TWM677704U - Magnetic assembly and transformer - Google Patents

Abstract

A magnetic assembly includes a sleeve, an annular copper sheet and a winding coil. The sleeve includes a sleeve body extending along an extending direction. The sleeve body has a first end surface and a second end surface opposite to each other and a guiding groove. The guiding groove extends from at least one of the first end surface and the second end surface along the extending direction. The annular copper sheet includes a cooper body, a protruding part and a connecting part. The protruding part protrudes from an inner periphery of the cooper body along an axial direction and is disposed in the guiding groove. The connecting part protrudes from an outer periphery of the cooper body. The winding coil is disposed on the sleeve body and located between two of the annular cooper sheets. A transformer is also provided.

Description

Magnetic components and transformers

This invention relates to a magnetic component and a transformer, and more particularly to a magnetic component capable of positioning a copper sheet and a transformer having the magnetic component.

Generally, in the assembly process of magnetic components currently on the market, the electroplated copper sheet must be fixed by additional fasteners to position the connecting part of the electroplated copper sheet in a predetermined position. However, this positioning method increases costs and affects assembly efficiency. Therefore, how to improve the assembly efficiency of magnetic components while reducing costs is a problem that this field is dedicated to exploring.

This invention provides a magnetic component that improves assembly efficiency and reduces costs.

This invention provides a transformer that includes the aforementioned magnetic components.

The novel magnetic component includes a sleeve, annular copper sheets, and a coil winding assembly. The sleeve includes a sleeve body extending along an extending direction, having opposing first and second end faces and a guide groove, the guide groove extending in the extending direction from at least one of the first and second end faces. The annular copper sheet includes a copper sheet body, a protrusion, and a connecting portion. The protrusion protrudes axially from the inner circumference of the copper sheet body and is disposed in the guide groove, while the connecting portion protrudes outward from the outer side of the copper sheet body. The coil winding assembly is disposed within the sleeve body and located between the two annular copper sheets.

The transformer of this invention includes a housing, the aforementioned magnetic components, and a magnetic core. The magnetic core is disposed in the housing and includes a central column and side columns, with a sleeve fitted onto the central column.

In one embodiment of this invention, the connecting portion has a through hole.

In one embodiment of this invention, the guide channel has a first guide channel segment and a second guide channel segment. The first guide channel segment extends from a first end face along an extending direction, and the second guide channel segment extends from a second end face along an extending direction. The first guide channel segment and the second guide channel segment are not connected.

In one embodiment of this novel invention, the first guide channel segment and the second guide channel segment extend along the same straight line.

In one embodiment of this invention, the length of the first guide channel segment is different from the length of the second guide channel segment.

In one embodiment of this invention, the aforementioned guide channel extends from the first end face along the extension direction to the second end face.

In one embodiment of this invention, at least one of the first guide groove section and the second guide groove section is provided with a slot at its tail end, and the slot extends in the circumferential direction.

In one embodiment of this invention, the slot includes a protrusion that protrudes from the bottom surface of the slot.

In one embodiment of this invention, the aforementioned slot further includes a guide ramp located between the protrusion and the first guide groove section or the second guide groove section.

In one embodiment of this invention, the guide channel has a longitudinal guide channel section and a transverse guide channel section. The longitudinal guide channel section extends along an extension direction from at least one of a first end face and a second end face, and the transverse guide channel section extends circumferentially from both sides of the longitudinal guide channel section.

In one embodiment of the present invention, the sleeve further includes a stop portion that protrudes outward from the first end face and the second end face along the extending direction of the sleeve body.

Based on the above, the magnetic component of the transformer of this invention includes a sleeve, an annular copper sheet, and a coil winding. The annular copper sheet has a protrusion extending from the inner circumference of the copper sheet body, and the protrusion is disposed in the guide groove of the sleeve. Accordingly, the magnetic component of the transformer of this invention can position the connecting part of the annular copper sheet without the use of additional fasteners, thereby improving assembly efficiency and reducing costs.

Figure 1 is a schematic diagram of a transformer according to an embodiment of the present invention. Referring to Figure 1, the transformer 10 of this embodiment includes a housing 20, a magnetic core 30, and a magnetic component 100. The magnetic core 30 is disposed in the housing 20. The magnetic component 100 is disposed in the magnetic core 30.

