Electrical component

Abstract

This electrical component is provided with a case for accommodating an electronic device therein and comprises a protector disposed in a manner overlapping the outer surface of the case. The case includes a flat general case part and a high-rigidity case part having a rigidity higher than that of the general case part. The protector includes: a flat general protector part disposed along the outer surface; a low-rigidity protector part having a rigidity lower than that of the general protector part; and a high-rigidity protector part having a rigidity higher than that of the general protector part. The low-rigidity protector part has a fastening portion for fastening the protector to a fastening point of the case. Due to the fastening at the fastening point, the protector is attached to the case such that a portion of the high-rigidity protector part faces the high-rigidity case part.

Description

Electrical Components

[0001] The present invention relates to an electrical component.

[0002] JP2013-193634A discloses an electric vehicle. The electric vehicle includes a metal case that houses a power conversion device. The case is fixed to a fixed structure of the vehicle by front and rear brackets.

[0003] Such cases are often made of aluminum housings, and protectors with higher rigidity than the aluminum housings are sometimes attached to the aluminum housings. Because the protector is more rigid than the aluminum housing, if a large load is applied to the protector, there is a risk that the fastening parts that fasten the protector will break. In such cases, the protector may not be able to provide adequate protection.

[0004] The present invention has been made in consideration of such problems, and aims to provide an electrical component that can prevent damage to the fastening portion even when a large load is applied.

[0005] According to one aspect of the present invention, an electrical component is a component including a case for accommodating an electronic device, and includes a protector disposed over an outer surface of the case. The case has a flat general case portion and a high-rigidity case portion having higher rigidity than the general case portion. The protector has a flat general protector portion disposed along the outer surface, a low-rigidity protector portion having lower rigidity than the general protector portion, and a high-rigidity protector portion having higher rigidity than the general protector portion. The low-rigidity protector portion has fastening portions that fasten the protector to fastening points of the case, and the protector is attached to the case by fastening the fastening portions so that a portion of the high-rigidity protector portion faces the high-rigidity case portion.

[0006] FIG. 1 is a perspective view showing a drive unit equipped with an electrical component according to this embodiment. FIG. 2 is a perspective view showing a side of the electrical component. FIG. 3 is a perspective view showing a part of the case of the electrical component. FIG. 4 is an exploded perspective view showing a protector attached to the electrical component. FIG. 5 is a perspective view showing the protector as seen from the back side. FIG. 6 is a view showing the portion of the drive unit provided with the protector as seen from the front of the vehicle. FIG. 7 is a view showing the portion of the drive unit provided with the protector as seen from the side of the vehicle. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 6.

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0008] Fig. 1 is a perspective view showing a drive unit 12 equipped with an electrical component 10 according to this embodiment. Fig. 2 is a perspective view showing a side portion of the electrical component 10. Fig. 3 is a perspective view showing a portion of a case 30 of the electrical component 10. The vehicle front FR, vehicle rear RR, vehicle left L, and vehicle right R shown in the drawings indicate directions when the electrical component is installed in a vehicle.

[0009] As shown in Fig. 1, a drive unit 12 equipped with an electrical component 10 according to this embodiment is mounted on, for example, an electric vehicle. When mounted on the vehicle, the drive unit 12 is arranged with side members constituting the vehicle body to its sides. Specifically, a left side member 14 (see Fig. 6) is arranged on the left side L of the drive unit 12.

[0010] The drive unit 12 uses a motor as a power source to drive drive wheels (not shown). The drive unit 12 includes a motor housing 20 that houses the motor, and a gear housing 22 that is provided at an end of the motor housing 20 and houses a reduction gear connected to the rotating shaft of the motor. The electrical component 10 is provided above the motor housing 20.

[0011] (Electrical Component) As shown in FIGS. 1 and 2 , the electrical component 10 includes electronic devices (not shown), such as a high-voltage circuit and an inverter that supply power to a motor, a case 30 that houses the electronic devices, and a protector 36 that is disposed on an outer surface 32 of the case 30.

[0012] (Case) The case 30 is an aluminum casting made of aluminum. The case 30 has a substantially flat top surface 40, a front side surface 42 that extends from the edge of the top surface 40 on the front (FR) side of the vehicle toward the motor housing section 20, and a rear side surface 44 that extends from the edge of the top surface 40 on the rear (RR) side of the vehicle toward the motor housing section 20. The case 30 also has a right side surface 46 that extends from the edge of the top surface 40 on the right (R) side of the vehicle toward the motor housing section 20, and a left side surface 48 that extends from the edge of the top surface 40 on the left (L) side of the vehicle toward the motor housing section 20. The top surface 40, the front side surface 42, the rear side surface 44, the right side surface 46, and the left side surface 48 form a cover-like member that can house an electronic device.

