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Lead fixing structure of noise filter

A technology of noise filter and fixed structure, which is applied in the direction of electrical equipment construction parts, impedance network, electrical components, etc., can solve problems such as short circuit, achieve the effect of preventing short circuit, eliminating different melting points, and convenient fixing operation

Inactive Publication Date: 2009-06-17
DPC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that both the housing 110 and the lead wire 150 of the noise filter are metals, and because they are dissimilar materials with different melting points, there are many cases of poor welding that short-circuits the connection parts, and since the housing 110 is approximately a cylinder shape, which is more fragile than welding on a flat surface, and is prone to short circuit due to impact during use

Method used

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  • Lead fixing structure of noise filter
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  • Lead fixing structure of noise filter

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0016] Such as figure 1 and image 3 As shown, the noise filter according to the first embodiment of the present invention consists of a cylindrical casing 110, a circuit unit 120 housed in the casing, a terminal board 130 for fixing terminals 140 drawn from the circuit unit, and a circuit unit The lead wire 150 drawn out constitutes.

[0017] The housing 110 is a circuit unit 120 with a built-in noise filter and placed at the terminal board 130 , with an open top and a closed bottom that is roughly cylindrical. The upper outer surface is formed with a lead wire fixing portion 160a.

[0018] The lead wire fixing portion 160a is a part of the material of the housing 110 that protrudes semicircularly from the inside to the outside by punching and is open up and down.

[0019] The circuit unit 120 is a unit in which many electronic parts are assembled, and it is formed with a terminal 140 leading out circuit characteristics; and a lead wire 150 drawn out and grounded to the ca...

no. 2 Embodiment approach

[0026] Figure 4 According to the second embodiment of the present invention, of the two side surfaces of the lead wire fixing portion 160b, only one side is integrally formed with the case 110, and the other side is opened to be separated from the case 110 by a predetermined distance. That is, one of the vertical direction and the left and right side surfaces of the lead wire fixing portion 160b is opened. In the state opened in three directions like this, when the lead wire 150 is clamped in the lead wire fixing part 160b, the lead wire 150 can be clamped not only in the up and down direction but also from the side, so the lead wire 150 and the lead wire fixing part 160b can be easily grounded. . In this way, the lead wire 150 is fixed to the lead wire fixing portion 160b by welding in the same manner as in the first embodiment while the lead wire 150 is grounded to the lead wire fixing portion 160b.

no. 3 Embodiment approach

[0028] Figure 5 In the third embodiment of the present invention, the lead wire fixing portion 160b of the second embodiment, that is, the end portion of the open side of the lead wire fixing portion 160b is bent into a U shape for convenience when clamping the lead wire 150 . In this way, when the end of the lead wire fixing part 160c is bent and clamped from the side while holding the end of the lead wire 150, even if it is hung on the end of the lead wire fixing part 160c, it is still possible to slide and insert the wire of the lead wire fixing part along the bent part easily. internal.

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PUM

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Abstract

The object of the present invention is to provide a lead fixing structure of noise filter, which is that by fixing hard the down-lead that leads out from a circuit unit without bad welding, thus it will not be short even if it comes in for impact. The structure includes: a circuit unit, which is composed of electric elements, attenuates or removes the electromagnetism noise, and leads out the terminals and down-leads; a cylinder casing which houses the said circuit unit; a terminal board, which is provided on the upperside of the said casing, fixes the terminals leading out from the said circuit unit, and the down-leads are made to traverse; and a down-lead fixation portion, which protrudes as a hemicycle and opens wide up-and-down, to process welding after inserting the said down-leads.

Description

technical field [0001] The present invention relates to a noise filter, and more particularly to a lead wire fixing structure of the noise filter. This structure can prevent the short circuit caused by the impact or the like on the welded part when the lead wire of the noise filter is fixed on the case by welding. Background technique [0002] Generally, noise filters are provided to attenuate or remove electronic noise generated in electronic equipment. Such as figure 1 As shown, in order to exert the filter function, the circuit unit 120 after assembly of electronic components such as PCB is installed in the cylindrical casing 110 . [0003] In addition, the terminals drawn from the circuit unit 120 are fixed on the terminal board 130 covering the upper end of the casing 110, and as figure 2 As shown, the lead wire 150 leading out the filter characteristic is connected to the outer surface of the casing 110 by welding and grounding through the terminal board 130, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H1/00H03H7/01H03H11/04H05K7/00
CPCH01R4/027
Inventor 吴正春金泰珉
Owner DPC CO LTD
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