Member support structure

Abstract

To make noise transmitted to a case flow to a vehicle body side member.SOLUTION: The member support structure supports a metal member case for housing an electronic component on a metal vehicle body side member. The vibration damping device includes a deformable mount resin 40 having a fluid chamber whose volume changes as a liquid flows in and out, a metal upper base 54 disposed at an upper end of the mount resin 40 and configured to be fastened to a member case, a lower metal case 44 supporting the mount resin 40 from below, and a metal lower base 48 configured to fasten the lower metal case 44 to a vehicle body-side member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a member support structure for supporting a metal member case that houses electronic components on a metal vehicle body member. [Background technology]

[0002] Fuel cell vehicles are known and run on electricity generated by an onboard fuel cell. A large amount of electricity is required for the vehicle to run, and fuel cell vehicles are equipped with a fuel cell stack, which is made up of multiple stacked fuel cells housed in a fuel cell case.

[0003] A vehicle requires a power source of a predetermined voltage, and a DC-DC converter is installed in the fuel cell case together with the fuel cell stack. The DC-DC converter includes multiple switching elements, which generate electromagnetic noise when switched. The vehicle runs by driving a motor with power from the fuel cell. In this case, the power from the fuel cell is converted to a predetermined output by an inverter and supplied to the motor. The inverter includes multiple switching elements, which generate electromagnetic noise when switched.

[0004] Patent Document 1 discloses that the fuel cell case is made of an electromagnetic wave attenuation material that attenuates electromagnetic waves.

[0005] Furthermore, power conversion components such as the fuel cell stack and DC-DC converter are vulnerable to shocks, and fuel cell cases are often supported on the vehicle body by rubber mounts to prevent vibration. In particular, hydraulic mounts are used to further suppress shocks and acceleration during driving. Hydraulic mounts are disclosed in, for example, Patent Document 2. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication WO2007 / 046490 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-205418 Summary of the Invention [Problem to be solved by the invention]

[0007] Here, in a component case that houses an electromagnetic noise source inside, such as a fuel cell case, a structure that can effectively prevent leakage of electromagnetic noise with as simple a configuration as possible is desired. [Means for solving the problem]

[0008] The component support structure of the present disclosure is a component support structure for supporting a metal component case that houses electronic components on a metal vehicle body component, and includes a deformable mounting resin having a fluid chamber whose volume changes as liquid flows in and out, a metal upper base that is positioned at the upper end of the mounting resin and fastens to the component case, a lower metal case that supports the mounting resin from below, and a metal lower base for fastening the lower metal case to the vehicle body component, and the upper base and the lower metal case are connected by a deformable metal connecting member, or the mounting resin is made conductive to electrically connect the component case and the vehicle body component.

[0009] The metal connecting member may be a plate-like member having a corrugated cross section and being thereby elastic.

[0010] The metal connection member may be a plate-like member having a mesh structure and being stretchable.

[0011] The mounting resin may be electrically conductive. [Effects of the Invention]

[0012] According to the component support structure of the present disclosure, the component case and the vehicle body component are electrically connected, so that noise transmitted to the component case can be channeled to the vehicle body component. [Brief explanation of the drawings]

[0013] [Figure 1] 1A and 1B are diagrams showing the arrangement of conductive mounts on a fuel cell stack case and a control device case mounted on a fuel cell vehicle. [Figure 2] FIG. 2 is a diagram showing the configuration of a comparative example in which a non-conductive mount is used instead of the conductive mount in FIG. 1. [Figure 3] 1A and 1B are diagrams illustrating a configuration of a conductive mount according to an embodiment. [Figure 4] 10A and 10B are diagrams showing the configuration of another embodiment of a conductive mount. [Figure 5] 10A and 10B are diagrams showing the configuration of still another embodiment of the conductive mount; [Figure 6] 10A and 10B are diagrams showing the configuration of still another embodiment of the conductive mount; DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the following embodiments do not limit the present disclosure, and configurations formed by selectively combining multiple examples are also included in the present disclosure.

