Magnetic material unit

Abstract

The objective is to provide a magnetic unit that can properly implement a configuration in which a biasing member is assembled to a case. [Solution] The magnetic unit 1 comprises a magnetic core 10 including a first core 11 and a second core 12, a base member 20 having a bottom portion 21 that houses the magnetic core 10 and supports the first core 11, and a side wall portion 22 provided on the side of the magnetic core 10, and a leaf spring 40 which is a biasing member whose end portion 42a in the second direction Y is held by the side wall portion 22 and biases the second core 12 toward the other side Z2 in the third direction Z, the side wall portion 22 having a biasing member locking portion 25 that locks with the end portion 42a of the leaf spring 40, the leaf spring 40 having a bent end portion 46 which is the end portion 42a, and the biasing member locking portion 25 has a locking projection 25d that protrudes toward the other side Z2 in the third direction Z to lock with the bent end portion 46.

Description

Technical Field

[0004]

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

Background Art

[0002] As a technique related to a conventional magnetic unit, for example, in Patent Document 1, a clamp, which is a biasing member having an upper surface portion and a pair of leg portions, is provided at an upper surface opening of a case that houses a coil and a magnetic core and is fixed to a base. The clamp has a long leg and a short leg extending from the upper surface portion. The long leg is locked to the bottom surface of the case, and the short leg is locked to a protruding piece protruding from the side surface of the case.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when assembling such a magnetic unit, for example, when assembling the clamp to the case, it is necessary to insert and lock the long leg between the narrow base and the bottom surface of the case, and the assembling work may be difficult. And there is room for further improvement in the configuration for assembling the biasing member 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 appropriately realizing a configuration for assembling a biasing member to a case.

Means for Solving the Problems

[0007] The magnetic unit according to the present invention has the effect of enabling a proper configuration for assembling the biasing member to the case. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing a magnetic material unit according to the first embodiment. [Figure 2] Figure 2 is an exploded perspective view showing a magnetic material unit according to the first embodiment. [Figure 3] Figure 3 is a perspective view showing the base member according to the first embodiment. [Figure 4] Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3. [Figure 5] Figure 5 is a perspective view showing a bobbin according to the first embodiment. [Figure 6] Figure 6 is a perspective view showing a leaf spring according to the first embodiment. [Figure 7] Figure 7 is a cross-sectional view taken along line VII-VII in Figure 1. [Figure 8]Figure 8 is a perspective view showing the base member according to the first embodiment before the leaf spring is attached. [Figure 9] Figure 9 corresponds to the VII-VII section in Figure 1 and is a cross-sectional view showing the state in which the inclined contact portion of the leaf spring is inserted into the biasing member holding portion. [Figure 10] Figure 10 is a perspective view showing a magnetic material unit according to the second embodiment. [Figure 11] Figure 11 is a perspective view showing a leaf spring according to the second embodiment. [Figure 12] Figure 12 is a cross-sectional view taken along line XII-XII in Figure 10. [Figure 13] Figure 13 is a perspective view showing the base member according to the second embodiment before the leaf spring is attached. [Figure 14] Figure 14 corresponds to the XII-XII section in Figure 10 and is a cross-sectional view showing the state in which the inclined contact portion of the leaf spring is inserted into the biasing member holding portion. [Figure 15] Figure 15 is a perspective view showing an example of incorrect assembly of a leaf spring according to the second 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] [First Embodiment] The first embodiment will be described based on FIGS. 1 to 9. The magnetic unit 1 of the first embodiment shown in FIGS. 1 and 2 is provided, for example, in a high-voltage junction box to which a high-voltage battery pack mounted on a vehicle such as an electric vehicle or a hybrid vehicle is electrically connected. The magnetic unit 1 includes an annular magnetic core 10 including a first core 11 and a second core 12 which are split cores, and a bus bar 100 is inserted through the magnetic core 10. The bus bar 100 is a circuit body (conductor) constituting a high-voltage circuit system including a high-voltage battery pack and the like. The magnetic unit 1 provided with the magnetic core 10 can preferably remove high-frequency noise in the bus bar 100 and preferably suppress a surge voltage.

