KR20240033635A - Wheel module for vehicle - Google Patents

Abstract

These embodiments include a lower arm coupled to the body of the vehicle, a knuckle rotatably coupled to the lower arm to steer the wheel, a stator fixing member of a drive system that drives the wheel, a knuckle mount connecting the knuckle and the stator fixing member, and a lower A vehicle wheel module is provided that includes a wire assembly that is fixed to an arm and connected to a stator fixing member to supply current to a stator of a drive system.

Description

Vehicle wheel module {WHEEL MODULE FOR VEHICLE}

These embodiments relate to vehicle wheel modules, and more specifically, in vehicle wheel modules, electricity can be stably supplied through wires to the drive system that drives the wheels, and the wiring efficiency and durability of the wires are increased, so that the wheel module This relates to a vehicle wheel module that can increase driving safety and secure precision, reliability, and durability for each wheel.

Generally, a vehicle has a drive system in which power generated from the engine is transmitted to the wheels through a power transmission device such as a crankshaft and a transmission, a steering system to control the direction of travel of the vehicle, and a steering system to control the speed of the vehicle. It is equipped with a braking system for driving and a suspension system to absorb shock from the road surface caused by driving.

Additionally, as electric vehicles using electric motors instead of engines have recently been developed and used, in-wheel motor systems equipped with electric motors on wheels are also being developed.

However, this in-wheel motor system has a structure that requires a separate steering system, braking system, and suspension system to be installed in the vehicle, so there is no significant difference in volume or weight compared to existing engine vehicles, thereby reducing the overall weight of the vehicle and reducing fuel efficiency. There were many problems.

In particular, in recent years, with the emergence of autonomous vehicle driving, not only is the overall weight of the vehicle reduced and fuel efficiency reduced, but the drive system, steering system, braking system, and suspension system are integrated into each wheel, improving the precision and reliability of each wheel. The need for research on vehicle wheel modules that can ensure durability, etc. is emerging.

Accordingly, the present embodiments were developed against the above-mentioned background, and in the vehicle wheel module, the rotation angle of the steering wheel operated by the driver and the actual rotation angle of the wheel can be accurately secured, thereby improving the driver's steering feeling and steering safety. Wheel modules can be provided.

Additionally, the present embodiments can provide a vehicle wheel module that can secure precision, reliability, durability, etc. for each wheel in the vehicle wheel module.

In addition, the problems to be solved by the embodiments of the present invention are not limited thereto, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to the present embodiments, a lower arm coupled to the body of the vehicle, a knuckle rotatably coupled to the lower arm to steer the wheel, a stator fixing member of a drive system that drives the wheel, and a knuckle connecting the knuckle and the stator fixing member. A vehicle wheel module may be provided including a wire assembly that is fixed to a mount and a lower arm and connected to a stator fixing member to supply current to a stator of a drive system.

In addition, in the present embodiments, the wire assembly includes one or more wires that transmit current and control signals from the power unit and electronic control device mounted on the vehicle to the stator fixing member, a connector that electrically connects the wire to the stator fixing member, and a wire. It may include an arm fixing member that secures to the lower arm.

Additionally, in the present embodiments, the wire assembly may further include a mount fixing member that secures the wire to the knuckle mount between the lower arm and the stator fixing member.

In addition, in the present embodiments, the knuckle is provided with a support hole in the center, a body part coupled to the knuckle mount, and a hinge hole through which a hinge shaft extending from the lower side of the body part and rotatably coupled to the lower arm passes. It may include an arm coupling part, a frame connection part extending from the upper side of the body part and connected to the frame of the steering system.

Additionally, in the present embodiments, the body portion may be provided with a fastening hole coupled with a knuckle mount and a fastening member around the support hole.

In addition, in the present embodiments, the knuckle mount may include an insertion support portion having a through hole in the center and inserted into the support hole, and an extension support portion extending radially from the insertion support portion and surrounding the knuckle to be coupled to the stator fixing member. You can.

Additionally, in these embodiments, the mount fixing member may be coupled to the insertion support portion as a fastening member.

Additionally, in the present embodiments, the mount fixing member may include a fixing part whose both ends are coupled to the fastening member, a support part spaced apart from the knuckle mount and supporting the wire, and a connection part connecting the fixing part and the support part.

Additionally, in these embodiments, the arm fixing member may be coupled to the upper side of the lower arm as a fastening member.

Additionally, in these embodiments, the lower arm may be provided with a plurality of cut grooves on the upper side where the wire is supported, and arm fixing members may be fastened to both sides of the cut grooves.

