Charger

Abstract

The utility model discloses a charger comprising a housing, a charging assembly arranged in the housing, pins arranged in the housing, conductive members electrically connected with the pins, and an overload protection assembly. The conductive part comprises a first conductive part and a second conductive part which are spaced from each other, the overload protection assembly comprises a safety device and a protection structure, the first conductive part, the safety device, the charging assembly and the second conductive part are connected in series, and the protection structure is at least partially located between the first conductive part and the second conductive part. The safety device can be broken when the charging assembly breaks down and causes short circuit, the overload protection effect is achieved, the safety performance of the charger is improved, meanwhile, the protection structure is arranged between the first conductive piece and the second conductive piece, and even if chippings generated by breakage of the safety device diffuse to the position between the first conductive piece and the second conductive piece, the safety performance is improved. And the first conductive piece and the second conductive piece cannot be conducted through the chippings, so that the risk of short circuit caused by the chippings is reduced, and the safety performance of the charger is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic device accessories, in particular to a charger. Background Art

[0002] As an important accessory for electronic devices such as mobile phones, in order to ensure safety during use, a fuse is usually provided inside the charger. When a component inside the charger fails and causes a short circuit in the circuit, the fuse will melt and explode, forming an open circuit in the circuit, thus playing an overload protection role.

[0003] However, during the melting and explosion process of the fuse, the debris of the fuse will spread around. Since the debris of the fuse are all conductive media, the circuit may still be conducted through the debris, forming a short circuit state, and there is still a potential safety hazard. Summary of the Utility Model

[0004] In view of this, the utility model provides a new charger to improve the problem that although the existing charger is provided with a fuse, there is still a potential safety hazard.

[0005] A charger provided in this application includes a housing, a charging component installed in the housing, a plug installed in the housing, a conductive member electrically connected to the plug, and an overload protection component;

[0006] The conductive member includes a first conductive member and a second conductive member spaced apart from each other. The overload protection component includes a fuse device and a protection structure. The first conductive member, the fuse device, the charging component, and the second conductive member are connected in series. The protection structure is at least partially located between the first conductive member and the second conductive member.

[0007] In some embodiments, the fuse device is located between the first conductive member and the second conductive member, and the protection structure is at least partially located between the fuse device and the first conductive member, and / or, the protection structure is at least partially located between the fuse device and the second conductive member.

[0008] In some embodiments, the protection structure includes a first insulating plate located between the fuse device and the second conductive member.

[0009] In some embodiments, the protection structure further includes a second insulating plate located between the fuse device and the first conductive member.

[0010] In some embodiments, the first insulating plate and the second insulating plate are symmetrically arranged on opposite sides of the fuse device.

[0011] In some embodiments, in a direction perpendicular to the arrangement direction of the first insulating plate and the second insulating plate, the sizes of the first insulating plate and the second insulating plate are both larger than the size of the fuse device.

[0012] In some embodiments, the charging assembly is provided with an electrical connection point near the first conductive member, and the electrical connection point is located on a side of the second insulating plate away from the fuse device.

[0013] In some embodiments, the housing includes a housing body and an end cover provided on one side of the housing body. The housing body and the end cover enclose a receiving cavity. The charging assembly, the conductive member, and the fuse device are located in the receiving cavity. The plug is installed on the end cover, and the first insulating plate and the second insulating plate are provided on the inner side of the end cover.

[0014] In some embodiments, the first insulating plate and the second insulating plate are disposed near the edge of the end cover and are arranged at intervals along the circumferential direction of the end cover; and / or

[0015] The end cover, the first insulating plate, and the second insulating plate are integrally formed.

[0016] In some embodiments, the protection structure includes an insulating layer attached to the outside of the fuse device; and / or

[0017] The fuse device is a fuse; and / or

[0018] The charging assembly includes a circuit board.

[0019] For the charger provided by the present utility model, the overload protection assembly includes a fuse device and a protection structure. The fuse device can break when a fault occurs in the charging assembly causing a short circuit, so that an open circuit is formed between the first conductive member and the second conductive member, playing a role in overload protection and improving the safety performance of the charger. At the same time, since a protection structure is provided between the first conductive member and the second conductive member, and the protection structure has the characteristic of insulation, that is, non-conductive, therefore, even if the debris generated when the fuse device breaks spreads between the first conductive member and the second conductive member, the first conductive member and the second conductive member cannot be conducted through the debris, reducing the risk of short circuit caused by debris and further improving the safety performance of the charger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a charger provided by an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 an exploded schematic diagram of the charger shown in

[0022] Figure 3 isFigure 2 Exploded schematic view of another perspective of the charger shown in the figure;

[0023] Figure 4 For Figure 1 Schematic structural view of the charger shown in the figure when the housing main body is removed.

