current sensor

Abstract

The current sensor of the present application includes an upper shield case, a lower shield case, a press-in member, and an inner side member. The upper shield case has at least an upper surface and an upper side outer peripheral portion. The upper side outer peripheral portion extends downward from an outer edge of the upper surface in the vertical direction. The lower shield case has at least a lower surface and a lower side outer peripheral portion. The lower side outer peripheral portion extends upward from an outer edge of the lower surface in the vertical direction. The upper shield case and the lower shield case constitute a housing portion. The press-in member has a main body portion. The main body portion presses both the upper side outer peripheral portion and the lower side outer peripheral portion outward in a horizontal plane orthogonal to the vertical direction to integrally fix the upper shield case and the lower shield case.

Description

Technical Field

[0001] This invention relates to a current sensor having a coil and a magnetic core. Background Technology

[0002] As such a current sensor, there is a current sensor disclosed in Patent Document 1. For example... Figure 34 and Figure 35 As shown, the current sensor 900 of Patent Document 1 includes a substrate 910, a core 920, and a Hall element 930. The substrate 910 has an annular portion 912 and a protruding portion 914. The core 920 includes an annular magnetic core 922, a coil (not shown), and insulating tape 926. The coil is wound around the annular magnetic core 922. The insulating tape 926 of the core 920 is wound around the annular portion 912 of the substrate 910, thereby integrally fixing the core 920 and the substrate 910.

[0003] In the current sensor 900 of Patent Document 1, since the core 920 and the substrate 910 are integrally fixed, it is not necessary to inject polyurethane resin or the like.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent document 1: Japanese Patent Application Publication No. 2003-017347. Summary of the Invention

[0007] The problem the invention aims to solve

[0008] The purpose of this invention is to provide a current sensor with a structure that does not require injection, which is different from the current sensor 900 in Patent Document 1.

[0009] Solution for solving the problem

[0010] One aspect of the present invention provides a current sensor comprising an upper shielding shell, a lower shielding shell, a press-in member, and an inner member. The upper shielding shell has at least an upper surface and an upper outer periphery. The upper surface has an opening on its inner side. The upper outer periphery extends downwardly from the outer edge of the upper surface in a vertical direction. The lower shielding shell has at least a lower surface and a lower outer periphery. The lower surface has an opening on its inner side. The lower outer periphery extends upwardly from the outer edge of the lower surface in the vertical direction. At least one of the upper and lower shielding shells has an inner periphery extending from the opening of the at least one of the upper and lower shielding shells along the vertical direction. The upper and lower shielding shells constitute a receiving portion. The press-in member has a main body portion. The main body portion presses both the upper and lower outer periphery portions outwardly in a horizontal plane orthogonal to the vertical direction to integrally fix the upper and lower shielding shells. The inner member includes a coil and a magnetic core. The inner component is disposed within the receiving portion between the main body portion and the inner peripheral portion.

[0011] Invention Effects

[0012] In the current sensor of the present invention, the main body of the press-in member presses both the upper and lower outer peripheral portions outward in a horizontal plane orthogonal to the vertical direction to integrally fix the upper and lower shielding shells. Therefore, the current sensor of the present invention does not require the injection of polyurethane resin or the like.

[0013] The purpose of the invention and its structure will be correctly understood and more fully understood by referring to the accompanying drawings and the following description of the best embodiments. Attached Figure Description

[0014] Figure 1 This is a perspective view showing the current sensor according to the first embodiment of the present invention.

[0015] Figure 2 It is shown Figure 1 A front view of the current sensor.

[0016] Figure 3 It is shown Figure 1 Rear view of the current sensor.

[0017] Figure 4 It is shown Figure 1 A top view of the current sensor.

[0018] Figure 5 It is shown Figure 1 A bottom view of the current sensor.

[0019] Figure 6 It is shown Figure 1Side view of the current sensor.

[0020] Figure 7 It is shown Figure 1 An exploded perspective view of the current sensor, in which the ends of the coil are omitted.

[0021] Figure 8 It is shown Figure 7 The figure shows a front view of the core component of the current sensor, with the ends of the coil omitted in the figure.

[0022] Figure 9 It is shown Figure 8 Rear view of the core component.

[0023] Figure 10 It is shown Figure 8 A top view of the core component.

[0024] Figure 11 It is shown Figure 10 A cross-sectional view of the core component along line AA, with the ends of the coil omitted in the figure, and a portion of the core component shown in magnification.

[0025] Figure 12 It is shown Figure 10 A cross-sectional view of the core component along line BB, with a portion of the core component shown in the figure enlarged.

[0026] Figure 13 It is shown Figure 10 A cross-sectional view of the core component along line CC, with a portion of the core component shown in the figure enlarged.

[0027] Figure 14 It is shown Figure 10 A cross-sectional view of the core component along line DD, with a portion of the core component shown in the figure enlarged.

[0028] Figure 15 It is shown Figure 8 A bottom view of the core component.

[0029] Figure 16 It is shown Figure 8 Side view of the core component.

[0030] Figure 17 It is shown Figure 8 An exploded 3D view of the core component.

[0031] Figure 18 It is shown Figure 17 A perspective view of the shielding shell composite included in the core component, in which the upper shielding shell and the lower shielding shell are pressed into the press-in member.

[0032] Figure 19 It is shown Figure 18 Another perspective view of the shielding shell composite shows that the lower shielding shell is pressed into the pressing member, but the upper shielding shell is not pressed into the pressing member.

[0033] Figure 20 It is shown Figure 18 A top view of the shielding shell composite.

[0034] Figure 21 It is shown Figure 20 A cross-sectional view of the shielding shell composite along line EE, with a portion of the shielding shell composite shown in the figure enlarged.

[0035] Figure 22 It is shown Figure 20 A cross-sectional view of the shielding shell composite along line FF.

[0036] Figure 23 It is shown Figure 20 A cross-sectional view of the shielding shell composite along line GG, with a portion of the shielding shell composite enlarged in the figure.

[0037] Figure 24 This is a perspective view showing the core component included in the current sensor according to the second embodiment of the present invention, in which the upper shielding shell and the lower shielding shell are pressed into the pressing member.

[0038] Figure 25 It is shown Figure 24 A top view of the core component.

[0039] Figure 26 It is shown Figure 25 A cross-sectional view of the core component along line HH, with a portion of the core component shown in the figure enlarged.

[0040] Figure 27 It is shown Figure 25 A top view of the shielding shell composite contained in the core component.

[0041] Figure 28 It is shown Figure 27 A cross-sectional view of the shielding shell composite along line II.

[0042] Figure 29 It is shown Figure 28 A cross-sectional view of the shielding shell composite, in which a portion of the shielding shell composite is shown enlarged.

[0043] Figure 30 It is shown Figure 28 A cross-sectional view of the shielding shell composite, with an enlarged view of a portion of the shielding shell composite shown in the figure.

[0044] Figure 31 It is shown Figure 27An exploded three-dimensional view of the shielding shell composite.

[0045] Figure 32 It is shown Figure 31 A three-dimensional view of the press-fit components contained in the shielding shell composite.

[0046] Figure 33 It is shown Figure 32 Another perspective view of the press-in component.

[0047] Figure 34 This is a top view showing the current sensor of Patent Document 1.

[0048] Figure 35 It is shown Figure 34 A top view of the substrate and Hall element contained in the current sensor. Detailed Implementation

[0049] The present invention can be implemented in many variations and in various ways. As one example, a specific embodiment as shown in the accompanying drawings will be described in detail below. The drawings and embodiments are not limited to the specific embodiments disclosed in the present invention, but include all variations, equivalents, and alternatives within the scope expressly shown in the appended claims.

[0050] (First Implementation)

[0051] from Figure 7 and Figure 17 As can be seen, the current sensor 100 of the first embodiment of the present invention includes an upper shielding shell 200, a lower shielding shell 300, a press-in member 500, an inner member 600, a substrate 700, an outer shell 750, a housing 800, and a busbar 820. Here, the upper shielding shell 200, the lower shielding shell 300, and the press-in member 500 constitute a shielding shell composite 580.

