Electronic device and electronic equipment

Abstract

The utility model provides an electronic device and electronic equipment, the electronic device comprises a circuit board and a safety device, the safety device comprises a shell, a fuse and a first driving part, the shell is provided with a containing cavity, the fuse comprises two pins, and the first driving part is located in the containing cavity; wherein at least one pin is fixedly connected with the circuit board through the connecting piece, the connecting piece has a preset melting point, the pin fixedly connected with the circuit board through the connecting piece is a first pin, and the first driving piece is used for driving the first pin to be electrically disconnected with the circuit board when the connecting piece is melted, so that the circuit is cut off. Continuous temperature rise caused by circuit faults is prevented, and the safety of the electronic equipment is improved.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and particularly to an electronic component and an electronic device. Background Art

[0002] With the progress of technology, the power of electronic devices is getting larger and they are often used in high-temperature outdoor environments. Thus, when a fault occurs in the circuit, the temperature in the circuit rises rapidly, easily burning out the circuit and even causing a fire. To improve the use safety of electronic devices, a fuse needs to be connected in the circuit. When a fault occurs in the circuit, the fuse can cut off the circuit in time to prevent the temperature from rising continuously. However, the current fuse cuts off the circuit by melting itself. In actual use, it is easy to have the phenomenon that the fuse does not melt completely, resulting in the circuit not being cut off, and the reliability is relatively low. Summary of the Utility Model

[0003] In view of this, the embodiments of this application provide an electronic component and an electronic device to facilitate solving the technical problem of relatively low reliability of the insurance device in the prior art.

[0004] In a first aspect, the embodiments of this application provide an electronic component. The electronic component includes: a circuit board; an insurance device, the insurance device includes a housing, a fuse and a first driving member. The housing has a receiving cavity. The fuse includes two pins. The first driving member is located in the receiving cavity. Wherein, at least one of the pins is fixedly connected to the circuit board through a connecting member. The connecting member has a preset melting point. The pin fixedly connected to the circuit board through the connecting member is a first pin. The first driving member is configured to drive the electrical connection between the first pin and the circuit board to be disconnected when the connecting member melts.

[0005] In this embodiment, when a fault occurs in the circuit of the electronic device, causing the temperature to rise to the preset melting point of the connecting member, the connecting member is melted, so that the fixed connection between the pin and the circuit board can be released or the bonding force between the pin and the circuit board can be reduced. At this time, the first driving member can drive the pin to move away from the circuit board, disconnecting the electrical connection between the pin and the circuit board, thereby cutting off the circuit and preventing the temperature from rising continuously due to the circuit fault, improving the safety of the electronic device.

[0006] In a specific embodiment, the pin is soldered to the circuit board through the connecting member.

[0007] In this embodiment, the connecting member can be used as solder, and the pin is soldered to the circuit board through the connecting member, which can improve the connection reliability between the pin and the circuit board.

[0008] In a specific embodiment, the preset melting point of the connecting member is 150°C - 300°C.

[0009] In this embodiment, the connecting member can be a low-melting-point metal and its alloy, including but not limited to bismuth, cadmium, lead, dysprosium, indium, and alloy materials containing the above low-melting-point metals. The preset melting point of the connecting member can be 150°C - 300°C, which can meet the normal operating temperature of the circuit and avoid the phenomenon that the circuit temperature is too high while the connecting member does not melt, resulting in the inability to cut off the circuit.

[0010] In a specific embodiment, the first driving member is an elastic member; along the height direction of the fuse device, two ends of the first driving member are respectively connected to the housing and the first pin.

[0011] In this embodiment, making the first driving member an elastic member can quickly push the pin away from the circuit board, thereby achieving the effect of quickly cutting off the circuit and improving the reliability of the fuse device. Among them, two ends of the first driving member along the height direction of the fuse device can be respectively connected to the inner top wall of the housing and the pin. When the pin is fixedly connected to the circuit board through the connecting member, the first driving member is stretched by force. When a circuit fault of the electronic device causes the temperature to rise and reach the melting point of the connecting member, the connecting member melts, the fixed connection between the pin and the circuit board is released, or the binding force between the pin and the circuit board decreases, the pin can move away from the circuit board under the action of the resilience of the first driving member, so as to disengage from the circuit board, release the electrical connection between the pin and the circuit board, and disconnect the circuit. Two ends of the first driving member along the height direction of the fuse device can also be respectively connected to the inner bottom wall of the housing and the pin. When the pin is fixedly connected to the circuit board through the connecting member, the first driving member is compressed by force. When a circuit fault of the electronic device causes the temperature to rise and reach the melting point of the connecting member, the connecting member melts, the fixed connection between the pin and the circuit board is released, or the binding force between the pin and the circuit board decreases, the pin can move away from the circuit board under the action of the resilience of the first driving member, so as to disengage from the circuit board, release the electrical connection between the pin and the circuit board, and disconnect the circuit.

