JP2005085919A - Core unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core unit which has a high tolerance to vibration and shock and can be easily positioned. <P>SOLUTION: A first bobbin 20 is so arranged as to stretch over one of legs of each of a first core 10 and a second core 14 which face each other when the first and second cores 10 and 14 are positioned face to face and close to each other. An engagement hole 40a formed in a bus bar 40 is engaged with an engagement projection 31 formed in part of the first bobbin 20 positioned in a space formed by the first core 10 and the second core 14. A second bobbin 50 is so engaged as to stretch over the other leg of each of the first core 10 and the second core 14, to be abutted against the bus bar 40. A first supporting tool 60 and a second supporting tool 70 are engaged with the first bobbin 20, the second bobbin 50, and the first core 10 or the second core 14 to keep the unit core 1 in an integrated body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a core unit for fixing a core for preventing generation of noise around a bus bar.

  Conventionally, there has been proposed an attachment structure for fixing a pair of cores around a bus bar in a non-contact state with the bus bar. For example, when a bus bar is fixedly disposed in a space formed when a pair of U-shaped cores are in close proximity positions, the bus bar is sandwiched between the pair of cores from above and below, and the pair of cores is supported by both arms of the support And hold the core in close proximity to each other. Next, the engagement protrusions provided on both arms of the support portion are engaged with the engagement holes formed in the bus bar to maintain the non-contact state between the bus bar and the pair of cores (for example, Patent Documents). 1).

  In some cases, a spacer and an insulating sheet are sandwiched between a pair of cores and a bus bar, and the bus bar and the pair of cores are maintained in a non-contact state by screw tightening (see, for example, Patent Document 2).

JP2002-280764 JP-A-9-134824

  However, the conventional core unit maintains the non-contact state between the bus bar and the pair of cores only with the engagement protrusion of the support and the engagement hole of the bus bar. When placed, the bus bar and the core contact each other and the core may break. In addition, since the core unit is fixed integrally by screw tightening, the screw may be loosened due to vibration and the integrity of the core unit may not be maintained. Although there was an example using a bobbin for maintaining a non-contact state between the bus bar and the pair of cores, positioning was difficult.

  Therefore, an object of the present invention is to provide a core unit that is resistant to vibration and impact and can be easily positioned.

  In order to achieve the above object, the present invention provides a U-shaped first core having a pair of legs, and a U-shaped second core having a pair of legs disposed opposite to the first core. The bus bar disposed in the space formed when the first core and the second core are in the close facing position, and the bus bar facing each other when the first core and the second core are in the close facing position When the first bobbin, which is disposed between one leg portion and a part of the first bobbin is located in the space and faces one side of the bus bar, and the first core and the second core are close to each other, Engaged with the second bobbin straddling between the other leg portions facing each other and facing the other side of the bus bar, and engaged with the first core, the second core, the first bobbin and the second bobbin. And a support member that maintains the proximity facing position, and a first engagement portion is provided on the part of the first bobbin. Vignetting, the said bus bar provides a core unit in which the second engaging portion engaging with the first engaging portion is provided.

  Here, the first engaging portion provides a core unit that is provided in a protruding shape toward the bus bar in the part of the first bobbin. At this time, the first engaging portion provides a core unit provided in a tapered shape that tapers in the bus bar direction.

  The first bobbin includes a pair of arm portions and a U-shaped base portion having a bottom portion and a pair of plate portions connecting the pair of arm portions, and is defined by the plate portions and the bottom portions. The corner portion is an inclined surface that forms a hypotenuse of a right triangle that connects the plate portion and the bottom portion, and provides a core unit on which the edge portion of the bus bar can come into contact with the inclined surface.

  In addition, a first spacer protrudes from a part of the first bobbin on the side opposite to the bus bar, and a second spacer is provided on the first core and the second core side of the second bobbin. A spacer is provided so as to protrude, and the respective front end surfaces of the one leg portions of the first core and the second core facing each other are provided so as to be able to contact the first spacer, and the first core and the second core The tip surfaces of the other leg portions of the core facing each other are provided so as to be in contact with the second spacer, thereby providing a core unit that provides a proximity facing position.

  Here, the support has a first support and a second support, and the first support is engaged with the first core, the first bobbin, and the second bobbin, and the second support. The tool engages with the second core, the first bobbin, and the second bobbin, and the first support tool and the second support tool maintain a close opposed position of the first core and the second core. A core unit is provided.

  Further, a first locking portion is provided at a portion of the first bobbin facing the second bobbin, and a second locking portion is provided at a portion of the second bobbin facing the first bobbin, When the second bobbin approaches the other side of the bus bar, the core unit is provided such that the second locking portion gets over the first locking portion.