[0011] The magnetic unit 1 includes a magnetic core 10, a base member 20, a leaf spring 40 which is a biasing member, and two bobins 50. Two bus bars 100 are inserted through the annularly formed magnetic core 10. The bus bar 100 is formed in a long shape, but only a part of it is shown in the figure. The magnetic core 10 and the two bobins 50 through which the bus bar 100 is inserted are accommodated in a base member 20 which is a case.

[0012] In the following description, the axial direction of the annular magnetic core 10 and the direction in which the two bus bars 100 extend are defined as the first direction X, and the two directions orthogonal to the first direction X are defined as the second direction Y and the third direction Z. The second direction Y is the direction in which the two bus bars 100 are arranged. Further, hereinafter, one side of the first direction X is referred to as one side X1 and the other side is referred to as the other side X2 for explanation. Similarly, for the second direction Y, one side is referred to as one side Y1 and the other side is referred to as the other side Y2, and for the third direction Z, one side is referred to as one side Z1 and the other side is referred to as the other side Z2 for explanation.

[0013] As shown in FIG. 2, the magnetic core 10 includes a first core 11 and a second core 12 that are divided along the second direction Y. The first core 11 is provided on the other side Z2 of the third direction Z, and the second core 12 is provided on one side Z1 of the third direction Z. The magnetic core 10 is formed in an annular shape around the first direction X in a state where the first core 11 and the second core 12 are combined (see also FIG. 7). 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 as viewed from the first direction X and are formed long along the first direction X. The two flat surfaces located on the open side of the substantially U shape of the first core 11 and the second core 12 are the contact surfaces 10a and 10b. The magnetic core 10 has the contact surfaces 10a and 10b of the first core 11 and the second core 12 contacting each other along the third direction Z.

[0014] As shown in FIGS. 2 and 3, the base member 20 is formed in a substantially rectangular parallelepiped box shape with one side Z1 of the third direction Z opened. 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 of 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 of the third direction Z contacts and supports the surface of the other side Z2 of the third direction Z of the first core 11. As shown in FIG. 7, a rib 21b having the same lattice shape as the core support portion 21a is also formed on the other side Z2 of the third direction Z of the bottom portion 21.

[0015] As shown in Figures 2 and 3, two side wall portions 22 are provided at one end Y1 and the other end Y2 of the bottom portion 21 in the second direction Y, extending toward one side Z1 in the third direction Z. The side wall portions 22 are substantially plate-shaped with their surface facing the second direction Y. Each side wall portion 22 is provided to the side of the magnetic core 10 in the second direction Y (see Figure 7). Each side wall portion 22 is provided at one end X1 and the other end X2 in the first direction X, with a substantially plate-shaped insertion plate portion 26. Each insertion plate portion 26 is provided with its surface facing the first direction X. Each insertion plate portion 26 has a long insertion opening 26a formed approximately in the center in the second direction Y, along the third direction Z. A bobbin 50 is placed in the insertion opening 26a, and the busbar 100 is inserted through it.

[0016] As shown in Figure 3, each of the two side wall portions 22 is provided with a biasing member locking portion 25. The biasing member locking portion 25 is formed in a substantially box shape on the outside of the side wall portion 22. One side Z1 of the biasing member locking portion 25 in the third direction Z protrudes outward from the end face 22a of the side wall portion 22 in the third direction Z. The biasing member locking portion 25 on the side Z1 of the side wall portion 22 in the third direction Z is provided with an insertion opening 25t that opens inward. The biasing member locking portion 25 on one side Y1 in the second direction Y and the biasing member locking portion 25 on the other side Y2 are formed symmetrically with respect to the first direction X. In the following, the biasing member locking portion 25 on one side Y1 in the second direction Y will be described, and a detailed explanation of the biasing member locking portion 25 on the other side Y2 will be omitted.

