Mounting device

Abstract

To provide a mounting device that allows for easy adjustment of the weight of the counterweight, thereby improving the versatility of the mounting device. [Solution] The rear mounting device 10 has a cylindrical portion 12A that houses the mounting bush 11, a mounting portion 12 that is fixed to the cross member 3, a mounting bracket 13 that is connected to the mounting bush 11 and the drive device 5, and a mass 14 attached to the cylindrical portion 12A. The mass 14 is composed of a group of plate-like members 14A, 14B, and 14C that are stacked in the thickness direction and integrated.

Description

Technical Field

[0001] The present invention relates to a mounting device.

Background Art

[0002] Vehicles such as automobiles generate vibrations due to the operation of internal combustion engines or motors that constitute the drive device. The vibrations of the drive device are transmitted to the vehicle body through vibration transmission members such as the vehicle body frame from the mounting device that supports the drive device on the vehicle body member. However, when a natural resonance occurs in the vibration transmission member, the vibrations transmitted to the vehicle body are amplified, resulting in deterioration of the vehicle interior noise and vehicle body vibrations.

[0003] Therefore, conventionally, a mass damper or a dynamic damper is attached to these vibration transmission members to suppress the vibrations transmitted from the drive device to the vibration transmission members.

[0004] A mass damper is configured to add a mass (weight) to the vibration transmission member, thereby changing the natural frequency of the vibration transmission member and reducing the vibrations transmitted from the drive device to the vibration transmission member.

[0005] As a conventional mass damper, an attachment structure of a dynamic damper described in Patent Document 1 is known.

[0006] This attachment structure of the dynamic damper has a rear mount disposed on the rear cross member. An anti-vibration device that supports the rear side of the power unit is disposed on the rear mount via a mounting bracket. The anti-vibration device is floatingly supported on the rear cross member via a plurality of bolts and mount brackets.

[0007] A dynamic damper is attached to the mount bracket. The dynamic damper includes a dynamic damper bracket, an elastic coupling body, and a weight (mass).

Prior Art Documents

Patent Documents

[0008] [Patent Document 1] Patent No. 6502973 [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] By the way, if the characteristics of the drive unit, which is the source of vibration, change during the development of the drive unit, it is necessary to adjust the weight of the damper each time to reduce the intended vibration.

[0010] However, in conventional dynamic damper mounting structures, the weight is a single mass, making it difficult to easily change the overall mass. Therefore, reducing the vibration transmitted from the drive unit to the vibration transmission member requires changing the entire mass, resulting in low versatility for dynamic dampers.

[0011] This invention was made in view of the circumstances described above, and aims to provide a mounting device that allows for easy modification of the weight of the counterweight and improves versatility. [Means for solving the problem]

[0012] The present invention relates to a mounting device for supporting a drive unit that transmits driving force to a drive wheel on a vehicle body member, comprising: a mounting portion having a cylindrical portion for housing a mount bush and fixed to the vehicle body member; a mounting bracket connected to the mount bush and the drive unit; and a weight attached to the cylindrical portion, wherein the weight is composed of a group of plate-shaped members in which a plurality of plate-shaped members are stacked in the thickness direction and integrated. [Effects of the Invention]

[0013] As described above, the present invention allows for easy modification of the weight of the counterweight, thereby improving the versatility of the mounting device. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 is a plan view of a drive device including a mount device according to an embodiment of the present invention. [Figure 2] Figure 2 is a right side view of a drive device including a mount device according to an embodiment of the present invention. [Figure 3] Figure 3 is a rear view of a drive device including a mount device according to an embodiment of the present invention. [Figure 4] Figure 4 is a view of a rear mount device according to an embodiment of the present invention as seen from above. [Figure 5] Figure 5 is a view of a rear mount device according to an embodiment of the present invention as seen from behind.

Mode for Carrying Out the Invention

[0015] A mount device according to an embodiment of the present invention is a mount device that supports a drive device that transmits a driving force to a driving wheel on a vehicle body member, and has a cylindrical portion that houses a mount bush, a mount portion fixed to the vehicle body member, a mount bracket connected to the mount bush and the drive device, and a weight attached to the cylindrical portion. The weight is composed of a group of plate-like members in which a plurality of plate-like members are overlapped and integrated in the plate thickness direction.

