Power-off protection device for wireless charger

Abstract

The utility model discloses a wireless charger power-off protection device, which relates to the technical field of power-off protection and comprises a power box, an input rod and an output rod are symmetrically and movably sleeved on the inner wall of the power box, conductive heads are fixedly arranged at one end of the input rod and one end of the output rod, and two conductive balls are fixedly connected on the side wall of an arc-shaped conductive plate. Each conductive ball is attached to the corresponding conductive head, and the first electromagnet and the second electromagnet are opposite magnets. Through the arrangement of the first electromagnet and the second electromagnet, the first electromagnet is adsorbed on the side wall of the second electromagnet when the charger is normally used, the first electromagnet and the second electromagnet lose magnetism when a circuit is short-circuited, and then the stretching mechanism drives the two conductive balls to be separated from the corresponding conductive heads. And a closed loop cannot be formed between the input rod and the output rod, so that the circuit can be effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of power-off protection, in particular to a power-off protection device for a wireless charger. Background Art

[0002] For the protection of the charger during the charging process, most of them are to disconnect the circuit in time when a short circuit occurs. However, in actual use, when the charging circuit is short-circuited, the current in the circuit is large, and the gap where the automatic circuit-breaking device disconnects the circuit is small, which can easily cause the current to break through the air and continue to connect.

[0003] After searching, a charger power-off protection device with publication number CN210898597U was found, which includes an insulating box. A sealing groove is provided on the right outer wall of the insulating box. The right side of the insulating box is inserted into the inner cavity of the sealing frame. The outer wall of the insulating box and the left outer wall of the sealing frame are fixedly connected by locking screws. The inner cavity of the insulating box is provided with left-right symmetrical input rods and output rods.

[0004] However, the existing charger power-off protection device has certain drawbacks when in use. Although the device can protect against circuit breaking, the insulating plug plate against one side of the fuse can easily cause the fuse connection to break, resulting in poor power-off protection effect. Utility Model Content

[0005] In view of the problems existing in the above-mentioned existing charger power-off protection device, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a wireless charger power-off protection device, which solves the problem that although the device can protect against circuit breaks, the insulating plug plate against one side of the fuse is likely to cause the fuse connection to break, resulting in poor power-off protection effect.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A power-off protection device for a wireless charger comprises a power box, the inner wall of which is symmetrically and movably sleeved with an input rod and an output rod, one end of each of the input rod and the output rod is fixedly provided with a conductive head, the inner wall of the power box is rotatably connected with a rotating rod, the rod wall of the rotating rod is fixedly sleeved with a rotating plate, the side wall of the rotating plate is fixedly connected with an arc-shaped conductive plate, the side wall of the arc-shaped conductive plate is fixedly connected with two conductive balls, each of the conductive balls is fitted with a corresponding conductive head, a first electromagnet is fixedly provided with a mounting plate on the inner wall of the power box, a second electromagnet is provided on one side of the first electromagnet, the first electromagnet and the second electromagnet are opposite-sex magnets, a stretching mechanism is provided at the bottom of the second electromagnet, and the rotating plate matches the stretching mechanism.

[0009] Preferably, the stretching mechanism comprises two connecting plates and a U-shaped connecting rod, the two connecting plates are fixedly connected to the second electromagnet and the rotating plate respectively, and the two ends of the U-shaped connecting rod are rotatably connected to the side walls of the corresponding connecting plates respectively.

[0010] Preferably, a fixing plate is fixedly connected to the inner wall of the power box, two first telescopic rods are fixedly connected to the side wall of the fixing plate, and the other ends of the two first telescopic rods are fixedly connected to the second electromagnet.

[0011] Preferably, a plurality of buffer springs are fixedly connected to the inner wall of the power box, the other ends of the plurality of buffer springs are commonly fixedly connected to a buffer plate, and the arc-shaped conductive plate is arranged above the buffer plate.

[0012] Preferably, a connecting groove is provided on the inner wall of the power box, and an insulating handle is fixedly connected to the top of the second electromagnet, and the insulating handle is movably arranged inside the connecting groove.

[0013] Preferably, the rod walls of the input rod and the output rod are symmetrically fixedly connected with two side plates, and each of the side plates is threadedly connected to the inner wall of the power box via a second bolt.

