WO2007083645A1

WO2007083645A1 - In-wheel type motor system

Info

Publication number: WO2007083645A1
Application number: PCT/JP2007/050557
Authority: WO
Inventors: Haruo Iwano
Original assignee: Kabushiki Kaisha Bridgestone
Priority date: 2006-01-17
Filing date: 2007-01-17
Publication date: 2007-07-26
Also published as: JP2007190970A

Abstract

An in-wheel motor is mounted in a floating manner on an unsprung portion of a vehicle with a dynamic vibration absorber (20) placed on the side face side of an electric motor (10) that is coupled with the knuckle (5). The dynamic vibration absorber (20) has a motor installation member (21) installed on the side face side of a motor case (10a) of the electric motor (10), a knuckle installation member (22) installed on the knuckle (5), a spring member (23) for coupling together the motor installation member (21) and the knuckle installation member (22), two guide members (24, 24) for vertically guiding the direction of operation of the spring member (23), and a damper (25) placed in parallel with the guide members (24, 24). The construction above enables a stroke to be greater and the mass of the motor is allowed to operate stably as the mass of a dynamic damper.

Description

In-wheel motor system

Technical field

TECHNICAL FIELD [0001] The present invention relates to an in-wheel motor system configured to attach an in-wheel motor to a vehicle panel lower member via a dynamic vibration absorber and use the mass of the motor as the mass of the dynamic vibration absorber. It is.

Background art

In recent years, an in-wheel motor system in which a motor is built in a wheel is being adopted in a vehicle driven by a motor such as an electric vehicle. Among them, a hollow in-wheel motor 50 as shown in FIG. 10 is elastically supported by a vehicle undercarriage part via a dynamic vibration absorber 60, and the mass of the motor 50 is increased by a dynamic damper. An in-wheel motor system that is configured to act as a quality of the vehicle and has excellent ride comfort and road holding performance has been attracting attention (see, for example, Patent Documents 1 and 2).

More specifically, the in-wheel motor system includes a rotating side case 52 to which a motor port 51 is attached, the inside of the radial direction being open, and a concentric circular arrangement with the rotating side case 52. The above non-rotation of the hollow in-wheel motor 50 in which the motor stator 53 is attached at a predetermined interval and the non-rotation side case 54 whose outer side in the radial direction is opened is rotatably connected via a bearing 55. The side case 54 is connected to a knuckle 72, which is an undercarriage part of a vehicle coupled to an axle 71, through a dynamic vibration absorber 60 including a linear guide 61A, a panel member 61B, and a damper 64. The rotating side case 52 and the wheel 73 are coupled by a flexible coupling 80 that is a driving force transmission mechanism that can be eccentric to each other in the radial direction of the wheel 73.

Specifically, the dynamic vibration absorber 60 directly connects a motor side plate 62 attached to a non-rotating side case 54 of the motor 50 and a knuckle side plate 63 connected to a knuckle 72 as shown in FIG. A linear guide 61 with a panel in which a moving guide 61 A and a panel member 61B are integrally formed, and a cylinder 64a, a piston (not shown), a shaft 64b connected to the piston, and a damper 64 with force, Specifically, knuckle side plate 63 is provided with fixing members 63m and 63η to fix the linear bearing 6 la, which is the fixed portion of the above-mentioned linear motion guide 61 with panel, and the cylinder 64a, which is the fixed portion of the damper 64, to the motor side plate 62, the fixing member 62η , 62η is provided to fix the distal end portion of the guide shaft 61b which is the movable portion of the above-mentioned linear motion guide 61 with the panel and the distal end portion of the shaft 64b which is the movable portion of the damper 64.

In FIG. 10, 74 is a tire attached to the wheel, 75 is a hub connected to the wheel 73 and its rotating shaft, 76 is a suspension member having a shock absorber and the like, and 77 is attached to the hub 75. Brake disc.

On the other hand, as an example of using an inner rotor type electric motor as an in-wheel motor, a case 93 of a geared motor 90 in which an electric motor 91 and a reduction gear mechanism 92 are combined as shown in FIG. The upper part and the lower part are sandwiched by dampers 94a and 94b in which oil is sealed in rubber, and this is connected to the knuckle 95, which is a lower part of the vehicle panel, and the dampers 94a and 94b are further connected. In addition, a configuration has been proposed in which the geared motor 90 is floating-mounted at the lower part of the vehicle panel by connecting to the ball joints 97a and 97b that connect the Nack Nore 95 and the upper and lower arms 96a and 96b (for example, (See Patent Document 3).

