CN104302106A - Magnetic ring positioning structure based on heavy copper PCB - Google Patents
Magnetic ring positioning structure based on heavy copper PCB Download PDFInfo
- Publication number
- CN104302106A CN104302106A CN201410557184.1A CN201410557184A CN104302106A CN 104302106 A CN104302106 A CN 104302106A CN 201410557184 A CN201410557184 A CN 201410557184A CN 104302106 A CN104302106 A CN 104302106A
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- heavy copper
- magnetic ring
- circuit board
- copper circuit
- support
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Abstract
The invention discloses a magnetic ring positioning structure based on a heavy copper PCB. An E-shaped magnetic ring is inserted upwards in the heavy copper PCB for conducting coarse positioning, and a support with openings in the upper portion and the lower portion is arranged on the heavy copper PCB in an interference mode. A plurality of first elastic positioning pieces which are placed on the lower portion and a plurality of second elastic positioning pieces which are placed on the upper portion are formed on the inner wall of the support. The parts, protruding out of the heavy copper PCB, of the E-shaped magnetic ring are located in the support and are clamped between the first elastic positioning pieces. An I-shaped magnetic ring is mounted above the E-shaped magnetic ring and is placed between the second elastic positioning pieces. According to the magnetic ring positioning structure based on the heavy copper PCB, the E-shaped magnetic ring is precisely positioned through the first elastic positioning pieces, the I-shaped magnetic ring is precisely positioned through the second elastic positioning pieces, the support and the heavy copper PCB are in interference fit, the entire positioning structure is simple, and manufacturing and assembling are easy. Moreover, in the horizontal direction, the support provides appropriate pretightening force through the elastic positioning pieces; in the vertical direction, pretightening force is provided through the compression amount of a buffer layer, the vibration shock demand is met, and the magnetic rings are also prevented from being crushed.
Description
Technical field
The present invention relates to the location technology of automobile-used DC/DC transducer middle magnetic ring, be applicable to the location structure of the large components and parts (as transformer, inductance etc.) in other power electronic product around circuit board simultaneously.
Background technology
Magnet ring is the important component part in automobile DC/DC transducer or other power electronic product, and the magnet ring wherein in heavy copper circuit board (being called for short PCB) structure is made up of I type magnet ring and E-type magnetic ring, and the two forms magnetic circuit jointly.E-type magnetic ring is large due to caloric value, needs to dispel the heat by cooled plate, and therefore E-type magnetic ring to be placed in cooled plate and to be undertaken by PCB slightly spacing.I type magnet ring is directly placed on E-type magnetic ring, because its structure is simple, lacks limit features, therefore is difficult to location.
Existing targeting scheme mainly designs position limiting structure on the top cover of transducer, as shown in Figure 1, guide vane end stop is formed at two diagonal angles place of top cover, but, because I type magnet ring is heavier, it cannot be made to be fixed on top cover by the mode of some glue, therefore before top cover is installed, still cannot carry out accurate limit to I type magnet ring.
In addition, part targeting scheme increases by a plastic stent between E-type magnetic ring and I type magnet ring, as shown in Fig. 2 a, Fig. 2 b, the limited impression of corresponding E-type magnetic ring is formed on the bottom of this plastic stent, three of E-type magnetic ring juts can be made to insert, the cavity of accommodating I type magnet ring is formed on top, therefore I type magnet ring carries out coarse positioning by plastic stent, and plastic stent then carries out coarse positioning by E-type magnetic ring.Because the dimensional tolerance of magnet ring is comparatively large, usually at ± 0.3mm, therefore be difficult to realize interference fit, there is gap in plastic stent and E, I type magnet ring, plastic stent still cannot fix magnet ring effectively, and this just causes the generation of leakage field situation.
In addition, in existing location structure, all there is fit-up gap in E-type magnetic ring and I type magnet ring in the horizontal direction, and this makes magnet ring under the impact condition of 50g, just there is the risk of damaged in collision.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of magnetic ring positioning construction based on heavy copper circuit board, can realize the accurate location of I type magnet ring and E-type magnetic ring, can meet vibratory impulse requirement simultaneously, avoid magnet ring to damage.