[0015] "Configuration using conductive mount" 1 is a diagram showing the arrangement of a fuel cell stack case 100 mounted on a fuel cell vehicle and a conductive mount 400 on a controller case 200. The fuel cell stack case 100 and controller case 200 are collectively referred to as a component case.

[0016] The fuel cell stack case 100 has a two-tiered structure. The lower tier is a lower case 12 that houses the fuel cell stack 10, and the upper tier is an upper case 16 that houses the DC-DC converter 14. In this example, both the lower case 12 and the upper case 16 are hollow rectangular parallelepipeds, with the lower case 12 being slightly larger than the upper case 16.

[0017] The lower case 12 accommodates a fuel cell stack 10. The fuel cell stack 10 has a pair of electrodes 10a, 10b, from which a cable 20 extends. The fuel cell stack 10 is composed of a predetermined number of fuel cells, which are connected in series and parallel, and whose output is extracted from the electrodes 10a, 10b. A DC-DC converter 14 is disposed within the upper case 16. The DC-DC converter 14 includes multiple switching elements 14a for power conversion. The switching elements 14a are electronic components. A cooler 22 is connected to the switching elements 14a of the DC-DC converter 14. The cooler 22 is, for example, a heat exchanger through which a refrigerant circulates, and is thermally connected to the switching elements 14a. The DC-DC converter 14 converts the output power obtained at the pair of electrodes 10a, 10b into a desired voltage output.

[0018] The control device case 200 has a rectangular parallelepiped shape and houses an inverter 30 therein. The inverter 30 includes a plurality of switching elements 30a for power conversion. The control device case 200 and the internal inverter 30 are connected by a capacitance 38 such as a smoothing capacitor and stray capacitance. The inverter 30 converts the DC output from the DC-DC converter 14 into AC power corresponding to the target output of the motor and supplies it to the motor.

[0019] The switching element 30a of the inverter 30 and the output of the DC-DC converter 14 are connected to the inverter 30 by a cable 34. The cable 34 includes a PN line of a high-voltage cable covered with a shielded wire 36. The shielded wire 36 is electrically connected to the fuel cell stack case 100 and the control device case 200.

[0020] The fuel cell stack case 100 and the control device case 200 are supported on a vehicle body side member 300 by a conductive mount 400. As will be described later, this conductive mount 400 absorbs vibrations and shocks, but in this example it is conductive as a whole and electrically connects the fuel cell stack case 100 and the control device case 200 to the vehicle body side member 300. The vehicle body side member 300 is the vehicle body, a unit base, or the like.

[0021] "Configuration using non-conductive mount" Here, a case where a non-conductive mount 500 is used instead of the conductive mount 400 will be described.

[0022] Fuel cell vehicles have a system configuration that has multiple power conversion components, such as DC-DC converters and inverters, connected by high-voltage cables. Furthermore, to supply power to the various components, the power must be converted to various voltages and frequencies. Therefore, compared to hybrid electric vehicles (HEVs) and battery electric vehicles (BEVs), the system configuration is more complex.

[0023] Furthermore, in fuel cell vehicles, the trend towards smaller size, higher performance and lower costs has led to higher voltages and switching speeds, which has resulted in higher voltages and currents at noise sources, making noise countermeasures important.

[0024] Fuel cell stack cases and other power conversion components are vulnerable to shocks, and certain components are supported by mounts to reduce external acceleration. Furthermore, in special-purpose vehicles, etc., hydraulic mounts are used to further reduce shocks and acceleration during driving.

[0025] Almost all mounts used are made of rubber, and hydromounts use rubber and an internal viscous fluid to protect against impacts, but mounts are essentially insulating components, which also provide insulation between the fuel cell components and unit and the support frame and vehicle body.

