CN107993821B - Skeleton and LLC transformer - Google Patents
Skeleton and LLC transformer Download PDFInfo
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- CN107993821B CN107993821B CN201810016869.3A CN201810016869A CN107993821B CN 107993821 B CN107993821 B CN 107993821B CN 201810016869 A CN201810016869 A CN 201810016869A CN 107993821 B CN107993821 B CN 107993821B
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- 230000001154 acute effect Effects 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 51
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
Abstract
The invention relates to the technical field of power supplies, in particular to a framework and an LLC transformer, wherein the framework comprises: a main skeleton and at least one movable skeleton; the movable framework comprises a first movable framework baffle, a second movable framework baffle and a movable framework center column; a locating pin group is arranged on the movable framework and comprises at least one locating pin; the main framework comprises a first main framework baffle, a second main framework baffle and a main framework center pillar positioned between the first main framework baffle and the second main framework baffle, the movable framework center pillar is sleeved on the main framework center pillar, and the position of the movable framework can be adjusted along the length direction of the main framework center pillar; a plurality of positioning hole groups are arranged on the main framework center column, and positioning pins of the positioning pin groups are respectively accommodated in positioning holes corresponding to the positioning hole groups; the plurality of locating hole groups are distributed in the length direction of the main framework. The framework solves the technical problems that the groove width of the framework is not easy to adjust quickly, the winding difficulty is high and the leakage inductance control is not easy.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to a framework and an LLC transformer.
Background
In the application of LLC power, a transformer and a resonant inductor are often integrated together to reduce the cost and the volume, the resonant inductor is served as a leakage inductance between primary and secondary sides, at this time, the transformer is generally wound by adopting a skeleton with grooves, one or two skeleton separators are arranged on the skeleton, the primary winding and the secondary winding respectively occupy one groove or grooves on two sides of the primary winding, and the secondary winding is positioned in a middle groove. The position of the framework partition plate is changed to change the width of the primary side slot and the secondary side slot, so that the winding arrangement mode can be changed to realize the preset leakage inductance. However, for the split-slot type framework which is completed by opening the die, the position of the middle partition plate is fixed, the slot width of each section cannot be adjusted any more, the winding mode is difficult to adjust, leakage inductance is not easy to control, and the split-slot type framework is particularly inconvenient in the design and development stage. If the framework partition plate can move on the framework, the winding difficulty is increased, and the leakage inductance consistency is poor during mass production.
In view of the above, the invention has the advantages of easy adjustment of the groove width, small winding difficulty and convenient leakage inductance control.
Disclosure of Invention
The invention aims to provide a framework to solve the technical problems that the groove width of the existing framework is not easy to quickly adjust, the winding difficulty is high and leakage inductance control is not easy.
The invention provides a framework, comprising: a main skeleton and at least one movable skeleton;
the movable framework comprises a first movable framework baffle, a second movable framework baffle and a movable framework middle column positioned between the first movable framework baffle and the second movable framework baffle; a locating pin group is arranged on the movable framework, and the locating pin group comprises at least one locating pin;
the main framework comprises a first main framework baffle, a second main framework baffle and a main framework middle column positioned between the first main framework baffle and the second main framework baffle, the movable framework middle column is sleeved on the main framework middle column, and the movable framework can adjust the position along the length direction of the main framework middle column; a plurality of positioning hole groups are arranged on the main framework center column, and positioning pins of the positioning pin groups are respectively accommodated in positioning holes corresponding to the positioning hole groups; the plurality of positioning hole groups are distributed in the length direction of the main framework.
Further, the movable framework is one;
the movable framework comprises a first arc-shaped part and a second arc-shaped part which are separated, and the first arc-shaped part and the second arc-shaped part can be spliced and sleeved on the outer side of the middle column of the main framework;
the first arc-shaped part comprises a first arc-shaped baffle plate, a second arc-shaped baffle plate and a first arc-shaped center column positioned between the first arc-shaped baffle plate and the second arc-shaped baffle plate;
the second arc-shaped part comprises a third arc-shaped baffle plate, a fourth arc-shaped baffle plate and a second arc-shaped center pillar positioned between the third arc-shaped baffle plate and the fourth arc-shaped baffle plate;
and the positioning pin group is arranged on the first arc-shaped part or/and the second arc-shaped part.