[0052] Reference Figure 17 In this embodiment, the upper shielding shell 200 is made of metal. The upper shielding shell 200 has: an upper surface 210 with an opening 212 on its inner side; an upper outer peripheral portion 220 extending downward from the outer edge of the upper surface 210 in a vertical direction; an upper inner peripheral portion (inner peripheral portion) 230; and an upper connecting portion 240. In this embodiment, the vertical direction is the Z direction. Here, the upper direction is +Z, and the lower direction is -Z. However, the invention is not limited to this; the upper shielding shell 200 may not have the upper inner peripheral portion 230. That is, the upper shielding shell 200 only needs to have an upper surface 210 and an upper outer peripheral portion 220, the upper surface 210 having an opening 212 on its inner side, and the upper outer peripheral portion 220 extending downward from the outer edge of the upper surface 210 in a vertical direction. Figure 20As shown, when viewed in the vertical direction, the upper shielding shell 200 has an annular shape. However, the invention is not limited to this, and the shape of the upper shielding shell 200 is not particularly limited. Furthermore, the upper shielding shell 200 can be made of soft magnetic materials such as permalloy, silicon steel, or pure iron.

[0053] Reference Figure 17 In this embodiment, the upper surface 210 is orthogonal to the vertical direction. The upper surface 210 has an annular shape with an axis parallel to the vertical direction. However, the invention is not limited thereto, and the shape of the upper surface 210 is not particularly limited.

[0054] Reference Figure 17 In this embodiment, the opening 212 is circular with an axis parallel to the vertical direction. However, the invention is not limited to this, and the shape of the opening 212 is not particularly limited. The upper surface 210 and the opening 212 are located on the same axis. The opening 212 is located radially inward of the axis relative to the upper surface 210.

[0055] Reference Figure 17 In this embodiment, the upper outer peripheral portion 220 extends downward in the upward and downward direction from the radial outer edge of the upper surface 210.

[0056] Reference Figure 17 In this embodiment, the upper inner peripheral portion 230 extends downward in the vertical direction from the radial inner edge of the upper surface 210. The upper inner peripheral portion 230 is located radially outside the opening 212. The inner peripheral portion 230 extends vertically from the opening 212.

[0057] Reference Figure 17 In this embodiment, the upper connecting portion 240 is an opening that penetrates the upper outer peripheral portion 220 in a radial direction orthogonal to the vertical direction. The upper outer peripheral portion 220 is interrupted by the upper connecting portion 240 in the circumferential direction of the axis of the upper surface 210. That is, the circumferential continuity of the upper surface 210 of the upper outer peripheral portion 220 is interrupted by the upper connecting portion 240.

[0058] Reference Figure 17 In this embodiment, the lower shielding shell 300 is made of metal. The lower shielding shell 300 has: a lower surface 310 with an opening 312 on its inner side; a lower outer peripheral portion 320 extending upward from the outer edge of the lower surface 310 in a vertical direction; a lower inner peripheral portion (inner peripheral portion) 330; and a lower connecting portion 340. However, the invention is not limited to this; the lower shielding shell 300 may also omit the lower inner peripheral portion 330. That is, the lower shielding shell 300 may at least have a lower surface 310 and a lower outer peripheral portion 320, the lower surface 310 having an opening 312 on its inner side, and the lower outer peripheral portion 320 extending upward from the outer edge of the lower surface 310 in a vertical direction. Figure 15As shown, when viewed in the vertical direction, the lower shielding shell 300 has an annular shape. However, the invention is not limited to this, and the shape of the lower shielding shell 300 is not particularly limited. Furthermore, the lower shielding shell 300 can be made of soft magnetic materials such as permalloy, silicon steel, or pure iron.

[0059] Reference Figure 17 In this embodiment, the lower surface 310 is orthogonal to the vertical direction. The lower surface 310 has an annular shape with an axis parallel to the vertical direction. However, the invention is not limited thereto, and the shape of the lower surface 310 is not particularly limited.

[0060] Reference Figure 17 In this embodiment, the opening 312 is circular with an axis parallel to the vertical direction. However, the invention is not limited to this, and the shape of the opening 312 is not particularly limited. The lower surface 310 and the opening 312 are located on the same axis. The opening 312 is located radially inward of the axis relative to the lower surface 310.

[0061] Reference Figure 17 In this embodiment, the lower outer peripheral portion 320 extends upward in the upward and downward direction from the radial outer edge of the lower surface 310.

[0062] Reference Figure 17 In this embodiment, the lower inner peripheral portion 330 extends upward in the vertical direction from the radial inner edge of the lower surface 310. The lower inner peripheral portion 330 is located radially outside the opening 312. The inner peripheral portion 330 extends vertically from the opening 312.

[0063] Reference Figure 17 In this embodiment, the lower connecting portion 340 is an opening that penetrates the lower outer peripheral portion 320 radially. The lower outer peripheral portion 320 is interrupted in the circumferential direction of the lower surface 310 along its axis by the lower connecting portion 340. That is, the circumferential continuity of the lower surface 310 of the lower outer peripheral portion 320 is interrupted by the lower connecting portion 340.

[0064] As described above, the upper shielding shell 200 has an inner peripheral portion 230 extending vertically from the opening 212, and the lower shielding shell 300 has an inner peripheral portion 330 extending vertically from the opening 312; however, the present invention is not limited thereto. That is, at least one of the upper shielding shell 200 and the lower shielding shell 300 may have an inner peripheral portion 230 or 330 extending vertically from the openings 212 and 312 of the upper shielding shell 200 and the lower shielding shell 300, respectively.

[0065] like Figure 21 As shown, the upper shielding shell 200 and the lower shielding shell 300 constitute the receiving part 400. The receiving part 400 is an annular space with an axis parallel to the vertical direction.

[0066] Reference Figure 22 In this embodiment, the press-in member 500 is made of resin. The press-in member 500 is pressed into the upper shielding shell 200. Furthermore, the press-in member 500 is pressed into the lower shielding shell 300. The press-in member 500 has a main body portion 510.

[0067] like Figure 17 As shown, the main body 510 of this embodiment has a cylindrical shape extending in the vertical direction. (Refer to...) Figure 17 , Figure 19 and Figure 22 The main body 510 is elastic and can flex inward in a radial direction orthogonal to the vertical direction. That is, because the main body 510 is elastic, it can return to its original state even when flexed inward in a radial direction. In other words, the main body 510 has a restoring force relative to radial external forces.

[0068] like Figure 13 As shown, the main body 510 presses the upper outer periphery 220 and the lower outer periphery 320 outward in a horizontal plane orthogonal to the vertical direction to integrally fix the upper shielding shell 200 and the lower shielding shell 300. That is, the main body 510 integrally fixes the upper shielding shell 200 and the lower shielding shell 300 using the aforementioned restoring force. The upper shielding shell 200 and the lower shielding shell 300 are integrally fixed by the press-fit member 500. Therefore, the current sensor 100 of this embodiment does not require the filling of polyurethane resin or the like. In this embodiment, the horizontal plane is the XY plane. In the current sensor 100 of this embodiment, when the upper shielding shell 200 and the lower shielding shell 300 are integrally fixed by the press-fit member 500, a gap is formed on the entire circumference between the upper inner periphery 230 of the upper shielding shell 200 and the lower inner periphery 330 of the lower shielding shell 300 in a manner that does not form a short-circuit ring. Alternatively, instead of forming a gap between the upper inner periphery 230 and the lower inner periphery 330, a gap can be formed between the upper outer periphery 220 of the upper shielding shell 200 and the lower outer periphery 320 of the lower shielding shell 300.

[0069] like Figure 17 As shown, a plurality of upper slits 512 and a plurality of lower slits 514 are formed in the main body 510. As a result, the radial inward deflection of the main body 510 becomes greater, and the pressing member 500 is easier to press into the upper shielding shell 200 and the lower shielding shell 300.

[0070] like Figure 17 As shown, in this embodiment, the upper slit 512 extends downward in the vertical direction from the upper end of the main body 510. Furthermore, the upper slit 512 does not reach the lower end of the main body 510.

[0071] like Figure 17As shown, in this embodiment, the lower slit 514 extends upward in the vertical direction from the lower end of the main body 510. Furthermore, the lower slit 514 does not reach the upper end of the main body 510.

