Magnetic material unit

Abstract

The objective is to provide a magnetic unit that enables proper assembly of biasing members for biasing a magnetic core. [Solution] The magnetic material unit 1 includes a magnetic material core 10 formed in an annular shape around a first direction X and divided along a second direction Y, with the first core 11 and the second core 12 in contact along a third direction Z; a leaf spring 40 that biases the second core 12 toward the first core 11 along the third direction Z; a cover 30 having one side locking portion 33e into which the leg portion 42a of the leaf spring 40 is locked; a base member 20 that houses the magnetic material core 10 and has a bottom portion 21 that supports the first core 11, a cover guide portion 25 that guides the cover 30 as it enters along the third direction Z, and the other side locking portion 23e into which the leg portion 42b of the leaf spring 40 is locked; and a lock portion 60 that locks the cover 30 and the base member 20.

Description

Technical Field

[0001] The present invention relates to a magnetic unit.

Background Art

[0002] As a technology related to a conventional magnetic unit, for example, in Patent Document 1, the core has split core pieces separated along the first axis among the first axis, the second axis, and the third axis perpendicular to each other. In the case, a spring member that presses the split core pieces downward along the third axis into the case is attached. A slit is formed in the spring member along the second axis, and a first pressing piece and a second pressing piece are formed. Elastic bending portions that contact the respective split core pieces are formed by being displaced along the second axis in the first pressing piece and the second pressing piece. The spring member is fixed to the case by a fixing bolt through a fixing hole provided in the spring member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, such a magnetic unit is provided with a biasing member such as a spring member in order to bring the split magnetic cores into contact with each other. And there is room for further improvement in the configuration in which the biasing member is assembled to the case.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a magnetic unit capable of properly realizing the assembly of a biasing member for biasing a magnetic core.

Means for Solving the Problems

[0006] To achieve the above objective, the magnetic unit of the present invention includes a magnetic core formed in an annular shape around a first direction and divided along a second direction intersecting the first direction, wherein the first core and the second core are in contact along a third direction intersecting the first and second directions, a biasing member that biases the second core toward the first core along the third direction, and a cover having a one-sided locking portion into which one side of the biasing member is locked. The base member comprises a bottom portion that houses the magnetic core and supports the first core, a cover guide portion that guides the cover as it moves in along the third direction, and a other-side locking portion into which the other side of the biasing member is locked, and a locking portion that locks the cover and the base member. [Effects of the Invention]

[0007] The magnetic unit according to the present invention has the effect of enabling proper assembly of the biasing member for biasing the magnetic core. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing a magnetic material unit according to an embodiment. [Figure 2] Figure 2 is an exploded perspective view showing a magnetic material unit according to an embodiment. [Figure 3] Figure 3 is a perspective view showing the base member according to the embodiment. [Figure 4] Figure 4 is a cross-sectional perspective view of the area around the locking portion in the IV-IV section of Figure 3. [Figure 5] Figure 5 is a cross-sectional perspective view of the area around the other locking portion in the IV-IV section of Figure 3. [Figure 6] Figure 6 is a perspective view showing a bobbin according to the embodiment. [Figure 7] Figure 7 is a perspective view showing the cover according to this embodiment. [Figure 8] Figure 8 is a cross-sectional view taken along line VIII-VIII in Figure 1. [Figure 9]Figure 9 is a perspective view showing the base member according to the embodiment before the cover is attached. [Figure 10] Figure 10 is a partially enlarged cross-sectional view corresponding to the XX section in Figure 1, showing the state when the cover enters the cover guide portion according to the embodiment. [Figure 11] Figure 11 shows the state when the cover has entered the cover guide portion according to the embodiment, and is a partially enlarged cross-sectional view corresponding to the XX section in Figure 1, showing the state when the cover has entered further from Figure 10. [Figure 12] Figure 12 is a partially enlarged cross-sectional view of Figure 1, showing the state in which the cover-side locking portion is locked to the base-side locking portion according to the embodiment. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited by these embodiments. Furthermore, some of the components in the following embodiments may be easily substituted or substantially identical to those that are easily substituted by those skilled in the art.

