Ultra-miniature SMD leakage current sensor and assembly method thereof
A technology of leakage current sensor and assembly method, which is applied in the direction of only measuring current, measuring current/voltage, and components of electrical measuring instruments, etc., can solve the problems of not getting rid of the overall concept of leakage current sensor, etc., and achieve reduction in size and relative height Effect
Active Publication Date: 2020-06-16
ZHEJIANG JUZI INTELLIGENT TECH
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Problems solved by technology
Although the above technical solutions clearly point out that it can be used for leakage current monitoring or current measurement, it still does not get rid of the general idea of three-dimensionally setting the leakage current sensor
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[0022] The present invention discloses an ultra-small patch type leakage current sensor and an assembly method thereof. The specific implementation of the present invention will be further described below in combination with preferred embodiments.
[0023] see attached figure 1 and figure 2 , figure 1 and figure 2 The specific structure of the ultra-miniature chip leakage current sensor is shown respectively.
[0024] Preferably, the ultra-small patch type leakage current sensor includes:
[0025] The second plate body 30 and the fixed plate 10 with a built-in coil, the fixed plate 10 has a through hole 11, and at least one pad 12 is respectively provided on both sides of the lower surface of the second plate body 30;
[0026] At least one current-carrying wire 20, the first end of the current-carrying wire 20 penetrates the fixed plate 10 and is connected to the pad 12 on one side, the second end of the current-carrying wire 20 is connected to the pad 12 on the other si...
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The invention discloses a subminiature paster type leakage current sensor and a method for assembling the same. The method comprises: S1, an alloy material sheet is punched and cut to form a fixed plate and a second plate body and the middle part of the fixed plate is punched and cut to form a through hole; S2, the fixed plate and second plate body that are obtained at the S1 are punched to form flat surface plate bodies; S3, the inner side of the through hole of the fixed plate is slotted and a coil is embedded into the fixed plate; S4, at least one bonding pad is installed at each of two sides of the lower surface of the second plate body; and S5, a first tail end of a current carrying wire is connected to the bonding pad at one side and a second tail end of the current carrying wire isconnected to the bonding pad at the other side. According to the assembling method of the subminiature paster type leakage current sensor, the size of the leakage current sensor is reduced obviously and the relative height of the leakage current sensor is reduced substantially, so that the adaptation to the chip form is improved.
Description
technical field [0001] The invention belongs to the technical field of leakage current, and in particular relates to an ultra-small patch type leakage current sensor and an assembly method thereof. Background technique [0002] At present, sensors with different current levels are widely used. In the field of leakage current detection technology, traditional leakage current sensors usually adopt a three-dimensional configuration, which has defects such as cumbersome assembly process and large space occupation. For example, the application number is 201420575861.8, and the subject name is a utility model patent for a modular leakage current sensor. figure 1 As can be seen from Figure 5, the technical solution disclosed in this utility model patent: the leakage current sensor (1) is fixedly installed in the middle of the fixed plate (3), and the measured wire (2) passes through the measurement hole of the current sensor. Although the above technical solutions clearly point o...
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IPC IPC(8): G01R31/52G01R19/00G01R1/02
CPCG01R1/02G01R19/0092G01R31/50
Inventor 陈全汪飞周乐明李武华黄达城李正国
Owner ZHEJIANG JUZI INTELLIGENT TECH