Magnetic induction assembly and manufacturing method thereof

Abstract

The invention discloses a magnetic induction assembly and a manufacturing method thereof. The manufacturing method of the magnetic induction assembly comprises the following steps: arranging a conductive pattern on a printed circuit board to manufacture a first group of coils and establish a first adaptive hole; manufacturing at least one second group of coils by using a conductive material and establishing a second adaptive hole; coating the surface of the first group of coils without the first adaptive holes with a first isolation layer made of an insulating material, and establishing a positioning mechanism to provide alignment of the first adaptive holes and the second adaptive holes; an iron core with a magnetic conductive column is manufactured, and the magnetic conductive column isinserted into the first adaptive hole and the second adaptive hole, so that the iron core is coupled with the first group of coils and the second group of coils; therefore, the production process of the transformer can be easily introduced into automation, so that the efficiency can be improved, and the reject ratio of products can be reduced.

Description

technical field [0001] The invention relates to a transformer, in particular to a magnetic induction component of the transformer and a manufacturing method thereof. The magnetic induction component can be applied and connected to a power supply and a circuit terminal to provide voltage conversion. Background technique [0002] The main structure of the transformer includes two sets of independent coils (coils), the so-called primary coils and secondary coils, and a common core (core) for magnetic conduction. The coil ratio converts the voltage value. In addition, in practical applications, the transformer is usually built on an independent insulating base (base), which is pre-arranged with several conductive pins (pins) connected to the coil to form a transformer assembly, and through these conductive The pin is welded to the external circuit, so that the transformer assembly is connected to the external circuit, and at the same time, the base is used as isolation to preve...

AI Technical Summary

Problems solved by technology

[0005] 1. It should be noted that using PCB manufacturing technology to print conductive coil patterns to produce primary and secondary coils including transformers is complicated, and the cost burden is high. It is difficult for the manufactured products to have a price competitive advantage in the market.

[0006] 2. Coating insulating varnish on the surface of the two sets of coils to isolate each other is difficult to meet the safety requirements of transformer manufacturing, and it is easy to cause damage to the transformer during operation; especially for AC-DC transformers used to connect to the mains, due to The voltage difference at the AC power supply terminal is large, and the isolation between the primary coil and the secondary coil must have a certain safety distance in terms of specifications.

[0007] 3. For the transformer disclosed in the previous technology 1, when a set of primary coils and two sets of secondary coils are assembled with the iron core, the central magnetic guide column of the iron core must pass through the assembly holes reserved on each set of coils, so these coils are assembled The alignment of the holes must be very precise, otherwise it will cause difficulties in assembly; especially the three sets of coils are independent units and components, which must be threaded on the iron core separately during the manufacturing process. The process is not only complicated and wastes manpower, but also The required precision is high, otherwise it will easily lead to an increase in the failure rate of assembly, or cause the problem that the gap between the coil and the core is too large

In particular, the two sets of secondary coils made of PCB have to accurately connect the coil patterns of each other through the conductive pins (pins) shown on the left to provide connection with external circuits. major factor in mass production

[0008] 4. In the transformer disclosed in the previous technology 1, there is no mechanism design for safety isolation between the conductive needle and the iron core of the transformer, and there is also a lack of safety distance isolation planning between the iron core and the external circuit

[0011] 1. There is no isolation design with a safe distance between the flat coils. As mentioned above, even if a layer of insulating varnish is applied on the surface of each coil as isolation, it is difficult to meet the safety requirements of the transformer, especially for connecting to the mains Due to the large voltage difference at the AC power supply end, it is easy to cause damage to the transformer during operation.

[0012] 2. Each coil is an independent unit and component. When assembling with the iron core, the central magnetic guide column of the iron core must pass through the assembly holes reserved on each set of coils in sequence, so the alignment of these coil assembly holes must be It is very precise, which not only increases the difficulty of assembly, but is also prone to failure, and wastes man-hours, and it is impossible to introduce automated processes, which is not conducive to a large number of production operations

[0013] 3. Prior art 2 also lacks safety isolation planning between the conductive pins and the iron core; in addition, the conductive pins are pre-fixed on an independent base (base), which not only adds one more process in the manufacturing process, but also Also because there is one more component for transformer assembly, it will increase the unnecessary burden on the manufacturer in the management of materials.

Images