[0010] [Embodiment] The magnetic unit 1 of this embodiment, shown in Figures 1 and 2, is installed in a high-voltage junction box to which a high-voltage battery pack, such as those mounted in electric vehicles or hybrid vehicles, is electrically connected. The magnetic unit 1 has a busbar 100 inserted through an annular magnetic core 10, which includes a first core 11 and a second core 12, which are divided cores. The busbar 100 is a circuit body (conductor) that constitutes a high-voltage circuit system including a high-voltage battery pack. The magnetic unit 1, equipped with the magnetic core 10, can effectively remove high-frequency noise in the busbar 100 and suppress surge voltages.

[0011] The magnetic unit 1 includes a magnetic core 10, a base member 20, a cover 30, a biasing member, a leaf spring 40, and two bobbins 50. Two busbars 100 are inserted through the annular magnetic core 10. The busbars 100 are formed in an elongated shape, but only a portion of them is shown in the figure.

[0012] In the following explanation, the axial direction of the annular magnetic core 10, in which the two busbars 100 extend, will be referred to as the first direction X, and the two directions perpendicular to the first direction X will be referred to as the second direction Y and the third direction Z. The second direction Y is the direction in which the two busbars 100 are arranged. Furthermore, in the following explanation, one side of the first direction X will be referred to as side X1 and the other side as side X2. Similarly, the second direction Y will be referred to as side Y1 and the other side Y2, and the third direction Z will be referred to as side Z1 and the other side Z2.

[0013] As shown in Figure 2, the magnetic core 10 includes a first core 11 and a second core 12 that are divided along a second direction Y. The magnetic core 10 is formed in an annular shape around a first direction X with the first core 11 and the second core 12 combined (see also Figure 8). The first core 11 and the second core 12 are formed in the same shape and are members containing a magnetic material such as ferrite. The first core 11 and the second core 12 are each substantially U-shaped when viewed from the first direction X and are formed to be long along the first direction X. The first core 11 and the second core 12 have two flat surfaces located on the open side of the substantially U-shape which are the contact surfaces 10a and 10b. The contact surfaces 10a and 10b of the first core 11 and the second core 12 of the magnetic core 10 are in contact with each other along a third direction Z.

[0014] As shown in FIG. 3, the base member 20 is formed in a substantially rectangular parallelepiped box shape with one side Z1 in the third direction Z being open. The base member 20 is provided with a substantially long rectangular plate-shaped bottom portion 21 substantially parallel to the surface including the first direction X and the second direction Y. On one side Z1 in the third direction Z of the bottom portion 21, a core support portion 21a is formed in a lattice shape. The surface of the core support portion 21a on one side Z1 in the third direction Z abuts against and supports the surface of the other side Z2 in the third direction Z of the first core 11. As shown in FIG. 8, lattice-shaped ribs 21b similar to the core support portion 21a are also formed on the other side Z2 in the third direction Z of the bottom portion 21.

[0015] As shown in FIG. 3, near the ends of one side Y1 and the other side Y2 in the second direction Y of the bottom portion 21, two side wall portions 22 standing upright toward one side Z1 in the third direction Z are provided. Here, the side wall portion 22 on one side Y1 in the second direction Y is referred to as the side wall portion 22a, and the side wall portion on the other side Y2 is referred to as the side wall portion 22b. The side wall portions 22a and 22b are formed in a substantially plate shape with the plate surface facing the second direction Y. The side wall portions 22a and 22b are provided on the sides of the magnetic core 10 in the second direction Y (see FIG. 8). At each end of one side X1 and the other side X2 in the first direction X of the side wall portions 22a and 22b, substantially plate-shaped insertion plate portions 26 are provided. Each insertion plate portion 26 is provided with the plate surface facing the first direction X. In the substantially center of the second direction Y of each insertion plate portion 26, an insertion opening 26a long along the third direction Z is formed. A bobbin 50 is disposed in the insertion opening 26a, and a bus bar 100 is inserted therethrough.