  The present invention further includes a first core, a second core disposed opposite to the first core, and a space formed between the first core and the second core when the first core and the second core are in close proximity positions. A bus bar disposed on the first core, and when the first core and the second core are in close proximity to each other, the bus bar is related to at least one of the first part of the first core and the first part of the second core When the first bobbin, a part of which is located in the space and facing one side of the bus bar, and the first core and the second core are in close proximity to each other, the first core A second bobbin disposed so as to be associated with at least one of the second part and the second part of the second core and facing the other side of the bus bar, the first core, the second core, and the first bobbin And a support that engages with the second bobbin and maintains the close-facing position of the first core and the second core. A core unit is provided in which a part of the first bobbin is provided with a first engaging part, and the bus bar is provided with a second engaging part for engaging with the first engaging part. .

  According to the core unit of the first aspect, the first bobbin is disposed across one leg portion facing each other when the first core and the second core are in the close-facing positions, and the first bobbin The part is located in the space and faces one side of the bus bar. Further, the second bobbin is disposed across the other leg portions facing each other when the first core and the second core are in the close-facing positions, and faces the other surface side of the bus bar. Further, the support member is engaged with the first core, the second core, the first bobbin, and the second bobbin to maintain the close-facing position of the first core and the second core, and a part of the first bobbin Is provided with a first engaging portion, and the bus bar is provided with a second engaging portion that engages with the first engaging portion. This facilitates positioning of the first bobbin to be attached to the bus bar, so that the first core and the second core can be arranged at desired positions in a non-contact state with respect to the bus bar.

  According to the core unit of the second aspect, since two or more of the first bobbins are provided in a protruding shape toward the bus bar, the first bobbin is placed in a desired direction and position with respect to the bus bar. Can be installed.

  According to the core unit of the third aspect, since the first engagement portion is provided in a tapered shape tapered toward the bus bar direction, the first engagement portion and the second engagement portion are engaged. The second engaging portion is brought into contact with the tapered slope. As a result, rattling in the X, Y, and Z axial directions between the first engaging portion and the second engaging portion can be prevented, and the core can be prevented from being broken due to vibration or impact.

  According to the core unit of claim 4, the corner portion defined by the plate portion and the bottom portion is provided with an inclined surface such as an oblique side of a right triangle connecting the plate portion and the bottom portion, and the edge portion of the bus bar is provided on the inclined surface. Since contact is possible, shakiness in the X, Y, and Z axial directions between the first bobbin and the bus bar can be prevented, and destruction of the core due to vibration and impact can be prevented.

  According to the core unit of claim 5, the front end surfaces of the one leg portions of the first core and the second core facing each other are provided so as to be in contact with the first spacer, and the first core and the second core Since the respective front end surfaces of the other leg portions facing each other are provided so as to be able to contact the second spacer, when the first core and the second core are in close proximity positions, the first core and the second core A gap having an appropriate width can be formed between the cores. For this reason, a certain amount of inductance value can be obtained. Further, if the thickness of the first spacer and the second spacer is changed, it can be changed to a desired inductance value.

  According to the core unit of claim 6, the first support member is engaged with the first core, the first bobbin, and the second bobbin, and the second support member is attached to the second core, the first bobbin, and the second bobbin. Since the first and second support members engage and maintain the first and second cores in close proximity to each other, the support member is disposed near the gap formed between the first and second cores. There is nothing to do. With this configuration, since the support is not affected by the leakage magnetic flux from the gap, heat generation in the support can be prevented. Further, the urging force of the first support tool and the second support tool ensures the contact state between the first core and the second core and the first bobbin, and the gap between the first core and the second core and the first bobbin is secured. To prevent Thereby, destruction of the 1st core and the 2nd core by vibration and an impact can be prevented. Further, since the second bobbin presses the bus bar and the bus bar presses the first bobbin by the first support tool and the second support tool, the first bobbin in the direction orthogonal to the direction in which the first core and the second core face each other; Shaking of the X, Y, and Z axes between the bus bars can be prevented.

  According to the core unit of the seventh aspect, when the second bobbin approaches the other side of the bus bar, the second locking part is in a positional relationship to get over the first locking part of the first bobbin. The first bobbin and the second bobbin are not separated from each other after the second locking part has passed over the first locking part. Therefore, the first bobbin, the second bobbin, the first core, the second core, and the support can be easily attached to the bus bar.

  According to the core unit of claim 8, the first bobbin has at least one of the first part of the first core and the first part of the second core when the first core and the second core are in close proximity to each other. A part of the first bobbin is located in the space and faces one side of the bus bar. The second bobbin is disposed so as to relate to at least one of the second part of the first core and the second part of the second core when the first core and the second core are in the close-facing positions. It faces the other side. Further, the support member is engaged with the first core, the second core, the first bobbin, and the second bobbin to maintain the close-facing position of the first core and the second core, and a part of the first bobbin Is provided with a first engaging portion, and the bus bar is provided with a second engaging portion that engages with the first engaging portion. This facilitates positioning of the first bobbin to be attached to the bus bar, so that the first core and the second core can be arranged at desired positions in a non-contact state with respect to the bus bar.