[0024] In the figure: 10, charger; 12, housing; 14, charging component; 16, plug; 18, housing main body; 20, end cap; 22, receiving cavity; 24, first conductive member; 26, second conductive member; 28, fuse device; 30, protection structure; 32, first insulating plate; 34, second insulating plate; 36, electrical connection point. Specific embodiments

[0025] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, inside, outside, top, bottom...) in the embodiments of the present invention are only used to explain the relative positional relationship between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, the element can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Please refer to Figures 1 to 4 , a charger 10 provided by an embodiment of the present invention includes a housing 12, a charging component 14, a plug 16, a conductive member, and an overload protection component. The charging component 14 and the plug 16 are installed in the housing 12. The plug 16 is used for plugging into a socket strip or a socket, etc. The conductive member is used to conduct the plug 16 and the charging component 14. The overload protection component is connected between the conductive member and the charging component 14. During the use of the charger 10, when a fault occurs in the charging component 14 and causes a short circuit, the overload protection component can break, disconnecting the connection between the conductive member and the charging component 14 to form an open circuit, thereby playing a role in overload protection and improving the safety performance of the charger 10 during use.

[0029] Understandably, the specific way in which the overload protection component breaks is not limited. For example, it can break by fusing, or by other means of breaking, as long as it can disconnect the conductive member from the charging component 14 when a circuit fault occurs.

[0030] The housing 12 includes a housing main body 18 and an end cap 20 provided on one side of the housing main body 18. The end cap 20 and the housing main body 18 enclose a receiving cavity 22. The charging component 14, the conductive member, and the overload protection component are located in the receiving cavity 22. The pin 16 and the conductive member are respectively installed on the end cap 20 to play a role in supporting the pin 16 and the conductive member.

[0031] Understandably, the charging component 14 can be supported by the end cap 20 or directly fixed in the housing main body 18.

[0032] The specific connection method between the housing main body 18 and the end cap 20 is not limited, such as snap fit, interference fit, mechanical fixing, glue fixing, etc.

[0033] In the present application, the number of conductive members is two. The two conductive members are respectively a first conductive member 24 and a second conductive member 26. The first conductive member 24 and the second conductive member 26 are spaced apart from each other. The pin 16 includes two blades. The first conductive member 24 is electrically connected to one of the blades, and the second conductive member 26 is electrically connected to the other blade.

[0034] Understandably, the pin 16 can be fixed on the end cap 20 or rotatably installed on the end cap 20.

[0035] The specific types of the first conductive member 24 and the second conductive member 26 are not limited, as long as they can achieve the conductive effect, such as wires, metal sheets, etc. In this embodiment, the first conductive member 24 and the second conductive member 26 are both metal elastic pieces. The metal elastic pieces have a certain elasticity and good ductility, ensuring the reliability of the connection.

[0036] In one embodiment, the overload protection component includes a fuse device 28 and a protection structure 30. The fuse device 28 is connected between the conductive member and the charging component 14. When a fault occurs in the charging component 14 resulting in a short circuit, the fuse device 28 can break, disconnecting the conductive member from the charging component 14 to form an open circuit, playing a role in overload protection.

[0037] In the present application, the fuse device 28 is a fuse. The melting point of the fuse is relatively low. When a short circuit occurs, the temperature will rise, causing the fuse to melt.

[0038] The first conductive member 24, the fuse device 28, the charging assembly 14, and the second conductive member 26 are connected in series. Specifically, one end of the first conductive member 24 is connected to one of the inserts, and the other end is connected to one end of the fuse device 28. The other end of the fuse device 28 is connected to the charging assembly 14. One end of the second conductive member 26 is connected to the charging assembly 14, and the other end is connected to the other insert. After the fuse device 28 is blown due to a short circuit, the current can no longer flow from the first conductive member 24 to the charging assembly 14, thus forming an open circuit.

