Power adapter with overload protection

Abstract

The utility model relates to the technical field of power adapters, in particular to a power adapter with overload protection, a wiring assembly is mounted outside an adapter main body, a protection assembly is mounted at a position, corresponding to the wiring assembly, inside the adapter main body, and the wiring assembly comprises a power line mounted at the outer end of the adapter main body. A protection box is fixedly installed at the outer end of the adapter body, a plug wire is fixedly installed at the outer end of the protection box, a box cover is detachably installed at the top of the protection box, a button is installed in the middle of the top of the box cover, and an indicator lamp is installed on the inner end face of the adapter body. The power adapter with overload protection can realize automatic power off when the current is too large, can effectively perform sight overload protection, improves the use safety of the power adapter, improves the practicability of the whole device, and brings a better use prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of power adapters, in particular to a power adapter with overload protection. Background Art

[0002] With the development of society, people are using mobile phones and computers in their daily life as electronic devices are gradually improved. In order to charge them conveniently and quickly, they will use power banks and power adapters. Power adapters are power supply conversion devices for small portable electronic devices and electronic appliances. They are generally composed of housing, transformer, inductor, capacitor, control IC, PCB board and other components.

[0003] For example, a Chinese patent discloses a power adapter with overload protection function (authorization announcement number CN217389163U). This patented technology can accelerate the heat dissipation by virtue of its own insulation and thermal conductivity, and has good high temperature resistance and explosion-proof performance. A heat dissipation mechanism is installed between the porcelain shell and the shell, which accelerates the overall heat dissipation speed and heat dissipation efficiency of the power adapter.

[0004] However, the power adapter disclosed above still has some defects when in use: when the device is in use, it cannot automatically cut off the power when the current is too large, and the overload protection performance is low, which leads to excessive heat, damage to the power adapter, and even fire, affecting the safety during use. Therefore, those skilled in the art provide a power adapter with overload protection to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a power adapter with overload protection to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A power adapter with overload protection comprises an adapter body, a wiring assembly is installed on the outside of the adapter body, and a protection assembly is installed at a position corresponding to the wiring assembly inside the adapter body;

[0008] The wiring assembly includes a power cord installed at the outer end of the adapter body, a protective box is fixedly installed at the outer end of the adapter body, a plug wire is fixedly installed at the outer end of the protective box, a box cover is detachably installed on the top of the protective box, a button is installed at the middle of the top of the box cover, and an indicator light is installed at the inner end surface of the adapter body;

[0009] The protection component includes a power-on box installed at the bottom of the protection box, a second connection wire is connected to the outer end of the power-on box corresponding to the position of the power cord, a power-on cover is installed on the top of the power-on box, a first connection wire is fixedly installed on the outer end of the power-on cover, and the outer end of the first connection wire is connected to the plug wire, a power-on block is installed at the bottom of the power-on cover corresponding to the position of the first connection wire, a power-on seat is embedded and installed in the interior of the power-on box corresponding to the position of the power-on block, and push springs are installed at the four corners of the upper surface of the power-on box.

[0010] As a further solution of the utility model: a matching connection groove is provided inside the power-on box at a position corresponding to the power-on seat, and a magnetic tripping coil is connected to the input end of the power-on seat.

[0011] As a further solution of the utility model: a connecting sleeve is embedded and installed in the middle of the inner part of the magnetic tripping coil, and a trigger rod is slidably connected to the inner part of the connecting sleeve.

[0012] As a further solution of the utility model: a matching connection hole is opened inside the power box at the position corresponding to the trigger rod, a third connection wire is installed at the outer end of the magnetic tripping coil, and the third connection wire is connected to the second connection wire.

[0013] As a further solution of the utility model: connecting seats are symmetrically installed on both sides of the outside of the power-on cover, and a connecting shaft is rotatably connected between the inner sides of the two connecting seats.

[0014] As a further solution of the utility model: the outer end of the connecting shaft is rotatably connected to a fixed clamping plate, and a fixed clamping block is installed at the position of the outer wall of the power box corresponding to the fixed clamping plate.

[0015] As a further solution of the utility model: a disc spring is installed on the outer sleeve of the connecting shaft, and a bimetallic strip is installed on the outer wall of the power-on cover near the power-on block.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. A power adapter with overload protection. When in use, the power cord is connected through a second connecting wire, so that the power box can be electrically connected to the adapter body, and the power cover can be pushed toward the power box by pressing the button, and the disc spring at the connecting shaft drives the fixed card plate to be stuck in the fixed card block, so that the power box and the power cover can be snapped and connected, and the power block is stuck in the power seat to connect the power. When the magnetic tripping coil at the power block increases with the current, when the current at the magnetic tripping coil increases to a certain extent, the magnetic force at the connecting sleeve becomes larger, driving the trigger rod to be pushed out from the connecting hole, and the fixed card plate can be pushed out by the trigger rod to separate the fixed card block, and the power cover can be lifted up with the help of the pushing spring to cut off the power block and the power seat, so as to cut off the power immediately, effectively realize overload protection, which is better than the traditional method.