[0014] Preferably, a second telescopic rod is movably sleeved inside each of the buffer springs, one end of each of the second telescopic rods is fixedly connected to the inner wall of the power box, and the other end of each of the second telescopic rods is fixedly connected to the buffer plate.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] 1. The utility model provides a first electromagnet and a second electromagnet. When the charger is in normal use, the first electromagnet is adsorbed on the side wall of the second electromagnet. When the circuit is short-circuited, the first electromagnet and the second electromagnet lose their magnetism, and then the stretching mechanism drives the two conductive balls to separate from the corresponding conductive heads, and makes it impossible to form a closed loop between the input rod and the output rod, thereby effectively protecting the circuit.

[0017] 2. The utility model has a stretching mechanism, and when the circuit is restored to use, pushing the insulating handle can make the first electromagnet contact smoothly with the second electromagnet, and the stretching mechanism can drive the rotating plate to rotate smoothly, thereby achieving smooth contact between the two conductive balls and the corresponding conductive heads.

[0018] 3. The utility model provides a plurality of buffer springs and buffer plates, wherein the other ends of the plurality of buffer springs are fixedly connected to the buffer plates. When the circuit is disconnected, the rotating plate can drive the arc-shaped conductive plate to rotate, and the arc-shaped conductive plate can smoothly rotate and be pressed down to the surface of the buffer plate. The plurality of buffer springs are squeezed synchronously, thereby being able to effectively protect the arc-shaped conductive plate and prevent the arc-shaped conductive plate from being damaged by collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 2 For the utility model Figure 1 A magnified view of part A;

[0022] Figure 3 For the utility model Figure 1 Schematic diagram of the three-dimensional structure of the U-shaped connecting rod.

[0023] Description of reference numerals:

[0024] 1. Power box; 2. Input rod; 3. Output rod; 4. Conductive head; 5. Rotating rod; 6. Rotating plate; 7. Arc-shaped conductive plate; 8. Conductive ball; 9. First electromagnet; 10. Second electromagnet; 11. Connecting plate; 12. U-shaped connecting rod; 13. Fixed plate; 14. First telescopic rod; 15. Buffer spring; 16. Buffer plate; 17. Insulating handle; 18. Side plate; 19. Second telescopic rod. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model embodiment discloses a power-off protection device for a wireless charger.

[0027] The utility model provides Figure 1-2 A wireless charger power-off protection device shown in the figure comprises a power box 1, the inner wall of the power box 1 is symmetrically and movably sleeved with an input rod 2 and an output rod 3, one end of the input rod 2 and the output rod 3 are fixedly provided with a conductive head 4, the inner wall of the power box 1 is rotatably connected with a rotating rod 5, the rod wall of the rotating rod 5 is fixedly sleeved with a rotating plate 6, the side wall of the rotating plate 6 is fixedly connected with an arc-shaped conductive plate 7, the side wall of the arc-shaped conductive plate 7 is fixedly connected with two conductive balls 8, each conductive ball 8 is fitted with the corresponding conductive head 4, the inner wall of the power box 1 is fixedly provided with a first electromagnet 9 through a mounting plate, a second electromagnet 10 is provided on one side of the first electromagnet 9, the first electromagnet 9 and the second electromagnet 10 are opposite magnets, a stretching mechanism is provided at the bottom of the second electromagnet 10, and the rotating plate 6 matches the stretching mechanism.

[0028] In order to achieve smooth contact between the two conductive balls 8 and the corresponding conductive heads 4, Figure 1 and Figure 3 As shown, the stretching mechanism includes two connecting plates 11 and a U-shaped connecting rod 12. The two connecting plates 11 are fixedly connected to the second electromagnet 10 and the rotating plate 6 respectively, and the two ends of the U-shaped connecting rod 12 are rotatably connected to the side walls of the corresponding connecting plates 11 respectively.

[0029] In order to effectively support the second electromagnet 10, Figure 1-2 As shown, a fixing plate 13 is fixedly connected to the inner wall of the power box 1 , and two first telescopic rods 14 are fixedly connected to the side wall of the fixing plate 13 . The other ends of the two first telescopic rods 14 are fixedly connected to the second electromagnet 10 .

