KR102677268B1 - A corner module for vehicle - Google Patents

Abstract

The present invention relates to a corner module for a vehicle, and more specifically, to a corner module for a vehicle that is robust against external shocks, can increase torque, and can obtain output above a certain level regardless of wheel size.
The present invention for achieving this purpose includes a main housing; a drive motor mounted on the main housing; a half shaft module connected to the drive motor; a hub bearing connected to the half shaft module; a steering motor provided on the upper part of the main housing; A corner module for a vehicle is provided, including a steering reducer mounted on the main housing and transmitting the rotational force of the steering motor to the main housing.

Description

Corner module for vehicle {A CORNER MODULE FOR VEHICLE}

The present invention relates to a corner module for a vehicle, and more specifically, to a corner module for a vehicle that is robust against external shocks, can increase torque, and can obtain output above a certain level regardless of wheel size.

For corner modules equipped with in-wheels used in electric vehicles, the in-wheel output was determined according to the wheel size. In other words, in order to use a large motor to obtain large output, the size of the wheel had to be increased, so a large motor could not be used on a small wheel, so the size of the wheel became an important factor in determining the output.

In addition, in the case of in-wheel vehicles, because the motor is located inside the wheel, the weight itself is heavy, so when a rebound or bump occurs, the reaction action is slow and often causes a large impact to the vehicle body.

And, because the motor is placed on the wheel, when an external shock is applied to the wheel, the shock is transmitted to the motor, often causing damage or malfunction of the motor.

Korean Patent Publication No. 10-2023-0081804 (June 8, 2023)

The present invention was prepared to solve these problems, and its purpose is to provide a corner module for a vehicle that is robust against external shocks, can increase torque, and can obtain output above a certain level regardless of wheel size.

The present invention for achieving this purpose includes a main housing; a drive motor mounted on the main housing; a half shaft module connected to the drive motor; a hub bearing connected to the half shaft module; a steering motor provided on the upper part of the main housing; A corner module for a vehicle is provided, including a steering reducer mounted on the main housing and transmitting the rotational force of the steering motor to the main housing.

It is characterized in that it further includes a drive reducer disposed between the drive motor and the half shaft module.

The main housing includes a first housing and a second housing spaced apart from the first housing, and the drive motor includes a first motor mounting portion provided in the first housing, and a first motor provided in the second housing. It is characterized in that it is mounted on the second motor mounting part disposed adjacent to the mounting part.

It further includes a knuckle on which the hub bearing is mounted, wherein the knuckle includes: a body portion in which a hub bearing mounting hole is formed; It is characterized in that it includes a height adjustment module mounting portion provided on both sides of the body portion and equipped with a height adjustment module that adjusts the relative height of the wheel with respect to the body portion.

The height adjustment module includes a cylinder fixed to the knuckle; It includes a piston rod disposed above and below the cylinder and fixed to the main housing, and in accordance with a change in the relative height position of the cylinder with respect to the piston rod, a change in the relative height position of the knuckle with respect to the main housing is caused. .

The height adjustment module mounting part is characterized in that it is provided in the form of a frame that surrounds the cylinder and forms a space in which the cylinder is fixed.

At the front upper part of the main housing; A first piston rod coupling portion to which the end of the first piston rod disposed above the cylinder is coupled, and a second piston rod coupling portion to which the end of the first piston rod disposed below the cylinder is coupled.

According to this invention, there is an advantage that a certain amount of torque or more can be obtained by connecting a medium to large motor regardless of the size of the wheel.

In addition, because the motor and the wheel are separated, it is possible to suppress the shock to the wheel from being transmitted to the motor, and furthermore, since there is a half shaft composed of a constant velocity joint between them, the transmission of such shock can be alleviated. There is an advantage that durability increases accordingly.

In addition, since the motor is not mounted on the wheel, the sprung mass is reduced, which has the advantage that the corner module can respond quickly to changes in the external environment (irregularities or potholes).

Additionally, torque efficiency can be increased by using a drive reducer.

