Short circuit prevention charger

Abstract

The utility model belongs to the technical field of chargers, and discloses a short circuit prevention charger, which comprises a charger main body structure, the charger main body structure comprises a sealed shell and electronic circuit structures such as a voltage conversion circuit, a rectifier bridge, a ceramic discharge tube and the like which are arranged in the sealed shell, and two ends of the charger main body are respectively provided with an input lead and an output lead. The end, close to the output end, of the sealing shell is provided with an extension section, a rotatable transparent cover is installed on the extension section, the extension section is provided with a fusing type fuse, the fusing type fuse is connected to an output wire in a bridging mode, if short circuit happens to an electric product on the downstream of the output end, the fusing type fuse is fused to break a circuit, and therefore the situations such as fire disasters caused by short circuit are avoided. According to the utility model, the structure design is compact and reasonable, the circuit tripping caused by short circuit can be prevented, the other electric appliances cannot be influenced, the fuse is convenient to maintain and replace, the use is convenient, and the safety is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a charger technical field, concretely is a kind of anti short-circuit charger. BACKGROUND

[0002] Charger is a kind of equipment for charging battery or electronic device. It converts the alternating current of power grid into the direct current required to provide power for battery. There are many types of chargers, including mobile phone charger, notebook computer charger, wireless charger, solar charger, etc. Different chargers have different output voltages and currents to meet the needs of different devices.

[0003] Short circuit is a kind of circuit fault, usually refers to the abnormal current along the path, leading to abnormal current increase. Common short circuit reasons include insulation damage, equipment failure, moisture, aging, lightning, etc. Short circuit can cause current to increase suddenly, which may exceed the bearing capacity of electrical equipment, causing internal components to burn or be damaged. The high temperature generated by short circuit may cause fire, especially near cable insulation materials or combustible materials. Short circuit can cause instability of the entire power supply system, which may affect other normal working devices, even cause power trip or system downtime. Short circuit may cause electric shock accidents, especially in the absence of good insulation or protection, which is dangerous to personnel.

[0004] The existing short circuit of electric appliance mostly causes circuit trip, so that all electric devices on the whole line are disconnected. The hazard caused by trip in student dormitory or some specific places is very large. Most schools have strict management. In some specific places such as laboratory or places containing valuable and high-precision instrument equipment, circuit trip affects the use of remaining devices, and may cause damage to instrument equipment. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides an anti short-circuit charger to solve the problems of short circuit causing circuit trip and the like in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an anti short-circuit charger, including charger main body structure, the charger main body structure contains sealed shell and internal voltage conversion circuit, rectifier bridge, ceramic discharge tube electronic circuit structure, the charger main body both ends are respectively equipped with input lead and output lead, the sealed shell is close to the one end of output and is provided with elongated section, and the transparent cover of rotatable is installed on elongated section, and elongated section is equipped with fuse link, and fuse link is connected across output lead.

[0007] Preferably, the sealed shell is close to the one side of output and is equipped with switch, the elongated section is away from the side of sealed shell and is equipped with hinged rotating rod, and elongated section and transparent cover are connected by hinged rotating rod.

[0008] Preferably, the elongated section is provided with a groove, and two groups of left-right connections are arranged in the groove, the two groups of left-right connections are electrically connected with the fuse link, and the left-right connection comprises a fastening screw and an electrically connected sheet, and the two groups of electrically connected sheets are electrically connected with output wires respectively.

[0009] Preferably, the fastening screw is made of insulating material, the top end of the fastening screw is provided with a hand screw rod head, the fastening screw is fixed with a fixing ring, and the electrically connected sheet is sleeved on the fastening screw and arranged at the bottom of the fixing ring.

[0010] Preferably, the sealing shell is provided with a locking device, the locking device comprises a knob, a sliding block and a limiting block, the knob is processed with anti-skid lines, the bottom of the knob is welded with the sliding block, and the end, away from the knob, of the sliding block is provided with the limiting block.

[0011] Preferably, the sealing shell and the transparent cover are provided with avoiding holes corresponding to the knob, the transparent cover is provided with a locking groove corresponding to the sliding block, the sealing shell is provided with a sliding groove corresponding to the sliding block, the sliding groove is provided with a limiting groove corresponding to the limiting block at the end, and the limiting block is slidably connected in the limiting groove, and the sliding block is slidably connected in the sliding groove and the locking groove.