[0016] Thereby, in the mount device according to an embodiment of the present invention, the weight of the weight can be easily changed, and the versatility of the mount device can be improved.

Example

[0017] Hereinafter, a mount device according to an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 5 are views showing a mount device according to an embodiment of the present invention.

[0018] First, the configuration will be described. In FIGS. 1 to 5, the vertical, front-rear, left-right directions are based on the drive device in the state arranged in the vehicle, the front-rear direction of the vehicle is the front-rear direction, the left-right direction (vehicle width direction) of the vehicle is the left-right direction, and the vertical direction (height direction) of the vehicle is the vertical direction.

[0019] As shown in FIG. 1, the vehicle 1 includes a left side member 2L, a right side member 2R, and a cross member 3. The left side member 2L, the right side member 2R, and the cross member 3 of the present embodiment constitute a vehicle body member.

[0020] The left side member 2L and the right side member 2R are arranged at intervals in the vehicle width direction and extend in the front-rear direction. The vehicle width direction is the left-right direction. The cross member 3 extends in the vehicle width direction, and its left and right ends are connected to the left side member 2L and the right side member 2R.

[0021] A drive device 5 is arranged in the space surrounded by the left side member 2L, the right side member 2R, and the cross member 3.

[0022] Specifically, the drive device 5 is arranged between the left side member 2L and the right side member 2R in the vehicle width direction and in front of the cross member 3 in the front-rear direction at the front part of the vehicle 1.

[0023] The drive device 5 all has a motor generator (not shown), an inverter as a power control device for controlling the power supplied to the motor generator, a speed reducer for reducing the driving force (rotation speed) of the motor generator, and a differential device for transmitting the power of the speed reducer to the left and right front wheels 7L, 7R via the left drive shaft 6L and the right drive shaft 6R.

[0024] That is, the drive device 5 transmits a driving force to the left and right front wheels 7L, 7R. The front wheels 7L, 7R of the present embodiment constitute drive wheels.

[0025] The motor generator, the inverter, the speed reducer, and the differential device are housed in a drive case 8.

[0026] The motor generator has two functions: that of an electric motor driven by power supplied from a high-voltage battery (not shown) via an inverter, and that of a generator that generates electricity using the reverse driving force input from a differential device.

[0027] The inverter converts DC power supplied from a high-voltage battery into three-phase AC power and supplies it to the motor generator, or converts the three-phase AC power generated by the motor generator into DC power to charge the high-voltage battery. The high-voltage battery is composed of a secondary battery, such as a lithium-ion battery.

[0028] At the rear of vehicle 1 are a drive source (not shown), the left and right rear drive shafts to which the power from the drive source is transmitted, and the left and right rear wheels.

[0029] In this embodiment, vehicle 1 can be driven in two-wheel drive mode when only the front drive unit 5 is driven, and in four-wheel drive mode when both the drive unit 5 and the drive source are driven. The rear drive source is not particularly limited.

[0030] Furthermore, the front drive unit 5 may be a combination of an internal combustion engine and a motor as the drive source, or it may be an internal combustion engine alone as the drive source, instead of the motor used as the drive source in this embodiment.

[0031] As shown in Figures 2 and 3, the drive unit 5 is elastically supported on the cross member 3 by the rear mounting device 10.

[0032] As shown in Figure 3, the rear mounting device 10 includes a mounting bush 11, a mounting portion 12, a mounting bracket 13, and a mass 14.

[0033] The mounting bush 11 comprises an inner cylinder 11A whose central axis extends in the front-rear direction, an outer cylinder 11B provided radially outward from the inner cylinder 11A and whose central axis also extends in the front-rear direction, and a mounting rubber 11C provided radially between the inner cylinder 11A and the outer cylinder 11B and connecting the inner cylinder 11A and the outer cylinder 11B, and is formed in a cylindrical shape overall.

[0034] The mounting portion 12 has a cylindrical portion 12A extending in the front-rear direction, a first leg portion 12B, and a second leg portion 12C.

