JP2018182218A - Fixing structure for electromagnetic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure 1 for an electromagnetic apparatus 2 capable of surely fixing a position of an electromagnetic apparatus 2, reducing a mechanical load that is applied to the electromagnetic apparatus 2, and reducing a possibility of damage of the electromagnetic apparatus 2.SOLUTION: The fixing structure 1 for the electromagnetic apparatus 2 comprises a base 3, the electromagnetic apparatus 2, a sidewall part 4, a resin member 5 and a spring member 6. The electromagnetic apparatus 2 is disposed on a mounting surface 11 of the base and includes two cores 15 and coils 16. The two cores 15 and coils 16 are combined in a direction that is vertical to the mounting surface 11. The sidewall part 4 is formed while extending from the mounting surface 11 vertically to the mounting surface 11. Further, the sidewall part 4 also defines an internal space 12 in which the electromagnetic apparatus 2 is disposed. The resin member 5 is disposed in contact with the sidewall part 4 and the electromagnetic apparatus 2 in multiple inner wall portions 13 facing the internal space 12 in the sidewall part 4. The spring member presses the electromagnetic apparatus 2 that is disposed in the internal space 12, onto the base in the direction that is vertical to the mounting surface 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fixed structure of an electromagnetic device for fixing the position of the electromagnetic device.

  As a prior art, there is known a technique for supporting a core with respect to a case by providing a core, a coil and a case, and filling potting resin between the core and the coil and the bottom wall of the case (for example, Patent Document 1) reference). In addition, there is known a technology including a coil device, a base and a bracket, the coil device being disposed on the upper surface of the base, and the bracket pressing the coil device against the base when the bracket is fixed (see, for example, Patent Document 2) ).

  Further, a technique is known which comprises an inductance element, a plate spring and a base member, and the plate spring fixes the inductance element to the base member by a ceiling portion and a locking piece (see, for example, Patent Document 3). In this technique, the ceiling of the leaf spring presses the inductance element against the base member by screwing the foot of the leaf spring to the base. The locking piece of the plate spring projects from the position between the ceiling and the foot to the side of the inductance element, and the plate spring holds the inductance element so as to be held by the ceiling and the locking piece.

JP, 2010-147130, A Unexamined-Japanese-Patent No. 2004-335781 Unexamined-Japanese-Patent No. 2004-296818

  For example, in the technique of Patent Document 1, there is a problem that when the potting resin is thermally expanded, the core may be cracked. Further, in the technique of Patent Document 2, the bracket presses the coil device against the base by spring biasing, thereby holding the coil device. Thus, the direction in which the coil arrangement can be directly positioned is limited to the direction of the spring bias and must rely on frictional forces for positioning and holding in other directions. In order to realize a sufficiently large frictional force, it is necessary to set a large pressing force by the spring biasing, and when the pressing force by the spring biasing is large, the coil device is easily damaged. There is a point.

  Further, in the technique of Patent Document 3, the inductance element is gripped not only by the base portion and the ceiling portion in the vertical direction but also by the locking pieces of the plate spring in the lateral direction perpendicular to the vertical direction. In such a configuration, since the leaf spring presses the inductance element by spring biasing, there is a problem that the work of incorporating the inductance element inside the leaf spring is not easy.

  Also, when the inductance element is attached to the base, the ceiling of the leaf spring may be deformed, which may cause deformation or displacement of the locking piece. Furthermore, there are dimensional differences and shape differences between the plurality of inductance elements. Therefore, the pressure applied from the plate spring to the inductance element differs depending on the individual inductance element or the position of the inductance element. Thus, due to the deformation of the leaf spring and the difference in size and shape of the inductance element itself, the mechanical load that the inductance element receives from the leaf spring may be biased. When the load from the leaf spring is biased, there is a problem that the local load easily causes breakage of the inductance element.

  SUMMARY OF THE INVENTION The object of the present invention is to fix an electromagnetic device, which can fix the position of the electromagnetic device easily and reliably, reduce the mechanical load applied to the electromagnetic device, and reduce the possibility of damage to the electromagnetic device. It is to provide a structure.

  The fixed structure of the electromagnetic device according to the present invention comprises a base on which a planar mounting surface is formed, two cores disposed on the mounting surface, and combined in a direction perpendicular to the mounting surface. And a side wall portion extending vertically from the mounting surface of the base to the mounting surface and defining an internal space in which the electromagnetic device is disposed, and the inside of the side wall portion. In the plurality of inner wall portions facing the space, the base member and the resin member arranged in contact with the electromagnetic device, and the electromagnetic device arranged in the inner space are arranged in the direction perpendicular to the mounting surface. And a spring member for pressing the table.

  According to the fixed structure of the electromagnetic device according to the present invention, the position of the electromagnetic device can be fixed securely, the mechanical load applied to the electromagnetic device can be reduced, and the possibility of damage to the electromagnetic device can be reduced. .