[0017] The biasing member locking portion 25 has two side plates 25a with their plate surfaces facing the first direction X, provided at a predetermined distance in the first direction X. The other side Y2 of the two side plates 25a in the second direction Y is connected to the side wall portion 22. The two side plates 25a protrude one side Z1 beyond the end face 22a of one side Z1 in the third direction Z of the side wall portion 22. The portion of the side plates 25a that protrudes one side Z1 beyond the end face 22a of one side Z1 in the third direction Z of the side wall portion 22 is designated as a regulating wall portion 25f.

[0018] One side Y1 of the two side plates 25a in the second direction Y is connected to the support plate 25b. The support plate 25b is positioned with its surface facing the second direction Y. The length of the support plate 25b in the third direction Z is the same as the length of the side plate 25a in the third direction Z. The support plate 25b and the two side plates 25a are each connected to the locking plate 25c on one side Z1 of the third direction Z. The locking plate 25c is positioned with its surface facing the third direction Z. The locking plate 25c is formed to be long along the first direction X.

[0019] As shown in Figures 3 and 4, the other side Z2 of the locking plate 25c in the third direction Z is provided with a locking projection 25d that protrudes toward the other side Z2. The bent end 46 of the leaf spring 40 locks onto the locking projection 25d (see Figures 6 and 7). The locking projection 25d is provided on the other side Y2 of the locking plate 25c in the second direction Y. The locking projection 25d is provided in an elongated shape along the first direction X so as to connect to the two side plates 25a (regulating wall portions 25f). That is, the regulating wall portions 25f are provided at both ends of the locking projection 25d along the first direction X. As shown in Figure 4, the locking projection 25d has a guide inclined surface 25d1 that is inclined on the magnetic core 10 side. The guide inclined surface 25d1 is inclined from the other side Y2 in the second direction Y along the one side Y1 (in other words, from the inside to the outside of the side wall portion 22) toward the other side Z2 in the third direction Z from one side Z1. The other side Y2 in the second direction Y on the guide inclined surface 25d1 is connected to the end face 25c1 of the other side Y2 in the second direction Y on the locking plate 25c. The one side Y1 in the second direction Y on the guide inclined surface 25d1 is connected to the jaw surface 25d3 via the tip 25d2 of the locking projection 25d. The jaw surface 25d3 is formed as a surface parallel to the plane including the first direction X and the third direction Z. The end face 25f1 of the other side Y2 (i.e., the inside) in the second direction Y of the regulating wall portion 25f is located on the same plane as the inner surface of the side wall portion 22 and is provided continuously. Therefore, the end face 25f1 of the restricting wall portion 25f protrudes inward, which is the other side Y2 in the second direction Y, compared to the end face 25c1 of the locking plate 25c.

[0020] As shown in Figure 2, the two bobbins 50 are arranged facing each other along the third direction Z. The two bobbins 50 are identical in shape. As shown in Figure 5, the bobbin 50 has two spaced-apart side plates 51a and 51b, and a partition plate 52 provided 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 5). The height of the side plate 51a on one side Y1 in the second direction Y, as shown in Figure 5, is higher than the height of 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.

[0021] 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 7). 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).

[0022] As shown in Figure 6, the leaf spring 40 is formed in the shape of a substantially rectangular plate with the second direction Y as its longitudinal direction. The leaf spring 40 is formed in a substantially concave shape from sheet metal material. The central portion of the leaf spring 40 in the second direction Y is formed in a substantially flat shape and serves as a biasing contact portion 41 that abuts against the second core 12. The biasing contact portion 41 is formed in a substantially rectangular shape that is long in the first direction X. At the ends of the biasing contact portion 41 on one side X1 and the other side X2 in the first direction X, there are bent portions 41b that bend toward one side Z1 in the third direction Z. At the ends of the biasing contact portion 41 on one side Y1 and the other side Y2 in the second direction Y, there are inclined contact portions 42. Each inclined contact portion 42 is formed by bending so that it is inclined toward one side Z1 in the third direction Z from the biasing contact portion 41. In other words, the inclined contact portion 42 is formed to be inclined from one end 42a on one side Y1 and the other end 42a on the leaf spring 40 toward the biasing contact portion 41 along the second direction Y, and toward the other end 42a on the third direction Z, toward the other end 42a on the third direction Z.