[0039] The first conductive member 24 and the second conductive member 26 are spaced apart from each other. The protection structure 30 is at least partially located between the first conductive member 24 and the second conductive member 26. That is, the protection structure 30 can be entirely located between the first conductive member 24 and the second conductive member 26, or only partially located between the first conductive member 24 and the second conductive member 26, and the other part is located outside the first conductive member 24 and the second conductive member 26. When the fuse device 28 blows, the debris generated by it will spread around. The debris is conductive. When the debris spreads between the first conductive member 24 and the second conductive member 26, the first conductive member 24 may be conducted to the second conductive member 26 through the debris, forming a short circuit. In this application, by providing the protection structure 30 between the first conductive member 24 and the second conductive member 26, the protection structure 30 has the characteristic of insulation, that is, non-conductivity. Therefore, even if the debris generated by the fuse device 28 spreads between the first conductive member 24 and the second conductive member 26, the first conductive member 24 and the second conductive member 26 will be blocked by the protection structure 30 and cannot be conducted through the debris, reducing the risk of short circuit formed by the debris and further improving the safety performance of the charger 10 during use.

[0040] In an embodiment, the fuse device 28 is located between the first conductive member 24 and the second conductive member 26, and both ends of the fuse device 28 are spaced apart from the first conductive member 24 and the second conductive member 26 respectively. The protection structure 30 is at least partially located between the fuse device 28 and the first conductive member 24 and / or the second conductive member 26 to improve the overall structural compactness.

[0041] The protection structure 30 includes a first insulating plate 32, which is located between the fuse device 28 and the second conductive member 26 and is spaced apart from the fuse device 28 and the second conductive member 26 respectively. The first conductive member 24 is directly electrically connected to the fuse device 28, that is, there is no electrical device between the first conductive member 24 and the fuse device 28. The second conductive member 26 is indirectly electrically connected to the fuse device 28 through the charging assembly 14. The fuse device 28 is a fuse in this embodiment. A fuse generally consists of a fusing part and connecting parts located at both ends of the fusing part. The two connecting parts are electrically connected to the first conductive member 24 and the charging assembly 14 respectively. When a short circuit occurs, the fusing part of the fuse will melt. At this time, the connecting part still remains in a conductive state with the first conductive member 24. The first insulating plate 32 is located between the connecting part connected to the first conductive member 24 and the second conductive member 26, preventing the first conductive member 24 from being conducted to the second conductive member 26 through the connecting part and debris of the fuse.

[0042] The protection structure 30 further includes a second insulating plate 34, which is located between the fuse device 28 and the first conductive member 24 and is spaced apart from the fuse device 28 and the first conductive member 24 respectively. The first conductive member 24 and the second conductive member 26 are arranged opposite to each other at intervals. The first insulating plate 32 and the second insulating plate 34 are respectively located on opposite sides of the fuse device 28, that is, the fuse device 28 is located between the first insulating plate 32 and the second insulating plate 34. Specifically, the first insulating plate 32 and the second insulating plate 34 are symmetrically arranged on opposite sides of the fuse device 28. When the debris generated when the fuse device 28 fuses diffuses to both sides, it will be blocked by the first insulating plate 32 and the second insulating plate 34, reducing the diffusion of the debris and reducing the impact of the debris on other electrical components.

[0043] The charging assembly 14 is provided with an electrical connection point 36 at a position close to the first conductive member 24, such as a pin, a solder ball, etc. The electrical connection point 36 is located on the side of the second insulating plate 34 away from the fuse device 28, that is, the electrical connection point 36 can be located between the second insulating plate 34 and the first conductive member 24, or on the side of the first conductive member 24 away from the second insulating plate 34. The second insulating plate 34 can play a role in blocking the diffusion of debris in the direction of the electrical connection point 36, reducing the risk of the first conductive member 24 being conducted to the electrical connection point 36, that is, the charging assembly 14, through the debris.

[0044] Preferably, in the direction perpendicular to the arrangement direction of the first insulating plate 32 and the second insulating plate 34, the sizes of the first insulating plate 32 and the second insulating plate 34 are both larger than the size of the fuse device 28, so as to enhance the effect of the first insulating plate 32 and the second insulating plate 34 in preventing debris from diffusing to both sides.