It is an exploded perspective view of electromagnetic equipment and a side wall part concerning Embodiment 1 of the present invention. It is a disassembled perspective view of the fixing structure of the electromagnetic device which concerns on Embodiment 1 of this invention. It is the top view and sectional drawing of the fixing structure of the electromagnetic device concerning Embodiment 1 of this invention. It is the top view and sectional drawing of an electromagnetic equipment, a base, and a side wall part concerning Embodiment 1 of the present invention. It is a perspective view of the fixing structure which concerns on Embodiment 1 of this invention. It is a side view of the fixed structure concerning Embodiment 1 of the present invention. It is a side view of the fixed structure concerning Embodiment 1 of the present invention. It is a top view of the coil-forming body and side wall part in Embodiment 1 of this invention. It is a side view of the coil-forming body and side wall part in Embodiment 1 of this invention. It is a side view of the coil-forming body and side wall part in Embodiment 1 of this invention. It is a perspective view of the coil-forming body and side wall part in Embodiment 1 of this invention. It is a perspective view of an electromagnetic device and a side wall part in Embodiment 1 of the present invention. It is a perspective view of an electromagnetic device and a side wall part in the state where the electromagnetic device in Embodiment 1 of the present invention was fixed with tape. It is a disassembled perspective view of the fixed structure which concerns on Embodiment 2 of this invention. It is a disassembled perspective view of the fixing structure which concerns on Embodiment 3 of this invention. It is the top view and sectional drawing of an electromagnetic equipment in Embodiment 4 of this invention, a base, and a side wall part. It is a perspective view of the fixing structure which concerns on Embodiment 4 of this invention. It is a disassembled perspective view of the core in Embodiment 4 of this invention. It is the top view and sectional drawing of an electromagnetic equipment in Embodiment 5 of this invention, a base, and a side wall part. It is a disassembled perspective view of the core in Embodiment 5 of this invention. It is the top view and sectional drawing of an electromagnetic equipment in Embodiment 6 of this invention, a base, and a side wall part. It is a disassembled perspective view of the core in Embodiment 6 of this invention.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference symbols may be attached to parts corresponding to the items described above in the form preceding to each form, and redundant description may be omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described above.

Embodiment 1
FIG. 1 is an exploded perspective view of an electromagnetic device 2 and a side wall 4 according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the fixing structure 1 of the electromagnetic device 2 according to Embodiment 1 of the present invention. FIG. 3 is a plan view and a cross-sectional view of the fixed structure 1 of the electromagnetic device 2 according to Embodiment 1 of the present invention. FIG. 3A is a plan view. FIG.3 (b) is sectional drawing which cut | disconnected and saw the base 3 and the side wall part 4 by cutting-plane-line AA shown to Fig.3 (a). FIG.3 (c) is sectional drawing which cut | disconnected and saw the base 3, the side wall part 4, the coil molded object 16, and the core 15 by cutting-plane-line B-B shown to Fig.3 (a). FIG. 4 is a plan view and a cross-sectional view of the electromagnetic device 2, the base 3, and the side wall 4 according to Embodiment 1 of the present invention. FIG. 4A is a plan view. FIG. 4 (b) is a cross-sectional view of the base 3, the side wall 4, the coil molded body 16 and the core 15 cut along the cutting plane line C-C shown in FIG. 4 (a).

  In the present embodiment, the electromagnetic device 2 is a vehicle-mounted electromagnetic device, and specifically, a reactor, a transformer or the like that forms a magnetic field by power supply. The fixed structure 1 of the electromagnetic device 2 in the present embodiment is installed in a state where the electromagnetic device 2 is positioned and held inside a vehicle such as a car, a motorcycle, or a train. Hereinafter, the fixing structure 1 of the electromagnetic device 2 will be simply referred to as the “fixing structure 1”.

  The fixed structure 1 includes a base 3, an electromagnetic device 2, a side wall 4, a resin member 5, and a spring member 6. The base 3 is formed with a planar mounting surface 11. The electromagnetic device 2 is disposed on the mounting surface 11 and has two cores 15 and a coil compact 16. The two cores 15 and the coil compact 16 are combined in the direction perpendicular to the mounting surface 11. The side wall portion 4 is formed to extend from the mounting surface 11 perpendicularly to the mounting surface 11 of the base 3. Further, the side wall portion 4 defines the internal space 12 in which the electromagnetic device 2 is disposed in a direction parallel to the mounting surface 11. The resin member 5 is disposed in contact with the side wall portion 4 and the electromagnetic device 2 at a plurality of inner wall portions 13 of the side wall portion 4 facing the internal space 12. The spring member 6 presses the electromagnetic device 2 disposed in the internal space 12 against the base 3 in the direction perpendicular to the mounting surface 11.

  The direction perpendicular to the mounting surface 11 is referred to as “vertical direction Z”. In the vertical direction Z, the direction of moving away from the mounting surface 11 is referred to as “vertical direction one side Z1”, and the direction approaching the mounting surface 11 is referred to as “the other direction Z2 of vertical direction”. The coil molded body 16 forming a part of the electromagnetic device 2 has a coil 17 formed by winding a conductive wire and an insulator 18 covering the coil 17. The insulator 18 is formed of resin. In the present embodiment, the insulator 18 is formed by injection molding around the coil 17 and integrally formed with the side wall 4. As a result, the coil 17, the insulator 18 in close contact with the coil 17 and holding the coil 17, and the side wall portion 4 are formed as an integral part.

  The coil molded body 16 is formed in an annular and flat plate shape, and is disposed with the thickness direction aligned with the vertical direction Z. A through hole 21 penetrating in the vertical direction Z is formed at the center of the coil molded body 16. The end portion of the wire forming the coil molded body 16 is formed so as to protrude outward in one of the radial directions perpendicular to the thickness direction. Also, the end of the lead is formed as a terminal 22 that forms part of the power supply path when connected to an external power supply. The direction in which the terminals 22 project from the center of the coil molded body 16 is referred to as “projecting direction X”, and the direction in which the terminals 22 project in the projecting direction X is referred to as “projecting direction one X1”. The direction opposite to the direction X1 is referred to as "projecting direction other X2".

  FIG. 5 is a perspective view of the fixing structure 1 according to Embodiment 1 of the present invention. 6 and 7 are side views of the fixing structure 1 according to the first embodiment of the present invention. FIG. 8 is a plan view of coil compact 16 and sidewall 4 in accordance with the first exemplary embodiment of the present invention. FIG. 9 and FIG. 10 are side views of coil compact 16 and sidewall 4 in accordance with the first exemplary embodiment of the present invention. FIG. 11 is a perspective view of coil compact 16 and sidewall 4 in accordance with the first exemplary embodiment of the present invention.

