CN110828106A - Low-frequency transformer with built-in shielding layer - Google Patents
Low-frequency transformer with built-in shielding layer Download PDFInfo
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- CN110828106A CN110828106A CN201911152748.2A CN201911152748A CN110828106A CN 110828106 A CN110828106 A CN 110828106A CN 201911152748 A CN201911152748 A CN 201911152748A CN 110828106 A CN110828106 A CN 110828106A
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- frequency transformer
- fixedly connected
- low
- shielding layer
- built
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The invention discloses a low-frequency transformer with a built-in shielding layer, which comprises a shell with an opening structure at the bottom, a framework, a coil, pins and an iron core, wherein the shielding layer is fixedly connected to the inner side of the shell, the framework is fixedly connected to the inner side of the shielding layer, the iron core is fixedly connected to the inner side of the framework, the coil is arranged on the outer surface of the iron core, two groups of mounting plates with concave tops are fixedly connected to the bottom of the framework, and conducting strips are fixedly connected to the inner sides of the tops of the mounting plates. According to the invention, firstly, the shielding layer is arranged on the inner side of the shell, the shell is made of the aluminum nitride ceramic material, the good insulating property and the heat conductivity of the aluminum nitride ceramic material are utilized, the insulating property of the low-frequency transformer is improved while the low-frequency transformer is subjected to good electromagnetic shielding, and secondly, the pins are slidably embedded into the limiting grooves to be fixed under the extrusion action of the extrusion springs, so that the pins are installed, and therefore, the pins are conveniently disassembled and assembled.
Description
Technical Field
The invention relates to the technical field of low-frequency transformers, in particular to a low-frequency transformer with a built-in shielding layer.
Background
The low-frequency transformer is used for transmitting signal voltage and signal power, can also realize impedance matching between circuits, and has an isolation effect on direct current. High frequency transformers are in principle not distinguished from low frequency transformers. However, the iron core used for the transformer is different due to the difference between the high frequency and the low frequency. Low frequency transformers generally use high permeability silicon steel sheets, while high frequency transformers use high frequency ferrite cores.
The low frequency transformer adopts shell structure's shielding layer mostly, sets up the shell into metal shielding material or paints shielding coating's structure, can influence external insulation's performance, simultaneously, nevertheless because the requirement of PBC board to the stitch quantity of low frequency transformer bottom is different, the stitch dismouting convenience is poor to lead to stitch quantity can not the random strain, brought inconvenience for the user.
Disclosure of Invention
The invention aims to: in order to solve the problems of poor insulating property and poor pin dismounting convenience, the low-frequency transformer with the built-in shielding layer is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a built-in shielding layer low frequency transformer, is including shell, skeleton, coil, stitch and the iron core that is bottom open structure, the inboard fixedly connected with shielding layer of shell, the inboard fixedly connected with skeleton of shielding layer, and the inboard fixedly connected with iron core of skeleton, the surface of iron core is provided with the coil, the two sets of tops of bottom fixedly connected with of skeleton are the mounting panel of interior concave type structure, the inboard fixedly connected with conducting strip in top of mounting panel, the spout has been seted up to the inside of mounting panel, the inside of mounting panel is located the top of spout and has seted up the multiunit spacing groove, the inboard slip of spout has two clamp plates, and the equal fixedly connected with in bottom both sides of two clamp plates runs through the support column of mounting panel, the clearance department of two clamp plates is provided with the multi.
As a further description of the above technical solution:
the outer surface of the supporting column is provided with an extrusion spring between the pressing plate and the mounting plate in a sleeved mode.
As a further description of the above technical solution:
the cross section of the pin is of a T-shaped structure, the outer surface wall of the vertical end of the pin is attached to the inner walls of the two pressing plates on the opposite sides, and the outer surface wall of the horizontal end of the pin is attached to the inner walls of the limiting grooves.
As a further description of the above technical solution:
the outer end face of the shell is fixedly connected with a plurality of groups of radiating convex fins with hemispherical cross sections.
As a further description of the above technical solution:
the outer surface of the heat dissipation convex fin is fixedly connected with a plurality of groups of flexible pads, and heat dissipation grooves are formed among the plurality of groups of flexible pads.
As a further description of the above technical solution:
the flexible pad is made of organic silicon materials.
As a further description of the above technical solution:
the shell and the heat dissipation convex fins are both made of aluminum nitride ceramic materials.