[0016] On the outside of the side wall portion 22a on one side Y1 of the second direction Y, a cover guide portion 25 and a base-side locking portion 61 are provided. The cover guide portion 25 guides the cover 30 that enters along the third direction Z. The cover guide portion 25 is provided with guide side plates 25a that extend from the respective insertion plate portions 26 on one side X1 and the other side X2 of the first direction X to one side Y1 of the second direction Y. The cover guide portion 25 has a guide plate 25b. The guide plate 25b extends in a direction facing each other along the first direction X from the respective guide side plates 25a on one side X1 and the other side X2 of the first direction X. In other words, the guide plate 25b extends from the guide side plate 25a on one side X1 to the other side X2, and extends from the guide side plate 25a on the other side X2 to one side X1. There is a gap between the guide plates 25b on one side X1 and the other side X2 of the first direction X. The guide side plates 25a and the guide plate 25b are each formed to have the same length as the side wall portion 22 and the third direction Z. Also, between the guide side plates 25a on one side X1 and the other side X2 of the first direction X, a cross plate 25c is provided so as to span between the guide plates 25b between one side X1 and the other side X2 of the first direction X. The cross plate 25c is arranged with its plate surface facing the third direction Z.

[0017] As shown in FIG. 4, on the other side Z2 of the third direction Z of the surface of the other side Y2 of the second direction Y of each guide plate 25b, a guide surface 25d is provided. The guide surface 25d is provided to face the base-side locking portion 61 on the outside (one side Y1 in the second direction Y) of the side wall portion 22a in the second direction Y. The guide surface 25d is formed to be curved so as to gradually approach the base-side locking portion 61 as it goes toward the other side Z2 of the third direction Z.

[0018] The base-side locking portion 61 locks with the cover-side locking portion 62, which will be described later, and together with the cover-side locking portion 62, constitutes the locking portion 60. The base-side locking portion 61 protrudes outward from the side wall portion 22a and is inclined toward the other side Z2 of the third direction Z (in other words, toward the direction toward which the cover 30, which will be described later, enters). The base-side locking portion 61 has a first inclined surface 61a that is on one side Z1 of the third direction Z and connects to the side wall portion 22a, a hanging surface 61b that hangs down from the tip of the first inclined surface 61a toward the other side Z2 of the third direction Z, and a second inclined surface 61c that connects the hanging surface 61b to the side wall portion 22a and is substantially parallel to the first inclined surface 61a. The base-side locking portion 61 is formed such that the angle between the hanging surface 61b and the second inclined surface 61c is acute via the R shape at the tip. Between the base-side locking portion 61 and the other side Z2 in the third direction Z, and the side wall portion 22a, a space S1 is formed to which the cover-side locking portion 62 is locked, as will be described later.

[0019] As shown in Figure 3, a roughly rectangular, box-shaped spring locking portion 23 is provided on the outside of the side wall portion 22b on the other side Y2 in the second direction Y, along the first direction X and the third direction Z. The portion of the spring locking portion 23 on one side Z1 in the third direction Z protrudes further Z1 than the end of the side wall portion 22b on one side Z1. The spring locking portion 23 comprises two side plates 23a that are provided outward from the side wall portion 22b so as to face each other in the first direction X. The two side plates 23a are positioned with their surfaces facing the first direction X. On the other side Y2 in the second direction Y between the two side plates 23a, an outer plate 23b is provided with its surface facing the second direction Y (see also Figure 5). In addition, on one side Z1 in the third direction Z between the two side plates 23a, an upper plate 23c is provided with its surface facing the third direction Z. The other side Z2 of the upper plate 23c in the third direction Z, and the portion Z1 on one side of the side wall portion 22b, is an opening insertion port 23d.

