High-voltage device vehicle-mounted structure

Abstract

This high-voltage device in-vehicle structure includes a high-voltage device (1) and an interior component (6) fixed in a vehicle cabin so as to be adjacent to the high-voltage device (1). The high-voltage device (1) comprises: a base member (2) fixed to an attachment surface (P) in the vehicle cabin; a high-voltage component (3) provided on the base member (2); and a cover member (4) that is fixed to the base member (2) and that covers the high-voltage component (3). The cover member (4) is fixed to the base member (2) by fasteners (5). The fastening direction in which at least one fastener (5X) of the fasteners (5) is fastened to the base member (4) is set parallel to the attachment surface (P), and this fastener (5X) closely faces the interior component (6) in the fastening direction. The fastening direction in which the remaining fasteners (5) are fastened to the base member (4) is set perpendicular to the attachment surface (P).

Description

Technical Field

[0001] The present invention relates to an in-vehicle structure for a high-voltage device.

Background Art

[0002] Patent Document 1 below discloses an in-vehicle structure for a high-voltage device. The vehicle of Patent Document 1 is a hybrid electric vehicle (HEV), and the vehicle is equipped with a DC / AC inverter for external power supply as a high-voltage device. Such a high-voltage device may be arranged in the passenger compartment (including the cargo compartment) due to space constraints in the engine room (motor room). Inside the DC / AC inverter, high-voltage components that operate at a high voltage are built in. Here, the high voltage means a voltage of 60 volts or more. The high-voltage device requires a dedicated grounding circuit instead of a body ground, and its harness is orange and is distinguished from other wirings. The DC / AC inverter disclosed in Patent Document 1 converts the direct-current power of several hundred volts of the in-vehicle battery pack into alternating-current power of 100 volts (the household power voltage in Japan is alternating current of 100 volts).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since such a high-voltage device incorporates high-voltage components, it is not desired to be inadvertently disassembled by the user. For this reason, it is desirable to adopt an in-vehicle structure that cannot be disassembled by the user. The DC / AC inverter disclosed in Patent Document 1 is mounted in a recess formed in the floor surface of the cargo compartment, and the floor board of the cargo compartment covers the recess. However, the floor board can be easily removed. Therefore, the user can easily access the high-voltage device and can disassemble it while the high-voltage device is mounted in the vehicle.

[0005] The object of the present invention is to provide a vehicle-mounted high-voltage device structure that can prevent user access to built-in high-voltage components. [Means for solving the problem]

[0006] The vehicle-mounted high-voltage device structure according to the features of the present invention comprises a high-voltage device and an interior component fixed in the vehicle interior adjacent to the high-voltage device. The high-voltage device comprises a base member fixed to a mounting surface in the vehicle interior, a high-voltage component provided on the base member, and a cover member fixed to the base member and covering the high-voltage component. The cover member is fixed to the base member by fasteners. The fastening direction of at least one of the fasteners to the base member is set parallel to the mounting surface, and the at least one fastener faces in close proximity to the interior component in that fastening direction. The fastening direction of all or some of the remaining fasteners to the base member is set perpendicular to the mounting surface. [Effects of the Invention]

[0007] Based on the above features, it is possible to prevent users from disassembling the vehicle-mounted high-voltage device and to prevent users from accessing the built-in high-voltage components. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of a vehicle-mounted high-voltage device structure according to the first embodiment. [Figure 2] Figure 2 is a side view of the above-mentioned in-vehicle structure. [Figure 3] Figure 3 is a perspective view of the high-voltage device described above. [Figure 4] Figure 4 is a perspective view showing the bottom of the high-voltage device described above. [Figure 5] Figure 5 is a perspective view of the high-voltage device in the vehicle-mounted structure according to the second embodiment. [Figure 6A] Figure 6A is a cross-sectional view (before fastening) showing the deflection structure in the above-mentioned vehicle-mounted structure. [Figure 6B] Figure 6B is a cross-sectional view (after fastening) showing the above-mentioned deflection structure. [Figure 7A] Figure 7A is a cross-sectional view (before fastening) showing a modified example of the above-described flexible structure. [Figure 7B] Figure 7B is a cross-sectional view (after fastening) showing the modified example described above. [Figure 8] Figure 8 is a perspective view of a high-voltage device in an in-vehicle structure according to the third embodiment. [Modes for carrying out the invention]

[0009] The vehicle-mounted high-voltage device structure according to the embodiment will be described below with reference to the drawings. First, the vehicle-mounted high-voltage device structure according to the first embodiment will be described with reference to Figures 1 to 4.