Further, the positioning pin group is arranged on the inner wall of the first arc-shaped middle column or/and the inner wall of the second arc-shaped middle column.
Further, the first arcuate center post includes opposed first and second sides; the second arcuate center post includes a third side capable of contacting the first side and a fourth side capable of contacting the second side,
the first side surface and the third side surface are clamped through concave-convex surface matching or/and the second side surface and the fourth side surface are clamped through concave-convex surface matching.
Further, a plurality of first protruding blocks are arranged on the first side face, a plurality of second grooves are arranged on the second side face, and the plurality of first protruding blocks and the plurality of second grooves are arranged along the length direction of the first arc-shaped middle column;
the third side is provided with a plurality of first grooves used for being clamped with the first convex blocks, the fourth side is provided with a plurality of second convex blocks used for being clamped with the second grooves, and the first grooves and the second convex blocks are all arranged along the length direction of the second arc-shaped center pillar.
Further, the first convex block comprises a first convex surface and a second convex surface, the first convex surface and the second convex surface of the first convex block are respectively connected with the first side surface of the arc-shaped center pillar, and an included angle between the first convex surface and the second convex surface of the first convex block and the first side surface of the arc-shaped center pillar is an acute angle; the shape of the first bump is the same as the shape of the inner cavity of the first groove;
the second convex block comprises a third convex surface and a fourth convex surface, the third convex surface and the fourth convex surface of the second convex block are respectively connected with the fourth side surface of the arc-shaped center pillar, and an included angle between the third convex surface and the fourth convex surface of the second convex block and the fourth side surface of the arc-shaped center pillar is an acute angle; the shape of the second bump is the same as the shape of the inner cavity of the second groove.
Further, when the first arc-shaped part or the second arc-shaped part is provided with the positioning pin group, a plurality of positioning hole groups are arranged in a row along the length direction of the main framework center column;
when the positioning pin groups are arranged on the first arc-shaped part and the second arc-shaped part, the positioning hole groups comprise a first row of groups and a second row of groups, and the positioning hole groups of the first row of groups are used for being matched with the positioning pin groups of the first arc-shaped part after being spliced; and the positioning hole group of the second row of groups is used for being matched with the positioning pin group of the second arc-shaped part after being spliced.
Further, the plurality of positioning hole groups comprise a plurality of positioning row groups, and the plurality of positioning row groups are distributed along the circumferential direction of the main framework center column;
each positioning row group comprises at least one positioning hole group, the positioning hole groups of the positioning row groups are arranged in a row along the length direction of the middle column of the main framework, and the connecting lines of the positioning hole groups corresponding to the adjacent two positioning row groups are inclined lines.
Further, the length of the locating pin is not greater than the thickness of the column wall of the main framework.
Further, the framework further comprises adhesive tapes, and the adhesive tapes encircle the outer side walls of the first arc-shaped middle column and the second arc-shaped middle column.
Further, a first gap for a wire is arranged between the first arc-shaped baffle plate and the third arc-shaped baffle plate; a second gap for the wire is provided between the second and fourth arcuate baffles.
Compared with the prior art, the invention has the beneficial effects that:
according to the framework provided by the invention, the movable framework is sleeved on the main framework center column, so that a plurality of winding grooves can be formed among the first main framework baffle, at least one movable framework and the second main framework baffle, and a winding can be wound in each winding groove; the movable frameworks can adjust positions along the length direction of the main framework center column, the slot width of a winding slot formed between two adjacent movable frameworks can be flexibly adjusted, or the slot width of a winding slot formed by the movable frameworks and a first main framework baffle or a movable framework and a second main framework baffle can be flexibly adjusted, so that the winding arrangement mode can be adjusted according to the requirement to realize the preset leakage inductance; and the positioning pin group is matched with the corresponding positioning hole group to realize positioning, so that the position of the movable framework is ensured to be unchanged.
According to the invention, the movable framework is sleeved on the main framework center column, so that the width of the winding groove can be flexibly adjusted, and the winding mode and leakage inductance can be changed very conveniently; and through locating pin and locating hole cooperation, the position of spacing movable skeleton makes movable skeleton fixed in position, and the wire winding is more convenient, and the winding side stress that first movable skeleton baffle and second movable skeleton baffle can bear is stronger, and the winding is difficult for warping, and the sense uniformity is good.