[0012] Compared with the prior art, the anti-short-circuit charger has the following beneficial effects:

[0013] 1. The anti-short-circuit charger is provided with a fuse link, a transparent cover and left-right connections, can prevent short circuit from causing circuit tripping, will not affect the remaining appliances, the fuse link is convenient to maintain and replace, and is convenient to use and good in safety.

[0014] 2. The fuse link is provided, and if short circuit occurs when the device is used for charging, the fuse link will be fused to disconnect the circuit, so that the use of the remaining appliances on the overall circuit will not be affected, the circuit tripping will not be caused, and the use is safe and convenient.

[0015] 3. The transparent cover and the left-right connections are provided, the state of the fuse link can be conveniently observed by using the transparent cover, the left-right connections are hand screw type, the fuse link is convenient to replace after being fused, maintenance is simple and convenient, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is an elongated section schematic view of the utility model;

[0018] Figure 3 It is a fuse link schematic view of the utility model;

[0019] Figure 4The utility model discloses a fastening screw schematic view;

[0020] Figure 5 The utility model discloses a locking device schematic view;

[0021] Figure 6 The utility model discloses a sealed shell and transparent cover cut schematic view;

[0022] Figure 7 The utility model discloses a sealed shell and transparent cover locking schematic view.

[0023] In the drawing: 1, sealed shell, 2, elongated section, 3, transparent cover, 4, fuse type safety wire, 5, switch, 6, articulated rotating rod, 7, left and right connection, 8, fastening screw, 9, electric connection piece, 10, hand screw rod head, 11, fixed ring, 12, push block, 13, sliding block, 14, limit block, 15, avoiding hole, 16, locking groove, 17, sliding groove, 18, limit groove. Specific implementation

[0024] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of the utility model protection.

[0025] Please refer to Figures 1-7 The utility model provides a technical scheme:

[0026] A kind of short-circuit prevention charger, including charger main body structure, charger main body structure includes sealed shell 1 and internal voltage conversion circuit, rectifier bridge, ceramic discharge tube electronic circuit structure, charger main body both ends are equipped with input lead and output lead, sealed shell 1 is close to the end of output and is provided with elongated section 2, rotatable transparent cover 3 is installed on elongated section 2, fuse type safety wire 4 is equipped on elongated section 2, fuse type safety wire 4 is connected across output lead.Ceramic discharge tube is used to prevent short circuit caused by lightning.

[0027] Further, sealed shell 1 is close to the side of output and is equipped with switch 5, elongated section 2 is equipped with articulated rotating rod 6 on the side away from sealed shell 1, and elongated section 2 and transparent cover 3 are connected by articulated rotating rod 6.Using switch 5 can control charger circuit opening and closing, when needing to replace fuse type safety wire 4, switch 5 can be used to quickly disconnect circuit, fuse type safety wire 4 directly disconnects circuit when circuit downstream end short circuit, and greater harm caused by short circuit can be prevented.

[0028] Further, the elongated section 2 is provided with a groove, and two groups of left and right connections 7 are arranged in the groove, and the left and right connections 7 are electrically connected with the fuse 4, and the left and right connections 7 include fastening screws 8 and electrically connected pieces 9, and the two groups of electrically connected pieces 9 are respectively electrically connected with output wires.

[0029] Further, the fastening screws 8 are made of insulating material, the top end of the fastening screw 8 is provided with a hand screw rod head 10, the fastening screw 8 is fixed with a fixed ring 11, and the electrically connected pieces 9 are sleeved on the fastening screw 8 and arranged at the bottom of the fixed ring 11. The operator can directly rotate the fastening screw 8 by using the hand screw rod head 10 to make the screw rise, so as to take out the fuse 4, and after replacing the new fuse 4, the screw and the fixed ring 11 are rotated to descend, the fixed ring 11 clamps the electrically connected pieces 9, so that the electrically connected pieces 9 clamp the fuse 4 with the bottom plate, thereby fixing the fuse 4.

[0030] Further, the sealing shell 1 is provided with a locking device, and the locking device includes a knob 12, a sliding block 13 and a limiting block 14, the knob 12 is processed with anti-skid lines, the bottom of the knob 12 is welded with the sliding block 13, and the end of the sliding block 13 away from the knob 12 is provided with the limiting block 14.

