Equipment mounting structure

Abstract

The present invention provides an equipment mounting structure that can suppress a decrease in the sealing performance between the housing body and the lid when mounting unit equipment into the housing. [Solution] In the high-voltage power supply unit 10, the ESU 12 is housed in a housing casing 16. Mounting portions 82, 84 and boss portions 86, 88 protrude from the peripheral wall 24 of the housing body 20 of the housing casing 16, and the water heating unit 14 is positioned above the cover body 22 and attached to the housing body 20 via the mounting portions 82, 84 and boss portions 86, 88. As a result, in the housing casing 16, the load generated by the water heating unit 14 does not act on the cover body 22, thus suppressing a decrease in the sealing performance between the housing body 20 and the cover body 22.

Description

Technical Field

[0001] The present invention relates to an equipment mounting structure.

Background Art

[0002] Patent Document 1 discloses a PCU box serving as a high-voltage equipment storage box mounted on an electric automobile. The PCU box is arranged in the engine room of the vehicle, and a PCU upper cover is fastened to the upper part of the PCU box housing to close it. The PCU box accommodates a PCU such as an inverter and a converter, and the PCU is connected to a secondary battery or the like and a traveling motor or the like via high-voltage cables.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] Generally, in a vehicle, a storage housing in which high-voltage equipment is accommodated may be arranged in the engine room at the front part of the vehicle. Since the storage housing is arranged in the engine room, moisture easily adheres thereto. In the storage housing, a sealing material is interposed between the housing main body and a lid body or the like covering the upper part of the housing main body in order to prevent moisture from entering the interior.

[0005] On the other hand, since high-voltage equipment includes an inverter, a converter and the like, temperature adjustment is required to suppress temperature decrease and temperature rise. At this time, if the projected area of the unit equipment (temperature adjustment unit) arranged for temperature adjustment is small relative to the planar area of the lid body, it is conceivable to form boss portions for bolting the temperature adjustment unit equipment on the upper surface of the lid body, and fasten and fix the unit equipment to the upper surface of the lid body with bolts.

[0006] Incidentally, in vehicles, acceleration occurs not only in the longitudinal direction but also in the width direction and vertical direction, depending on the driving conditions and road surface. In a storage enclosure, the vibration of the vehicle causes the unit equipment mounted on the top surface of the lid to experience upward acceleration, and as a result, it receives an upward load corresponding to the acceleration and the weight of the unit equipment. In this case, the load causes the lid to be pulled upward in the center, which can cause a gap to form between the enclosure body and the lid, raising concerns that the sealing performance between the enclosure body and the lid may decrease. For this reason, there is room for improvement in the mounting of unit equipment such as temperature control units in storage enclosures.

[0007] This invention has been made in view of the above facts, and aims to provide an equipment mounting structure that can suppress a decrease in sealing performance between the housing body and the lid when attaching a unit equipment to the housing. [Means for solving the problem]

[0008] A first embodiment of a device mounting structure for achieving the above objective includes a housing body having an opening, and a lid that closes the opening of the housing body, wherein a sealing portion made of a sealing material is formed on the periphery of the opening of the housing body, and the lid is fastened and fixed to the outside of the sealing portion, and an electrical device is housed inside the housing housing; a unit device arranged opposite the lid; a plurality of protruding portions that protrude outward from the housing body to the lid at a plurality of locations around the housing body; and fastening members that are fastened to each of the protruding portions so that the unit device is positioned above the lid and fastened and fixed to the housing body.

[0009] In the equipment mounting structure according to the first embodiment, the housing has a housing body with an opening and a lid that closes the opening of the housing body, and electrical equipment is housed inside the housing. The housing body has a sealing portion formed by a sealing material around the periphery of the opening, and the lid is fastened and fixed to the outside of the sealing portion. In addition, a unit equipment that performs the required function for the electrical equipment is arranged in the housing, facing the lid above it.

[0010] Here, the housing is provided with multiple protrusions extending outward from the housing body to the lid at various points around the housing body, and a fastening member on which a unit device is placed is fastened to each of these protrusions.

[0011] Therefore, in the housing body, the unit equipment is fastened and fixed to the housing body at a protruding portion that extends outward from the housing body. As a result, even if the lid of the housing is subjected to an upward load from the unit equipment, the contact area between the housing body and the lid will not open, thus suppressing a decrease in the sealing performance between the housing body and the lid.

[0012] The equipment mounting structure according to the second embodiment includes, in the first embodiment, that one side of the fastening member in one direction is fastened to the protruding portion of the housing body on both sides in the other direction intersecting the one direction, and the other side is fastened to the protruding portion across the cover.

