Vehicle-mounted structure of high-voltage device

Abstract

This vehicle-mounted structure for a high-voltage device is provided with a high-voltage device (1) and an interior member (6) that is adjacent to the high-voltage device (1) and that is affixed to the interior of a vehicle cabin. A high-voltage device (1) is provided with: a base member (2) fixed to a mounting surface (P) in a vehicle interior; a high-voltage member (3) provided on the base member (2); and a cover member (4) fixed to the base member (2) and covering the high-voltage member (3). The cover member (4) is fixed to the base member (2) by a fastener (5). At least one fastener (5X) among the fasteners (5) is set parallel to the mounting surface (P) in the fastening direction of the base member (2), and the fastener (5X) approaches and faces the interior member (6) in the fastening direction thereof. The direction in which the remaining fastener (5) is fastened to the base member (2) is set perpendicular to the attachment surface (P).

Description

Technical Field

[0001] The invention relates to a vehicle-mounted structure for a high voltage device. Background Art

[0002] The following patent document 1 discloses a vehicle-mounted structure of a high-voltage device. The vehicle of patent document 1 is a hybrid electric vehicle (HEV), which is equipped with a DC / AC inverter for external power supply of the high-voltage device. Such a high-voltage device is sometimes arranged in the vehicle compartment (including the luggage compartment) due to space limitations in the engine room (motor room), etc. High-voltage components that operate at high voltage are built into the DC / AC inverter. In addition, the high voltage mentioned here refers to a voltage of more than 60 volts, and the high-voltage device requires a dedicated grounding circuit instead of a main body grounding, and the wiring harness is distinguished from other wiring in orange. In addition, the DC / AC inverter disclosed in patent document 1 converts the hundreds of volts of direct current of the vehicle-mounted battery pack into 100 volts of alternating current (the household power voltage in Japan is 100 volts of alternating current).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent No. 5831343

[0006] Problems to be solved by the invention

[0007] Such a high-voltage device has built-in high-voltage components, so it is not desirable for the user to accidentally disassemble it. Therefore, it is desirable to adopt a vehicle-mounted structure that cannot be disassembled by the user. The DC / AC inverter disclosed in Patent Document 1 is mounted in a recess formed on the bottom surface of the luggage compartment, and the bottom plate of the luggage compartment covers the recess. However, the bottom plate is easily removed. Therefore, the user can easily access the high-voltage device and disassemble it in a state where the high-voltage device is mounted. Summary of the invention

[0008] An object of the present invention is to provide a high voltage device vehicle-mounted structure capable of preventing a user from contacting built-in high voltage components.

[0009] The high voltage device vehicle-mounted structure characterized by the present invention comprises a high voltage device and an interior component adjacent to the high voltage device and fixed in the vehicle compartment. The high voltage device comprises: a base component fixed on a mounting surface in the vehicle compartment, a high voltage component arranged on the base component, and a cover component fixed to the base component and covering the high voltage component. The cover component is fixed to the base component by fasteners. The fastening direction of at least one of the fasteners to the base component is set to be parallel to the mounting surface, and the at least one fastener approaches and faces the interior component in its fastening direction. The fastening direction of all or part of the remaining fasteners to the base component is set to be perpendicular to the mounting surface.

[0010] Effects of the Invention

[0011] According to the above features, it is possible to prevent a user from disassembling the vehicle-mounted high voltage device and to prevent a user from contacting built-in high voltage components. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a perspective view of the high voltage device vehicle-mounting structure according to the first embodiment.

[0013] Figure 2 It is a side view of the above-mentioned vehicle-mounted structure.

[0014] Figure 3 is a perspective view of the high voltage device.

[0015] Figure 4 It is a perspective view showing the bottom surface of the high voltage device.

[0016] Figure 5 It is a perspective view of a high voltage device in the vehicle-mounted structure according to the second embodiment.