[0010] The vehicle in this embodiment is a hybrid electric vehicle (HEV) or a battery electric vehicle (BEV), and the high-voltage device 1 in this embodiment is a junction box. The junction box controls the high-voltage connection and disconnection of the charging system, inverter, motor, and battery pack. The high-voltage device 1 incorporates high-voltage components 3 (see Figure 3), such as a controller (semiconductor chip), for performing the above control.

[0011] As shown in Figure 1, the high-voltage device 1 includes a base member 2 fixed to a mounting surface P inside the passenger compartment (including the cargo area). In this embodiment, the mounting surface P is the upper surface of the floor panel of the cargo area behind the rear seat installed inside the passenger compartment. The rear seat includes a lower unit 6 which serves as a seat cushion and an upper unit 7 which serves as a seat back. As will be explained in detail later, the base member 2 in this embodiment is constructed by fastening together a first member 2a made of aluminum alloy and a second member 2b made of steel press. The high-voltage component 3 (see Figure 3) described above is provided on the base member 2. The high-voltage component 3 may be provided directly on the first member 2a, or it may be provided on the first member 2a via a printed circuit board or the like.

[0012] An aluminum alloy cover member 4 is fixed to the base member 2 to protect the high-voltage component 3. The cover member 4 is fixed to the base member 2 so as to cover the high-voltage component 3, preventing the user from easily removing it from the base member 2. The cover member 4 is fixed to the first member 2a of the base member 2 by three or more fasteners 5 (five fasteners 5 in this embodiment). The fasteners 5 in this embodiment are tamper-proof hexalobular internal bolts. A projection is formed in the center of the hexalobular hole to prevent tampering, and the fasteners 5 cannot be fastened or removed without a special tool.

[0013] A high-voltage harness 9 (see Figure 3) is electrically connected to the high-voltage component 3, and the high-voltage harness 9 is led out from the cover member 4, i.e., from the high-voltage device 1. Mounting holes 2e (see Figure 4) for the mounting surface P are formed at the four corners of the base member 2. Two mounting holes 2e are formed in the first member 2a, and two mounting holes 2e are formed in the second member 2b. As shown in Figure 1, a weld bolt 8a is erected on the mounting surface P, and the weld bolt 8a is inserted through the mounting holes 2e of the first member 2a. The first member 2a is fixed to the mounting surface P by fastening a nut 8b to the weld bolt 8a from above.

[0014] Meanwhile, a bolt 8c is inserted from above into the mounting hole 2e of the second member 2b. The bolt 8c is fastened to a weld nut (not shown) provided on the mounting surface P, thereby fixing the second member 2b to the mounting surface P. As a result, the base member 2 is fixed to the mounting surface P. After the high-voltage device 1 is fixed to the mounting surface P, a resin trim member is attached, and the rear bolt 8c is hidden by the trim member. Therefore, access to this rear bolt 8c is also made difficult. The nut 8b and bolt 8c are fasteners that fix the base member 2 to the mounting surface P. The fastening direction of these fasteners is perpendicular to the mounting surface P. In this embodiment, since the mounting surface P is a horizontal plane, the fastening direction of the nut 8b and bolt 8c is perpendicular.