[0026] In other words, two types of action - spring characteristics and damping characteristics - are essential to suppressing shock and vibration. Rubber materials (rubber + viscous fluid in the case of hydromounts) can achieve this at low cost while also satisfying other design requirements (environmental resistance, fatigue characteristics, formability, etc.). Because both rubber materials and viscous fluids are insulating materials, when a part is supported by a mount, there is insulation between the part and the supporting member.

[0027] Furthermore, if a rubber mount were to be completely covered with a metal case, the rigidity of the high-rigidity metal case would dominate the space between the part and the support member, rather than the rigidity of the rubber, and the mount would lose its functionality. Therefore, completely covering the mount with a metal case would be fundamentally inconsistent with the functionality of the mount. For this reason, there is no need to expect noise transmission performance from the mount.

[0028] Fig. 2 is a diagram showing the configuration of a comparative example in which a non-conductive mount 500 made of, for example, rubber is used instead of the conductive mount 400 in Fig. 1. The configuration in Fig. 2 is the same as that in Fig. 1 except that the non-conductive mount 500 is used instead of the conductive mount 400.

[0029] In Figure 2, the flow of the transmitted noise current is indicated by the dotted arrows. The control device case 200 contains a switching element 30a, which is a power conversion component used to drive a high-power motor such as an inverter. Motors such as electric automatic differential motors are usually PWM controlled, so the switching of the switching element 30a generates a relatively large noise current.

[0030] The noise current generated in this switching element 30a passes through the capacitor 38 and the shield wire 36 of the high-voltage cable, then passes from the element cooler 22 of the fuel cell stack case 100 to the switching element 22a of the DC-DC converter 14, and returns through the cable 34 (the PN line of the high-voltage cable). The reason for this path is that it is an easy path for the noise current to pass through, i.e., it has a relatively low impedance. For example, even if noise that has reached the fuel cell stack case 100 attempts to follow another path, the non-conductive mount 500 is an insulating material and has a much higher impedance than a path through the interior of the fuel cell stack case 100. Therefore, the noise current cannot return through the path that passes through the vehicle body member 300. Therefore, the noise current will flow through components inside the control device case 200, which may prevent those components from operating normally.

[0031] Furthermore, when such an abnormality occurs, it incurs significant costs such as additional component costs, space, and development man-hours, such as the need for ground wires and EMC (ElectroMagnetic Compatibility) countermeasure components, resulting in disadvantages such as higher costs, reduced space requirements, and longer development lead times.

[0032] 1 uses a conductive mount 400. Therefore, the noise current that reaches the fuel cell stack case 100 via the shielded wire 36 can be passed to the vehicle body side member 300 via the conductive mount 400.

[0033] "Conductive Mount Configuration" 3 is a diagram showing the configuration of a conductive mount 400 according to an embodiment. The internal cavity of a substantially hemispherical mount resin 40 with a closed top serves as an upper fluid chamber A. The bottom of the mount resin 40 is closed by an orifice body 42.

[0034] The outer shape of the resin mount 40 is a cone with the upper half tapering downward, and the diameter of the lower half decreasing from the midpoint downward until it reaches a predetermined diameter. The lower half is held from below by the lower metal case 44. The lower metal case 44 has a funnel-like shape that widens upward. The outer peripheral surface of the lower half of the resin mount 40 is received and supported by the inner peripheral surface of the lower metal case 44.

[0035] The lower end of the lower metal case 44 extends outward by a predetermined distance, and the periphery thereof extends downward and then extends inward to terminate, so that the lower end forms a hollow flange portion 44a.

[0036] The orifice body 42 has a disk-like shape with its upper portion in contact with the inner peripheral wall of the mount resin 40, and its lower portion forms a peripheral edge portion 46a that extends outward beyond the bottom surface of the mount resin 40. In other words, the upper surface of the circular plate-like orifice body 42 forms the bottom of the upper fluid chamber A. Furthermore, near the center of the orifice body 42, a passage 42b is formed that penetrates from the top surface to the bottom surface of the orifice body 42. In this example, the passage 42b is bent in a crank shape.