As described above, according to the present embodiments, electricity can be stably supplied through wires to the drive system that drives the wheels in the vehicle wheel module, and the wiring efficiency and durability of the wires are increased, thereby improving the driving safety of the wheel module. can be raised.

Additionally, in vehicle wheel modules, it is possible to secure precision, reliability, and durability for each wheel.

1 is a perspective view showing a vehicle wheel module according to the present embodiments;
2 to 6 are perspective views showing some of the vehicle wheel modules according to the present embodiments.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to illustrative drawings. In adding reference numerals to components in each drawing, the same components may have the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present technical idea, the detailed description may be omitted. When “comprises,” “has,” “consists of,” etc. mentioned in the specification are used, other parts may be added unless “only” is used. When a component is expressed in the singular, it can also include the plural, unless specifically stated otherwise.

Additionally, in describing the components of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the components are not limited by the term.

In the description of the positional relationship of components, when two or more components are described as being “connected,” “coupled,” or “connected,” the two or more components are directly “connected,” “coupled,” or “connected.” ", but it should be understood that two or more components and other components may be further "interposed" and "connected," "combined," or "connected." Here, other components may be included in one or more of two or more components that are “connected,” “coupled,” or “connected” to each other.

In the description of temporal flow relationships related to components, operation methods, production methods, etc., for example, temporal precedence relationships such as “after”, “after”, “after”, “before”, etc. Or, when a sequential relationship is described, non-continuous cases may be included unless “immediately” or “directly” is used.

On the other hand, when a numerical value or corresponding information (e.g., level, etc.) for a component is mentioned, even if there is no separate explicit description, the numerical value or corresponding information is related to various factors (e.g., process factors, internal or external shocks, It can be interpreted as including the error range that may occur due to noise, etc.).

FIG. 1 is a perspective view showing a vehicle wheel module according to the present embodiments, and FIGS. 2 to 6 are perspective views showing some of the vehicle wheel modules according to the present embodiments.

As shown in these drawings, the vehicle wheel module according to the present embodiments includes a lower arm 120 coupled to the body of the vehicle, and a knuckle rotatably coupled to the lower arm 120 to steer the wheel 110. 130), the stator fixing member 173 of the drive system 170 that drives the wheel 110, the knuckle mount 180 connecting the knuckle 130 and the stator fixing member 173, and fixed to the lower arm 120. It includes a wire assembly 190 that is connected to the stator fixing member 173 and supplies current to the stator of the drive system 170.

First, referring to FIG. 1, a drive system 170 and a braking system 150 are mounted on the inside of the wheel 110, a tire 115 is coupled to the outside of the wheel 110, and a tire 115 is attached to the lower arm 120. The lower end of the coupled knuckle 130 is rotationally supported by the lower arm 120, and the upper end of the knuckle 130 is coupled to the steering system and suspension system 140.

The knuckle 130 coupled to the wheel 110 has its lower end rotatably coupled to the lower arm 120 coupled to the body of the vehicle and is rotated by the steering system 160 to rotate the wheel 110.

The steering system 160 is coupled to the vehicle body and rotates the knuckle 130 via the frames 163, 165, and 167, and the upper part of the frames 163, 165, and 167 is connected to the steering motor 161 and the reducer. The lower portions of the frames 163, 165, and 167 are connected to the knuckle 130 to transmit the steering torque of the steering system 160 to the knuckle 130.

The steering system 160 includes a steering motor 161 and a reducer, and a steering electronic control device 162 is provided on one side of the housing in which the steering motor 161 and the reducer are built, and the reducer is the steering motor 161. The driving force is transmitted to the frames 163, 165, and 167.

In addition, the upper part of the suspension system 140 is supported and coupled to the frames 163, 165, and 167, and the lower part is coupled to the knuckle 130, thereby supporting the tires (163, 165, 167) and the knuckle 130. It absorbs the shock of the road surface transmitted through 115) and wheel 110.

The drive system 170 that drives the wheel 110 is largely composed of a rotor that is coupled with the wheel 110 and rotates together, and a stator that constitutes an electromagnetic circuit. Since this is similar to a general motor structure, detailed description will be omitted. .

The stator fixing member 173, which fixes the stator, is coupled to the knuckle 130 by the knuckle mount 180, and a connector connection hole 175 is provided on one outer side of the stator fixing member 173 to connect the wire assembly 190. is combined.