The invention aims to provide an LLC transformer so as to solve the technical problems that the slot width of the existing framework is not easy to quickly adjust, the winding difficulty is high and leakage inductance control is not easy.
The LLC transformer provided by the invention comprises a magnetic core and a framework; the main skeleton of skeleton includes the centre bore, the magnetic core sets up in the centre bore.
Compared with the prior art, the invention has the beneficial effects that:
according to the LLC transformer provided by the invention, the magnetic core is arranged in the central hole of the main framework, so that the magnetic core acts with the windings in the winding grooves of the framework to generate an electromagnetic field; the structure and the beneficial effects of the skeleton have been described in detail, and are not described here again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a skeleton according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a main skeleton in a skeleton provided in an embodiment of the present invention;
FIG. 3 is an exploded view of a framework provided in an embodiment of the present invention;
fig. 4 is a schematic structural view of a first arc portion in a skeleton according to an embodiment of the present invention;
FIG. 5 is a schematic view of a main skeleton positioning hole in a skeleton according to an embodiment of the present invention
FIG. 6 is a schematic diagram of a slot width adjustment of a skeleton provided by an embodiment of the present invention, in which two wire winding slots are provided;
fig. 7 is another schematic view of adjusting the slot width of the skeleton according to an embodiment of the present invention, in which three wire winding slots are provided.
Icon: 100-a main framework; 200-an active framework; 300-a central hole; 400-a first wire winding groove; 110-a first main frame baffle; 120-a second main frame baffle; 130-main framework center; 140-positioning holes; 141-a first positioning hole; 142-second positioning holes; 143-a third positioning hole; 144-fourth locating holes; 210-a first arcuate portion; 211-a first arc baffle; 212-a second arcuate baffle; 213-a first arcuate center post; 214-a first side; 215-a second side; 220-first bumps; 221-a first convex surface; 222-a second convex surface; 230-a second groove; 240-a second arcuate portion; 241-a third arcuate baffle; 242-fourth arcuate baffles; 243-a second arcuate center post; 244-third side; 245-fourth side; 250-a first groove; 260-second bump; 270-locating pins; 280-a first gap; 281-second gap; 410-a second wire winding slot; 420-third wire winding groove.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 and 2, the skeleton provided by the present invention includes: a main skeleton 100 and at least one movable skeleton 200; the movable frame 200 comprises a first movable frame baffle, a second movable frame baffle and a movable frame center pillar positioned between the first movable frame baffle and the second movable frame baffle; as shown in fig. 4, a positioning pin group is provided on the movable frame 200, the positioning pin group including at least one positioning pin 270; the main framework 100 comprises a first main framework baffle 110, a second main framework baffle 120 and a main framework middle column 130 positioned between the first main framework baffle 110 and the second main framework baffle 120, wherein the movable framework middle column is sleeved on the main framework middle column 130, and the position of the movable framework 200 can be adjusted along the length direction of the main framework middle column 130; a plurality of positioning hole groups are arranged on the main framework center column 130, and positioning pins 270 of the positioning pin groups are respectively accommodated in positioning holes 140 corresponding to the positioning hole groups; the plurality of positioning hole groups are distributed in the length direction of the main frame 100.
The skeleton provided in this embodiment, by sleeving the movable skeleton 200 on the main skeleton center post 130, enables a plurality of winding grooves to be formed among the first main skeleton baffle 110, at least one movable skeleton 200 and the second main skeleton baffle 120, and windings can be wound in each winding groove; the movable frameworks 200 can adjust positions along the length direction of the main framework center column 130, so that the slot width of a wire winding slot formed between two adjacent movable frameworks 200 can be flexibly adjusted, or the slot width of the wire winding slot formed between the movable frameworks 200 and the first main framework baffle 110 or between the movable frameworks 200 and the second main framework baffle 120 can be flexibly adjusted, and the winding arrangement mode can be adjusted according to the requirement so as to realize the preset leakage inductance; and the positioning pin group is matched with the corresponding positioning hole group to realize positioning, so that the position of the movable framework 200 is ensured to be unchanged.
In the embodiment, the movable framework 200 is sleeved on the main framework middle column 130, so that the slot width of the winding slot can be flexibly adjusted, and the winding mode and leakage inductance can be changed very conveniently; and, through locating pin 270 and locating hole 140 cooperation, the position of spacing movable skeleton 200 makes movable skeleton 200 fixed in position, and the wire winding is more convenient, and the winding side stress that first movable skeleton baffle and second movable skeleton baffle can bear is stronger, and the winding is difficult for warping, and the sense uniformity is good.