[0035] As shown in Figures 1 and 2, the lower part of the cylindrical portion 12A is provided with a first leg portion 12B extending in the vehicle width direction and a second leg portion 12C extending rearward from the first leg portion 12B. The first leg portion 12B and the second leg portion 12C are fixed to the center of the cross member 3 in the vehicle width direction by bolts 31A and 31B (see Figure 1).

[0036] A mounting bush 11 is press-fitted into the cylindrical portion 12A, and the mounting bush 11 is housed within the cylindrical portion 12A. The mass 14 is fixed to the upper part of the cylindrical portion 12A by welding or the like.

[0037] Specifically, as shown in Figure 1, a boss portion 8a is provided on the rear wall 8A, and the boss portion 8a protrudes rearward from the rear wall 8A. The left end of the mounting bracket 13 in the vehicle width direction is fastened to the boss portion 8a by a bolt 31C behind the rear wall 8A.

[0038] The upper end of the mounting bracket 13 is fastened (connected) to the rear wall 8A by bolt 31D (see Figure 3), and the lower end of the mounting bracket 13 is fastened (connected) to the rear wall 8A by bolt 31E (see Figure 2).

[0039] In other words, the mounting bracket 13 is connected to the mounting section 12 and the drive unit 5, and connects the drive unit 5 and the mounting section 12.

[0040] As shown in Figures 4 and 5, the mass 14 has a plurality of thin plate-like members 14A, 14B, and 14C. The plate-like members 14A, 14B, and 14C are formed in a rectangular shape with the front-to-back direction being the longitudinal direction and the up-to-down direction being the short direction.

[0041] The mass 14 is composed of a group of plate-like members 14A, 14B, and 14C that are stacked and integrated in the thickness direction (vehicle width direction), and the plate-like members 14A, 14B, and 14C are attached to the upper part of the cylindrical part 12A such that the thickness direction is the circumferential direction of the cylindrical part 12A.

[0042] The plate-shaped member 14A is positioned at the left end (one end) in the circumferential direction of the cylindrical portion 12A, and the plate-shaped member 14B is positioned at the right end (right end) in the circumferential direction of the cylindrical portion 12A.

[0043] The plate-shaped member 14C is positioned between the plate-shaped member 14A and the plate-shaped member 14B in the circumferential direction of the cylindrical portion 12A, and multiple plate-shaped members 14C are arranged between the two plate-shaped members 14A and 14B.

[0044] In this embodiment, the plate-shaped member 14A constitutes a plate-shaped member at one end, and the plate-shaped member 14B constitutes a plate-shaped member at the other end. In addition, multiple plate-shaped members 14C constitute intermediate plate-shaped members.

[0045] As shown in Figure 5, the lower end 14a of plate-like member 14A and the lower end 14b of plate-like member 14B extend downwards more than the lower end 14c of plate-like member 14C. In other words, the vertical dimensions of plate-like members 14A and 14B are longer than the vertical dimensions of plate-like member 14C.

[0046] Recesses 14d, 14e, and 14f are formed on the upper surfaces of the plate-like members 14A, 14B, and 14C, and the recesses 14d, 14e, and 14f are recessed downward from the upper surfaces of the plate-like members 14A, 14B, and 14C.

[0047] Furthermore, recesses 14g, 14h, and 14i are formed on the front surfaces of the plate-like members 14A, 14B, and 14C, in addition to the upper surfaces of the plate-like members 14A, 14B, and 14C. The recesses may also be formed on the rear surfaces of the plate-like members 14A, 14B, and 14C, or on both the front and rear surfaces.

[0048] The plate-shaped members 14A, 14B, and 14C are attached to the cylindrical part 12A such that the recessed parts 14d, 14e, 14f, 14g, 14h, and 14i are aligned linearly in the vehicle width direction. The plate-shaped members 14A, 14B, and 14C are integrated by arc welding applied to the recessed parts 14d, 14e, 14f, 14g, 14h, and 14i. In other words, the plate-shaped members 14A, 14B, and 14C are firmly joined by arc welding.