[0023] The end 42a of each inclined contact portion 42 is formed in a straight line along the first direction X. A bent end portion 46 is formed at the end 42a of each inclined contact portion 42. The bent end portion 46 has a bent base portion 46a that bends slightly toward the other side Z2 of the third direction Z with respect to the inclination direction of the inclined contact portion 42, and a bent locking portion 46b that bends from the bent base portion 46a toward one side Z1 of the third direction Z. The bent locking portion 46b has a bent portion 46b1 that connects to the bent base portion 46a, and a rising portion 46b2 that rises from the bent portion 46b1 toward one side Z1 of the third direction Z.

[0024] Furthermore, the inclined contact portion 42B on one side Y1 in the second direction Y is provided with a mounting regulating plate portion 47 that protrudes in a flat shape from the edge of one side X1 in the first direction X near the bending base portion 46a of the bent end portion 46.

[0025] As shown in Figure 7, when the leaf spring 40 is assembled to the base member 20, the surface 41a on the other side Z2 in the third direction Z of the biasing contact portion 41 of the leaf spring 40 abuts against the surface 12a on one side Z1 of the second core 12. The bent end portion 46 of the leaf spring 40 is locked with the locking projection 25d of the biasing member locking portion 25. More specifically, the tip 25d2 of the locking projection 25d abuts against the bent portion 46b1 of the bending locking portion 46b of the bent end portion 46, and the rising portion 46b2 of the bending locking portion 46b faces the jaw surface 25d3 of the locking projection 25d in the second direction Y. In this way, by holding both ends of the leaf spring 40 in the second direction Y, the ends 42a of the two opposing inclined contact portions 42 along the second direction Y are held in a state where they have moved from the steady state to the other side Z2 in the third direction Z against the biasing force of the inclined contact portions 42 of the leaf spring 40. That is, the leaf spring 40 is held in a biased state. On the other hand, the first core 11 is supported by the core support portion 21a at the bottom 21 of the base member 20A. Therefore, the leaf spring 40 biases the second core 12 toward the other side Z2 in the third direction Z (i.e., toward the first core 11).

[0026] The leaf spring 40 is assembled as follows. First, as shown in Figure 8, the leaf spring 40 is placed on the second core 12 from one side Z1 in the third direction Z, relative to the base member 20 which houses the magnetic core 10 and the two bobbins 50 through which the busbar 100 is inserted. At this time, the leaf spring 40 is oriented so that its longitudinal direction (i.e., the end 42a of the leaf spring 40) is aligned with the second direction Y. Then, as shown in Figure 9, the end 42a of the leaf spring 40 on the other side Y2 in the second direction Y is inserted into the insertion opening 23t of the biasing member locking portion 25 on the other side Y2 in the second direction Y. At this time, it is preferable to insert the inclined contact portion 42 into the insertion opening 23t by sliding it in, bringing into contact the surface 42b on the other side Z2 in the third direction Z of the inclined contact portion 42 of the leaf spring 40 that is inserted into the insertion opening 23t, with the surface 12a on the one side Z1 in the third direction Z of the second core 12. Then, the inclined contact portion 42 on one side Y1 in the second direction Y of the leaf spring 40 is pushed toward the other side Z2 in the third direction Z, that is, the bent end portion 46 on one side Y1 in the second direction Y of the leaf spring 40 toward the biasing member locking portion 25. When the bent end portion 46 of the pushed-in leaf spring 40 is pushed toward the outer surface 46b3 of the bent locking portion 46b that slides against the end surface 25c1 of the locking plate 25c, the bent base portion 46a is elastically curved. Then, the bending locking portion 46b is guided by the guide inclined surface 25d1 of the locking projection 25d, which causes the tip of the bending locking portion 46b to slide against it, and the tip 25d2 of the locking projection 25d fits inside the bent portion 46b1 of the bending locking portion 46b. On the other hand, the bent end 46 on the other side Y2 in the second direction Y of the leaf spring 40 moves to the one side Z1 in the third direction Z by pushing the bent end 46 on one side Y1 into the biasing member locking portion 25, and locks into the locking projection 25d. In this way, the bent ends 46 at both ends of the leaf spring 40 are locked into the locking projection 25d of the biasing member locking portion 25, resulting in the state shown in Figure 7.