[0015] As described above, the rear seat of this embodiment includes a lower unit 6 (seat cushion) and an upper unit 7 (seat back). The lower unit 6 does not slide back and forth and is fixed to the floor panel. The upper unit 7 is attached to the rear end of the lower unit 6 or the floor panel via a hinge. The upper unit 7 has an adjustable reclining angle and can also be reclined onto the lower unit 6. A removable headrest 7a is attached to the upper part of the upper unit 7. The lower unit 6 is an interior part fixed in the vehicle interior adjacent to the high-voltage device 1.

[0016] As described above, the cover member 4 is fixed to the base member 2 by the fasteners 5. The fastening direction of one of the fasteners 5X of the fasteners 5 to the base member 2 is set parallel to the mounting surface P. In this embodiment, since the mounting surface P is a horizontal plane, this fastening direction is a horizontal direction, and more specifically, a front-rear direction. And this fastener 5X faces the lower unit 6 as an interior part in its fastening direction. Therefore, even if an attempt is made to remove the fastener 5X, there is not enough space to insert a tool, and the removal of the cover member 4 from the base member 2 is prevented. In particular, when the fastener 5X is an internal bolt having a hole for inserting a tool as in this embodiment, the tool needs to be inserted into the hole from the axial direction of the internal bolt. For this reason, the access direction to the fastener 5X is limited to the axial direction, and the fastener 5X cannot be removed without sufficient space in the axial direction. The fastening directions of the remaining fasteners 5 other than the fastener 5X to the base member 2 are set perpendicular to the mounting surface P. That is, this fastening direction is a vertical direction.

[0017] When assembling the vehicle, before fixing the lower unit 6 of the rear seat to the floor panel, the base member 2 is fixed to the mounting surface P. After that, after the high-voltage harness 9 is connected to the high-voltage component 3, the cover member 4 is fixed to the base member 2 by the fasteners 5 (including the fastener 5X). Since the lower unit 6 is not yet fixed to the floor panel, the fastener 5X can be easily fastened. For the fasteners 5 other than the fastener 5X, since their fastening direction is perpendicular to the mounting surface P, their fastening operations are easy to perform. After the cover member 4 is fixed to the base member 2, the lower unit 6 is fixed to the floor panel. As a result, the fastener 5X becomes difficult to remove. Incidentally, after fixing the high-voltage device 1 to which the high-voltage harness 9 and the cover member 4 are already attached to the mounting surface P, the lower unit 6 may be fixed to the floor panel.

[0018] To remove the cover member 4 from the base member 2 due to reasons such as a failure, the fastener 5X must be removed. That is, to remove the cover member 4 from the base member 2, it is necessary to remove the lower unit 6 from the floor panel. Therefore, the user is prevented from removing the cover member 4 from the base member 2.

[0019] In the present embodiment, a shade portion 6a extends rearward from the trailing edge of the lower unit 6 of the rear seat. The shade portion 6a of the lower unit 6 covers above the edge portion of the high-voltage device 1. Therefore, in the present embodiment, one of the fasteners 5 having a fastening direction perpendicular to the mounting surface P (the upper left fastener 5 in FIG. 1) also faces close to the shade portion 6a, that is, the lower unit 6 as the above-described interior component, in their fastening direction. Therefore, this fastener 5 is also difficult to remove after the lower unit 6 is fixed to the floor panel. As a result, the user is further prevented from removing the cover member 4 from the base member 2.

[0020] In this embodiment, two of the fasteners that secure the base member 2 to the mounting surface P, more specifically the front nut 8b and bolt 8c, also face in close proximity to the canopy portion 6a, i.e., the lower unit 6 as an interior component, in the direction of their fastening. Therefore, the front nut 8b and bolt 8c are difficult to remove after the lower unit 6 is fixed to the floor panel. As a result, removal of the base member 2 from the mounting surface P by the user is also prevented. Once the base member 2, i.e., the high-voltage device 1, can be removed from the mounting surface P, it becomes possible to access the fasteners 5X. Therefore, in this embodiment, removal of the base member 2, i.e., the high-voltage device 1, from the mounting surface P is also prevented in this way.