For solving the problems of the technologies described above, magnetic ring positioning construction based on heavy copper circuit board provided by the invention, comprise I type magnet ring, heavy copper circuit board, E-type magnetic ring, wherein E-type magnetic ring is installed on the cooling plate, heavy copper circuit board is formed with through hole, (magnet ring groove is built with the heat-conducting pad contacted with heavy copper circuit board for E-type magnetic ring, the heat of heavy copper circuit board is conducted) to be upwards inserted in the through hole of heavy copper circuit board and its top is given prominence to above heavy copper circuit board, described heavy copper circuit board is installed the support of a upper and lower opening, this support and heavy copper circuit board interference fit; The inwall of described support is formed with some first flexible positioning pieces and some second flexible positioning pieces, the part that described E-type magnetic ring gives prominence to heavy copper circuit board is stuck between the first flexible positioning piece in support, and described I type magnet ring to be arranged on above E-type magnetic iron and to be stuck between the second flexible positioning piece.
Preferably, the inwall of described support is square.Further, described first flexible positioning piece lays respectively at the middle and lower part of each medial surface of support.Better, each medial surface of described support is formed with two the second flexible positioning pieces, and it lays respectively at the both sides of the first flexible positioning piece of ipsilateral.
Preferably, described first flexible positioning piece is for upwarping arc-like sheet, and described second flexible positioning piece is lower curved arc-like sheet.Better, the inwall of described support is formed with some extension blocks, and the medial surface of each extension block is formed with one and upwarps arc-like sheet.
Further, described heavy copper circuit board is formed with at least two location holes, and wherein two location holes lay respectively at two diagonal angle places of E-type magnetic ring; The bottom of described support is formed with the angle corresponding with the position of positioning hole of heavy copper circuit board, and support and heavy copper circuit board are fixed by angle and location hole interference fit.Preferably, location hole and angle are two.
In addition, described coldplate has the cavity of accommodating E-type magnetic ring, installs on the cooling plate with the heavy copper circuit board of support interference fit, is provided with heat-conducting pad and carries out heat transfer between E-type magnetic ring and coldplate.Location structure also comprises an end cap, and this end cap is fixedly connected with coldplate, and described I type magnet ring, support, heavy copper circuit board and E-type magnetic ring seal are contained between end cap and coldplate.Better, be provided with silica gel foamed buffer layer between described I type magnet ring and end cap.
In the present invention, E-type magnetic ring carries out slightly spacing and accurate location respectively by the flexible positioning piece of heavy copper circuit board and support, the I type magnet ring be placed on E-type magnetic ring is accurately located by the flexible positioning piece of support, support and heavy copper circuit board interference fit simultaneously, whole location structure is simple, is easy to manufacture and assembling.And, in the horizontal direction upper bracket by flexible positioning piece for E-type magnetic ring and I type magnet ring provide suitable pretightning force, in the vertical direction E-type magnetic ring and I type magnet ring are fixed by end cap and provide thrust by the decrement of resilient coating, vibratory impulse requirement can be met, and avoid magnet ring to be damaged by pressure.
Accompanying drawing explanation
Fig. 1 is the magnetic ring positioning construction adopting top cover in prior art;
Fig. 2 a, 2b are the magnetic ring positioning construction adopting plastic stent in prior art;
Fig. 3 is the decomposing schematic representation of magnetic ring positioning construction of the present invention;
Fig. 4 a is the schematic perspective view of support of the present invention;
Fig. 4 b is the end view of support of the present invention;
Fig. 4 c is the cutaway view of support of the present invention;
Fig. 5 be support with heavy copper circuit board coordinate schematic diagram;
Fig. 6 is the cooperation schematic diagram of support, heavy copper circuit board and E-type magnetic ring;
Fig. 7 is the cooperation schematic diagram of support, heavy copper circuit board, E-type magnetic ring and I type magnet ring.