A core unit according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the core unit 1 includes a first core 10, a second core 14, a first bobbin 20, a bus bar 40, a second bobbin 50, a first support 60, and a second support. 70.

  The first core 10 is U-shaped by a pair of first core legs 11 and 12 and a first core base 13 that integrally connects the pair of first core legs 11 and 12. The second core 14 is U-shaped by a pair of second core legs 15 and 16 and a second core base 17 that integrally connects the pair of second core legs. The free ends 11A and 12A of the first core legs 11 and 12 are arranged so as to face the free ends 16A and 17A of the second core legs 16 and 17, respectively.

  The first bobbin 20 includes a pair of first arm portions 21 and 22 and a first base portion 23 that connects the pair of first arm portions 21 and 22. The first arm portions 21 and 22 are U-shaped. The width W2 between the first arm portions 21 and 22 is equal to or slightly larger than the width W1 of the first core, and is a width in which one of the first core legs 11 of the first core 10 can be inserted. A first spacer 24 is provided between the first arm portions 21 and 22 at the approximate center of the first base portion 23 on the side in contact with the first core leg portion 11. The first spacer 24 protrudes in a direction away from the base portion 23, and the free ends 11 </ b> A and 15 </ b> A of the first and second core legs 11 and 15 can abut on both sides of the first spacer 24.

  The base portion 23 is U-shaped with a bottom portion 25 and a pair of plate portions 26. The corner portion defined by the bottom portion 25 and the plate portion 26 is an inclined surface 27 (FIG. 2) that forms an oblique side of a right triangle that connects the bottom portion 25 and the plate portion 26. Moreover, the 1st protrusion 28 is provided in the outer surface side of the 1st arm parts 21 and 22 near the corner | angular part by the side of the 1st core 10, respectively. The first protrusion 28 is provided in an inclined shape so as to gradually become thicker from the first core 10 side toward the second core 16 side. Similarly, the 2nd protrusion 29 is provided in the outer surface side of the 1st arm parts 21 and 22 near the corner | angular part by the side of the 2nd core 10, respectively. The second projecting portion 29 is provided in an inclined shape so as to gradually become thicker from the second core 14 side toward the first core 10 side.

  The first locking portions 30 are provided on the outer surface sides of the first arm portions 21 and 22 at positions corresponding to both ends of the pair of plate portions 26. In addition, an engagement protrusion 31 (FIG. 2) that protrudes in the opposite direction to the first spacer 24 is provided at the center of the bottom 25 opposite to the side where the first spacer 24 is provided.

  The bus bar 40 is a plate-like member extending in the width W2 direction, and edge portions 41 are defined at both ends in a direction in which the first core 10 and the second core 14 face each other. An engagement hole 40a having a size capable of inserting the engagement protrusion 31 is formed at a substantially center of the bus bar 40 in the direction in which the first core 10 and the second core 14 face each other.

  The second bobbin 50 includes a pair of second arm portions 51 and 52 and a second base portion 53 that connects the pair of second arm portions 51 and 52. The width W3 between the second arm portions 51 and 52 is equal to or slightly larger than the width W1 of the first core, and is a width that allows the first core leg portion 12 to be inserted. A second spacer 54 is provided across the second arm portions 51 and 52 in the center of the second base 53 in the direction in which the first core 10 and the second core 14 face on the bus bar 40 side. The second spacer 54 is provided so as to protrude in the direction of the bus bar 40, and the free ends 12 </ b> A and 16 </ b> A of the first and second core legs 12 and 16 can abut on both sides of the second spacer 54. .

  At the center of the second base 53 opposite to the side where the second spacer 54 is provided, the first recess 53a extends from one end to the other end in the direction in which the first core 10 and the second core 14 face each other. (FIG. 2) is formed. In the vicinity of both ends of the first recess 53a in the direction in which the first core 10 and the second core 14 face each other, a third protrusion 53A and a third protrusion 53B that protrude in the opposite direction to the second spacer 54 are provided. Yes. In addition, ribs 55 are provided on the outer surfaces of the ends of the pair of second arm portions 51 and 52 in the direction in which the first core 10 and the second core 14 face each other. Both ends of each rib 55 protrude from the edges of the second arm portions 51 and 52 to provide a second locking portion 55A. The width W4 between the pair of plate portions 26 of the first bobbin 20 is equal to or slightly larger than the width W5 of the second arm portions 51 and 52 in the direction in which the first core 10 and the second core 14 face each other. The width allows the two arms 51 and 52 to be inserted.