It should be noted that, one, two or more movable skeletons 200 may be provided, and the number of the grooves is determined according to the need. In this embodiment, as shown in fig. 1, the movable skeleton 200 is one. At this time, the movable frame 200 is engaged with the main frame 100 to form two or three winding grooves.
The movable frame 200 has various structures, for example, the movable frame 200 includes a first arc portion 210 and a second arc portion 240 that are hinged, and the movable frame 200 is sleeved on the outer side of the main frame center pillar 130 by connecting the free end of the first arc portion 210 and the free end of the second arc portion 240. In this embodiment, as shown in fig. 3, the movable frame 200 includes a first arc portion 210 and a second arc portion 240 that are separated, and the first arc portion 210 and the second arc portion 240 can be spliced to be sleeved outside the main frame center pillar 130; the first arc portion 210 includes a first arc baffle 211, a second arc baffle 212, and a first arc center pillar 213 located between the first arc baffle 211 and the second arc baffle 212; the second arc part 240 includes a third arc baffle 241, a fourth arc baffle 242, and a second arc center post 243 between the third arc baffle 241 and the fourth arc baffle 242; and a set of alignment pins are provided on the first arc portion 210 or/and the second arc portion 240. That is, when the movable frame 200 is mounted to the main frame center pillar 130, the first and second arc portions 210 and 240 are mounted to the main frame center pillar 130, respectively, in such a manner that the mounting is convenient; the positioning pin group is arranged on the first arc-shaped portion 210 or the second arc-shaped portion 240, so that the positioning pins 270 of the positioning pin group of the first arc-shaped portion 210 or the second arc-shaped portion 240 are engaged with the positioning holes 140 corresponding to the positioning hole group, and the positioning pins are spliced to realize positioning of the first arc-shaped portion 210 or the second arc-shaped portion 240 and prevent the first arc-shaped portion 210 or the second arc-shaped portion 240 from moving. It should be noted that, the first arc baffle 211 and the third arc baffle 241 are spliced to form a first movable skeleton baffle, the second arc baffle 212 and the fourth arc baffle 242 are spliced to form a second movable skeleton baffle, and the first arc center column 213 and the second arc center column 243 are spliced to form a movable skeleton center column. In addition, the shapes of the first and second arc portions 210 and 240 may not be strictly arc-shaped as long as the movable frame 200 can be stably assembled to the main frame 100.
It should be noted that, the first arc-shaped portion 210 and the second arc-shaped portion 240 may be symmetrically disposed or may be asymmetrically disposed, and in this embodiment, as shown in fig. 3, the first arc-shaped portion 210 and the second arc-shaped portion 240 are symmetrically disposed.
It should be noted that there are various positions of the positioning pin group, for example, the positioning pin group is disposed on the inner wall of the first movable skeleton guard or the second movable skeleton guard, in this embodiment, the positioning pin 270 is disposed on the inner wall of the movable skeleton center pillar, specifically, as shown in fig. 4, the positioning pin group is disposed on the inner wall of the first arc-shaped center pillar 213 or/and the inner wall of the second arc-shaped center pillar 243. When the set of positioning pins includes two positioning pins 270, the two positioning pins 270 are disposed at both ends of the inner wall of the first arc-shaped center pillar 213 or both ends of the inner wall of the second arc-shaped center pillar 243, respectively; of course, one positioning pin 270 may be provided at both ends of the inner wall of the first arc-shaped center pillar 213 and both ends of the inner wall of the second arc-shaped center pillar 243. It should be noted that the positioning pins 270 of the positioning pin group are not limited to two, but may be one, three or other numbers.