[0045] In this embodiment, the first insulating plate 32 and the second insulating plate 34 are spaced apart on the inner side of the end cover 20 to prevent interference from the first insulating plate 32 and the second insulating plate 34 when the charging assembly 14 is placed into the shell body 18 .

[0046] The first insulating plate 32 and the second insulating plate 34 are disposed near the edge of the end cover 20 and are spaced apart along the circumference of the end cover 20. The charger 10 of this embodiment has a simple structure and is easy to produce, and is also easy to assemble the end cover 20 with the charging assembly 14 and the shell body 18.

[0047] Preferably, the first insulating plate 32 , the second insulating plate 34 and the end cover 20 are integrally formed to save the assembly process while ensuring the connection strength between the first insulating plate 32 , the second insulating plate 34 and the end cover 20 .

[0048] In one embodiment, the protection structure 30 also includes an insulating layer (not shown) disposed on the outside of the fuse device 28. For example, the insulating layer is formed on the surface of the fuse device 28 by coating. When the fuse device 28 melts and explodes, the insulating layer can act as a buffer to reduce the spread of debris.

[0049] In one embodiment, the charging assembly 14 includes a circuit board 38 , and the fuse 28 and the conductive member are electrically connected to the circuit board 38 , respectively.

[0050] The specific number of circuit boards 38 is not limited. In the present application, the charging component 14 includes two circuit boards 38, and the two circuit boards 38 are electrically connected. The fuse device 28 and the second conductive member 26 are electrically connected to the same circuit board 38. The two circuit boards 38 are perpendicular to each other, forming an L-like shape, and the two circuit boards 38 are respectively close to the adjacent two sides of the shell 12. Specifically, the two circuit boards 38 are respectively close to the adjacent two sides of the shell body 18 in its circumferential direction. By dividing the charging component 14 into two circuit boards 38, and the two circuit boards 38 are perpendicular to each other and close to the inner wall of the shell body 18, the internal space of the shell 12 is fully utilized, which is beneficial to reducing the overall volume of the charger 10, and it is also convenient to arrange electrical components on the circuit board 38.

[0051] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A charger, characterized in that: It includes a housing, a charging assembly mounted on the housing, a plug mounted on the housing, a conductive member electrically connected to the plug, and an overload protection assembly; The conductive member includes a first conductive member and a second conductive member spaced apart from each other, the overload protection component includes a fuse device and a protection structure, the first conductive member, the fuse device, the charging component and the second conductive member are arranged in series, and the protection structure is at least partially located between the first conductive member and the second conductive member.

2. The charger according to claim 1, characterized in that: The fuse device is located between the first conductive member and the second conductive member, the protection structure is at least partially located between the fuse device and the first conductive member, and / or the protection structure is at least partially located between the fuse device and the second conductive member.

3. The charger according to claim 2, characterized in that: The protection structure includes a first insulating plate located between the fuse device and the second conductive member.

4. The charger according to claim 3, characterized in that: The protection structure further includes a second insulating plate located between the fuse device and the first conductive member.

5. The charger according to claim 4, characterized in that: The first insulating plate and the second insulating plate are symmetrically arranged on two opposite sides of the fuse device.

6. The charger according to claim 4, characterized in that: In a direction perpendicular to an arrangement direction of the first insulating plate and the second insulating plate, sizes of the first insulating plate and the second insulating plate are both larger than a size of the fuse device.

7. The charger according to claim 4, characterized in that: The charging component is provided with an electrical connection point at a position close to the first conductive member, and the electrical connection point is located on a side of the second insulating plate away from the fuse device.

8. The charger according to claim 4, characterized in that: The shell includes a shell body and an end cover arranged on one side of the shell body, the shell body and the end cover are combined to form a receiving cavity, the charging component, the conductive part and the fuse device are located in the receiving cavity, the pin is installed on the end cover, and the first insulating plate and the second insulating plate are arranged on the inner side of the end cover.

9. The charger according to claim 8, characterized in that: The first insulating plate and the second insulating plate are disposed near the edge of the end cover and are spaced apart along the circumference of the end cover; and / or The end cover, the first insulating plate and the second insulating plate are integrally formed.

10. The charger according to any one of claims 1 to 9, characterized in that: The protection structure comprises an insulating layer attached to the outer side of the fuse device; and / or The fuse device is a fuse; and / or The charging assembly includes a circuit board.

Images