[0037] Additionally, a circular diaphragm 46 that bulges downward at the center is disposed below the orifice body 42 so as to cover the lower surface of the orifice body 42. Therefore, the space between the lower surface of the orifice body 42 and the diaphragm 46 forms a lower fluid chamber B. Fluid can move between an upper fluid chamber A above the orifice body 42 and a lower fluid chamber B below the orifice body 42 via the passage 42b of the orifice body 42. Therefore, resistance to the fluid as it passes through the passage 42b causes a certain pressure loss in the movement of the fluid.

[0038] A hat-shaped lower base 48 that is open at the top and gradually tapers downward is disposed below the diaphragm 46. The upper end of the lower base 48 forms a flange portion 48a that widens outward.

[0039] The flange portion 42a of the orifice body 42, the peripheral edge portion 46a of the diaphragm 46, and the flange portion 48a of the lower pedestal 48 are housed in the hollow flange portion 44a of the lower metal case 44. Therefore, by applying a clamping force in the vertical direction to the hollow flange portion 44a of the lower metal case 44 and crimping and fixing it, the flange portion 42a of the internal orifice body 42, the peripheral edge portion 46a of the diaphragm 46, and the flange portion 48a of the lower pedestal 48 can be clamped and fixed. All of these sandwiched members are made of metal and are electrically connected here.

[0040] A bolt hole is provided in the center of the bottom of lower pedestal 48, and a mounting bolt 50 is placed in this bolt hole. The head of mounting bolt 50 is located above lower pedestal 48, and the shaft passes through the bolt hole and extends downward. Therefore, the conductive mount can be fixed to vehicle body member 300 by clamping the shaft with the vehicle body member 300 and tightening it with a nut, or by screwing it into a screw hole provided in vehicle body member 300.

[0041] The upper end of the resin mount 40 forms a horizontal, circular, flat surface. An upper base 54 is placed on this circular, flat surface. The upper base 54 has a lower portion 54a consisting of a circular bottom portion placed on the circular upper surface and a conical slope portion tapering upward from the bottom, a disk-shaped upper portion 54b that closes the upper opening of the lower portion 54a and extends outward, and a hook portion 54c formed by bending the tip of the upper portion 54b downward into a rounded shape. The hook portion 54c extends inward and then terminates upward.

[0042] An upper cover 56 having a corrugated cross section is provided between the hook portion 54c of the upper base 54 and the outer end of the lower metal case 44. The upper cover 56 is a conductive metal connecting member. The upper cover 56 is generally conical and has spring properties along its slope. Accordingly, the upper cover 56 has a hook at its upper end, which engages with the hook portion 54c of the upper base 54, and a hook at its lower end, which engages with the upper outer end of the lower metal case 44, thereby securing the upper cover 56 in place. In particular, in this embodiment, the engaged hooks are connected by electrical crimping. Therefore, the connection is achieved with low electrical resistance. Furthermore, as long as the connection can be achieved with low electrical resistance, electrical conduction is not necessarily required; bolting, spot welding, or other methods may be used for connection.

[0043] The upper cover 56 does not necessarily have to be conical, and may be divided into multiple parts in the circumferential direction.

[0044] A bolt hole is provided in the center of upper pedestal 54, and a mounting bolt 58 is placed in this hole. Mounting bolt 58 has its head located below upper pedestal 54 and its shaft extending upward through the bolt hole. Therefore, by clamping the component case to be mounted on the vehicle around the shaft and tightening the nut, conductive mount 400 can be fixed to the component case.

[0045] The mounting bolts 50, 58 may be fixed to the lower base 48 and upper base 54, respectively. In this case, the shafts of the mounting bolts 50, 58 can be inserted into holes in the mating member and then tightened with nuts on the opposite side of the mating member. Instead of bolting, the bolts can also be fastened to the mating member by other means such as welding.