In the present embodiment, the positioning is achieved by inserting the positioning pins 270 into the positioning holes 140, wherein, as shown in fig. 5, when the first arc-shaped portion 210 or the second arc-shaped portion 240 is provided with the positioning pin groups, the plurality of positioning hole groups are arranged in a row along the length direction of the main frame center post 130; when the first arc-shaped portion 210 and the second arc-shaped portion 240 are both provided with the positioning pin groups, the positioning hole groups comprise a first row group and a second row group, and the positioning hole groups of the first row group are used for being matched with the positioning pin groups of the spliced first arc-shaped portion 210; the positioning hole set of the second row set is used for matching with the positioning pin set of the spliced second arc-shaped portion 240. As shown in fig. 5, a positioning pin group is provided at the first arc portion 210, the positioning pin group includes two positioning pins 270, and a row of positioning holes 140 is provided on the main skeleton middle column 130, wherein the first positioning holes 141 and the third positioning holes 143 are a group of positioning hole groups, and the second positioning holes 142 and the fourth positioning holes 144 are a group of positioning hole groups; when the two positioning pins 270 of the first arc-shaped portion 210 are respectively accommodated in the first positioning hole 141 and the third positioning hole 143, the movable frame 200 forms three accommodating grooves at the middle position of the main frame center pillar 130, namely, a second winding groove 410 formed by the first main frame baffle 110 and the first movable frame baffle, a first winding groove 400 formed by the first movable frame baffle and the second movable frame baffle, and a third winding groove 420 formed by the second movable frame baffle and the second main frame baffle 120, as shown in fig. 7; when the two positioning pins 270 of the first arc-shaped portion 210 are respectively received in the second positioning hole 142 and the fourth positioning hole 144, the second movable skeleton plate of the movable skeleton 200 abuts against the second main skeleton plate 120 to form two receiving grooves, namely, a second winding groove 410 formed by the first main skeleton plate 110 and the first movable skeleton plate, and a first winding groove 400 formed by the first movable skeleton plate and the second movable skeleton plate, as shown in fig. 6.
Because the positioning holes 140 have a certain width, the number of the positioning holes 140 arranged in a row along the length direction of the main frame center pillar 130 is limited, and the adjustable precision of the relative widths of the wire winding grooves formed by the first main frame baffle 110 and the first movable frame baffle and the wire winding grooves formed by the second main frame baffle 120 and the second movable frame baffle is limited. Thus, in the present embodiment, the plurality of positioning hole groups include a plurality of positioning row groups distributed along the circumferential direction of the main frame center pillar 130; each positioning row group comprises at least one positioning hole group, the positioning hole groups of the positioning row groups are arranged in a row along the length direction of the main framework center column 130, and the connecting lines of the positioning hole groups corresponding to the two adjacent positioning row groups are inclined lines. This minimizes the position of the adjustable movable frame 200 when the length position of the main frame center pillar 130 is adjusted, thereby being more accurate.
In addition, as shown in fig. 3 and 4, the first arcuate center post 213 includes opposed first and second sides 214 and 215; the second arc-shaped center post 243 includes a third side 244 capable of contacting the first side 214 and a fourth side 245 capable of contacting the second side 215, wherein the connection mode of the first side 214 and the third side 244 and the connection mode of the second side 215 and the fourth side 245 are both engaged by concave-convex surface matching, or the connection mode of the first side 214 and the third side 244 or the connection mode of the second side 215 and the fourth side 245 is engaged by concave-convex surface matching. Through the connection of the concave-convex surfaces, the stability of the movable skeleton 200 can be enhanced, and the relative movement of the first arc-shaped portion 210 and the second arc-shaped portion 240 along the length direction of the main skeleton center pillar 130 can be reduced or even avoided.
In order to improve the stabilizing effect, in the present embodiment, as shown in fig. 3 and 4, a plurality of first protrusions 220 are disposed on the first side 214, a plurality of second grooves 230 are disposed on the second side 215, and the plurality of first protrusions 220 and the plurality of second grooves 230 are disposed along the length direction of the first arc-shaped center pillar 213; the third side 244 is provided with a plurality of first grooves 250 for being engaged with the first protrusions 220, the fourth side 245 is provided with a plurality of second protrusions 260 for being engaged with the second grooves 230, and the first grooves 250 and the second protrusions 260 are all arranged along the length direction of the second arc-shaped center pillar 243.
It should be noted that, the number of the first bumps 220 and the second bumps 260 is determined according to the length of the pillar in the movable skeleton, and the number of the first grooves 250 and the first bumps 220 are the same, and the number of the second grooves 230 and the second bumps 260 are the same. In this embodiment, there may be only the first bump 220 and the first groove 250 spliced thereto.