As a further description of the above technical solution:
the bottom of the mounting plate is flush with the bottom of the shell in the horizontal direction.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the shielding layer is arranged on the inner side of the shell, the shell is made of the aluminum nitride ceramic material, and the good insulating property and thermal conductivity of the aluminum nitride ceramic material are utilized, so that the insulating property of the low-frequency transformer is improved while the low-frequency transformer is subjected to good electromagnetic shielding.
2. According to the invention, when too much stitch is conveyed, the pressing plate is driven to slide downwards by pulling the stitch downwards, when the stitch slides out of the inner side of the limiting groove, the stitch is horizontally slid, redundant stitches are taken down, the stitch is loosened, other stitches slide and are embedded into the limiting groove to be fixed under the extrusion action of the extrusion spring, the detachment of the stitch is completed, when the number of the stitch is too small, the stitch is pulled downwards to slide and be embedded into the limiting groove, the stitch slides and is embedded into the gap between the two pressing plates through the gap between the two pressing plates, the stitch is adjusted to the position below the corresponding limiting groove, the stitch is loosened, the stitch slides and is embedded into the limiting groove to be fixed under the extrusion action of the extrusion spring, the installation of the stitch is completed, and therefore, the convenient and fast detachment of the stitch is realized.
3. According to the invention, the radiating convex fins and the shell are made of the aluminum nitride ceramic material, the good thermal conductivity of the aluminum nitride ceramic material is utilized to discharge the heat generated by the low-frequency transformer outwards, and the radiating area is increased by utilizing the radiating convex fins, so that the radiating performance of the low-frequency transformer is improved.
4. According to the invention, the flexible pad is made of the organic silicon material, the shock absorption performance of the organic silicon material is utilized, the shock resistance performance of the low-frequency transformer is improved, meanwhile, the organic silicon product has good electrical insulation performance and has certain voltage resistance, electric arc resistance and corona resistance, so that the low-frequency transformer has certain electric arc prevention capability, and the shock resistance and electric arc prevention performance of the low-frequency transformer are improved.
Drawings
Fig. 1 is a schematic structural diagram of a low-frequency transformer with a built-in shielding layer according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of a cross-sectional view according to an embodiment of the present invention;
FIG. 3 shows a schematic view of a partial enlargement at A provided in accordance with an embodiment of the invention;
FIG. 4 illustrates a schematic diagram of a side cross-sectional view of a mounting plate provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic view illustrating a connection structure between a heat dissipation fin and a flexible pad according to an embodiment of the present invention.
Illustration of the drawings:
1. a housing; 2. heat dissipation convex fins; 3. a flexible pad; 4. a heat sink; 5. a support pillar; 6. a stitch; 7. a framework; 8. an iron core; 9. a coil; 10. a shielding layer; 11. mounting a plate; 12. a conductive sheet; 13. a chute; 14. Pressing a plate; 15. a limiting groove; 16. compressing the spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, referring to fig. 1-5, the present invention provides a technical solution: a low-frequency transformer with a built-in shielding layer comprises a shell 1 with an opening structure at the bottom, a framework 7, a coil 9, pins 6 and an iron core 8, wherein the shielding layer 10 is fixedly connected to the inner side of the shell 1, the framework 7 is fixedly connected to the inner side of the shielding layer 10, the iron core 8 is fixedly connected to the inner side of the framework 7, the coil 9 is arranged on the outer surface of the iron core 8, two groups of mounting plates 11 with concave top portions are fixedly connected to the bottom of the framework 7, a conducting strip 12 is fixedly connected to the inner side of the top portions