[0013] In the equipment mounting structure according to the second embodiment, one side of the fastening member in one direction is fastened to a protruding part of the housing body on both sides in the other direction intersecting that direction, and the other side of the one direction is fastened to the protruding part across the lid. As a result, in the housing, gaps in the contact area between the housing body and the lid can be effectively suppressed, and a decrease in the sealing performance between the housing body and the lid can be effectively suppressed.

[0014] The equipment mounting structure according to the third embodiment, in the first or second embodiment, includes a fastening member comprising: a plate on which the unit equipment is arranged and which is fastened on one side in one direction to the protruding portion of the housing body; and a mounting bracket to which the other side of the plate in the one direction is fastened and which is fastened to the protruding portion across the cover on the other side of the plate in the one direction.

[0015] In the equipment mounting structure according to the third embodiment, the fastening members include a plate and a mounting bracket. The plate is fastened to a protruding portion of the housing body on one side in one direction on which the unit equipment is placed. The mounting bracket is fastened to the other side of the plate in one direction, and is also fastened to the protruding portion across the lid on the other side of the plate in one direction. As a result, in the housing, the opening of the contact area between the housing body and the lid can be effectively suppressed with a simple configuration, and the reduction in the sealing performance between the housing body and the lid can be effectively suppressed.

[0016] The equipment mounting structure according to the fourth embodiment includes, in any one of the first to third embodiments, the storage housing is positioned in the front of the vehicle's engine compartment with one direction being the vehicle width direction and the other direction intersecting that direction being the vehicle's front-rear direction, a connector on which a cable connected to the electrical equipment is attached is mounted on the side of the housing body on the other side of the one direction, and a protective cover is fastened and fixed opposite to the side to cover and protect the connector, and the fastening member has a locking portion formed thereon on which the protective cover is suspended and locked.

[0017] In the equipment mounting structure according to the fourth embodiment, the housing is positioned at the front of the vehicle's engine compartment with one direction oriented in the vehicle width direction and the other direction intersecting that direction oriented in the vehicle's longitudinal direction. A connector to which a cable connected to the electrical equipment is attached is mounted on the other side of the housing body, and a protective cover that covers and protects the connector is fastened and fixed to this side. Furthermore, a locking portion is formed on the fastening member from which the protective cover is suspended and locked.

[0018] This prevents the protective cover from creating gaps at the contact point between the housing body and the lid, even when the protective cover is locked to the lid. Furthermore, when attaching or detaching the protective cover, it is suspended and locked by the locking mechanism, improving the ease of attaching and detaching the protective cover, as well as the ease of attaching and detaching the connector. [Effects of the Invention]

[0019] According to the present invention, when a unit device is attached to a storage housing, there is an effect that a decrease in sealing performance between the housing body and the lid can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] [Figure 1] It is a perspective view showing the main part of the high-voltage power supply device according to the present embodiment. [Figure 2] It is a perspective view of the housing body as viewed diagonally from the front right upper side, showing the outline thereof. [Figure 3] It is a plan view showing the main part of the housing body. [Figure 4] It is an exploded perspective view of the main part of the high-voltage power supply device as viewed diagonally from the front right upper side. [Figure 5] It is an exploded perspective view of the main part of the high-voltage power supply device as viewed diagonally from the rear right upper side. [Figure 6] It is a perspective view of the outline of the main part of the housing body as viewed diagonally from the front right upper side. [Figure 7] It is a cross-sectional view of the side wall where the connector is arranged, as viewed in the vehicle width direction. MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, the schematic configuration of the main part of the high-voltage power supply device 10 according to the present embodiment is shown in a perspective view as viewed diagonally from the front right upper side of the vehicle. In the drawings, the right side in the vehicle width direction as one direction is indicated by arrow HR, the front side in the vehicle longitudinal direction as the other direction intersecting the one direction is indicated by arrow FR, and the upper side in the vertical direction (vehicle vertical direction) is indicated by arrow UP.

[0022] The high-voltage power supply unit 10 according to this embodiment is mounted on a vehicle (not shown). The vehicle on which the high-voltage power supply unit 10 is mounted is equipped with an electric motor as a drive source for propulsion. Such vehicles include battery electric vehicles and fuel cell electric vehicles. In addition, the vehicle may be equipped with an engine (not shown) in addition to the electric motor as a drive source for propulsion, and the vehicle may be a hybrid electric vehicle or a plug-in hybrid electric vehicle.