[0020] As shown in Figure 5, the upper plate 23c is formed to extend approximately perpendicularly from the tip of the outer plate 23b toward one side Y1 in the second direction Y. The other side Z2 of the upper plate 23c in the third direction Z is the other side locking portion 23e to which the other leg portion 42b (described later) of the leaf spring 40 is locked. The other side locking portion 23e has an inclined surface 23e1 on the other side Z2 of the upper plate 23c toward the other side Z2 toward the tip of the upper plate 23c (the end of one side Y1 in the second direction Y).

[0021] As shown in Figure 2, the bobbin 50 consists of two bobbins 50 facing each other along the third direction Z. The two bobbins 50 are identical in shape. As shown in Figure 6, the bobbin 50 has two spaced-apart side plates 51a and 51b, and a partition plate 52 placed between the two side plates 51a and 51b. Each side plate 51a, 51b and the partition plate 52 are formed in a roughly elongated rectangular shape, with the longer side plate in the first direction X and the plate surface facing the second direction Y. Each side plate 51a, 51b and the partition plate 52 are connected by a bottom plate 53 at the end in the third direction Z (the end of the other side Z2 in Figure 6). The height of the side plate 51a on one side Y1 in the second direction Y, as shown in Figure 6, is higher than the side plate 51b and partition plate 52 on the other side Y2. Furthermore, the other side Y2 of the partition plate 52 in the second direction Y is provided with three ribs 52a that connect to the bottom plate 53. Each side plate 51a, 51b is provided with a retaining plate 54 at each end of one side X1 and the other side X2 in the first direction X. The retaining plate 54 is provided with its surface facing the first direction X. The retaining plate 54 has an opening corresponding to the space between the side plates 51a, 51b, and a portion is formed that protrudes outward from the side plates 51a, 51b.

[0022] Two bobbins 50 facing each other in the third direction Z are positioned inside the annular shape of the magnetic core 10, and busbar insertion passages 58 are formed on one side Y1 and the other side Y2 in the second direction Y of the partition plate 52 (see Figure 8). The partition plates 52 are arranged so as to overlap near the ends in the third direction Z. In addition, the inner surfaces of the stopper plates 54 of each bobbin 50 are in close proximity to or in contact with the outer surfaces of the insertion plate portions 26 of the base member 20 (see Figure 1).

[0023] As shown in Figure 7, the cover 30 is formed in a substantially L-shape. The cover 30 has a retaining portion 31 that extends in a substantially plate-like manner in the second direction Y, and an insertion portion 32 that extends from the retaining portion 31 along the third direction Z. The surface of the retaining portion 31 on one side Z1 in the third direction Z is recessed to facilitate pressing with the operator's fingers (see Figure 1). On the other side Z2 of the retaining portion 31 in the third direction Z, there are a plurality of grooves 31a that extend along the second direction Y. On one side Y1 in the second direction Y of the grooves 31a on the other side Z2 of the retaining portion 31 in the third direction Z, there is a one-side locking portion 33e into which one leg portion 42a of the leaf spring 40 is locked. The one-side locking portion 33e has an inclined surface 33e1 that extends toward the other side Z2 in the third direction Z towards the tip of the retaining portion 31 (see also Figure 8).

[0024] The insertion section 32 is provided with a plate-shaped main plate 32a with its surface facing the second direction Y, and two side plates 32b that protrude from both ends of the main plate 32a in the first direction X to the other side Y2 in the second direction Y. The side plates 32b are arranged with their surfaces facing the first direction X. The two side plates 32b are provided with cover-side locking portions 62 that protrude from the outer surface of each side plate 32b. The cover-side locking portion 62 has a first hanging surface 62a that faces the other side Y2 in the second direction Y and is aligned with the third direction Z, a second hanging surface 62c that is substantially parallel to the first hanging surface 62a and faces one side Y1 in the second direction Y, and an upward inclined surface 62b that connects the first hanging surface 62a and the second hanging surface 62c on one side Z1 in the third direction Z. Furthermore, the cover-side locking portion 62 has a horizontal surface 62d that connects to the second hanging surface 62c and forms a surface along the second direction Y on the other side Z2 of the third direction Z, and a downward inclined surface 62e that connects the horizontal surface 62d and the first hanging surface 62a. The cover-side locking portion 62 is formed such that the angle between the first hanging surface 62a and the upward inclined surface 62b is acute via the R shape of the tip.