Figure 1 is a perspective view of a wheel mounted on a corner module according to the present invention.
Figure 2 is a perspective view of a corner module according to the present invention.
Figure 3 is a perspective view with some parts of the corner module according to the present invention removed.
Figure 4 is an exploded perspective view of the corner module according to the present invention.
Figure 5 is an exploded perspective view of the main housing and drive motor in the present invention.
Figure 6 is an exploded perspective view of the main housing, steering motor, and steering reducer in the present invention.
Figure 7 is an exploded perspective view of the main housing, cross arm, and drive motor in the present invention.
Figure 8 is a perspective view of the knuckle in the present invention.
Figure 9 is a perspective view of the height adjustment module in the present invention.
Figure 10 is a perspective view of the half shaft module in the present invention.
Figure 11 is a perspective view in a state without steering in the present invention.
Figure 12 is a top view of the vehicle in a straight-ahead state without steering in the present invention.
Figure 13 is a perspective view of the steering wheel in the first direction in the present invention.
Figure 14 is a top view of the steering wheel in the first direction in the present invention.
Figure 15 is a perspective view of the steering wheel in the second direction in the present invention.
Figure 16 is a top view of the state steered in the second direction in the present invention.
Figure 17 is a perspective view without height adjustment in the present invention.
Figure 18 is a perspective view of the wheel in a downward state in the present invention.
Figure 19 is a perspective view of the wheel in a state in which the wheel is raised in the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated and described in the drawings.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms.

The above terms are used only for the purpose of distinguishing one component from another.

For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component.

The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be.

On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, the embodiment will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numerals regardless of the reference numerals, and duplicate descriptions thereof will be omitted.

As shown in Figure 1, a wheel () is mounted on the corner module (1) according to the present invention, and the state in which the wheel () is removed is the same as Figure 2.

As shown in Figures 1 to 4, the corner module 1 includes a main housing 100, a drive motor 200 mounted at the rear of the main housing 100, and a drive motor 200 provided in front of the drive motor 200. A drive reducer (not shown), a half shaft 300 connected to the drive reducer (not shown), a hub bearing 400 connected to the half shaft 300, and a knuckle 500 on which the hub bearing 400 is mounted. ) and a brake disc 600 connected to the hub bearing 400.

Meanwhile, a brake caliper 700 is provided below the knuckle 500 to selectively contact the brake disc 600.

A cross arm 800 is provided at the bottom of the main housing 100, and one end of the lower arm 900 is rotatably connected to a protrusion at the bottom of the central portion of the cross arm 800.

Height adjustment module mounting portions 520 are provided at both ends of the knuckle, and a height adjustment module 1000 is coupled to the height adjustment module mounting portion 520. The height adjustment module 1000 includes a cylinder 1010 and a cylinder 1010. ) A first piston rod 1011 and a second piston rod 1012 are provided, respectively disposed above and below.

Meanwhile, the front of the main housing is provided with first piston rod coupling portions 111 and 121 protruding forward and second piston rod coupling portions 112 and 122 disposed below them.

That is, the height adjustment module 1000 is disposed between the first piston rod coupling portions 111 and 121 and the second piston rod coupling portions 112 and 122, and the height adjustment module 1000 is fixed to the knuckle 500. do.

Accordingly, the relative height position of the knuckle 500 with respect to the main housing may change according to the operation of the height adjustment module 1000.

Meanwhile, a steering motor 1100, a steering reducer 1200, and a mount 1300 are provided above the main housing 100.

The steering reducer 1200 includes a steering reducer housing 1210 and a harmonic gear module 1220 provided inside the steering reducer housing 1210. A mount 1300 is provided on the steering reducer 1200, and the mount 1300 is fixed to the vehicle body.

Additionally, a steering motor 1100 is provided on the mount 1300. Therefore, when the steering motor 1100 operates, the steering motor 1100 and the mount 1300 maintain their positions, the harmonic gear module 1220 and the steering reducer housing 1210 rotate, and the main housing 100 ) The steering movement can be performed by rotating itself.

As shown in Figure 5, the main housing 100 consists of two parts. That is, the first main housing 110 and the second main housing 120 are arranged to be symmetrical to each other and spaced apart from each other.

The first main housing 110 and the second main housing 120 are provided with motor mounting portions 113 and 123, respectively, and the motor mounting portions 113 and 123 are formed in the form of a block protruding inward and a semicircle formed on the side of the block. It includes a cess, and the space between the motor mounting portions 113 and 123 becomes a space through which the drive motor shaft passes.