In order to make the first arc-shaped portion 210 and the second arc-shaped portion 240 not easy to fall off and separate from each other, further, as shown in fig. 3 and fig. 4, the first bump 220 includes a first convex surface 221 and a second convex surface 222, the first convex surface 221 and the second convex surface 222 of the first bump 220 are respectively connected with the first side surface 214 of the arc-shaped center pillar, and an included angle between the first convex surface 221 and the second convex surface 222 of the first bump 220 and the first side surface 214 of the arc-shaped center pillar is an acute angle; the shape of the first bump 220 is the same as the shape of the inner cavity of the first groove 250; that is, the first bump 220 can be clamped in the first groove 250, and the width of the opening of the first groove 250 is smaller than the width of the bottom of the first bump 220, so that the first bump 220 is not easy to separate from the first groove 250. Similarly, the second bump 260 includes a third convex surface and a fourth convex surface, the third convex surface and the fourth convex surface of the second bump 260 are respectively connected with the fourth side 245 of the arc-shaped center pillar, and an included angle between the third convex surface and the fourth convex surface of the second bump 260 and the fourth side 245 of the arc-shaped center pillar is an acute angle; the shape of the second bump 260 is the same as the shape of the inner cavity of the second recess 230.
It should be noted that the shapes of the first bump 220 and the second bump 260 are various, such as a circle, a T-shape, or a trapezoid. In this embodiment, as shown in fig. 3, the first bump 220 and the second bump 260 are both trapezoidal in shape. Correspondingly, the shape of the cavity of the first recess 250 matches the shape of the first bump 220, and the shape of the cavity of the second recess 230 matches the shape of the second bump 260.
It should be noted that, since the core needs to be inserted into the central hole 300 of the main frame middle post 130, the length of the positioning pin 270 on the first arc-shaped portion 210 or the second arc-shaped portion 240 is not greater than the thickness of the post wall of the main frame middle post 130. That is, when the positioning pin 270 is received in the positioning hole 140, the positioning pin 270 does not extend into the central hole 300 through the column wall of the main frame 100, so that the magnetic core can be smoothly assembled in the central hole 300 of the main frame middle column 130.
In order to make the combined structure of the first and second arc-shaped portions 210 and 240 more stable, the frame further includes an adhesive tape surrounding the outer sidewalls of the first and second arc-shaped center posts 213 and 243. This allows the first and second arcuate portions 210 and 240 to be formed as a single piece.
In addition, as shown in fig. 7, a first gap 280 for the wire is provided between the first and third arc baffles 211 and 241; a second gap 281 for the wire is provided between the second arcuate flap 212 and the fourth arcuate flap 242. The winding on the bobbin can pass through the first arc portion 210 baffle or the second arc portion 240 baffle of the movable bobbin 200 through the first gap 280 or the second gap 281.
Example two
The LLC transformer provided by the embodiment comprises a magnetic core and a framework; the main frame 100 of the frame includes a central hole 300, and a magnetic core is disposed in the central hole 300.
In the LLC transformer provided in this embodiment, the magnetic core is disposed in the central hole 300 of the main bobbin 100, so that the magnetic core acts on the windings in the winding slots of the bobbin to generate an electromagnetic field; the structure and the beneficial effects of the skeleton have been described in detail, and are not described here again.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (11)
1. A skeleton, comprising:
at least one movable framework, at least one of the movable frameworks comprising a first movable framework baffle, a second movable framework baffle, and a movable framework center post positioned between the first movable framework baffle and the second movable framework baffle; a locating pin group is arranged on the movable framework, and the locating pin group comprises at least one locating pin;
the main framework comprises a first main framework baffle, a second main framework baffle and a main framework center pillar positioned between the first main framework baffle and the second main framework baffle, the movable framework center pillar is sleeved on the main framework center pillar, and the movable framework can adjust the position along the length direction of the main framework center pillar; a plurality of positioning hole groups are arranged on the main framework center column, and positioning pins of the positioning pin groups are respectively accommodated in positioning holes corresponding to the positioning hole groups; the plurality of positioning hole groups are distributed in the length direction of the main framework;
the positioning hole groups comprise a plurality of rows of positioning row groups, and the plurality of rows of positioning row groups are distributed along the circumferential direction of the main framework center column;
each positioning row group comprises at least one positioning hole group, the positioning hole groups of the positioning row groups are arranged in a row along the length direction of the middle column of the main framework, and the connecting lines of the positioning hole groups corresponding to the adjacent two positioning row groups are inclined lines.