[0017] Fig. 6A 2 is a cross-sectional view showing the flexure structure of the above-mentioned vehicle-mounted structure (before tightening).

[0018] Figure 6B is a cross-sectional view showing the above-mentioned flexure structure (after tightening).

[0019] Fig. 7A It is a cross-sectional view showing a modified example of the above-mentioned flexure structure (before tightening).

[0020] Figure 7B : is a cross-sectional view showing the above-mentioned modified example (after tightening).

[0021] Figure 8 It is a perspective view of a high voltage device in the vehicle-mounted structure according to the third embodiment. DETAILED DESCRIPTION

[0022] Hereinafter, the high voltage device vehicle-mounted structure of this embodiment will be described with reference to the accompanying drawings. Figure 1 to Figure 4 The high voltage device vehicle-mounting structure according to the first embodiment will be described.

[0023] The vehicle of this embodiment is a hybrid electric vehicle (HEV) or a battery electric vehicle (BEV), and the high voltage device 1 of 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 has a built-in high voltage component 3 (see Figure 3 ).

[0024] like Figure 1 As shown, the high voltage device 1 includes a base component 2 fixed to a mounting surface P in a vehicle compartment (including a luggage compartment). The mounting surface P in this embodiment is the upper surface of the floor of the luggage compartment behind the rear seat mounted in the vehicle compartment. The rear seat includes a lower unit 6 as a seat cushion and an upper unit 7 as a seat back. As will be described in detail later, the base component 2 of this embodiment is formed by fastening a first component 2a made of aluminum alloy and a second component 2b made of steel stamping to each other. The above-mentioned high voltage component 3 (see Figure 3 ). The high voltage component 3 may be directly provided on the first component 2a, or may be provided on the first component 2a via a printed circuit board or the like.

[0025] A cover member 4 made of aluminum alloy for protecting the high voltage component 3 is fixed to the base member 2. The cover member 4 is fixed to the base member 2 in a manner that covers the high voltage component 3 so that it is not easy for a user to remove the high voltage component 3 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 fastener 5 in this embodiment is a bolt in a hexagon socket to prevent malicious damage. A protrusion to prevent malicious damage is formed in the center of the hexagon socket, and the fastener 5 cannot be fastened or removed without a special tool.

[0026] High voltage harness 9 (refer to Figure 3 ) is electrically connected to the high voltage component 3, and the high voltage harness 9 is led out from the cover component 4, that is, from the high voltage device 1. The four corners of the base component 2 are formed with mounting holes 2e for mounting to the mounting surface P (see Figure 4 ). Two mounting holes 2e are formed on the first component 2a, and two mounting holes 2e are formed on the second component 2b. Figure 1 As shown, a welding bolt 8a is vertically provided on the mounting surface P, and the welding bolt 8a is inserted through the mounting hole 2e of the first member 2a. The first member 2a is fixed to the mounting surface P by tightening a nut 8b on the welding bolt 8a from above.

[0027] On the other hand, the bolt 8c is inserted into the mounting hole 2e of the second component 2b from above. The second component 2b is fixed to the mounting surface P by fastening the bolt 8c to a welding nut (not shown) provided on the mounting surface P. As a result, the base component 2 is fixed to the mounting surface P. In addition, by installing a decorative component made of resin after the high voltage device 1 is fixed to the mounting surface P, the bolt 8c on the rear side is hidden by the decorative component. Therefore, it is also difficult to contact the bolt 8c on the rear side. In addition, the nut 8b and the bolt 8c are fasteners that fix the base component 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 the bolt 8c is a vertical direction.

[0028] As described above, the rear seat of the present embodiment includes a lower unit 6 (seat cushion) and an upper unit 7 (seat back). The lower unit 6 does not slide forward and backward but is fixed to the floor. The upper unit 7 is mounted on the rear end or the bottom plate of the lower unit 6 via a hinge. The upper unit 7 can adjust the tilt angle and can also be tilted on the lower unit 6. A removable headrest 7a is mounted on the upper part of the upper unit 7. The lower unit 6 is an interior component that is adjacent to the high voltage device 1 and fixed in the vehicle compartment.