The motor mounting portions 113 and 123 provided in the first main housing 110 and the second main housing 120 are arranged symmetrically spaced apart from each other and facing each other.

It is preferable that a groove corresponding to the shape of the front of the drive motor 200 is formed in the motor mounting portions 113 and 123, and the front of the drive motor 200 is accommodated in this groove and coupled by a separate fastening member.

As shown in Figure 6, a steering reducer mounting part is provided on the upper part of the first main housing 100 and the second main housing 100, and a steering reducer housing 1210 is coupled to the steering reducer mounting part. Therefore, when the steering reducer 1200 operates due to the operation of the steering motor 1100 and the steering reducer housing 1210 rotates, the first main housing 100 and the second main housing 100 also rotate.

The steering reducer mounting portion includes upper steering reducer mounting portions 114 and 124 and lower steering reducer mounting portions 115 and 125, and the upper steering reducer mounting portions 114 and 124 are coupled to the upper region of the steering reducer housing 1210. , the lower steering reducer mounting portions 115 and 125 are coupled to the lower region of the steering reducer housing 1210.

Here, the lower steering reducer mounting portions 115 and 125 protrude further inward than the upper steering reducer mounting portions 114 and 124, which means that the width of the lower region is relatively larger than the width of the upper region of the steering reducer housing 1210. Because it is narrow.

Meanwhile, the mount 1300 is provided with a flange portion 1310 provided on the outside and a through hole 1320 formed in the center, and the through hole 1320 is located in the upper area of the steering reducer 1200, A steering motor 1100 is mounted on the part.

Meanwhile, as shown in FIG. 7, on the front surfaces of the first and second main housings 100, as described above, first piston rod engaging portions 111 and 121 protruding forward and second disposed below them. Piston rod coupling portions 112 and 122 are provided.

The first piston rod coupling portions 111 and 121 protrude to the front, and first fixing holes 111a and 121a through which the first piston rod 1011 is inserted and fixed are provided.

The second piston rod coupling portions 112 and 122 protrude forward from the lower ends of the first and second main housings 100, and are provided with semicircular fixing grooves 112a and 122a. A horizontally arranged cross arm 800 is coupled to the front of the second piston rod coupling portions 112 and 122, and semicircular fixing grooves 801 and 802 in the cross arm 800 are provided.

As the cross arm 800 is coupled to the second piston rod coupling portions 112 and 122, the two fixing grooves 112a, 122a, 801, and 802 meet to form a circular second fixing hole, respectively, and the second fixing hole The end of the second piston rod 1012 is coupled and fixed.

Figure 8 shows the knuckle 500.

The knuckle 500 is composed of a U-shaped frame in plan.

The knuckle 500 is provided on both sides of the body portion 510, where the hub bearing mounting hole 511 is formed, and the body portion 510, and a height adjustment module ( It includes a height adjustment module mounting portion 520 on which 1000) is mounted.

The height adjustment module mounting portion 520 is preferably configured in the form of a square frame that surrounds the cylinder 1010 to form a space in which the cylinder 1010 is fixed.

As shown in Figure 9, the height adjustment module 1000 includes a cylinder 1010 fixed to the height adjustment module mounting part of the knuckle, and a second device disposed above and below the cylinder 1010 and fixed to the main housing 100. It includes first and second piston rods (1011, 1012), and according to a change in the relative height position of the cylinder (1010) with respect to the first and second piston rods (1011, 1012), the knuckle (500) relative to the main housing (100) ) can cause relative height and position changes.

Here, the height adjustment module 1000 may be pneumatic, electric, or hydraulic.

The first and second piston rods 1011 and 1012 are provided with fastening members such as nuts, washers and bushings to be coupled and fixed to the first and second piston rod coupling portions 111, 121, 112 and 122, respectively.

As shown in Figure 10, the half shaft module 300 is composed of a first constant velocity joint 310, a second constant velocity joint 320, and a connecting shaft 330 connecting them. The first constant velocity joint 310 is disposed on the drive motor 200 and the drive reducer (not shown), and the second constant velocity joint 320 is disposed on the hub bearing 400.

The first constant velocity joint 310 is preferably composed of a constant velocity joint that mainly uses plunging (e.g., a triport joint or a cross groove joint), and the second constant velocity joint 320 is a constant velocity joint that mainly uses cutting (e.g., It is preferable that it is composed of a Burfield joint).