Patent Document 1: JP-A-2005-178684

Patent Document 2: Japanese Patent Laid-Open No. 2005-329911

Patent Document 3: Japanese Unexamined Patent Application Publication No. 2005-126037

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in the hollow in-wheel motor 50, since the dynamic vibration absorber 60 needs to be incorporated inside the motor 50, the dynamic guide device 61 or the like such as the linear guide 61 is not only complicated. When exchanging the parts of the vibration absorber 60, since the in-wheel motor 50 was attached and detached, work such as wiring was also required.

On the other hand, when an elastic body such as the damper 94a or 94b is used as a buffer mechanism for floating mounting the motor or geared motor under the vehicle panel as in the example using the inner rotor type motor. Is used for the above-mentioned dynamic vibration absorber 60 V, the same as the dynamic vibration absorber 60 described above, which only lacks stability compared to the case of using a buffer mechanism having a panel member and a guide member, such as a linear motion guide 61 with a panel. In the same way, the assembly work is complicated because the motor is supported by the upper and lower forces.

Furthermore, in the above-described configuration in which the motor is sandwiched from above and below, an arm for sandwiching the geared motor 90 greatly is required, and there is a problem in the layout performance that is not only lightweight. . There is also a problem that it is difficult to increase the stroke width because of the problem of ground clearance.

[0005] The present invention has been made in view of the conventional problems. Even when an inner rotor type motor is used, the stroke width can be increased, and the mass of the motor is set as the mass of the dynamic damper. It is an object of the present invention to provide an in-wheel motor system that can be stably operated and can be lightweight.

Means for solving the problem

The invention according to claim 1 of the present application is a configuration in which a motor for driving a wheel is attached to a vehicle panel lower member via a dynamic vibration absorber, and the mass of the motor is used as the mass of the dynamic vibration absorber. In this in-wheel motor system, the dynamic vibration absorber is arranged on the side surface of the motor.

According to a second aspect of the present invention, a geared motor including an electric motor and a reduction gear mechanism that is connected to an output shaft of the motor and decelerates the rotation of the motor and transmits the reduced speed to a wheel is provided via a dynamic vibration absorber. In an in-wheel motor system that is attached to the lower part of a vehicle panel and uses the mass of the geared motor as the mass of the dynamic vibration absorber, the dynamic vibration absorber is mounted on the side surface of the motor or on the side of the motor and the speed reducer. It is arranged on the side of the gear.

The invention according to claim 3 is the in-wheel motor system according to claim 1 or claim 2, wherein the dynamic vibration absorber is attached to a side surface of a motor case that supports a stator side of the motor. Motor mounting member, a knuckle mounting member attached to a knuckle connected to a wheel portion, a panel member connecting the motor mounting member and the knuckle mounting member, a damper, and the panel member and the damper. It comprises a guide member that guides the operating direction. The invention's effect

[0007] According to the present invention, there is provided an electric motor that drives a wheel, or an electric motor and a reduction gear mechanism that is connected to an output shaft of the motor and decelerates the rotation of the motor and transmits it to the wheel. The geared motor is, for example, a motor mounting member that is mounted on a side surface of a motor case that supports the stator side of the motor, a knuckle mounting member that is mounted on a knuckle connected to a wheel portion, and the motor mounting member. Since the panel member and the damper for connecting the knuckle mounting member and the guide member for guiding the operation direction of the panel member and the damper are attached to the lower part of the vehicle panel, Even when using an inner rotor type motor, the stroke width can be increased, and the mass of the motor is the same as the mass of the dynamic damper. As a result, it can be operated stably.

In addition, since the dynamic vibration absorber is arranged on the side of the motor or on the side of the motor and the reduction gear, it is excellent in layout and assemblability and does not require an arm to support the motor or the gear motor. Therefore, the system can be reduced in size and weight.

Brief Description of Drawings

FIG. 1 is a front view showing a configuration of an in-wheel motor system according to the best mode 1 of the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of an in-wheel motor system according to the best mode 1 of the present invention.

FIG. 3 is a diagram showing a configuration of a dynamic vibration damping device according to the best mode 1 of the present invention.

FIG. 4 is a perspective view showing a configuration of an in-wheel motor system according to the best mode 1.