of the mounting plates 11, a sliding groove 13 is formed in the mounting plates 11, a plurality of limiting grooves 15 are formed in the mounting plates 11 above the sliding groove 13, two pressing plates 14 slide on the inner side of the sliding groove 13, supporting columns 5 penetrating through the mounting plates 11 are fixedly connected to two sides of the, the outer surface of the supporting column 5 is sleeved with an extrusion spring 16 between the pressing plate 14 and the mounting plate 11, the cross section of the pin 6 is in a T-shaped structure, the outer surface wall of the vertical end of the pin 6 is attached to the inner walls of the opposite sides of the two pressing plates 14, the outer surface wall of the horizontal end of the pin 6 is attached to the inner walls of the limiting groove 15, the outer surface wall of the vertical end of the pin 6 is attached to the inner walls of the opposite sides of the two pressing plates 14, so that the sliding of the pin 6 at the gap between the two pressing plates 14 is more stable, the outer surface wall of the horizontal end of the pin 6 is attached to the inner walls of the limiting groove 15, so that the pin 6 is fixed more stably after being embedded into the inner side of the limiting groove 15 in a sliding manner, the extrusion spring 16 extrudes the pressing plate 14 to enable the pin 6 to be more stably fixed, if the number of the pins 6 is too large, the pin 6 is downwards pulled to, at this moment, take out with stitch 6 horizontal slip can, at this moment, loosen stitch 6, it is fixed that clamp plate 14 extrudees remaining stitch 6 to the inboard of spacing groove 15 under extrusion spring 16's effect, thereby accomplish the dismantlement to stitch 6, if stitch 6 is too little, through pulling stitch 6 downwards, make stitch 6 slip to inlay out the inboard of spacing groove 15, at this moment, with stitch 6 slip to the clearance of two clamp plates 14, make stitch 6 be located the below that corresponds spacing groove 15, loosen stitch 6, clamp plate 14 extrudes remaining stitch 6 to the inboard of spacing groove 15 fixed under extrusion spring 16's effect, thereby accomplish the installation to stitch 6.
In the second embodiment, as shown in fig. 3 and 5, a plurality of groups of heat dissipation protruding fins 2 having a hemispherical cross section are fixedly connected to the outer end surface of the housing 1, a plurality of groups of flexible pads 3 are fixedly connected to the outer surface of the heat dissipation protruding fins 2, heat dissipation grooves 4 are arranged between the plurality of groups of flexible pads 3, the obstruction of the flexible pads 3 to the heat dissipation of the heat dissipation protruding fins 2 is reduced, the flexible pads 3 are made of organic silicon, and the shock absorption performance of the organic silicon material is utilized to improve the shock resistance of the low-frequency transformer through the arrangement of the flexible pads 3 made of organic silicon, and meanwhile, the organic silicon product has good electrical insulation performance, and has certain voltage resistance, arc resistance and corona resistance, so that the low-frequency transformer has certain arc prevention capability.
In the third embodiment, as shown in fig. 2, the housing 1 and the heat dissipation fins 2 are made of aluminum nitride ceramics, the bottom of the mounting plate 11 is flush with the bottom of the housing 1 in the horizontal direction, the contact area with the outside air is increased through the heat dissipation convex fins 2, the heat dissipation effect of the low-frequency transformer is improved, the heat dissipation convex fins 2 and the shell 1 are both made of aluminum nitride ceramic materials, the heat generated by the low-frequency transformer is discharged outwards through the good heat conductivity of the aluminum nitride ceramic materials, thereby improving the heat dissipation performance of the low-frequency transformer, the bottom of the mounting plate 11 is flush with the bottom of the shell 1 in the horizontal direction, ensuring that the bottom of the shell 1 can be jointed with the top of the PBC plate when in mounting, in addition, the shielding layer 10 is arranged on the inner side of the shell 1, and the good insulating property of the aluminum nitride ceramic material is utilized, so that the insulating property of the low-frequency transformer is improved while the low-frequency transformer is electromagnetically shielded.