  In the present embodiment, the coil compact 16 and the side wall 4 are integrally formed. This is formed, for example, by injection molding. As shown in FIGS. 8 to 11, the electromagnetic device 2 has an exposed portion 23. The exposed portion 23 protrudes in the projecting direction X more than the side wall portion 4 and is exposed. Further, the exposed portion 23 includes a terminal 22 which forms a part of a power supply path to the electromagnetic device 2 and is integrally formed with a part of the side wall 4.

  There are two terminals 22 of the coil molded body 16, and the two terminals 22 are disposed apart from each other in a direction perpendicular to the vertical direction Z and the projecting direction X. Hereinafter, a direction perpendicular to both the vertical direction Z and the projecting direction X will be referred to as a “separation direction Y”. The end of the other projecting direction X 2 of the coil molded body 16 opposite to the exposed portion 23 is integrally formed with a part of the side wall 4.

  As shown in FIG. 1, the core 15 is constituted by two parts which can be separated in the vertical direction Z. Of the core 15, a component located in one vertical direction Z1 is referred to as a "first component 31", and a component located in the other vertical direction Z2 is referred to as a "second component 32". In the present embodiment, the first part 31 and the second part 32 are formed in the same size and shape as each other. The first part 31 and the second part 32 are formed in a rectangular shape when viewed in the vertical direction Z, and the corners of the rectangular form a chamfered shape. The surface of the first part 31 in the vertical direction Z1 and the surface of the second part 32 in the vertical direction Z2 are formed in a planar shape.

  The first part 31 is formed with two outer legs formed to extend in the other vertical direction Z2, and a central leg formed to extend in the other vertical direction Z2. The outer leg formed on the first part 31 is referred to as "first outer leg 35", and the central leg formed on the first part 31 is referred to as "first central leg 33". Two first outer legs 35 are formed separately in the separating direction, and are formed at both ends of the first component 31 in the separating direction. The first central leg 33 is formed at the central portion of the first part 31 in the separation direction. The first central leg 33 is formed in a circular shape when viewed in the vertical direction, and is inserted and disposed in the through hole 21 formed in the coil molded body 16. The end face of the other of the first outer leg portions 35 in the vertical direction Z2 and the end face of the other one of the first central legs 33 in the vertical direction Z2 are formed along the same plane.

  A portion of the first outer leg portion 35 facing the first central leg 33 is formed in an arc shape along the coil molded body 16. Between the first outer leg 35 and the first central leg 33, as a result of the two first outer legs 35 separated in the separated direction and the first central leg 33 in the middle in the separated direction being formed on the first part 31. A groove is formed in the. When the portion defining the groove from one side in the vertical direction is referred to as “first bottom portion 34”, first bottom portion 34 is formed in a planar shape parallel to mounting surface 11. The shape when the first bottom portion 34 is viewed in the vertical direction corresponds to the shape when the coil molded body 16 is viewed in the vertical direction. At least a part of the coil molded body 16 is disposed in a groove formed in the first component 31.

  The second part 32 is formed with two outer legs extending in the vertical direction Z1 and a central leg extending in the vertical direction Z1. The outer leg formed on the second part 32 is referred to as "the second outer leg 42", and the central leg formed on the second part 32 is referred to as the "second central leg 36". Two second outer legs 42 are formed separately in the separating direction, and are formed at both ends of the second component 32 in the separating direction. The second central leg 36 is formed at the central portion of the second part 32 in the separation direction. The second central leg 36 is formed in a circular shape when viewed in the vertical direction, and is inserted and disposed in the through hole 21 formed in the coil molded body 16. The end face of the second outer leg 42 in the vertical direction Z1 and the end face of the second central leg 36 in the vertical direction Z1 are formed along the same plane.

  A portion of the second outer leg portion 42 facing the second central leg 36 is formed in an arc shape along the coil molded body 16. Between the second outer leg 42 and the second central leg 36, as a result of the two second outer legs 42 separated in the separated direction and the second central leg 36 in the separated direction being formed in the second part 32, A groove is formed in the. When the portion defining the groove from one side in the vertical direction is referred to as “second bottom portion 41”, second bottom portion 41 is formed in a planar shape parallel to mounting surface 11. The shape when the second bottom portion 41 is viewed in the vertical direction corresponds to the shape when the coil molded body 16 is viewed in the vertical direction. At least a portion of the coil compact 16 is disposed in a groove formed in the second component 32.

  In the present embodiment, the first component 31 and the second component 32 are formed in the same shape and size, and are arranged in an attitude in which one vertical direction Z1 and the other vertical direction Z2 are inverted. The first part 31 and the second part 32 are each formed in a plane-symmetrical shape with respect to a plane perpendicular to the projecting direction X, and also formed in a plane-symmetrical shape with respect to a plane perpendicular to the separating direction. The first component 31 is disposed on one side Z 1 in the vertical direction than the coil molded body 16, and the second component 32 is disposed on the other side Z 2 in the vertical direction than the coil molded body 16.

  As a result of arranging the first part 31 and the second part 32 in proximity to the coil molded body 16, respectively, the surface of the other of the first central leg 33 in the vertical direction Z2 and the surface of the second central leg 36 in the vertical direction Z1 Contact. Further, the surface of the other of the first outer leg portion 35 in the vertical direction Z2 is in contact with the surface of the second outer leg portion 42 in the vertical direction Z1. When the first part 31 and the second part 32 are disposed in contact with each other, the surfaces in contact with each other will be referred to as the "contact surface 14". The first part 31 and the second part 32 are disposed in contact with each other at the contact surface 14 to determine the positional relationship with the coil compact 16.