[0012] In a specific embodiment, when the first pin is fixedly connected to the circuit board through the connecting member, the first driving member is in an elastically deformed state.

[0013] In this embodiment, when the pin is fixedly connected to the circuit board through the connecting member, the first driving member is in an elastically deformed state. Thus, when the temperature reaches the melting point of the connecting member and the connecting member melts, releasing the fixed connection between the pin and the circuit board, the pin can move away from the circuit board under the action of the resilience of the first driving member to disconnect the circuit.

[0014] In a specific embodiment, the fuse device further includes a pre-locking component, which is used to make the first driving member in an elastically deformed state during the assembly of the electronic device, and the pre-locking component can release the restriction on the first driving member after the assembly of the electronic device is completed.

[0015] In this embodiment, during the installation process of the first driving member and the pin, the first driving member needs to be in an elastically deformed state. By providing a pre-locking member that can limit the movement of the first driving member, the first driving member can be fixed in the elastically deformed state, avoiding deformation under the action of the restoring force when the first driving member is unrestricted during the installation process.

[0016] In a specific embodiment, the accommodating cavity includes a first cavity and a second cavity that are connected and communicate with each other. The second cavity is located on the side of the first cavity facing the circuit board. The bottom wall of the second cavity has a through hole. One end of the first pin is located in the first cavity, and the other end of the first pin extends outside the accommodating cavity through the through hole. An arc extinguishing component is provided in the second cavity, and the arc extinguishing component is used to block the through hole when the first pin retracts into the accommodating cavity.

[0017] In this embodiment, an arc extinguishing component can also be provided in the second cavity of the safety device. When the first pin moves away from the circuit board and into the accommodating cavity under the action of the first driving member, the arc extinguishing component can block the through hole, thereby completely cutting off the current, avoiding the occurrence of arcing phenomenon, and improving the use safety of the safety device.

[0018] In a specific embodiment, the arc extinguishing component includes an arc extinguishing piece made of an insulating material. The arc extinguishing piece can move in the second cavity or can elastically deform to block the through hole when the first pin retracts into the accommodating cavity.

[0019] In this embodiment, when the first pin retracts into the accommodating cavity, the arc extinguishing piece made of an insulating material can block the through hole, thereby separating the first pin and the circuit board through the arc extinguishing piece and avoiding the occurrence of arcing phenomenon. At the same time, when the first pin moves relative to the accommodating cavity, the arc extinguishing piece that can move or elastically deform will not interfere with the first pin, ensuring the normal operation of the safety device.

[0020] In a specific embodiment, the arc extinguishing piece has an opening. When the first pin is connected to the circuit board through the connecting member, the first pin passes through the opening. When the first pin retracts into the accommodating cavity, the arc extinguishing piece can elastically deform to block the opening.

[0021] In this embodiment, the arc extinguishing piece is made of a material that can elastically deform (such as silica gel), and can automatically block the through hole when the first pin retracts into the accommodating cavity, avoiding the occurrence of arcing phenomenon. While improving the use reliability of the safety device, it has the advantages of simple structure and easy implementation.

[0022] In a specific embodiment, the arc extinguishing assembly further includes a second driving member connected to the arc extinguishing piece. When the first pin is connected to the circuit board through the connecting member, the arc extinguishing piece abuts against the outer peripheral wall of the first pin to compress the second driving member; when the first pin retracts into the accommodating cavity, the second driving member can drive the arc extinguishing piece to move and block the through hole.

[0023] In this embodiment, the arc extinguishing assembly may further include a second driving member connected to the arc extinguishing piece. When the first pin is connected to the circuit board through the connecting member, the arc extinguishing piece abuts against the outer peripheral wall of the first pin to compress the second driving member; when the first pin retracts into the accommodating cavity, the second driving member can drive the arc extinguishing piece to move to block the through hole, thereby cutting off the current and avoiding the occurrence of arcing. In this embodiment, by providing the arc extinguishing piece and the second driving member, the working reliability of the arc extinguishing assembly can be improved, thereby improving the use effect of the fuse device.

[0024] In a specific embodiment, the outer peripheral wall of the first pin is also welded to the inner peripheral wall of the through hole through the connecting member.

