CN113257533A - Electric reactor - Google Patents
Electric reactor Download PDFInfo
- Publication number
- CN113257533A CN113257533A CN202011618552.0A CN202011618552A CN113257533A CN 113257533 A CN113257533 A CN 113257533A CN 202011618552 A CN202011618552 A CN 202011618552A CN 113257533 A CN113257533 A CN 113257533A
- Authority
- CN
- China
- Prior art keywords
- coil
- inner peripheral
- axial direction
- bobbin
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 81
- 210000000078 claw Anatomy 0.000 abstract description 12
- 238000004804 winding Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01F27/2823—Wires
-
- 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
- H01F27/2876—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Transformer Cooling (AREA)
Abstract
The invention provides a reactor. A bobbin (14) constituting a reactor (10) is configured by 1 st and 2 nd holders (26, 28) that engage and cover a coil (12) in an axial direction along a winding center of the coil (12). The 1 st holder (26) has: an inner peripheral wall (30) disposed on the inner periphery of the coil (12); and 1 st and 2 nd flanges (32, 34) formed at one end and the other end in the axial direction of the inner peripheral wall (30). In the 1 st flange (32), a1 st annular portion (38) on the outer peripheral side is formed thick with respect to a1 st bridge portion (36) provided on the inner peripheral side, and a plurality of recesses (42) recessed in the axial direction are formed in the 1 st annular portion (38). An engaging hole (44) that engages with a claw portion (60) of the 2 nd holder (28) is formed in the bottom surface of the recessed portion (42), and a plurality of 1 st exposing holes (40) that expose a part of the coil (12) are provided between the 1 st bridge portions (36).
Description
Technical Field
The present invention relates to a reactor in which a coil is wound around a bobbin and housed inside a core.
Background
Conventionally, a reactor in which a coil is wound around an outer peripheral side of a bobbin is known, and for example, in a reactor disclosed in japanese patent application laid-open No. 2017-103422, the bobbin around which the coil is wound is composed of a1 st segment and a2 nd segment which are axially separable. The 1 st segment includes: a1 st cylindrical member having a rectangular cross section; a1 st flange formed at an axial end of the 1 st cylindrical member; and a1 st arm member protruding from the 1 st flange and extending along the 1 st cylinder member. On the other hand, the 2 nd segment has: a2 nd cylindrical member having a rectangular cross section; a2 nd flange formed at an axial end of the 2 nd cylindrical member; and 2 nd arm members projecting from the 2 nd flange and extending along the 2 nd cylinder member.
After winding the coil around the 1 st cylindrical member of the 1 st segment, the 2 nd cylindrical member of the 2 nd segment is inserted into the 1 st cylindrical member, and the 1 st arm member is inserted between one 2 nd arm member and the other 2 nd arm member, and the projection thereof is engaged with the projection of the 2 nd arm member, whereby the 1 st segment and the 2 nd segment are axially coupled to form the drum.
In the reactor, in the 1 st and 2 nd divided bodies, the 1 st and 2 nd arm members are provided outside the tubular member and exposed to the outside. Therefore, when the reel is housed in the core with the coil wound around the outside of the tubular member, the 1 st and 2 nd arm members come into contact with the inner wall surface of the core, or the coil expands outward and comes into contact with the 1 st and 2 nd arm members, and the engaged state is released, and the 1 st segment and the 2 nd segment may be separated.
Disclosure of Invention
A general object of the present invention is to provide a reactor capable of reliably assembling a winding drum around which a coil is wound and improving heat dissipation of the coil.
An aspect of the present invention is a reactor including: a coil wound from a wire; a bobbin member composed of a1 st bobbin and a2 nd bobbin that engage and cover the coil in an axial direction along a winding center of the coil; and a core covering an outer side of the bobbin member containing the coil, wherein,
the 1 st reel has:
an inner peripheral cylindrical portion disposed on an inner periphery of the coil; and
flanges that cover at least one of one end and the other end of the coil in the axial direction,
the 2 nd bobbin has an outer peripheral side cylindrical portion covering an outer surface of the coil,
the flange has:
an inner peripheral side flange portion connected to the inner peripheral side cylindrical portion and extending outward; and
an outer peripheral flange portion formed thicker than the inner peripheral flange portion in an axial direction and formed on an outer peripheral side with respect to the inner peripheral flange portion,
the outer peripheral flange has a plurality of recesses recessed in the axial direction, engagement holes for engaging with the 2 nd reel are formed in the bottom surfaces of the recesses, an outer peripheral cylindrical portion has engagement protrusions for engaging with the engagement holes, and the inner peripheral flange has at least 1 or more exposure holes for exposing a part of the coil.