Wherein description of reference numerals is as follows:
1 is end cap; 2 is silica gel foamed buffer layer; 3 is I type magnet ring; 4 is support; 41 is angle; 42 for upwarping arc-like sheet; 43 is lower curved arc-like sheet; 44 is extension block; 5 is heavy copper circuit board; 51 is location hole; 52 is through hole; 6 is heat-conducting pad; 7 is E-type magnetic ring; 8 is heat-conducting pad; 9 is cooled plate.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation.
Magnetic ring positioning construction based on heavy copper circuit board provided by the invention, be applicable to DC/DC transducer and Power electronic converter, comprise I type magnet ring 3, heavy copper circuit board 5, E-type magnetic ring 7, wherein I type magnet ring 3 is in plane, the planar section that E-type magnetic ring 7 comprises below and three juts be formed on planar section, form magnet ring groove between adjacent jut, and the center protrusion part of E-type magnetic ring 7 is lower than both sides jut.E-type magnetic ring 7 is arranged on and coldplate positions and dispels the heat.Heavy copper circuit board 5 is formed with through hole 52, E-type magnetic ring 7 is upwards inserted in the through hole 52 of heavy copper circuit board 5 and carries out coarse positioning, and the top of E-type magnetic ring 7 is given prominence to above heavy copper circuit board 5, the heat being provided with heat-conducting pad 6 pairs of heavy copper circuit boards generations in magnet ring groove carries out heat loss through conduction.
Heavy copper circuit board 5 is installed the support 4 of a upper and lower opening, this support 4 and heavy copper circuit board 5 interference fit.The inwall of support 4 is formed with some first flexible positioning pieces and some second flexible positioning pieces, the part that described E-type magnetic ring 7 gives prominence to heavy copper circuit board 5 is stuck between the first flexible positioning piece in support 4, and described I type magnet ring 3 to be arranged on above E-type magnetic iron 7 and to be stuck between the second flexible positioning piece.Because the center protrusion part of E-type magnetic ring 7 is lower than both sides jut, therefore the bottom surface of I type magnet ring 3 contacts with the end face of E-type magnetic ring 7 both sides jut, and there is gap to prevent saturation effects between the end face of E-type magnetic ring 7 center protrusion part, therefore the first flexible positioning piece is formed at the inner wall lower of support 4, the second flexible positioning piece is formed at the upper inside wall of support 4.
Preferably, in the present embodiment, the inwall of support 4 is square, as shown in fig. 4 a, first flexible positioning piece lays respectively at the middle and lower part of each medial surface of support 4, and each medial surface of support 4 is formed with two the second flexible positioning pieces, and it lays respectively at the both sides of the first flexible positioning piece of ipsilateral.Certainly, the quantity of the second flexible positioning piece is not limited thereto, and also can arrange above the first flexible positioning piece, as long as spatially allow.
Preferably, as shown in Fig. 4 a, Fig. 4 c, the first flexible positioning piece is for upwarping arc-like sheet 42, and the second flexible positioning piece is lower curved arc-like sheet 43.Each medial surface of support 4 is formed one upwarp arc-like sheet 42 and two under curved arc-like sheet 43, and lower curved arc-like sheet 43 is positioned at the both sides upwarping arc-like sheet 42.As shown in Figure 6, E-type magnetic ring 7 is installed in support 4, and four upwarp arc-like sheet 42 and carry out accurate limiting in the XY both direction of horizontal plane to E-type magnetic ring 7, make it can meet vibratory impulse requirement, can avoid again being damaged by pressure.Similarly, as shown in Figure 7, I type magnet ring 3 loads in support 4, and under eight, curved arc-like sheet 43 carries out accurate limiting in the XY both direction of horizontal plane to E-type magnetic ring 7, makes it can meet vibratory impulse requirement, can avoid again being damaged by pressure.Better, each arc-like sheet 42 that upwarps is formed on an extension block 44, and this extension block 44 is positioned on the medial surface of support 4, as shown in Fig. 4 a, Fig. 4 c.
