Safety structure of electric appliance

Abstract

The utility model discloses a fuse structure of an electric appliance, which comprises an insulating cover and a metal support, the metal support is connected with the insulating cover, the metal support is provided with a contact part and a clamping part, the clamping part is used for clamping a fuse and electrically contacting and conducting with the fuse, and the contact part is used for electrically contacting and conducting with a conductive terminal in the electric appliance; the fixing and conductive functions of the fuse are integrated through the metal support, the design of an insulation frame is omitted, the design difficulty of an insulation cover is reduced, and meanwhile the insulation frame is prevented from occupying the internal volume of electrical equipment. Besides, the clamping portion of the metal support can firmly clamp the fuse, electric contact conduction between the fuse and the metal support is guaranteed, the contact portion can stably and electrically contact with a conductive terminal in an electric appliance, and normal work of the electric appliance is guaranteed. When the fuse needs to be replaced, only the insulation cover needs to be separated from the electrical equipment, the fuse can be conveniently taken out from the clamping part of the metal support, and effective plugging and unplugging of the fuse are achieved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a safety structure for electrical appliances. Background Technology

[0002] In existing electrical devices, especially portable devices such as travel adapters, a fuse is usually required to connect to its internal conductive terminals. Fuses are generally consumables, and to facilitate fuse replacement, a socket is typically provided on the outside of the device for insertion and removal, and then an insulating cover is used to seal the socket.

[0003] However, existing sockets have small diameters, making it difficult to remove fuses. To address this issue, some insulating covers incorporate insulating frames to secure the fuses, allowing them to be pulled out along with the cover when detached from the appliance. However, this approach undoubtedly increases the design complexity of the insulating cover, and the insulating frame occupies internal space within the appliance. For smaller appliances, this design flaw is even more pronounced. Firstly, smaller appliances have limited internal space, and the insulating frame further restricts the placement of other electronic components, hindering integration and miniaturization. Secondly, smaller appliances require higher dimensional precision; the insulating frame on the cover makes controlling the fit between the cover and the appliance's casing and other internal components more difficult, increasing manufacturing complexity, raising the defect rate, and impacting production efficiency and product costs.

[0004] Therefore, there is an urgent need to design a safety structure for electrical devices that ensures the effective insertion and removal of fuses without increasing the design difficulty of the insulation cover, and that the safety structure can be applied to electrical devices of various sizes, including travel converters, to meet the needs of different application scenarios. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fuse structure for electrical appliances, so as to solve the problems of small socket diameter making it difficult to pull out fuses and complex insulation cover design that occupies internal volume in the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a safety structure for an electrical appliance, comprising...

[0007] Insulating cover;

[0008] A metal bracket is connected to the insulating cover. The metal bracket has a contact part and a clamping part. The clamping part is used to clamp the fuse and make electrical contact with the fuse. The contact part is used to make electrical contact with the conductive terminals inside the electrical appliance.

[0009] Furthermore, the metal bracket is a one-piece molded structure.

[0010] Furthermore, the clamping part includes two opposing elastic clamping arms, and a clamping gap is formed between the inner sidewalls of the two elastic clamping arms, with the fuse clamped between the clamping gap.

[0011] Furthermore, the edge of the elastic clamping arm is provided with a guide flange, which is used to guide the fuse into the clamping gap.

[0012] Furthermore, the inner sidewall of the elastic clamping arm is provided with an abutment protrusion, which is used to abut against the fuse.

[0013] Furthermore, the metal bracket is detachably mounted on the insulating cover.

[0014] Furthermore, the insulating cover is provided with a positioning part, and the metal bracket is installed on the positioning part.

[0015] Furthermore, the positioning part is a positioning protrusion.

[0016] Furthermore, the positioning part is a positioning groove.

[0017] Furthermore, the metal bracket is embedded in the insulating cover.

