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Overcurrent protective device and manufacture method thereof

A technology for protection devices and manufacturing methods, which is applied in the direction of emergency protection devices, fuse manufacturing, circuits, etc., and can solve problems such as burning, dissipation, and high-temperature fusing

Active Publication Date: 2009-09-09
JIANGMEN JUNEWAY ELECTRONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in reality, when the fuse body 11 is energized to generate a heat source, this part of the heat source will be covered by the fuse due to the contact between the fuse body 11 and the fuse covering body 12. Body 12 conducts heat and dissipates, so that when the set excess current passes through the fuse body 11, the fuse body 11 cannot reach a specific current or a specific temperature and will be blown at a high temperature, thereby failing to achieve the circuit protection effect of blocking the excess current, and making the electrical device Damaged or burnt electronic circuits

Method used

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  • Overcurrent protective device and manufacture method thereof
  • Overcurrent protective device and manufacture method thereof
  • Overcurrent protective device and manufacture method thereof

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Embodiment Construction

[0031] The features of the present invention can be clearly understood by referring to the drawings and the detailed description of the embodiments.

[0032] The overcurrent protection device and its manufacturing method of the present invention, wherein, the overcurrent protection device 2, such as figure 2 As shown, a fuse structure unit 22 is mainly arranged in a covering body 21, and the fuse structure unit 22 is a copper wire or a copper alloy wire with a length of 10 mm and a diameter of 0.13 mm, and is sequentially plated with silver with a thickness of 10 μm. layer and a tin layer with a thickness of 6 μm, and the first and second electrodes 23 and 24 are formed at both ends of the fuse structure unit 22 and extending outside the covering body 21, wherein the fuse structure unit 22 and the covering body 21 There is at least one space 25 therebetween, and the space 25 can be further filled with gas 251 , such as nitrogen, helium and other inert gases.

[0033] The cov...

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Abstract

The invention relates to an overcurrent protective device. The inside of a cladding body is provided with a fuse wire framework unit, and two ends of the fuse wire framework unit parallelly extend to the outside of the cladding body to form a first electrode and a second electrode. In the manufacturing process, through a gas assist injection molding step, at least one gas accommodating space is formed between the fuse wire framework unit and the cladding body, so that heat source generated by the fuse wire framework unit supplied with power cannot dissipate by heat conduction of the cladding body to ensure that the fuse wire framework unit is fused at a high temperature when a specific temperature or current is reached. Therefore, the device achieves the effect of protecting circuits really.

Description

technical field [0001] The present invention provides an over-current protection device and its manufacturing method, especially an over-current protection device that can ensure that the over-current protection device reaches a specific current or a specific temperature and causes high temperature fusing to block the protective effect of excess current. and manufacturing method and device thereof. Background technique [0002] Fuses are used to protect circuits or electrical facilities in the circuit, preventing them from being damaged by instantaneous excess current or high voltage and causing damage to precision electronic equipment. Therefore, fuses are indispensable electronic components. A traditional fuse device has a coil or fuse material, and the fuse material is sealed in a tube made of hard glass, ceramic material or other insulator material. Inert gas or arc-resistant filling is filled in the insulating tube. The two ends of the pipe body are conductors respec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/04H01H85/47H01H85/38H01H69/02
Inventor 颜琼章
Owner JIANGMEN JUNEWAY ELECTRONIC TECH CO LTD
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