2. The armature of claim 1, wherein the movable armature is one;
the movable framework comprises a first arc-shaped part and a second arc-shaped part which are separated, and the first arc-shaped part and the second arc-shaped part can be spliced and sleeved on the outer side of the middle column of the main framework;
the first arc-shaped part comprises a first arc-shaped baffle plate, a second arc-shaped baffle plate and a first arc-shaped center column positioned between the first arc-shaped baffle plate and the second arc-shaped baffle plate;
the second arc-shaped part comprises a third arc-shaped baffle plate, a fourth arc-shaped baffle plate and a second arc-shaped center pillar positioned between the third arc-shaped baffle plate and the fourth arc-shaped baffle plate;
and the positioning pin group is arranged on the first arc-shaped part or/and the second arc-shaped part.
3. The armature of claim 2, wherein the set of locating pins are provided on an inner wall of the first arcuate center post or/and an inner wall of the second arcuate center post.
4. The armature of claim 2, wherein the first arcuate center post includes opposed first and second sides; the second arcuate center post includes a third side capable of contacting the first side and a fourth side capable of contacting the second side,
the first side surface and the third side surface are clamped through concave-convex surface matching or/and the second side surface and the fourth side surface are clamped through concave-convex surface matching.
5. The armature of claim 4, wherein a plurality of first projections are disposed on the first side and a plurality of second recesses are disposed on the second side, and wherein a plurality of first projections and a plurality of second recesses are disposed along a length of the first arcuate center post;
the third side is provided with a plurality of first grooves used for being clamped with the first convex blocks, the fourth side is provided with a plurality of second convex blocks used for being clamped with the second grooves, and the first grooves and the second convex blocks are all arranged along the length direction of the second arc-shaped center pillar.
6. The armature of claim 5, wherein the first projection comprises a first convex surface and a second convex surface, the first convex surface and the second convex surface of the first projection are respectively connected with the first side surface of the first arc-shaped center pillar, and an included angle between the first convex surface and the second convex surface of the first projection and the first side surface of the first arc-shaped center pillar is an acute angle; the shape of the first bump is the same as the shape of the inner cavity of the first groove;
the second convex block comprises a third convex surface and a fourth convex surface, the third convex surface and the fourth convex surface of the second convex block are respectively connected with the fourth side surface of the second arc-shaped middle column, and the included angles between the third convex surface and the fourth convex surface of the second convex block and the fourth side surface of the second arc-shaped middle column are acute angles; the shape of the second bump is the same as the shape of the inner cavity of the second groove.
7. The skeleton of claim 2, wherein when the first arc-shaped portion or the second arc-shaped portion is provided with the positioning pin group, a plurality of the positioning hole groups are arranged in a row along a length direction of the main skeleton center pillar;
when the positioning pin groups are arranged on the first arc-shaped part and the second arc-shaped part, the positioning hole groups comprise a first row of groups and a second row of groups, and the positioning hole groups of the first row of groups are used for being matched with the positioning pin groups of the first arc-shaped part after being spliced; and the positioning hole group of the second row of groups is used for being matched with the positioning pin group of the second arc-shaped part after being spliced.
8. The armature of any one of claims 1-6, wherein the dowel pin has a length that is no greater than a thickness of a column wall of the primary armature.
9. The armature of any one of claims 2-6, further comprising an adhesive tape that surrounds the outer sidewalls of the first and second arcuate center posts.
10. The armature of any one of claims 2-6, wherein the first arcuate baffle and the third arcuate baffle have a first gap therebetween for a wire; a second gap for the wire is provided between the second and fourth arcuate baffles.
11. An LLC transformer comprising a core and a skeleton as claimed in any of claims 1-10; the main skeleton of skeleton includes the centre bore, the magnetic core sets up in the centre bore.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016869.3A CN107993821B (en) | 2018-01-08 | 2018-01-08 | Skeleton and LLC transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016869.3A CN107993821B (en) | 2018-01-08 | 2018-01-08 | Skeleton and LLC transformer |
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| CN107993821A CN107993821A (en) | 2018-05-04 |
| CN107993821B true CN107993821B (en) | 2023-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110690031B (en) * | 2019-10-16 | 2021-09-10 | 广东美的厨房电器制造有限公司 | Transformer framework, transformer and electric equipment |
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| CN107993821A (en) | 2018-05-04 |
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