[0049] The lower end 14a of the plate-shaped member 14A and the lower end 14b of the plate-shaped member 14B are joined to the cylindrical portion 12A by welding. Thus, the mass 14 is fixed to the cylindrical portion 12A. In this embodiment, the mass 14 constitutes a weight.

[0050] As shown in Figures 1 and 3, the drive unit 5 is elastically supported on the left side member 2L by the left mounting device 15.

[0051] The left mounting device 15 includes a mounting section 16, a mounting bracket 17, and a mass 18.

[0052] The mounting portion 16 includes a cylindrical portion 16A, which extends cylindrically in the vehicle width direction. A leg portion 16B is provided at the lower part of the cylindrical portion 16A, and the leg portion 16B is fixed to the left side member 2L by a bolt 31F.

[0053] A mounting bush (not shown) is press-fitted into the cylindrical portion 16A, and the mounting bush is housed within the cylindrical portion 16A. The mass 18 is fixed to the upper part of the cylindrical portion 16A by welding or the like.

[0054] The mounting bracket 17 is connected to the mounting bush by bolt 31G. The mounting bracket 17 connects the mounting bush to the left side wall 8B of the drive case 8 and is fastened to the left side wall 8B of the drive case 8 by bolt 31H (see Figure 3).

[0055] The mass 18 has a plurality of thin plate-like members 18A. The plate-like members 18A are formed in a rectangular shape with the front-to-back direction being the longitudinal direction and the up-to-down direction being the short direction.

[0056] The mass 18 is composed of a group of plate-like members 18A that are stacked and integrated in the thickness direction (vehicle width direction), and the plate-like members 18A are attached to the cylindrical portion 16A such that the thickness direction is the axial direction of the cylindrical portion 16A.

[0057] A recessed portion 18a is formed on the upper surface of the plate-shaped member 18A, and the recessed portion 18a is recessed downward from the upper surface of the plate-shaped member 18A. In addition to the upper surface of the plate-shaped member 18A, a recessed portion may also be formed on at least one of the front and rear surfaces of the plate-shaped member 18A.

[0058] The plate-shaped member 18A is attached to the cylindrical portion 16A such that the recessed portions 18a are aligned in a straight line in the vehicle width direction, and the plate-shaped member 18A is integrated by arc welding to the recessed portions 18a. In other words, the plate-shaped member 18A is firmly joined by arc welding.

[0059] The lower end of the plate-shaped member 18A is joined to the cylindrical portion 16A by welding. Thus, the mass 18 is fixed to the cylindrical portion 16A. In this embodiment, the mass 18 constitutes a weight.

[0060] The drive unit 5 is elastically supported on the right side member 2R by the right mounting device 19. In this embodiment, the rear mounting device 10, the left mounting device 15, and the right mounting device 19 constitute the mounting device.

[0061] As shown in Figure 2, the right mounting device 19 has a mounting bush 20, a mounting portion 21, and a mass 22.

[0062] The mount bush 20 comprises an inner cylinder 20A whose central axis extends in the vehicle width direction, an outer cylinder 20B provided radially outward from the inner cylinder 20A and whose central axis also extends in the vehicle width direction, and a mount rubber 20C provided radially between the inner cylinder 20A and the outer cylinder 20B and connecting the inner cylinder 20A and the outer cylinder 20B, and is formed in a cylindrical shape overall.

[0063] The mounting portion 21 has a cylindrical portion 21A, which extends cylindrically in the vehicle width direction. A leg portion 21B is provided at the lower part of the cylindrical portion 21A, and the leg portion 21B is fixed to the right side member 2R by a bolt 31J.

[0064] The mount bush 20 is press-fitted into the cylindrical portion 21A, and the mount bush 20 is housed within the cylindrical portion 21A. The mass 22 is fixed to the upper part of the cylindrical portion 21A by welding or the like. The mount bush 20 and the right side wall 8C of the drive case 8 are connected by a bolt 31K. In this embodiment, the bolt 31K constitutes the mount bracket.