  The first support 60 includes a third base 61 and a first mounting portion 62 that protrudes from both longitudinal ends of the bus bar 40 at one end of the third base 61 in the longitudinal direction of the bus bar 40 and curves toward the first core 10. And a second mounting portion 63 provided to protrude from the other end of the third base portion 61 toward the first core 10. A first mounting hole 62 a for engaging with the first protrusion 28 is formed near the tip of each first mounting portion 62. A second attachment hole 63a for engaging with the third protrusion 53A is formed near the tip of the second attachment portion 63.

  The second support 70 includes a fourth base 71 and third mounting portions 72 that protrude in the longitudinal direction of the bus bar 40 from both longitudinal ends of the bus bar 40 at one end of the fourth base 71 and are curved in the direction of the second core 14. And a fourth mounting portion 73 provided to project from the other end of the fourth base portion 71 toward the second core 14. A third mounting hole 72 a for engaging with the second protrusion 29 is formed near the tip of each third mounting portion 72. Near the tip of the fourth mounting portion 73, a fourth mounting hole 73a for engaging with the third protrusion 53B is formed. Further, the corners θ of the first support tool 60 and the second support tool 70 are curved at an acute angle.

  Next, a procedure for assembling the core unit 1 including the first core 10, the second core 14, the first bobbin 20, the bus bar 40, the second bobbin 50, the first support tool 60, and the second support tool 70 described above as constituent elements. Will be described.

  First, the engagement hole 40 a of the bus bar 40 is engaged with the engagement protrusion 31 of the first bobbin 20, and the edge 41 of the bus bar 40 is brought into contact with the inclined surface 27 of the first bobbin 20. As a result, rattling between the first bobbin 20 and the bus bar 40 in the direction orthogonal to the direction in which the first bobbin 20 and the second bobbin 50 face each other can be prevented, and the first core 10 and the second bobbin 40 due to vibration or impact can be prevented. Breakage of the core 14 can be prevented. Further, the first bobbin 20 can be set at a desired position with respect to the bus bar 40 by the engagement between the engagement hole 40 a and the engagement protrusion 31.

  Next, the first bobbin 20 and the second bobbin 50 are opposed to each other so that the first locking portion 30 of the first bobbin 20 and the second locking portion 55A of the second bobbin 50 face each other, and the bus bar 40 The second bobbin 50 is moved closer to Then, the second locking portion 55A is moved over the first locking portion 30, the first bobbin 20 and the second bobbin 50 are engaged with each other, and the rib 55 of the second bobbin 50 is brought into contact with the bus bar 40. This prevents the first bobbin 20 and the second bobbin 50 from separating from each other during assembly. Therefore, the first bobbin 20, the second bobbin 50, the first core 10, the second core 14, the first support tool 60, and the second support tool 70 can be easily attached to the bus bar 40.

  Next, the first core leg portion 11 of the first core 10 is inserted between the first arm portions 21 and 22 of the first bobbin 20, and at the same time, the first core leg portion 12 of the first core 10 is connected to the first bobbin 20. It is inserted through the space formed by the second bobbin. Then, the free ends 11A and 12A of the first core 10 are brought into contact with the first spacer 24 of the first bobbin 20 and the second spacer 54 of the second bobbin 50, respectively. Similarly, the second core leg portion 15 of the second core 14 is inserted between the first arm portions 21 and 22, and at the same time, the first core leg portion 16 of the first core 10 is formed by the first bobbin 20 and the second bobbin. To be inserted into the space. Then, the free ends 16A and 17A of the second core 14 are brought into contact with the first spacer 24 of the first bobbin 20 and the second spacer 54 of the second bobbin 50, respectively. Thereby, the proximity facing position of the first core 10 and the second core 14 is determined. At this time, since a gap having a desired width is formed between the first core 10 and the second core 14 in accordance with the thickness of the first spacer 24 and the second spacer 54, a desired inductance value can be obtained.

  Next, the first support 60 engages the first protrusions 28 of the first bobbin 20 and the first mounting holes 62a of the first support 60 so as to sandwich the first core 10, and simultaneously The second mounting hole 63a of the first support tool 60 and the third protrusion 53A of the second bobbin 50 are engaged. At this time, since the first protrusion 28 is provided in an inclined shape and the corner portion θ of the first support 60 is an acute angle, the respective first attachment portions 62 of the first support 60 are spread outward. The above-described engagement is made elastically, and after the engagement, the first mounting portion 62 side of the first support 60 is brought into contact with the first core 10. Since the corner portion θ is an acute angle, the second attachment portion 63 is also elastically engaged while spreading outward. Further, since the corner portion θ of the first support 60 is an acute angle, the first mounting portion 62 side of the third base portion 61 can press the first core 10, and the second mounting portion 63 is second attached. The peripheral portion of the hole 63a can press the second bobbin 50.

