KR102645080B1 - Connecting assembly for in-wheel motor and mobility including the same - Google Patents

Abstract

A connection assembly for an in-wheel motor of the present invention and mobility including the same are disclosed. According to one aspect of the present invention, a connection assembly for an in-wheel motor that connects an in-wheel motor installed on a wheel of a three- or four-wheeled mobility and a frame of the mobility, comprising a plurality of first fastening holes on a first side. a bracket including a body portion, an insertion portion protruding from the first surface in a cylindrical shape, and a fixing portion provided on a second surface of the body portion and accommodating an end of the power shaft of the in-wheel motor; and a plate provided to be in close contact with the first surface and having a plurality of second fastening holes at positions corresponding to the first fastening holes, and a connection part protruding from the plate and having a through hole for accommodating the insertion part. A connection assembly for an in-wheel motor including a bracket reinforcing member may be provided.

Description

Connecting assembly for in-wheel motor and mobility including same {CONNECTING ASSEMBLY FOR IN-WHEEL MOTOR AND MOBILITY INCLUDING THE SAME}

The present invention relates to a connection assembly for an in-wheel motor and mobility including the same, and more specifically, to a connection assembly for an in-wheel motor that can connect an in-wheel motor and various types of mobility and is simple to assemble and disassemble, and to mobility including the same. will be.

In general, as population density in large cities increases and vehicle penetration increases, traffic congestion is becoming more serious, and as people spend more time on the road, they are experiencing mental and physical stress.

Accordingly, transport companies that need to provide rapid logistics services, such as courier companies and delivery agencies, use motorcycles as an alternative means of transportation to provide better services, and ordinary people use electric vehicles as an alternative means of transportation for rapid movement. You can also use a bicycle.

However, in the case of electric bicycles and motorcycles, they are two-wheeled mobility equipped with two wheels, which requires a high degree of skill in stable operation, and is significantly worse than vehicles in terms of safety, and is not suitable for logistics transportation in terms of loadability. This exists. Therefore, research and development is being conducted on three- or four-wheeled mobility in terms of maneuverability, stability, and loadability.

In addition, in the case of recent alternative means of transportation, there is a trend to generate power using motors instead of fossil fuels in the method of transmitting power. In general, the power of the motor is transmitted to the wheel through a chain to generate driving force. However, this power transmission method using a chain has a complex structure and requires many parts, and problems such as increased maintenance costs may occur as the parts age. Accordingly, research and development is being conducted on chainless module systems, for example, in-wheel motors in which the motor is built inside the wheel are being developed.

Korean Patent No. 10-1127736 (2012. 03. 09)

This embodiment is intended to provide a connection assembly for an in-wheel motor that allows the in-wheel motor and the mobility main body to be easily assembled and disassembled, and mobility including the same.

This embodiment is intended to provide a connection assembly for an in-wheel motor that improves torque transmission of the motor by preventing rotation of the power shaft of the in-wheel motor, and mobility including the same.

This embodiment is intended to provide a connection assembly for an in-wheel motor that has a simple power transmission structure of the motor, enables miniaturization, and improves maintainability, and mobility including the same.

According to one aspect of the present invention, a connection assembly for an in-wheel motor that connects an in-wheel motor installed on a wheel of a three- or four-wheeled mobility and a frame of the mobility, comprising a plurality of first fastening holes on a first side. a bracket including a body portion, an insertion portion protruding from the first surface in a cylindrical shape, and a fixing portion provided on a second surface of the body portion and accommodating an end of the power shaft of the in-wheel motor; and a plate provided to be in close contact with the first surface and having a plurality of second fastening holes at positions corresponding to the first fastening holes, and a connection part protruding from the plate and having a through hole for accommodating the insertion part. A connection assembly for an in-wheel motor including a bracket reinforcing member may be provided.

The bracket includes a plurality of ribs protruding along an outer peripheral surface of the insertion portion, and the bracket reinforcing member is recessed at a position corresponding to the rib and includes a plurality of locking grooves provided to accommodate the rib. A connection assembly for a motor may be provided.