[0027] [Second Embodiment] Next, the second embodiment will be described with reference to Figures 10 to 15. As shown in Figures 10 and 11, the magnetic unit 1A of this embodiment is a leaf spring 40A, which replaces the leaf spring 40 of the first embodiment by having a bent end 46 on one inclined contact portion 42 and a biasing member side inclined contact surface 43 on the other inclined contact portion 42. Furthermore, the magnetic unit 1A of this embodiment is a base member 20A, which replaces the base member 20 of the first embodiment, which has biasing member locking portions 25 on both sides of the second direction Y, one side Y1 and the other side Y2, with a biasing member locking portion 25 on one side Y1 of the second direction Y, and a biasing member holding portion 23 on the other side Y2, which has a side wall side inclined contact surface 23d that locks with the biasing member side inclined contact surface 43 of the leaf spring 40A.Hereafter, the same reference numerals will be used for the same members and parts as in the first embodiment, and their descriptions will be omitted or simplified.

[0028] A biasing member locking portion 25 is provided on the side wall portion 22 of the base member 20A on one side Y1 in the second direction Y. A biasing member holding portion 23 is provided on the side wall portion 22 of the base member 20A on the other side Y2 in the second direction Y. Two side plates 23a are provided on the biasing member holding portion 23 with their plate surfaces facing the first direction X, spaced apart in the first direction X. One side Y1 of the two side plates 23a in the second direction Y is connected to the side wall portion 22. The other side Y2 of the two side plates 23a in the second direction Y is connected to the support plate 23b. The support plate 23b is provided with its plate surface facing the second direction Y. The length of the support plate 23b along the third direction Z is the same as that of the two side plates 23a. The support plate 23b and the two side plates 23a are each connected to the locking plate 23c on one side Z1 in the third direction Z. The locking plate 23c is positioned with its plate surface facing the third direction Z. The locking plate 23c is formed to be elongated along the first direction X.

[0029] A side wall-side inclined contact surface 23d is provided on the other side Z2 of the locking plate 23c in the third direction Z (see Figure 12). The side wall-side inclined contact surface 23d is formed inclined from one side Z1 toward the other side Z2 in the third direction Z, along the other side Y2 toward one side Y1 in the second direction Y (in other words, along the direction from the outside to the inside of the side wall portion 22). The side wall-side inclined contact surface 23d is formed to be long along the first direction X. A regulating wall portion 23f is provided on one side X1 and the other side X2 in the first direction X of the side wall-side inclined contact surface 23d (i.e., both ends of the side wall-side inclined contact surface 23d). Therefore, the internal space of the biasing member holding portion 23 is closed off on the outside of the biasing member holding portion 23 and in the direction along the first direction X. The restricting wall portion 23f is defined as the portion of the side plate 23a that protrudes to one side Z1 beyond the end face 22a of one side Z1 in the third direction Z of the side wall portion 22. Therefore, the restricting wall portion 23f is considered to be part of the side plate 23a. The biasing member holding portion 23 is an opening on one side Z1 beyond the end face 22a of one side Z1 in the third direction Z of the side wall portion 22, and is defined as the insertion opening 23t. In this embodiment, the inner end face 23f1 of the restricting wall portion 23f is located on the same plane as the inner surface of the side wall portion 22 and is continuous (see also Figure 12). Therefore, the inner end face 23f1 of the restricting wall portion 23f protrudes inward beyond the inner end face 23c1 of the locking plate 23c.