According to the present invention, a bobbin member constituting a reactor is constituted by a1 st bobbin and a2 nd bobbin engaged in an axial direction along a winding center of a coil, the 1 st bobbin having: an inner peripheral cylindrical portion disposed on an inner periphery of the coil; and a flange that covers at least one of one end and the other end of the coil in the axial direction, wherein the 2 nd bobbin has an outer circumferential side cylindrical portion that covers an outer surface of the coil. The flange has: an inner peripheral side flange portion connected to the inner peripheral side cylindrical portion and extending outward; and an outer peripheral flange portion that is formed thicker in the axial direction than the inner peripheral flange portion and is formed on the outer peripheral side with respect to the inner peripheral flange portion, the outer peripheral flange portion being formed with a plurality of recesses that are recessed in the axial direction, an engagement hole that engages with an engagement projection formed on the outer peripheral cylindrical portion of the 2 nd drum being formed on the bottom surface of the recess, and the inner peripheral flange portion having at least 1 or more exposure holes that expose a part of the coil.
Therefore, the 1 st bobbin and the 2 nd bobbin constituting the bobbin member can be reliably coupled in the axial direction in the state where the coil is wound by engaging the engaging convex portion with the engaging hole, and the engaging convex portion is engaged in the concave portion so as not to protrude outward with respect to the flange, so that when the bobbin member around which the coil is wound is housed in the core, the engaging convex portion is prevented from coming into contact with the core and the engaged state of the 1 st bobbin and the 2 nd bobbin is prevented from being released. In addition, by forming only the outer peripheral flange portion provided with the recess portion to be thick in the flange and forming the inner peripheral flange portion facing the coil to be thin, it is possible to prevent a decrease in heat dissipation performance and to release heat of the coil to the outside through the exposure hole.
As a result, in the reactor, the engagement convex portion is engaged with the engagement hole provided in the concave portion, so that the 1 st bobbin and the 2 nd bobbin can be reliably assembled in a state in which the coil is wound, and the outer peripheral flange portion is made thicker only with respect to the thickness of the flange, and the inner peripheral flange portion facing the coil is made thinner and provided with the exposure hole, whereby the heat radiation property of the coil can be improved.
The above objects, features and advantages can be easily understood by the following description of the embodiments described with reference to the appended drawings.
Drawings
Fig. 1 is an external perspective view of a reactor according to an embodiment of the present invention.
Fig. 2 is an external perspective view of a coil assembly including a core, a coil, and a winding drum in the reactor of fig. 1.
Fig. 3 is an exploded perspective view of the coil assembly shown in fig. 2.
Fig. 4 is an exploded perspective view of the 1 st and 2 nd holders constituting the roll of fig. 2.
Fig. 5 is an overall sectional view of the reactor shown in fig. 1.
Detailed Description
As shown in fig. 1 to 5, the reactor 10 includes: a coil 12, both ends of which are drawn out from the outer peripheral side and wound in an α winding manner; a bobbin (bobbin member) 14 around which the coil 12 is wound; and a core 16 that houses the coil 12 and the bobbin 14.
The coil 12 is, for example, a conductive flat wire covered with an insulating film such as enamel, and is wound in 2 layers in the up-down direction on the outer peripheral side of the bobbin 14 by an α winding method so that its wide width is oriented in the radial direction.
Specifically, as shown in fig. 3 and 5, the coil 12 is formed with the upper layer 18 and the lower layer 20 wound plural times, respectively, and the 1 st end portion 22 as an end portion of the upper layer 18 and the 2 nd end portion 24 as an end portion of the lower layer 20 are drawn outward. Further, a portion connecting the upper layer 18 and the lower layer 20 is provided midway in the coil 12, and the upper layer 18 and the lower layer 20 are formed with the same number of turns, and the outermost diameters thereof are formed substantially the same.