The body portion may be provided with a connection assembly for an in-wheel motor that protrudes from one side and includes a mounting mount that connects the braking device and the bracket.

The fixing part may be provided with a connection assembly for an in-wheel motor in which protrusions are recessed in a shape corresponding to a protrusion formed at the end of the in-wheel motor power shaft.

The protrusion of the fixing unit may be provided with a connection assembly for an in-wheel motor formed in a serrated shape.

A connection assembly for an in-wheel motor may be provided, further comprising a first fastening hole of the bracket, a second fastening hole of the bracket reinforcement member, and a bolt simultaneously fastening the frame of the mobility.

The bracket may be provided with a connection assembly for an in-wheel motor including a third fastening hole penetrating the insertion portion and the fixing portion.

The bracket may be provided with a connection assembly for an in-wheel motor that is fastened with a bolt simultaneously passing through a hole provided at the center of the power shaft of the in-wheel motor and the third fastening hole.

The connection assembly for an in-wheel motor and mobility including the same according to an embodiment of the present invention can connect the in-wheel motor and the mobility main body so that they can be easily assembled and disassembled.

The connection assembly for an in-wheel motor and mobility including the same according to an embodiment of the present invention have the effect of improving the torque transmission power of the motor by preventing rotation of the power shaft of the in-wheel motor.

The connection assembly for an in-wheel motor and mobility including the same according to an embodiment of the present invention can be miniaturized due to the simple power transmission structure of the motor, and has the effect of improving maintainability.

Figure 1 is a cross-sectional view schematically showing a mobility equipped with a connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 2 is a perspective view showing the front of a bracket of a connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 3 is a perspective view showing the rear of a bracket of a connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 4 is a perspective view showing a cross section of a bracket of a connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 5 is a perspective view showing the front of a bracket reinforcement member of a connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 6 is a perspective view showing the rear of the bracket reinforcement member of the connection assembly for an in-wheel motor according to an embodiment of the present invention.
Figure 7 is an exploded perspective view showing the connection assembly for an in-wheel motor mounted on a wheel according to an embodiment of the present invention.
Figure 8 is a perspective view showing the connection assembly for an in-wheel motor mounted on a wheel according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented to sufficiently convey the idea of the present invention to those skilled in the art. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit illustrations of parts unrelated to the description and may slightly exaggerate the sizes of components to aid understanding.

Figure 1 is a cross-sectional view schematically showing a mobility 1 equipped with a connection assembly 10 for an in-wheel motor according to an embodiment of the present invention.

Referring to FIG. 1, the mobility 1 according to an embodiment of the present invention may be provided as a four-wheeled mobility 1 with two wheels 30 at the front and two at the rear. However, mobility (1) may be provided with one front wheel and two rear wheels, or it may be provided as three-wheeled mobility (1) with two front wheels and one rear wheel, and should be understood in the same way.

Mobility 1 may be provided with a rear-wheel drive system in which in-wheel motors 20 are built into only the rear two wheels 30. However, mobility (1) can be provided with a front-wheel drive system and should be understood in the same way.

The mobility 1 may include a body portion 40 with a driver's seat in the center that can be ridden, and a steering device provided in front of the body portion 40 and connected to the front wheel to control the direction of the mobility 1. . Additionally, the body portion 40 may be provided with a pedal connected to a generator, and electricity may be generated through driving of the pedal to drive the in-wheel motor 20, which will be described later.

The body portion 40 of the mobility 1 may be provided with a frame 41 connected to each wheel. The frame 41 may be connected to the connection assembly 10 for an in-wheel motor, which will be described later. Therefore, the frame 41 fixes the body portion 40 of the mobility 1 and the connection assembly 10 for the in-wheel motor and prevents the rotation of the power shaft 21 of the in-wheel motor 20 inserted into the connection assembly. It can be fixed.