[0018] The beneficial effects of this utility model are as follows: The electrical fuse structure provided by this utility model integrates the fixing and conductive functions of the fuse into one unit by using a metal bracket, eliminating the need for the insulating frame on the insulating cover in the prior art, reducing the design difficulty of the insulating cover, and avoiding the occupation of internal volume of the electrical equipment by the insulating frame. In addition, the clamping part of the metal bracket can firmly clamp the fuse, ensuring electrical contact and conduction between the fuse and the metal bracket, while the contact part can make stable electrical contact with the conductive terminals inside the electrical appliance, ensuring the normal operation of the electrical equipment. When it is necessary to replace the fuse, simply separate the insulating cover from the electrical equipment, and the fuse can be easily removed from the clamping part of the metal bracket, realizing effective insertion and removal of the fuse. Attached Figure Description

[0019] Figure 1 This is an exploded view of the electrical appliance according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the electrical appliance according to Embodiment 1 of this utility model;

[0021] Figure 3 This is an exploded view of the safety structure of Embodiment 1 of this utility model.

[0022] Label Explanation:

[0023] 1. Electrical appliance; 11. Socket; 12. Conductive terminal; 2. Insulating cover; 21. Positioning part; 3. Metal bracket; 31. Contact part; 32. Clamping part; 33. Guide flange; 34. Abutting protrusion; 4. Fuse. Detailed Implementation

[0024] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0025] Please refer to Figures 1 to 3 An electrical safety structure, including

[0026] Insulating cover 2;

[0027] A metal bracket 3 is connected to the insulating cover 2. The metal bracket 3 is provided with a contact part 31 and a clamping part 32. The clamping part 32 is used to clamp the fuse 4 and make electrical contact with the fuse 4. The contact part 31 is used to make electrical contact with the conductive terminal 12 inside the appliance 1.

[0028] As can be seen from the above description, the beneficial effects of this utility model are as follows: By integrating the fixing and conductive functions of the fuse 4 into one unit using a metal bracket 3, the insulating frame on the insulating cover 2 in the prior art is eliminated, reducing the design difficulty of the insulating cover 2, and avoiding the occupancy of the insulating frame on the internal volume of the electrical appliance 1. In addition, the clamping part 32 of the metal bracket 3 can firmly clamp the fuse 4, ensuring electrical contact continuity between the fuse 4 and the metal bracket 3, while the contact part 31 can make stable electrical contact with the conductive terminal 12 inside the electrical appliance 1, ensuring the normal operation of the electrical appliance 1. When it is necessary to replace the fuse 4, simply separate the insulating cover 2 from the electrical appliance 1, and the fuse 4 can be easily removed from the clamping part 32 of the metal bracket 3, realizing the effective insertion and removal of the fuse 4.

[0029] Furthermore, the metal bracket 3 is a one-piece molded structure.

[0030] As described above, the metal bracket 3 adopts an integrally molded structure. This design ensures the overall structural strength of the metal bracket 3, avoids problems such as loosening and poor contact caused by the connection of multiple parts, simplifies the production process, reduces production costs, improves production efficiency, and facilitates a compact layout inside the electrical appliance 1, reducing the space occupied by the complex structure.

[0031] Furthermore, the clamping part 32 includes two opposing elastic clamping arms, and a clamping gap is formed between the inner sidewalls of the two elastic clamping arms, and the fuse 4 is clamped in the clamping gap.

[0032] As described above, the deformation of the elastic clamping arm is used to clamp and release the fuse 4. On the one hand, this makes the installation and removal of the fuse 4 more convenient and quick. On the other hand, the elastic force of the elastic clamping arm ensures a long-term stable electrical contact between the fuse 4 and the metal bracket 3, effectively preventing electrical appliance 1 from malfunctioning due to factors such as vibration or temperature changes causing the fuse 4 to loosen.

[0033] Furthermore, a guide flange 33 is provided at the edge of the elastic clamping arm, and the guide flange 33 is used to guide the fuse 4 into the clamping gap.

[0034] As described above, a guide flange 33 is provided on the edge of the elastic clamping arm. This guide flange 33 can guide the fuse 4 when it is inserted, so that the fuse 4 can enter the clamping gap more smoothly, reducing the difficulty of inserting the fuse 4 and improving the assembly efficiency. It is especially suitable for situations where the fuse 4 is small in size and the installation space is limited in small electrical appliances 1, reducing the risk of damage to the fuse 4 or the metal bracket 3 due to improper operation.

