CN207781365U - Magnetic ferrite magnetic core blank - Google Patents
Magnetic ferrite magnetic core blank Download PDFInfo
- Publication number
- CN207781365U CN207781365U CN201721898214.0U CN201721898214U CN207781365U CN 207781365 U CN207781365 U CN 207781365U CN 201721898214 U CN201721898214 U CN 201721898214U CN 207781365 U CN207781365 U CN 207781365U
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- China
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- bottom plate
- strip bulge
- wire lead
- lead slot
- magnetic core
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Abstract
The utility model discloses a kind of magnetic ferrite magnetic core blanks, including bottom plate, it is fixedly arranged in the middle of wrapping post in bottom plate front surface, it is equipped with wire lead slot in bottom plate front surface, in the middle part of the rear surface of bottom plate strip bulge is equipped with along the centerline direction of wire lead slot, the middle part of the strip bulge is equipped with criss-cross recess, recess is not less than the width of wrapping post with the length on one side of wire lead slot centerline parallel, and less than the length of strip bulge, recess is equal to the width of strip bulge with the length on one side of wire lead slot central axis, concave bottom surface is overlapped with bottom plate rear surface.The utility model solves magnetic core blank piece when powder pressing is molded, the problem of wrapping post is easily broken off, by ensureing compacting, densification between wrapping post and bottom plate and the part powder particles of wrapping post connection, to reduce the probability that the region powder particles are uneven or the non-uniform situation of moisture occurs, to ensure that magnetic core in the yields of suppression process, improves production efficiency.
Description
Technical field
The utility model is related to magnetic core, more particularly to a kind of magnetic core blank piece.
Background technology
The sintering magnetic metal oxide that magnetic core is made of various iron oxide mixtures, in the prior art, ferrite magnetic
Core is in the coil and transformer of various electronic equipments.For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core arrays
Material, wherein manganese-zinc ferrite has the characteristics that high magnetic permeability and high magnetic flux density, has when less than the frequency of 1MHz relatively low
The characteristic of loss, the characteristics such as the low magnetic permeability of nickel-zinc ferrite with high unit area impedance, less than hundreds of, and higher than 1MHz
Frequency generate compared with low-loss etc..
Present electronic product requires to improve to miniaturization and ultrathin development, to space utilization, thus on magnetic core in order to
Wire lead slot is reserved to line packet, i.e., is respectively equipped with recessed a groove to bottom plate both ends in the both sides of product base plate interior wrapping post
Son, such as ED1709 magnetic cores.During producing ED1709 magnetic cores, the magnetic core bottom plate front surface of full-automatic dry powder press suppressed
Smooth, such structure causes density of the density of lead slot part just than other parts on magnetic core big, then magnetic core is sintered it
Afterwards, which causes to shrink greatly small, and part is easily caused to cause deformation of products greatly, causes rejection rate to occupy high.
In order to solve this problem, filed in the applicant's August in 2016 31 days《The high high Bs soft magnets of temperature ultra-low loss
Ferrite core blank》Utility model patent（Application number 201620992422.6）, disclose a kind of high Bs of high temperature ultra-low loss
Magnetic ferrite magnetic core blank, including bottom plate, in the wrapping post that is fixedly arranged in the middle of of bottom plate front surface, the two of the bottom of wrapping post
Side to bottom plate both ends are respectively equipped with to be recessed the wire lead slot to be formed in bottom plate front surface, along wire lead slot in the middle part of the rear surface of the bottom plate
Centerline direction be equipped with strip bulge, the width of the strip bulge is not less than the width of wire lead slot, the height of strip bulge
Less than the depth of wire lead slot.
The technical solution of the utility model preferably solves the problems, such as deformation of products, but the applicant is in production process
In, discovery still has problem：In compression moulding, wrapping post is easy to fall off wrapping post.It is found after the applicant's research, this is
Because the powder of compacting magnetic core always has, powder particles are uneven, the non-uniform part of moisture, and when suppressing magnetic core, the bar shaped of bottom plate is convex
Rise and need more powders, this substantially increase magnetic core bottom plate encounter that powder particles are uneven or the uneven situation of moisture it is general
Rate is also increased by the probability that wrapping post is easy to fall off.
Utility model content
In order to overcome drawbacks described above, the utility model to provide a kind of magnetic core blank piece, suppressed at the magnetic core bottom plate back side
Raised central portion set portion concave, ensure that magnetic core wrapping post is not fallen out.
The utility model is achieved through the following technical solutions：
High magnetic ferrite magnetic core blank, including bottom plate are fixedly arranged in the middle of wrapping post, in bottom plate in bottom plate front surface
Front surface is equipped with wire lead slot, and strip bulge, the bar shaped are equipped with along the centerline direction of wire lead slot in the middle part of the rear surface of bottom plate
The middle part of protrusion is equipped with criss-cross recess, and recess is not less than the width of wrapping post with the length on one side of wire lead slot centerline parallel
Degree, and less than the length of strip bulge, recess is equal to the width of strip bulge with the length on one side of wire lead slot central axis,
Concave bottom surface is overlapped with bottom plate rear surface.