  Next, the side wall 4 will be described. As shown in FIGS. 2 and 3, the side wall 4 is fixed to the base 3 by screws 45. The base 3 functions as a heat sink that radiates the heat generated from the electromagnetic device 2 to the outside. Side wall portion 4 is integrally formed with coil molded body 16, first component 31 and second part 32 of core 15 are fixed to each other with coil molded body 16 sandwiched from both sides in the vertical direction, and side wall portion 4 is a base The electromagnetic device 2 having the coil molded body 16 and the core 15 is fixed to the base 3 by being fixed to the base 3 with the screw 45.

  The side wall portion 4 has a terminal side member 43 which defines the internal space 12 from one projecting direction X1, and an opposing member 44 which faces the terminal side member 43 and defines the internal space 12 from the other projecting direction X2. The terminal side member 43 and the opposing member 44 are formed separately in the projecting direction X. The terminal side member 43 allows exposure of the exposed portion 23 of the coil molded body 16 in the projecting direction X 1 and is integrated with the coil molded body 16, specifically, the exposed portion 23. The opposing member 44 is integrated with the end of the coil forming body 16 in the other projecting direction X2.

  The internal space 12 defined by the terminal side member 43 and the opposing member 44 is approximately rectangular when viewed in the vertical direction Z. The sidewall 4 covers the beveled corner of the core 15 at the rectangular corner position. The position of the four corners of the rectangle in the side wall portion 4 is the inner wall portion 13, and the resin member 5 is disposed in this portion. As shown in FIG. 4 (b), the resin member 5 is disposed in contact with both of the two parts forming the core 15, that is, the first part 31 and the second part 32.

  The core 15 in the vicinity of the inner wall portion 13 will be specifically described based on FIG. 4 (b). The outer peripheral portion of the core 15 when the electromagnetic device 2 is viewed perpendicularly to the mounting surface 11 is configured by the first component 31 and the second component 32 vertically arranged on the mounting surface 11 in the vicinity of the inner wall portion 13 Ru. The first part 31 and the second part 32 contact each other at the contact surface 14. In the vicinity of the inner wall portion 13, the outer peripheral portions of the first component 31 and the second component 32 are connected to the contact surface 14. The resin member 5 is disposed in contact with the outer peripheral surface of both parts connected to the contact surface 14 of the first part 31 and the second part 32.

  The inner wall portion 13 is formed with a recess which is recessed in a direction away from the center of the coil molded body 16. As shown in FIG. 4B, the portion defining the recess from the outside when the side wall 4 is viewed in the vertical direction Z is formed at a predetermined distance D1 away from the surface of the core 15 facing the inner wall portion 13. Ru. As a result, a space open to one side Z1 in the vertical direction is formed outside the surface of the core 15 facing the inner wall portion 13. When the resin member 5 is disposed in the recess, the nozzle is inserted into the recess from one vertical direction Z1 which is open, and the precursor of the resin member 5 is injected through the nozzle. The resin member 5 is formed of a room temperature curing resin.

  When viewed in the vertical direction Z, the plurality of inner wall portions 13 set to four in the present embodiment surround the central portion of the electromagnetic device 2 from the outside. Thus, when the resin member 5 is disposed on the inner wall portion 13, the resin member 5 prevents displacement in all directions parallel to the mounting surface 11 of the electromagnetic device 2. When the core 15 is formed to be approximately rectangular, the positions of the four corners of the rectangle are positions where the presence or absence of members hardly affects the magnetic field generated by the operation of the coil compact 16 and the core 15.

  The resin member 5 is formed so as to be deformable by external pressure. In other words, the resin member 5 is an elastic member exhibiting rubber elasticity in a temperature range assumed as a use environment. As a result, when the core 15 expands or contracts due to a temperature change, the resin member 5 always keeps in contact with both the side wall 4 and the core 15 and holds the electromagnetic device 2. The resin member 5 does not cover the outer periphery when the electromagnetic device 2 is viewed in the vertical direction Z over the entire periphery, but is disposed on a plurality of inner wall portions separated from each other. Even if a volume change occurs in the device 2 and the resin member 5, the resin member 5 which is an elastic member absorbs changes in expansion and contraction. Therefore, the contact between the side wall portion 4 and the resin member 5 and the contact between the resin member 5 and the electromagnetic device 2 are always maintained.

  The resin member 5 is disposed across the contact surface 14 of the first component 31 and the second component 32 in the vertical direction Z, and the outer peripheral surface of the first component 31 connected to the contact surface 14 and the second component 32 It is disposed in contact with both the outer circumferential surface continuous with the contact surface 14. Thereby, the resin member 5 prevents the first part 31 from being separated from the second part 32 in the vertical direction Z1.

  Side wall 4 includes a projection 47. The protrusion 47 has an inner wall portion 13 at an intermediate position between the position of the contact surface 14 of the first component 31 and the second component 32 and the position of the mounting surface 11 in the direction perpendicular to the mounting surface 11. Protruding toward the inner space 12 side. The resin member 5 is disposed in contact with the protrusion 47 from one side Z <b> 1 in the vertical direction of the protrusion 47. By forming the projection 47 on the side wall 4, the resin member 5 can be positioned near the contact surface 14 of the first component 31 and the second component 32 with a small amount.

  FIG. 12 is a perspective view of the electromagnetic device 2 and the side wall 4 in the first embodiment of the present invention. FIG. 13 is a perspective view of the electromagnetic device 2 and the side wall 4 in the state where the electromagnetic device 2 is fixed by the tape 26 in the first embodiment of the present invention. The terminal-side member 43 and the opposing member 44 of the side wall portion 4 are disposed with a predetermined interval D2 in the projecting direction X. As a result, between the terminal side member 43 and the opposing member 44, an opening 48 defined by the terminal side member 43 and the opposing member 44 from both sides in the projecting direction X is formed. The distance between the openings 48 is set wider than the width of the tape 26 for fixing the positions of the first part 31 and the second part 32 of the core 15 to each other. The tape 26 fixes the position of each other by winding the first part 31 and the second part 32. By arranging the terminal side member 43 and the opposing member 44 at a predetermined interval D2, it becomes easy to wind the tape 26 around the first component 31 and the second component 32.