[0021] In this embodiment, two of the fasteners (the front nut 8b and bolt 8c) that secure the base member 2 to the mounting surface P are in close proximity to the lower unit 6, which is an interior component. However, if at least one of the fasteners that secure the base member 2 to the mounting surface P is in close proximity to the overhang portion 6a of the lower unit 6, which is an interior component, it is possible to prevent the base member 2, i.e., the high-voltage device 1, from being removed from the mounting surface P.

[0022] Furthermore, in this embodiment, the interior component that the fastener 5X faces in close proximity is the lower unit 6, and the interior component that the front nut 8b and bolt 8c face in close proximity is also the lower unit 6 (or its overhang portion 6a). However, at least one of the fasteners that fix the base member 2 to the mounting surface P may face in close proximity to an interior component other than the one that the fastener 5X faces in close proximity to. In this case as well, it is possible to prevent the base member 2, i.e., the high-voltage device 1 from being removed from the mounting surface P. For example, the upper unit 7 may be arranged such that the lower end of the upper unit 7 faces in close proximity to the front nut 8b or bolt 8c, without the overhang portion 6a being formed on the lower unit 6.

[0023] Furthermore, in this embodiment, as described above, the base member 2 is composed of a first member 2a and a second member 2b that are fastened to each other. By composing the base member 2 with a first member 2a and a second member 2b, the position of the fixing point of the base member 2 can be flexibly set by combining the second member 2b, which has a different shape depending on the vehicle model, with the first member 2a. The first member 2a and the second member 2b have overlapping ranges that overlap each other in a direction perpendicular to the mounting surface P. In the overlapping range, the second member 2b is located on the opposite side of the mounting surface P from the first member 2a, i.e., on the upper side. Furthermore, as shown in Figure 4, the second member 2b is fastened to the first member 2a by a nut 2d from the mounting surface P side, i.e., from below, in the overlapping range. The nut 2d is a fastener that fastens the first member 2a and the second member 2b to each other.

[0024] More specifically, two weld bolts 2c are provided projecting downwards toward the first member 2a from the overlapping area of ​​the second member 2b. These weld bolts 2c are inserted through holes (not shown) formed in the first member 2a, and the nuts 2d described above are fastened to the weld bolts 2c. Therefore, in order to separate the first member 2a and the second member 2b, it is necessary to access the nuts 2d from the back side of the base member 2. If the base member 2 is fixed to the mounting surface P, it is not possible to access the nuts 2d, so in order to access the nuts 2d, it is necessary to remove the base member 2 from the mounting surface P.

[0025] However, as mentioned above, since the front nuts 8b and bolts 8c are in close proximity to the canopy portion 6a, the base member 2 cannot be removed from the mounting surface P without removing the lower unit 6 from the floor panel. In other words, separation of the first member 2a and the second member 2b by the user is also prevented. As a result, it is impossible to separate the first member 2a and the second member 2b, remove the accessible rear nut 8b, and forcibly rotate the first member 2a around the front weld bolt 8a to access the fastener 5X. Since the first member 2a and the second member 2b cannot be separated, access to the fastener 5X as described above is impossible.

[0026] Next, the vehicle-mounted high-voltage device structure according to the second embodiment will be described with reference to Figures 5 to 6B. In the high-voltage device 1 of the first embodiment, the fastener 5X that prevents access is fastened to the box portion 4a of the cover member 4 (see Figures 3 and 4). In the high-voltage device 1X of this embodiment, the fastener 5X that prevents access is fastened to the cantilever tab 4b having a flexible structure of the cover member 4. Due to this configuration, the overall shape of the cover member 4 is slightly different from that of the first embodiment, but the other configurations are the same as in the first embodiment. The relationship with the lower unit 6 as an interior component is also the same as in the first embodiment, although it is not shown in the figures. Below, only the configurations that differ from the first embodiment will be described, and the same and equivalent configurations will be denoted by the same reference numerals and their descriptions will be omitted.