[0065] In other words, the drive unit 5 is elastically supported by the left side member 2L, the right side member 2R, and the cross member 3, so as to be mounted on the left side member 2L, the right side member 2R, and the cross member 3 by the rear mount device 10, the left mount device 15, and the right mount device 19.

[0066] The mass 22 has a plurality of thin plate-like members 22A. The plate-like members 22A are formed in a rectangular shape with the front-to-back direction being the longitudinal direction and the up-to-down direction being the short direction.

[0067] The mass 22 is composed of a group of plate-like members 22A that are stacked and integrated in the thickness direction (vehicle width direction), and the plate-like members 22A are attached to the cylindrical portion 21A such that the thickness direction is the axial direction of the cylindrical portion 21A.

[0068] As shown in Figure 2, a recess 22a is formed on the upper surface of the plate-shaped member 22A, and the recess 22a is recessed downward from the upper surface of the plate-shaped member 22A. In addition to the upper surface of the plate-shaped member 22A, a recess may also be formed on at least one of the front and rear surfaces of the plate-shaped member 22A.

[0069] The plate-shaped member 22A is attached to the cylindrical portion 21A such that the recessed portions 22a are aligned in a straight line in the vehicle width direction, and the plate-shaped member 22A is integrated by arc welding to the recessed portions 22a. In other words, the plate-shaped member 22A is firmly joined by arc welding.

[0070] The lower end of the plate-shaped member 22A is joined to the cylindrical portion 21A by welding. Thus, the mass 22 is fixed to the cylindrical portion 21A. In this embodiment, the mass 22 constitutes a weight.

[0071] As shown in Figure 2, when a virtual straight line L is set that crosses the central axis of the cylindrical portion 21A in the vertical direction, the plate-shaped member 22A is fixed to the upper part of the cylindrical portion 21A such that the recessed portion 22a passes through the virtual straight line L.

[0072] Furthermore, although not shown in the diagram, if a virtual straight line is set that crosses the central axis of the cylindrical portion 16A in the vertical direction, the plate-shaped member 18A is fixed to the upper part of the cylindrical portion 16A such that the recessed portion 18a passes through the virtual straight line.

[0073] Next, the effects of the front structure of vehicle 1 in this embodiment will be explained. In this embodiment, the rear mount device 10, left mount device 15, and right mount device 19 support the drive unit 5, which transmits driving force to the front wheels 7L and 7R, on the cross member 3, left side member 2L, and right side member 2R, respectively.

[0074] The rear mounting device 10 has a cylindrical portion 12A that houses the mounting bush 11, a mounting portion 12 fixed to the cross member 3, a mounting bracket 13 connected to the mounting bush 11 and the drive unit 5, and a mass 14 attached to the cylindrical portion 12A. The mass 14 is composed of a group of plate-like members 14A, 14B, and 14C that are stacked in the thickness direction and integrated.

[0075] The left mounting device 15 has a cylindrical portion 16A that houses a mounting bush, a mounting portion 16 fixed to the left side member 2L, a mounting bracket 17 connected to the mounting bush and the drive unit 5, and a mass 18 attached to the cylindrical portion 16A. The mass 18 is composed of a group of plate-like members 18A that are stacked in the thickness direction and integrated.

[0076] The right mounting device 19 has a cylindrical portion 21A that houses the mounting bush 20, a mounting portion 21 fixed to the right side member 2R, a bolt 31K that connects the mounting bush 20 to the drive device 5, and a mass 22 attached to the cylindrical portion 21A. The mass 22 is composed of a group of plate-like members 22A that are stacked in the thickness direction and integrated.

[0077] This allows the weight of the rear mounting device 10, the left mounting device 15, and the right mounting device 19 to be adjusted by adjusting the number of plate-shaped members 14C, 18A, and 22A.

[0078] Therefore, the natural frequencies of the left side member 2L, right side member 2R, and cross member 3, including the rear mount device 10, left mount device 15, and right mount device 19, can be changed, and vibrations transmitted from the drive device 5 to the left side member 2L, right side member 2R, and cross member 3 can be reduced.

[0079] Thus, the rear mounting device 10, left mounting device 15, and right mounting device 19 of this embodiment allow for easy modification of the weights of masses 14, 18, and 22, thereby improving the versatility of the rear mounting device 10, left mounting device 15, and right mounting device 19.