Figures 11 and 12 show a state in which steering is not performed by the corner module according to the present invention, and Figures 13 and 14 show a state in which steering is performed in the first direction (inward or left direction). , Figures 15 and 16 show a state in which steering is performed in a second direction (outward direction or right direction), which is opposite to the first direction.

13 to 16, the steering motor 1100, the mount 1300, and the lower arm 900 maintain their positions, but the steering reducer 1200 operates by the operation of the steering motor 1100 to perform steering. When the reducer housing 1210 rotates, the main housing 100 also rotates accordingly, and accordingly, all parts connected to the main housing 100 can steer and rotate around the steering motor 1100.

Meanwhile, Figure 17 shows a neutral state in which height adjustment is achieved by the corner module according to the present invention, Figure 18 shows a rebound state in which the wheel is lowered compared to the state in Figure 17, and Figure 19 shows the state in Figure 17. Compared to this, it is in a bump state where the wheel is raised upward.

In Figure 17, the half shaft module 300 maintains a horizontal state.

In the case of Figure 18, compared to the case of Figure 17, the cylinder 1010 moves downward, so that the length of the first piston rod 1011 exposed upward is extended, and the second piston rod 1012 is exposed downward. The length is reduced.

As a result, the relative height of the knuckle 500 and the wheel W with respect to the main housing 100 is lowered.

This is to increase the height of the vehicle body relative to the ground or to provide compensation in case the wheel temporarily falls into a hole.

In this case, the half shaft module 300 is cut downward.

In the case of Figure 19, compared to the case of Figure 17, the cylinder 1010 moves upward, so that the length of the first piston rod 1011 exposed upward is reduced, and the second piston rod 1012 is exposed downward. The length increases.

As a result, the relative height of the knuckle 500 and the wheel W increases with respect to the main housing 100.

This is to lower the height of the vehicle body relative to the ground or to provide compensation when the wheel collides with a temporarily protruding part.

In this case, the half shaft module 300 is cut upward.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only for illustrating the invention, and those skilled in the art may make various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible.

Therefore, the true scope of rights of the present invention must be determined by the technical spirit of the patent claims.

100: main housing 200: drive motor
300: Half shaft module 400: Hub bearing
500: Knuckle 600: Brake Disc
700: Brake caliper 800: Cross arm
900: Lower arm 1000: Height adjustment module
1100: steering motor 1200: steering reducer
1300: Mount

Claims (7)

a main housing;
a drive motor mounted on the main housing;
a half shaft module connected to the drive motor;
a hub bearing connected to the half shaft module;
a steering motor provided on the upper part of the main housing;
It includes a steering reducer mounted on the main housing and transmitting the rotational force of the steering motor to the main housing,
It further includes a knuckle on which the hub bearing is mounted,
The knuckles are;
a body portion in which a hub bearing mounting hole is formed;
It includes a height adjustment module mounting portion provided on both sides of the body portion and equipped with a height adjustment module that adjusts the relative height of the wheel with respect to the body portion,
The height adjustment module includes a cylinder fixed to the knuckle;
It includes a piston rod disposed above and below the cylinder and fixed to the main housing,
According to the change in the relative height position of the cylinder with respect to the piston rod,
A corner module for a vehicle, characterized in that a change in the relative height position of the knuckle with respect to the main housing is caused. In paragraph 1
A corner module for a vehicle, further comprising a drive reducer disposed between the drive motor and the half shaft module. According to paragraph 1,
The main housing includes a first housing and a second housing spaced apart from the first housing,
The drive motor is a corner module for a vehicle, characterized in that it is mounted on a first motor mounting portion provided in the first housing and a second motor mounting portion provided in the second housing and disposed adjacent to the first motor mounting portion. delete delete According to paragraph 1,
A corner module for a vehicle, wherein the height adjustment module mounting portion is provided in the form of a frame that surrounds the cylinder to form a space in which the cylinder is fixed. According to paragraph 1,
At the front upper part of the main housing;
A first piston rod coupling portion where the end of the first piston rod disposed on the cylinder is coupled, and
A corner module for a vehicle, characterized in that a second piston rod coupling portion is provided to which the end of the first piston rod disposed below the cylinder is coupled.