[0035] Furthermore, the inner sidewall of the elastic clamping arm is provided with an abutment protrusion 34, which is used to abut against the fuse 4.

[0036] As described above, the contact protrusion 34 on the inner wall of the elastic clamping arm can increase the contact area with the fuse 4, and through the contact between the protrusion and the surface of the fuse 4, the clamping firmness is further improved, the reliability of electrical contact is enhanced, and at the same time, it can play a buffering role to a certain extent, reducing the impact of the vibration of the electrical appliance 1 on the fuse 4 during operation, and extending the service life of the fuse 4.

[0037] Furthermore, the metal bracket 3 is detachably installed on the insulating cover 2.

[0038] As described above, the metal bracket 3 is detachably installed on the insulating cover 2. This detachable design facilitates quick disassembly and assembly when the metal bracket 3 or fuse 4 needs to be replaced, improving the convenience of repair and maintenance of electrical appliance 1 and reducing maintenance costs. At the same time, it also allows the metal bracket 3 to be flexibly replaced according to different specifications of electrical appliance 1 or usage requirements, enhancing the versatility and adaptability of the fuse structure.

[0039] Furthermore, the insulating cover 2 is provided with a positioning part 21, and the metal bracket 3 is installed on the positioning part 21.

[0040] As described above, the positioning part 21 on the insulating cover 2 for mounting the metal bracket 3 ensures the accurate mounting position of the metal bracket 3 on the insulating cover 2, improves assembly accuracy, and prevents the metal bracket 3 from shifting position during use. This ensures reliable electrical connection between the contact part 31 of the metal bracket 3 and the internal conductive terminal 12 of the electrical appliance 1, as well as stable clamping of the fuse 4 by the clamping part 32, thereby enhancing the reliability and stability of the entire fuse structure.

[0041] Furthermore, the positioning part 21 is a positioning protrusion.

[0042] As described above, the positioning protrusion has a simple structure and is easy to manufacture. It can fit tightly with the corresponding mounting part on the metal bracket 3 to achieve rapid positioning and installation. At the same time, it can enhance the connection strength between the metal bracket 3 and the insulating cover 2 to a certain extent, prevent the metal bracket 3 from loosening during use, and improve the quality and safety of the product.

[0043] Furthermore, the positioning part 21 is a positioning groove.

[0044] As described above, the design of the positioning groove can be flexibly adjusted according to the shape and size of the metal bracket 3, which can provide a more stable positioning effect, making the metal bracket 3 less prone to shaking after installation, ensuring the stability of the electrical connection, and the shape and size of the positioning groove can, to a certain extent, restrict the movement direction of the metal bracket 3, further improving the installation reliability of the metal bracket 3.

[0045] Furthermore, the metal bracket 3 is embedded in the insulating cover 2.

[0046] As described above, the metal bracket 3 is embedded in the insulating cover 2. This embedding method allows the metal bracket 3 and the insulating cover 2 to be tightly integrated, which improves the compactness and robustness of the overall structure, enhances the mechanical strength and impact resistance of the safety structure, and also helps to prevent external dust, moisture and other foreign objects from entering the gap between the metal bracket 3 and the insulating cover 2, affecting the electrical connection and clamping effect, and extending the service life of the electrical appliance 1.

[0047] Please refer to Figures 1 to 3Embodiment 1 of this utility model is as follows: a fuse structure for an electrical appliance, including an insulating cover 2 and a metal bracket 3. The insulating cover 2 is used to enclose a socket 11 on the housing of an electrical appliance 1. The socket 11 is used to insert a fuse 4. The housing of the electrical appliance 1 is provided with a conductive terminal 12. The metal bracket 3 is connected to the insulating cover 2. The metal bracket 3 is provided with a contact portion 31 and a clamping portion 32. The clamping portion 32 is used to clamp the fuse 4 and make electrical contact with the fuse 4. The contact portion 31 is used to make electrical contact with the conductive terminal 12 inside the electrical appliance 1. In actual use, by inserting the fuse 4 into the clamping portion 32 of the metal bracket 3, the clamping portion 32 of the metal bracket 3 fixes the fuse 43 and ensures the stability of the electrical connection between the fuse 4 and the metal bracket 3. Then, the insulating cover 2 is installed and fixed to the housing of the electrical appliance 1, and the contact portion 31 of the metal bracket 3 makes close contact with the conductive terminal 12 inside the electrical appliance 1 to achieve electrical conduction.