[0027] The box portion 4a of the first embodiment is not very flexible due to its box shape. Therefore, when fastening the fastener 5X in the box portion 4a, a gap may be formed between the inner surface of the box portion 4a and the base member 2. This possibility will be especially increased when fastening the fastener 5X after fastening other fasteners 5. When fastening the fastener 5X with a gap formed between the inner surface of the box portion 4a and the base member 2, the fastener 5X may loosen due to vibrations associated with vehicle operation.

[0028] In this embodiment, the cover member 4 is made of an aluminum alloy, but creep can still occur even with an aluminum alloy. If creep occurs in the box portion 4a due to the fastening force acting on the fastening portion of the fastener 5X of the box portion 4a, the fastener 5X will be more prone to loosening. Therefore, in this embodiment, the fastening portion of the fastener 5X is formed as a cantilever portion 4b having a flexible structure, and the cantilever portion 4b is securely attached to the base member 2 by the fastening force of the fastener 5X. As a result, loosening of the fastener 5X can be reliably prevented.

[0029] The deflection structure formed by the cantilever portion 4b will be explained with reference to Figures 6A and 6B. As shown in Figure 6A, the base member 2 has a female screw hole 2f through which the fastener 5X is fastened. On the other hand, the cantilever portion 4b has a bolt hole 4c through which the fastener 5X is inserted, corresponding to the female screw hole 2f. The cantilever portion 4b has an L-shaped extension from the main body of the cover member 4, and the bolt hole 4c is formed near its free end.

[0030] As shown in Figure 6B, when the fastener 5X is fastened to the female screw hole 2f, the fastening force of the fastener 5X causes the cantilever portion 4b to bend and come into close contact with the base member 2. As a result, a fastening force is effectively applied between the fastener 5X and the base member 2, and the cover member 4 is firmly fixed to the base member 2. This firm fastening effectively resists vibrations and prevents the fastener 5X from loosening.

[0031] Figures 7A and 7B show modified examples of the second embodiment, specifically modified examples of the deflection structure. In the second embodiment described above, a cantilever portion 4b was formed as the deflection structure, but in this modified example, a bridge portion 4d is formed as the deflection structure. As shown in Figure 7A, the bridge portion 4d has a gate-like shape extending from the main body of the cover member 4, and a bolt hole 4c is formed in its center. Both ends of the bridge portion 4d are integrally connected to the main body of the cover member 4.

[0032] As shown in Figure 7B, when the fastener 5X is fastened to the female screw hole 2f, the bridge portion 4d flexes due to the fastening force of the fastener 5X, causing the bridge portion 4d to be in close contact with the base member 2. As a result, a fastening force is effectively applied between the fastener 5X and the base member 2, and the cover member 4 is firmly fixed to the base member 2. This firm fastening effectively counteracts vibrations and prevents the fastener 5X from loosening.

[0033] In the second embodiment and its modified examples, the cantilever portion 4b and the bridge portion 4d were shown as specific examples of the deflection structure. However, the deflection structure is not limited to the cantilever portion 4b and the bridge portion 4d, as long as it is a structure that locally deflects the cover member 4 at the fastening portion of the fastener 5X to bring the cover member 4 and the base member 2 into close contact without any gaps. Furthermore, the local deflection of the cover member 4 due to the deflection structure may be elastic deformation or plastic deformation.

[0034] Next, the vehicle-mounted high-voltage device structure according to the third embodiment will be described with reference to Figure 8. In the second embodiment and its modified form described above, the flexible structure was provided on the cover member 4. In this embodiment, the flexible structure is provided on the base member 2. More specifically, a fixing tab 2g is erected perpendicularly from the base member 2 to the mounting surface P, and this fixing tab 2g flexes in the same manner as in the second embodiment and its modified form, thereby ensuring a tight, gap-free fit between the cover member 4 and the base member 2. Although the relationship with the lower unit 6 as an interior component is not shown in the figures, it is the same as that of the first embodiment. In the following, only the configurations that differ from the first embodiment will be described, and the same and equivalent configurations will be denoted by the same reference numerals and their descriptions will be omitted.