[0025] In this embodiment, the outer peripheral wall of the first pin can also be welded to the inner peripheral wall of the through hole through the connecting member, which can improve the connection reliability between the first pin and the housing and avoid the phenomenon of the first pin loosening and falling off during transportation or installation on the circuit board. And when the temperature rises to the melting point of the connecting member, the connecting member melts, so that the outer peripheral wall of the first pin can be disengaged from the fixed connection with the inner peripheral wall of the through hole, enabling the first pin to move into the accommodating cavity under the drive of the first driving member, completely cutting off the circuit, and ensuring the normal use of the fuse device.

[0026] In a specific embodiment, the two pins are connected by a flexible conductor.

[0027] In this embodiment, the two pins are connected by a flexible conductor. When the first pin moves under the drive of the first driving member, the flexible conductor can deform accordingly to adapt to the first pin at different positions, improving the connection reliability between the two pins.

[0028] In a specific embodiment, the housing includes a first housing and a second housing that are detachably connected, and the first housing and the second housing enclose the accommodating cavity.

[0029] In this embodiment, the housing may include a first housing and a second housing that are detachably connected, which is convenient for the assembly of the internal components of the housing, improves the assembly efficiency, and is also convenient for the installation and disassembly of the pre-locking device. The first housing and the second housing enclose the accommodating cavity.

[0030] In a second aspect, an embodiment of the present application provides an electronic device, which includes electronic components and electronic devices, and the electronic components are electrically connected to the electronic devices.

[0031] In this embodiment, when the electronic device is electrically connected to other components of the electronic device, the fuse device of the electronic device is used to protect the circuit of the electronic device. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of the electronic device provided by the present application in a specific embodiment;

[0033] Figure 2 is Figure 1 a cross-sectional view of the fuse device in a specific embodiment of ;

[0034] Figure 3 is Figure 1 a cross-sectional view of the fuse device in another specific embodiment of ;

[0035] Figure 4 It is a schematic structural diagram of the electronic device provided by the present application in another specific embodiment;

[0036] Figure 5 It is a schematic structural diagram of the electronic device provided by the present application in yet another specific embodiment;

[0037] Figure 6 It is a schematic structural diagram of the electronic device provided by the present application in yet another specific embodiment;

[0038] Figure 7 It is a schematic structural diagram of the electronic device provided by the present application in yet another specific embodiment;

[0039] Figure 8 is Figure 7 a partial enlarged view of part I in ;

[0040] Figure 9 It is a schematic structural diagram of the electronic device provided by the present application in yet another specific embodiment;

[0041] Figure 10 It is a schematic structural diagram of the electronic device provided by the present application in yet another specific embodiment.

[0042] Description of the Reference Numerals:

[0043] 1 - Electronic device;

[0044] 11 - Circuit board;

[0045] 12 - Fuse device;

[0046] 121 - Housing;

[0047] 121a - First housing;

[0048] 121b - Second housing;

[0049] 122 - Fuse;

[0050] 123 - First driving member;

[0051] 124 - Accommodating cavity;

[0052] 124a - First cavity;

[0053] 124b - Second cavity;

[0054] 124c - Through hole;

[0055] 125 - Pin;

[0056] 125a - First pin;

[0057] 125b - Body;

[0058] 125c - Connecting portion;

[0059] 125d - Second pin;

[0060] 126 - Arc extinguishing assembly;

[0061] 126a - Arc extinguishing piece;

[0062] 126b - Second driving member;

[0063] 127 - Flexible conductor;

[0064] 13 - Connecting piece;

[0065] The accompanying drawings here are incorporated into and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Detailed implementation manners

[0066] The terms used in the embodiments of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms "a", "the", and "said" used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0067] It should be understood that the term "and / or" used herein is only a description of the associated relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0068] It should be noted that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the angles shown in the drawings, and should not be construed as limitations on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that a component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component.

[0069] An electronic device generally includes a circuit board and a plurality of components arranged on the circuit board, and the plurality of components are electrically connected. When a fault or abnormality occurs in the circuit of the electronic device, as the current continuously increases, high temperature will be continuously generated. When the temperature is too high, it may burn out the circuit or even cause a fire. Therefore, a fuse device is usually provided on the circuit board. The fuse device is connected to the circuit and can melt itself to cut off the current when the current is abnormal or the temperature is too high, so as to play a role in protecting the safe operation of the circuit.