The strip bulge is not less than the width of wire lead slot, and the height of strip bulge is less than the depth of wire lead slot.
Vertical range of the both sides of the edge of the strip bulge apart from the side of nearest wire lead slot is equal to 1 ~ 1.1 millimeter.
The height of the strip bulge is the 60 ~ 70% of lead groove depth.
The beneficial effects of the utility model：
The problem of the utility model solves magnetic core blank piece when powder pressing is molded, and wrapping post is easily broken off, passes through
Ensure compacting, densification between wrapping post and bottom plate and the part powder particles of wrapping post connection, to reduce the region powder
The probability that the non-uniform situation of the uneven or moisture of grain occurs, to ensure that magnetic core in the yields of suppression process, improves life
Produce efficiency.
Description of the drawings
Fig. 1 is the utility model schematic elevation view.
Fig. 2 is the utility model bottom plate rear surface schematic diagram.
Fig. 3 is the utility model bottom plate front surface schematic diagram.
Fig. 4 is the utility model finished product structure schematic diagram.
Specific implementation mode
In conjunction with Fig. 1 to Fig. 3, the utility model includes bottom plate 1, and wrapping post 2 is fixedly arranged in the middle of in 1 front surface of bottom plate,
1 front surface of bottom plate is equipped with wire lead slot 3, and strip bulge 4 is equipped with along the centerline direction of wire lead slot 3 in the middle part of the rear surface of bottom plate 1,
The middle part of the strip bulge 4 is equipped with criss-cross recess 5, and recess 5 is not small with the length on one side of 3 centerline parallel of wire lead slot
In the width of wrapping post 2, and less than the length of strip bulge 4, the length etc. of recess 5 and one side of 3 central axis of wire lead slot
In the width of strip bulge 4,5 bottom surfaces of recess are overlapped with 1 rear surface of bottom plate.
The strip bulge 4 is not less than the width of wire lead slot 3, and the height of strip bulge 4 is less than the depth of wire lead slot 3.
Vertical range of the both sides of the edge of the strip bulge 4 apart from the side of nearest wire lead slot 3 is equal to 1 ~ 1.1 milli
Rice.
The height of the strip bulge 4 is the 60 ~ 70% of 3 depth of wire lead slot.
When magnetic powder is after full-automatic dry powder press suppresses magnetic core blank piece, start to be sintered, the magnetic core blank sintered
Part grinds off the strip bulge 4 of bottom plate rear surface using grinding, and bottom plate rear surface is smooth, as shown in figure 4, obtaining magnetic core
Finished product.
Claims (4)
1. magnetic ferrite magnetic core blank, including bottom plate are fixedly arranged in the middle of wrapping post, the table before bottom plate in bottom plate front surface
Face is equipped with wire lead slot, and strip bulge is equipped with along the centerline direction of wire lead slot in the middle part of the rear surface of bottom plate, it is characterised in that：Institute
The middle part for stating strip bulge is equipped with criss-cross recess, and recess and the length on one side of wire lead slot centerline parallel are not less than coiling
The width of column, and it is equal to strip bulge less than the length of strip bulge, recess and the length on one side of wire lead slot central axis
Width, concave bottom surface is overlapped with bottom plate rear surface.
2. magnetic ferrite magnetic core blank according to claim 1, it is characterised in that：The strip bulge is not less than and draws
The width of wire casing, the height of strip bulge are less than the depth of wire lead slot.
3. magnetic ferrite magnetic core blank according to claim 2, it is characterised in that：The two sides of the strip bulge
Vertical range of the edge apart from the side of nearest wire lead slot is equal to 1 ~ 1.1 millimeter.
4. magnetic ferrite magnetic core blank according to claim 2, it is characterised in that：The height of the strip bulge is
The 60 ~ 70% of lead groove depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721898214.0U CN207781365U (en) | 2017-12-29 | 2017-12-29 | Magnetic ferrite magnetic core blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721898214.0U CN207781365U (en) | 2017-12-29 | 2017-12-29 | Magnetic ferrite magnetic core blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207781365U true CN207781365U (en) | 2018-08-28 |
Family
ID=63224299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721898214.0U Active CN207781365U (en) | 2017-12-29 | 2017-12-29 | Magnetic ferrite magnetic core blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207781365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539666A (en) * | 2021-07-29 | 2021-10-22 | 沭阳康顺磁性器材有限公司 | Preparation method of T-shaped anti-interference soft magnetic ferrite core |
-
2017
- 2017-12-29 CN CN201721898214.0U patent/CN207781365U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539666A (en) * | 2021-07-29 | 2021-10-22 | 沭阳康顺磁性器材有限公司 | Preparation method of T-shaped anti-interference soft magnetic ferrite core |
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