[0035] In the high-voltage device 1Y of this embodiment, the base member 2 is constructed by fixing an aluminum alloy base housing 2y to a steel pressed base plate 2x. The high-voltage component 3 is provided on the base housing 2y of the base member 2. A high-voltage harness 9 is electrically connected to the high-voltage component 3, as in the above embodiment. Note that the base plate 2x and the base housing 2y may be integrally constructed from, for example, an aluminum alloy.

[0036] The base plate 2x has mounting holes 2e formed therein, similar to the above embodiment, and is fixed to the mounting surface P by weld bolts 8a, nuts 8b, and bolts 8c, similar to the above embodiment. Four weld bolts 2h are erected from the base plate 2x. Corresponding to the weld bolts 2h, through holes 2i are formed in the bottom flange of the base housing 2y through which each weld bolt 2h is inserted. Nuts 2j are fastened to the weld bolts 2h inserted through the through holes 2i, thereby fixing the base housing 2y to the base plate 2x. The aforementioned fixing tab 2g is erected from the base plate 2x perpendicular to the mounting surface P.

[0037] In this embodiment as well, the aluminum alloy cover member 4 for protecting the high-voltage component 3 is fixed to the base member 2 (base plate 2x or base housing 2y) by five fasteners 5 (including fastener 5X). The fasteners 5 in this embodiment are also tamper-proof hexalobular internal bolts. Similar to the above embodiment, the direction in which the fasteners 5X are fastened to the base member 2 (base plate 2x) is set parallel to the mounting surface P. The through holes 2k through which the fasteners 5X are inserted are formed near the free end of the fixing tab 2g of the base member 2 described above.

[0038] A fastening hole 4e into which the fastener 5X is fastened is formed in the cover member 4. In this embodiment, the fastener 5X does not fix the cover member 4 to the base housing 2y, but fixes the cover member 4 to the fixing tab 2g of the base plate 2x via the fastening hole 4e. In other words, the cover member 4 is fixed to the base member 2 (base plate 2x) at the fixing tab 2g by the fastener 5X, whose fastening direction is parallel to the mounting surface P.

[0039] In this embodiment, the fastener 5X, whose fastening direction is parallel to the mounting surface P, faces close to the interior component (lower unit 6), thus preventing the fastener 5X from being removed. As a result, user access to the high-voltage component 3 built into the high-voltage device 1Y can be prevented. In other words, the user can be protected from high voltage. In this embodiment, one of the fasteners 5 having a fastening direction perpendicular to the mounting surface P (the fastener 5 closest to the fastening position of fastener 5X in Figure 8) also faces close to the canopy portion 6a, i.e., the lower unit 6 as described above, in its fastening direction. Therefore, this fastener 5 is also difficult to remove after the lower unit 6 is fixed to the floor panel. As a result, the user is further prevented from removing the cover member 4 from the base member 2 (base housing 2y).

[0040] Furthermore, two of the fasteners used to secure the base member 2 (base plate 2x) to the mounting surface P, specifically the nut 8b and bolt 8c fastened to the front mounting hole 2e, are also positioned in close proximity to the canopy portion 6a of the lower unit 6, which is an interior component, in the direction of their fastening. As a result, the front nut 8b and bolt 8c are difficult to remove after the lower unit 6 has been fixed to the floor panel. This also prevents the user from removing the base member 2 from the mounting surface P.

[0041] According to the above embodiment and its modifications, the cover member 4 is fixed to the base member 2 by three or more fasteners 5. The fastening direction of at least one of the fasteners 5X to the base member 2 is set parallel to the mounting surface P, and the at least one fastener 5X faces in close proximity to the interior component (lower unit 6) in that fastening direction. In addition, the fastening direction of all or some of the remaining fasteners 5 to the base member 2 is set perpendicular to the mounting surface P. Since the fasteners 5X face in close proximity to the interior component (lower unit 6), it is prevented from removing the fasteners 5X. As a result, it is possible to prevent the user from accessing the high-voltage component 3 built into the high-voltage device 1,1X. That is, the user can be protected from high voltage.