[0048] Alternatively, the electrical appliance 1 may be a portable electrical appliance 1 (such as a travel adapter, portable charger 1, portable Bluetooth speaker, portable computer, etc.), a household appliance 1 (such as a table lamp, hair dryer, electric iron, etc.), an industrial electrical appliance 1 (such as an industrial control module, industrial lighting system, etc.), a vehicle electrical appliance 1 (such as a vehicle charger 1, vehicle inverter, etc.), or a medical device (such as a portable medical testing instrument).

[0049] Specifically, in this embodiment, the fuse structure is applied to a travel converter. Since travel converters are often used to convert voltage and current between different regions, fuse 4 is needed to protect the circuit from overload and short circuit. This fuse structure can be easily installed on the travel converter, enabling the travel converter to ensure safety and reliability in different usage scenarios.

[0050] In some other embodiments, the fuse structure can also be applied to the portable charger 1: the portable charger 1 needs to provide a stable current output, and the fuse 4 can prevent the charger 1 from being damaged due to excessive current during charging. By using this fuse structure, it is easy to replace the fuse 4, ensuring the long-term stable use of the charger 1.

[0051] In other embodiments, the fuse structure can also be applied to portable Bluetooth speakers: when used outdoors or while traveling, it is necessary to ensure that the normal operation of the audio equipment is not affected by circuit failures. This fuse structure can be applied to portable Bluetooth speakers to provide reliable circuit protection for the device, while also allowing users to easily replace the fuse 4 themselves.

[0052] In other embodiments, the fuse structure can also be applied to portable computers: the internal circuitry of a computer is complex and expensive, requiring fuse 4 to protect the circuitry from damage caused by overloads and short circuits. Applying this fuse structure to a portable computer ensures safe operation under various usage environments and also makes it easy for the user to replace fuse 4 themselves.

[0053] In some other embodiments, the fuse structure can also be applied to a table lamp: a common household appliance 1, which typically uses a fuse 4 to protect the circuit from overload and short circuit. This fuse structure can be easily installed in the power socket or internal circuit of the table lamp, making the lamp safer and more reliable during use, and also allowing the user to easily replace the fuse 4.

[0054] In some other embodiments, the fuse structure can also be applied to hair dryers: hair dryers require a large amount of current to drive the motor and heating element during operation, and are easily damaged due to excessive current. By using this fuse structure, the circuit of the hair dryer can be effectively protected, preventing safety accidents caused by current overload, while also making it convenient for users to replace fuse 4.

[0055] In other embodiments, the safety structure can also be applied to electric irons: electric irons consume a large current during heating, making the circuit prone to overload or short circuit. This safety structure is suitable for electric irons, ensuring their safety and reliability during use, and also making it easy for users to replace the fuse 4 themselves.

[0056] In other embodiments, the fuse structure can also be applied to industrial control modules: in industrial production, various control modules need to precisely control current and voltage to ensure the normal operation of production equipment. This fuse structure can be applied to industrial control modules to provide reliable circuit protection while facilitating technicians in repairing and replacing fuse 4.

[0057] In other embodiments, the fuse structure can also be applied to factory lighting systems: factory lighting systems typically require a large amount of electricity to drive numerous lamps, making them prone to overload or short circuits. By using this fuse structure, the lighting system's circuitry can be effectively protected, ensuring worker safety and production continuity, while also facilitating maintenance personnel in repairing and replacing fuses.