Further, a1 st end portion 22 of the coil 12 as one end in the winding direction is drawn radially outward from an outermost peripheral portion on the outermost peripheral side among the winding portions of the upper layer 18 in the 2 layers, and a2 nd end portion 24 as the other end is drawn radially outward from an outermost peripheral portion on the outermost peripheral side among the winding portions of the lower layer 20 in the 2 layers, and the 1 st end portion 22 and the 2 nd end portion 24 are substantially parallel and are provided apart in the up-down direction.
As shown in fig. 2 to 5, the roll 14 is made of a resin material, and includes: a1 st holder (1 st reel) 26 that covers above and below the coil 12; and a2 nd holder (2 nd bobbin) 28 covering an outer peripheral side of the coil 12 and connected to the 1 st holder 26.
The 1 st holder 26 has: an inner peripheral wall (inner peripheral cylindrical portion) 30 having a circular cross section and extending in the axial direction (the direction of arrows a1, a 2); a1 st flange 32 formed at an upper end of the inner peripheral wall 30 and extending radially outward; and a2 nd flange 34 formed at a lower end of the inner peripheral wall 30 and extending radially outward.
The inner circumferential wall 30 is formed in a cylindrical shape extending with the same diameter in the axial direction (the direction of arrows a1, a 2), and the coils 12 are wound in layers in the vertical direction (axial direction) 2 on the outer circumferential side of the inner circumferential wall 30 (see fig. 5).
The 1 st flange 32 has: a plurality of 1 st bridge portions (inner peripheral side flange portions) 36 extending radially outward with respect to the upper end of the inner peripheral wall 30; an annular 1 st annular portion (outer peripheral side flange portion) 38 that connects outer edge portions of the 1 st bridge portion 36 to each other; and a plurality of 1 st exposure holes (exposure holes) 40 surrounded by the upper end of the inner peripheral wall 30, the 1 st bridge 36, and the 1 st annular portion 38. The 1 st bridge 36 is formed to be spaced apart from each other at equal intervals along the circumferential direction of the inner circumferential wall 30.
The 1 st annular portion 38 is formed thick in the axial direction (the arrow a1 direction) with respect to the 1 st bridge portion 36, is formed radially outward of the inner peripheral wall 30 at a predetermined distance, and is formed with a recess 42 recessed by a predetermined thickness toward the 2 nd flange 34 side (the arrow a2 direction) at a radially outward portion of the 1 st bridge portion 36. Further, engagement holes 44 elongated in the circumferential direction of the 1 st annular portion 38 are formed in the bottom of the recess 42 on the 2 nd flange 34 side. The engagement holes 44 penetrate the spool 14 in the axial direction (the direction of arrows a1, a 2), and are provided in plural numbers corresponding to the 1 st bridge 36.
A cap 46 protruding radially outward is formed on the 1 st annular portion 38 at a position between the 2 1 st bridge portions 36 adjacent to each other. The cover portion 46 is formed in a substantially rectangular shape in cross section, for example, and projects outward in the radial direction by a predetermined length from the outer periphery of the 1 st annular portion 38.
The 1 st exposure hole 40 is adjacent to the 1 st bridge 36 in the circumferential direction, is formed in an elongated hole shape at equal intervals from each other in the circumferential direction of the 1 st flange 32, and penetrates the axial direction (the direction of arrows a1, a 2).
The 2 nd flange 34 has: a plurality of 2 nd bridge parts (inner peripheral side flange parts) 48 formed at the lower end of the inner peripheral wall 30 and extending radially outward; an annular 2 nd circular part (outer peripheral flange part) 50 which connects outer edge parts of the 2 nd bridge part 48 to each other; and a plurality of 2 nd exposure holes (exposure holes) 52 surrounded by the lower end of the inner peripheral wall 30, the 2 nd bridge portion 48, and the 2 nd annular portion 50.
The 2 nd bridge portions 48 are formed at equal intervals along the circumferential direction of the inner circumferential wall 30, and the 2 nd annular portion 50 is formed at a predetermined distance radially outward from the inner circumferential wall 30.