FIG. 5 is a diagram of a configuration of a dynamic vibration absorber according to the best mode 2 of the present invention and a floating mount of an in-wheel motor at the lower part of a vehicle panel using the dynamic vibration absorber.

FIG. 6 is a view showing a configuration of a knuckle mounting member of a dynamic vibration absorber according to a best mode 2 of the present invention.

FIG. 7 is a view for explaining a method of assembling the dynamic vibration absorber according to the present invention. FIG. 8 is a view for explaining a method of assembling the dynamic vibration absorber according to the present invention.

FIG. 9 is a diagram showing an example in which the dynamic vibration damping device of the present invention is applied to a geared motor.

FIG. 10 is a diagram showing a configuration of a conventional in-wheel motor system.

FIG. 11 is a diagram showing a configuration of a conventional dynamic vibration absorber.

FIG. 12 is a diagram showing a configuration of an in-wheel motor system using a conventional geared motor.

Explanation of symbols

[0009] 1 tire, 2 wheels, 2a rim, 2b wheel disc,

3 wheel hub, 3k hub rotation axis, 4 struts, 4a coil panel,

4b shock absorber, 5 knuckle, 5j bearing, 5s through hole,

6 braking device, 6a brake rotor, 6b brake caliper, 7 upper arm,

8 Lower arm, 10 Electric motor, 10S stator, 10R rotor,

10a motor case, 10b output shaft, 10j bearing, 10m mounting part,

10p rubber support member, 10q stopper rubber, 10G geared motor,

11 Flexible coupling, 12 Reduction gear mechanism,

20 Dynamic vibration absorber, 21 Motor mounting member, 21a Fixing plate, 21b, 21c Leg,

21d damper mounting part, 21k curved part, 21m, 22m fixing bolt,

22 knuckle mounting member, 22a fixing member, 22b housing, 22c knuckle mounting portion,

22d damper mounting part, 22q protrusion, 22s bolt insertion hole, 23 panel member,

24 guide member, 24a cylinder, 24b guide shaft, 25 damper,

25a cylinder, 25b shaft, 26, 27 bellows boots,

26a Lid.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode of the present invention will be described with reference to the drawings.

Best form 1.

FIG. 1 and FIG. 2 are diagrams showing the configuration of an in-wheel motor system according to the best mode 1. In each figure, 1 is a tire, 2 is a wheel that also has a force with a rim 2a and a wheel disc 2b, and 3 is the wheel described above. 2 and a wheel hub connected at its rotating shaft, 4 is a coil panel 4a and shock absorbers b, struts for suspending the knuckle 5 connected to the wheel hub 3 and the bearings 5j from the vehicle body, and 6 a brake rotor 6a mounted on the wheel knob 3 and the above A braking device having a brake caliper 6b attached to the knuckle 5, 7 an upper arm connected to the strut 4, 8 a lower arm supporting the knuckle 5 also with a lower force, and 10 supporting the stator 10S side An inner rotor type electric motor comprising a motor case 10a, an output shaft 10b rotatably attached to the motor case 10a via a bearing 10j, and a rotor 10R attached to the output shaft 10b. In this example, the side surface of the motor case 10a that supports the stator 10S side of the electric motor 10 and the upper side of the knuckle 5 are connected via the dynamic vibration absorber 20, and the above-mentioned electric power is supplied. The motor 10 is caused to function as the mass of the dynamic damper, and the motor output shaft 10b and the rotating shaft 3k of the wheel knob 3 are coupled by the flexible coupling 11, so that the electric motor 10 swings. Even so, the rotational force can be reliably transmitted to wheel 2. In FIG. 2, the strut 4 is omitted in order to clarify the mounting state of the dynamic vibration absorber 20.

As shown in FIGS. 3 (a) and 3 (b), the dynamic vibration absorber 20 includes a motor attachment member 21 attached to the side surface of the motor case 10a, and a knuckle attachment member 22 attached to the knuckle 5. Further, a panel member 23 comprising a coil panel for connecting the motor mounting member 21 and the knuckle mounting member 22, and a cylinder 24a and a guide shaft 24b are also provided, and the two operating directions of the panel member 23 are guided in the vertical direction. A damper 25 having a guide member 24, 24, a cylinder 25a, a piston (not shown), and a shaft 25b connected to the piston, arranged in parallel to the guide member 24, 24; It is equipped with bellows-shaped boots 26, 27 to prevent intrusion of dust and muddy water.The boot 26 is provided on the upper side of the knuckle mounting member 22, and the upper part 26a of the upper boot 26 is connected to the lid 26a. Ga The upper ends of the id shafts 24b and 24b are fixed. The boot 27 is provided between the motor attachment member 21 and the knuckle attachment member 22.