[0029] As described above, the cover member 4 is fixed to the base member 2 by the fasteners 5, but the fastening direction of one fastener 5X of the fasteners 5 to the base member 2 is set to be parallel to the mounting surface P. In the present embodiment, since the mounting surface P is a horizontal plane, the fastening direction is a horizontal direction, more specifically, a front-back direction. Moreover, the fastener 5X is close to and faces the lower unit 6 as an internal component in its fastening direction. Therefore, even if the fastener 5X is to be removed, there is not enough space to insert a tool, which prevents the cover member 4 from being removed from the base member 2. In particular, if the fastener 5X is an internal bolt having a hole for inserting a tool as in the present embodiment, the tool needs to be inserted into the hole from the axial direction of the internal bolt. Therefore, the contact direction with the fastener 5X is limited in the axial direction, and if there is not enough space in the axial direction, the fastener 5X cannot be removed. The fastening direction of the remaining fasteners 5 other than the fastener 5X to the base member 2 is set to be perpendicular to the mounting surface P. That is, the fastening direction is a vertical direction.

[0030] When assembling the vehicle, the base member 2 is fixed to the mounting surface P before the lower unit 6 of the rear seat is fixed to the floor. 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 fasteners 5X). The lower unit 6 has not yet been fixed to the floor, so the fastening of the fasteners 5X can be easily performed. Since the fastening directions of the fasteners 5 other than the fasteners 5X are 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. As a result, the fasteners 5X become difficult to remove. Alternatively, the lower unit 6 may be fixed to the floor after the high voltage device 1 to which the high voltage harness 9 and the cover member 4 have been mounted is fixed to the mounting surface P.

[0031] When the cover member 4 needs to be removed from the base member 2 due to a malfunction or the like, the fastener 5X must be removed. That is, in order to remove the cover member 4 from the base member 2, the lower unit 6 needs to be removed from the bottom plate. Therefore, the user is prevented from removing the cover member 4 from the base member 2.

[0032] In the present embodiment, a flange 6a extends rearward from the rear edge of the lower unit 6 of the rear seat. The flange 6a of the lower unit 6 covers the upper edge 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 ( Figure 1 The upper left fastener 5 in the figure is also close to and faces the eaves 6a, that is, the lower unit 6 as the interior component in their fastening direction. Therefore, the fastener 5 is also difficult to remove after the lower unit 6 is fixed to the floor. As a result, it is possible to further prevent the user from removing the cover member 4 from the base member 2.

[0033] In the present embodiment, further, two of the fasteners that fix the base member 2 to the installation surface P, more specifically, the nut 8b and the bolt 8c on the front side, are also close to and face the eaves 6a, that is, the lower unit 6 as the above-mentioned interior component, in their fastening directions. Therefore, the nut 8b and the bolt 8c on the front side are also difficult to remove after the lower unit 6 is fixed to the floor. As a result, it is also possible to prevent the user from removing the base member 2 from the installation surface P. If the base member 2, that is, the high voltage device 1, can be removed from the installation surface P, then the fastener 5X can be accessed. Therefore, in the present embodiment, the base member 2, that is, the high voltage device 1, is also prevented from being removed from the installation surface P in this way.

[0034] In addition, in the present embodiment, two of the fasteners (the nut 8b and the bolt 8c on the front side) that fix the base member 2 to the mounting surface P are close to and face the lower unit 6 that is the internal component. However, if at least one of the fasteners that fix the base member 2 to the mounting surface P is close to and faces the flange portion 6a of the lower unit 6 that is the internal component, the base member 2, that is, the high voltage device 1, can be prevented from being removed from the mounting surface P.