[0072] like Figure 17 As shown, the upper slit 512 and the lower slit 514 are arranged alternately in the circumferential direction of the main body 510. As described above, the upper slit 512 does not reach the lower end of the main body 510, and the lower slit 514 does not reach the upper end of the main body 510. Therefore, the main body 510 is not cut off in the circumferential direction by the upper slit 512 and the lower slit 514.

[0073] like Figure 22 As shown, the main body 510 has an upper guide portion 515, a lower guide portion 517, and a pressing portion 518.

[0074] like Figure 22 As shown, in this embodiment, the upper guide portion 515 is located above the press-in portion 518 in the vertical direction. The upper end 5152 of the upper guide portion 515 has a dimension S1 in the horizontal plane that is smaller than the inner surface of the upper outer periphery 220 of the upper shielding shell 200. That is, in the horizontal plane, the dimension S1 of the upper end 5152 of the upper guide portion 515 is smaller than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200.

[0075] like Figure 22As shown, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152 of the upper guide portion 515 has a dimension S1 in the horizontal plane that is smaller than the inner surface of the upper outer periphery 220 of the upper shielding shell 200. That is, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S1 of the upper end 5152 of the upper guide portion 515 is smaller than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200. When the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152 of the upper guide portion 515 does not contact the inner surface of the upper outer periphery 220 in the radial direction. Furthermore, the present invention is not limited thereto. When the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152 of the upper guide portion 515 can also contact the inner surface of the upper outer periphery 220 in the radial direction. That is, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152 of the upper guide portion 515 can also have the same dimension S1 in the horizontal plane as the inner surface of the upper outer periphery 220 of the upper shielding shell 200. In other words, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S1 of the upper end 5152 of the upper guide portion 515 can also be the same as the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200.

[0076] like Figure 22 As shown, in this embodiment, the lower guide portion 517 is located below the press-in portion 518 in the vertical direction. The lower end 5172 of the lower guide portion 517 has a dimension S2 in the horizontal plane that is smaller than the inner surface of the lower outer periphery 320 of the lower shielding shell 300. That is, in the horizontal plane, the dimension S2 of the lower end 5172 of the lower guide portion 517 is smaller than the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300.

[0077] like Figure 22As shown, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172 of the lower guide portion 517 has a dimension S2 in the horizontal plane that is smaller than the inner surface of the lower outer periphery 320 of the lower shielding shell 300. That is, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S2 of the lower end 5172 of the lower guide portion 517 is smaller than the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300. When the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172 of the lower guide portion 517 does not contact the inner surface of the lower outer periphery 320 in the radial direction. Furthermore, the present invention is not limited thereto. When the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172 of the lower guide portion 517 can also contact the inner surface of the lower outer periphery 320 in the radial direction. That is, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172 of the lower guide portion 517 can also have the same dimension S2 in the horizontal plane as the inner surface of the lower outer periphery 320 of the lower shielding shell 300. In other words, when the press-in member 500 is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S2 of the lower end 5172 of the lower guide portion 517 can also be the same as the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300.

[0078] like Figure 22 As shown, in this embodiment, the pressing portion 518 is located between the upper guide portion 515 and the lower guide portion 517 in the vertical direction. The pressing portion 518 is pressed into the inner side of the upper outer peripheral portion 220. The pressing portion 518 is pressed into the inner side of the lower outer peripheral portion 320. The pressing portion 518 contacts the inner surface of the upper outer peripheral portion 220 in the radial direction. The pressing portion 518 contacts the inner surface of the lower outer peripheral portion 320 in the radial direction.

[0079] like Figure 22 As shown, the press-in portion 518 has a dimension SP in the horizontal plane that is larger than the upper end 5152 of the upper guide portion 515. That is, in the horizontal plane, the dimension SP of the press-in portion 518 is larger than the dimension S1 of the upper end 5152 of the upper guide portion 515. Furthermore, the press-in portion 518 has a dimension SP in the horizontal plane that is larger than the lower end 5172 of the lower guide portion 517. That is, in the horizontal plane, the dimension SP of the press-in portion 518 is larger than the dimension S2 of the lower end 5172 of the lower guide portion 517.

[0080] Reference Figure 17 and Figure 22When the press-in member 500 is not pressed into the upper shielding shell 200 and the lower shielding shell 300, the press-in portion 518 has a dimension in the horizontal plane that is larger than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200 and the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300. Therefore, pressing the press-in member 500 into the upper shielding shell 200 and the lower shielding shell 300 becomes easier.

[0081] like Figure 19 As shown, an extension section 519 is provided in the main body 510.

[0082] like Figure 19 As shown, in this embodiment, the lead-out portion 519 is a hole that penetrates the main body portion 510 in a radial direction orthogonal to the vertical direction. Furthermore, the lead-out portion 519 is also a groove extending downwards from the upper end of the main body portion 510. The lead-out portion 519 is a hole that penetrates the upper guide portion 515 in a radial direction. The lead-out portion 519 is a hole that penetrates the main body portion 510 in a front-rear direction orthogonal to the vertical direction. That is, the lead-out portion 519 is a hole that penetrates the upper guide portion 515 in the front-rear direction. In this embodiment, the front-rear direction is the X direction. Here, the front is designated as the +X direction, and the rear is designated as the -X direction.

[0083] like Figure 19 As shown, the press-in member 500 also has a terminal base portion 520 and a connecting portion 530.

[0084] like Figure 18 As shown, in this embodiment, the terminal base portion 520 is located on the outer side of both the upper shielding shell 200 and the lower shielding shell 300 in the horizontal plane. Figure 17 As shown, the terminal block portion 520 is located radially outward of the main body portion 510. More specifically, the terminal block portion 520 is located in front of the main body portion 510 in the front-rear direction. The terminal block portion 520 has a plurality of terminals 522.

[0085] Reference Figure 18 In this embodiment, each terminal 522 is made of metal and extends through the terminal base portion 520 in the vertical direction.

[0086] like Figure 19 As shown, in this embodiment, the connecting portion 530 connects the main body portion 510 and the terminal block portion 520. The connecting portion 530 connects the main body portion 510 and the terminal block portion 520 in the front-rear direction. Figure 15 and Figure 19 As shown, the connecting part 530 has two reinforcing parts 532 and a positioning part 534.

[0087] like Figure 20As shown, in this embodiment, the reinforcing portion 532 is located on both sides of the lead-out portion 519 in the left-right direction, which is orthogonal to the vertical and horizontal directions and the front-back direction. In this embodiment, the left-right direction is the Y direction. Here, the right side is designated as the +Y direction, and the left side as the -Y direction. The reinforcing portion 532 has a first wall portion 5322 and a second wall portion 5324.

[0088] like Figure 20 As shown, in this embodiment, the first wall portion 5322 extends outward from the lead-out portion 519 in a horizontal plane. More specifically, the first wall portion 5322 extends forward from the lead-out portion 519 in a front-rear direction. The first wall portion 5322 has a flat plate shape extending in the vertical direction. The first wall portion 5322 is orthogonal to the horizontal direction. (Refer to...) Figure 17 and Figure 20 The first wall portion 5322 of the two reinforcing portions 532 is located circumferentially inside the upper connecting portion 240 of the upper shield shell 200.

[0089] like Figure 20 As shown, a second wall portion 5324 of a reinforcing portion 532 extends from a first wall portion 5322 away from the other reinforcing portion 532. Furthermore, the second wall portion 5324 of the other reinforcing portion 532 also extends from the first wall portion 5322 away from the aforementioned reinforcing portion 532. That is, the second wall portion 5324 of the right-hand reinforcing portion 532 extends from the first wall portion 5322 away from the left-hand reinforcing portion 532, and the second wall portion 5324 of the left-hand reinforcing portion 532 extends from the first wall portion 5322 away from the right-hand reinforcing portion 532. More specifically, the second wall portion 5324 of the right-hand reinforcing portion 532 extends to the right from the first wall portion 5322, and the second wall portion 5324 of the left-hand reinforcing portion 532 extends to the left from the first wall portion 5322. The second wall portion 5324 has a flat plate shape extending in the vertical direction. The second wall portion 5324 is orthogonal to the front-back direction. That is, the extending directions of the second wall portion 5324 are orthogonal to those of the first wall portion 5322. This helps to suppress bending and deformation of the connecting portion 530. (Refer to...) Figure 17 and Figure 20 The second wall portion 5324 is located circumferentially outside the upper connecting portion 240 of the upper shielding shell 200. The second wall portion 5324 is located radially outside the upper shielding shell 200. More specifically, the second wall portion 5324 is located radially outside the upper connecting portion 240 of the upper shielding shell 200. The second wall portion 5324 is located laterally outside the upper connecting portion 240 of the upper shielding shell 200. The corners of the circumferential inner surfaces of the connecting portion between the first wall portion 5322 and the second wall portion 5324 are rounded.