[0012] The motor mounting member 21 includes a fixing plate 21a that fixes a lower end side of the panel member 23 and lower end sides of guide shafts 24b and 24b, which are movable parts of the guide members 24 and 24, and the fixing plate 21a. Are provided on the end side and the central part in the direction parallel to the motor axis direction. Leg portions 21b and 21c having curved portions 21k along the outer shape of the cross section of the motor case 10a, and these leg portions 21b and 21c are projected from the outer peripheral side of the motor case 10a. The motor mounting member 21 side is fixed to the motor case 10a by fastening the mounting portion 10m with a fixing bolt 21m and a nut.

The knuckle mounting member 22 includes a fixing member 22a that fixes the upper end side of the panel member 23 and a cylinder 24a that is a fixing portion of the guide member 24, a housing 22b that houses the fixing member 22a, and the housing. A knuckle attachment portion 22c provided on the knuckle 5 side of the body 22b, and a bolt rod formed at a position corresponding to the through hole 5s provided on the knuckle 5 upper side of the knuckle attachment portion 22c. Insert the fixing bolt 22m into the hole 22s and use the nut V to attach the knuckle attachment member 22 to the knuckle 5.

[0013] On the other hand, the cylinder 25a, which is a fixed part of the damper 25, is connected to the damper mounting part 22d provided on the surface opposite to the knuckle attaching part 22c of the casing 22b by the movable part of the damper 25. An end portion of a shaft 25b is attached to a damper attachment portion 21d provided on the opposite side of the curved portion 21k of the leg portion 21c located at the center portion.

In this example, as shown in FIGS. 4 (a) and 4 (b), the housing 22b of the dynamic vibration absorber 20 is provided with a protrusion 22q extending in the center direction of the motor case 10a, and the motor A U-shaped rubber support member 10p having a pair of stopper rubbers 10q, 10q arranged so as to face each other on the case 10a is connected to the stopper rubbers 10q, 10q and the protrusion 22q. So that the maximum displacement width of the electric motor 10 is easily regulated, and the end of the protrusion 22q is fixed to the lower part of the strut 4 by the holding member 28. Like to do. As a result, the maximum displacement width of the electric motor 10 that is floating-mounted by the dynamic vibration absorber 20 can be easily controlled, so that even if the road surface force is excessively input, damage to the electric motor 10 is prevented. In addition, the knuckle mounting member 22 which is a fixing portion of the dynamic vibration absorber 20 can be fixed to both the knuckle 5 and the strut 4, so that the dynamic vibration absorber 20 can be stably operated. I'll do it.

[0014] Thus, according to the best mode 1, when the in-wheel motor is float-mounted on the lower part of the vehicle panel, it is attached to the side surface of the motor case 10a of the electric motor 10. Motor mounting member 21, knuckle mounting member 22 attached to knuckle 5, panel member 23 connecting motor mounting member 21 and knuckle mounting member 22, and operating direction of panel member 23 are guided in the vertical direction. A dynamic vibration absorber 20 including two guide members 24, 24 and a damper 25 arranged in parallel to the guide members 24, 24 is disposed on the side surface of the electric motor 10, and the electric motor 10 And knuckle 5 are combined, so even when an inner rotor type motor is used, the stroke width can be increased and the motor mass can be stably operated as the mass of the dynamic damper. be able to.

In addition, since the dynamic vibration absorber 20 is disposed on the side of the electric motor 10, the layout and assembly are excellent, and the arms that support the electric motor 10 are not required, thus reducing the size and weight of the system. Can be planned.

Best form 2.

In the best mode 1, the motor case 10a of the electric motor 10 is coupled to the motor mounting member 21 and the knuckle mounting member 22 by the panel member 23 and the guide members 24 and 24, and the knuckle mounting member 22 is fixed. The force that is coupled to the knuckle 5 using the dynamic vibration absorber 20 having a configuration in which the damper 25 is mounted between the member 22b and the motor mounting member 21, as shown in Figs. 5 (a) and (b) In place of the panel member 23 and the guide members 24, 24, the motor mounting member 31 is configured using two linear motion guides 33, 33 having the same structure as the direct motion guide 61 with a panel shown in FIG. The motor case 10a and the knuckle 5 may be coupled using the dynamic vibration absorber 30 configured to connect the knuckle mounting member 32!