[0035] In addition, in the present embodiment, the internal component that the fastener 5X approaches and faces is the lower unit 6, and the internal component that the nut 8b and the bolt 8c on the front side approach and face is also the lower unit 6 (the flange 6a). However, at least one of the fasteners that fix the base member 2 to the mounting surface P may also approach and face an internal component different from the internal component that the fastener 5X approaches and faces. In such a case, it is also possible to prevent the base member 2, that is, the high voltage device 1, from being removed from the mounting surface P. For example, the flange 6a may not be formed on the lower unit 6, and the upper unit 7 may be configured so that the lower end of the upper unit 7 approaches and faces the nut 8b or the bolt 8c on the front side.

[0036] Furthermore, in the present 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. When the base member 2 is composed of a first member 2a and a second member 2b, by combining the second member 2b having a different shape depending on the vehicle model with the first member 2a, the position of the fixing point of the base member 2 can be flexibly set. The first member 2a and the second member 2b have an overlapping range that overlaps each other in a direction perpendicular to the mounting surface P. Moreover, in the overlapping range, the second member 2b is located on the opposite side of the mounting surface P, that is, on the upper side, relative to the first member 2a. Furthermore, as Figure 4 As shown, the second member 2b is fastened to the first member 2a by a nut 2d from the mounting surface P side, that is, 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.

[0037] In more detail, two welding bolts 2c are provided in the overlapping range of the second component 2b, protruding toward the first component 2a, that is, toward the bottom. These welding bolts 2c are inserted through insertion holes (not shown) formed on the first component 2a, and the nuts 2d are fastened to the welding bolts 2c. Therefore, in order to separate the first component 2a and the second component 2b, it is necessary to contact the nuts 2d from the back of the base component 2. When the base component 2 is fixed to the mounting surface P, it is impossible to contact the nuts 2d, so in order to contact the nuts 2d, it is necessary to remove the base component 2 from the mounting surface P.

[0038] However, as described above, since the nut 8b and the bolt 8c on the front side are close to and face the eaves 6a, the base member 2 cannot be removed from the mounting surface P unless the lower unit 6 is removed from the bottom plate. That is, the user is also prevented from separating the first member 2a from the second member 2b. As a result, it is also impossible to separate the first member 2a from the second member 2b and remove the accessible nut 8b on the rear side, so that the first member 2a is forcibly rotated around the welding bolt 8a on the front side and contacts the fastener 5X. Since the first member 2a and the second member 2b cannot be separated, it is impossible to contact the fastener 5X.

[0039] Next, refer to Figure 5 to Figure 6B The high voltage device vehicle-mounted structure of the second embodiment will be described. In the high voltage device 1 of the first embodiment, the fastener 5X to be prevented from contact is fastened to the box portion 4a of the cover member 4 (see Figure 3 and Figure 4 ). In the high voltage device 1X of the present embodiment, the fastener 5X to be prevented from contact is fastened to the cantilever tab 4b having a flexural structure (flexible structure) of the cover member 4. With this structure, the overall shape of the cover member 4 is slightly different from that of the first embodiment, but the other structures are the same as those of the first embodiment. Although the relationship with the lower unit 6 as an internal component is not shown in the figure, the relationship is the same as that of the first embodiment. In the following, only the structures different from the first embodiment are described, and the same symbols are marked on the same parts and equivalent structures and their descriptions are omitted.

[0040] The box portion 4a of the first embodiment is difficult to bend due to the box shape. Therefore, when the fastener 5X of the box portion 4a is fastened, a gap may be formed between the inner surface of the box portion 4a and the base member 2. In particular, this possibility increases when the fastener 5X is fastened after the fasteners 5 other than the fastener 5X are fastened. When the fastener 5X is fastened with a gap formed between the inner surface of the box portion 4a and the base member 2, the fastening of the fastener 5X may become loose due to vibration accompanying the running of the vehicle.