[0070] Currently, the fuse devices used more are organic temperature fuses, porcelain tube temperature fuses, and square shell temperature fuses. Among them, the organic temperature fuse is composed of a movable contact, a spring, and a fuse element. The current flows from the left lead to the movable contact and then through the metal housing to the right lead. When the external temperature reaches a predetermined temperature, the fuse element of the organic type can melt and compress the spring, and the spring drives the movable contact to separate from the left lead, thereby cutting off the circuit. However, the predetermined melting point of the fuse element of the organic temperature fuse is relatively low, and it can only be used in circuits with a small current flux. Moreover, due to the high temperature during the installation process of the reflow soldering process, the fuse element is likely to melt during the installation process. Therefore, the organic temperature fuse cannot be soldered to the circuit board through the reflow soldering process, and the installation process is complex.

[0071] The ceramic tube type temperature fuse consists of axially symmetric leads, a fusible alloy that melts at a specified temperature, a special mixture that prevents its melting and oxidation, and an insulating ceramic tube. When the ambient temperature rises, a specific resin mixture starts to liquefy. When reaching the melting point, with the help of the resin mixture (increasing the surface tension of the melting alloy), the melting alloy quickly shrinks into a sphere centered on the two end leads under the action of surface tension, thus cutting off the circuit. The shell type temperature fuse consists of two pins connecting a fusible alloy wire, and a specific resin covers the fusible alloy wire. Current can flow from one pin to the other. When the temperature around the temperature fuse rises to its operating temperature, the fusible alloy melts and shrinks into a sphere with the help of surface tension and the special resin, attaching to the ends of the two pins, thus cutting off the circuit. The ceramic tube type temperature fuse and the shell type temperature fuse can be applied to circuits with larger current fluxes, but usually have a relatively large overall volume, and due to the relatively high temperature during the installation process of the reflow soldering process, the fuse element is likely to melt during the installation process. Therefore, neither of them can be soldered to the circuit board through the reflow soldering process, and the installation process is complex.

[0072] To solve the above technical problems, an embodiment of the present application provides an electronic device 1, as Figure 1 shown, Figure 1 which is a schematic structural diagram of the electronic device 1 provided by the present application in a specific embodiment, including a circuit board 11 and a fuse device 12 installed on the circuit board 11. When the electronic device 1 is electrically connected to other components of the electronic equipment, the fuse device 12 of the electronic device 1 is used to protect the circuit of the electronic equipment. As can be seen from Figure 1 , the fuse device 12 includes a housing 121, and the housing 121 has a receiving cavity. In a specific embodiment, the housing 121 may include a first housing 121a and a second housing 121b that are detachably connected, which is convenient for the assembly of the components inside the housing 121, improves the assembly efficiency, and is also convenient for the installation and disassembly of the pre-locking device. The first housing 121a and the second housing 121b enclose the receiving cavity.

[0073] The housing 121 can be made of polytetrafluoroethylene plastic or high-temperature nylon material, which can prevent the housing 121 from deforming when used in a high-temperature environment, and the polytetrafluoroethylene plastic and high-temperature nylon materials are relatively light in weight, which can reduce the overall weight of the fuse device 12 and improve the portability.

[0074] Please refer to Figure 2 and Figure 3 , Figure 2 which is Figure 1 a cross-sectional view of the fuse device 12 in a specific embodiment of Figure 3 which is Figure 1 a cross-sectional view of the fuse device 12 in another specific embodiment of , where the pin 125 is in a connected state with the circuit board 11. As can be seen fromFigure 2 and Figure 3 It can be seen that the protection device 12 further includes a fuse 122 and a first driving member 123. The housing 121 has a receiving cavity 124. The fuse 122 has two pins 125, and the first driving member 123 is located in the receiving cavity 124. Please refer to Figure 1 and Figure 2 . One end of the pin 125 extends out of the receiving cavity 124 and is fixedly connected to the circuit board 11. At least one of the two pins 125 is fixedly connected to the circuit board 11 through a connecting member 13. The connecting member 13 has a preset melting point. The first driving member 123 is configured to drive the pin 125 to separate from the circuit board 11 when the connecting member 13 melts.