At this time, if the configuration is such that the upper fixing plate 38 for fixing the upper ends of guide shafts 33b, 33b of the linear motion guides 33, 33 to be described later and the motor case 10a are coupled by the anti-swing member 34. In addition, the dynamic vibration absorber 30 can be operated more stably.

In FIGS. 5 (a) and 5 (b), reference numerals 36 and 37 denote attachments of the upper fixing plate 38 and the knuckle to prevent intrusion of dust and muddy water into the paneled linear motion guides 33 and 33. Between the fixing plate 3 la of the motor mounting member 31 and the knuckle mounting member 32 for fixing the lower end side of the guide shafts 33b and 33b of the linear motion guides 33 and 33 with the panel, respectively. It is a bellows-like boot attached. [0016] As shown in Fig. 6, the knuckle mounting member 32 of the dynamic vibration absorber 30 holds a linear bearing 33a that is a fixed portion of a linear guide 33A composed of a linear bearing 33a and a guide shaft 33b. For inserting cylindrical fixing holes 32G, 32G, 32G, and fixed bolts 22m provided on the knuckle 5 side of the fixing portion 32a for attaching the dynamic vibration absorber 30 to the knuckle 5. A knuckle attachment portion 32b in which a bolt insertion hole 32s is formed, and a rubber support member provided in the motor case 10a and a protrusion 32q provided to extend to a position facing the stopper rubbers 10q and 10q attached to the rod ρ. The holding member 32r provided in the extending direction of the protrusion 32q and connected to the strut 3 is integrally formed, and is a fixing portion corresponding to the fixing member 22a and the casing 22b of the best mode 1. 32a above The surface opposite to the raised portion 32q, the damper mounting portion 32d for fixing the cylinder 25a is a fixing portion of the damper 25 is provided (see Figure 5 (a)).

In addition, as shown in FIG. 5 (a), the motor mounting member 31 has substantially the same configuration as the motor mounting member 21 of the best mode 1, and the two linear motion guides with panels 33, The fixed plate 3 la that fixes the lower end side of the guide shafts 33b and 33b, which are the movable parts of 33, and the end portion side and the center portion of the lower portion of the fixed plate 3 la in the direction parallel to the motor axis direction Provided with leg portions 31b and 31c having curved portions along the outer shape of the cross section of the motor case 10a. The leg portions 31b and 31c are mounted on the outer peripheral side of the motor case 10a. A bolt insertion hole 3 Is for inserting a fixing bolt for attaching the dynamic vibration absorber 30 of this example to the side surface of the motor case 10a is formed at a position corresponding to the mounting hole 10s provided in the portion 10m. The leg portion 31c located at the center portion has an end of a shaft 25b that is a movable portion of the damper 25. Damper mounting portion 31d for fixing are provided.

On the other hand, the swing preventing member 34 has an arm mounting portion 34a provided on the end side in the direction parallel to the motor axial direction of the upper fixing plate 38 that fixes the upper end side of the guide shafts 33b, 33b, and one end thereof. An arm part 34b extending in the direction of the motor case 10a attached to the arm part attachment part 34a, and a second part provided on the upper side of the side surface of the motor case 10a attached to the other end side of the arm part 34b. And a second fixing portion 34c fixed to the mounting portion 10η.

Next, a method for assembling the dynamic vibration absorber 30 will be described.

First, as shown in FIG. 7, the knuckle mounting portion 32c moves directly into the cylindrical holes 32G and 32G. After inserting the linear bearing 33a of the guide 33A and fixing it from above and below with a snap ring (not shown), as shown in Fig. 8 (a) and (b), the guide shafts 33b and 33b of the linear guide 33A Panel members 33B and 33B are inserted on the outer peripheral side. The panel members 33B and 33B are fixed between the knuckle mounting member 32 and the fixing plate 31a of the motor mounting member 31, and both ends of the guide shafts 33b and 33b are connected to the fixing plate 31a and the upper portion. Fix to fixed plates 38 and respectively. The bellows-shaped boots 36 and 37 are attached at one end to the upper and lower parts of the knuckle attaching member 3 in advance, and after the guide shafts 33b and 33b are fixed, the other end is attached to the motor attaching member 31 and the above. It may be attached to the peripheral edge of the upper fixing plate 38. Thereafter, the cylinder 25a, which is a fixing portion of the damper 25, is fixed to the damper mounting portion 32d of the knuckle mounting member 32, and the damper 25 is fixed to the damper mounting portion 31d provided on the leg portion 31c of the motor mounting member 31. Fix the end of shaft 25b, which is a movable part.