[0041] In this embodiment, the cover member 4 is formed of an aluminum alloy, but aluminum alloy can also produce creep. Even if the box portion 4a produces creep due to the fastening force of the fastening portion of the fastener 5X acting on the box portion 4a, the fastener 5X becomes more likely to loosen. Therefore, in this embodiment, the fastening portion of the fastener 5X is formed as a cantilever piece 4b having a flexure structure, and the cantilever piece 4b is reliably and closely attached to the base member 2 by the fastening force of the fastener 5X. As a result, the loosening of the fastener 5X can be reliably prevented.

[0042] Reference Fig. 6A and Figure 6BThe bending structure of the cantilever piece 4b is described below. Fig. 6A As shown, an internal thread hole 2f for fastening the fastener 5X is formed on the base member 2. On the other hand, a bolt hole 4c for inserting the fastener 5X is formed on the cantilever piece 4b corresponding to the internal thread hole 2f. The cantilever piece 4b has an L-shaped extension from the main body of the cover member 4. The bolt hole 4c is formed near its free end.

[0043] like Figure 6B As shown, when the fastener 5X is fastened in the internal threaded hole 2f, the cantilever piece 4b is bent by the fastening force of the fastener 5X, so that the cantilever piece 4b is closely attached to the base member 2. As a result, the fastening force effectively acts between the fastener 5X and the base member 2, so that the cover member 4 is firmly fixed to the base member 2. Such a firm fastening can effectively resist vibration and prevent the fastening of the fastener 5X from loosening.

[0044] Fig. 7A and Figure 7B FIG. 2 shows a modification of the second embodiment, that is, a modification of the flexure structure. In the second embodiment described above, the cantilever piece 4b is formed as a flexure structure, but in this modification, the bridge portion 4d is formed as a flexure structure. Fig. 7A As shown, the bridge portion 4d has a grid-like shape extending from the main body of the cover member 4, and the bolt hole 4c is formed in the center thereof. Both ends of the bridge portion 4d are integrally connected to the main body of the cover member 4.

[0045] like Figure 7B As shown, when the fastener 5X is fastened in the internal threaded hole 2f, the fastening force of the fastener 5X causes the bridge portion 4d to bend and the bridge portion 4d to fit closely with the base member 2. As a result, the fastening force effectively acts between the fastener 5X and the base member 2, and the cover member 4 is firmly fixed to the base member 2. Such a firm fastening can effectively resist vibration and prevent the fastening of the fastener 5X from loosening.

[0046] In the second embodiment and its modified example, the cantilever piece 4b and the bridge 4d are shown as specific examples of the flexure structure. However, the flexure structure is not limited to the cantilever piece 4b and the bridge 4d as long as it is a structure that allows the cover member 4 and the base member 2 to be closely attached without a gap by partially flexing the cover member 4 at the fastening portion of the fastener 5X. The local flexure of the cover member 4 caused by the flexure structure may be elastic deformation or plastic deformation.

[0047] Next, refer to Figure 8The vehicle-mounted structure of the high-voltage device of the third embodiment is described. In the above-mentioned second embodiment and its modified example, the flexure structure is provided on the cover member 4. In the present embodiment, the flexure structure is provided on the base member 2. More specifically, a fixed lead plate 2g is erected vertically from the base member 2 and the mounting surface P, and by bending the fixed lead plate 2g in the same manner as in the second embodiment and its modified example, the cover member 4 and the base member 2 are closely fitted without a gap. In addition, although the relationship with the lower unit 6 as an internal component is not shown, the relationship is the same as that of the first embodiment. In the following, only the structure different from the first embodiment is described, and the same parts and equivalent structures are marked with the same symbols and their descriptions are omitted.

[0048] In the high voltage device 1Y of this embodiment, the base member 2 is also formed by fixing the base shell 2y made of aluminum alloy to the base plate 2x of the steel stamping part. The high voltage component 3 is arranged on the base shell 2y of the base member 2. As in the above embodiment, the high voltage harness 9 is electrically connected to the high voltage component 3. In addition, the base plate 2x and the base shell 2y may be integrally formed of, for example, aluminum alloy.