The 2 nd exposing holes 52 are formed in a long hole shape at equal intervals from each other along the circumferential direction of the 2 nd flange 34, penetrate the axial direction (the arrow a1, a2 direction), and are arranged to face the 1 st exposing hole 40 in the axial direction.
The 1 st and 2 nd bridge parts 36, 48 and the 1 st and 2 nd annular parts 38, 50 are formed in parallel with each other at predetermined intervals in the axial direction (the direction of arrows a1, a 2) of the inner peripheral wall 30, and the 1 st and 2 nd flanges 32, 34 of the 1 st holder 26 cover the upper and lower sides of the coil 12 wound around the inner peripheral wall 30.
The 2 nd holder 28 has an outer peripheral wall (outer peripheral side cylindrical portion) 54 formed in an annular shape, and a guide portion 56 projecting radially outward from the outer peripheral wall 54, and the outer peripheral wall 54 is formed in a circular shape in cross section with substantially the same diameter as the 1 st annular portion 38 of the 1 st holder 26, and extends at a predetermined height in the axial direction (the direction of arrows a1, a 2).
The outer peripheral wall 54 is formed with a plurality of engagement pieces 58 extending upward (in the direction of arrow a 1) from the lower end thereof. The engaging pieces 58 are formed at positions and in numbers corresponding to the engaging holes 44 of the 1 st flange 32, are provided at equal intervals along the circumferential direction of the outer circumferential wall 54, and are provided to be freely tiltable in the radial direction independently of the outer circumferential wall 54. A claw portion (engaging convex portion) 60 having a triangular cross section is formed at the upper end of the engaging piece 58 so as to gradually protrude outward in the radial direction from the upper end toward the lower side (the direction of the arrow a 2).
In a state where the coil 12 is wound around the inner peripheral wall 30 of the 1 st holder 26, the upper end of the outer peripheral wall 54 of the 2 nd holder 28 is brought into contact with the 1 st annular portion 38, and the plurality of engaging pieces 58 are tilted radially inward and the claw portions 60 are inserted into the respective engaging holes 44 of the 1 st annular portion 38 and engaged therewith.
Thus, as shown in fig. 2, by the engaging action of the claw portions 60 of the engaging pieces 58 with the engaging holes 44, the 1 st holder 26 and the 2 nd holder 28 are coupled in the axial direction (the direction of arrows a1, a 2) with the coil 12 interposed therebetween and positioned in the circumferential direction, and the claw portions 60 are in a state of being accommodated in the recessed portions 42. That is, the claw portion 60 does not protrude outward in the axial direction (the direction of the arrow a 1) and the radial direction with respect to the 1 st flange 32.
In other words, the engaging hole 44 of the 1 st holder 26, the engaging piece 58 of the 2 nd holder 28, and the claw portion 60 function as a slide-in engagement mechanism capable of connecting the 1 st holder 26 and the 2 nd holder 28 in the axial direction (vertical direction, arrow a1, a2 direction).
The guide portion 56 of the 2 nd holder 28 is formed so that its cross section opening toward the 1 st holder 26 (in the direction of the arrow a 1) is U-shaped, the guide portion 56 projects radially outward from the outer peripheral wall 54 while maintaining the same cross-sectional shape, and a separation portion 62 that divides the opening into two when viewed in the axial direction of the 2 nd holder 28 is provided inside the guide portion 56. When the 1 st holder 26 is coupled to the 2 nd holder 28 so as to cover the upper portion thereof, the upper portion of the guide portion 56 is covered with the lid portion 46 of the 1 st holder 26.
The 1 st and 2 nd end portions 22 and 24 of the coil 12 wound around the inner peripheral wall 30 of the 1 st holder 26 are taken out from the lead-out groove 72 of the core 16 through the guide portion 56 and the inside to the outside (radially outside) of the cover portion 46, and are connected to target members (not shown). The upper surface of the upper layer 18 and the lower surface of the lower layer 20 are exposed in the axial direction (the direction of arrows a1 and a 2) through the 1 st exposure hole 40 opened in the 1 st flange 32 and the 2 nd exposure hole 52 opened in the 2 nd flange 34, respectively.