[0058] In some other embodiments, the fuse structure can also be applied to the vehicle charger 1: the vehicle charger 1 is used to charge various electronic devices in a vehicle and requires a fuse 4 to protect the circuit from overload and short circuit. This fuse structure can be easily installed on the vehicle charger 1, ensuring the normal use of the charger 1 and the safety of the equipment during vehicle operation, while also facilitating user replacement of the fuse 4.

[0059] In some other embodiments, the fuse structure can also be applied to an on-board inverter: the on-board inverter converts the DC power from the car battery into AC power to provide power to various electrical devices. Because on-board inverters need to handle large currents, they are prone to circuit failures. By using this fuse structure, the circuitry of the on-board inverter can be effectively protected, preventing safety accidents caused by current overload, and it also facilitates user replacement of the fuse.

[0060] In other embodiments, the fuse structure can also be applied to portable medical testing devices: In the medical field, portable medical testing devices such as blood glucose meters and electrocardiographs require precise circuit protection to ensure the normal operation of the device and the accuracy of the test results. This fuse structure can be applied to portable medical testing devices, providing reliable circuit protection while allowing medical personnel to easily replace fuse 4 in emergencies, ensuring the normal use of the device.

[0061] Preferably, the metal bracket 3 is a one-piece molded structure (e.g., Figure 3As shown in the diagram, this design ensures the overall structural strength of the metal bracket 3, avoiding problems such as loosening and poor contact caused by the connection of multiple components. It also simplifies the manufacturing process, reduces production costs, improves production efficiency, and facilitates a compact layout within the electrical appliance 1, reducing space occupation caused by structural complexity. Specifically, the clamping part 32 includes two opposing elastic clamping arms, forming a clamping gap between the inner sidewalls of the two elastic clamping arms. The fuse 4 is clamped within this gap, and the deformation of the elastic clamping arms is used to clamp and release the fuse 4. This makes the installation and removal of the fuse 4 more convenient and quick, and the elastic force of the clamping arms ensures a long-term stable electrical contact between the fuse 4 and the metal bracket 3, effectively preventing electrical appliance 1 malfunctions caused by the fuse 4 loosening due to vibration or temperature changes. More specifically, a guide flange 33 is provided at the edge of the elastic clamping arm, which is used to guide... The fuse 4 is clamped into the clamping gap. A guide flange 33 is provided on the edge of the elastic clamping arm. This guide flange 33 can guide the fuse 4 when it is inserted, allowing the fuse 4 to enter the clamping gap more smoothly. This reduces the difficulty of inserting the fuse 4 and improves assembly efficiency. It is especially suitable for small electrical appliances 1 where the fuse 4 is small in size and the installation space is limited. It also reduces the risk of damage to the fuse 4 or the metal bracket 3 due to improper operation. In detail, the inner sidewall of the elastic clamping arm is provided with an abutment protrusion 34. The abutment protrusion 34 is used to abut against the fuse 4. The abutment protrusion 34 on the inner sidewall of the elastic clamping arm can increase the contact area with the fuse 4. Furthermore, the abutment between the protrusion and the surface of the fuse 4 further improves the clamping firmness and enhances the reliability of electrical contact. At the same time, it can also play a buffering role to a certain extent, reducing the impact of vibration on the fuse 4 during the operation of the electrical appliance 1 and extending the service life of the fuse 4.