[0030] As shown in Figure 11, the leaf spring 40A is formed in the shape of a substantially rectangular plate with the second direction Y as the longitudinal direction. The leaf spring 40A is formed in a substantially concave shape from sheet metal material. The leaf spring 40A has a biasing contact portion 41 that abuts against the second core 12, and inclined contact portions 42 provided on one side Y1 and the other side Y2 of the biasing contact portion 41 in the second direction Y. The inclined contact portion 42 is formed to be inclined from each end 42a of the leaf spring 40A, one side Y1 and the other side Y2, toward the biasing contact portion 41 along the second direction Y, toward one side Z1 and the other side Z2 in the third direction Z. The inclined contact portion 42 on one side Y1 in the second direction Y has a bent end portion 46 formed at the end portion 42a. The end portion 42a of the inclined contact portion 42 on the other side Y2 in the second direction Y is formed in a substantially straight line along the first direction X and is a bent portion 42a1 that is bent in the direction of the other side Z2 in the substantially third direction Z. The surface near the end portion 42a of the inclined contact portion 42 on one side Z1 in the third direction Z of the inclined contact portion 42 on the other side Y2 in the second direction Y is the biasing member side inclined contact surface 43. The biasing member side inclined contact surface 43 is formed to be inclined from the end portion 42a of the inclined contact portion 42 toward the biasing contact portion 41 along the second direction Y, and toward one side Z1 toward the other side Z2 in the third direction Z.

[0031] As shown in Figure 12, when the leaf spring 40A is assembled to the base member 20A, the surface 41a on the other side Z2 in the third direction Z of the biasing contact portion 41 of the leaf spring 40A abuts against the surface 12a on one side Z1 of the second core 12. The bent end 46 of the inclined contact portion 42 on one side Y1 in the second direction Y of the leaf spring 40A is locked with the locking projection 25d of the biasing member locking portion 25. The biasing member side inclined contact surface 43 of the inclined contact portion 42 on the other side Y2 in the second direction Y of the leaf spring 40A abuts (surface contact) with the side wall side inclined contact surface 23d of the biasing member holding portion 23. In this way, by holding both ends of the leaf spring 40A in the second direction Y, the ends 42a of the two opposing inclined contact portions 42 along the second direction Y are held in a state where they have moved from the steady state to the other side Z2 in the third direction Z against the biasing force of the inclined contact portions 42 of the leaf spring 40A. That is, the leaf spring 40A is held in a biased state. On the other hand, the first core 11 is supported by the core support portion 21a at the bottom 21 of the base member 20A. Therefore, the leaf spring 40A biases the second core 12 toward the other side Z2 in the third direction Z (i.e., toward the first core 11).

[0032] The leaf spring 40A is assembled as follows. First, as shown in Figure 13, the leaf spring 40A is placed on the second core 12 from one side Z1 in the third direction Z, relative to the base member 20A which houses the magnetic core 10 and the two bobbins 50 through which the busbar 100 is inserted. At this time, the leaf spring 40A is oriented so that its longitudinal direction (i.e., the end 42a of the leaf spring 40A) is aligned with the second direction Y. Then, as shown in Figure 14, the end 42a (bent portion 42a1) of the leaf spring 40A on the other side Y2 in the second direction Y is inserted into the insertion opening 23t of the biasing member holding portion 23. Insertion of the end 42a on the other side Y2 in the second direction Y of the leaf spring 40A is performed by positioning the inclined contact portion 42 on the other side Y2 in the second direction Y such that the biasing member side inclined contact surface 43 and the side wall side inclined contact surface 23d of the leaf spring 40A are substantially opposite each other in the third direction Z. At this time, it is preferable and easier to work with if the leaf spring 40A is inserted into the insertion opening 23t by bringing the surface 42b on the other side Z2 in the third direction Z of the inclined contact portion 42, which has the biasing member side inclined contact surface 43, into contact with the surface 12a on one side Z1 in the third direction Z of the second core 12, and sliding the inclined contact portion 42, which has the biasing member side inclined contact surface 43, into contact with the surface 12a on one side Z1 in the third direction Z of the second core 12. Then, the inclined contact portion 42 on one side Y1 in the second direction Y of the leaf spring 40A is pushed toward the other side Z2 in the third direction Z, that is, the bent end portion 46 of the leaf spring 40A is pushed toward the biasing member locking portion 25. At this time, the biasing member side inclined contact surface 43 of the leaf spring 40A moves toward one side Z1 in the third direction Z, and the biasing member side inclined contact surface 43 and the side wall side inclined contact surface 23d come into contact (surface contact). Meanwhile, the bent end portion 46 of the pushed-in leaf spring 40A is locked into the locking projection 25d. In this way, the leaf spring 40A is in the state shown in Figure 20, where both ends are locked and held in a biased state.