[0090] from Figure 15 and Figure 19It is understood that in this embodiment, the positioning part 534 is located below the reinforcing part 532 in the vertical direction. (See reference...) Figure 15 and Figure 17 The positioning part 534 is located circumferentially inside the lower connecting part 340 of the lower shield shell 300. The lower end portion of the positioning part 534 extends radially inward beyond the radial outer surface of the main body part 510. As a result, bending of the positioning part 534 is suppressed.

[0091] like Figure 11 As shown, in this embodiment, the inner member 600 is disposed within the receiving portion 400 between the main body portion 510 and the inner peripheral portions 230 and 330. The inner member 600 is disposed within the receiving portion 400 between the main body portion 510 and the upper inner peripheral portion 230. The inner member 600 is disposed within the receiving portion 400 between the main body portion 510 and the lower inner peripheral portion 330. (Refer to...) Figure 17 When viewed in the vertical direction, the inner member 600 has a circular shape. However, the invention is not limited to this; the shape of the inner member 600 is not particularly limited. For example… Figure 11 As shown, in the current sensor 100 of this embodiment, the inner member 600 is configured not to contact the pressing member 500. However, the present invention is not limited to this, and the inner member 600 may also contact the pressing member 500. The inner member 600 includes a coil 610, a magnetic core 620, a core shell 630, and a core sponge 640.

[0092] Reference Figure 11 In this embodiment, the coil 610 is wound around the core shell 630. From Figure 10 and Figure 20 As can be seen, the end 612 of the coil 610 is led out to the outside through the lead-out portion 519. Here, as described above, since the angle of the circumferential inner surface of the connecting portion of the first wall portion 5322 and the second wall portion 5324 is rounded, the coil 610 will not break even if the end 612 of the coil 610, which is led out to the outside through the lead-out portion 519, comes into contact with the connecting portion of the first wall portion 5322 and the second wall portion 5324. The end 612 is connected to the terminal 522 of the terminal block portion 520.

[0093] Reference Figure 11 In this embodiment, the magnetic core 620 is a toroidal magnetic core. That is, the inner member 600 has a toroidal magnetic core 620 as the magnetic core 620. However, the present invention is not limited to this, and the magnetic core 620 may also be a core other than a toroidal magnetic core.

[0094] like Figure 11 As shown, the core shell 630 of this embodiment houses the magnetic core 620. The core shell 630 is composed of an upper core shell 632 and a lower core shell 634. The upper core shell 632 is located above the lower core shell 634 in the vertical direction.

[0095] Reference Figure 11 In this embodiment, the core sponge 640 is made of resin. The core sponge 640 is located between the upper core shell 632 and the magnetic core 620 in the vertical direction. That is, the magnetic core 620 is in indirect contact with the upper core shell 632 through the core sponge 640. As a result, the wobbling of the magnetic core 620 is prevented within the core shell 630.

[0096] like Figure 17 As shown, the current sensor 100 also has a sponge 642.

[0097] Reference Figure 17 In this embodiment, the sponge 642 is made of resin. For example... Figure 11 As shown, in this embodiment, the sponge 642 is disposed above the inner member 600 within the receiving portion 400. However, the invention is not limited to this; the sponge 642 may be disposed within the receiving portion 400 on at least one of the upper or lower sides of the inner member 600. The sponge 642 is located vertically between the upper shielding shell 200 and the inner member 600. The inner member 600 indirectly contacts the upper shielding shell 200 through the sponge 642. This prevents the inner member 600 from wobbling within the receiving portion 400.

[0098] Reference Figure 17 The upper shielding shell 200, the lower shielding shell 300, the press-in component 500, the inner component 600, and the sponge 642 constitute the core component 645.

[0099] like Figure 7 As shown, the substrate 700 of this embodiment has a plurality of terminal connection portions 710 and a plurality of pin connection portions 720. The terminal connection portions 710 and the pin connection portions 720 are connected by wiring (not shown) on the substrate 700. The terminal connection portions 710 are connected to the terminals 522 of the terminal base portion 520.

[0100] Reference Figure 5 and Figure 7 In this embodiment, the housing 750 is made of resin and houses the core component 645 and the substrate 700. The housing 750 has a plurality of pins 752. The pins 752 are connected to the pin connection portion 720 of the substrate 700. The lower end of the pin 752 protrudes to the outside of the current sensor 100.

[0101] As described above, the end 612 of the coil 610 is connected to the terminal 522 of the terminal base portion 520, the terminal 522 of the terminal base portion 520 is connected to the terminal connection portion 710 of the substrate 700, the terminal connection portion 710 and the pin connection portion 720 are connected by wiring, and the pin connection portion 720 of the substrate 700 is connected to the pin 752 of the housing 750. Thus, the end 612 of the coil 610 can be electrically connected to the outside of the current sensor 100 through the terminal 522, the substrate 700 and the pin 752.

[0102] Reference Figure 5 and Figure 7 In this embodiment, the housing 800 is made of resin and is located on the outside of the outer shell 750. The housing 800 partially covers the outer shell 750.

[0103] Reference Figure 1 and Figure 7 In this embodiment, the busbar 820 is made of metal and is mounted on the housing 800.

[0104] like Figure 7 As shown, the current sensor 100 also has a housing sponge 650.

[0105] Reference Figure 7 In this embodiment, the housing sponge 650 is made of resin. The housing sponge 650 is located between the housing 800 and the core component 645. This prevents the core component 645 from shaking within the housing 800.

[0106] (Manufacturing method of core components)

[0107] The following is a detailed example of a method for manufacturing the core component 645.

[0108] First, the main body 510 of the press-in component 500 is inserted into the lower shielding shell 300 from above, becoming... Figure 19 In this state, the press-in portion 518 contacts the upper end of the lower shielding shell 300 in the radial direction. That is, at this time, the main body portion 510 of the press-in member 500 is pressed into the lower shielding shell 300.

[0109] As described above, in the horizontal plane, the dimension S2 of the lower end 5172 of the lower guide portion 517 is smaller than the dimension SL of the inner surface of the lower outer periphery 320 of the lower shield shell 300. Furthermore, the dimension SP of the press-in portion 518 is larger than the dimension S2 of the lower end 5172 of the lower guide portion 517. Therefore, when the main body 510 of the press-in member 500 is inserted into the lower shield shell 300, in the initial stage of inserting the lower end 5172 of the lower guide portion 517 of the main body 510 into the lower shield shell 300, the main body 510 is inserted without pressure relative to the lower shield shell 300. When the press-in portion 518 of the main body 510 reaches a position near the upper end of the lower shield shell 300 in the vertical direction, the press-in portion 518 presses the area near the upper end of the lower shield shell 300 radially outward.

[0110] Next, the inner member 600 is inserted radially inside the main body 510 from above. At this time, the end 612 of the coil 610 is led out to the outside through the lead-out portion 519 of the press-in member 500. Then, a sponge 642 is placed on the upper part of the inner member 600.

[0111] In this state, the upper shielding shell 200 is inserted from above into the main body 510 of the pressing member 500, becoming... Figure 7 In this state, the press-in portion 518 contacts the lower end of the upper shielding shell 200 in the radial direction. That is, at this time, the main body portion 510 of the press-in member 500 is pressed into the upper shielding shell 200. In this state, the upper shielding shell 200 and the lower shielding shell 300 are integrally fixed by the press-in member 500.