[0075] The following takes the example that both of the two pins 125 shown in Figure 2 are fixedly connected to the circuit board 11 through the connecting member 13 for description, that is, the two pins 125 are respectively fixedly connected to the circuit board 11 through two connecting members 13. When a circuit fault occurs in the electronic device and the temperature rises to the preset melting point of the connecting member 13, the connecting member 13 is melted, so that the fixed connection between the pin 125 and the circuit board 11 can be released or the bonding force between the pin 125 and the circuit board 11 can be reduced. As shown in Figure 3 , when the fixed connection between the pin 125 and the circuit board 11 is released or the bonding force between the pin 125 and the circuit board 11 is reduced, the first driving member 123 can drive the pin 125 to move away from the circuit board 11, so that the pin 125 is disconnected from the circuit board 11, thereby cutting off the circuit and preventing the temperature from continuously rising due to the circuit fault, and improving the safety of the electronic device. In addition, since both of the two pins 125 are connected to the circuit board 11 through the connecting member 13, when the temperature rises, both of the two pins 125 can be disconnected from the circuit board 11, and the two ends of the circuit can be disconnected, so as to ensure that the circuit can always be cut off when a circuit fault occurs, and the protection device 12 has higher reliability.

[0076] In this embodiment, the preset melting point of the connecting member 13 can be set according to requirements to meet the temperature requirements of reflow soldering, so that the protection device 12 can be soldered to the circuit board 11 through reflow soldering, reducing the installation difficulty and installation cost. At the same time, by adjusting the current-carrying capacity of the pin 125, the protection device 12 can be used in various circuits with different current values, improving the applicability of the protection device 12.

[0077] In a specific embodiment, as shown in Figure 2 , the pin 125 is soldered to the circuit board 11 through the connecting member 13.

[0078] In this embodiment, the connecting member 13 can be used as solder, so that the pin 125 is soldered to the circuit board 11 through the connecting member 13, which can improve the connection reliability between the pin 125 and the circuit board 11.

[0079] In a specific embodiment, the connecting member 13 can be a low-melting-point metal and its alloy, including but not limited to bismuth metal, cadmium metal, lead metal, dysprosium metal, indium metal, and alloy materials containing the above low-melting-point metals. The preset melting point of the connecting member 13 can be 150°C - 300°C, which can meet the normal operating temperature of the circuit and avoid the phenomenon that the circuit temperature is too high while the connecting member 13 has not melted, resulting in the inability to cut off the circuit. The preset melting point of the connecting member 13 can be 150°C, 200°C, 250°C, 300°C, and so on.

[0080] Meanwhile, during the welding process, materials for assisting welding, including but not limited to ammonium chloride, rosin, etc., can also be added to the connecting member 13 to improve the welding effect.

[0081] In each of the above embodiments, the two pins 125 in the fuse device 12 can be metals and their alloys with good thermal conductivity. When a circuit fault occurs and generates high temperature, the temperature can be quickly conducted to the connecting member 13, so as to cut off the circuit subsequently and improve the use effect of the fuse device. The specific materials of the pins 125 include but not limited to copper materials and their alloys, aluminum materials and their alloys, tin materials and their alloys, and so on. In addition, in the embodiments of the present application, the specific shape of the pins 125 is not limited and can be circular, square, and so on.

[0082] In a specific embodiment, as Figure 2 and Figure 3 shown, the first driving member 123 can be an elastic member, and along the height direction of the fuse device 12, both ends of the first driving member 123 are respectively connected to the housing 121 and the pin 125. This elastic member can elastically deform to drive the pin 125 to move away from the circuit board 11.

[0083] The following details the setting position of the first driving member 123.

[0084] In a specific embodiment, as Figure 2 and Figure 3 shown, both ends of the first driving member 123 along the height direction of the fuse device 12 can be respectively connected to the inner top wall of the housing 121 and the pin 125. When the pin 125 is fixedly connected to the circuit board 11 through the connecting member 13, the first driving member 123 is stretched by force. When a circuit fault of the electronic device causes the temperature to rise and reach the melting point of the connecting member 13, the connecting member 13 melts, so that when the pin 125 is disconnected from the circuit board 11 or the bonding force between the pin 125 and the circuit board 11 is reduced, the pin 125 can move away from the circuit board 11 under the action of the resilience of the first driving member 123, thereby disengaging from the circuit board 11 and disconnecting the electrical connection between the pin 125 and the circuit board 11 to cut off the circuit.

[0085] In another specific embodiment, asFigure 4 and Figure 5 as shown Figure 4 is a schematic structural diagram of the electronic device 1 provided by the present application in another specific embodiment, wherein the pin 125 is in a connected state with the circuit board 11. Figure 5 is a schematic structural diagram of the electronic device 1 provided by the present application in yet another specific embodiment, wherein the pin 125 is in a disconnected state from the circuit board 11. Both ends of the first driving member 123 along the height direction of the safety device 12 can also be respectively connected to the inner bottom wall of the housing 121 and the pin 125. When the pin 125 is fixedly connected to the circuit board 11 through the connecting member 13, the first driving member 123 is compressed by force. As Figure 5 shown, when the circuit of the electronic device fails and the temperature rises and reaches the melting point of the connecting member 13, the connecting member 13 melts, causing the pin 125 to be disconnected from the circuit board 11 or the bonding force between the pin 125 and the circuit board 11 decreases. Under the action of the resilience of the first driving member 123, the pin 125 can move away from the circuit board 11, thereby detaching from the circuit board 11 and disconnecting the electrical connection between the pin 125 and the circuit board 11, and breaking the circuit.