[0042] According to the second embodiment and its modified form described above, the cover member 4 has a flexible structure (such as a cantilever portion 4b or a bridge portion 4d) at the fastening portion of the fastener 5X. Therefore, at the fastening portion of the fastener 5X, the fastening force of the fastener 5X can make the cover member 4 tightly adhere to the base member 2. As a result, it is possible to prevent the fastener 5X from loosening.

[0043] According to the third embodiment described above, a fixing tab 2g is erected perpendicularly from the base member 2 to the mounting surface P, and the cover member 4 is fixed to the base member 2 at the fixing tab 2g by a fastener 5X whose fastening direction is parallel to the mounting surface P. In this case as well, since the fixing tab 2g flexes, the fastening force of the fastener 5X can make the base member 2 (fixing tab 2g) fit tightly against the cover member 4. As a result, it is possible to prevent the fastener 5X from loosening.

[0044] Furthermore, according to the above embodiment and its modifications, the base member 2 is fixed to the mounting surface P by two or more fasteners (nuts 8b and bolts 8c), and the fastening direction of the two or more fasteners (nuts 8b and bolts 8c) to the mounting surface P is set perpendicular to the mounting surface P. At least one of these fasteners (nuts 8b and bolts 8c) faces in close proximity to the interior component (the eaves portion 6a of the lower unit 6) in its fastening direction. Since at least one fastener faces in close proximity to the interior component, removal of this at least one fastener is prevented. As a result, it is possible to prevent the user from removing the base member 2, i.e., the high-voltage devices 1,1X from the mounting surface P. If the high-voltage devices 1,1X are removed from the mounting surface P, the fasteners 5X will be accessible. However, by preventing the removal of the high-voltage devices 1,1X from the mounting surface P, it is possible to further prevent the user from accessing the high-voltage components 3 built into the high-voltage devices 1,1X. Furthermore, the interior component that is in close proximity to at least one of the fasteners (nut 8b and bolt 8c) used to fix the base member 2 to the mounting surface P, and the interior component that is in close proximity to the fastener 5X, may be the same or different.

[0045] Furthermore, according to the above embodiment and modified example, the base member 2 is composed of a first member 2a and a second member 2b fastened to each other. The first member 2a and the second member 2b have overlapping areas that overlap each other in a direction perpendicular to the mounting surface P. In this overlapping area, the second member 2b is located on the opposite side of the mounting surface P from the first member 2a. In the overlapping area, the second member 2b is fastened to the first member 2a from the mounting surface P side by a fastener (nut 2d). Since the fastener (nut 2d) is located between the base member 2 and the mounting surface P, if the user is prevented from removing the base member 2, i.e., the high-voltage device 1,1X from the mounting surface P, as described above, then the user is prevented from accessing the fastener (nut 2d). Therefore, separation of the base member 2 into the first member 2a and the second member 2b can also be prevented, and the user's access to the fastener 5X can be reliably prevented. Furthermore, if the base member 2 is composed of a first member 2a and a second member 2b, the position of the fixing point of the base member 2 can be flexibly set by combining the second member 2b, which has a different shape, with the first member 2a.

[0046] In the above embodiments and modifications, the high-voltage devices 1 and 1X were junction boxes, but are not limited to these. The high-voltage devices in the present invention can be any devices that provide high voltage and are mounted inside the vehicle compartment (including the cargo compartment). For example, converter units and inverter units can also be high-voltage devices. The high voltage referred to here is a voltage of 60 volts or more, as described above. Vehicle-mounted high-voltage devices require a dedicated grounding circuit rather than body ground, and their harnesses are orange to distinguish them from other wiring. In addition, although the mounting surface P of the high-voltage devices 1 and 1X in the embodiments is a horizontal surface, it may also be a vertical surface or an inclined surface such as the surface of the side panel of the vehicle compartment (including the cargo compartment).