[0112] As described above, in the horizontal plane, the dimension S1 of the upper end 5152 of the upper guide portion 515 is smaller than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shield shell 200. Furthermore, the dimension SP of the press-in portion 518 is larger than the dimension S1 of the upper end 5152 of the upper guide portion 515. Therefore, when the upper shield shell 200 is inserted into the main body 510 of the press-in member 500, in the initial stage when the upper end 5152 of the upper guide portion 515 of the main body 510 is inserted into the upper shield shell 200, the upper shield shell 200 is inserted without pressure relative to the main body 510. When the press-in portion 518 of the main body 510 reaches a position near the lower end of the upper shield shell 200 in the vertical direction, the press-in portion 518 presses the area near the lower end of the upper shield shell 200 radially outward.

[0113] (Second Implementation)

[0114] Reference Figure 7 and Figure 31 The current sensor (not shown) of the second embodiment of the present invention includes: an upper shielding shell 200, a lower shielding shell 300, a press-in member 500A, an inner member 600A, a substrate 700, a shell 750, a housing 800, and a busbar 820. Here, the upper shielding shell 200, the lower shielding shell 300, and the press-in member 500A constitute a shielding shell composite 580A. Here, the current sensor of this embodiment has the same characteristics as the current sensor 100 of the first embodiment described above (see...). Figure 1 and Figure 7 The same structure. Therefore, in Figures 24 to 33 In the structural elements shown, the same reference numerals are used to label the structural elements that are the same as in the first embodiment. Furthermore, the orientation and direction in this embodiment will be described using the same terms as in the first embodiment.

[0115] Reference Figure 31In this embodiment, the upper shielding shell 200 is made of metal. The upper shielding shell 200 has: an upper surface 210 with an opening 212 on its inner side; an upper outer peripheral portion 220 extending downward from the outer edge of the upper surface 210 in a vertical direction; an upper inner peripheral portion (inner peripheral portion) 230; and an upper connecting portion 240. However, the invention is not limited to this; the upper shielding shell 200 may also omit the upper inner peripheral portion 230. That is, the upper shielding shell 200 may at least have an upper surface 210 and an upper outer peripheral portion 220, the upper surface 210 having an opening 212 on its inner side, and the upper outer peripheral portion 220 extending downward from the outer edge of the upper surface 210 in a vertical direction. Figure 25 As shown, when viewed in the vertical direction, the upper shielding shell 200 has an annular shape. However, the invention is not limited to this, and the shape of the upper shielding shell 200 is not particularly limited. Furthermore, the upper shielding shell 200 can be made of soft magnetic materials such as permalloy, silicon steel, or pure iron.

[0116] Reference Figure 25 In this embodiment, the upper surface 210 is orthogonal to the vertical direction. The upper surface 210 has an annular shape with an axis parallel to the vertical direction. However, the invention is not limited thereto, and the shape of the upper surface 210 is not particularly limited.

[0117] Reference Figure 25 In this embodiment, the opening 212 is circular with an axis parallel to the vertical direction. However, the invention is not limited to this, and the shape of the opening 212 is not particularly limited. The upper surface 210 and the opening 212 are located on the same axis. The opening 212 is located radially inward of the axis relative to the upper surface 210.

[0118] Reference Figure 31 In this embodiment, the upper outer peripheral portion 220 extends downward in the upward and downward direction from the radial outer edge of the upper surface 210.

[0119] Reference Figure 31 In this embodiment, the upper inner peripheral portion 230 extends downward in the vertical direction from the radial inner edge of the upper surface 210. The upper inner peripheral portion 230 is located radially outside the opening 212. The inner peripheral portion 230 extends vertically from the opening 212.

[0120] Reference Figure 31 In this embodiment, the upper connecting portion 240 is an opening that penetrates the upper outer peripheral portion 220 in a radial direction orthogonal to the vertical direction. The upper outer peripheral portion 220 is interrupted by the upper connecting portion 240 in the circumferential direction of the axis of the upper surface 210. That is, the circumferential continuity of the upper surface 210 of the upper outer peripheral portion 220 is interrupted by the upper connecting portion 240.

[0121] Reference Figure 31In this embodiment, the lower shielding shell 300 is made of metal. The lower shielding shell 300 has: a lower surface 310 with an opening 312 on its inner side; a lower outer peripheral portion 320 extending upward from the outer edge of the lower surface 310 in a vertical direction; a lower inner peripheral portion (inner peripheral portion) 330; and a lower connecting portion 340. However, the invention is not limited to this; the lower shielding shell 300 may also omit the lower inner peripheral portion 330. That is, the lower shielding shell 300 may have at least a lower surface 310 and a lower outer peripheral portion 320, the lower surface 310 having an opening 312 on its inner side, and the lower outer peripheral portion 320 extending upward from the outer edge of the lower surface 310 in a vertical direction. When viewed in the vertical direction, the lower shielding shell 300 has an annular shape. Furthermore, the invention is not limited to this; the shape of the lower shielding shell 300 is not particularly limited. In addition, the lower shielding shell 300 can be made of soft magnetic materials such as permalloy, silicon steel, and pure iron.

[0122] Reference Figure 31 In this embodiment, the lower surface 310 is orthogonal to the vertical direction. The lower surface 310 has an annular shape with an axis parallel to the vertical direction. However, the invention is not limited thereto, and the shape of the lower surface 310 is not particularly limited.

[0123] Reference Figure 31 In this embodiment, the opening 312 is circular with an axis parallel to the vertical direction. However, the invention is not limited to this, and the shape of the opening 312 is not particularly limited. The lower surface 310 and the opening 312 are located on the same axis. The opening 312 is located radially inward of the axis relative to the lower surface 310.

[0124] Reference Figure 31 In this embodiment, the lower outer peripheral portion 320 extends upward in the upward and downward direction from the radial outer edge of the lower surface 310.

[0125] Reference Figure 31 In this embodiment, the lower inner peripheral portion 330 extends upward in the vertical direction from the radial inner edge of the lower surface 310. The lower inner peripheral portion 330 is located radially outside the opening 312. The inner peripheral portion 330 extends vertically from the opening 312.

[0126] Reference Figure 31 In this embodiment, the lower connecting portion 340 is an opening that radially penetrates the lower outer peripheral portion 320. The lower outer peripheral portion 320 is interrupted in the circumferential direction of the lower surface 310 along its axis by the lower connecting portion 340. That is, the circumferential continuity of the lower surface 310 of the lower outer peripheral portion 320 is interrupted by the lower connecting portion 340.

[0127] As described above, the upper shielding shell 200 has an inner peripheral portion 230 extending vertically from the opening 212, and the lower shielding shell 300 has an inner peripheral portion 330 extending vertically from the opening 312; however, the present invention is not limited thereto. That is, at least one of the upper shielding shell 200 and the lower shielding shell 300 may have inner peripheral portions 230 and 330 extending vertically from the openings 212 and 312 of the upper shielding shell 200 and the lower shielding shell 300, respectively.

[0128] like Figure 29 As shown, the upper shielding shell 200 and the lower shielding shell 300 constitute the receiving part 400. The receiving part 400 is an annular space with an axis parallel to the vertical direction.

[0129] Reference Figure 30 In this embodiment, the press-in member 500A is made of resin. The press-in member 500A is pressed into the upper shielding shell 200. Furthermore, as... Figure 29 As shown, the press-in member 500A is pressed into the lower shielding shell 300. The press-in member 500A has a main body portion 510A.

[0130] like Figure 32 As shown, the main body 510A of this embodiment has a cylindrical shape extending in the vertical direction. The main body 510A is elastic and can bend radially inward, orthogonal to the vertical direction. That is, because the main body 510A is elastic, it can return to its original state even when bent radially inward. In other words, the main body 510A has a restoring force relative to radial external forces.