[0013] As shown in FIG. 3 , the left side surface 48 of the case 30 has a flat general case portion 50 and a high-rigidity case portion 52 that is higher in rigidity than the general case portion 50 .

[0014] The case high-rigidity portion 52 is configured by a rib 56 that protrudes outward from the outer surface 32 of the left side surface 48, or a flange 58 that protrudes outward from the end of the case general portion 50. The electrical component 10 of this embodiment includes both the rib 56 and the flange 58.

[0015] (Flange) The flange 58 is formed by a portion that extends outward from the end of each of the side surfaces 42, 44, 46, and 48 (see FIG. 1 ) of the case 30 on the motor accommodating portion 20 side. The flange 58 is formed on each of the side surfaces 42, 44, and 46, including the left side surface 48, and is formed to surround the case 30.

[0016] As shown in FIG. 2, the flange 58 of the case 30 is abutted against a housing flange 62 formed on a casing 60 of the motor housing 20 and is fixed to the housing flange 62 with bolts 64 (see FIGS. 2, 7, and 8).

[0017] 3, the amount of protrusion of the flange 58 from the general case portion 50 varies depending on the location where it is formed. For example, the portion of the flange 58 formed on the left side surface 48 protrudes more than the portion near the corner between the left side surface 48 and the front side surface 42.

[0018] (Rib) The rib 56 is composed of a thick portion formed on the left side surface 48. The rib 56 is composed of a horizontal rib 56A extending in the front-to-rear direction of the vehicle and a vertical rib 56B extending in the up-down direction. The horizontal rib 56A and the vertical rib 56B intersect with each other. As a result, the left side surface 48 is provided with a grid-shaped portion 70 (see FIGS. 3 and 8) formed in a grid pattern by the horizontal ribs 56A and the vertical ribs 56B. The grid-shaped portion 70 is also located on the left side surface 48 on the front (FR) side of the vehicle.

[0019] The lower ends of the vertical ribs 56B reach the flange 58 and extend outward along the flange 58. Therefore, the amount by which the vertical ribs 56B protrude from the general case portion 50 varies depending on the location where they are formed. For example, the lower end portions of the vertical ribs 56B that are formed to reach the flange 58 protrude more than the horizontal ribs 56A.

[0020] The lower ends of the vertical ribs 56B extending outward along the flange 58 do not reach the edges of the flange 58. As a result, in the direction in which the protector 36 is placed on the case 30, the maximum amount of protrusion of the flanges 58 from the general case portion 50 is greater than the maximum amount of protrusion of the ribs 56 from the general case portion 50.

[0021] (Protector) As shown in FIG. 2 , the protector 36 has a flat protector general portion 80 arranged along the outer surface 32 on the left side surface 48 of the case 30, a protector low-rigidity portion 82 having lower rigidity than the protector general portion 80, and a protector high-rigidity portion 84 having higher rigidity than the protector general portion 80.

[0022] The protector low-rigidity portion 82 has a fastening portion 98 that fastens the protector 36 to a fastening point 96 of the case 30. By fastening the fastening portion 98, the protector 36 is attached to the case 30 so that a part of the protector high-rigidity portion 84 faces the case high-rigidity portion 52 (see FIG. 8 ).

[0023] The protector low rigidity portion 82 has an arm-like shape extending from the protector general portion 80. The protector high rigidity portion 84 has a shape bulging out from the protector general portion 80 toward the outer surface 32.

[0024] The configuration of the protector 36 will be described with reference to FIGS.

[0025] Fig. 4 is an exploded perspective view showing the protector 36 attached to the electrical component 10. Fig. 5 is a perspective view showing the protector 36 as viewed from the back side. Fig. 6 is a view showing the portion of the drive unit 12 in which the protector 36 is provided as viewed from the front (FR) of the vehicle. Fig. 7 is a view showing the portion of the drive unit 12 in which the protector 36 is provided as viewed from the side of the vehicle. Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 6.

[0026] As shown in FIG. 4, the protector 36 has a plate-shaped inner member 90 and an outer member 92 that are arranged one on top of the other.