[0080] In addition, the rear mounting device 10, the left mounting device 15, and the right mounting device 19 can be easily formed by press-forming thin plate-like members 14A, 14B, 14C, 18A, and 22A one by one, thereby creating inexpensive masses 14, 18, and 22.

[0081] Therefore, by combining the press-formed plate-shaped members 14A, 14B, 14C, 18A, and 22A, it is possible to manufacture the rear mounting device 10, left mounting device 15, and right mounting device 19, taking into consideration the surrounding layout and compatibility with the cylindrical parts 12A, 16A, and 21A, and as a result, the manufacturing cost of the rear mounting device 10, left mounting device 15, and right mounting device 19 can be reduced.

[0082] Furthermore, according to the rear mounting device 10 of this embodiment, recesses 14d, 14e, 14f, 18a, and 22a are formed on the upper surfaces of the plate-shaped members 14A, 14B, 14C, 18A, and 22A, and the plate-shaped members 14A, 14B, 14C, 18A, and 22A are attached to the cylindrical parts 12A, 16A, and 21A such that the recesses 14d, 14e, 14f, 14g, 14h, 14i, 18a, and 22a are aligned linearly in the vehicle width direction.

[0083] This allows the plate-shaped members 14A, 14B, 14C, 18A, and 22A to be assembled by stacking them, using the recessed portions 14d, 14e, 14f, 18a, and 22a as a guide.

[0084] Furthermore, even if the contact surfaces of adjacent plate-shaped members 14A, 14B, 14C, 18A, and 22A are misaligned, for example, in the vertical direction, aligning the recessed portions 14d, 14e, 14f, 18a, and 22a with the jig prevents the plate-shaped members 14A, 14B, 14C, 18A, and 22A from shifting vertically, horizontally, and to the front and back, respectively.

[0085] This makes it possible to form a group of plate-shaped members 14A, 14B, 14C, 18A, and 22A with aligned outer edges, thereby improving the manufacturing process of the group of plate-shaped members.

[0086] Furthermore, since recesses 14d, 14e, 14f, 18a, and 22a are formed on the upper surfaces of the plate-like members 14A, 14B, 14C, 18A, and 22A, the recesses 14d, 14e, 14f, 18a, and 22a can be visually inspected from above, improving accessibility to the recesses 14d, 14e, 14f, 18a, and 22a and improving the workability of the manufacturing process for the plate-like members.

[0087] Furthermore, according to the rear mounting device 10, left mounting device 15, and right mounting device 19 of this embodiment, the plate-shaped members 14A, 14B, 14C, 18A, and 22A are arc-welded at the recessed portions 14d, 14e, 14f, 14g, 14h, 14i, 18a, and 22a. The welding is not limited to arc welding.

[0088] This allows for linear welding along the recessed portions 14d, 14e, 14f, 14g, 14h, 14i, 18a, and 22a, enabling the joining of adjacent plate-like members 14A, 14B, 14C, 18A, and 22A with equal force. Therefore, a group of plate-like members with thicker plate thicknesses can be easily manufactured. Note that welding is not limited to arc welding.

[0089] Furthermore, according to the rear mounting device 10 of this embodiment, the group of plate-shaped members, each consisting of multiple plate-shaped members 14A, 14B, and 14C, is attached to the cylindrical portion 12A such that the plate thickness direction is the circumferential direction of the cylindrical portion 12A.

[0090] This allows the weight of the rear mounting device 10 to be easily adjusted by adjusting the number of plate-shaped members 14A, 14B, and 14C arranged on the cylindrical portion 12A. As a result, the versatility of the rear mounting device 10 can be more effectively improved.

[0091] Furthermore, according to the rear mounting device 10 of this embodiment, the plate-shaped member group consists of a plate-shaped member 14A positioned at the left end of the cylindrical portion 12A in the circumferential direction, a plate-shaped member 14B positioned at the right end of the cylindrical portion 12A in the circumferential direction, and a plurality of plate-shaped members 14C positioned between the plate-shaped member 14A and the plate-shaped member 14B in the circumferential direction of the cylindrical portion 12A.