[0023] As shown in Figure 1, the high-voltage power supply unit 10 is equipped with an ESU (Electricity Supply Unit) 12 as an electrical device, and the ESU 12 is located in the front of the vehicle in the engine compartment (not shown). The ESU 12 is configured with a DC-DC converter, inverter, etc., inside a housing (case) 16, and the ESU 12 converts the power stored in the storage battery (high-voltage battery) into the required high voltage voltage in the vehicle and supplies it to high-voltage loads such as electric motors. In the following description, the housing 16 in which the ESU 12 is housed will be collectively referred to as ESU 12.

[0024] Such an ESU 12 generates heat during operation, making it prone to temperature rise. Therefore, the high-voltage power supply unit 10 is equipped with a water heating unit 14 as a unit device. One side of the water heating unit 14 is connected to a radiator (not shown), and the other side is connected to the ESU 12, forming a circulation path for LLC (Long Life Coolant). In the high-voltage power supply unit 10, temperature-controlled coolant is circulated between the radiator, the water heating unit 14, and the ESU 12, thereby controlling the temperature of the ESU 12 to stay within a preset temperature range.

[0025] In this embodiment, the installation of the water heating unit 14 to the ESU 12 (storage housing 16) will be described. Figure 2 shows a perspective view of the storage housing 16 from the front right upwards of the vehicle, and Figure 3 shows a plan view of the main part of the storage housing 16 from above. Figure 4 shows an exploded perspective view of the main part of the high-voltage power supply unit 10 from the front right upwards of the vehicle, and Figure 5 shows an exploded perspective view of the main part of the high-voltage power supply unit 10 from the rear right upwards of the vehicle.

[0026] As shown in Figures 1, 2, 4, and 5, the storage enclosure 16 comprises a housing body 20 which is roughly rectangular in shape with one side (top) open, and a roughly flat cover body 22 which is positioned above the housing body 20 and closes the opening (opening 28 below) of the housing body 20. The housing body 20 and the cover body 22 of the storage enclosure 16 are made of cast aluminum.

[0027] The housing body 20 has a roughly rectangular box shape with one side open, formed by a peripheral wall 24 erected around the entire circumference from the periphery of a bottom plate (not shown). The peripheral wall 24 is formed by a front wall 26F on the front side of the vehicle, a rear wall 26B on the rear side of the vehicle, a side wall 26L on the left side of the vehicle width, and a side wall 26R on the right side of the vehicle width. The housing body 20 has a roughly rectangular opening 28 formed by the peripheral wall 24, which is a continuous wall of the front wall 26F, side wall 26L, rear wall 26B, and side wall 26R (see Figure 3), and the storage housing 16 is oriented with the opening 28 side of the housing body 20 facing upward.

[0028] The housing body 20 has a plurality of fixing legs 30 integrally formed at its lower part, with two fixing legs 30 protruding outward from the housing body 20 on both the right and left sides in the vehicle width direction (some details omitted from the illustration). The storage housing 16 is fastened to the vehicle body at the front of the engine compartment by bolts (not shown) inserted into through holes 30A formed through each of the fixing legs 30 of the housing body 20.

[0029] As shown in Figure 3, the upper end surface of the peripheral wall 24 of the housing body 20 is a sealing portion 32 (see Figure 3), and the sealing portion 32 is provided around the entire circumference of the opening 28. In addition, multiple cover mounting portions 34 are provided at the upper end of the peripheral wall 24.

[0030] Multiple cover mounting portions 34 are provided on each of the front wall 26F, side wall 26L, rear wall 26B, and side wall 26R, and each cover mounting portion 34 protrudes outward (opposite side from the opening 28). Each of the cover mounting portions 34 has multiple bolt holes (screw holes) 34A formed through it (they may be bottomed) for fastening the cover body 22 to the housing body 20, and each of the bolt holes 34A has an internal thread processed on its inner surface.

[0031] The cover body 22 is flat, and when viewed from above, its outer shape is substantially the same as that of the housing body 20. The housing body 20 is closed when the cover body 22 is placed on top of it, so that the cover body 22 makes surface contact with the upper end surface of the peripheral wall 24. The cover body 22 also has a plurality of mounting holes (not shown) on its peripheral edge, and these mounting holes are formed to penetrate the housing body 20 in the vertical direction of the vehicle, at positions corresponding to each of the bolt holes 34A of the cover mounting portion 34. The cover body 22 is fastened and fixed to the housing body 20 by screwing mounting bolts 34B, which are inserted into each of the mounting holes, into the bolt holes 34A.

[0032] For example, FIGP (Formed In Place Gasket), a liquid gasket using foamed foam as a sealing material, is used for the sealing portion 32, and the sealing portion 32 is formed by applying FIGP to the upper end surface of the peripheral wall 24. When the cover body 22 is attached to the housing body 20 of the housing 16, the sealing material (FIGP) is applied to the sealing portion 32 (upper end surface of the peripheral wall 24), so that the space between the upper end surface of the peripheral wall 24 and the cover body 22 is tightly sealed, making the inside airtight.