[0027] 4 and 5, the inner member 90 disposed on the case 30 side has an inward bulging portion 100 bulging toward the case 30 side, and the outer member 92 placed on the outside of the inner member 90 has an outward bulging portion 102 bulging in a direction away from the case 30. The inward bulging portion 100 of the inner member 90 and the outward bulging portion 102 of the outer member 92 constitute the protector high rigidity portion 84 (see FIG. 7).

[0028] (Inner Member) More specifically, the inner member 90 is formed of an iron plate material and is formed in a substantially pentagonal shape.

[0029] The edges of the inner member 90 include an upper edge 110, a front upper edge 112 that extends downward from the end of the upper edge 110 on the front side of the vehicle FR toward the front side of the vehicle FR, and a front lower edge 114 that extends downward from the lower end of the front upper edge 112 toward the rear side of the vehicle RR. The edges of the inner member 90 include a rear lower edge 116 that extends upward from the lower end of the front lower edge 114 toward the rear side of the vehicle RR, and a rear upper edge 118 that connects the upper end of the rear lower edge 116 and the end of the upper edge 110 on the rear side of the vehicle RR.

[0030] The inner member 90 has an upper edge 110 arranged along the top surface 40 (see FIG. 2 ) of the case 30. Extension pieces 121 extending toward the case 30, which is the right R side of the vehicle, are formed at the corners of the front upper edge 112 and the front lower edge 114. The extension pieces 121 cover the corners of the case 30 when the protector 36 is attached to the case 30.

[0031] A front arm 120 extends from the front upper edge 112 of the inner member 90 toward the case 30. The front arm 120 is formed in an elongated shape with its length greater than its width. The front arm 120 constitutes the protector low-rigidity portion 82 that extends in an arm-like shape from the protector general portion 80.

[0032] 2 and 4, the tip of the forearm 120 is bent along the left side surface 48 of the case 30, and the tip of the forearm 120 constitutes the above-mentioned fastening portion 98 (see FIG. 2). An insertion hole 124 through which the bolt 64 is inserted is formed in the fastening portion 98 of the forearm 120. The fastening portion 98 of the forearm 120 is fixed to the case 30 by threading the bolt 64 inserted into the insertion hole 124 into a screw hole (not shown) provided in the fastening point 96 of the case 30 (see FIG. 2).

[0033] A rear arm 130 extends from the rear upper edge 118 of the inner member 90 toward the case 30. The rear arm 130 is formed in an elongated shape with its length greater than its width. The rear arm 130 constitutes the protector low-rigidity portion 82 that extends in an arm-like shape from the protector general portion 80.

[0034] The tip of the rear arm 130 is bent along the left side surface 48 of the case 30 (see FIG. 2), and the tip of the rear arm 130 constitutes the above-mentioned fastening portion 98. The fastening portion 98 of the rear arm 130 is long in the width direction of the rear arm 130. A pair of insertion holes 132 through which the bolts 64 are inserted are formed in the fastening portion 98 of the rear arm 130. The fastening portion 98 of the rear arm 130 is fixed to the case 30 by threading the bolts 64 inserted through both insertion holes 132 into screw holes (not shown) provided in the fastening points 96 of the case 30 (see FIG. 2).

[0035] The inner member 90 has step portions 140 formed at the corners of the front lower edge 114 and the rear lower edge 116, which protrude toward the vehicle right R side, which is the case 30 side. The step portions 140 have circular holes 142 formed therein, through which positioning bolts 64 are inserted. The step portions 140 are fixed to the motor housing portion 20 by threading the bolts 64 inserted into the circular holes 142 into positioning screw holes (not shown) provided in the motor housing portion 20.

[0036] As a result, the step portion 140 of the inner member 90 is positioned in the motor accommodating portion 20 with the inner member 90 straddling the flange 38 and the accommodating portion flange 62. Therefore, even if the protector low-rigidity portion 82 is deformed, the protector 36 is prevented from being significantly misaligned with respect to the case 30.

[0037] A rectangular first bulge 150 is formed on the upper part of the inner member 90. The first bulge 150 reaches the upper edge 110. The first bulge 150 is a recess that is recessed from the outside to the inside and opens upward.

[0038] A rectangular second bulge 152 is formed in a portion of the inner member 90 on the vehicle rearward (RR) side. The second bulge 152 reaches the rear upper edge 118. The second bulge 152 is a recess that is recessed from the outside to the inside and opens toward the vehicle rearward (RR).