In addition, each frame 41 may be provided with a suspension device that improves riding comfort by reducing vibration of the body portion 40 of the mobility 1.

Next, the connection assembly 10 for the in-wheel motor provided in the above-described mobility 1 will be described.

Figure 2 is a perspective view showing the front of the bracket 100 of the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention, and Figure 3 is a connection assembly 10 for an in-wheel motor according to an embodiment of the present invention. This is a perspective view showing the rear of the bracket 100. In addition, Figure 4 is a perspective view showing a cross-section of the bracket 100 of the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention, and Figure 5 is a connection assembly for an in-wheel motor according to an embodiment of the present invention ( This is a perspective view showing the front of the bracket reinforcement member 200 in 10).

2 to 5, the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention is connected to the power shaft 21 of the in-wheel motor 20 and includes a bracket ( It may include 100 and a bracket reinforcement member 200 that is fastened to the bracket 100 to prevent rotation of the bracket 100 and is connected to the frame 41.

The bracket 100 may include a body portion 110 in the shape of a rectangular parallelepiped, each corner of which is rounded. However, the shape of the body portion 110 is not limited to this, and various modifications such as a triangular, pentagonal, or circular cross section are possible and should be understood in the same way.

A plurality of first fastening holes 111 may be provided on the first surface (F) of the body portion 110.

Specifically, the first fastening hole 111 may be recessed in the first surface (F) and may be provided symmetrically on both sides about the insertion portion 120, and as shown in the drawing, the insertion portion 120 ) can be provided on each side of the left and right sides. In addition, the first fastening hole 111 is provided in a position corresponding to the second fastening hole 211 of the bracket reinforcement member 200, which will be described later, and can be fastened with a bolt (not shown), and the mobility 1 The frame 41, the bracket reinforcement member 200, and the bracket 100 may be penetrated and fastened by one bolt (not shown).

An insertion portion 120 protruding in a cylindrical shape may be provided on the first surface (F) of the body portion 110.

The insertion part 120 is provided on the center side of the first surface (F) of the body part 110 and can be inserted into the connection part 220 of the bracket reinforcement member 200, which will be described later. Specifically, the outer peripheral surface is of the connection part 220. It may be provided to correspond to the inner peripheral surface of the through hole 221. However, the shape of the insertion part 120 is not limited to this, and various modifications are possible as long as it can be inserted into the connection part 220 of the bracket reinforcement member 200.

The bracket 100 may include a plurality of ribs 130 protruding along the outer peripheral surface of the insertion portion 120.

Specifically, the ribs 130 may be formed to protrude at regular intervals along the outer peripheral surface of the insertion portion 120 on the first surface F of the body portion 110. Additionally, the rib 130 may be provided in a shape corresponding to the locking groove 230 of the bracket reinforcement member 200, which will be described later, and may be received in the locking groove 230 and supported in the horizontal direction. Accordingly, the bracket 100 and the bracket reinforcement member 200 are prevented from rotating relative to each other in the horizontal direction, and the torque transmitted from the power shaft 21 of the in-wheel motor 20 is dispersed and the rotation of the power shaft 21 is prevented. There is a preventive effect.

The body portion 110 may be provided with a mounting mount 140 that protrudes from one side and connects the braking device and the bracket 100.

Specifically, the mobility 1 may be provided with a disk 50 that rotates with the wheel 30 for braking, and a braking device (not shown) that applies frictional force to the disk 50 to stop it. The braking device may include a pair of brake pads (not shown) that press both sides of the disc, and an actuator (not shown) that operates the brake pads. This braking device may be connected to the mounting mount 140 of the body 110 and installed on the bracket 100, and may be mounted in the groove 141 of the mounting mount 140 to pressurize the disk 50. It can be.

A fixing part 150 that accommodates the end of the power shaft 21 of the in-wheel motor 20 may be provided on the second surface B of the body 110. At this time, the second surface (B) may preferably be provided as a surface located on the opposite side of the first surface (F) of the body portion 110.