[0049] Similar to the above embodiment, the base plate 2x is provided with mounting holes 2e, and similar to the above embodiment, the base plate 2x is fixed to the mounting surface P by means of welding bolts 8a, nuts 8b, and bolts 8c. Four welding bolts 2h are provided vertically from the base plate 2x. Corresponding to the welding bolts 2h, insertion holes 2i are formed on the bottom flange of the base housing 2y, through which the welding bolts 2h are respectively inserted. Nuts 2j are fastened to the welding bolts 2h inserted in the insertion holes 2i, so that the base housing 2y is fixed to the base plate 2x. The fixing lead plate 2g is provided vertically from the base plate 2x to the mounting surface P.

[0050] In this embodiment, the cover member 4 made of aluminum alloy for protecting the high voltage component 3 is also fixed to the base member 2 (base plate 2x or base housing 2y) by five fasteners 5 (including fasteners 5X). The fasteners 5 in this embodiment are also hexagon socket internal bolts to prevent malicious damage. As in the above embodiment, the fastening direction of the fasteners 5X to the base member 2 (base plate 2x) is set to be parallel to the mounting surface P. The insertion hole 2k for the fastener 5X to be inserted is formed near the free end of the fixing lead plate 2g of the above base member 2.

[0051] The fastening hole 4e for fastening the fastener 5X is formed in the cover member 4. The fastener 5X of this embodiment does not fix the cover member 4 to the base case 2y, but fixes the cover member 4 to the fixing lead plate 2g of the base plate 2x through the fastening hole 4e. In other words, the cover member 4 is fixed to the base member 2 (base plate 2x) at the fixing lead plate 2g by the fastener 5X whose fastening direction is parallel to the mounting surface P.

[0052] In the structure of the present embodiment, since the fastener 5X having a fastening direction parallel to the mounting surface P is close to and faces the internal component (lower unit 6), it is also possible to prevent the fastener 5X from being removed. As a result, it is possible to prevent the user from touching the high voltage component 3 built into the high voltage device 1Y. That is, the user can be protected from the influence of high voltage. In the present embodiment, one of the fasteners 5 having a fastening direction perpendicular to the mounting surface P ( Figure 8 The fasteners 5 closest to the fastening position of the fasteners 5X are also close to and face the eaves 6a, that is, the lower unit 6 as the interior component in their fastening direction. Therefore, the fasteners 5 are also difficult to remove after the lower unit 6 is fixed to the floor. As a result, it is possible to further prevent the user from removing the cover member 4 from the base member 2 (base housing 2y).

[0053] In addition, two of the fasteners that fix the base member 2 (base plate 2x) to the installation surface P, specifically, the nut 8b and the bolt 8c fastened in the installation hole 2e on the front side, are also close to and face the eaves 6a of the lower unit 6 as the interior component in their fastening direction. Therefore, the nut 8b and the bolt 8c on the front side are also difficult to remove after the lower unit 6 is fixed to the floor. As a result, the user is also prevented from removing the base member 2 from the installation surface P.

[0054] According to the above-mentioned embodiment and modification, the cover member 4 is fixed to the base member 2 by three or more fasteners 5. The fastening direction of at least one fastener 5X of the fasteners 5 to the base member 2 is set to be parallel to the mounting surface P, and the at least one fastener 5X is close to and faces the internal component (lower unit 6) in its fastening direction. In addition, the fastening direction of all or part of the remaining fasteners 5 to the base member 2 is set to be perpendicular to the mounting surface P. Since the fastener 5X is close to and faces the internal component (lower unit 6), the fastener 5X can be prevented from being removed. As a result, it is possible to prevent the user from contacting the high-voltage component 3 built into the high-voltage device 1, 1X. That is, the user can be protected from the influence of high voltage.