The structure of the magnetic component 100 of this embodiment is described in detail below.

Figure 2 is an exploded view of the magnetic core and magnetic components of Figure 1. Figure 3 is a front view of the magnetic core and magnetic components of Figure 1. To clearly illustrate the structure of the magnetic component 100, the magnetic core 30 in Figure 3 is shown in perspective. Referring to Figures 2 and 3, the magnetic component 100 includes a sleeve 110, an annular copper sheet 120, and a coil winding 130. The sleeve 110 includes a sleeve body 111 extending along the extension direction D1. The sleeve body 111 has opposing first end faces 1111 and second end faces 1112. The sleeve body 111 also has a guide groove 1113 extending from the first end face 1111 and/or the second end face 1112 in the extension direction D1. The annular copper sheet 120 includes a copper sheet body 121, a protrusion 122, and a connecting portion 123. The protrusion 122 protrudes from the inner circumferential direction D2 of the copper sheet body 121 and is disposed in the guide groove 1113. The connecting part 123 protrudes outward from the outer side of the copper sheet body 121 to allow the magnetic component 100 to connect with surrounding electronic components (e.g., plug-in, soldering, etc.). The coil winding 130 is disposed in the sleeve body 111 and located between the two annular copper sheets 120.

It is worth mentioning that, since the annular copper sheet 120 has a protrusion 122 extending from the inner circumference of the copper sheet body 121, the annular copper sheet 120 can be fixed at a specific position on the sleeve 110, such as the tail end of the guide groove 1113, by providing the protrusion 122 in the guide groove 1113 of the sleeve 110. Accordingly, this invention can fix the annular copper sheet 120 at a specific position on the sleeve 110 without the use of additional fasteners, thereby improving the assembly efficiency of the magnetic component 100 and reducing costs. Meanwhile, through different guide channel 1113 designs and the installation direction of the annular copper sheet 120, the connection portion 123 of the annular copper sheet 120 can be positioned in different directions, thereby providing more options for connection positions of electronic components around the magnetic component 100 and improving the space utilization possibilities within the device.

Referring to Figures 1 and 2, in this embodiment, the magnetic core 30 includes a central post 31 and side posts 32, and a sleeve 110 is fitted onto the central post 31. Preferably, the sleeve 110 further includes a stop portion 112, which protrudes outward from the first end face 1111 and the second end face 1112 along the extending direction D1 from the sleeve body 111. The two stop portions 112 are adapted to be disposed in the two grooves 33 of the magnetic core 30 to securely fix the sleeve 110 to the magnetic core 30.

In this embodiment, eight annular copper sheets 120 are arranged in pairs on the sleeve body 111 for illustration. As shown in Figure 2, the annular copper sheets 120 in each group can be configured such that the connecting portions 123 face upwards and downwards respectively, so that each group can be connected to surrounding electronic components in both directions. In other embodiments, depending on different connection position requirements, the connecting portions 123 of the annular copper sheets 120 can all face upwards or all face downwards, or, some groups of annular copper sheets 120 may have their connecting portions 123 facing upwards, while the connecting portions 123 of the remaining groups of annular copper sheets 120 may all face downwards. This invention does not limit the number or orientation of the annular copper sheets 120 and the connecting portions 123.

In this embodiment, the number of protrusions 122 of the annular copper sheet 120 is two, and the number of guide channels 1113 is four (as shown in Figure 3). The two protrusions 122 are arranged approximately 180 degrees apart along the inner circumference of the copper sheet body 121, and the guide channels 1113 are symmetrically arranged with the axis of the circumference of the sleeve body 111 as the center. This invention does not limit the number of protrusions 122 and guide channels 1113; at least one protrusion 122 and one guide channel 1113 are sufficient to achieve the purpose of this invention.

In this embodiment, the shape of the protrusion 122 and the cross-sectional shape of the guide channel 1113 are schematically triangular. In other embodiments, the shape of the protrusion 122 and the cross-sectional shape of the guide channel 1113 may also be the same, for example, square or semi-circular, or they may each have different shapes. This invention does not limit the shape of the two or whether the two shapes match, as long as the guide channel 1113 can allow the protrusion 122 to pass through.