[0025] As shown in Figures 2 and 8, the leaf spring 40 is made of sheet metal and has two legs 42, forming a roughly mountain shape. The tip of each leg 42 is bent toward the other side Z2 in the third direction Z, forming a curved shape. Of the two legs 42, the leg 42 on one side Y1 in the second direction Y is called leg 42a, and the leg 42 on the other side Y2 is called leg 42b. The legs 42 are provided with roughly triangular openings 41. The space between the legs 42 is a pressing section 43. The pressing section 43 is formed parallel to a plane containing the first direction X and the second direction Y. The two legs 42 are inclined toward one side Z1 in the third direction Z from the pressing section 43.

[0026] As shown in Figure 8, when the cover 30 is locked to the base member 20, one leg portion 42a of the leaf spring 40 is locked to the one-side locking portion 33e of the cover 30. Specifically, the surface of one side Z1 of the leg portion 42a in the third direction Z abuts against the inclined surface 33e1 of the one-side locking portion 33e, thereby locking the leg portion 42a to the one-side locking portion 33e. The other leg portion 42b of the leaf spring 40 is locked to the other-side locking portion 23e provided on the base member 20. Specifically, the surface of one side Z1 of the leg portion 42b in the third direction Z abuts against the inclined surface 23e1 of the other-side locking portion 23e, thereby locking the leg portion 42b to the other-side locking portion 23e. The legs 42 of the roughly V-shaped leaf spring 40 make surface contact with the inclined surfaces 33e1, 23e1 and lock in place, so the leaf spring 40 can be securely locked. In this way, both ends of the leaf spring 40 in the second direction Y are held down, generating an elastic force in the leaf spring 40. The elastic force generated in the leaf spring 40 biases the second core 12 toward the first core 11 along the third direction Z by the pressing portion 43 that contacts one side Z1 of the second core 12 in the third direction Z. In this way, the magnetic core 10 is held in the magnetic unit 1.

[0027] The leaf spring 40 is assembled as follows. As shown in Figure 9, first, the first core 11, bobbin 50, and second core 12 are housed in the base member 20. Briefly, the first core 11, with its contact surfaces 10a and 10b facing one side Z1 of the third direction Z, is housed in the base member 20. The first core 11 is then supported by the bottom 21 (core support portion 21a) of the base member 20. Next, the two bobbins 50 are placed on the first core 11, and the second core 12 is housed in the base member 20 so that it comes into contact with the first core 11. Then, the busbars 100 are inserted through each of the two busbar insertion passages 58 formed by the bobbins 50 that are positioned opposite each other.

[0028] The leaf spring 40 is inserted by inserting the leg portion 42b on the other side Y2 in the second direction Y of the leaf spring 40 into the insertion opening 23d of the spring locking portion 23 of the base member 20, and locking the other side locking portion 23e of the base member 20 with the leg portion 42b of the leaf spring 40. At this time, the pressing portion 43 of the leaf spring 40 is in contact with the surface Z1 on one side in the third direction Z of the second core 12. Then, the cover 30 is moved along the third direction Z toward the other side Z2, and the insertion portion 32 enters the cover guide portion 25. Specifically, the insertion portion 32 enters between the guide plates 25b, and the cover 30 enters the base member 20 so that the second hanging surface 62c of the cover side locking portion 62 is aligned with the inner surface of the guide plate 25b (see Figure 10).