Next, the motor case 10 a and the knuckle 5 are coupled by the dynamic vibration absorber 30.

The coupling order of the motor case 10a and the knuckle 5 is as follows. First, the motor attachment member 31 is attached to the motor case 10a, then the knuckle attachment member 32 is attached to the knuckle 5, and then the square bar 10q is attached. It is better to attach the rubber support member 10p and the holding member 32r similar to the holding member 29 of the best mode 1 to the lower part of the strut 4 and finally attach the anti-swing member 34 to the motor case 10a. The mounting order is not limited to this order.

The process up to the mounting of the rubber support member 10p and the holding member 28 is the same as in the best mode 1 and will not be described.

The swing prevention member 34 is attached by fixing the second fixing portion 34c of the arm portion 34b to the second mounting portion 10η of the motor case 10a with a bolt or the like (not shown). As a result, the side surface of the motor case 10a, the knuckle 5, and the panel members 33B and 33B of the linear motion guides 33 and 33 with the force panel are coupled with the linear motion guide 33A, so that the dynamic vibration absorber is further stabilized. Can be operated. Also, the guide shafts 33b and 33b of the linear guides 33 and 33 with panel are connected to the motor case 10a at both the upper and lower parts, so Even when a large longitudinal force is applied, the guide shafts 33b and 33b can be prevented from shaking in the longitudinal direction.

In the best modes 1 and 2 described above, the force in which the motor for driving the wheel is a direct drive motor, as shown in FIG. 9, the present invention is an in-wheel motor in which an electric motor 10 and the electric motor 10 The present invention can also be applied to a case where a gear motor 10G having a reduction gear mechanism 12 that decelerates the rotation of the motor and transmits it to the wheel is used. In this case, as shown in the figure, the motor case 10a of the electric motor 10 may be coupled to the knuckle 5 using the dynamic vibration absorber 30 (or the dynamic vibration absorber 20) configured as described above. However, a motor housing in which the motor case and the gear case are integrated is manufactured, and the electric motor 10 and the reduction gear mechanism 12 are accommodated therein, and the side surface side of the motor housing and the knuckle 5 are moved together. A dynamic vibration absorber having the same configuration as the dynamic vibration absorber 30 may be used for coupling. Further, the present invention is not limited to the vehicle having the strut type suspension shown in FIG. 1, but can be applied to a vehicle having a suspension having another configuration such as a double wishbone type suspension.

Industrial applicability

[0020] As described above, according to the present invention, even when an inner rotor type motor is used, the stroke width can be increased, and the mass of the motor can be stably used as the mass of the dynamic damper. In addition to being able to operate, the dynamic vibration absorber can be made compact and lightweight, so that it is excellent in layout and assembly, and the system can be made compact and lightweight, improving vehicle running safety and comfort. Further improvement can be achieved.

Claims

The scope of the claims

[1] In an in-wheel motor system in which a motor for driving wheels is attached to a vehicle panel lower member via a dynamic vibration absorber, and the mass of the motor is used as the mass of the dynamic vibration absorber. An in-wheel motor system, wherein the dynamic vibration absorber is arranged on a side surface of the motor.

[2] A geared motor, which is connected to the output shaft of this motor and has a reduction gear mechanism that reduces the rotation of the motor and transmits it to the wheel, is attached to the lower part of the vehicle panel via a dynamic vibration absorber. In the in-wheel motor system configured to use the mass of the geared motor as the mass of the dynamic vibration absorber, the dynamic vibration absorber is arranged on the side surface of the motor or on the side surface of the motor and the reduction gear. An in-motor motor system characterized by this.

[3] A motor mounting member that is mounted on the side of a motor case that supports the stator side of the motor, the knuckle mounting member that is mounted on a knuckle connected to a wheel portion, and the motor mounting member 3. A panel member, a damper, and a guide member for guiding an operation direction of the panel member and the damper, and a force for connecting the knuckle mounting member and the knuckle mounting member. Inhoichi Nore motor system.