Preferably, as shown in Fig. 3, Fig. 5, heavy copper circuit board 5 is formed with two location holes 51, lay respectively at two diagonal angle places of E-type magnetic ring 7, accordingly, as shown in Fig. 4 b, Fig. 4 c, the bottom of support 4 is formed with the angle 41 corresponding with location hole 51 position of heavy copper circuit board 5, and support 4 and heavy copper circuit board 5 are fixed by angle 41 and location hole 51 interference fit.Angle 41 can be formed directly on the framework of support 4, or as shown in fig. 4 a, the inner corner of support 4 is formed the leg block of gaining in strength, and angle 41 is formed on leg block.In the present embodiment, location hole 51 and angle 41 all adopt two, but be not limited thereto, can according to circumstances arrange multiple with frame bottom around E-type magnetic ring, as long as ensure that wherein two location holes lay respectively at two diagonal angle places of E-type magnetic ring, as shown in Fig. 3, Fig. 4 c, can ensure that XY both direction is spacing to E-type magnetic ring in heavy copper circuit board plane like this.
E-type magnetic ring 7 caloric value is large, needs to dispel the heat by coldplate.In the present embodiment, coldplate is for cooled plate 9, and have a cavity (as shown in Figure 3, non-label), E-type magnetic ring 7 is arranged in this cavity and positions and dispel the heat, and is provided with heat-conducting pad 8 between E-type magnetic ring 7 and cooled plate 9.Be arranged in cooled plate 9 with the heavy copper circuit board 5 of support 4 interference fit.
Cooled plate 9 is fixedly connected with an end cap 1, this end cap has inner chamber upwardly, I type magnet ring 3, support 4, heavy copper circuit board 5 and E-type magnetic ring 7 are encapsulated between end cap 1 and cooled plate 9, silica gel foamed buffer layer 2 is provided with between I type magnet ring 3 and end cap 1, in the vertical direction can provide suitable thrust for E-type magnetic ring 7 and I type magnet ring 3 by the decrement controlling silica gel foamed buffer layer 2, vibratory impulse requirement can be met, can avoid again damaging I type magnet ring 3 and E-type magnetic ring 7 by pressure.
In the present embodiment, support 4 adopts plastic material, and its inner injection moulding has flexible arc-like sheet, is easy to manufacture, but is not limited to this material.
Above by specific embodiment to invention has been detailed description, this embodiment is only preferred embodiment of the present invention, and it not limits the invention.Without departing from the principles of the present invention; those of ordinary skill in the art to other embodiments all that the shape etc. of the quantity of the first flexible positioning piece and the second flexible positioning piece and shape, support is obtained by modes such as any amendment, equivalent replacement, improvement, all should be considered as in the technology category protected in the present invention under the prerequisite not making creative work.
Claims (11)
1. the magnetic ring positioning construction based on heavy copper circuit board, comprise I type magnet ring (3), heavy copper circuit board (5), E-type magnetic ring (7), wherein E-type magnetic ring (7) is installed on the cooling plate, heavy copper circuit board (5) is formed with through hole (52), E-type magnetic ring (7) is upwards inserted in the through hole (52) of heavy copper circuit board (5) and its top and gives prominence in heavy copper circuit board (5) top, it is characterized in that, the support (4) of upper installation one upper and lower opening of described heavy copper circuit board (5), this support (4) and heavy copper circuit board (5) interference fit, the inwall of described support (4) is formed with some first flexible positioning pieces and some second flexible positioning pieces, the part of the outstanding heavy copper circuit board (5) of described E-type magnetic ring (7) is positioned at support (4) and is stuck between the first flexible positioning piece, and described I type magnet ring (3) is arranged on E-type magnetic iron (7) top and is stuck between the second flexible positioning piece.
2. the magnetic ring positioning construction based on heavy copper circuit board according to claim 1, is characterized in that, the inwall of described support (4) is square.
3. the magnetic ring positioning construction based on heavy copper circuit board according to claim 2, is characterized in that, described first flexible positioning piece is formed at the middle and lower part of support (4) each medial surface respectively.