[0039] A triangular third bulge 154 is formed in a portion of the inner member 90 on the vehicle front (FR) side. The third bulge 154 is a recess that is recessed from the outside to the inside and opens in a direction away from the case 30.

[0040] The first bulging portion 150 , the third bulging portion 154 and the second bulging portion 152 constitute an inward bulging portion 100 that bulges toward the case 30 side.

[0041] (Outer Member) The outer member 92 is formed of an iron plate material. The outer member 92 is formed in a trapezoidal shape. The outer member 92 has a smaller area than the inner member 90.

[0042] The edge of the outer member 92 has an upper bottom 160 and front legs 162 that extend downward from the end of the upper bottom 160 on the vehicle front side FR. The edge of the outer member 92 has a lower bottom 164 that extends from the lower end of the front legs 162 toward the vehicle rear side RR, and rear legs 166 that connect the end of the lower bottom 164 on the vehicle rear side RR and the end of the upper bottom 160 on the vehicle rear side RR. The upper bottom 160 of the outer member 92 is arranged along the top surface 40 of the case 30 (see FIG. 2 ).

[0043] The outer member 92 has the aforementioned outward bulging portion 102 formed in the center thereof. The outward bulging portion 102 is formed in a trapezoidal shape, and is positioned so that the upper base of the outward bulging portion 102 faces upward. The outward bulging portion 102 is recessed from the inside to the outside, and bulges in a direction away from the case 30.

[0044] 4 to 6 , with the outer member 92 overlapping the inner member 90, the outer periphery of the outwardly bulging portion 102 is fixed to the inner member 90 by, for example, spot welding. As a result, the outer member 92 and the inner member 90 are integrated to form the protector 36.

[0045] As shown in Figures 7 and 8, the inward bulging portion 100 and the outward bulging portion 102 that constitute the protector 36 are arranged so that they at least partially overlap in the direction in which the inner member 90 and the outer member 92 overlap.

[0046] Specifically, an upper portion of the outward bulging portion 102 of the outer member 92 overlaps with a portion of the first bulging portion 150 of the inner member 90. A lower portion of the outward bulging portion 102 of the outer member 92 on the vehicle front (FR) side overlaps with a portion of the third bulging portion 154 of the inner member 90. A lower portion of the outward bulging portion 102 of the outer member 92 on the vehicle rear (RR) side overlaps with a portion of the second bulging portion 152 of the inner member 90.

[0047] As a result, the inner spaces of the outward bulging portion 102 and the first bulging portion 150, the inner spaces of the outward bulging portion 102 and the third bulging portion 154, and the inner spaces of the outward bulging portion 102 and the second bulging portion 152 are open to the outside. Therefore, even if paint used to paint the protector 36, for example, seeps into each of the inner spaces, the paint is discharged to the outside.

[0048] At least one pair of fastening portions 98 provided on the protector 36 and fastening points 96 on the case 30 side to which the fastening portions 98 are fastened is provided, and a rib 56 is disposed between the fastening points 96 in each pair of combinations. In this embodiment, one set of fastening portions 98 on the protector 36 and fastening points 96 on the case 30 side to which the fastening portions 98 are fastened is provided.

[0049] That is, one of the pair of fastening points 96 provided on the case 30 is located on the vehicle front (FR) side of the lattice-shaped portion 70 formed on the case 30. The other of the pair of fastening points 96 provided on the case 30 is located at a portion on the vehicle rear (RR) side of the lattice-shaped portion 70 formed on the case 30. As a result, the rib 56 that constitutes the lattice-shaped portion 70 is located between the one fastening point 96 and the other fastening point 96.

[0050] When the protector 36 is attached to the case 30, a portion of the outward bulging portion 102 that constitutes the protector high rigidity portion 84 faces the rib 56 (see FIG. 8 ) of the lattice-shaped portion 70 that constitutes the case high rigidity portion 52. Also, a portion of the first bulging portion 150, the second bulging portion 152, and the third bulging portion 154 that constitute the protector high rigidity portion 84 face the rib 56 (see FIG. 8 ) of the lattice-shaped portion 70 that constitutes the case high rigidity portion 52. Furthermore, a portion of the third bulging portion 154 and the second bulging portion 152 that constitute the protector high rigidity portion 84 face the end face of the flange 58 that constitutes the case high rigidity portion 52.