[0046] In this embodiment, the upper base 54, top cover 56, lower metal case 44, and lower base 48 are made of metal. Typically, aluminum or steel plate is used, but other metals can also be used. Therefore, these components are conductive and can pass electric current. The mounting bolts 50, 58, orifice body 42, and diaphragm 46 may also be made of metal. In this example, the mount resin 40 is made of resin and an insulating material. Even if the mount resin 40 is made of an insulating material, the components surrounding it are made of a conductive material, so the conductive mount 400 electrically connects the upper and lower components.

[0047] Such a conductive mount 400 is disposed, for example, between the fuel cell stack case 100 and the vehicle body member 300, or between the control device case 200 and the vehicle body member 300. When the load on the conductive mount 400 changes, the mount resin 40 deforms, causing the fluid to move through the passage of the orifice body 42. As a result, the conductive mount 400 deforms, absorbing part of the energy and damping the acceleration, thereby mitigating vibrations and impacts on the fuel cell stack case 100 and the control device case 200.

[0048] In this embodiment, a conductive mount 400 is used. The conductive mount 400 is entirely conductive, that is, has an ultra-low impedance.

[0049] As described above, the conductive mount 400 is made up of all metal components, including the upper base 54, upper cover 56, lower metal case 44, and lower base 48, which are located between the upper and lower mounting bolts 50, 58. The upper cover 56 is fixed to the upper base 54 and lower metal case 44 with a high load (surface pressure) by crimping or bolt fastening, resulting in a structure with extremely low electrical impedance, including the contact points.

[0050] The top cover 56 is a thin plate with a corrugated shape around the mount circumference, and is designed to have a spring constant (six degrees of freedom including length, width, height, and torsional moment for each axis) that is 1 / 10 or less of the rigidity of the mount resin 40. Therefore, it has a rigidity and structure that does not inhibit the displacement and damping effect of the mount resin 40, nor the simultaneous movement of the viscous fluid.

[0051] Although the top cover 56 is a thin plate in this embodiment, it may have a certain degree of thickness. This is because electrical resistance is determined by the product of thickness and cross-sectional area, and this contributes to lowering the impedance of the entire conductive mount 400. Therefore, it is desirable to ensure a thickness that ensures conductivity that is 1 / 10 or less of the impedance of the entire noise current path. This ensures that most of the noise current flows through the path that passes through the conductive mount 400. It is desirable that the impedance of the conductive mount 400 be 1 / 10 or less of the impedance outside the mount path in the MHz band.

[0052] Furthermore, the corrugated shape of the top cover 56 should be such that the stress and strain caused by vertical and horizontal displacement of the mount resin 40 is below the fatigue limit. This prevents the mount resin 40 from absorbing vibration and shock and from adversely affecting durability. Note that FEM analysis is usually used to calculate this stress and strain.

[0053] The lower metal case 44 is made of a highly rigid metal and supports the lower periphery of the mount resin 40 from below. By using a highly rigid material, it is possible to prevent the mount resin 40 from undergoing large deformation.

[0054] The conductive mount 400 is designed to have a shape and material that satisfies the impedance and rigidity specifications as described above.

[0055] Other Embodiments 4 is a diagram showing the configuration of another embodiment of a conductive mount 400. In this embodiment, a metal mesh 60 with a mesh structure is used as the metal connecting member instead of the top cover 56. This metal mesh 60 is conical and covers the top of the mount resin 40. As long as sufficient conductivity can be ensured, it does not necessarily have to cover the entire surface, and may be divided into multiple pieces spaced apart in the circumferential direction.