Additionally, cooling fins 177 are provided on the inner peripheral surface of the stator fixing member 173 to dissipate heat generated from the rotor and stator.

The wire assembly 190 is fixed to the lower arm 120 and is coupled to the connector connection hole 175 of the stator fixing member 173 to supply current to the stator of the drive system 170.

The wire assembly 190 includes one or more wires 191 that supply current to the stator fixing member 173 from the power unit and electronic control device mounted on the vehicle, and a connector connecting the wire 191 to the stator fixing member 173. (193), and may include an arm fixing member 195 that secures the wire 191 to the lower arm 120.

One or more wires 191 may be provided, and in the present embodiments, three wires 191 required for a three-phase motor are shown as an example.

The connector 193 is mounted in the connector connection hole 175 of the stator fixing member 173 to electrically connect the wire 191 to the stator, and the wire 191 is routed from the connector 193 through the knuckle 130. It is arranged as an arm 120 and connected to the power supply unit and electronic control device mounted on the vehicle.

Additionally, in the present embodiments, the wire assembly 190 includes a mount fixing member 197 that secures the wire 191 to the knuckle mount 180 between the lower arm 120 and the stator fixing member 173. More may be included.

In this way, the wire 191 is placed from the connector 193 through the knuckle 130 to the lower arm 120 and connected to the power unit and electronic control device mounted on the vehicle, and is connected to the arm fixing member 195 and the mount fixing member 197. ), so that when the wheel 110 rotates by the steering system, interference with parts of the wheel module does not occur and restrictions on the length of the wire 191 do not occur.

That is, when the wire 191 in an in-wheel motor or wheel module is placed through the frames 163, 165, and 167 of the steering system 160 on the upper part of the knuckle 130, the axis of the steering motor 161, which is the center of rotation, Since the rotation is performed by the radial length of the frames (163, 165, 167), a large spare length of the wire (191) is required, and this requires the frames (163, 165, 167) of the steering system (160) or the suspension system ( 140) Interference occurs with parts.

However, according to the present embodiments, the wire 191 is disposed from the connector 193 through the knuckle 130 to the lower arm 120 and is positioned by the arm fixing member 195 and the mount fixing member 197. Since it is fixed, there is no interference between the wire 191 and the parts of the wheel module, and the length of the wire 191 can be significantly reduced.

The knuckle 130 has a support hole 132 in the center, a body portion 131 coupled to the knuckle mount 180, extends from the lower side of the body portion 131, and is rotatably coupled to the lower arm 120. It may include an arm coupling portion 135 having a hinge hole 134 through which the hinge shaft 133 penetrates, and a frame connecting portion 137 extending from the upper side of the body portion 131 and connected to the frame of the steering system. You can.

The insertion support portion 183 of the knuckle mount 180, which will be described later, is inserted and fixed into the support hole 132 formed in the body portion 131.

The arm coupling portion 135 and the frame connecting portion 137 extend laterally from the lower and upper sides of the body portion 131 to form a concave space in the body portion 131 so that the wire 191 is connected to the connector 193. When placed on the knuckle 130, the wire 191 forms a space in which the wire 191 is fixed by the mount fixing member 197.

That is, while the wire 191 is disposed in the direction of the support hole 132 from the connector 193 disposed laterally around the support hole 132, it is bent toward the upper side of the support hole 132 and then downward again. It is arranged and the position is fixed to the upper side of the lower arm 120.

Accordingly, the body portion 131 of the knuckle 130, the arm coupling portion 135, and the frame connecting portion 137 are arranged to surround the wire 191, which results in the wire 191 and the wheel module. It is possible to significantly reduce the length of the wire 191 without causing interference with parts.

In addition, the body portion 131 is provided with a fastening hole 101a coupled to the knuckle mount 180 and the fastening member 101 around the support hole 132, and in the present embodiments, the support hole 132 is the center. It is shown as an example that each is connected to the fastening member 101 on a diagonal line.

The knuckle mount 180, which has a shape that roughly intersects diagonally around the support hole 132, is provided with a through hole 181 in the center and includes an insertion support portion 183 inserted into the support hole 132, an insertion support portion ( 183) may include an extension support portion 185 that surrounds the knuckle 130 and extends in the radial direction and is coupled to the stator fixing member 173.

A rotor fixing member 179 that rotates and supports the rotor is coupled to the through hole 181 formed in the insertion support portion 183, thereby supporting the rotor to rotate together with the wheel 110.

The extension support portion 185 is arranged diagonally around the through hole 181 and is fixed and supported at four locations of the stator fixing member 173.