[0033] Multiple high-voltage connectors 36 (three in this embodiment as an example) are attached to the peripheral wall 24 (side wall 26R) on the right side in the vehicle width direction of the housing body 20 of the housing 16. In addition, a protective cover 50 is fitted to the housing 16, which integrally covers each of the connectors 36. Figure 6 shows the main part of the housing 16 in a perspective view looking diagonally upward from the front right of the vehicle, and Figure 7 shows the main part of the side wall 26R in a cross-sectional view looking forward of the vehicle.

[0034] As shown in Figure 6, etc., three connectors 36 are mounted on the housing 16, arranged in the front-to-rear direction of the vehicle. Each connector 36 is attached to the end of a three-core high-voltage cable 38 (for example, a three-phase cable), and the other end of each cable 38 is connected to an individual electrical load. In the high-voltage power supply unit 10, the ESU 12 and the electrical load are electrically connected by the mounting of the connectors 36 on the housing 16, enabling the supply of high-voltage power.

[0035] As shown in Figures 3 and 7, the housing body 20 has mounting portions 40 arranged on the side wall 26R corresponding to each of the connectors 36. As shown in Figure 7, each mounting portion 40 is substantially cylindrical and is provided outward (to the right) from the side wall 26R, and a socket hole 40A is formed through the mounting portion 40 in the vehicle width direction at its axial center. In the ESU 12 (storage housing 16), the tip of the socket 42 is inserted into the socket hole 40A from the inside.

[0036] The connector 36 has a protruding insertion portion 36A, and a visor portion 36B protruding from its upper end, with two retaining holes 36C formed vertically through the visor portion 36B. The connector 36 is electrically connected to the ESU 12 when the insertion portion 36A is inserted into the socket hole 40A of the mounting portion 40 and fitted into the socket 42.

[0037] As shown in Figures 3 and 7, the mounting portion 40 has a connector retaining portion 44 formed at its upper part. The connector retaining portions 44 are formed in pairs, straddling the axis (centerline) of the socket hole 40A of the mounting portion 40. Each of the connector retaining portions 44 has a bottomed bolt hole 44A, and each bolt hole 44A corresponds to each of the retaining holes 36C of the connector 36. In addition, the inner surface of the bolt hole 44A is threaded.

[0038] The connector 36 is attached to the mounting part 40 when the insertion part 36A is inserted into the socket hole 40A, and the lock bolt 46 inserted into the retaining hole 36C is screwed into the bolt hole 44A.

[0039] As shown in Figures 1, 4, and 5, the protective cover 50 is made of metal and has a roughly box-like shape with the housing body 20 side and the bottom open. Specifically, the protective cover 50 has an upper wall portion 54 formed by folding the upper side of a roughly flat cover portion 52 towards the housing body 20, a front wall portion 56 formed by folding the front side of the cover portion 52 towards the housing body 20, and a rear wall portion 58 formed by folding the rear side of the cover portion 52 towards the housing body 20. The protective cover 50 has a frame-like shape in which the rear wall portion 58, the upper wall portion 54, and the front wall portion 56 are continuous at the periphery of the cover portion 52, and is open to the housing body 20 side and the bottom.

[0040] The protective cover 50 has two locking portions 60 positioned on its upper wall portion 54, and two fixing portions 62 formed between the locking portions 60. Each locking portion 60 extends from the upper wall portion 54 to the left side in the vehicle width direction (towards the housing body 20), and a locking hole 60A is formed vertically through its tip. Each fixing portion 62 is formed by bending the tip of the upper wall portion 54 and extending upward, and a through hole 62A is formed through the fixing portion 62 in the vehicle width direction at its tip.

[0041] Furthermore, the fixing portion 62 is also positioned on the front wall portion 56 and the rear wall portion 58 of the protective cover 50. The fixing portion 62 is bent from the front wall portion 56 and the rear wall portion 58 and extends toward the opposite side from the cover portion 52 (vehicle front side and vehicle rear side), and a through hole 62A is formed through the extended tip in the vehicle width direction.

[0042] The housing body 20 of the storage housing 16 has boss portions 68 formed on each of the rib portion 64 and fin portion 66 as mounting parts for the protective cover 50. The boss portion 68 of the rib portion 64 corresponds to the fixing portion 62 of the front wall portion 56, and the boss portion 68 of the fin portion 66 corresponds to the fixing portion 62 of the rear wall portion 58.