[0033] On the other hand, incorrect assembly of the leaf spring 40A is reduced by the interference of the mounting restricting plate portion 47 of the leaf spring 40A with the biasing member holding portion 23. For example, as shown in Figure 15, when attempting to attach the leaf spring 40A to the base member 20A with the bent end portion 46 of the leaf spring 40A facing the other side Y2 of the second direction Y, and the inclined contact portion 42 on which the biasing member side inclined contact surface 43 is provided facing the one side Y1 of the second direction Y, the mounting restricting plate portion 47 of the leaf spring 40A will interfere with the restricting wall portion 23f of the biasing member holding portion 23. Therefore, the leaf spring 40A will not be attached to the base member 20A in the wrong longitudinal direction, and problems such as the leaf spring 40A coming off due to such incorrect assembly are reduced.

[0034] The magnetic material units 1 and 1A described above include a first core 11 and a second core 12 formed in an annular shape around a first direction X and divided along a second direction Y intersecting the first direction X, a magnetic material core 10 in which the second core 12 provided on one side Z1 of the third direction Z intersecting the first direction X and the second direction Y and the first core 11 provided on the other side Z2 of the third direction Z abut along the third direction Z, a bottom portion 21 that houses the magnetic material core 10 and supports the first core 11, and a side wall portion 22 provided on the side of the magnetic material core 10 in the second direction Y. The device comprises base members 20, 20A and leaf springs 40, 40A, which are biasing members whose end 42a in the second direction Y is held by the side wall portion 22 and which bias the second core 12 toward the other side Z2 in the third direction Z. The side wall portion 22 has a biasing member locking portion 25 that locks onto the end 42a of the leaf springs 40, 40A. The leaf springs 40, 40A have a bent end 46 which is the end 42a bent toward one side Z1 in the third direction Z, and the biasing member locking portion 25 has a locking projection 25d that protrudes toward the other side Z2 in the third direction Z to lock onto the bent end 46.

[0035] As a result, the bent ends 46 of the leaf springs 40 and 40A are locked together with the locking projections 25d of the biasing member locking portion 25, ensuring that the ends 42a of the leaf springs 40 and 40A are securely locked and held in place, thus preventing the leaf springs 40 and 40A from shifting position. Furthermore, when assembling the leaf springs 40 and 40A, there is no need for a subassembly such as attaching the leaf springs to a cover; it is simply a matter of pushing in the bent ends 46 of the leaf springs 40 and 40A or inserting them into the insertion openings 25t, thus improving work efficiency. In this way, a configuration in which the biasing member leaf springs 40 and 40A are assembled to the base members 20 and 20A, which serve as cases, can be properly realized.

[0036] Furthermore, the locking projection 25d has a guide inclined surface 25d1 that is inclined on the magnetic core 10 side in the second direction Y. This allows the bent ends 46 of the leaf springs 40, 40A to be guided and smoothly locked into the locking projection 25d when they are pushed from one side Z1 to the other side Z2 in the third direction Z.

[0037] Furthermore, the leaf spring 40 is provided with bent ends 46 at both ends in the second direction Y, and the biasing member locking portion 25 is provided on each of the side wall portions 22 provided on one side Y1 and the other side Y2 in the second direction Y. As a result, for example, the bent end 46 on one side Y1 in the second direction Y of the leaf spring 40 can be inserted into the insertion opening 25t of the biasing member locking portion 25 to lock the bent end 46 to the locking projection 25d from the other side Z2 in the third direction Z, and the bent end 46 on the other side Y2 can be pushed in to lock the locking projection 25d.