[0055] According to the second embodiment and its modified example, the cover member 4 has a flexure structure (cantilever piece 4b or bridge portion 4d, etc.) at the fastening portion of the fastener 5X. Therefore, at the fastening portion of the fastener 5X, the cover member 4 and the base member 2 can be closely attached by the fastening force of the fastener 5X. As a result, loosening of the fastener 5X can be prevented.

[0056] According to the third embodiment, the fixing lead plate 2g is erected from the base member 2 perpendicularly to the mounting surface P, and the cover member 4 is fixed to the base member 2 at the fixing lead plate 2g by the fastener 5X whose fastening direction is parallel to the mounting surface P. In this case, since the fixing lead plate 2g is flexed, the base member 2 (fixing lead plate 2g) and the cover member 4 can be closely attached by the fastening force of the fastener 5X. As a result, the fastening of the fastener 5X can be prevented from being loosened.

[0057] In addition, according to the above-mentioned embodiment and the modified example, 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 above-mentioned two or more fasteners (nuts 8b and bolts 8c) to the mounting surface P is set to be perpendicular to the mounting surface P. At least one of these fasteners (nuts 8b and bolts 8c) is close to and faces the internal component (the flange 6a of the lower unit 6) in its fastening direction. Since at least one fastener is close to and faces the internal component, the removal of the at least one fastener is prevented. As a result, it is possible to prevent the user from removing the base member 2, that is, the high voltage device 1, 1X from the mounting surface P. If the high voltage device 1, 1X is removed from the mounting surface P, the fastener 5X can be touched. However, by preventing the high voltage device 1, 1X from being removed from the mounting surface P, it is possible to further prevent the user from touching the high voltage component 3 built into the high voltage device 1, 1X. In addition, the internal component that at least one of the fasteners (nuts 8 b and bolts 8 c ) that fix the base member 2 to the mounting surface P approaches and faces and the internal component that the fastener 5X approaches and faces may be the same or different.

[0058] Here, further according to the above-mentioned embodiment and the modified example, the base member 2 is composed of the first member 2a and the second member 2b that are fastened to each other. The first member 2a and the second member 2b have an overlapping range that overlaps 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 relative to the first member 2a. The second member 2b is fastened to the first member 2a from the mounting surface P side by the fastener (nut 2d) in the overlapping range. Since the fastener (nut 2d) is located between the base member 2 and the mounting surface P, as described above, if the user is prevented from removing the base member 2, that is, the high voltage device 1, 1X from the mounting surface P, the user can be prevented from contacting the fastener (nut 2d). Therefore, it is also possible to prevent the base member 2 from being separated into the first member 2a and the second member 2b, and it is possible to reliably prevent the user from contacting the fastener 5X. In addition, if the base member 2 is composed of the first member 2a and the second member 2b, the position of the fixing point of the base member 2 can be flexibly set by combining the second member 2b having a different shape with the first member 2a.

[0059] In addition, the high voltage devices 1 and 1X in the above-mentioned embodiments and modified examples are junction boxes, but are not limited to this. The high voltage device of the present invention can be any device accompanied by high voltage installed in a vehicle compartment (including a luggage compartment). For example, a converter unit, an inverter unit, etc. can also be a high voltage device. In addition, as mentioned above, the high voltage here refers to a voltage of 60 volts or more. The vehicle-mounted high voltage device requires a dedicated grounding circuit rather than a main body grounding, and its wiring harness is distinguished from other wiring in orange. In addition, the mounting surface P of the high voltage device 1 and 1X in the embodiment is a horizontal plane, but it can also be a vertical surface or an inclined surface such as the surface of the side panel of the vehicle compartment (including the luggage compartment).

[0060] In the above-mentioned embodiment and the modified example, the number of fasteners 5X having a fastening direction parallel to the mounting surface P is one. However, the fastening directions of two or more fasteners may be parallel to the mounting surface P. Moreover, at least one of the two or more fasteners having a fastening direction parallel to the mounting surface P may be close to and face the interior component in its fastening direction. In addition, in the above-mentioned embodiment, all fasteners 5 other than the fasteners 5X having a fastening direction parallel to the mounting surface P are fastened perpendicularly to the mounting surface P. However, only a part of the fasteners 5 other than the fasteners 5X having a fastening direction parallel to the mounting surface P may be fastened perpendicularly to the mounting surface P.