[0030] In order to effectively protect the arc-shaped conductive plate 7 and prevent the arc-shaped conductive plate 7 from being damaged by collision, Figure 1-2 As shown, a plurality of buffer springs 15 are fixedly connected to the inner wall of the power box 1 , a buffer plate 16 is commonly fixedly connected to the other ends of the plurality of buffer springs 15 , and the arc-shaped conductive plate 7 is arranged above the buffer plate 16 .

[0031] In order to ensure that the insulating handle 17 can smoothly push the second electromagnet 10 to move to the side of the first electromagnet 9, as shown in FIG. Figure 1-2 As shown, a connection groove is provided on the inner wall of the power box 1, and an insulating handle 17 is fixedly connected to the top of the second electromagnet 10, and the insulating handle 17 is movably arranged inside the connection groove.

[0032] In order to dismantle the input rod 2 and the output rod 3 for inspection or replacement, Figure 1-2 As shown, the rod walls of the input rod 2 and the output rod 3 are symmetrically fixedly connected with two side plates 18, and each side plate 18 is threadedly connected to the inner wall of the power box 1 through a second bolt.

[0033] Finally, in order to limit the expansion and contraction of the plurality of buffer springs 15 and improve the expansion and contraction stability of the plurality of springs 15, as Figure 1-2 As shown, each buffer spring 15 is movably sleeved with a second telescopic rod 19 , one end of each second telescopic rod 19 is fixedly connected to the inner wall of the power box 1 , and the other end of each second telescopic rod 19 is fixedly connected to the buffer plate 16 .

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wireless charger power-off protection device, comprising a power box (1), characterized in that: The inner wall of the power box (1) is symmetrically and movably sleeved with an input rod (2) and an output rod (3), one end of each of the input rod (2) and the output rod (3) is fixedly provided with a conductive head (4), the inner wall of the power box (1) is rotatably connected with a rotating rod (5), the rod wall of the rotating rod (5) is fixedly sleeved with a rotating plate (6), the side wall of the rotating plate (6) is fixedly connected with an arc-shaped conductive plate (7), the side wall of the arc-shaped conductive plate (7) is fixedly connected with two conductive balls (8), each of the conductive balls (8) is fitted with a corresponding conductive head (4), the inner wall of the power box (1) is fixedly provided with a first electromagnet (9) through a mounting plate, a second electromagnet (10) is provided on one side of the first electromagnet (9), the first electromagnet (9) and the second electromagnet (10) are magnets of opposite polarity, a stretching mechanism is provided at the bottom of the second electromagnet (10), and the rotating plate (6) matches the stretching mechanism.

2. A wireless charger power-off protection device according to claim 1, characterized in that: The stretching mechanism comprises two connecting plates (11) and a U-shaped connecting rod (12); the two connecting plates (11) are fixedly connected to the second electromagnet (10) and the rotating plate (6) respectively; and the two ends of the U-shaped connecting rod (12) are rotatably connected to the side walls of the corresponding connecting plates (11).

3. A wireless charger power-off protection device according to claim 1, characterized in that: A fixing plate (13) is fixedly connected to the inner wall of the power box (1), and two first telescopic rods (14) are fixedly connected to the side wall of the fixing plate (13), and the other ends of the two first telescopic rods (14) are fixedly connected to the second electromagnet (10).

4. A wireless charger power-off protection device according to claim 1, characterized in that: A plurality of buffer springs (15) are fixedly connected to the inner wall of the power box (1), the other ends of the plurality of buffer springs (15) are commonly fixedly connected to a buffer plate (16), and the arc-shaped conductive plate (7) is arranged above the buffer plate (16).

5. A wireless charger power-off protection device according to claim 1, characterized in that: The inner wall of the power box (1) is provided with a connection groove, and the top of the second electromagnet (10) is fixedly connected with an insulating handle (17), and the insulating handle (17) is movably arranged inside the connection groove.

6. A wireless charger power-off protection device according to claim 1, characterized in that: The rod walls of the input rod (2) and the output rod (3) are symmetrically fixedly connected to two side plates (18), and each of the side plates (18) is threadedly connected to the inner wall of the power box (1) via a second bolt.

7. A wireless charger power-off protection device according to claim 4, characterized in that: A second telescopic rod (19) is movably sleeved inside each of the buffer springs (15), one end of each of the second telescopic rods (19) is fixedly connected to the inner wall of the power box (1), and the other end of each of the second telescopic rods (19) is fixedly connected to the buffer plate (16).

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