  When the tape 26 is wound around the first part 31 and the second part 32 which form the core 15, the coil molded body 16 is fixed by the first part 31 and the second part 32. By fixing the side wall portion 4 to the base 3 in this state, the side wall portion 4, the coil molded body 16 and the core 15 are positioned with respect to the base 3. The side wall 4 has four bosses 46. The side wall 4 is fixed to the base 3 by attaching the four bosses 46 of the side wall 4 to the base 3 from the vertical direction Z 1 by means of the screws 45. The four bosses 46 are provided in the vicinity of four corners of a rectangle, which is more outward than the inner wall portion 13. As a result, the screw 45 for attaching the side wall 4 to the base 3 is disposed at a position where the presence or absence of the member hardly affects the magnetic field generated by the electromagnetic device 2.

  The spring member 6 is a plate spring which presses the first component 31 forming the core 15 toward the base 3 in a state where the coil molded body 16, the core 15 and the side wall 4 are attached to the base 3. With the coil compact 16, the core 15 and the side wall 4 attached to the base 3, the dimension in the vertical direction Z of the core 15 corresponds to the dimension in the vertical direction Z of the side wall 4. This dimension is referred to as "height H of sidewall". In the base 3, a screwing portion 51 for attaching the spring member 6 is formed by the screw 45. The screwing portion 51 is provided on the other side of the side wall portion 4 in the protruding direction X2. The screwing portion 51 is disposed at the central portion of the side wall 4 in the separating direction in the separating direction. The dimension in the vertical direction Z of the screwing portion 51 corresponds to the height H of the side wall portion. The spring member 6 is screwed to the screwing portion 51 from one vertical direction Z 1, thereby being attached to the base 3 and simultaneously pressing the core 15 toward the base 3.

  The spring member 6 presses the central portion of the first part 31 when the core 15 is viewed in the vertical direction Z. Since the position shift of the electromagnetic device 2 is prevented by the resin member 5 in the direction parallel to the mounting surface 11, the position is not fixed only by the spring member 6. Therefore, compared with the case where the electromagnetic device 2 is held only by the spring member 6, the pressing force by the spring biasing of the spring member 6 can be set smaller. A portion of the surface of the vertical one side Z1 of the core 15 is exposed to the vertical one side Z1 without being covered by the spring member 6.

  With such a configuration, according to the first embodiment, the electromagnetic device 2 is positioned and held by the resin member 5 in the direction parallel to the mounting surface 11. Therefore, when the temperature of the electromagnetic device 2 rises, the resin member 5 is deformed to allow expansion of the electromagnetic device 2. Therefore, local load on the electromagnetic device 2 due to expansion due to temperature change can be prevented. Thereby, damage to the electromagnetic device 2 can be prevented.

  The electromagnetic device 2 is pressed and fixed to the base 3 by being spring-biased by the spring member 6 in a direction perpendicular to the mounting surface 11. Thereby, the thermal expansion of the electromagnetic device 2 in the direction perpendicular to the mounting surface 11 is allowed and held by the elastic deformation of the spring member 6. Since the electromagnetic device 2 is also held by the resin member 5, it is not necessary to prevent the positional deviation in the direction parallel to the mounting surface 11 by the spring biasing of the spring member 6 and the frictional force thereby. Therefore, as compared with the case where the electromagnetic device 2 is fixed only by the spring biasing by the spring member 6, the spring biasing by the spring member 6 can be set weak. Therefore, the risk of the electromagnetic device 2 being damaged by the spring biasing of the spring member 6 can be reduced.

  Further, the coil molded body 16 and the side wall 4 are integrated, and the assembly is completed in the order of attachment of the core 15, attachment of the side wall 4 to the base 3, formation of the resin member 5 and attachment of the spring member 6. Therefore, it is not necessary to incorporate the electromagnetic device 2 against the spring bias. Therefore, compared with the case where the electromagnetic device 2 is inserted between the spring parts, there is no difficulty in the operation and the assembly can be performed easily.

  Further, since the electromagnetic device 2 is disposed in contact with the base 3, when heat is generated from the electromagnetic device 2, the electromagnetic device 2 can dissipate heat through the base 3.

  Further, according to the first embodiment, since the electromagnetic device 2 holds two or more parts by the resin member 5, the relative positions of a plurality of parts can be fixed by the resin member 5. Therefore, the electromagnetic device 2 can be stably held.

  Further, according to the first embodiment, since the side wall portion 4 allows the exposed portion 23 of the electromagnetic device 2 to be exposed outward, compared to the case where the electromagnetic device 2 is not exposed outward from the side wall portion 4, The whole including the side wall 4 can be miniaturized. Further, since the exposed portion 23 of the coil forming body 16 in the protruding direction X1 and the end of the other in the protruding direction X2 are fixed together with the side wall portion 4, the position of the coil molded body 16 can be stably fixed. Can be kept stable.

  Further, according to the first embodiment, since the exposed portion 23 includes the terminal 22 which forms a part of the power supply path to the electromagnetic device 2, the connection for energizing the electromagnetic device 2 can be facilitated.

  Further, according to the first embodiment, since resin member 5 is formed of a room-temperature curing resin, heating and temperature rise until the resin member 5 is formed by solidification after arranging the precursor of resin member 5 Since the process such as is not required, it is possible to prevent the temperature load on the electromagnetic device 2.

  Further, according to the first embodiment, since the side wall portion 4 includes the projection 47, the resin member 5 is moved to the mounting surface 11 side more than the projection 47 in the direction perpendicular to the mounting surface 11. You can stop it. When arranging the resin member 5 across the contact surfaces 14 of a plurality of parts, the amount of the resin member 5 can be reduced compared to the case where the protrusions 47 are not formed.