[0061] In the above-mentioned embodiment and modification, the interior component arranged close to the fastener 5X whose fastening direction is parallel to the mounting surface P is the lower unit 6 of the rear seat. However, the interior component arranged close to the fastener 5X is not limited thereto, and may be, for example, a center console. In such a case, the high voltage device is arranged, for example, in the footwell of the rear seat of the center console.

[0062] In the above-mentioned embodiment and modification, the base member 2 is composed of the first member 2a and the second member 2b which are fastened to each other. However, the base member 2 may be formed as a single member. In addition, in the above-mentioned embodiment and modification, the cover member 4 is made of an aluminum alloy, but it may be a steel stamping product. The formation of the above-mentioned cantilever piece 4b and the bridge part 4d of the cover member 4 may be easier by stamping. In addition, the cantilever piece 4b and the bridge part 4d formed by stamping may be more effectively flexed.

[0063] Explanation of symbols

[0064] 1. 1X, 1Y: High voltage device

[0065] 2: Base parts

[0066] 2a: First component

[0067] 2b: Second component

[0068] 2d: Nut (fastener for the first component 2a and the second component 2b)

[0069] 2g: Fixed guide plate

[0070] 3: High voltage components

[0071] 4: Cover parts

[0072] 4b: Cantilever piece (flexure structure)

[0073] 4d: Bridge (flexure structure)

[0074] 5, 5X: Fastener (cover part 4 to base part 2)

[0075] 6: Lower unit (interior parts) (rear seat)

[0076] 6a: Eaves (of lower unit 6)

[0077] 8b: Nut (fastener for fastening the base member 2 to the mounting surface P)

[0078] 8c: Bolt (fastener for fastening the base member 2 to the mounting surface P)

[0079] 9: High voltage wiring harness

[0080] P: Mounting surface (of high voltage device 1, 1X, 1Y)

Claims

1. A high voltage device vehicle-mounted structure, comprising: A high voltage device comprising: a base member fixed to a mounting surface in a vehicle compartment, a high voltage component provided on the base member, and a cover member fixed to the base member and covering the high voltage component; an interior component, which is adjacent to the high voltage device and fixed in the vehicle compartment, 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 component is set to be parallel to the mounting surface, and the at least one fastener approaches and faces the interior component in the fastening direction. The fastening direction of all or part of the remaining fasteners to the base member is set to be perpendicular to the mounting surface.

2. The high voltage device vehicle-mounted structure according to claim 1, wherein: The cover member has a flexure structure at a fastening portion of the fastener parallel to the mounting surface in the fastening direction.

3. The high voltage device vehicle-mounted structure according to claim 1, wherein: A fixing guide plate is vertically provided from the base member and perpendicular to the mounting surface. The cover member is fixed to the base member at the fixing tab by the fastener whose fastening direction is parallel to the mounting surface.

4. The high voltage device vehicle-mounted structure according to any one of claims 1 to 3, wherein: The base component is fixed to the mounting surface by two or more fasteners, and the fastening direction of the two or more fasteners to the mounting surface is set to be perpendicular to the mounting surface. At least one of the two or more fasteners is close to and faces the interior component or other interior components disposed in the vehicle compartment in the fastening direction thereof.

5. The high voltage device vehicle-mounted structure according to claim 4, wherein: The base component is composed of a first component and a second component that are fastened to each other. The first component and the second component have an overlapping range that overlaps each other in a direction perpendicular to the mounting surface, Within the overlapping range, the second component is located on the opposite side of the mounting surface relative to the first component, The second component is fastened to the first component from the mounting surface side within the overlapping range by a fastener.

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