[0018] 2. A power adapter with overload protection, a bimetallic strip is composed of two materials with different thermal expansion coefficients. When the current is too large, the bimetallic strip will be deformed by the heat, and the bimetallic strip can push the fixed card outward, so as to separate the fixed card plate and the fixed card block, thereby realizing overload protection. After the bimetallic strip cools down, the power-on cover and the power-on box can be merged again, thereby improving the effect during use, which is better than the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a power adapter with overload protection;

[0020] Figure 2 It is a structural schematic diagram of a power socket in a power adapter with overload protection;

[0021] Figure 3 It is a structural schematic diagram of a power socket in a power adapter with overload protection;

[0022] Figure 4 The present invention is a structural schematic diagram of a power-on cover in a power adapter with overload protection.

[0023] In the figure: 1. adapter body; 2. power cord; 3. protection box; 4. plug wire; 5. box cover; 6. indicator light; 7. button; 8. power box; 9. power cover; 10. first connecting wire; 11. second connecting wire; 12. power block; 13. power seat; 14. connecting sleeve; 15. trigger rod; 16. magnetic trip coil; 17. third connecting wire; 18. push spring; 19. fixed card plate; 20. fixed card block; 21. connecting hole; 22. connecting groove; 23. bimetallic strip; 24. connecting seat; 25. connecting shaft; 26. coil spring. DETAILED DESCRIPTION

[0024] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 4 In an embodiment of the utility model, a power adapter with overload protection includes an adapter body 1, a wiring assembly is installed on the outside of the adapter body 1, and a protection assembly is installed at a position corresponding to the wiring assembly inside the adapter body 1;

[0026] The wiring assembly includes a power cord 2 installed at the outer end of the adapter body 1, a protective box 3 is fixedly installed at the outer end of the adapter body 1, a plug wire 4 is fixedly installed at the outer end of the protective box 3, a box cover 5 is detachably installed on the top of the protective box 3, a button 7 is installed in the middle of the top of the box cover 5, and an indicator light 6 is installed on the inner end surface of the adapter body 1, and the operating status of the adapter body 1 is prompted by the indicator light 6;

[0027] The protection component includes a power-on box 8 installed at the bottom of the protection box 3, and the outer end of the power-on box 8 is connected to the second connection line 11 corresponding to the position of the power cord 2, and a power-on cover 9 is installed on the top of the power-on box 8. The outer end of the power-on cover 9 is fixedly installed with a first connection line 10, and the outer end of the first connection line 10 is connected to the plug wire 4, and a power-on block 12 is installed at the bottom of the power-on cover 9 corresponding to the position of the first connection line 10. The inside of the power-on box 8 is embedded with a power-on seat 13 corresponding to the position of the power-on block 12. The four corners of the upper surface of the power-on box 8 are installed with push-up springs 18. The push-up springs 18 lift the power-on cover 9 to cut off the power-on block 12 and the power-on seat 13, thereby cutting off the power immediately and effectively realizing overload protection.

[0028] exist Figure 1-4In the figure: a matching connection groove 22 is provided inside the power-on box 8 at the position corresponding to the power-on seat 13, a magnetic tripping coil 16 is connected to the input end of the power-on seat 13, a connecting sleeve 14 is embedded and installed in the middle of the magnetic tripping coil 16, a trigger rod 15 is slidably connected inside the connecting sleeve 14, a matching connection hole 21 is provided inside the power-on box 8 at the position corresponding to the trigger rod 15, a third connection wire 17 is installed at the outer end of the magnetic tripping coil 16, and the third connection wire 17 is connected to the second connection wire 11, connection seats 24 are symmetrically installed on both sides of the outside of the power-on cover 9, a connecting shaft 25 is rotatably connected between the inner sides of the two connecting seats 24, and a fixed card plate 19 is rotatably connected to the outer end of the connecting shaft 25, a fixed card block 20 is installed at the outer wall of the power-on box 8 corresponding to the fixed card plate 19, and a disc spring 26 is installed on the outer sleeve of the connecting shaft 25, through the second connection wire 1 1 Connect the power cord 2, then the power box 8 can be electrically connected to the adapter body 1, and the power cover 9 can be pushed toward the power box 8 by pressing the button 7, and the disc spring 26 at the connecting shaft 25 drives the fixed card plate 19 to be stuck in the fixed card block 20, so that the power box 8 can be connected with the power cover 9 by snapping, and the power block 12 is stuck in the power seat 13 for power connection. When the magnetic tripping coil 16 at the power block 12 increases with the current, when the current at the magnetic tripping coil 16 increases to a certain extent, the magnetic force at the connecting sleeve 14 becomes larger, driving the trigger rod 15 to be pushed out from the connecting hole 21, then the fixed card plate 19 can be pushed out by the trigger rod 15 to separate from the fixed card block 20, and the power cover 9 can be lifted up in cooperation with the pushing spring 18 to cut off the power block 12 and the power seat 13, so as to cut off the power in the first time and effectively realize overload protection.