[0131] like Figure 29 and Figure 30 As shown, the main body 510A presses the upper outer periphery 220 and the lower outer periphery 320 outward in a horizontal plane orthogonal to the vertical direction to integrally fix the upper shielding shell 200 and the lower shielding shell 300. That is, the main body 510A integrally fixes the upper shielding shell 200 and the lower shielding shell 300 using the aforementioned restoring force. The upper shielding shell 200 and the lower shielding shell 300 are integrally fixed by the pressing member 500A. Therefore, the current sensor of this embodiment does not require the filling of polyurethane resin or the like. In the current sensor of this embodiment, when the upper shielding shell 200 and the lower shielding shell 300 are integrally fixed by the pressing member 500A, a gap is formed on the entire circumference between the upper inner periphery 230 of the upper shielding shell 200 and the lower inner periphery 330 of the lower shielding shell 300 to prevent the formation of a short-circuit ring. Alternatively, instead of forming a gap between the upper inner periphery 230 and the lower inner periphery 330, a gap can be formed between the upper outer periphery 220 of the upper shielding shell 200 and the lower outer periphery 320 of the lower shielding shell 300.

[0132] like Figure 32 and Figure 33 As shown, unlike the main body portion 510 of the first embodiment, no slit is formed on the main body portion 510A of this embodiment. However, the present invention is not limited to this. That is, a slit may also be formed on the main body portion 510A.

[0133] like Figure 29 and Figure 30 As shown, the main body 510A has an upper guide portion 515A, a lower guide portion 517A, and a pressing portion 518A.

[0134] like Figure 28 As shown, in this embodiment, the upper guide portion 515A is located above the press-in portion 518A in the vertical direction. The upper end 5152A of the upper guide portion 515A has a dimension S1 in the horizontal plane that is smaller than the inner surface of the upper outer periphery 220 of the upper shielding shell 200. That is, in the horizontal plane, the dimension S1 of the upper end 5152A of the upper guide portion 515A is smaller than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200.

[0135] like Figure 28 As shown, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152A of the upper guide portion 515A has a dimension S1 in the horizontal plane that is smaller than the inner surface of the upper outer periphery 220 of the upper shielding shell 200. That is, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S1 of the upper end 5152A of the upper guide portion 515A is smaller than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200. When the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152A of the upper guide portion 515A does not contact the inner surface of the upper outer periphery 220 in the radial direction. Furthermore, the present invention is not limited thereto. When the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152A of the upper guide portion 515A can also contact the inner surface of the upper outer periphery 220 in the radial direction. That is, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper end 5152A of the upper guide portion 515A can also have the same dimension S1 in the horizontal plane as the inner surface of the upper outer periphery 220 of the upper shielding shell 200. In other words, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S1 of the upper end 5152A of the upper guide portion 515A can also be the same as the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200.

[0136] like Figure 28As shown, in this embodiment, the lower guide portion 517A is located below the press-in portion 518A in the vertical direction. The lower end 5172A of the lower guide portion 517A has a dimension S2 in the horizontal plane that is smaller than the inner surface of the lower outer periphery 320 of the lower shielding shell 300. That is, in the horizontal plane, the dimension S2 of the lower end 5172A of the lower guide portion 517A is smaller than the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300.

[0137] like Figure 28 As shown, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172A of the lower guide portion 517A has a dimension S2 in the horizontal plane that is smaller than the inner surface of the lower outer periphery 320 of the lower shielding shell 300. That is, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S2 of the lower end 5172A of the lower guide portion 517A is smaller than the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300. When the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172A of the lower guide portion 517A does not contact the inner surface of the lower outer periphery 320 in the radial direction. Furthermore, the present invention is not limited thereto. With the press-in member 500 pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172A of the lower guide portion 517A can also contact the inner surface of the lower outer periphery 320 in the radial direction. That is, with the press-in member 500A pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower end 5172A of the lower guide portion 517A can also have the same dimension S2 in the horizontal plane as the inner surface of the lower outer periphery 320 of the lower shielding shell 300. In other words, with the press-in member 500A pressed into the upper shielding shell 200 and the lower shielding shell 300, in the horizontal plane, the dimension S2 of the lower end 5172A of the lower guide portion 517A can also be the same as the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300.

[0138] like Figure 28 As shown, in this embodiment, the pressing portion 518A is located between the upper guide portion 515A and the lower guide portion 517A in the vertical direction. The pressing portion 518A is pressed into the inner side of the upper outer peripheral portion 220. The pressing portion 518A is pressed into the inner side of the lower outer peripheral portion 320. The pressing portion 518A contacts the inner surface of the upper outer peripheral portion 220 in the radial direction. The pressing portion 518A contacts the inner surface of the lower outer peripheral portion 320 in the radial direction.

[0139] like Figure 28As shown, the press-in portion 518A has a dimension SP larger than the upper end 5152A of the upper guide portion 515A in the horizontal plane. That is, in the horizontal plane, the dimension SP of the press-in portion 518A is larger than the dimension S1 of the upper end 5152A of the upper guide portion 515A. Furthermore, the press-in portion 518A has a dimension SP larger than the lower end 5172A of the lower guide portion 517A in the horizontal plane. That is, in the horizontal plane, the dimension SP of the press-in portion 518A is larger than the dimension S2 of the lower end 5172A of the lower guide portion 517A.

[0140] Reference Figure 28 and Figure 31 When the press-in member 500A is not pressed into the upper shielding shell 200 and the lower shielding shell 300, the press-in portion 518A has a dimension in the horizontal plane that is larger than the dimension SU of the inner surface of the upper outer periphery 220 of the upper shielding shell 200 and the dimension SL of the inner surface of the lower outer periphery 320 of the lower shielding shell 300. Therefore, pressing the press-in member 500A into the upper shielding shell 200 and the lower shielding shell 300 becomes easier.

[0141] like Figure 32 and Figure 33 As shown, the pressing part 518A of this embodiment has a plurality of upper protrusions 5182 and a plurality of lower protrusions 5184.

[0142] like Figure 33 As shown, in this embodiment, the upper protrusions 5182 protrude radially outward. The upper protrusions 5182 define the radially outer ends of the main body portion 510A. The upper protrusions 5182 are located above each of the lower protrusions 5184 in the vertical direction. Figure 30 As shown, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper protrusion 5182 contacts the upper outer periphery 220 of the upper shielding shell 200 in the radial direction. More specifically, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper protrusion 5182 contacts the upper outer periphery 220 of the upper shielding shell 200 from the inside in the radial direction. When the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper protrusion 5182 contacts only the upper outer periphery 220 of the upper shielding shell 200 in the radial direction. That is, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the upper protrusion 5182 does not contact the lower outer periphery 320 of the lower shielding shell 300 in the radial direction.

[0143] like Figure 33As shown, in this embodiment, the lower protrusions 5184 protrude radially outward. The lower protrusions 5184 define the radially outer ends of the main body portion 510A. The lower protrusions 5184 are located below each of the upper protrusions 5182 in the vertical direction. Figure 29 As shown, with the press-in member 500A pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower protrusion 5184 contacts the lower outer periphery 320 of the lower shielding shell 300 in the radial direction. More specifically, with the press-in member 500A pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower protrusion 5184 contacts the lower outer periphery 320 of the lower shielding shell 300 from the inside in the radial direction. With the press-in member 500A pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower protrusion 5184 contacts only the lower outer periphery 320 of the lower shielding shell 300 in the radial direction. That is, when the press-in member 500A is pressed into the upper shielding shell 200 and the lower shielding shell 300, the lower protrusion 5184 does not contact the upper outer periphery 220 of the upper shielding shell 200 in the radial direction.

[0144] As described above, the press-in portion 518A of this embodiment has a plurality of upper protrusions 5182 and a plurality of lower protrusions 5184. With this structure, the press-in member 500A of this embodiment has increased strength compared to the press-in member 500 of the first embodiment, which has upper and lower slits 512 and 514. Furthermore, with this structure, the press-in member 500A of this embodiment can exert a greater force on the upper outer periphery 220 of the upper shielding shell 200 and the lower outer periphery 320 of the lower shielding shell 300 compared to the press-in member 500 of the first embodiment. Moreover, since the press-in member 500A of this embodiment is easier to mold than the press-in member 500 of the first embodiment, which has upper and lower slits 512 and 514, it is also advantageous in terms of component cost.

[0145] like Figure 32 As shown, an extension section 519A is provided in the main body 510A.