As shown in fig. 1, 3, and 5, the core 16 is formed of a magnetic material into a cylindrical shape that can be divided vertically (in the directions of arrows a1 and a 2), for example, and includes: a base core 64 provided at a lower portion; a cover core 66 provided so as to cover an upper portion of the base core 64; and a cylindrical spindle portion 68 formed in the center of the base core portion 64. The core 16 has a storage space 70 in which a bobbin around which the coil 12 is wound is inserted through the outer peripheral side 14 of the core shaft portion 68 and stores the bobbin around which the coil 12 is wound.
Further, a lead-out groove 72 extending outward from the housing space 70 is formed in the base core portion 64 and the cover core portion 66 constituting the core 16, the guide portion 56 of the bobbin 14 and the cover portion 46 are inserted into the lead-out groove 72, and the 1 st and 2 nd end portions 22 and 24 of the coil 12 are respectively led out to the outside through the guide portion 56.
As shown in fig. 3 and 5, the spindle portion 68 includes, for example: a plurality of divided magnetic bodies 74 formed in a disk shape and stacked in the axial direction (the direction of arrows a1, a 2); and a plurality of ceramic plates 76 provided between the adjacent divided magnetic bodies 74, and the roll 14 is provided radially at a predetermined interval in the outer peripheral side of the mandrel portion 68.
The divided magnetic bodies 74 are made of a magnetic material, the ceramic plate 76 is made of a ceramic material which is a non-magnetic material, and a gap is provided between adjacent ones of the divided magnetic bodies 74 at a predetermined interval in the axial direction.
Further, as shown in fig. 5, in the housing space 70 of the core 16, a heat sink 78 is provided at a portion of the reel 14 facing the 1 st and 2 nd flanges 32, 34. The heat sink 78 is made of, for example, a silicone-based material having high heat dissipation properties, and is provided to fill the 1 st exposure hole 40 of the 1 st flange 32 and the 2 nd exposure hole 52 of the 2 nd flange 34, whereby the heat sink 78 is in contact with the upper surface of the upper layer 18 and the lower surface of the lower layer 20 in the coil 12. In addition, the heat sink 78 is provided so as to fill also between the inner wall surface of the cover core portion 66 and the 1 st flange 32.
The coil assembly S shown in fig. 2 is configured such that the bobbin 14 around which the coil 12 is wound is inserted so that the inner peripheral wall 30 is positioned on the outer peripheral side of the core shaft portion 68 of the base core portion 64, the upper portion of the base core portion 64 is covered with the cover core portion 66, and the upper portion of the 1 st flange 32 and the lower portion of the 2 nd flange 34 are filled with the heat sink 78.
As shown in fig. 5, in this coil assembly S, the upper and lower ends of the coil 12 are exposed in the axial direction via the 1 st and 2 nd exposure holes 40, 52, the coil 12 is in contact with the heat sink 78 via the 1 st and 2 nd exposure holes 40, 52, and the heat sink 78 is in contact with the upper wall of the base core 64 and the lower wall of the cover core 66.
As described above, in the present embodiment, the bobbin 14 constituting the reactor 10 is constituted by the 1 st and 2 nd holders 26, 28 that are axially dividable, and the coil 12 is wound around the inner peripheral wall 30 of the 1 st holder 26 while the outer peripheral side of the coil 12 is covered with the 2 nd holder 28. Further, the 1 st flange 32 of the 1 st retainer 26 has: a1 st bridge 36 extending radially outward from the inner peripheral wall 30; and a1 st annular portion 38 which is formed to be thick in the axial direction with respect to the 1 st bridge portion 36 and is connected to the 1 st bridge portion 36 on the radial outer side, wherein a plurality of engaging holes 44 are formed in the 1 st annular portion 38, and the claw portions 60 of the engaging pieces 58 of the 2 nd holder 28 can be engaged with the engaging holes 44 in the recessed portion 42.
Therefore, the 1 st holder 26 and the 2 nd holder 28 constituting the reel 14 can be reliably coupled in the axial direction (the direction of arrows a1, a 2) in the state where the coil 12 is wound, by engaging the claw portions 60 of the engagement pieces 58 with the engagement holes 44, and the claw portions 60 of the engagement pieces 58 can be accommodated in the recessed portions 42 without projecting outward in the axial direction and the radial direction with respect to the 1 st flange 32 of the 1 st holder 26.