[0029] exist Figure 2 and 4 Middle: A bimetallic strip 23 is installed on the outer wall of the power-on cover 9 near the power-on block 12. When the current is too large, the bimetallic strip 23 will be deformed by heat, and the fixed card plate 19 can be pushed outward by the bimetallic strip 23, so that the fixed card plate 19 and the fixed card block 20 can be separated, thereby realizing overload protection. Only after the bimetallic strip 23 cools down can the power-on cover 9 and the power-on box 8 be merged again to improve the effect during use.

[0030] The working principle of the utility model is as follows: when in use, the power line 2 is connected through the second connecting wire 11, so that the power box 8 can be electrically connected to the adapter body 1, and the power cover 9 can be pushed toward the power box 8 by pressing the button 7, and the disc spring 26 at the connecting shaft 25 drives the fixed card plate 19 to be stuck in the fixed card block 20, so that the power box 8 and the power cover 9 can be snap-connected, and the power block 12 is stuck in the power seat 13 for power connection. When the magnetic tripping coil 16 at the power block 12 increases with the current, when the current at the magnetic tripping coil 16 increases to a certain extent, the magnetic force at the connecting sleeve 14 becomes larger, driving the trigger rod 15 to be pushed out from the connecting hole 21, and then the power box 8 can be snap-connected. The fixed card plate 19 is pushed out by the trigger rod 15 to separate the fixed card block 20, and the power-on cover 9 is lifted up in cooperation with the pushing spring 18 to cut off the power-on block 12 and the power-on seat 13, thereby cutting off the power in the first place and effectively realizing overload protection. The bimetallic strip 23 is composed of two materials with different thermal expansion coefficients. When the current is too large, the bimetallic strip 23 will be deformed by heat, and the fixed card plate 19 can be pushed outward by the bimetallic strip 23, so that the fixed card plate 19 and the fixed card block 20 can be separated, thereby realizing overload protection. After the bimetallic strip 23 cools down, the power-on cover 9 and the power-on box 8 can be merged again, thereby improving the effect during use, facilitating use by users, and being more practical.

Claims

1. A power adapter with overload protection, comprising an adapter body (1), characterized in that: A wiring assembly is installed on the outside of the adapter body (1), and a protection assembly is installed on the inside of the adapter body (1) at a position corresponding to the wiring assembly; The wiring assembly comprises a power cord (2) mounted on the outer end of an adapter body (1); a protective box (3) is fixedly mounted on the outer end of the adapter body (1); a plug wire (4) is fixedly mounted on the outer end of the protective box (3); a box cover (5) is detachably mounted on the top of the protective box (3); a button (7) is mounted in the middle of the top of the box cover (5); and an indicator light (6) is mounted on the inner end surface of the adapter body (1); The protection component comprises a power-on box (8) installed at the bottom of the protection box (3); a second connection wire (11) is connected to the outer end of the power-on box (8) at a position corresponding to the power line (2); a power-on cover (9) is installed on the top of the power-on box (8); a first connection wire (10) is fixedly installed on the outer end of the power-on cover (9), and the outer end of the first connection wire (10) is connected to the plug wire (4); a power-on block (12) is installed at the bottom of the power-on cover (9) at a position corresponding to the first connection wire (10); a power-on seat (13) is installed in the power-on box (8) at a position corresponding to the power-on block (12); and push springs (18) are installed at four corners of the upper surface of the power-on box (8).

2. A power adapter with overload protection according to claim 1, characterized in that: A matching connection groove (22) is provided inside the power-on box (8) at a position corresponding to the power-on seat (13), and the input end of the power-on seat (13) is connected to a magnetic tripping coil (16).

3. A power adapter with overload protection according to claim 2, characterized in that: A connecting sleeve (14) is embedded and installed in the middle of the magnetic tripping coil (16), and a trigger rod (15) is slidably connected to the inside of the connecting sleeve (14).

4. A power adapter with overload protection according to claim 3, characterized in that: A matching connection hole (21) is provided inside the power-on box (8) at a position corresponding to the trigger rod (15); a third connection wire (17) is installed at the outer end of the magnetic trip coil (16), and the third connection wire (17) is connected to the second connection wire (11).

5. The power adapter with overload protection according to claim 1, characterized in that: Connecting seats (24) are symmetrically mounted on both sides of the exterior of the power-on cover (9), and a connecting shaft (25) is rotatably connected between the inner sides of the two connecting seats (24).

6. A power adapter with overload protection according to claim 5, characterized in that: The outer end of the connecting shaft (25) is rotatably connected to a fixed clamping plate (19), and a fixed clamping block (20) is installed at a position of the outer wall of the power supply box (8) corresponding to the fixed clamping plate (19).

7. The power adapter with overload protection according to claim 5, characterized in that: The outer sleeve of the connecting shaft (25) is provided with a disc spring (26), and the outer wall of the power supply cover (9) is provided with a bimetallic strip (23) near the power supply block (12).

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