  Further, according to the first embodiment, when viewed in the vertical direction Z, the plurality of inner wall portions 13 surround the central portion of the electromagnetic device 2 from the outside. Thus, when the resin member 5 is disposed on the inner wall portion 13, the resin member 5 can prevent displacement in all directions parallel to the mounting surface 11 of the electromagnetic device 2. Further, since the resin member 5 is disposed at a plurality of positions separated from each other instead of covering the outer peripheral portion of the electromagnetic device 2 over the entire periphery, compared with the case where the outer peripheral portion of the electromagnetic device 2 is covered over the entire periphery Thermal expansion of the device 2 and the resin member 5 can be flexibly allowed. Therefore, the load applied to the electromagnetic device 2 can be reduced, and the possibility of damage to the electromagnetic device 2 can be reduced.

  Further, according to the first embodiment, since resin member 5 is formed so as to be deformable by external pressure, resin member 5 is always made of sidewall portion 4 and core 15 when core 15 expands or contracts due to a temperature change. It can be kept in contact with both. Therefore, even if the electromagnetic device 2 is used in an environment with severe vibration, the resin member 5 can reduce the vibration of the electromagnetic device 2.

  Further, according to the first embodiment, a portion of the surface of one side Z1 in the vertical direction of the electromagnetic device 2 is exposed to the one side Z1 in the vertical direction without being covered by the spring member 6, so Allow heat dissipation of Therefore, deterioration of the electromagnetic device 2 can be suppressed.

Second Embodiment
Next, a fixed structure 1B according to a second embodiment of the present invention will be described below based on the drawings. The second embodiment is similar to the first embodiment described above, and the differences between the second embodiment and the first embodiment will be mainly described below.

  FIG. 14 is an exploded perspective view of a fixed structure 1B according to Embodiment 2 of the present invention. In the second embodiment, the side wall 4B is integrally formed with the base 3B. The base 3B and the side wall 4B may be formed of a resin, or may be formed of a nonmagnetic metal. The side wall portion 4B covers the electromagnetic device 2B from the other in the protrusion direction X2 of the electromagnetic device 2B, the other in the separation direction and the other in the separation direction. In the side wall portion 4B, a notch 52 which allows the exposed portion 23 of the coil molded body 16B to be exposed is formed in the protruding direction X1. In the coil molded body 16B, although the exposed portion 23 including the terminal 22 in the projection direction X is exposed to one projection direction X1 more than the side wall portion 4B, the coil molded body 16B in the other projection direction X2 is the inside formed by the sidewall portion 4B. It is disposed in the space 12 and is not exposed outward beyond the side wall 4B.

  With such a configuration, according to the second embodiment, the operation of attaching the side wall 4B to the base 3B with the screw 45 is not necessary, so compared to the fixed structure 1B according to the first embodiment, The work efficiency of assembly can be improved.

Third Embodiment
Next, a fixed structure 1C according to a third embodiment of the present invention will be described below based on the drawings. The third embodiment is similar to the first embodiment described above, and the differences between the third embodiment and the first embodiment will be mainly described below.

  FIG. 15 is an exploded perspective view of a fixed structure 1C according to Embodiment 3 of the present invention. The side wall portion 4C is formed apart from the base 3C, and is attached to the base 3C by a screw 45. Further, the side wall portion 4C covers the electromagnetic device 2C from the other projecting direction X2 of the electromagnetic device 2C, the one separating direction and the other separating direction. In the side wall portion 4C, a notch 52 which allows the exposed portion 23 of the coil molded body 16C to be exposed is formed in the protrusion direction X1. In the coil molded body 16C, although the exposed portion 23 including the terminal 22 in the projection direction X is exposed to one projection direction X1 more than the side wall portion 4C, the coil molded body 16C in the other projection direction X2 is an inside formed by the sidewall portion 4C. It is disposed in the space 12 and is not exposed outward beyond the side wall 4C. With such a configuration, the same effect as that of the first embodiment can be obtained.

Fourth Embodiment
Next, a fixed structure 1D according to a fourth embodiment of the present invention will be described below based on the drawings. The fourth embodiment is similar to the first embodiment described above, and the differences between the fourth embodiment and the first embodiment will be mainly described below.

  FIG. 16 is a plan view and a cross-sectional view of an electromagnetic device 2D, a base 3 and a side wall 4 in the fourth embodiment of the present invention. FIG. 16A is a plan view. FIG. 16 (b) is a cross-sectional view of the base 3, the side wall 4, the coil molded body 16 and the core 15 D taken along the cutting plane line D-D shown in FIG. 16 (a). FIG. 17 is a perspective view of a fixed structure 1D according to Embodiment 4 of the present invention. FIG. 18 is an exploded perspective view of core 15 in the fourth embodiment of the present invention.

  At least one of the two cores 15D of the electromagnetic device 2D includes two outer legs. In the present embodiment, both the first part 31D and the second part 32D each include two outer legs. The two outer legs are formed to extend perpendicularly to the mounting surface 11. Also, the two outer legs are provided apart from one another in the separating direction. Specifically, the two outer legs are a first outer leg 35D of a first part 31D that constitutes the core 15D and a second outer leg 42D of a second part 32D.

  The length by which the first central leg 33D of the first part 31D extends in the vertical direction Z from the first bottom 34D is the length by which the first outer leg 35D of the first part 31D extends in the vertical direction Z from the first bottom 34D. Set shorter than The second central leg 36D of the second part 32D extends in the vertical direction Z from the second bottom 41D, and the second outer leg 42D of the second part 32D extends in the vertical direction Z from the second bottom 41D. It is set shorter than the length. Thus, the first central leg 33D is disposed at a predetermined distance D3 from the second central leg 36D when the fixed structure 1D is assembled.