Therefore, when the coil assembly S in which the coil 12 is wound on the bobbin 14 including the 1 st holder 26 is accommodated in the accommodation space 70 of the core 16, the engagement state is prevented from being released due to the contact between the engagement piece 58 and the core 16.
As a result, in the reactor 10, the 1 st holder 26 and the 2 nd holder 28 can be reliably maintained in the coupled state in the axial direction in the state where the coil 12 is wound around the winding drum 14.
The plurality of engaging pieces 58 are provided to be tiltable in the radial direction with respect to the outer peripheral wall 54 of the 2 nd holder 28, and upper ends of the engaging pieces 58 have claw portions 60 having a triangular cross section that project outward in the radial direction. Therefore, when the 1 st holder 26 and the 2 nd holder 28 are coupled in the axial direction (the direction of arrows a1, a 2) via the engagement piece 58, the coil 12 is expanded radially outward by the rebound (repulsive force), whereby the engagement piece 58 is pressed radially outward together with the outer peripheral wall 54, and along with this, the engagement piece 58 is further moved radially outward in the engagement hole 44.
This can more reliably maintain the engagement state between the claw portion 60 of the engagement piece 58 and the engagement hole 44, and can more firmly connect the 1 st holder 26 having the engagement hole 44 and the 2 nd holder 28 having the engagement piece 58. In other words, compared to a conventional reactor in which the coil 12 expands outward and biases the first arm member and the second arm member in the direction of releasing the engagement state, the connection state can be firmly maintained by the springback of the coil 12.
In addition, in the 1 st flange 32, the 1 st bridge 36 provided with the 1 st exposure hole 40 is formed to be thin in the axial direction (the arrow a1, a2 direction) with respect to the 1 st annular portion 38. Therefore, by forming the 1 st bridge 36 facing the coil 12 to be thin, it is possible to avoid the heat radiation from the coil 12 from being hindered, and to promote the heat radiation. Further, the 1 st exposing hole 40 can be easily formed while reducing the weight by preventing the thickness of the 1 st flange 32 in the axial direction as a whole from increasing due to the provision of the 1 st bridge 36.
Further, the 1 st and 2 nd exposing holes 40 and 52 for exposing the upper and lower surfaces of the coil 12 in the axial direction are provided in the 1 st and 2 nd flanges 32 and 34, whereby the heat radiation performance of the coil 12 can be further improved.
Further, by providing the heat sink 78 for each of the 1 st and 2 nd exposure holes 40, 52, a space for providing the heat sink 78 can be easily secured, and the heat dissipation property of the coil 12 can be further improved by the heat sink 78.
The reactor of the present invention is not limited to the above embodiment, and various configurations can be adopted without departing from the gist of the present invention.
Claims (2)
1. A reactor (10) has: a coil (12) wound from a wire; a bobbin member (14) composed of a1 st bobbin (26) and a2 nd bobbin (28) that engage and cover the coil in an axial direction along a winding center of the coil; and a core (16) covering an outer side of the bobbin member containing the coil, wherein,
the 1 st reel (26) has:
an inner peripheral cylindrical portion (30) disposed on the inner periphery of the coil; and
flanges (32, 34) that cover at least one of one end and the other end of the coil in the axial direction,
the 2 nd bobbin (28) has an outer peripheral side cylindrical portion (54) covering an outer surface of the coil,
the flange has:
an inner peripheral side flange portion (36) connected to the inner peripheral side cylindrical portion and extending outward; and
an outer peripheral flange portion (38) which is formed thicker than the inner peripheral flange portion in the axial direction and is formed on the outer peripheral side with respect to the inner peripheral flange portion,
a plurality of recesses (42) recessed in the axial direction are formed in the outer peripheral flange portion, an engagement hole (44) for engaging with the 2 nd reel is formed in a bottom surface of the recesses, an engagement protrusion (60) for engaging with the engagement hole is formed in the outer peripheral cylindrical portion, and,
the inner peripheral flange has at least 1 or more exposure holes (40, 52) for exposing a part of the coil.