[0086] In the above embodiments, when the pin 125 is fixedly connected to the circuit board 11 through the connecting member 13, the first driving member 123 is in an elastically deformed state. Thus, when the temperature reaches the melting point of the connecting member 13 and the connecting member 13 melts, causing the pin 125 to be disconnected from the circuit board 11, the pin 125 can move away from the circuit board 11 under the action of the resilience of the first driving member 123 to break the circuit. And the first driving member 123 is an elastic member, which can quickly push the pin 125 to move away from the circuit board 11, thereby achieving the effect of quickly cutting off the circuit and improving the reliability of use of the safety device 12.

[0087] Meanwhile, in the above embodiments, as Figure 5 shown, the pin 125 connected to the first driving member 123 may further include a main body 125b and a connecting portion 125c. The main body 125b is connected to the circuit board 11, and the connecting portion 125c is connected to the first driving member 123. Moreover, the cross-sectional area of the connecting portion 125c is larger than that of the main body 125b, which can improve the connection reliability between the first driving member 123 and the connecting portion 125c, thereby enhancing the overall stability when the first driving member 123 drives the pin 125 to move.

[0088] In a specific embodiment, the safety device 12 may further have a pre-locking component (not shown in the figure). During the process of assembling the electronic device, the pre-locking component can limit the first driving member 123 in an elastically deformed state. After the assembly is completed, the pre-locking component can release the restriction on the first driving member 123.

[0089] In this embodiment, during the installation process of the first driving member 123 and the pin 125, the first driving member 123 needs to be in an elastically deformed state. By providing a pre-locking member that can restrict the movement of the first driving member 123, the first driving member 123 can be fixed in the elastically deformed state, avoiding deformation under the action of the resilience force when the first driving member 123 is unrestricted during the installation process.

[0090] Among them, in this embodiment, the pre-locking member can be a limiting and locking mechanism such as a plug type or a threaded disk type.

[0091] In a specific embodiment, such as Figure 6 and Figure 7 shown, Figure 6 is a schematic structural diagram of the electronic device 1 provided by the present application in another specific embodiment, where the pin is in a connected state with the circuit board. Figure 7 is a schematic structural diagram of the electronic device 1 provided by the present application in another specific embodiment, where the pin is in a disconnected state from the circuit board 11. Define the pin connected to the circuit board 11 through the connecting member 13 with a preset melting point as the first pin 125a. It can be understood that in the above Figure 2 , Figure 4 and Figure 6 shown embodiments, both of the two pins 125 are the first pins 125a. In other embodiments, any one of the two pins 125 can also be the first pin 125a.

[0092] Such as [[ID=,46]]Figure 6 and Figure 7 shown, the accommodating cavity of the housing 121 includes a first cavity 124a and a second cavity 124b that are communicated with each other. The second cavity 124b is located on the side of the first cavity 124a facing the circuit board 11, and the bottom wall of the second cavity 124b has a through hole 124c. When the first pin 125a is fixedly connected to the circuit board 11 through the connecting member 13, as Figure 6 shown, one end of the first pin 125a is located in the first cavity 124a, and the other end extends to the outside of the accommodating cavity through the through hole 124c and is fixedly connected to the circuit board 11. When the first pin 125a is disconnected from the circuit board 11, as Figure 7 shown, the first pin 125a can retract into the first cavity 124a.

[0093] When the electronic device described in the embodiment of the present application is applied to a high-power electronic device, since the power of each component of the electronic device is relatively large, the current passing through the electronic device is also relatively large. And when the voltage on both sides is relatively high when the pin of the fuse is separated from the circuit board, an arc-drawing phenomenon is likely to occur where the circuit has been cut off, but the current has not been cut off. To solve this technical problem, such as Figure 7As shown, an arc extinguishing component 126 may also be provided in the second cavity 124b of the fuse device 12. When the first pin 125a moves away from the circuit board 11 under the action of the first driving member 123 and moves into the receiving cavity, the arc extinguishing component 126 can block the through hole 124c, thereby completely cutting off the current, avoiding the occurrence of arcing, and improving the safety of use of the fuse device 12.