[0029] As the cover 30 enters the cover guide portion 25, as shown in Figure 10, the second downward surfaces 62c of the two cover-side locking portions 62 of the insertion portion 32 slide against the inner surface (the other side Y2 surface) of the guide plate 25b. When the cover 30 is further pushed in by pressing against one side Z1 of the cover 30 in the third direction Z, the corner where the second downward surface 62c and the horizontal surface 62d of the cover-side locking portion 62 connect slides against the guide surface 25d. Therefore, the cover-side locking portion 62 is guided along the guide surface 25d in a direction approaching the side wall portion 22 of the base member 20. At this time, as shown in Figure 11, the tip of the cover-side locking portion 62 moves closer to the side wall portion 22 than the tip of the base-side locking portion 61. Furthermore, at this time, the leg portion 42a of the leaf spring 40 locks into the one-side locking portion 33e. Since the other leg portion 42b of the leaf spring 40 is locked, the leg portion 42a of the leaf spring 40 biases the cover 30 toward one side Z1 in the third direction Z. Therefore, when you release the hand that was pushing the cover 30, the cover 30 moves toward one side Z1 in the third direction Z, as shown in Figure 12. At this time, the upper inclined surface 62b of the cover-side locking portion 62 and the second inclined surface 61c of the base-side locking portion 61 slide into contact, and the cover-side locking portion 62 enters into the space S1 between the base-side locking portion 61 and the side wall portion 22 and locks in place. Due to the sliding contact between the inclined surfaces (the upper inclined surface 62b of the cover-side locking portion 62 and the second inclined surface 61c of the base-side locking portion 61), the cover-side locking portion 62 smoothly locks with the base-side locking portion 61. In this way, the locking portion 60, which includes a base-side locking portion 61 and a cover-side locking portion 62, locks the cover 30 and the base member 20.

[0030] The magnetic material unit 1 described above includes a magnetic material core 10 formed in an annular shape around a first direction X and divided along a second direction Y intersecting the first direction X, with the first core 11 and the second core 12 in contact along a third direction Z intersecting the first direction X and the second direction Y; a leaf spring 40 which is a biasing member that biases the second core 12 toward the first core 11 along the third direction Z; a cover 30 having a one-side locking portion 33e into which one side (leg portion 42a) of the leaf spring 40 is locked; a base member 20 having a bottom portion 21 that houses the magnetic material core 10 and supports the first core 11, a cover guide portion 25 that guides the cover 30 as it enters along the third direction Z, and a other-side locking portion 23e into which the other side (leg portion 42b) of the leaf spring 40 is locked; and a locking portion 60 that locks the cover 30 and the base member 20.

[0031] Thus, in the magnetic unit 1 of this embodiment, the leaf spring 40 can be assembled by simply hooking the other leg portion 42b of the leaf spring 40 onto the other locking portion 23e and attaching the cover 30 to the base member 20 by pushing it in. Therefore, the assembly of the leaf spring 40, which is a biasing member for biasing the magnetic core 10, can be properly achieved.

[0032] For example, if the leaf spring 40 is assembled using a cover that encloses the leaf spring 40 instead of the cover 30 of this embodiment, a subassembly for attaching the leaf spring 40 to the cover may be required before attaching the cover to the base member. With the cover 30 of this embodiment, such a subassembly is not required, thus improving the ease of assembly of the leaf spring 40. Furthermore, with the cover 30 of this embodiment, the locking state of the locking part 60 is maintained by the repulsive force of the leaf spring 40, reducing the risk of the locking part 60 (cover-side locking part 62) coming loose or the cover-side locking part 62 shifting due to vibration, etc., and allowing the magnetic core 10 to be stably in contact with each other, thus stably maintaining high-frequency noise suppression performance and surge voltage reduction. In addition, since the cover 30 can be formed with a smaller volume compared to a cover formed to enclose the leaf spring 40, the amount of resin material required to manufacture the cover 30 can be reduced, for example.

[0033] Furthermore, the cover 30 has a retaining portion 31 that extends along the second direction Y and is provided with a locking portion 33e on one side, and an insertion portion 32 that extends from the retaining portion 31 along the third direction Z and is inserted into the cover guide portion 25. The locking portion 60 has a base-side locking portion 61 provided on the base member 20 and a cover-side locking portion 62 provided on the insertion portion 32 that locks with the base-side locking portion 61. This allows the cover 30 to be formed into a substantially L-shape, which has a retaining portion 31 and an insertion portion 32, making it easy to perform a pressing operation to press the retaining portion 31.