[0043] The rib portion 64 is a block-like shape that is long in the vertical direction. The rib portion 64 protrudes toward the front of the vehicle from the upper part of the side wall 26R side of the front wall 26F, and its upper part extends above the housing body 20. The boss portion 68 of the rib portion 64 protrudes outward (to the right in the vehicle width direction) from the right side surface of the rib portion 64 in the vehicle width direction.

[0044] The housing body 20 has multiple fin portions 66 protruding from the rear wall 26B, and each of the fin portions 66 is a block-shaped, substantially flat plate. The boss portion 68 is formed on the fin portion 66A which protrudes from the upper part of the side wall 26R side of the rear wall 26B toward the rear of the vehicle and is arranged in the vertical direction, and protrudes outward from the right side surface in the vehicle width direction of the fin portion 66A.

[0045] Each of the boss portions 68 has a bottomed bolt hole 68A formed in its axial center, and the bolt hole 68A has internal threads machined on its inner surface. The protective cover 50 is positioned so that the cover portion 52 covers the connector 36, with the fixing portion 62 of the front wall portion 56 facing the boss portion 68 of the rib portion 64, and the fixing portion 62 of the rear wall portion 58 facing the boss portion 68 of the fin portion 66A. The protective cover 50 is fastened and fixed to the housing body 20 by fastening bolts 68B inserted into the through holes 62A of the front and rear fixing portions 62, which are then screwed into the bolt holes 68A of the boss portion 68.

[0046] On the other hand, as shown in Figures 1, 4, and 5, the water heating unit 14 has an external shape that is approximately a rectangular parallelepiped. In the high-voltage power supply unit 10, the water heating unit 14 is positioned above the housing casing 16, with the front-to-rear direction of the vehicle being the middle part of the housing casing 16, and the width direction of the vehicle being shifted to the left. A metal plate 70 is used as a support member for the water heating unit 14, and the plate 70 is approximately a rectangular flat plate with the water heating unit 14 attached to its upper surface. The water heating unit 14 is attached to the housing casing 16 via the plate 70, which is attached to the housing casing 16. Note that any configuration can be applied to attach the water heating unit 14 to the plate 70.

[0047] The water heating unit 14 and the plate 70 have a projected area that is smaller than the area of ​​the cover body 22 when viewed from above. In this embodiment, the length of the plate 70 in the vehicle width direction is longer than the length of the water heating unit 14 in the vehicle width direction, but the sizes of the water heating unit 14 and the plate 70 are not limited to this.

[0048] The plate 70 is provided with fixing portions 72 on both the front and rear sides of the vehicle at the left end in the vehicle width direction, and with fixing portions 74 on both the front and rear sides of the vehicle at the right end in the vehicle width direction.

[0049] Each of the fixing portions 72 is formed into a roughly L-shape by bending the tip that extends downward from the left end of the plate 70 in the vehicle width direction outward (to the left in the vehicle width direction), and a through hole 72A is formed vertically through the bent tip of the fixing portion 72. In addition, each of the fixing portions 74 has a through hole 74A formed vertically through the right end of the plate 70 in the vehicle width direction.

[0050] A bridging bracket 76 is used as a temporary bracket for attaching the water heating unit 14 to the housing casing 16. The bridging bracket 76 is made of a metal, roughly strip-shaped plate (for example, a steel plate), and its cross-section is formed into a roughly U-shape by bending both ends in the width direction downwards. The bridging bracket 76 is positioned above the cover body 22 with its longitudinal direction oriented in the vehicle's longitudinal direction, and the longitudinal dimension (vehicle's longitudinal direction) of the bridging bracket 76 is larger (longer) than the longitudinal dimension of the cover body 22. As a result, when the bridging bracket 76 is positioned above the cover body 22, both ends in the longitudinal direction are positioned outward from the cover body 22 (vehicle's longitudinal direction).

[0051] The bridging bracket 76 has one side plate portion 76A on the right side in the vehicle width direction, and the upper plate portion 76B is positioned to overlap the right end of the plate 70 in the vehicle width direction (specifically, the fixing portion 74). The bridging bracket 76 has through holes 78A formed vertically through each of the through holes 74A of the plate 70 in the upper plate portion 76B. The plate 70 is fastened and fixed to the bridging bracket 76 by inserting connecting bolts 80A, which are inserted into each of the through holes 74A of the plate 70, into each of the through holes 78A and screwing them into nuts 80B (see Figure 7).

[0052] The bridging bracket 76 has fastening holes 78B formed at the ends located on the outside of the cover body 22 on each of the longitudinal (vehicle front-rear direction) sides of the bridging bracket 76, and the fastening holes 78B are formed to penetrate vertically in the bridging bracket 76 (upper plate portion 76B).