[0094] In a specific embodiment, please refer to Figure 8 , Figure 8 which is Figure 7 a partial enlarged view of part I in

[0095] The arc extinguishing component 126 may include an arc extinguishing piece 126a made of an insulating material. The arc extinguishing piece 126a can move within the second cavity 124b or can elastically deform so as to block the through hole 124c when the first pin 125a retracts into the receiving cavity. That is to say, when the first pin 125a retracts into the receiving cavity, the arc extinguishing piece 126a made of an insulating material can block the through hole 124c, thereby separating the first pin 125a and the circuit board by the arc extinguishing piece 126a and avoiding the occurrence of arcing. At the same time, when the first pin 125a moves relative to the receiving cavity, the arc extinguishing piece 126a that can move or elastically deform will not interfere with the first pin 125a, ensuring the normal operation of the fuse device 12.

[0095] In a specific embodiment, the arc extinguishing piece 126a is made of a material that can elastically deform (such as silicone), and can automatically block the through hole 124c by its own elastic deformation when the first pin 125a retracts into the receiving cavity 124, avoiding the occurrence of arcing. While improving the reliability of use of the fuse device 12, it has the advantages of simplified structure and easy implementation.

[0096] In another specific embodiment, as Figure 8 shown, the arc extinguishing component 126 may further include a second driving member 126b connected to the arc extinguishing piece 126a. When the first pin 125a and the circuit board 11 are connected by a connecting member 13, the arc extinguishing piece 126a abuts against the outer peripheral wall of the first pin 125a to compress the second driving member 126b; when the first pin 125a retracts into the receiving cavity, the second driving member 126b can drive the arc extinguishing piece 126a to move to block the through hole 124c, thereby cutting off the current and avoiding the occurrence of arcing. In this embodiment, by providing the arc extinguishing piece 126a and the second driving member 126b, the working reliability of the arc extinguishing component 126 can be improved, thereby improving the use effect of the fuse device 12.

[0097] In a specific embodiment, as Figure 8As shown, the arc extinguishing component may include two arc extinguishing sheets 126a. When the first pin 125a is connected to the circuit board 11 through the connecting member 13, the two arc extinguishing sheets 126a are respectively abutted against the outer peripheral wall of the first pin 125a, and two second driving members 126b connected to the two arc extinguishing sheets 126a are compressed. When the first pin 125a retracts into the accommodating cavity, the two second driving members 126b can respectively drive the two arc extinguishing sheets 126a to move relatively until the two arc extinguishing sheets 126a are abutted against each other to block the through hole 124c.

[0098] Wherein, in this embodiment, the second driving member 126b may be an elastic member. The arc extinguishing sheet 126a may be a mica sheet, and the mica sheet has good insulation and heat conductivity, which can improve the arc extinguishing effect of the arc extinguishing component 126 and further improve the use reliability of the fuse device 12.

[0099] In each of the above embodiments, the two pins 125 are fixedly connected to the circuit board 11 through the connecting member 13 having a preset melting point. In other embodiments, one of the two pins 125 may be connected to the circuit board 11 through the above-mentioned connecting member 13 having a preset melting point.

[0100] Specifically, please continue to refer to Figure 9 and Figure 10 , wherein, Figure 9 is a schematic structural diagram of the electronic device 1 provided by the present application in yet another specific embodiment. Figure 10 is a schematic structural diagram of the electronic device 1 provided by the present application in yet another specific embodiment. One pin in the fuse device 12 is connected to the circuit board 11 through the connecting member 13, that is, any one of the two pins is the first pin 125a, and the other pin is the second pin 125d. As Figure 9 shown, the first pin 125a is fixedly connected to the circuit board 11 through the connecting member 13, and the second pin 125d is soldered to the circuit board 11. Wherein, the connecting member 13 is made of a material with a melting point lower than that of the solder.

[0101] When the circuit of the electronic device fails and the temperature rises to the melting point of the connecting member 13, the connecting member 13 melts to disconnect the connection between the first pin 125a and the circuit board 11 or reduce the bonding force between the first pin 125a and the circuit board 11. The first driving member 123 can drive the first pin 125a to move away from the circuit board 11, thereby disconnecting the circuit. Any one of the two pins is the first pin 125a, and there is no need to provide two first driving members 123, which can simplify the structure of the fuse device 12 and reduce the cost while meeting the requirements of protecting the circuit. At the same time, the melting point of the solder connecting the second pin 125d to the circuit board 11 is relatively high and cannot be melted at this time, so that the second pin 125d and the circuit board 11 remain connected.