[0146] like Figure 32 As shown, in this embodiment, the lead-out portion 519A is a hole that penetrates the main body portion 510A in a radial direction orthogonal to the vertical direction. Furthermore, the lead-out portion 519A is also a groove extending upwards from the lower end of the main body portion 510A. The lead-out portion 519A is a hole that penetrates the lower guide portion 517A in a radial direction. The lead-out portion 519A is a hole that penetrates the main body portion 510A in a front-rear direction orthogonal to the vertical direction. That is, the lead-out portion 519A is a hole that penetrates the lower guide portion 517A in the front-rear direction.

[0147] like Figure 32 As shown, the press-in member 500A also includes a terminal base portion 520 and a connecting portion 530A. Here, the terminal base portion 520 of this embodiment has the same structure as the terminal base portion 520 of the first embodiment. Therefore, detailed description is omitted.

[0148] like Figure 32 As shown, in this embodiment, the connecting portion 530A connects the main body portion 510A and the terminal block portion 520. The connecting portion 530A connects the main body portion 510A and the terminal block portion 520 in the front-rear direction. Figure 32 and Figure 33 As shown, the connecting part 530A has two reinforcing parts 532A and a positioning part 534A.

[0149] like Figure 32 As shown, in this embodiment, the reinforcing portion 532A is located on both sides of the lead-out portion 519A in the left-right direction, which is orthogonal to the vertical and horizontal directions and the front-back direction, respectively. The reinforcing portion 532A has a first wall portion 5322A and a second wall portion 5324A.

[0150] like Figure 32 As shown, in this embodiment, the first wall portion 5322A extends outward from the lead-out portion 519A in a horizontal plane. More specifically, the first wall portion 5322A extends forward from the lead-out portion 519A in a front-rear direction. The first wall portion 5322A has a flat plate shape extending in the vertical direction. The first wall portion 5322A is orthogonal to the left-right direction. (Refer to...) Figure 31 and Figure 32 The first wall portion 5322A of the two reinforcing portions 532A is located on the circumferential inner side of the lower connecting portion 340 of the lower shield shell 300.

[0151] like Figure 32As shown, the second wall portion 5324A of one reinforcing portion 532A extends from the first wall portion 5322A away from the other reinforcing portion 532A. Furthermore, the second wall portion 5324A of the other reinforcing portion 532A also extends from the first wall portion 532A away from the aforementioned reinforcing portion 532A. That is, the second wall portion 5324A of the right-hand reinforcing portion 532A extends from the first wall portion 5322A away from the left-hand reinforcing portion 532A, and the second wall portion 5324A of the left-hand reinforcing portion 532A extends from the first wall portion 5322A away from the right-hand reinforcing portion 532A. More specifically, the second wall portion 5324A of the right-hand reinforcing portion 532A extends to the right from the first wall portion 5322A, and the second wall portion 5324A of the left-hand reinforcing portion 532A extends to the left from the first wall portion 5322A. The second wall portion 5324A has a flat plate shape extending in the vertical direction. The second wall portion 5324A is orthogonal to the front-rear direction. That is, the extension direction of the second wall portion 5324A is orthogonal to the extension direction of the first wall portion 5322A. This helps to suppress bending and deformation of the connecting portion 530A. (Refer to...) Figure 31 and Figure 32 The second wall portion 5324A is located circumferentially outside the lower connecting portion 340 of the lower shielding shell 300. The second wall portion 5324A is also located radially outside the lower shielding shell 300. More specifically, the second wall portion 5324A is located radially outside the lower connecting portion 340 of the lower shielding shell 300. The second wall portion 5324A is located laterally outside the lower connecting portion 340 of the lower shielding shell 300. The corners of the circumferential inner surfaces of the connecting portion between the first wall portion 5322A and the second wall portion 5324A are rounded.

[0152] from Figure 32 and Figure 33 It can be understood that the positioning part 534A in this embodiment is located above the reinforcing part 532A in the vertical direction. For example... Figure 27 As shown, the positioning part 534A is located circumferentially inside the upper connecting part 240 of the upper shielding shell 200. (Refer to...) Figure 33 The upper portion of the positioning part 534A extends radially inward beyond the radial outer surface of the main body part 510A. As a result, bending of the positioning part 534A is suppressed.

[0153] like Figure 26 As shown, in this embodiment, the inner member 600A is disposed within the receiving portion 400 between the main body portion 510A and the inner peripheral portions 230 and 330. The inner member 600A is disposed within the receiving portion 400 between the main body portion 510A and the upper inner peripheral portion 230. The inner member 600A is disposed within the receiving portion 400 between the main body portion 510A and the lower inner peripheral portion 330. (Refer to...) Figure 26When viewed in the vertical direction, the inner member 600A has a circular shape. However, the invention is not limited thereto, and the shape of the inner member 600A is not particularly limited. Figure 26 As shown, in the current sensor of this embodiment, the inner member 600A is configured not to contact the pressing member 500A. However, the present invention is not limited to this, and the inner member 600A may also contact the pressing member 500A. The inner member 600A includes a coil 610, a magnetic core 620, a core shell 630, and a buffer material 640A. The coil 610, magnetic core 620, and core shell 630 of this embodiment have the same structure as those of the coil 610, magnetic core 620, and core shell 630 of the first embodiment described above. Therefore, detailed description is omitted.

[0154] Reference Figure 26 In this embodiment, the buffer material 640A is made of silicon. The buffer material 640A is located vertically between the lower core shell 634 and the magnetic core 620. That is, the magnetic core 620 is indirectly in contact with the lower core shell 634 through the buffer material 640A. Additionally, the magnetic core 620 is in contact with the upper core shell 632. This prevents the magnetic core 620 from wobbling within the core shell 630.

[0155] like Figure 26 As shown, the current sensor of this embodiment also has an adhesive member 642A.

[0156] Reference Figure 26 In this embodiment, the adhesive member 642A is located below the inner member 600A within the receiving portion 400. The adhesive member 642A is positioned vertically between the lower shielding shell 300 and the inner member 600A. The adhesive member 642A bonds the inner member 600A and the lower shielding shell 300. This prevents the inner member 600A from shaking within the receiving portion 400. Furthermore, a gap is formed between the upper shielding shell 200 and the inner member 600A.

[0157] Reference Figure 26 The upper shielding shell 200, the lower shielding shell 300, the press-in component 500A, the inner component 600A, and the adhesive component 642A constitute the core component 645A.

[0158] The above examples illustrate the specific implementation of the present invention, but the present invention is not limited thereto and can be modified and altered in various ways.

[0159] In the first embodiment, an upper slit 512 and a lower slit 514 extending in the vertical direction are provided in the main body portion 510 of the press-in member 500, but the present invention is not limited thereto. That is, instead of the upper slit 512 and the lower slit 514, a diamond-shaped hole penetrating the main body portion 510 in the radial direction can be provided, or a slit that cuts off the main body portion 510 in the circumferential direction and extends in the vertical direction can be provided.

[0160] In the first embodiment, the main body 510 is provided with an extension portion 519, but the present invention is not limited thereto, and the extension portion 519 may not be provided.

[0161] The inner member 600 of the first embodiment has a core shell 630 wound with a coil 610, which houses the magnetic core 620. However, the present invention is not limited to this, and the core shell 630 may not be present. That is, the coil 610 may also be directly wound on the magnetic core 620.

[0162] The inner member 600 in the first embodiment has a core sponge 640, but the present invention is not limited thereto. That is, the inner member 600 may also have a cushioning material such as lubricating grease instead of the core sponge 640.

[0163] The core component 645 of the first embodiment includes a sponge 642, but the present invention is not limited thereto, and the core component 645 may also not include a sponge 642. In this case, the inner member 600 is bonded and fixed to the lower shielding shell 300, forming a structure with gaps instead of the sponge 642. Particularly when it is assumed that the upper shielding shell 200 is pushed upwards due to the rebound force of the sponge 642, it is preferable to bond and fix the inner member 600 to the lower shielding shell 300, thus forming a structure with gaps between the inner member 600 and the upper shielding shell 200.

[0164] In the second embodiment, the main body 510A is provided with an outlet 519A, but the present invention is not limited thereto, and the outlet 519A may not be provided.