[0092] In addition, the lower end 14a of the plate-shaped member 14A and the lower end 14b of the plate-shaped member 14B extend downward more than the lower end 14c of the plate-shaped member 14C.

[0093] As a result, when attaching a group of plate-shaped members to the upper part of a cylindrical portion 12A whose outer surface is formed in a circular shape, the lower end 14a of the plate-shaped member 14A and the lower end 14b of the plate-shaped member 14B, which are arranged on both sides in the circumferential direction, can be fixed to the cylindrical portion 12A, thereby aligning the multiple plate-shaped members 14C vertically and creating a vertical gap between the plate-shaped members 14C and the cylindrical portion 12A, while also allowing the multiple plate-shaped members 14C to be positioned between the plate-shaped member 14A and the plate-shaped member 14B.

[0094] As a result, the plate-shaped members can be easily attached to the upper part of the cylindrical section 12A, improving the workability of the manufacturing process for the rear mounting device 10.

[0095] Furthermore, according to the left mounting device 15 and the right mounting device 19 of this embodiment, when a virtual straight line L is set that crosses the central axis of the cylindrical parts 16A and 21A in the vertical direction, the plate-shaped members 18A and 22A are fixed to the upper part of the cylindrical part 21A such that the recessed parts 18a and 22a pass through the virtual straight line L.

[0096] This allows the plate-like members to be attached to the cylindrical parts 16A and 21A by positioning the jig on a virtual straight line L and aligning the recessed parts 18a and 22a with the jig. This makes it easy to attach the plate-like members to the cylindrical parts 16A and 21A.

[0097] While embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that modifications can be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims. [Explanation of Symbols]

[0098] 1 vehicle 2L Left side member (body component) 2R Right side member (body component) 3. Cross member (vehicle body component) 5. Drive unit 7L, 7R Front wheels (drive wheels) 10. Rear mounting device (mounting device) 11,20 Mount Bushing 12,16,21 Mounting section 12A, 16A, 21A Cylindrical section 13,17 Mounting bracket 14, 18, 22 squares (weights) 14A Plate-shaped member (one end plate-shaped member) 14B Plate-shaped member (plate-shaped member on the other end) 14C Plate-shaped member (intermediate plate-shaped member) 14d, 14e, 14f recessed area 15 Left mounting device (mounting device) 18A, 22A Plate-shaped member 18a, 22a Recessed area 19 Right mounting device (mounting device) 31K Bolt (Mounting Bracket)

Claims

1. A mounting device that supports a drive unit that transmits driving force to the drive wheels on a vehicle body member, It has a mounting portion that has a cylindrical part for housing a mounting bush and is fixed to the vehicle body member, a mounting bracket that connects the mounting bush to the drive unit, and a weight attached to the cylindrical part, The mounting device is characterized in that the weight is composed of a group of plate-like members in which multiple plate-like members are stacked in the thickness direction and integrated.

2. A recess is formed on at least the upper surface of the plurality of plate-like members. The mounting device according to claim 1, characterized in that the plate-shaped member is attached to the cylindrical portion such that the recessed portions are aligned in a straight line.

3. The mounting device according to claim 2, characterized in that the plurality of plate-shaped members are welded to the recessed portions.

4. The mounting device according to any one of claims 1 to 3, characterized in that the plate-like members are attached to the cylindrical portion such that the plate thickness direction is the circumferential direction of the cylindrical portion.

5. The aforementioned group of plate-shaped members are The plurality of plate-shaped members consist of a one-end plate-shaped member positioned at one end of the cylindrical portion in the circumferential direction, a other-end plate-shaped member positioned at the other end of the cylindrical portion in the circumferential direction, and a plurality of intermediate plate-shaped members positioned between the one-end plate-shaped member and the other-end plate-shaped member in the circumferential direction of the cylindrical portion. The mounting device according to claim 4, characterized in that the lower end of the one-end side plate-like member and the lower end of the other-end side plate-like member extend downward below the lower ends of the plurality of intermediate plate-like members.

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