[0051] (Operations and Effects) As described above, the electrical component 10 of this embodiment is a component including a case 30 that houses an electronic device, and includes a protector 36 that is disposed over the outer surface 32 of the case 30. The case 30 has a flat general case portion 50 and a high-rigidity case portion 52 that is more rigid than the general case portion 50. The protector 36 has a flat general protector portion 80 that is disposed along the outer surface 32, a low-rigidity protector portion 82 that is less rigid than the general protector portion 80, and a high-rigidity protector portion 84 that is more rigid than the general protector portion 80. The low-rigidity protector portion 82 has fastening portions 98 that fasten the protector 36 to fastening points 96 of the case 30. By fastening the fastening portions 98, the protector 36 is attached to the case 30 such that a portion of the high-rigidity protector portion 84 faces the high-rigidity case portion 52.

[0052] In this configuration, the protector 36 is placed over the outer surface 32 of the case 30 , and fastening portions 98 provided on the protector low-rigidity portions 82 are fastened to fastening points 96 of the case 30 .

[0053] Therefore, for example, when the left side member 14 on the side of the drive unit 12 bends and abuts against the protector 36, and a large load is applied to the protector 36, the protector low rigidity portion 82 of the protector 36 can deform. As a result, damage to the fastened portion of the protector 36 is suppressed compared to when the protector general portion 80 or the protector high rigidity portion 84 is fastened to the fastening point 96 of the case 30.

[0054] Furthermore, since the protector 36 is attached to the case 30 so that a portion of the protector high rigidity portion 84 faces the case high rigidity portion 52, the load applied to the protector 36 can be borne by the protector high rigidity portion 84 and the case high rigidity portion 52. This allows the protector 36 to enhance the protective function of the electrical component 10 compared to when the protector general portion 80 faces the case general portion 50 of the case 30.

[0055] Furthermore, since the protector 36 is prevented from being damaged at the fastening portion as described above, it is possible to provide an appropriate protective function compared to a case where the fastening portion is damaged and the protector 36 is displaced.

[0056] In the electrical component 10 of this embodiment, electronic devices such as a high-voltage circuit and an inverter are housed within the case 30, and the applied load is supported by the protector 36, thereby making it possible to protect the electronic devices that handle high voltages.

[0057] In this embodiment, the left side member 14 is provided on the side of the electrical component 10, but this embodiment is not limited to this configuration. The configuration of the electrical component 10 of this embodiment may also be applied to a case where a radiator or a fan motor is provided nearby. In this case, even if a large load is applied to the protector 36 from the radiator or the fan motor, the electrical component 10 can prevent damage to the fastening portion.

[0058] In this embodiment, the protector low rigidity portion 82 has an arm-like shape extending from the protector general portion 80 , and the protector high rigidity portion 84 has a shape bulging out from the protector general portion 80 toward the outer surface 32 .

[0059] In this configuration, the protector low-rigidity portion 82 has an arm-like extending shape, which realizes low rigidity. Also, by forming a convex shape on the protector general portion 80, it is possible to form a high-rigidity portion.

[0060] In this embodiment, the case high rigidity portion 52 is a rib 56 that protrudes outward from the outer surface 32 or a flange 58 that protrudes outward from the end of the case general portion 50 .

[0061] In such a configuration, the case 30 is generally an aluminum casting made of aluminum.

[0062] Therefore, it is relatively easy to form convex shapes such as the ribs 56 or flanges 58 on the case 30. This makes it relatively easy to form the case high rigidity portion 52 on the electrical component 10.

[0063] In this embodiment, the protector 36 has a plate-shaped inner member 90 and an outer member 92 that are arranged one on top of the other. The inner member 90, which is arranged on the case 30 side, has an inward bulging portion 100 that bulges toward the case 30, and the outer member 92, which is arranged on the outside of the inner member 90, has an outward bulging portion 102 that bulges in a direction away from the case 30. The inward bulging portion 100 and the outward bulging portion 102 are the protector high-rigidity portion 84.

[0064] In this configuration, the electrical component 10 can receive the load applied to the protector 36 with the inward bulging portion 100 that bulges toward the case 30 and the outward bulging portion 102 that bulges away from the case 30. This allows the electrical component 10 to further enhance the protective function of the protector 36.

[0065] In addition, in this embodiment, the inward bulging portion 100 and the outward bulging portion 102 are arranged so as to overlap at least partially in the direction in which the inner member 90 and the outer member 92 overlap.