[0165] The inner member 600A in the second embodiment has a core shell 630 wound with a coil 610, which houses the magnetic core 620. However, the present invention is not limited to this, and the core shell 630 may not be present. That is, the coil 610 may also be directly wound on the magnetic core 620.

[0166] In the inner member 600A of the second embodiment, the buffer material 640A is located between the lower core shell 634 and the magnetic core 620 in the vertical direction, but the present invention is not limited thereto. That is, the buffer material 640A may also be located between the upper core shell 632 and the magnetic core 620 in the vertical direction. In addition, two buffer materials 640A may be disposed between the upper core shell 632 and the magnetic core 620 and between the lower core shell 634 and the magnetic core 620.

[0167] In the core component 645A of the second embodiment, the adhesive member 642A is located below the inner member 600A within the receiving portion 400, but the present invention is not limited thereto. That is, the adhesive member 642A may also be located above the inner member 600A within the receiving portion 400. That is, the adhesive member 642A may also be located between the upper shielding shell 200 and the inner member 600A in the vertical direction. In this case, the adhesive member 642A may also bond the inner member 600A and the upper shielding shell 200. Furthermore, in this case, a gap may exist between the inner member 600A and the lower shielding shell 300.

[0168] In addition, in this invention, "pouring" refers to filling the receiving space inside the outer shell 750 or the housing 800 with a potting resin such as polyurethane to position and fix the upper shielding shell 200, the lower shielding shell 300, and the inner components 600 and 600A, rather than referring to bonding and fixing the upper shielding shell 200 to the inner components 600 and 600A, or the lower shielding shell 300 to the inner components 600 and 600A, or simply bonding the opposing surfaces of the components inside the core components 645 and 645A and their surroundings.

[0169] This invention is based on Japanese Patent Application No. 2020-178746, filed with the Japan Patent Office on October 26, 2020, the contents of which are incorporated herein by reference.

[0170] Although the preferred embodiments of the present invention have been described, it will be apparent to those skilled in the art that modifications can be made to the embodiments without departing from the spirit of the invention, and such modifications are within the scope of the invention.

[0171] Explanation of reference numerals in the attached figures

[0172] 100: Current sensor

[0173] 200: Upper shielding shell

[0174] 210: Upper surface

[0175] 212: Opening

[0176] 220: Upper peripheral part

[0177] 230: Upper inner peripheral part (inner peripheral part)

[0178] 240: Upper connecting part

[0179] 300: Lower shielding shell

[0180] 310: Lower surface

[0181] 312: Opening

[0182] 320: Lower outer periphery

[0183] 330: Lower inner circumference (inner circumference)

[0184] 340: Lower connecting part

[0185] 400: Containment Department

[0186] 500, 500A: Press-in components

[0187] 510, 510A: Main body

[0188] 512: Upper slit

[0189] 514: Lower side slit

[0190] 515, 515A: Upper guide section

[0191] 5152, 5152A: Upper end

[0192] 517, 517A: Lower guide section

[0193] 5172, 5172A: Lower end

[0194] 518, 518A: Press-in section

[0195] 5182: Upper protrusion

[0196] 5184: Lower protrusion

[0197] 519, 519A: Lead-out section

[0198] 520: Terminal seat part

[0199] 522: Terminal

[0200] 530, 530A: Connecting parts

[0201] 532, 532A: Reinforced Section

[0202] 5322, 5322A: First wall section

[0203] 5324, 5324A: Second wall section

[0204] 534, 534A: Positioning Unit

[0205] 580, 580A: Shielding shell composite

[0206] 600, 600A: Inner components

[0207] 610: Coil

[0208] 612: End

[0209] 620: Magnetic core (toroidal core)

[0210] 630: Core and Shell

[0211] 632: Upper core shell

[0212] 634: Lower core shell

[0213] 640: Core sponge

[0214] 640A: Cushioning material

[0215] 642: Sponge

[0216] 642A: Adhesive components

[0217] 645, 645A: Core components

[0218] 650: Shell sponge

[0219] 700: Substrate

[0220] 710: Terminal connection part

[0221] 720: Pin Connection Section

[0222] 750: Outer casing

[0223] 752: Sales

[0224] 800: Housing

[0225] 820: Busbar

[0226] S1: Size

[0227] S2: Size

[0228] SL: Size

[0229] SP: Size

[0230] SU: Size

Claims

1. A current sensor, comprising an upper shielding shell, a lower shielding shell, a press-in member, and an inner member, wherein, The upper shielding shell has at least an upper surface and an upper outer periphery. The upper surface has an opening on the inside. The upper outer periphery extends downward from the outer edge of the upper surface in a vertical direction. The lower shielding shell has at least a lower surface and a lower outer periphery. The lower surface has an opening on the inside. The lower outer periphery extends upward from the outer edge of the lower surface in the vertical direction. At least one of the upper shielding shell and the lower shielding shell has an inner peripheral portion extending from the opening of the at least one of the upper shielding shell and the lower shielding shell along the vertical direction. The upper shielding shell and the lower shielding shell constitute a receiving part. The press-in component has a main body. The main body presses the upper outer periphery and the lower outer periphery outward in a horizontal plane orthogonal to the vertical direction to integrally fix the upper shielding shell and the lower shielding shell. The inner components include a coil and a magnetic core. The inner component is disposed within the receiving portion between the main body portion and the inner peripheral portion.

2. The current sensor according to claim 1, wherein, The inner component has a ring-shaped magnetic core that serves as the magnetic core.

3. The current sensor according to claim 2, wherein, The main body has a cylindrical shape extending in the vertical direction. The main body is elastic and can flex inward in a radial direction orthogonal to the vertical direction.

4. The current sensor according to claim 3, wherein, Multiple upper slits and multiple lower slits are formed in the main body.

5. The current sensor according to claim 4, wherein, The main body has an upper end and a lower end in the vertical direction. The upper slit extends downward in the vertical direction from the upper end of the main body. The lower slit extends upward in the vertical direction from the lower end of the main body.

6. The current sensor according to claim 4 or 5, wherein, The upper slit and the lower slit are arranged alternately in the circumferential direction of the main body.

7. The current sensor according to any one of claims 1 to 5, wherein, The main body has an upper guide portion, a lower guide portion, and a pressing portion. The pressing part is located between the upper guide part and the lower guide part in the vertical direction. The upper guide portion has an upper end in the vertical direction. The upper outer periphery has an inner surface. The upper end of the upper guide portion has a smaller dimension in the horizontal plane than the inner surface of the upper outer periphery of the upper shielding shell. The lower guide portion has a lower end in the vertical direction. The lower outer periphery has an inner surface. The lower end of the lower guide portion has a smaller dimension in the horizontal plane than the inner surface of the lower outer periphery of the lower shielding shell. The pressing portion has a larger dimension in the horizontal plane than the upper end of the upper guide portion. The pressing portion has a larger dimension in the horizontal plane than the lower end of the lower guide portion. The pressing part is pressed into the inner side of the upper outer periphery. The pressing part is pressed into the inner side of the lower outer periphery.

8. The current sensor according to any one of claims 1 to 5, wherein, The press-in component also has a terminal base portion and a connecting portion. The terminal base portion is located on the outer side of both the upper and lower shielding shells in the horizontal plane. The connecting part connects the main body part and the terminal block part.

9. The current sensor according to claim 8, wherein, The connecting part has two reinforcing parts. An outlet portion is provided in the main body. The lead-out portion is a hole that penetrates the main body in a radial direction orthogonal to the vertical direction. The coil has ends, The end of the coil is led out to the outside through the lead-out portion. The reinforcing portion has a first wall portion and a second wall portion, respectively. The first wall portion extends outward from the lead-out portion within the horizontal plane. The second wall portion of one of the reinforcing portions extends from the first wall portion in a manner that is away from the other of the reinforcing portions. The second wall portion of the other reinforcement extends from the first wall portion away from the first reinforcement portion.

10. The current sensor according to any one of claims 1 to 5, wherein, The current sensor also has a sponge. The sponge is disposed within the receiving portion on at least one of the upper and lower sides of the inner member.

Images