4. the magnetic ring positioning construction based on heavy copper circuit board according to claim 3, is characterized in that, each medial surface of described support (4) is formed with two the second flexible positioning pieces, and it lays respectively at the both sides of the first flexible positioning piece of ipsilateral.
5. the magnetic ring positioning construction based on heavy copper circuit board according to claim 1 or 2 or 3 or 4, is characterized in that, described first flexible positioning piece is for upwarping arc-like sheet (42), and described second flexible positioning piece is lower curved arc-like sheet (43).
6. the magnetic ring positioning construction based on heavy copper circuit board according to claim 5, it is characterized in that, the inwall of described support (4) is formed with some extension blocks (44), and the medial surface of each extension block (44) is formed with one and upwarps arc-like sheet (42).
7. the magnetic ring positioning construction based on heavy copper circuit board according to claim 1 and 2, it is characterized in that, described heavy copper circuit board (5) is formed with at least two location holes (51), and wherein two location holes (51) lay respectively at two diagonal angle places of E-type magnetic ring (7); The bottom of described support (4) is formed with the angle (41) corresponding with the location hole of heavy copper circuit board (5) (51) position, and support (4) and heavy copper circuit board (5) are fixed by angle (41) and location hole (51) interference fit.
8. the magnetic ring positioning construction based on heavy copper circuit board according to claim 7, is characterized in that, the location hole (51) of described heavy copper circuit board (5) and the angle (41) of support (4) are two.
9. the magnetic ring positioning construction based on heavy copper circuit board according to claim 1, it is characterized in that, described coldplate has the cavity of accommodating E-type magnetic ring (7), installs on the cooling plate with the heavy copper circuit board (5) of support (4) interference fit.
10. the magnetic ring positioning construction based on heavy copper circuit board according to claim 9, it is characterized in that, also comprise an end cap (1), this end cap (1) is fixedly connected with coldplate, and described I type magnet ring (3), support (4), heavy copper circuit board (5) and E-type magnetic ring (7) are encapsulated between end cap (1) and coldplate.
11. magnetic ring positioning constructions based on heavy copper circuit board according to claim 10, is characterized in that, are provided with silica gel foamed buffer layer (2) between described I type magnet ring (3) and end cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557184.1A CN104302106B (en) | 2014-10-20 | 2014-10-20 | Magnetic ring positioning construction based on heavy copper circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557184.1A CN104302106B (en) | 2014-10-20 | 2014-10-20 | Magnetic ring positioning construction based on heavy copper circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104302106A true CN104302106A (en) | 2015-01-21 |
| CN104302106B CN104302106B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410557184.1A Active CN104302106B (en) | 2014-10-20 | 2014-10-20 | Magnetic ring positioning construction based on heavy copper circuit board |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2702463Y (en) * | 2004-03-23 | 2005-05-25 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN200972990Y (en) * | 2006-10-25 | 2007-11-07 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
| CN201041910Y (en) * | 2007-03-20 | 2008-03-26 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
| CN201750024U (en) * | 2010-07-28 | 2011-02-16 | 昆山宏泽电子有限公司 | Signal transmission connector |
| CN103377805A (en) * | 2012-04-12 | 2013-10-30 | 松下电器产业株式会社 | Power converting transformer, vehicle headlight provided with the power converting transformer and motor vehicle provided with the headlight |
-
2014
- 2014-10-20 CN CN201410557184.1A patent/CN104302106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2702463Y (en) * | 2004-03-23 | 2005-05-25 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN200972990Y (en) * | 2006-10-25 | 2007-11-07 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
| CN201041910Y (en) * | 2007-03-20 | 2008-03-26 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
| CN201750024U (en) * | 2010-07-28 | 2011-02-16 | 昆山宏泽电子有限公司 | Signal transmission connector |
| CN103377805A (en) * | 2012-04-12 | 2013-10-30 | 松下电器产业株式会社 | Power converting transformer, vehicle headlight provided with the power converting transformer and motor vehicle provided with the headlight |
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| Publication number | Publication date |
|---|---|
| CN104302106B (en) | 2017-08-25 |
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