[0047] In the above embodiment and its modifications, there was only one fastener 5X having a fastening direction parallel to the mounting surface P. However, the fastening directions of two or more fasteners may be parallel to the mounting surface P. Furthermore, at least one of the two or more fasteners having a fastening direction parallel to the mounting surface P must be facing in close proximity to the interior component in that fastening direction. Also, in the above embodiment, all fasteners 5 other than the fastener 5X having a fastening direction parallel to the mounting surface P were fastened perpendicular to the mounting surface P. However, only some of the fasteners 5 other than the fastener 5X having a fastening direction parallel to the mounting surface P may be fastened perpendicular to the mounting surface P.

[0048] In the above embodiment and its modifications, the interior component positioned in close proximity to the fastener 5X, whose fastening direction is parallel to the mounting surface P, was the lower unit 6 of the rear seat. However, the interior component positioned in close proximity to the fastener 5X is not limited to this, and may be, for example, the center console. In this case, the high-voltage device is positioned, for example, in the foot space of the rear seat on the center console.

[0049] In the above embodiments and modifications, the base member 2 is composed of a first member 2a and a second member 2b that are fastened together. However, the base member 2 may be formed as a single member. Also, in the above embodiments and modifications, the cover member 4 was made of aluminum alloy, but it may be made of pressed steel. The formation of the cantilever portion 4b and bridge portion 4d of the cover member 4 may be easier by press forming. Furthermore, press-formed cantilever portion 4b and bridge portion 4d may be able to flex more effectively. [Explanation of symbols]

[0050] 1,1X,1Y High Voltage Device 2 Base member 2a First member 2b Second member 2d Nut (fastener between the first member 2a and the second member 2b) 2g fixed tab 3 High-voltage components 4 Cover component 4b Cantilever section (flexible structure) 4D bridge section (flexible structure) 5.5X (Fastener for cover member 4 to base member 2) 6. Lower unit (interior part) (of the rear seat) 6a (of the lower unit 6) canopy 8b Nut (fastener for attaching base member 2 to mounting surface P) 8c Bolt (fastener for attaching base member 2 to mounting surface P) 9. High-voltage harness P (Mounting surface of high-voltage device 1,1X,1Y)

Claims

1. A vehicle-mounted high-voltage device structure, A high-voltage device comprising a base member fixed to a mounting surface inside the vehicle interior, a high-voltage component provided on the base member, and a cover member fixed to the base member and covering the high-voltage component, It comprises interior components fixed to the vehicle interior adjacent to the high-voltage device, The cover member is fixed to the base member by three or more fasteners. The fastening direction of at least one of the fasteners to the base member is set parallel to the mounting surface, and the at least one fastener faces in close proximity to the interior component in the fastening direction. A vehicle-mounted high-voltage device structure in which the fastening direction of all or some of the remaining fasteners among the fasteners to the base member is set perpendicular to the mounting surface.

2. A vehicle-mounted high-voltage device structure according to claim 1, A vehicle-mounted high-voltage device structure, wherein the cover member has a flexible structure at the fastening portion of the fastener whose fastening direction is parallel to the mounting surface.

3. A vehicle-mounted high-voltage device structure according to claim 1, A fixing tab is erected perpendicularly from the base member to the mounting surface. A vehicle-mounted high-voltage device structure in which the cover member is fixed to the base member at the fixing tab by fasteners whose fastening direction is parallel to the mounting surface.

4. A vehicle-mounted high-voltage device structure according to any one of claims 1 to 3, The base member is fixed to the mounting surface by two or more fasteners, and the direction in which the two or more fasteners are fastened to the mounting surface is set perpendicular to the mounting surface. A high-voltage device in-vehicle structure in which at least one of the two or more fasteners is in close proximity to the interior component or another interior component provided in the vehicle interior in the direction of fastening.

5. A vehicle-mounted high-voltage device structure according to claim 4, The base member is composed of a first member and a second member fastened together, The first member and the second member have overlapping areas that overlap each other in a direction perpendicular to the mounting surface. In the overlapping area, the second member is located on the opposite side of the mounting surface from the first member. A vehicle-mounted high-voltage device structure in which the second member is fastened to the first member from the mounting surface side in the overlapping area by fasteners.

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