[0034] Furthermore, the base-side locking portion 61 protrudes outward from the side wall portion 22 provided on the side of the magnetic core 10 in the second direction Y and is inclined toward the direction in which the cover 30 enters, the cover-side locking portion 62 protrudes from the insertion portion 32 along the first direction X and is locked to the side wall portion 22 of the base-side locking portion 61, and the cover guide portion 25 includes a guide surface 25d that guides the cover-side locking portion 62, the guide surface 25d is provided on the outside of the side wall portion 22 in the second direction Y and opposite to the base-side locking portion 61, and is formed to curve so as to gradually approach the base-side locking portion 61. As a result, the locking portion 60 can be configured to lock the cover-side locking portion 62 so that it enters the space S1 inside the inclined base-side locking portion 61, making it difficult for the cover-side locking portion 62 to come loose. In space S1, the second inclined surface 61c and the outer surface of the side wall portion 22a are connected at an acute angle, and the sharp-angled tip of the cover-side locking portion 62 fits into it, creating a wedge effect that makes it difficult to dislodge. The cover-side locking portion 62 acts as a follower, and the guide surface 25d, which also acts as a cam surface, allows the cover 30 to be locked to the base member 20 with a simple operation of releasing the pressing operation of the cover 30.

[0035] Furthermore, the magnetic material unit according to the embodiments of the present invention described above is not limited to the embodiments described above, and various modifications are possible within the scope of the claims.

[0036] In the above description, a leaf spring 40 was used as the biasing member for biasing the second core 12, but other biasing members can also be used. Also, the locking part 60 is composed of a base-side locking part 61 and a cover-side locking part 62, but other configurations for locking the cover 30 and the base member 20 can also be adopted.

[0037] The magnetic unit according to this embodiment may be constructed by appropriately combining the components of the embodiments and modified examples described above. [Explanation of Symbols]

[0038] 1: Magnetic Unit 10: Magnetic core 11: First Core 12: Second Core 20: Base component 21: Bottom 22: Side wall section 22a: Side wall part 22b: Side wall part 23e: Other side locking part 25: Cover guide section 25d: Guide surface 30: Cover 31: Relief Department 32: Insertion part 33e: One-sided locking part 40: Leaf spring (biasing member) 60: Rock Club 61: Base-side locking part 62: Cover-side locking part X: 1st direction Y: Second direction Z: 3rd direction

Claims

1. A magnetic core comprising a first core and a second core formed in an annular shape around a first direction and divided along a second direction intersecting the first direction, wherein the first core and the second core are in contact along a third direction intersecting the first and second directions, A biasing member that biases the second core toward the first core along the third direction, A cover having a one-sided locking portion to which one side of the biasing member is locked, A base member having a bottom portion that houses the magnetic core and supports the first core, a cover guide portion that guides the cover as it enters along the third direction, and a other-side locking portion into which the other side of the biasing member is locked, A locking portion that secures the cover and the base member, A magnetic unit equipped with a magnetic material.

2. The cover has a retaining portion that extends along the second direction and is provided with the one-sided locking portion, and an insertion portion that extends from the retaining portion along the third direction and is inserted into the cover guide portion, The locking portion comprises a base-side locking portion provided on the base member and a cover-side locking portion provided on the insertion portion that engages with the base-side locking portion. The magnetic material unit according to claim 1.

3. The base-side locking portion protrudes outward from the side wall portion provided on the side of the magnetic core in the second direction and is provided at an inclination toward the direction in which the cover enters. The cover-side locking portion is provided protruding from the insertion portion along the first direction and is locked to the side wall portion of the base-side locking portion. The cover guide portion includes a guide surface that guides the cover-side locking portion, The guide surface is provided on the outer side of the side wall in the second direction, facing the base-side locking portion, and is formed to curve so as to gradually approach the base-side locking portion. The magnetic material unit according to claim 2.

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