[0038] Furthermore, the leaf spring 40A has a biasing contact portion 41 that contacts the second core 12, an inclined contact portion 42 that slopes from one end Y1 and the other end Y2 of the second direction Y toward the biasing contact portion 41 along the second direction Y, toward one end Z1 and the other end Z2 of the third direction Z, a bent end portion 46 provided on the inclined contact portion 42 on one end Y1 of the second direction Y, and an inclined contact portion on the other end Y2 of the second direction Y The biasing member locking portion 25 has a biasing member side inclined contact surface 43 formed on one side Z1 of the contact portion 42 in the third direction Z, and the biasing member holding portion 23 is provided on the side wall portion 22 on one side Y1 in the second direction Y, and the biasing member holding portion 23 has a side wall portion side inclined contact surface 23d formed at an angle so as to contact the biasing member side inclined contact surface 43 when the leaf spring 40A is biased.

[0039] As a result, one end of the leaf spring 40A is held by the locking of the bent end 46 and the locking projection 25d, and the other end of the leaf spring 40A is held by the surface contact between the biasing member side inclined contact surface 43, which is an inclined surface, and the side wall side inclined contact surface 23d.Therefore, for example, the other end 42a of the leaf spring 40A, which is only made to make surface contact, can be slid in, and the other end 42a can be pushed in to lock the bent end 46 and the locking projection 25d.

[0040] 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.

[0041] In the above description, the side walls 22 of the base members 20 and 20A are provided on one side Y1 and the other side Y2 in the second direction Y. However, it is also possible to provide the side walls 22 (and the biasing member locking portion 25 provided on the side walls 22) on only one side, and to use the other side to lock the end portion 42a of the leaf springs 40 and 40A. Furthermore, although leaf springs 40 and 40A were used as the biasing members, other forms of biasing members can also be used.

[0042] 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]

[0043] 1,1A: Magnetic material unit 10: Magnetic core 11: First Core 12: Second Core 20,20A: Base member 21: Bottom 22: Side wall section 23: Biasing member holding part 23d: Side wall side inclined contact surface 25: Biasing member locking part 25d: Locking protrusion 25d1: Guide inclined surface 41: Forced contact part 42: Inclined contact part 42a: End 43: Slanted contact surface on biasing member side 46: Folded end 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 second core provided on one side of a third direction intersecting the first and second directions and the first core provided on the other side of the third direction abut along the third direction, A base member having a bottom portion that houses the magnetic core and supports the first core, and a side wall portion provided on the side of the magnetic core in the second direction, A biasing member whose end in the second direction is held by the side wall and which biases the second core to the other side in the third direction, Equipped with, The side wall portion has a biasing member locking portion that locks onto the end of the biasing member, The biasing member has a bent end which is an end that is bent toward one side in the third direction, The biasing member locking portion has a locking projection that protrudes to the other side in the third direction so as to lock with the bent end. Magnetic material unit.

2. The locking projection has a guide inclined surface that is inclined on the magnetic core side in the second direction. The magnetic material unit according to claim 1.

3. The biasing member is provided with the bent ends at both ends in the second direction, The biasing member locking portion is provided on each of the side wall portions provided on one side and the other side in the second direction, A magnetic material unit according to claim 1 or claim 2.

4. The biasing member has a biasing contact portion that abuts the second core, an inclined contact portion that slopes from one end on one side and the other end on the second direction toward the biasing contact portion along the second direction, and from one side on the third direction toward the other, a bent end portion provided on the inclined contact portion on one side of the second direction, and a biasing member side inclined contact surface formed on the surface on one side of the third direction of the inclined contact portion on the other side of the second direction, The biasing member locking portion is provided on the side wall portion on one side in the second direction, The other side of the second direction is provided with a biasing member holding portion having a side wall inclined contact surface that is inclined to contact the biasing member side inclined contact surface when the biasing member is in a biased state. A magnetic material unit according to claim 1 or claim 2.

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