[0062] Optionally, the metal bracket 3 can be detachably installed on the insulating cover 2. The detachable connection methods include, but are not limited to, screw connections, bolt connections, and snap-fit ​​connections. This detachable design facilitates quick disassembly and assembly when the metal bracket 3 or fuse 4 needs to be replaced, improving the convenience of appliance 1 repair and maintenance, reducing repair costs, and also allowing the metal bracket 3 to be flexibly replaced according to different appliance 1 specifications or usage requirements, enhancing the versatility and adaptability of the fuse structure. Preferably, the insulating cover 2 is provided with a positioning part 21, and the metal bracket 3 is installed on the positioning part 21. The positioning part 21 on the insulating cover 2 for installing the metal bracket 3 ensures the accurate installation position of the metal bracket 3 on the insulating cover 2, improves assembly accuracy, and prevents the metal bracket 3 from shifting position during use. This ensures reliable electrical connection between the contact part 31 of the metal bracket 3 and the internal conductive terminal 12 of the appliance 1, as well as stable clamping of the fuse 4 by the clamping part 32, enhancing the reliability and stability of the entire fuse structure. Further optionally, the positioning part 21 can be a positioning protrusion. Positioning protrusions have a simple structure, are easy to manufacture, and can be used with the metal bracket... The corresponding mounting parts on the frame 3 fit tightly together, enabling rapid positioning and installation. At the same time, it can enhance the connection strength between the metal bracket 3 and the insulating cover 2 to a certain extent, preventing the metal bracket 3 from loosening during use and improving the quality and safety of the product. Alternatively, the positioning part 21 can also be a positioning groove. The design of the positioning groove can be flexibly adjusted according to the shape and size of the metal bracket 3, providing a more stable positioning effect. This makes the metal bracket 3 less prone to shaking after installation, ensuring the stability of the electrical connection. Furthermore, the shape and size of the positioning groove can, to a certain extent, limit the direction of movement of the metal bracket 3, further improving the installation reliability of the metal bracket 3.

[0063] In addition, the insulating cover 2 can be formed on the metal bracket 3 by injection molding, so that the metal bracket 3 is embedded in the insulating cover 2. This embedding method makes the metal bracket 3 and the insulating cover 2 tightly connected, which improves the compactness and firmness of the overall structure, enhances the mechanical strength and impact resistance of the safety structure, and also helps to prevent foreign objects such as dust and moisture from entering the gap between the metal bracket 3 and the insulating cover 2, affecting the electrical connection and clamping effect, and extending the service life of the electrical appliance.

[0064] In summary, the electrical fuse structure provided by this utility model integrates the fuse's fixing and conductive functions into a single unit using a metal bracket. This eliminates the need for the insulating frame on the insulating cover in existing technologies, reducing the design complexity of the insulating cover and avoiding the space occupied by the insulating frame within the electrical device. Furthermore, the clamping part of the metal bracket firmly holds the fuse, ensuring electrical contact between the fuse and the metal bracket, while the contact part provides stable electrical contact with the conductive terminals inside the electrical device, ensuring its normal operation. When the fuse needs to be replaced, simply separating the insulating cover from the electrical device allows for easy removal of the fuse from the clamping part of the metal bracket, achieving efficient fuse insertion and removal.

[0065] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fuse structure for an electrical appliance, characterized in that, include Insulating cover; A metal bracket is connected to the insulating cover. The metal bracket has a contact part and a clamping part. The clamping part is used to clamp the fuse and make electrical contact with the fuse. The contact part is used to make electrical contact with the conductive terminals inside the electrical appliance.

2. The electrical safety structure according to claim 1, characterized in that, The metal bracket is a one-piece molded structure.

3. The electrical safety structure according to claim 1, characterized in that, The clamping part includes two opposing elastic clamping arms, and a clamping gap is formed between the inner sidewalls of the two elastic clamping arms, and the fuse is clamped in the clamping gap.

4. The electrical safety structure according to claim 3, characterized in that, The edge of the elastic clamping arm is provided with a guide flange, which is used to guide the fuse into the clamping gap.

5. The electrical safety structure according to claim 3, characterized in that, The inner wall of the elastic clamp arm is provided with an abutment protrusion, which is used to abut against the fuse.

6. The electrical safety structure according to claim 1, characterized in that, The metal bracket is detachably installed on the insulating cover.

7. The electrical safety structure according to claim 1 or 6, characterized in that, The insulating cover is provided with a positioning part, and the metal bracket is installed on the positioning part.

8. The electrical safety structure according to claim 7, characterized in that, The positioning part is a positioning protrusion.

9. The electrical safety structure according to claim 7, characterized in that, The positioning part is a positioning groove.

10. The electrical safety structure according to claim 1, characterized in that, The metal bracket is embedded in the insulating cover.

Images