[0066] In this configuration, the electrical component 10 can support the load applied to the protector 36 with the inward bulging portion 100 and the outward bulging portion 102, which are arranged in overlapping positions. This allows the rigidity of the protector 36 to be further increased compared to when the electrical component 10 is arranged so that the inward bulging portion 100 and the outward bulging portion 102 do not overlap.

[0067] In this embodiment, the maximum amount of protrusion of the flange 58 from the general case portion 50 in the direction in which the case 30 and the protector 36 are stacked is greater than the maximum amount of protrusion of the rib 56 from the general case portion 50 .

[0068] In this configuration, the maximum protrusion amount of the flange 58 is greater than the maximum protrusion amount of the rib 56, so when a load is applied, the protector 36 abuts against the flange 58, deforming the flange 58, and then abuts against the rib 56, deforming the rib 56.

[0069] This allows the electrical component 10 to absorb the load applied to the protector 36 in stages through deformation of the flange 58 and the rib 56, making it possible to absorb impact energy more efficiently than when the flange 58 and the rib 56 deform simultaneously.

[0070] The flange 58 of the case 30 forms an abutting surface that abuts against the housing portion flange 62 of the motor housing portion 20. Therefore, in order to widen the abutting surface, the flange 58 of the case 30 is likely to be designed to protrude a large amount from the general case portion 50. This makes it easy to make the maximum protrusion amount of the flange 58 of the electrical component 10 greater than the maximum protrusion amount of the rib 56.

[0071] In addition, in this embodiment, at least one pair of combinations of a fastening portion 98 and a fastening point 96 to which the fastening portion 98 is fastened is provided, and a rib 56 is arranged between the fastening points 96 in the pair of combinations.

[0072] In this configuration, a rib 56 is arranged between the fastening points 96 of the fastening portion 98, so that even if the protector low rigidity portion 82 in which the fastening portion 98 is provided is deformed, it is possible to suppress significant positional deviation between the protector 36 and the rib 56.

[0073] This allows the electrical component 10 to more appropriately perform the protective function of the protector 36 compared to when there is a significant misalignment between the protector 36 and the rib 56 .

[0074] The above describes the embodiments and variations of the present invention, but the above embodiments merely illustrate some of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

[0075] The electrical component 10 of the present embodiment described above has been described using an example in which electronic devices such as a high-voltage circuit and an inverter are housed within the case 30, but the electronic devices housed within the case 30 may also be low-voltage electronic devices.

[0076] Furthermore, in the electrical component 10 of the present embodiment described above, the protector 36 is disposed overlapping the left side surface 48 of the case 30, but the protector 36 may be disposed overlapping another surface of the case 30.

Claims

1. An electrical component having a case for accommodating an electronic device, the electrical component comprising a protector disposed over an outer surface of the case, the case having a flat general case portion and a high-rigidity case portion having higher rigidity than the general case portion, the protector having a flat general protector portion disposed along the outer surface, a low-rigidity protector portion having lower rigidity than the general protector portion, and a high-rigidity protector portion having higher rigidity than the general protector portion, the low-rigidity protector portion having fastening portions for fastening the protector to fastening points of the case, and the protector is attached to the case by fastening the fastening portions so that a portion of the high-rigidity protector portion faces the high-rigidity case portion.

2. An electrical component according to claim 1, wherein the protector low rigidity portion has an arm-like shape extending from the protector general portion, and the protector high rigidity portion has a shape bulging out from the protector general portion toward the outer surface.

3. An electrical component according to claim 2, wherein the high-rigidity case portion is a rib protruding outward from the outer surface, or a flange protruding outward from the end of the general case portion.

4. An electrical component as claimed in claim 3, wherein the protector has plate-shaped inner and outer members arranged one on top of the other, the inner member arranged on the case side has an inward bulging portion that bulges outwards towards the case, and the outer member arranged on the outside of the inner member has an outward bulging portion that bulges outwards away from the case, and the inward bulging portion and the outward bulging portion are the high-rigidity parts of the protector.

5. An electrical component according to claim 4, wherein the inward bulging portion and the outward bulging portion are arranged so as to overlap at least partially in the direction in which the inner member and the outer member overlap.

6. An electrical component according to claim 5, wherein the maximum amount of protrusion of the flange from the general case portion in the direction in which the case and the protector are stacked is greater than the maximum amount of protrusion of the rib from the general case portion.

7. An electrical component according to claim 5, wherein at least one pair of combinations of the fastening portion and the fastening point to which the fastening portion is fastened is provided, and the rib is disposed between the fastening points in the pair of combinations.

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