[0031] Further, the sealing shell 1 and the transparent cover 3 are provided with avoiding holes 15 corresponding to the knob 12, the transparent cover 3 is provided with a locking groove 16 corresponding to the sliding block 13, the sealing shell 1 is provided with a sliding groove 17 corresponding to the sliding block 13, and the end of the sliding groove 17 is provided with a limiting groove 18 corresponding to the limiting block 14, the limiting block 14 is slidingly connected in the limiting groove 18, and the sliding block 13 is slidingly connected in the sliding groove 17 and the locking groove 16. The knob 12 can be used to drive the sliding block 13 to slide in the sliding groove 17, when one end of the sliding block 13 slides into the locking groove 16, the locking is completed, and the locking can be opened by reversing the sliding to make the sliding block 13 move out of the locking groove 16, and the limiting groove 18 and the limiting block 14 are used to prevent the locking device from being separated from the sealing shell 1.

[0032] Working principle: when the device is used for charging, the two ends of the connecting wires are respectively connected with the power supply and the electrical product, if the electrical product is short-circuited during the charging process, a large current passes through the fuse 4, the fuse 4 directly melts and breaks the circuit, which can prevent the electrical product from causing fire and other hazards due to short circuit, and can prevent the upstream total circuit from tripping, thereby affecting the operation of the remaining electrical appliances, and the state of the fuse 4 can be observed through the transparent cover 3, when replacing and maintaining, the damaged fuse 4 can be taken out and replaced by directly rotating the fastening screw 8, and the fastening screw 8 is fixed, so that the maintenance is simple and convenient.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A short-circuit-proof charger, comprising a charger body structure, said charger body structure containing a sealed housing (1) and an internal voltage conversion circuit, a rectifier bridge, a ceramic discharge tube electronic circuit structure, said charger body having an input lead and an output lead at its two ends, characterized in that: The sealing shell (1) is provided with an elongated section (2) near the output end, a rotatable transparent cover (3) is installed on the elongated section (2), a fuse (4) is arranged on the elongated section (2), and the fuse (4) is connected across the output wire.

2. A short circuit prevention charger according to claim 1, characterized in that: The sealing shell (1) is provided with a switch (5) near the output end, and the elongated section (2) is provided with a hinged rotating rod (6) on the side away from the sealing shell (1), and the elongated section (2) and the transparent cover (3) are hingedly connected through the hinged rotating rod (6).

3. A short circuit prevention charger according to claim 1, characterized in that: The elongated section (2) is provided with a groove, and two sets of left and right connections (7) are arranged in the groove, the two sets of left and right connections (7) are electrically connected with the fuse (4), the left and right connections (7) include fastening screws (8) and electrically connected pieces (9), and the two sets of electrically connected pieces (9) are electrically connected with the output wire.

4. A short circuit prevention charger according to claim 3, characterized in that: The fastening screw (8) is made of insulating material, the top end of the fastening screw (8) is provided with a hand screw rod head (10), the fastening screw (8) is fixedly provided with a fixed ring (11), and the electrically connected piece (9) is sleeved on the fastening screw (8) and arranged at the bottom of the fixed ring (11).

5. The short circuit prevention charger according to claim 1, characterized by: The sealing shell (1) is provided with a locking device, the locking device includes a dial block (12), a sliding block (13) and a limiting block (14), the dial block (12) is processed with anti-skid lines, the bottom of the dial block (12) is welded with the sliding block (13), and the end away from the dial block (12) of the sliding block (13) is provided with the limiting block (14).

6. A short circuit prevention charger according to claim 5, characterized in that: The sealing shell (1) and the transparent cover (3) are provided with an avoiding hole (15) corresponding to the dial block (12), the transparent cover (3) is provided with a locking groove (16) corresponding to the sliding block (13), the sealing shell (1) is provided with a sliding groove (17) corresponding to the sliding block (13), and the end of the sliding groove (17) is provided with a limiting groove (18) corresponding to the limiting block (14). The limiting block (14) is slidably connected in the limiting groove (18), and the sliding block (13) is slidably connected in the sliding groove (17) and the locking groove (16).

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