  The spring member 6D includes two pressing portions 53A, 53B. The two pressing portions 53A, 53B are provided apart from each other in the separation direction in which the two outer legs 35D, 42D are separated from each other. One pressing part 53A in the separating direction presses the outer legs 35D, 42D in the separating direction toward the mounting surface 11, and the other pressing part 53B in the separating direction places the other outer legs 35D, 42D in the separating direction. It is pressed towards the surface 11.

  The pressing portions 53A, 53B are formed as part of a plate spring constituting the spring member 6D. The pressing portions 53A, 53B press the central portion in the protruding direction X of the core 15D. In the present embodiment, since the tape 26 is wound around the central portion of the core 15D in the projection direction X, the pressing portions 53A and 53B press the surface portion of the tape 26 in the vertical direction Z. The spring member 6D is fixed to the screwing portion 51 by a screw 45. The screwing portion 51 is provided on the other side of the side wall portion 4 in the protruding direction X2. The screwing portion 51 is disposed at the central portion of the side wall 4 in the separating direction in the separating direction. As a result, when the screwing portion 51 is fixed by the screw 45, even if the spring member 6D is slightly displaced in the direction parallel to the mounting surface 11 with the screwing portion 51 at the center, the two pressing portions 53A , 53B overlap the opening 48 formed in the side wall 4 as viewed in the vertical direction Z. Therefore, pressing of the side wall 4 by the pressing portions 53A, 53B is avoided.

  With such a configuration, according to the fourth embodiment, the two outer leg portions 35D and 42D of the component forming the electromagnetic device 2D are respectively pressed by the pressing portions 53A and 53B. It is possible to prevent bending stress from being generated in the other parts of the parts except for the two outer legs 35D, 42D. This makes it possible to reduce the mechanical load generated on the parts of the electromagnetic device 2D by the spring biasing by the spring member 6D. Therefore, deterioration of the electromagnetic device 2D can be suppressed as compared with the case where bending stress occurs in parts of the electromagnetic device 2D.

Embodiment 5
Next, a fixing structure 1 according to a fifth embodiment of the present invention will be described below based on the drawings. The fifth embodiment is similar to the first embodiment described above, and the differences between the fifth embodiment and the first embodiment will be mainly described below.

  FIG. 19 is a plan view and a cross-sectional view of the electromagnetic device 2E, the base 3 and the side wall 4 in the fifth embodiment of the present invention. FIG. 19A is a plan view. FIG. 19B is a cross-sectional view of the base 3, the side wall portion 4, the coil molded body 16 and the core 15 </ b> E cut along the cutting plane line E-E shown in FIG. FIG. 20 is an exploded perspective view of the core 15 in the fifth embodiment of the present invention.

  In the present embodiment, the contact surfaces 14 of the first component 31E and the second component 32E are closer to the mounting surface 11 side than the central position of the side wall 4 in the direction perpendicular to the mounting surface 11. Be placed. Specifically, the first component 31E is a so-called E-shaped core, and the second component 32E is a so-called I-shaped core. The dimension in which the first outer leg 35E of the first component 31E extends in the vertical direction Z from the first bottom 34E is set larger than the dimension in the vertical direction Z of the coil molded body 16. The second part 32E is formed as a plate-like member. The first part 31E and the second part 32E when viewed in the vertical direction Z are formed in the same shape and size as each other. The first part 31E contacts the second part 32E by the first central leg 33E and the first outer leg 35E.

  With such a configuration, according to the fifth embodiment, movement of resin member 5 is prevented at a position closer to mounting surface 11 than contact surface 14 of first component 31E and second component 32E. It is possible to contact and fix two or more parts by the small amount of the resin member 5 without providing the protruding portion 47.

Sixth Embodiment
Next, a fixing structure 1 according to a fifth embodiment of the present invention will be described below based on the drawings. The sixth embodiment is similar to the first embodiment described above, and the differences between the sixth embodiment and the first embodiment will be mainly described below.

  FIG. 21 is a plan view and a cross-sectional view of an electromagnetic device 2F, a base 3 and a side wall 4 in the sixth embodiment of the present invention. FIG. 21 (a) is a plan view. FIG. 21 (b) is a cross-sectional view of the base 3, the side wall 4, the coil molded body 16 and the core 15F cut along the cutting plane line F-F shown in FIG. 21 (a). FIG. 22 is an exploded perspective view of core 15 in the sixth embodiment of the present invention.

  In the present embodiment, the contact surfaces 14 of the first component 31F and the second component 32F are arranged at positions farther from the mounting surface 11 than the central position of the side wall 4 in the direction perpendicular to the mounting surface 11. Be done. Specifically, the first component 31F is a so-called I-shaped core, and the second component 32F is a so-called E-shaped core. The dimension in which the second outer leg portion 42F of the second part 32F extends in the vertical direction Z from the second bottom 41F is set larger than the dimension in the vertical direction Z of the coil molded body 16. The first component 31E is formed as a plate-like member. The first part 31E and the second part 32F when viewed in the vertical direction Z are formed in the same shape and size as each other. The second part 32F contacts the second part 32F by the second central leg 36F and the second outer leg 42F.

  With this configuration, according to the fifth embodiment, it is not necessary to place the precursor of the resin member 5 close to the mounting surface 11, so the contact surface 14 of the parts is the mounting surface 11. The workability for forming the resin member 5 can be improved as compared with the case of being located near.