[0056] The upper and lower ends of the metal mesh 60 are fixed to the outer end of the upper base 54 and the upper end of the lower metal case 44 by fixing members 62. This fixing can be performed by sandwiching the ends of the metal mesh 60 between the fixing member 62 and a mating member and welding them together. The fixing member 62 can be made of a metal plate, and may be annular or divided into multiple pieces.

[0057] In this embodiment, the metal mesh 60 does not have hooks at its upper and lower ends, but is fixed by fixing members 62. Therefore, the upper base 54 does not have hooks 54c. In this embodiment, the fixing portions at both the upper and lower ends of the metal mesh 60 may have the same configuration as in the embodiment of FIG. 3. In addition, in the embodiment of FIG. 3, the fixing portions at both the upper and lower ends of the top cover 56 may have the configuration of FIG. 4.

[0058] According to the embodiment shown in FIG. 4, the configuration can be relatively simplified, further reducing the cost of the entire device. In other words, the manufacturing process, such as pressing, required for the top cover 56 shown in FIG. 3 is unnecessary, and the conductive performance of the conductive mount 400 can be ensured. Note that the impedance of the metal mesh 60 is often higher than that of the top cover 56. Therefore, its noise suppression performance tends to be somewhat inferior. Therefore, it is recommended for use in systems that are less prone to errors, components, and destinations with low regulatory criteria.

[0059] "Further Other Embodiments" 5 is a diagram showing the configuration of yet another embodiment of the conductive mount 400. In this embodiment, the upper cover 56 or metal mesh 60 is not employed, and no member is provided to cover the periphery of the upper half of the mount resin 40. In other words, the member connecting the upper base 54 and the lower metal case 44 is omitted.

[0060] In this embodiment, the mount resin 40 is made of a conductive material such as conductive rubber. Therefore, the upper base 54 and the lower metal case 44 are electrically connected via the mount resin 40. Therefore, similar to the embodiment in FIG. 3, noise can be conducted to the vehicle body side member 300 via the conductive mount 400, and the same effect as the embodiment in FIG. 3 can be obtained.

[0061] Here, natural rubber or synthetic rubber is used for the mount resin 40. The electrical resistance value (impedance) of these materials is usually 10 10 That's all. In this further embodiment, these rubbers are blended with a conductive material such as carbon to provide conductivity. In the case of carbon, the specific resistance is typically reduced to single or double digits by blending 30% or more carbon by weight. Therefore, by relatively increasing the cross-sectional area of ​​the mount resin 40, the resistance value of the component can be reduced to 1 Ω or less. As mentioned above, there is no problem if the resistance value of the conductive mount 400 is sufficiently low, but that resistance value only needs to match the system requirements. Therefore, the resistance value of the mount resin 40 can also be determined according to the system requirements.

[0062] As described above, in this embodiment, the top cover 56 is omitted compared to FIG. 3. This simplifies the structure and allows for cost reduction. Furthermore, there are no fastening parts such as caulking between the top cover 56 and the upper base 54 or the lower metal case 44. Water tends to accumulate in such fastening parts, and in the case of saltwater, deterioration due to corrosion and the like is likely to occur. In this embodiment, such places where water can accumulate are eliminated, and even if water gets on the product, it can dry quickly. Therefore, the configuration of FIG. 5 can be used as a countermeasure against salt damage.

[0063] In this embodiment, the mount resin 40 is made of conductive rubber, which often has lower conductivity than metal. However, the mount resin 40 has a relatively large cross-sectional area, low impedance, and a relatively large load on the lower metal case 44 and orifice body 42. This allows the contact resistance from the mount resin 40 to the lower base 48 to be maintained relatively low, making it possible to reduce the impedance of the conductive mount 400. However, the impedance is likely to be higher than in the embodiments of FIGS. 3 and 4, which use metal components, and this allows the mount to be used in harsh, special environments such as those exposed to salt damage, harmful rays, and a large amount of poisonous (harmful) substances.