  Similarly, the second support member 70 engages the respective second protrusions 29 of the first bobbin 20 and the third mounting hole 72a of the second support member 70 so as to sandwich the second core 14, and at the same time, The fourth mounting hole 73a of the support tool 70 and the third protrusion 53B of the second bobbin 50 are engaged. At this time, since the second protrusion 29 is provided in an inclined shape and the corner portion θ of the second support 70 is an acute angle, each of the third attachment portions 72 spreads outward while the above-described engagement is elastic. After the engagement, the second mounting member 72 side of the second support 70 is brought into contact with the second core 14 after engagement. Since the corner portion θ is an acute angle, the fourth mounting portion 73 is also elastically engaged while spreading outward. Further, since the corner portion θ of the second support tool 70 is an acute angle, the third mounting portion 72 side of the fourth base portion 71 can press the second core 14, and the fourth mounting portion 73 is attached to the fourth mounting portion 73. The peripheral portion of the hole 73a can press the second bobbin 50.

  As described above, the first support member 60 and the second support member 70 maintain the close and opposed positions of the first core 10 and the second core 14, so that the vicinity of the gap formed between the first core 10 and the second core 14. There is no support tool placed on the door. With this configuration, it is possible to prevent heat generation due to eddy current loss in the support due to the influence of the leakage magnetic flux spreading from the gap portion. Further, the first core 10, the second core 14, and the first bobbin 20 are brought into contact with each other by the urging force from the first mounting portion 62 side of the first support tool 60 and the third mounting portion 72 side of the second support tool 70. The state is secured, and rattling between the first core 10 and the second core 14 and the first bobbin 20 is prevented. Thereby, destruction of the 1st core 10 and the 2nd core 14 by a vibration and an impact can be prevented. Further, the second bobbin 50 presses the bus bar 40 by the urging force of the second mounting portion 63 and the fourth mounting portion 73, and ensures that the edge portion 41 of the bus bar 40 contacts the inclined surface 27.

  Therefore, rattling between the first bobbin 20 and the bus bar 40 in the direction perpendicular to the direction in which the first bobbin 20 and the second bobbin 50 face each other can be prevented, and the first core 10 and the second core due to vibration or impact can be prevented. 14 destruction can be prevented. As described above, as shown in FIGS. 3 and 4, the bus bar 40 can be disposed at a desired position in a non-contact state with the first core 10 and the second core 14 in the space formed by the first core 10 and the second core 14. .

  Next, a core unit 100 according to a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the same members as those shown in FIG. In the second embodiment, two engagement protrusions 31A and 31B corresponding to the engagement protrusion 31 of the first bobbin 20 of the first embodiment are arranged in the direction of the width W4 of the bottom portion 25 of the first bobbin 120. It protrudes approximately at the center. The engaging protrusions 31 </ b> A and 31 </ b> B are arranged in a direction orthogonal to the direction of the width W <b> 4, and are provided in a tapered shape that tapers in the direction of the second bobbin 50. Further, the inclined surface 27 provided in the first embodiment is not provided in the second embodiment.

  Engagement holes 40a1 and 40a2 corresponding to the engagement holes 40a of the bus bar 40 of the first embodiment are formed at substantially the center of the bus bar 140 in the width W4 direction. The interval between the engagement holes 40a1 and 40a2 is substantially equal to the interval between the engagement protrusions 31A and 31B of the first bobbin 120. Further, the size of the engagement holes 40a1 and 40a2 is larger than the distal end portions of the engagement protrusions 31A and 31B of the first bobbin 120 and smaller than the base end portion.

  According to the configuration of the second embodiment, when the core unit 1 is assembled, the first bobbin 120 is provided with the two engagement protrusions 31A and 31B on the first bobbin 120. Can be mounted in any desired direction and position. Further, the engagement protrusions 31A and 31B of the first bobbin 120 are provided in a tapered shape that tapers in the direction of the second bobbin 50, and the engagement holes 40a1 and 40a2 of the bus bar 140 are formed in the engagement protrusion 31A, It is formed in a size larger than the distal end portion of 31B and smaller than the proximal end portion.

  For this reason, when the engagement protrusions 31A and 31B are inserted through the engagement holes 40a1 and 40a2, the engagement holes 40a1 and 40a2 are always brought into contact with the tapered slopes of the engagement protrusions 31A and 31B. As a result, rattling between the engagement holes 40a1 and 40a2 and the engagement protrusions 31A and 31B can be prevented in the direction orthogonal to the direction in which the first bobbin 20 and the second bobbin 50 face each other. The destruction of the first core 10 and the second core 14 can be prevented.