[0053] On the other hand, the housing body 20 has mounting portions 82 and 84 positioned at the left end in the vehicle width direction as protruding parts, and a boss portion 86 positioned on the front side of the vehicle and a boss portion 88 positioned on the rear side of the vehicle on the right side in the vehicle width direction. The mounting portions 82 and 84 and the boss portions 86 and 88 are each formed on the housing body 20 to the outside of the cover mounting portion 34.

[0054] The mounting portion 82 corresponds to the fixing portion 72 on the left side in the vehicle width direction and on the front side of the plate 70, and is formed to protrude outward in the vehicle width direction from the upper end of the side wall 26L of the housing body 20. The mounting portion 82 is flat, and a through hole 82A is formed through the mounting portion 82 in the vertical direction.

[0055] The mounting portion 84 corresponds to the fixing portion 72 on the left side in the vehicle width direction and on the rear side of the plate 70, and is formed to protrude outward in the vehicle width direction from the upper end of the side wall 26L of the housing body 20. The mounting portion 84 is a wide, flat plate (its dimension in the vehicle front-rear direction is wider than its dimension in the vehicle width direction). A through hole 84A is formed vertically through the end of the mounting portion 84 on the rear side of the vehicle.

[0056] The boss portion 86 is a roughly cylindrical shape that protrudes upward from the upper end surface of the rib portion 64 on the front side of the housing body 20, and has a bolt hole 86A formed in its axial center. The boss portion 88 is a roughly cylindrical shape that protrudes upward from the upper end surface of the fin portion 66A on the rear side of the housing body 20, and has a bolt hole 88A formed in its axial center. The bolt holes 86A of the boss portion 86 and the bolt holes 88A of the boss portion 88 are each fitted with internal threads on their inner circumferential surfaces.

[0057] When the plate 70 and the bridging bracket 76 are positioned on top of the housing 16, each of the fixing portions 72 of the plate 70 and each of the ends of the bridging bracket 76 are positioned opposite the mounting portions 82, 84 and boss portions 86, 88 of the housing body 20, respectively.

[0058] The plate 70 and the bridging bracket 76 are fastened and fixed to the housing body 20 at the left end in the vehicle width direction by fastening bolts 90 inserted into through holes 72A in the fixing portion 72 of the plate 70, which are then inserted into through holes 82A in the mounting portion 82 and through holes 84A in the mounting portion 84 and screwed into nuts (not shown). Alternatively, instead of nuts, female threads may be machined on the inner circumferential surfaces of the through holes 82A and 84A, and the fastening bolts 90 may be screwed into the through holes 82A and 84A.

[0059] Furthermore, the plate 70 and the bridging bracket 76 are fastened and fixed to the housing body 20 by fastening bolts 90 inserted into fastening holes 78B at both ends of the bridging bracket 76, which are then screwed into bolt holes 86A of the boss portion 86 and bolt holes 88A of the boss portion 88, respectively.

[0060] As a result, the plate 70 and the bridging bracket 76 are fastened and fixed to the housing body 20, and the water heating unit 14 is attached to the housing 16 via the plate 70 and the bridging bracket 76.

[0061] On the other hand, a protective cover 50 is attached to the right side in the vehicle width direction of the housing body 20, and the tip of the upper wall portion 54 of this protective cover 50 is opposed to the side plate portion 76A of the bridging bracket 76 attached to the housing body 20.

[0062] Through holes 92 are formed in the vehicle width direction in the side plate portion 76A of the bridging bracket 76 at positions corresponding to each of the through holes 62A in the upper wall portion 54 of the protective cover 50. This allows the protective cover 50 to be fastened and fixed to the bridging bracket 76 by inserting fastening bolts 68B, which are inserted into the through holes 62A, into the through holes 92, and screwing on nuts (not shown). Alternatively, female threads may be machined on the inner surface of the through holes 92 instead of nuts.

[0063] Furthermore, through holes 94 are formed in the side plate portion 76A of the bridging bracket 76 at positions corresponding to each of the locking portions 60 of the upper wall portion 54 of the protective cover 50. The through holes 94 have an opening width (width dimension of the opening along the vehicle's longitudinal direction) that allows the locking portion 60 to be inserted, and are elongated holes that are long in the vehicle's longitudinal direction (the longitudinal direction of the bridging bracket 76). The through holes 94 are formed to penetrate the side plate portion 76A of the bridging bracket 76 in the vehicle's width direction. In addition, a locking projection 96 is formed in the through hole 94 of the bridging bracket 76, and the locking projection 96 protrudes upward from the bottom within the through hole 94. The locking projection 96 is also thick enough to be inserted into the locking hole 60A of the locking portion 60.