The mount fixing member 197 that secures the wire 191 to the knuckle mount 180 is coupled to the insertion support 183 with a fastening member 103. In the present embodiments, the mount fixing member 197 is connected to the through hole 181. ) is shown as an example of being coupled to the upper and lower sides of both sides of the insertion support portion 183.

The mount fixing member 197 includes a fixing part 197a whose both ends are coupled to the fastening member 103, a support part 197b laterally spaced apart from the knuckle mount 180 to support the wire 191, and a fixing part ( It includes a connection portion (197c) connecting the support portion (197b) with 197a).

In this way, the wire 191, whose position is fixed by the mount fixing member 197 through the knuckle 130, is placed on the lower arm 120, and the arm fixing member 195 is attached to the lower arm 120. It is coupled to the upper side with a fastening member 105 to fix the position of the wire 191.

Therefore, in the present embodiments, the position of the wire 191 is fixed by the arm fixing member 195 and the mount fixing member 197, so that interference with the wire 191 and parts of the wheel module does not occur and the wire 191 ) The length can be significantly reduced.

In addition, in the present embodiments, the lower arm 120 is provided with a plurality of cut grooves 125 on the upper side where the wire 191 is supported, and arm fixing members 195 are fastened to both sides of the cut groove 125. It can be.

The cut groove 125 formed in the lower arm 120 reduces the weight and volume of the lower arm 120 and at the same time reduces friction between the wire 191 and the lower arm 120 from vibration generated while the vehicle is running. The durability of (191) is improved.

As described above, according to the present embodiments, electricity can be stably supplied through wires to the drive system that drives the wheels in the vehicle wheel module, and the wiring efficiency and durability of the wires are increased, thereby improving the driving safety of the wheel module. can be raised.

Additionally, in vehicle wheel modules, it is possible to secure precision, reliability, and durability for each wheel.

The above description is merely an illustrative explanation of the technical idea of the present disclosure, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of the present disclosure. In addition, since the present embodiments are not intended to limit the technical idea of the present disclosure, but rather to explain it, the scope of the technical idea of the present disclosure is not limited by these embodiments. The scope of protection of this disclosure should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this disclosure.

Claims (10)

A lower arm coupled to the body of the vehicle;
A knuckle rotatably coupled to the lower arm to steer the wheel;
Stator fixing member of the drive system that drives the wheel:
A knuckle mount connecting the knuckle and the stator fixing member;
a wire assembly fixed to the lower arm and connected to the stator fixing member to supply current to the stator of the drive system;
A vehicle wheel module containing a. According to claim 1,
The wire assembly is,
One or more wires that supply current to the stator from a power supply unit and an electronic control device mounted on the vehicle;
a connector connecting the wire to the stator fixing member;
an arm fixing member that secures the wire to the lower arm;
A vehicle wheel module containing a. According to claim 2,
The wire assembly is,
A vehicle wheel module further comprising a mount fixing member for fixing the wire to the knuckle mount between the lower arm and the stator fixing member. According to claim 3,
The knuckle is,
A body portion provided with a support hole in the center and coupled to the knuckle mount;
an arm coupling portion extending from the lower side of the body portion and having a hinge hole through which a hinge shaft rotatably coupled to the lower arm passes;
a frame connection portion extending from the upper side of the body portion and connected to the frame of the steering system;
A vehicle wheel module containing a. According to claim 4,
A wheel module for a vehicle, characterized in that the body portion is provided with a fastening hole around the support hole that is coupled to the knuckle mount with a fastening member. According to claim 4,
The knuckle mount is,
An insertion support portion provided with a through hole in the center and inserted into the support hole;
an extension support portion surrounding the knuckle in the insertion support portion and extending in a radial direction and coupled to the stator fixing member;
A vehicle wheel module containing a. According to claim 6,
The wheel module for a vehicle, characterized in that the mount fixing member is coupled to the insertion support portion as a fastening member. According to claim 7,
The mount fixing member is,
A fixing portion at both ends of which are coupled to the fastening member;
a support portion spaced apart from the knuckle mount and supporting the wire;
A connection part connecting the fixing part and the support part;
A vehicle wheel module containing a. According to claim 2,
The wheel module for a vehicle, characterized in that the arm fixing member is coupled to the upper side of the lower arm as a fastening member. According to clause 9,
The lower arm is provided with a plurality of cut grooves on the upper side where the wire is supported, and the arm fixing members are fastened to both sides of the cut grooves.

Images