  Next, the core unit 200 by the 3rd Embodiment of this invention is demonstrated based on FIG. In the third embodiment, the same members as those shown in FIG. In the third embodiment, two engagement protrusions 31C and 31D corresponding to the engagement protrusion 31 of the first embodiment are provided. The engagement protrusion 31 </ b> C protrudes in the direction of the second bobbin 50 while contacting the plate portion 26 from the bottom portion 25 at the corner of the bottom portion 25 of the first bobbin 220 on the second core 14 side and the first arm portion 22 side. . The engaging protrusion 31D protrudes toward the second bobbin 50 in contact with the plate portion 26 from the bottom portion 25 at the corner of the bottom portion 25 on the first core 10 side and the first arm portion 21 side.

  Engagement slits 40b1 and 40b2 of a size that can be inserted through the engagement protrusions 31C and 31D are formed in the edge portion 41 of the bus bar 240 in a slit shape, which corresponds to the engagement hole 40a of the bus bar 40 of the first embodiment. Has been. The engagement slit 40b1 is formed on the second core 14 side of the edge 41, and the engagement slit 40b2 is formed on the first core 10 side of the edge 41. The engagement slits 40b1 and 40b2 are formed at positions where the engagement protrusions 31C and 31D of the first bobbin 220 can be inserted simultaneously.

  According to the configuration of the third embodiment, since the two engagement protrusions 31C and 31D are provided on the first bobbin 220, the first bobbin 220 is attached to the bus bar 240 in a desired direction and position. The first bobbin 220 can be set at a desired position with respect to the bus bar 240.

  Next, a core unit 300 according to a fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, the same members as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted. In the fourth embodiment, the first protrusion 328 and the second protrusion 329 corresponding to the first protrusion 28 and the second protrusion 29 in the first embodiment are the first embodiment. Are provided at approximately the same position. The first protrusion 328 and the second protrusion 329 are provided in an inclined shape so as to gradually increase in thickness from the bus bar 40 side toward the first bobbin 320 side. FIG. 8 is a view of the first bobbin 320 and the second bobbin 350 as viewed from the direction A in FIG. A U-shaped second recessed portion 326 a that retreats with respect to the bus bar 40 is formed at the center of the edge of the plate portion 326 facing the bus bar 40.

  The second bobbin 350 includes a pair of second arm portions 351 and a second base portion 353 that connects the pair of second arm portions 351. Protrusions 352 are provided at both ends of the second base portion 353 in the direction in which the first core 10 and the second core 14 face each other and from the center portion in the longitudinal direction of the bus bar 40 in directions away from the second base portion 353. Yes. The protruding portion 352 protrudes by a width substantially equal to the width of the plate portion 326 in the direction in which the first core 10 and the second core 14 face each other.

  Further, the width of the protrusion 352 in the longitudinal direction of the bus bar 40 is equal to or slightly smaller than the width of the second recess 326a in the longitudinal direction of the bus bar 40, and can be inserted into the second recess 326a. A first recess 353 a is formed in the center of the second base 353 opposite to the bus bar 40 from the one end to the other end in the longitudinal direction of the bus bar 40. The second spacer 354 protrudes in the direction of the anti-bus bar 40 from one end to the other end in the longitudinal direction of the bus bar 40 at the center of the first recess 353a in the direction in which the first core 10 and the second core 14 face each other. It is installed. The free ends 12 </ b> A and 16 </ b> A of the first and second core legs 12 and 16 can abut on both sides of the second spacer 354.

  The support 360 includes a fifth base 361, a pair of first mounting portions 362, four second mounting portions 363, a pair of third mounting portions 364, and a pair of fourth mounting portions 365. The The pair of first attachment portions 362 are provided so as to protrude in the direction of the bus bar 40 from both ends of the fifth base portion 361 in the direction in which the first core 10 and the second core 14 face each other. Near the tips of the pair of first attachment portions 362, first attachment action portions 362a for pressing the first core 10 and the second core 14 are defined. The four second mounting portions 363 are provided in the vicinity of both ends of the fifth base 361 in the direction in which the first core 10 and the second core 14 face each other, and project from the both ends in the longitudinal direction of the bus bar 40 in the bus bar 40 direction. It has been. Near the tip of each second mounting portion 363, a second mounting hole 363a for engaging with the first protrusion 328 and the second protrusion 329 of the first bobbin 320 is formed.