Referring to Figure 3, preferably, the connector 123 of this embodiment has a through hole 1231. When soldering, the through hole 1231 can increase the adhesion of the solder and prevent the connector 123 from having a dry solder joint when soldering with other electronic components.

The specific structure of the guide channel 1113 in this embodiment is described in detail below.

Referring to Figures 2 and 3, each of the four guide channels 1113 in this embodiment has a first guide channel segment 1113a and a second guide channel segment 1113b. The first guide channel segment 1113a extends from the first end face 1111 along the extending direction D1, and the second guide channel segment 1113b extends from the second end face 1112 along the extending direction D1. The first guide channel segment 1113a and the second guide channel segment 1113b are not connected. In this embodiment, the first guide channel segment 1113a and the second guide channel segment 1113b extend along the same straight line. Accordingly, at least one annular copper sheet 120 can be disposed at the tail end of the first guide groove section 1113a from the first end face 1111 via the protrusion 122, and/or at least one annular copper sheet 120 can be disposed at the tail end of the second guide groove section 1113b from the second end face 1112 via the protrusion 122, thereby being stably positioned on the sleeve body 111.

Referring to Figure 2, in this embodiment, the length of the first guide channel section 1113a is different from the length of the second guide channel section 1113b. Accordingly, the magnetic component 100 can have different numbers of annular copper sheets 120 provided at both ends of the sleeve 110 by means of the first guide channel section 1113a and the second guide channel section 1113b of different lengths. However, the length relationship between the first guide channel section 1113a and the second guide channel section 1113b is not limited to the above, and the lengths of the first guide channel section 1113a and the second guide channel section 1113b can be adjusted accordingly based on the number of annular copper sheets 120. For example, when there are only two (or two sets) of annular copper sheets 120, the first guide channel section 1113a and the second guide channel section 1113b can also have the same length.

The following details the assembly steps of the magnetic component 100 in this embodiment.

Figures 4A to 4C illustrate the assembly steps of the magnetic component of Figure 1. To clearly illustrate the structure of the magnetic component 100, the viewpoint in Figure 4A differs from that in Figures 4B and 4C. Referring to Figures 4A to 4C, firstly, slide the protrusion 122 of one or more annular copper sheets 120 from the first end face 1111 into the longer first guide groove section 1113a (as shown in the lower left of the sleeve body 111 in Figure 2), positioning the protrusion 122 at the tail end of the first guide groove section 1113a. Next, slip the already wound coil assembly 130 from the first end face 1111 onto the sleeve body 111 and place it beside the aforementioned annular copper sheet 120. Next, the protrusion 122 of another or a set of annular copper sheets 120 is slid from the first end face 1111 into the shorter first guide groove section 1113a (as shown in the upper left of the sleeve body 111 in Figure 2), and the protrusion 122 is positioned at the tail end of the first guide groove section 1113a. Then, the annular copper sheet 120 and the coil winding 130 can be placed on the sleeve body 111 in the same manner from the second guide groove section 1113b of the second end face 1112, completing the assembly of the magnetic component 100.

Figure 5 is a schematic diagram of the sleeve of a magnetic component according to another embodiment of the present invention. Referring to Figure 5, the difference between the sleeve 110a of the magnetic component 100a of this embodiment and the sleeve 110 of the magnetic component 100 of the above embodiment is that the guide groove 1113 of this embodiment extends from the first end face 1111 along the extending direction D1 to the second end face 1112. When assembling the magnetic component 100a, the annular copper sheet 120 and the coil winding 130 can be selectively fitted onto the sleeve body 111 from either the first end face 1111 or the second end face 1112. Compared with the above embodiment, the placement position of the annular copper sheet 120 in this embodiment is not limited and can be placed at any point in the guide groove 1113. The lengths of the sleeve body 111 and the guide groove 1113 can be configured according to the number of annular copper sheets 120 and coil windings 130. The remaining configurations and modes of operation of the magnetic component 100a in the embodiment shown in Figure 5 are the same as or similar to those of the magnetic component 100 in the aforementioned embodiments, and will not be described again here.