The fixing part 150 is recessed on the second surface (B) in a shape corresponding to the power shaft 21 of the in-wheel motor 20 and accommodates the power shaft 21 in the axial direction and is perpendicular to the axial direction. It can be fixed by preventing rotation in one direction. Specifically, the power shaft 21 of the in-wheel motor 20 may have protrusions formed on its outer peripheral surface, for example, may be provided with serrated protrusions whose cross-sections are protruding in a trapezoidal or triangular shape. In addition, the fixing part 150 may also be recessed in the form of a protrusion to accommodate the power shaft 21, and may be provided with, for example, a serrated protrusion whose cross-section protrudes into a trapezoidal or triangular shape.

The fixing part 150 accommodates the power shaft 21 of the in-wheel motor 20 and prevents rotation of the power shaft 21. Therefore, when driving the in-wheel motor 20, the power shaft 21 is fixed and maintained in a stationary state by the connection assembly 10 for the in-wheel motor, and the in-wheel motor 20 accommodates the stator and stator and is connected to the wheel. The body is provided to be rotatable together with the wheel.

The bracket 100 may be provided with a third fastening hole 112 penetrating the insertion part 120 and the fixing part 150.

Specifically, the above-mentioned insertion part 120 may be provided with a cylindrical hollow 121 on the inside, and a third fastening hole 112 of a smaller size than the hollow 121 may be provided at the innermost part of the hollow 121. The insertion part 120 and the fixing part 150 can be formed through. At this time, the bracket 100 is fastened to the power shaft 21 with a bolt (not shown) that simultaneously passes through the hole provided at the center of the power shaft 21 of the in-wheel motor 20 and the third fastening hole 112. and can be fixed.

The bracket reinforcing member 200 includes a plate 210 that is provided to be in close contact with the first surface (F) of the bracket 100, and a through hole 221 that protrudes from the plate 210 and accommodates the insertion portion 120. ) may include a connection portion 220 provided.

The plate 210 is provided in the form of a plate, with a connecting portion 220 having a through hole 221 at the center, and a plurality of second fastening holes 211 at positions corresponding to the first fastening holes 111. can be provided.

The second fastening holes 211 are formed through the plate 210, and may be provided symmetrically on both sides about the connection part 220. As shown in the drawing, there are two on each side of the connection part 220. It can be provided. In addition, the second fastening hole 211 is provided in a position corresponding to the first fastening hole 111 of the above-described bracket 100, and a bolt (not shown) can be fastened to the frame of the mobility 1 ( 41), the bracket reinforcing member 200, and the bracket 100 may be penetrated and fastened by one bolt (not shown).

A connection portion 220 may be provided on the center side of the plate 210, which protrudes and has a through hole 221 for accommodating the insertion portion 120 of the bracket 100.

The connection part 220 can accommodate the insertion part 120 in the through hole 221, and specifically, the inner circumferential surface of the through hole 221 may be provided to correspond to the outer circumferential surface of the insertion part 120. Additionally, the connection portion 220 may be connected to the frame 41 of the mobility 1.

The bracket reinforcing member 200 may include a plurality of locking grooves 230 that are recessed along the outer peripheral surface of the connecting portion 220.

Specifically, the locking groove 230 may be recessed at a position corresponding to the rib 130 to accommodate the rib 130. In addition, the locking groove 230 accommodates the rib 130 and simultaneously supports it in the horizontal direction to prevent the bracket 100 and the bracket reinforcing member 200 from rotating relative to each other in the horizontal direction.

Below, the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention is shown mounted on a wheel.

Figure 7 is an exploded perspective view showing the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention being mounted on a wheel, and Figure 8 is an exploded perspective view showing the connection assembly 10 for an in-wheel motor according to an embodiment of the present invention. This is a perspective view showing it mounted on the wheel.

Referring to Figures 7 and 8, the connection assembly 10 for the in-wheel motor is connected and assembled to the power shaft 21 of the in-wheel motor 20 mounted on the wheel.