  The pair of third attachment portions 364 are central portions in the direction in which the first core 10 and the second core 14 face each other, and project from the both ends in the longitudinal direction of the bus bar 40 in the direction of the bus bar 40. Near the tip of the third attachment portion 364, a third attachment action portion 364a for pressing the first core 10 and the second core 14 is defined. The pair of fourth mounting portions 365 are cut out in the shape of a U. The fifth base 361 has only one side on the center side in the direction in which the first core 10 and the second core 14 face each other. 361 is linked. The fourth mounting portion 365 is provided so as to be inclined in the direction of the bus bar 40, and a fourth mounting action portion 365a for pressing the first core 10 and the second core 14 is defined at the tip thereof. Yes. Further, the corner portion θ of the support 360 is curved at an acute angle.

  According to the configuration of the fourth embodiment, after the engagement hole 40a of the bus bar 40 and the engagement protrusion 31 of the first bobbin 320 are engaged, the second recess 326a of the first bobbin 20 and the second bobbin 350 are engaged. The second base 352 is engaged. At the same time, the second locking portion 55A is moved over the first locking portion 30, the first bobbin 20 and the second bobbin 50 are engaged with each other, and the second base 352 of the second bobbin 350 is connected to the bus bar 40. Abut.

  Next, after the first core 10 and the second core 14 are arranged at the close-facing positions, the support 360 is brought close to and engaged with the integrated unit. At this time, since the corner portion θ of the support 360 is an acute angle, each of the first mounting portion 362, the second mounting portion 363, the third mounting portion 364, and the fifth mounting portion 365 spreads outward while elastically engaging. Made. At the same time, the second mounting hole 363a is engaged with the first protrusion 328 and the second protrusion 329 of the first bobbin 320.

  In addition, after the engagement, the pair of first attachment action portion 362a and third attachment action portion 364a presses the first core 10 and the second core 14 so that the first core 10 and the second core 14 are in close proximity to each other. This state is maintained, and the second bobbin 350 presses the bus bar 40 through the first core 10 and the second core 14 by the urging force of the fourth mounting action portion 365a, and the edge 41 of the bus bar 40 against the inclined surface 27 Ensure contact. Therefore, rattling between the first core 10 and the second core 14 and the first bobbin 320 is prevented, so that the destruction of the first core 10 and the second core 14 due to vibration and impact can be prevented. Further, rattling between the first bobbin 320 and the bus bar 40 in the direction perpendicular to the direction in which the first bobbin 320 and the second bobbin 350 face each other can be prevented, and the first core 10 and the second core 14 are broken by vibration. Can be prevented.

  In the fourth embodiment, unlike the first embodiment in which there are two supports, the number of components of the core unit 1 can be reduced since there is one support. Assembling property can be improved. Further, as shown in FIG. 9, the bus bar 40 can be arranged in a desired position in a non-contact state with the first core 10 and the second core 14 in the space formed by the first core 10 and the second core 14.

  The core unit 1 by this invention is not limited to the form mentioned above, A various deformation | transformation and improvement are possible in the range described in the claim. For example, the shape of the first core 10 and the second core 14 is U-shaped, but is not limited to the combination of a pair of U-shaped cores, but various U-shaped, I-shaped and E-shaped cores. It can also be implemented by a combination. For example, when the U-shaped and I-shaped cores are combined, the U-shaped and I-shaped cores are related to the first bobbin 20, and the U-shaped core is related to the second bobbin 50. Alternatively, the U-shaped core may be associated with the first bobbin 20 and the I-shaped core may be associated with the second bobbin 50.

  In the third embodiment, the engagement protrusion 31C of the first bobbin 220 is provided on the second core 14 side and the engagement protrusion 31D is provided on the first core 10 side. However, both the engagement protrusions 31C and 31D are provided. You may provide in the 1st core 10 side or the 2nd core 14 side. When the positions of the engagement protrusions 31C and 31D are changed, the engagement slits 40b1 and 40b2 of the bus bar 240 are formed corresponding to the positions. Moreover, although the engagement protrusions 31C and 31D are provided at both ends in the longitudinal direction of the bus bar 240 of the bottom portion 25, they may be provided at arbitrary positions inside instead of both ends.

  Further, the engagement protrusions 31 of the first bobbin 20 in the fourth embodiment may be the engagement protrusions 31A and 31B of the second embodiment or the engagement protrusions 31C and 31D of the third embodiment. . And when it changes to engagement protrusion 31A, 31B, it changes to the bus bar 140 of 2nd Embodiment, and when it changes to engagement protrusion 31C, 31D, it changes to the bus bar 240 of 3rd Embodiment.

  Further, as shown in FIG. 10, a cut-out portion 64 for elastically pressing the first core 10 may be provided on the first mounting portion 62 side of the first support 60. In addition, the same cut-out portion may be provided on the second support tool 70 as well.