  In any one of Embodiments 1 to 6 in the first part 31, 31D, 31E, 31F and the second part 32, 32D, 32E, 32F, which constitute the cores 15, 15D, 15E, 15F, the vertical direction Although the central leg is formed at the central portion when viewed at Z, the central leg is not formed and may be a so-called U-shaped core. For example, the first outer legs 35, 35D, 35E, 35F are formed on the first parts 31, 31D, 31E, 31F, and the first outer legs 35, 35D, 35D of the first parts 31, 31D, 31E, 31F. The portions other than 35E and 35F may all have a planar bottom. Also when one of the first component 31, 31D, 31E, 31F and the second component 32, 32D, 32E, 32F is formed as a plate-like member, the other does not have a central leg at the central portion, Only the outer leg portion may be formed as a so-called U-shaped core.

  Each embodiment is illustrated to embody the technology according to the present invention, and does not limit the technical scope of the present invention. The present invention can freely combine each embodiment within the scope of the invention, and can suitably modify or omit each embodiment.

1, 1A, 1B, 1C, 1D, 1E, 1F fixed structure,
2, 2D, 2E, 2F electromagnetic equipment, 3, 3B base, 4, 4B, 4C side wall,
5 resin member, 6 spring member, 11 mounting surface, 12 internal space, 13 inner wall portion,
14 contact surfaces, 15, 15D, 15E, 15F cores, 16 coil compacts,
17 coils, 18 insulators, 21 through holes, 22 terminals, 23 exposed parts,
26 tape, 31, 31 D, 31 E, 31 F first part,
32, 32D, 32E, 32F second part, 33, 33D, 33E first central leg,
34, 34D, 34E first bottom, 35, 35D, 35E first outer leg,
36, 36D, 36F second central leg, 41, 41D, 41F second bottom,
42, 42D, 42F second outer leg, 43 terminal side member, 44 opposing member, 45 screw, 46 boss, 47 projection, 48 opening, 51 screwing portion, 53A, 53B pressing portion, Z vertical direction, X overhang direction,
Y Separation direction.

The fixed structure of the electromagnetic device according to the present invention comprises a base on which a planar mounting surface is formed, two cores disposed on the mounting surface, and combined in a direction perpendicular to the mounting surface. And a side wall portion which is formed extending vertically from the mounting surface of the base to the mounting surface and defines an inner space in which the electromagnetic device is disposed, the wall facing the inner space And a side wall portion provided with a plurality of inner wall portions formed as concave portions recessed in a direction away from the electromagnetic device, and a resin member disposed in contact with the side wall portion and the electromagnetic device in the plurality of inner wall portions A spring member for pressing the electromagnetic device disposed in the internal space against the base in a direction perpendicular to the mounting surface.

Claims (12)

A base on which a planar mounting surface is formed;
An electromagnetic device having two cores and a coil disposed on the mounting surface and assembled in a direction perpendicular to the mounting surface;
A side wall portion extending vertically from the mounting surface of the base to the mounting surface and defining an inner space in which the electromagnetic device is disposed;
A resin member disposed in contact with the side wall portion and the electromagnetic device at a plurality of inner wall portions facing the internal space in the side wall portion;
And a spring member for pressing the electromagnetic device disposed in the inner space against the base in a direction perpendicular to the mounting surface. The fixing structure according to claim 1, wherein the resin member is disposed in contact with the two cores. The side wall portion is located on the inner space side from the inner wall portion at a position intermediate to the position of the contact surface of the two cores in the direction perpendicular to the mounting surface and the position of the mounting surface. The fixing structure of an electromagnetic device according to claim 2, wherein the fixing portion includes a protrusion formed to protrude. Each of the cores includes two outer legs extending perpendicularly to the mounting surface, the two outer legs being spaced apart from each other in a direction parallel to the mounting surface,
The spring member includes two pressing portions provided apart from each other in a direction in which the two outer legs are separated from each other,
The one pressing portion in the separating direction presses the one external leg in the separating direction toward the mounting surface, and the other pressing portion in the separating direction is the other external leg in the separating direction. The fixed structure of the electromagnetic device according to any one of claims 1 to 3, wherein the fixed structure is pressed toward the mounting surface. The mutual contact surface of two said cores is arrange | positioned in the direction perpendicular | vertical to the said mounting surface, and is arrange | positioned closer to the said mounting surface side rather than the center position of the said side wall part. The fixed structure of the electromagnetic device according to any one of the preceding claims. Of the two cores, the core far from the mounting surface is
Two outer legs extending perpendicularly to the mounting surface, the two outer legs being spaced apart from one another in a direction parallel to the mounting surface;
A central leg extending perpendicularly to the mounting surface at a central position in a direction away from each other;
The fixing structure of an electromagnetic device according to claim 5, wherein the core closer to the mounting surface of the two cores is formed in a flat plate shape parallel to the mounting surface. The mutual contact surface of the two said cores is arrange | positioned in a direction perpendicular | vertical to the said mounting surface in the position far from the said mounting surface rather than the center position of the said side wall part. The fixed structure of the electromagnetic device according to item 1. Of the two cores, the core closer to the mounting surface is
Two outer legs extending perpendicularly to the mounting surface, the two outer legs being spaced apart from one another in a direction parallel to the mounting surface;
A central leg extending perpendicularly to the mounting surface at a central position in a direction away from each other;
The fixing structure of an electromagnetic device according to claim 7, wherein the core remote from the mounting surface of the two cores is formed in a flat plate shape parallel to the mounting surface. The side wall portion has two portions separated in one direction parallel to the mounting surface,
The fixed structure of the electromagnetic device according to any one of claims 1 to 8, wherein the two parts are arranged at predetermined intervals in the one direction. The fixing structure according to claim 9, wherein the side wall portion is integrally formed with an insulator which covers the coil and holds the coil. The fixed structure of an electromagnetic device according to any one of claims 1 to 8, wherein the side wall portion is integrally formed with the base. The fixing structure of an electromagnetic device according to any one of claims 1 to 11, wherein the resin member is formed of a room temperature curing resin.

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