Specifically, the power shaft 21 of the in-wheel motor 20 is inserted into the fixing part 150 of the bracket 100, and the insertion part 120 of the bracket 100 is connected to the connecting part 220 of the bracket reinforcement member 200. ) are inserted sequentially.

At this time, the protrusion provided on the power shaft 21 and the protrusion provided on the fixing part 150 of the bracket 100 are engaged with each other to prevent relative rotation, and are tightened by a bolt (not shown) fastened to the third fastening hole 112. The bracket 100 and the power shaft 21 are fixed.

In addition, the rib 130 of the bracket 100 is accommodated in the locking groove 230 provided on the bracket reinforcing member 200 to prevent relative rotation of the bracket 100 and the bracket reinforcing member 200, and the power shaft 21 ) may serve to distribute the torque transmitted from the bracket 100.

In addition, the fastening hole provided in the frame 41 of the mobility 1, the second fastening hole 211 of the bracket reinforcement member 200, and the first fastening hole 111 of the bracket 100 are bolts ( (not shown) can be penetrated and fastened together, and thus even the power shaft 21 fixed to the bracket 100 can be fixed together.

Therefore, the connection assembly 10 for the in-wheel motor fixes the power shaft 21 to the frame 41 of the mobility 1, and includes a bolt passing through the first fastening hole 111 and the second fastening hole 211 ( The wheel can be assembled and disassembled only by assembly and disassembly (not shown).

As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalence of the patent claims to be described.

1: Mobility 10: Connection assembly for in-wheel motor
20: in-wheel motor 21: power shaft
21a: projection 30: wheel
40: body part 41: frame
50: Disk 100: Bracket
110: Body 111: First fastening hole
112: Third fastening hole 120: Insertion part
121: hollow 130: rib
140: Mounting mount 150: Fixing part
150a: Protrusion 200: Bracket reinforcing member
210: Plate 211: Second fastening hole
220: Connection 221: Through hole
230: Locking groove F: 1st side
B: Page 2

Claims (9)

In the connection assembly for an in-wheel motor that connects an in-wheel motor installed on a wheel of a three- or four-wheeled mobility and a frame of the mobility,
A body portion having a plurality of first fastening holes on a first side, an insertion portion protruding in a cylindrical shape on the first side, and a second side portion of the body portion that accommodates an end of the power shaft of the in-wheel motor. A bracket including a fixing part; and
A plate provided to be in close contact with the first surface and having a plurality of second fastening holes at positions corresponding to the first fastening holes, and a connection part protruding from the plate and having a through hole for accommodating the insertion part. A connection assembly for an in-wheel motor including a bracket reinforcing member. According to paragraph 1,
The bracket is
It includes a plurality of ribs protruding along the outer peripheral surface of the insertion portion,
The bracket reinforcement member is
A connection assembly for an in-wheel motor including a plurality of locking grooves that are recessed at positions corresponding to the ribs and are provided to accommodate the ribs. According to paragraph 1,
The body part
A connection assembly for an in-wheel motor including a mounting mount protruding from one side and connecting the brake device and the bracket. According to paragraph 1,
The fixing part
A connection assembly for an in-wheel motor in which the protrusions are recessed in a shape corresponding to the protrusions formed on the end of the in-wheel motor power shaft. According to paragraph 4,
The protrusions of the fixing part are
A connection assembly for an in-wheel motor formed in the form of serrations. According to paragraph 1,
A connection assembly for an in-wheel motor further comprising a bolt simultaneously fastening the first fastening hole of the bracket, the second fastening hole of the bracket reinforcement member, and the frame of the mobility. According to paragraph 1,
The bracket is
A connection assembly for an in-wheel motor including a third fastening hole penetrating the insertion portion and the fixing portion. In clause 7,
The bracket is
A connection assembly for an in-wheel motor that is fastened with a bolt that simultaneously passes through a hole provided at the center of the power shaft of the in-wheel motor and the third fastening hole. Mobility including a connection assembly for an in-wheel motor provided by any one of claims 1 to 8.