the circuit, so that the switching power supply can be quickly powered off to play a protective role.

[0015] 2. The switching power supply overcurrent protection detection device is provided with a moving plate, a spring, an electromagnetic block and a permanent magnet block. The electromagnetic block generates a magnetic force after the power is turned on, so that the electromagnetic block adsorbs the permanent magnet block to move downward, thereby driving the trigger rod and the trigger plate on the moving plate to move downward. When the power of the electromagnetic block is disconnected, the spring applies elastic force to the moving plate, so that the permanent magnet block is automatically separated from the electromagnetic block and drives the trigger rod and the trigger plate to move upward.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model adopts a structure of rapid power-off for overcurrent protection, so that the switching power supply can be quickly powered off to avoid damage to the switching power supply and cause economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a switching power supply overcurrent protection detection device proposed by the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the trigger shell.

[0019] In the figure: 1. base; 2. switch button; 3. detection ammeter; 4. first connection; 5. second connection; 6. bracket; 7. trigger shell; 8. trigger rod; 9. trigger plate; 10. PLC control box; 11. moving plate; 12. spring; 13. electromagnetic block; 14. permanent magnet block; 15. carrying handle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Reference Figure 1 A switching power supply overcurrent protection detection device comprises a base 1, a switch button 2 and a detection ammeter 3, the switch button 2 and the detection ammeter 3 are fixedly mounted on the upper surface of the base 1, a first wiring 4 and a second wiring 5 are respectively arranged on both sides of the switch button 2, an end of the first wiring 4 away from the switch button 2 is connected to the detection ammeter 3, plug connectors are fixedly arranged on both sides of the detection ammeter 3, one end of the first wiring 4 is plugged and matched with the detection ammeter 3 through the plug connector, and the plug connector facilitates the plug-in connection of each wiring with the detection ammeter 3, the first wiring 4 and the second wiring 5 are away from the switch button 2 to form a closed loop with the switching power supply, and the top of the base 1 and A bracket 6 is fixedly provided above the switch button 2, a trigger shell 7 is fixedly provided on the top of the bracket 6, two trigger rods 8 are led out from the bottom of the trigger shell 7, the lower ends of the two trigger rods 8 are fixedly provided with the same trigger plate 9, and the trigger plate 9 is located above the switch button 2, and a PLC control box 10 is fixedly provided on the top of the bracket 6. If the current exceeds the rated current, the ammeter 2 detects a signal and sends it to the PLC control box 10, and the PLC control box controls the trigger rod 8 and the trigger plate 9 to move downward until the trigger plate 9 contacts the switch button 2 to turn off the switch and disconnect the current of the circuit, so that the switch power supply can be quickly powered off to play a protective role.

[0023] Reference Figure 1-2A movable plate 11 is horizontally arranged inside the trigger shell 7, and the upper ends of the two trigger rods 8 are fixedly connected to the lower surface of the movable plate 11. A spring 12 is fixedly arranged between the upper surface of the movable plate 11 and the top of the trigger shell 7. An electromagnetic block 13 is fixedly arranged at the bottom of the trigger shell 7, and a permanent magnet block 14 is fixedly arranged on the lower surface of the movable plate 11. The electromagnetic block 13 and the permanent magnet block 14 are arranged in a corresponding position distribution. The electromagnetic block 13 is electrically connected to the PLC control box 10, and the detection ammeter 3 is electrically connected to the PLC control box 10. When the power of the electromagnetic block 13 is turned on, the PLC control box 10 makes the electromagnetic block 13 generate magnetic force, so that the electromagnetic block 13 absorbs the permanent magnet block 14 and moves downward, thereby driving the trigger rod 8 and the trigger plate 9 on the movable plate 11 to move downward. When the power of the electromagnetic block 13 is disconnected, the spring 12 applies elastic force to the movable plate 11, so that the permanent magnet block 14 is automatically separated from the electromagnetic block 13 and drives the trigger rod 8 and the trigger plate 9 to move upward, and the switch button 2 is turned on at this time.

[0024] Reference Figure 1 A carrying handle 15 is fixedly provided on the top of the base 1, and the carrying handle 15 facilitates the whole device to be carried and used.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A switching power supply overcurrent protection detection device, comprising a base (1), a switch button (2) and a detection ammeter (3), characterized in that: The switch button (2) and the detection ammeter (3) are both fixedly mounted on the upper surface of the base (1); a first wiring (4) and a second wiring (5) are respectively provided on both sides of the switch button (2); an end of the first wiring (4) away from the switch button (2) is connected to the detection ammeter (3); A bracket (6) is fixedly provided on the top of the base (1) and located above the switch button (2); a trigger shell (7) is fixedly provided on the top of the bracket (6); two trigger rods (8) are extended from the bottom of the trigger shell (7); a same trigger plate (9) is fixedly provided at the lower ends of the two trigger rods (8), and the trigger plate (9) is located above the switch button (2); A PLC control box (10) is fixedly provided on the top of the bracket (6).

2. A switching power supply overcurrent protection detection device according to claim 1, characterized in that: A movable plate (11) is horizontally arranged inside the trigger shell (7), the upper ends of the two trigger rods (8) are fixedly connected to the lower surface of the movable plate (11), a spring (12) is fixedly arranged between the upper surface of the movable plate (11) and the top of the trigger shell (7), an electromagnetic block (13) is fixedly arranged at the bottom of the trigger shell (7), and a permanent magnet block (14) is fixedly arranged on the lower surface of the movable plate (11), and the electromagnetic block (13) and the permanent magnet block (14) are arranged in a correspondingly distributed manner.

3. A switching power supply overcurrent protection detection device according to claim 2, characterized in that: The electromagnetic block (13) is electrically connected to the PLC control box (10).

4. A switching power supply overcurrent protection detection device according to claim 1, characterized in that: The detection ammeter (3) is electrically connected to the PLC control box (10).

5. A switching power supply overcurrent protection detection device according to claim 1, characterized in that: Plug connectors are fixedly provided on both sides of the detection ammeter (3), and one end of the first wiring (4) is plugged into and matched with the detection ammeter (3) via the plug connector.

6. A switching power supply overcurrent protection detection device according to claim 1, characterized in that: The first wiring (4) and the second wiring (5) are away from the switch button (2) and form a closed loop with the switch power supply.

7. A switching power supply overcurrent protection detection device according to claim 1, characterized in that: A carrying handle (15) is fixedly provided on the top of the base (1).

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