Figure 6 is a schematic diagram of the sleeve of a magnetic component according to another embodiment of the present invention. Referring to Figure 6, the difference between the sleeve 110b of the magnetic component 100b of the present embodiment and the sleeve 110 of the magnetic component 100 of the above embodiment is that at least one of the first guide groove section 1113a and the second guide groove section 1113b of the sleeve 110b of the present embodiment is provided with a groove S at its tail end, and the groove S extends along the circumferential direction C. Accordingly, when the annular copper sheet 120 slides to the tail end of the first guide groove section 1113a and/or the second guide groove section 1113b, the annular copper sheet 120 can rotate relative to the sleeve body 111 in the circumferential direction C, causing the protrusion 122 to rotate into the slot S, so that the annular copper sheet 120 can be more stably positioned.

Referring to Figure 6, preferably, the slot S includes a protrusion S1 that protrudes from the bottom surface of the slot S, ensuring that the protrusion 122, after entering the slot S and passing through the protrusion S1, cannot easily detach from the positioning area S3 in the opposite direction. Furthermore, preferably, the slot S further includes a guide ramp S2 located between the protrusion S1 and the first guide groove segment 1113a or the second guide groove segment 1113b. Accordingly, the protrusion 122 is adapted to be positioned in the positioning area S3 more easily by passing over the protrusion S1 from the first guide groove segment 1113a or the second guide groove segment 1113b, guided by the guide ramp S2.

In this embodiment, the positioning areas S3 of the first guide channel section 1113a and the second guide channel section 1113b extend along the same straight line. Accordingly, when the annular copper sheet 120 rotates to the positioning area S3, the annular copper sheet 120 disposed in the first guide channel section 1113a and the annular copper sheet 120 disposed in the second guide channel section 1113b can be aligned with each other (connecting portions 123 facing the same direction) or symmetrically (connecting portions 123 facing opposite directions) with the connecting portions 123 disposed.

The remaining configuration and operation of the magnetic component 100b in the embodiment shown in Figure 6 are the same as or similar to those of the magnetic component 100 in the aforementioned embodiments, and will not be described again here.

Figure 7A is a schematic diagram of the sleeve of a magnetic component according to another embodiment of the present invention. Figure 7B is a schematic diagram of the sleeve of Figure 7A from another angle. Referring to Figures 7A and 7B, the difference between the sleeve 110c of the magnetic component 100c of this embodiment and the sleeve 110 of the magnetic component 100 of the above embodiment is that the guide groove 1113 of the sleeve 110c of this embodiment has a longitudinal guide groove section 1113c and a transverse guide groove section 1113d. The longitudinal guide groove section 1113c extends from at least one of the first end face 1111 and the second end face 1112 along the extending direction D1, and the transverse guide groove section 1113d extends from both sides of the longitudinal guide groove section 1113c along the circumferential direction C. When the annular copper sheet 120 is installed, after the protrusion 122 slides along the longitudinal guide groove section 1113c to the corresponding transverse guide groove section 1113d, the annular copper sheet 120 can rotate relative to the sleeve body 111 in the circumferential direction C, so that the protrusion 122 rotates to the end of the transverse guide groove section 1113d, thereby positioning the annular copper sheet 120.

In this embodiment, two guide channels 1113 are shown, each guide channel 1113 being shown as one longitudinal guide channel segment 1113c and four transverse guide channel segments 1113d. Preferably, in order to enable each annular copper sheet 120 to be positioned in the transverse guide channel segments 1113d, the transverse guide channel segments 1113d of the two guide channels 1113 in this embodiment are designed to be staggered along the extension direction D1, as shown in FIG7B, so that the annular copper sheet 120 can be positioned at multiple locations on the sleeve body 111.

The remaining configuration and operation of the magnetic component 100c in the embodiments shown in Figures 7A and 7B are the same as or similar to those of the magnetic component 100 in the aforementioned embodiments, and will not be described again here.

In summary, the magnetic component of the transformer of this invention includes a sleeve, an annular copper sheet, and a coil winding. The annular copper sheet has a protrusion extending from the inner circumference of the copper sheet body, and the protrusion is disposed in the guide groove of the sleeve. Accordingly, the magnetic component of the transformer of this invention can position the connecting part of the annular copper sheet without the use of additional fixing components, thereby improving assembly efficiency and reducing costs.