The working principle is as follows: when the device is used, if the number of the pins 6 is too large, the pins 6 are downwards pulled to enable the pins 6 to be slidably embedded in the inner side of the limiting groove 15, at the moment, the pins 6 can be horizontally slid and taken out, at the moment, the pins 6 are loosened, the pressing plates 14 extrude the rest of the pins 6 to the inner side of the limiting groove 15 under the action of the extrusion springs 16 to be fixed, so that the dismounting of the pins 6 is completed, if the number of the pins 6 is too small, the pins 6 are downwards pulled to enable the pins 6 to be slidably embedded in the inner side of the limiting groove 15, at the moment, the pins 6 are slidably embedded in the gap between the two pressing plates 14, so that the pins 6 are located below the corresponding limiting grooves 15, the pins 6 are loosened, the pressing plates 14 extrude the rest of the pins 6 to the inner side of the limiting groove 15 to be fixed under the action of the extrusion springs 16, so that the mounting of the pins 6 is completed, the shielding layer 10 is arranged on the inner side of, the insulating property of the low-frequency transformer is improved while the low-frequency transformer is electromagnetically shielded, the contact area with the outside air is increased through the heat dissipation convex fins 2, the heat dissipation effect of the low-frequency transformer is improved, the heat dissipation convex fins 2 and the shell 1 are made of aluminum nitride ceramic materials, the heat generated by the low-frequency transformer is discharged outwards through the good heat conductivity of the aluminum nitride ceramic materials, thereby improving the heat dissipation performance of the low-frequency transformer, and the flexible pad 3 is made of organic silicon material, by arranging the flexible pad 3 made of organic silicon material, the shock-absorbing performance of the organic silicon material is utilized to improve the shock-absorbing performance of the low-frequency transformer, meanwhile, the low-frequency transformer has certain arc-proof capability by utilizing the good electrical insulation performance of the organic silicon products and certain voltage resistance, arc resistance and corona resistance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A low-frequency transformer with a built-in shielding layer comprises a shell (1) with a bottom opening structure, a framework (7), a coil (9), pins (6) and an iron core (8), and is characterized in that the shielding layer (10) is fixedly connected to the inner side of the shell (1), the framework (7) is fixedly connected to the inner side of the shielding layer (10), the iron core (8) is fixedly connected to the inner side of the framework (7), the coil (9) is arranged on the outer surface of the iron core (8), two groups of mounting plates (11) with the tops of concave structures are fixedly connected to the bottom of the framework (7), conductive plates (12) are fixedly connected to the inner sides of the tops of the mounting plates (11), a sliding groove (13) is formed in the mounting plates (11), a plurality of groups of limiting grooves (15) are formed above the sliding groove (13) in the mounting plates (11), and two pressing plates (14) slide in the sliding grooves, and the equal fixedly connected with in bottom both sides of two clamp plates (14) runs through support column (5) of mounting panel (11), the clearance department of two clamp plates (14) is provided with multiunit stitch (6) that run through mounting panel (11).
2. A built-in shield low frequency transformer according to claim 1, characterized in that the outer surface of the supporting column (5) between the press plate (14) and the mounting plate (11) is sleeved with a compression spring (16).
3. The low-frequency transformer with the built-in shielding layer as claimed in claim 1, wherein the cross section of the pin (6) is in a T-shaped structure, the outer surface wall of the vertical end of the pin (6) is attached to the inner walls of the two pressing plates (14) at the opposite sides, and the outer surface wall of the horizontal end of the pin (6) is attached to the inner walls of the limiting grooves (15).
4. The low-frequency transformer with the built-in shielding layer according to claim 1, wherein a plurality of groups of heat dissipation fins (2) with hemispherical cross sections are fixedly connected to the outer end surface of the outer shell (1).
5. The low-frequency transformer with the built-in shielding layer according to claim 4, wherein a plurality of groups of flexible pads (3) are fixedly connected to the outer surface of the heat-dissipating protruding fin (2), and heat-dissipating grooves (4) are formed among the plurality of groups of flexible pads (3).
6. A low frequency transformer with built-in shield according to claim 5, characterized in that said flexible pad (3) is made of silicone.
7. The low-frequency transformer with built-in shielding layer according to claim 4, wherein the housing (1) and the heat-dissipating fins (2) are made of aluminum nitride ceramic.
8. A built-in shield low frequency transformer according to claim 1, characterized in that the bottom of said mounting plate (11) is horizontally flush with the bottom of the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152748.2A CN110828106A (en) | 2019-11-22 | 2019-11-22 | Low-frequency transformer with built-in shielding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152748.2A CN110828106A (en) | 2019-11-22 | 2019-11-22 | Low-frequency transformer with built-in shielding layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110828106A true CN110828106A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152748.2A Withdrawn CN110828106A (en) | 2019-11-22 | 2019-11-22 | Low-frequency transformer with built-in shielding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110828106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735767A (en) * | 2021-01-22 | 2021-04-30 | 广东众西力实业有限公司 | Ultra-precise choke coil |
-
2019
- 2019-11-22 CN CN201911152748.2A patent/CN110828106A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735767A (en) * | 2021-01-22 | 2021-04-30 | 广东众西力实业有限公司 | Ultra-precise choke coil |
| CN112735767B (en) * | 2021-01-22 | 2024-05-17 | 广东众西力实业有限公司 | Ultra-precise choke coil |
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Application publication date: 20200221 |
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