[0102] In the above embodiments, as Figure 9 shown, the outer peripheral wall of the first pin 125a can also be welded to the inner peripheral wall of the through hole 124c through the connecting member 13, which can improve the connection reliability between the first pin 125a and the housing 121, and avoid the phenomenon that the first pin 125a loosens and falls off during transportation or installation onto the circuit board 11. And when the temperature rises to the melting point of the connecting member 13, the connecting member 13 melts, so that the outer peripheral wall of the first pin 125a can be disengaged from the inner peripheral wall of the through hole 124c, enabling the first pin 125a to move into the accommodating cavity driven by the first driving member 123, completely cutting off the circuit, and ensuring the normal use of the insurance device 12.

[0103] In a specific embodiment, as Figure 8 and Figure 9 shown, the two pins 125 are connected by a flexible conductor 127. When the first pin 125a moves driven by the first driving member 123, the flexible conductor 127 can deform accordingly to adapt to the first pin 125a at different positions, improving the connection reliability between the two pins.

[0104] The above is only the specific implementation manner of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the embodiments of the present application should be covered by the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, characterized in that, The electronic device includes: A circuit board; A fuse device, the fuse device including a housing, a fuse, and a first driving member, the housing having a receiving cavity, the fuse including two pins, and the first driving member being located in the receiving cavity; Wherein, at least one of the pins is fixedly connected to the circuit board through a connecting member, the connecting member having a preset melting point, and the pin fixedly connected to the circuit board through the connecting member is a first pin, and the first driving member is configured to drive the electrical connection between the first pin and the circuit board to be disconnected when the connecting member melts.

2. The electronic device according to claim 1, characterized in that The pin is soldered to the circuit board through the connecting member.

3. The electronic device according to claim 1, characterized in that, The preset melting point of the connecting member is 150°C - 300°C.

4. The electronic device according to claim 1, characterized in that, The first driving member is an elastic member; along the height direction of the fuse device, two ends of the first driving member are respectively connected to the housing and the first pin.

5. The electronic device according to claim 4, wherein When the first pin is fixedly connected to the circuit board through the connecting member, the first driving member is in an elastically deformed state.

6. The electronic device according to claim 4, characterized in that The fuse device further includes a pre-locking member configured to make the first driving member in an elastically deformed state during the assembly of the electronic device, and the pre-locking member can release the restriction on the first driving member after the assembly of the electronic device is completed.

7. The electronic device according to any one of claims 1-6, characterized in that, The receiving cavity includes a first cavity and a second cavity that are connected and communicated, the second cavity being located on the side of the first cavity facing the circuit board, the bottom wall of the second cavity having a through hole, one end of the first pin being located in the first cavity, and the other end of the first pin extending to the outside of the receiving cavity through the through hole; An arc extinguishing assembly is disposed in the second cavity, and the arc extinguishing assembly is configured to block the through hole when the first pin retracts into the receiving cavity.

8. The electronic device according to claim 7, characterized in that, The arc extinguishing assembly includes an arc extinguishing piece made of an insulating material, and the arc extinguishing piece can move in the second cavity or can elastically deform to block the through hole when the first pin retracts into the receiving cavity.

9. The electronic device according to claim 8, wherein The arc extinguishing piece has an opening, and when the first pin is connected to the circuit board through the connecting member, the first pin passes through the opening, and when the first pin retracts into the receiving cavity, the arc extinguishing piece can elastically deform to block the opening.

10. The electronic device according to claim 8, characterized in that, The arc extinguishing assembly further includes a second driving member connected to the arc extinguishing piece. When the first pin is connected to the circuit board through the connecting member, the arc extinguishing piece abuts against the outer peripheral wall of the first pin to compress the second driving member; when the first pin retracts into the receiving cavity, the second driving member can drive the arc extinguishing piece to move and block the through hole.

11. The electronic device according to claim 7, characterized in that, The outer peripheral wall of the first pin is also soldered to the inner peripheral wall of the through hole through the connecting member.

12. The electronic device according to any one of claims 1-6, characterized in that, The two pins are connected through a flexible conductor.

13. The electronic device according to any one of claims 1-6, characterized in that, The housing includes a first housing and a second housing that are detachably connected, and the first housing and the second housing enclose the receiving cavity.

14. An electronic device, characterized in that, The electronic device includes an electronic component and the electronic device according to any one of claims 1 - 13, and the electronic component is electrically connected to the electronic device.

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