10: Transformer 20: Shell 30: Magnetic Core 31: Center Column 32: Side Column 33: Groove 100, 100a, 100b, 100c: Magnetic Components 110, 110a, 110b, 110c: Sleeves 111: Sleeve Body 112: Stop Part 1111: First End Face 1112: Second End Face 1113: Guide Groove 1113a: First Guide Groove Section 1113b: Second Guide Groove Section 1113c: Longitudinal Guide Groove Section 1113d: Transverse Guide Groove Section 120: Annular Copper Sheet 121: Copper Sheet Body 122: Protrusion 123: Connecting part 1231: Through hole 130: Coil winding C: Circumferential direction D1: Extension direction D2: Axial direction S: Slot S1: Protrusion S2: Guide slope S3: Positioning area

Figure 1 is a schematic diagram of a transformer according to one embodiment of the present invention. Figure 2 is an exploded view of the magnetic core and magnetic components of Figure 1. Figure 3 is a front view of the magnetic core and magnetic components of Figure 1. Figures 4A to 4C illustrate the assembly steps of the magnetic components of Figure 1. Figure 5 is a schematic diagram of the sleeve of the magnetic components according to another embodiment of the present invention. Figure 6 is a schematic diagram of the sleeve of the magnetic components according to another embodiment of the present invention. Figure 7A is a schematic diagram of the sleeve of the magnetic components according to another embodiment of the present invention. Figure 7B is a schematic diagram of the sleeve of Figure 7A from another angle.

10: Transformer

20: Shell

30: Magnetic core

32: Side Post

33: Groove

100: Magnetic components

110: Sleeve

112: Stop section

120: Ring-shaped copper sheet

121: The copper sheet itself

123: Connecting Part

130: Coil winding

Claims (12)

A magnetic component includes: a sleeve including a sleeve body extending in an extending direction, the sleeve body having opposing first end faces and second end faces and a guide groove, the guide groove extending in the extending direction from at least one of the first end faces and the second end faces; an annular copper sheet including a copper sheet body, a protrusion, and a connecting portion, the protrusion protruding from the inner circumference of the copper sheet body in an axial direction and disposed in the guide groove, the connecting portion protruding outward from the outer side of the copper sheet body; and a coil winding disposed in the sleeve body and located between two of the annular copper sheets. The magnetic component as claimed in claim 1, wherein the connecting portion has a through hole. The magnetic component as claimed in claim 1, wherein the guide channel has a first guide channel segment and a second guide channel segment, the first guide channel segment extending from the first end face along the extending direction, the second guide channel segment extending from the second end face along the extending direction, and the first guide channel segment and the second guide channel segment are not connected. The magnetic component as claimed in claim 3, wherein the first guide groove and the second guide groove extend along the same straight line. The magnetic component as claimed in claim 3, wherein the length of the first guide channel is different from the length of the second guide channel. The magnetic component as claimed in claim 1, wherein the channel extends from the first end face along the extension direction to the second end face. The magnetic component as claimed in claim 3, wherein at least one of the first guide groove segment and the second guide groove segment is provided with a slot at its tail end, the slot extending in a circumferential direction. The magnetic component as claimed in claim 7, wherein the slot includes a protrusion that protrudes from the bottom surface of the slot. The magnetic component as claimed in claim 8, wherein the slot further includes a guide ramp located between the protrusion and the first guide groove segment or the second guide groove segment. The magnetic component as claimed in claim 1, wherein the guide channel has a longitudinal guide channel section and a transverse guide channel section, the longitudinal guide channel section extending from at least one of the first end face and the second end face along the extending direction, and the transverse guide channel section extending circumferentially from both sides of the longitudinal guide channel section. The magnetic component as claimed in claim 1, wherein the sleeve further includes a stop portion that protrudes outward from the first end face and the second end face along the extending direction of the sleeve body. A transformer includes: a housing; a magnetic component as described in any one of claims 1 to 11; and a magnetic core disposed in the housing, the magnetic core including a central post and side posts, the sleeve being sleeved on the central post.