[0064] "Further Other Embodiments" On the other hand, conductive rubber contains a large amount of conductive material, which can make it less weather-resistant and less resistant to chemical reactivity than non-conductive rubber. Therefore, in environments where harmful rays or poisonous (harmful) substances are present other than salt damage, the surface of mounting resin 40 can be covered with a coating made of a chemical-resistant material such as weather-resistant rubber to prevent the mounting resin 40 from being exposed.

[0065] 6 is a diagram showing a configuration in which the surface of the mount resin 40 is covered with a covering material 70. In this way, the covering material 70 is disposed between the peripheral edge of the upper base 54 and the upper end of the lower metal case 44. This covering material 70 can be made of weather-resistant rubber, for example, and has an overall conical (umbrella) shape.

[0066] By adopting such a structure, it is possible to configure the mount resin 40 so as to be more specialized in terms of electrical conductivity.

[0067] Additionally, the surfaces of the lower metal case 44, lower base 48, etc. may also be covered with a covering material such as weather-resistant rubber.

[0068] The weather-resistant rubber covering material, the lower metal case 44, and the lower base 48 may be joined by adhesive or thermocompression bonding.

[0069] "Effects of the embodiment" The conductive mount according to the embodiment improves the noise transmission performance from the case to the vehicle body, and can prevent adverse effects on various components, etc.

[0070] Furthermore, in this embodiment, the increase in the number of new parts is small, and the cost of the system can be reduced.

[0071] Furthermore, since there is no increase in space, it is possible to maintain competitiveness in miniaturizing systems.

[0072] As mentioned above, the application of the present invention to special-purpose vehicles and the like will enable us to provide products in this field that are even more highly functional and cost-competitive.

[0073] Conductive mounts can be designed to essentially satisfy the shock acceleration and vibration acceleration suppression performance of conventional non-conductive mounts. Therefore, the configuration of this embodiment does not cause any problems with these performances. For example, because the top cover 56 has six degrees of freedom, it does not affect the mount's inherent spring and damping characteristics.

[0074] There are no changes to the basic structure of the case or fuel cell stack, so there is no increase in weight or size.

[0075] Furthermore, the conductive mount is basically the same as a conventional mount, does not require new component design, and can be developed within the design range, so there is no increase in development costs or the time from ordering to delivery (lead time: LT).

[0076] The change in manufacturing method due to the change from the conventional mounting structure can be made using existing technology and equipment, so there is no decrease in productivity, no need to install new production equipment, and no increase in manufacturing costs. [Explanation of symbols]

[0077] 10 fuel cell stack, 12 lower case, 14 DC-DC converter, 16 upper case, 20, 34 cable, 22 element cooler, 30 inverter, 36 shielded wire, 38 capacity, 40 mount resin, 42 orifice body, 44 lower metal case, 46 diaphragm, 48 lower base, 50, 58 mounting bolt, 54 upper base, 56 upper cover, 60 metal mesh, 62 fixing member, 70 covering material, 100 fuel cell stack case, 200 control equipment case, 300 vehicle body side member, 400 conductive mount, 500 non-conductive mount.

Claims

1. A component support structure for supporting a metal component case that houses electronic components on a metal vehicle body component, a deformable mounting resin having a fluid chamber whose volume changes as liquid flows in and out; an upper metal base disposed at an upper end of the mount resin and fastened to the component case; a lower metal case that supports the mount resin from below; a metal lower base for fastening the lower metal case to the vehicle body member; Including, The upper base and the lower metal case are connected by a deformable metal connecting member, or the mounting resin is made conductive to electrically connect the component case and the vehicle body component. Member support structure.

2. The member support structure according to claim 1, The metal connecting member is a plate-like member having a corrugated cross section and thus being expandable and contractible. Member support structure.

3. The member support structure according to claim 1, The metal connecting member is a plate-like member that has a mesh structure and is therefore stretchable. Member support structure.

4. The member support structure according to claim 1, The mounting resin is electrically conductive. Member support structure.

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