2. The reactor according to claim 1, wherein,
a heat sink (78) capable of dissipating heat of the coil is provided inside the exposure hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020019745A JP7186191B2 (en) | 2020-02-07 | 2020-02-07 | Reactor |
| JP2020-019745 | 2020-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113257533A true CN113257533A (en) | 2021-08-13 |
Family
ID=77180674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011618552.0A Pending CN113257533A (en) | 2020-02-07 | 2020-12-30 | Electric reactor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7186191B2 (en) |
| CN (1) | CN113257533A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0590928U (en) * | 1992-05-07 | 1993-12-10 | 東光株式会社 | High frequency transformer |
| JPH1034337A (en) * | 1996-07-30 | 1998-02-10 | Kobe Steel Ltd | Spool for welding wire |
| JPH11214232A (en) * | 1998-01-23 | 1999-08-06 | Sumitomo Wiring Syst Ltd | Internal combustion engine ignition coil |
| JP2004253732A (en) * | 2003-02-21 | 2004-09-09 | Denso Corp | Transformer and its assembling method |
| CN202126904U (en) * | 2011-05-31 | 2012-01-25 | 海尔集团公司 | Coil device of coil framework and wireless power transmission system |
| JP2015099902A (en) * | 2013-10-17 | 2015-05-28 | Ｎｅｃトーキン株式会社 | Coil component |
| JP2016190251A (en) * | 2015-03-31 | 2016-11-10 | 株式会社神戸製鋼所 | Spool around which wire is wound |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0410603A (en) * | 1990-04-27 | 1992-01-14 | Tdk Corp | Magnetic core device and manufacture thereof |
-
2020
- 2020-02-07 JP JP2020019745A patent/JP7186191B2/en active Active
- 2020-12-30 CN CN202011618552.0A patent/CN113257533A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0590928U (en) * | 1992-05-07 | 1993-12-10 | 東光株式会社 | High frequency transformer |
| JPH1034337A (en) * | 1996-07-30 | 1998-02-10 | Kobe Steel Ltd | Spool for welding wire |
| JPH11214232A (en) * | 1998-01-23 | 1999-08-06 | Sumitomo Wiring Syst Ltd | Internal combustion engine ignition coil |
| JP2004253732A (en) * | 2003-02-21 | 2004-09-09 | Denso Corp | Transformer and its assembling method |
| CN202126904U (en) * | 2011-05-31 | 2012-01-25 | 海尔集团公司 | Coil device of coil framework and wireless power transmission system |
| JP2015099902A (en) * | 2013-10-17 | 2015-05-28 | Ｎｅｃトーキン株式会社 | Coil component |
| JP2016190251A (en) * | 2015-03-31 | 2016-11-10 | 株式会社神戸製鋼所 | Spool around which wire is wound |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021125636A (en) | 2021-08-30 |
| JP7186191B2 (en) | 2022-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5711327B2 (en) | Transformer | |
| JP5544721B2 (en) | Magnetic element | |
| WO2017131123A1 (en) | Reactor, and method for producing reactor | |
| US11004590B2 (en) | Reactor having iron cores and coils | |
| JP4654680B2 (en) | Electric motor | |
| WO2017131122A1 (en) | Reactor | |
| JP6526114B2 (en) | Reactor with iron core and coil | |
| JP6557533B2 (en) | Reactor | |
| CN113257533A (en) | Electric reactor | |
| JP6261689B1 (en) | Power converter | |
| CN111540587B (en) | Coil device | |
| CN109285661B (en) | Coil device | |
| JP2015115340A (en) | Winding component | |
| CN109585137B (en) | Coil device | |
| JP7368956B2 (en) | Transformer and bobbin | |
| JP2022015803A (en) | Reactor | |
| JP7308093B2 (en) | transformer and bobbin | |
| JP2021114498A (en) | Reactor | |
| JP2020205322A (en) | Reactor | |
| WO2022249411A1 (en) | Electromagnetic device with coil case and coil case | |
| JP7214515B2 (en) | Coil device | |
| JP7249816B2 (en) | Coil device | |
| KR102625832B1 (en) | Bobbin of traction motor for polygonal coil | |
| JP2020021858A (en) | Reactor | |
| JP6936194B2 (en) | Reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220110 Address after: Ibaraki Applicant after: Hitachi astemo Co.,Ltd. Address before: Tokyo, Japan Applicant before: KEIHIN Corp. |