[0064] When the protective cover 50 is attached to the housing body 20, each of the locking portions 60 on the upper wall portion 54 is inserted into the through-hole 94 of the bridging bracket 76, and the locking projection 96 is inserted into the locking hole 60A of the locking portion 60, thereby enabling it to be suspended from the bridging bracket 76. Furthermore, by being suspended from the bridging bracket 76, the protective cover 50 is roughly positioned relative to both the housing body 20 and the bridging bracket 76.

[0065] Furthermore, the bridging bracket 76 has multiple through holes 98 formed in the upper plate portion 76B. The through holes 98 on both sides in the longitudinal direction of the bridging bracket 76 are round through holes 98A, and the through holes 98B between the through holes 98A are elongated through holes 98B. The longitudinal direction of the through holes 98B is aligned with the longitudinal direction of the bridging bracket 76.

[0066] The through holes 98 (98A, 98B) correspond to the connector fastening portions 44 (bolt holes 44A) of the mounting portions 40 located on the side wall 26R of the housing body 20. Specifically, the through hole 98A corresponds to the bolt hole 44A on the rear side of the mounting portion 40 and the bolt hole 44A on the front side of the mounting portion 40. The through hole 98B also has two adjacent bolt holes 44A on one side in the rear mounting portion 40 and the mounting portion 40 adjacent to it (the central mounting portion 40), and the other side corresponds to two adjacent bolt holes 44A on the front mounting portion 40 and the mounting portion 40 adjacent to it (the central mounting portion 40).

[0067] The through holes 98 (98A, 98B) are formed vertically through the upper plate portion 76B, and the peripheral edges of the openings are folded downward to form a folded portion 99. Furthermore, the opening widths of the through holes 98 (the inner diameter in through hole 98A and the width dimension along the direction intersecting the longitudinal direction in through hole 98B) are such that the lock bolt 46 and the tool (socket) for turning the lock bolt 46 can be inserted. As a result, even when the connector 36 is covered (enclosed) by the protective cover 50 in the housing 16, operations on the lock bolt 46 (operations for attaching and detaching the connector 36) are possible.

[0068] In the high-voltage power supply unit 10 configured in this way, the ESU 12 is housed inside the housing casing 16. In addition, the water heating unit 14 is located on top of the housing casing 16 in the high-voltage power supply unit 10.

[0069] In the housing enclosure 16, the opening 28 of the housing body 20 is closed by the cover body 22. In this case, the housing body 20 has a sealing portion 32 on the upper end surface of the peripheral wall 24 that is in surface contact with the cover body 22, and mounting bolts 34B are used at multiple locations on the cover mounting portion 34 on the outer circumference side of the sealing portion 32 to fasten and fix the cover body 22 to the housing body 20. As a result, the housing enclosure 16 is able to achieve high airtightness.

[0070] On the other hand, the high-voltage power supply unit 10, being mounted on the vehicle, is subjected to acceleration in the longitudinal, longitudinal, and vertical directions as the vehicle moves. In this case, the housing 16 and the water heating unit 14, upon receiving acceleration, exert a load on their surroundings corresponding to the acceleration and their own weight.

[0071] Therefore, if a boss portion or the like is formed on the upper surface of the cover body 22 and the water heating unit 14 is attached to this boss portion, the cover body 22 will receive an upward load from the water heating unit 14 and will be lifted by the water heating unit 14. As a result, in the housing casing 16, a so-called gap will occur between the housing body 20 and the cover body 22, with the cover mounting portion 34 acting as a fulcrum to widen the seal portion 32, causing a decrease in the sealing performance of the seal portion 32.

[0072] In this embodiment, the water heating unit 14 is not attached (supported) to the cover body 22. In addition, in the housing casing 16, mounting portions 82, 84 and boss portions 86, 88 are formed on the housing body 20 outside the cover mounting portion 34, to which the water heating unit 14 is attached.

[0073] As a result, even if the water heating unit 14 is subjected to upward acceleration in the housing 16, the cover body 22 is not pulled up by the water heating unit 14, and no gap is created between the housing body 20 and the cover body 22. Therefore, the housing 16 can suppress a decrease in the sealing performance between the housing body 20 and the cover body 22.

[0074] Furthermore, the housing casing 16 is provided with a bridging bracket 76, which is positioned across the cover body 22 and attached to bosses 86 and 88. The water heating unit 14 is attached to the housing body 20, with one side in the vehicle width direction attached to mounting parts 82 and 84, and the other side in the vehicle width direction attached to the bridging bracket 76.