The disassembled perspective view which shows the core unit of the 1st Embodiment of this invention. The disassembled perspective view when it sees from the direction rotated 90 degrees from FIG. 1 which shows the core unit of the 1st Embodiment of this invention. The perspective view when the core unit of the 1st Embodiment of this invention is assembled and seen from the same direction as FIG. The perspective view when the core unit of the 1st Embodiment of this invention is assembled and seen from the same direction as FIG. The disassembled perspective view which shows the core unit of the 2nd Embodiment of this invention. The disassembled perspective view which shows the core unit of the 3rd Embodiment of this invention. The disassembled perspective view which shows the core unit of the 4th Embodiment of this invention. The top view of a 1st bobbin and a 2nd bobbin when it sees from A direction of FIG. The perspective view when the core unit of the 4th Embodiment of this invention is assembled and it sees from the same direction as FIG. The perspective view when the core unit of the modification of the 1st Embodiment of this invention is assembled.

Explanation of symbols

100, 200, 300, 400 core unit
10 1st core 11, 12 1st core leg part 11A, 12A, 15A, 16A Free end 14 2nd core 15, 16 2nd core leg part 20, 120, 220, 320 1st bobbin 21, 22 1st arm part 23 First base portion 24 First spacer 25 Bottom portion 26 Plate portion 27 Inclined surface 30 First locking portions 31, 31A, 31B, 31C, 31D Engaging projections 40, 140, 240 Bus bars 40a, 40a1, 40a2, 40b1, 40b2 Joint hole 41 Edge 50, 350 Second bobbin 54 Second spacer 55A Second locking part 60 First support tool 70 Second support tool 360 Support tool

Claims (8)

A U-shaped first core comprising a pair of legs,
A U-shaped second core comprising a pair of legs disposed opposite to the first core;
A bus bar disposed in a space formed when the first core and the second core are in the close-facing position, and one side facing each other when the first core and the second core are in the close-facing position A first bobbin disposed between the legs of the first bobbin, a part of which is located in the space and faces one side of the bus bar;
A second bobbin disposed across the other leg portion facing each other when the first core and the second core are in close proximity positions and facing the other surface side of the bus bar;
The first core, the second core, the first bobbin, and the second bobbin are engaged to maintain the first and second cores so as to maintain the close-facing positions of the first core and the second bobbin.
A core unit, wherein a part of the first bobbin is provided with a first engaging part, and the bus bar is provided with a second engaging part for engaging with the first engaging part. .   2. The core unit according to claim 1, wherein two or more of the first engaging portions are provided in a protruding shape toward the bus bar in the part of the first bobbin.   3. The core unit according to claim 2, wherein the first engaging portion is provided in a tapered shape that tapers in the bus bar direction.   The first bobbin includes a pair of arms and a U-shaped base having a bottom and a pair of plates connecting the pair of arms, and a corner defined by the plates and the bottom. 2. The core unit according to claim 1, wherein the core unit is an inclined surface that forms an oblique side of a right triangle that connects the plate portion and the bottom portion, and an edge portion of the bus bar can contact the inclined surface. . A first spacer protrudes from the part of the first bobbin opposite to the bus bar,
A second spacer protrudes on the first core and the second core side of the second bobbin,
The front end surfaces of the one leg portions of the first core and the second core facing each other are provided so as to be able to contact the first spacer, and the other one of the first core and the second core facing each other is arranged. 2. The core unit according to claim 1, wherein each distal end surface of the leg portion is provided so as to be able to contact the second spacer to provide a proximity facing position.   The support includes a first support and a second support, the first support is engaged with the first core, the first bobbin and the second bobbin, and the second support is the The second core, the first bobbin, and the second bobbin are engaged with each other, and the first and second support members maintain the close and opposed positions of the first core and the second core. The core unit according to claim 5.   A portion of the first bobbin facing the second bobbin is provided with a first locking portion, and a portion of the second bobbin facing the first bobbin is provided with a second locking portion, 2. The core unit according to claim 1, wherein when the two bobbins approach the other surface side of the bus bar, the second locking portion gets over the first locking portion. A first core;
A second core disposed opposite to the first core;
A bus bar disposed in a space formed between the first core and the second core when the first core and the second core are close to each other; and A first bobbin disposed to be associated with at least one of the first part of the first core and the first part of the second core, a part of which is located in the space and faces one side of the bus bar;
The first core and the second core are disposed so as to be associated with at least one of the second part of the first core and the second part of the second core when the first core and the second core are in close proximity to each other; A second bobbin facing the other side;
The first core, the second core, the first bobbin, and the second bobbin are engaged to maintain the first and second cores so as to maintain the close-facing positions of the first core and the second bobbin.
A core unit, wherein a part of the first bobbin is provided with a first engaging part, and the bus bar is provided with a second engaging part for engaging with the first engaging part. .

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