[0075] As a result, in the housing enclosure 16, even if the water heating unit 14 is small relative to the cover body 22 (i.e., even if the projected area is small), the water heating unit 14 can be attached to the housing body 20 without going through the cover body 22. Therefore, in the housing enclosure 16, the attachment of the water heating unit 14 to the housing body 20 is easy. Moreover, in the housing enclosure 16, a simple configuration of providing a bridging bracket 76 that spans between boss portions 86 and boss portions 88 can suppress a decrease in the sealing performance between the housing body 20 and the cover body 22.

[0076] Meanwhile, the housing 16 is provided with a protective cover 50 that covers the connector 36. The bridging bracket 76 has through holes 94 formed in the side plate portion 76A, and a locking projection 96 is formed inside the through holes 94. The protective cover 50 also has a locking hole 60A formed in the locking portion 60.

[0077] As a result, the protective cover 50 is suspended from the bridging bracket 76 by inserting the locking portion 60 into the through hole 94 of the bridging bracket 76 and inserting the locking projection 96 into the locking hole 60A of the locking portion 60. Simultaneously, the protective cover 50 is positioned on the housing body 20 and the bridging bracket 76 by being suspended from the bridging bracket 76. Therefore, the work of attaching and detaching the protective cover 50 is made easier in the housing 16.

[0078] Furthermore, the bridging bracket 76 has through holes 98 (98A, 98B) formed in the upper plate portion 76B, and the through holes 98 correspond to the bolt holes 44A in the connector fastening portion 44 of the mounting portion 40 of the connector 36. Therefore, even if the bridging bracket 76 on which the protective cover 50 is suspended is positioned above the mounting portion 40 in the housing 16, the lock bolt 46 can be turned without removing the bridging bracket 76, etc., and the workability of the connector 36 is not reduced.

[0079] Furthermore, the bridging bracket 76 has a substantially U-shaped cross-section, which improves its rigidity (strength against load). In addition, the bridging bracket 76 has folded-over portions 99 formed on each peripheral edge of the through-hole 98, which suppresses the reduction in rigidity that occurs due to the formation of the through-hole 98.

[0080] In the embodiment described above, the water heating unit 14 is attached to the plate 70, and the plate 70 is attached to the mounting parts 82 and 84, and also to the bridging bracket 76, thereby attaching it to the housing body 20. However, instead of using a plate, one side of the unit equipment case may be attached to a protruding part of the housing body, and the other side to the erection bracket. Alternatively, the functions of the plate and erection bracket may be combined with those of the unit equipment case, so that the unit equipment can be attached to each of the multiple protruding parts of the housing body. [Explanation of Symbols]

[0081] 10. High-voltage power supply 12 ESU (Electrical Equipment) 14. Water heating unit (unit equipment) 16 Storage enclosure 20 Main unit 22 Cover (lid) 24 Peripheral wall 32 Seal part 36 connectors 38 Cables 50 protective covers 60 Locking part 70 Plate (fastening member, 76. Bridging bracket (fastening member, erection bracket) 82, 84 Mounting part (protruding part) 86, 88 Boss section (protruding section) 96 Locking protrusion (locking part)

Claims

1. A housing enclosure having an opening in the housing body and a cover that closes the opening in the housing body, wherein a sealing portion made of a sealing material is formed around the periphery of the opening in the housing body, and the cover is fastened and fixed to the outside of the sealing portion, and electrical equipment is housed inside, A unit device positioned opposite the cover, Multiple protruding portions are provided at multiple locations around the housing body, extending outward from the housing body to the lid, A fastening member is fastened to each of the aforementioned protruding portions, thereby positioning the unit device above the lid and fastening it to the housing body. Equipment mounting structure including.

2. The equipment mounting structure according to claim 1, wherein one side of the fastening member in one direction is fastened to the protruding portion of the housing body on both sides in the other direction intersecting the one direction, and the other side is fastened to the protruding portion across the cover.

3. The fastening member is A plate on which the aforementioned unit equipment is arranged, with one side in one direction fastened to the protruding portion of the housing body, The plate is fastened on the other side in the one direction, and the other side of the plate in the one direction is fastened to the protruding portion, spanning the cover, The equipment mounting structure according to claim 1, including the following:

4. The aforementioned storage enclosure is positioned at the front of the vehicle's engine compartment, with one direction oriented in the vehicle width direction and the other direction intersecting that direction oriented in the vehicle's longitudinal direction. A connector to which a cable connected to the electrical equipment is attached is mounted on the other side of the housing body in the same direction, and a protective cover is fastened and fixed opposite to the said side to cover and protect the connector. The fastening member has a locking portion formed therein, from which the protective cover is suspended and secured. The equipment mounting structure according to claim 1, which includes the following:

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