KR20140040888A - Motor assembly for in-wheel driven system of vehicle - Google Patents

Motor assembly for in-wheel driven system of vehicle Download PDF

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Publication number
KR20140040888A
KR20140040888A KR1020120107168A KR20120107168A KR20140040888A KR 20140040888 A KR20140040888 A KR 20140040888A KR 1020120107168 A KR1020120107168 A KR 1020120107168A KR 20120107168 A KR20120107168 A KR 20120107168A KR 20140040888 A KR20140040888 A KR 20140040888A
Authority
KR
South Korea
Prior art keywords
spider
motor assembly
bearing portion
vehicle
bearing
Prior art date
Application number
KR1020120107168A
Other languages
Korean (ko)
Inventor
박준성
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020120107168A priority Critical patent/KR20140040888A/en
Publication of KR20140040888A publication Critical patent/KR20140040888A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/165—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

The present invention includes a spider connected to a drive shaft, a bearing portion mounted around the spider, and a boss portion formed along a circumference of the spider to support a side surface of the inner ring of the bearing portion axially. A motor assembly of an in-wheel system, wherein the support surface is inclined helically in an axial direction to provide a motor assembly of an in-wheel system of a vehicle, and after the assembly of the motor assembly is completed by adjusting the pressure of the elastic member. Provides an advantageous effect that can easily reset the preload of the bearing portion.

Description

Motor assembly for in-wheel driven system of vehicle

The present invention relates to a motor assembly of a vehicle in-wheel system, more particularly. A motor assembly of an in-wheel system of a vehicle capable of resetting a preload of a bearing after assembly of the motor assembly is completed.

The in-wheel system of a vehicle means the vehicle system which has a motor in a wheel, and each wheel is directly driven by a motor. 1 shows two bearing portions of a motor assembly of a typical vehicle in-wheel system. The bearing assembly is installed in the motor assembly included in the vehicle in-wheel system. Referring to FIG. 1, two bearing parts A and B may be formed in the motor housing 2. 1 shows a motor cover. Relatively, the first bearing portion A is installed toward the motor cover 1, and the second bearing portion B is installed outside the first bearing portion A. FIG. At this time, it is necessary to set the preload in each bearing part. In order to set the preload, an elastic member such as the wave washer 10 may be provided on the first bearing portion A side.

Referring to FIG. 1, a force such as F of FIG. 1 is generated by the elasticity of the wave washer 10, and this force F presses the outer ring 30 of the first bearing portion A in the axial direction. . And the force (F), as shown by the arrow shown in Figure 1, is transmitted to the spider 80 through the bearing ball 20 and the inner ring 40 of the first bearing portion (A). The force F transmitted to the spider 80 is transmitted to the outer ring 60 via the inner ring 70 and the ball bearing 50 of the second bearing portion B. Through this process, the preload of the first bearing portion A and the second bearing portion B is set.

However, when the preload of the bearing portion is set by the force of the elastic member such as the wave washer 10, the preload of the bearing is greatly influenced by the quality of the elastic member and the assembly tolerance between the parts, so that the appropriate preload is set. There is a problem that is difficult to do. Therefore, the preload can be modified later. After the assembly is completed, it is very difficult to correct the bearing preload of the motor assembly. In case of incomplete preload of the bearing part, not only the vibration problem but also the risk of shortening the life of the motor is great.

Accordingly, the present invention is to solve the above problems, in the motor assembly included in the in-wheel system of the vehicle, the motor assembly of the vehicle in-wheel system that can easily reset the preload of the bearing portion even after the assembly of the motor assembly is completed. Its purpose is to provide.

The present invention for achieving the above object, the spider connected to the drive shaft, the bearing portion mounted around the spider, and the support surface is formed along the circumference of the spider to support the side of the inner ring of the bearing portion in the axial direction A motor assembly of an in-wheel system of a vehicle comprising a formed boss portion, wherein the support surface is formed to be inclined spirally along the axial direction.

Preferably, the inner ring side of the bearing portion may be formed to be inclined spirally along the axial direction to correspond to the support surface.

Preferably, at least one adjust fastening receiving hole is formed in the support surface of the boss portion in the axial direction, and an adjust fastening hole corresponding to the adjust fastening receiving hole may be formed in the inner ring.

Preferably, the adjust coupling receiving hole may be formed spaced apart from each other in the circumferential direction of the boss portion along the support surface.

Preferably, a rotary tool coupling groove may be formed in the inner ring of the bearing part to restrict the inserted rotary tool in the rotational direction of the bearing part.

Preferably, the tool fastening groove may be formed in the concave side of the inner ring.

Another invention for achieving the above object is a spider connected to the drive shaft, a bearing portion mounted around the spider, and a support surface formed along the circumference of the spider to support the side of the inner ring of the bearing portion in the axial direction A motor assembly of an in-wheel system of a vehicle including a boss formed, wherein the support surface is formed to be inclined spirally along the axial direction and the inner ring side of the bearing part is formed to be spirally inclined along the axial direction corresponding to the support surface, It provides a motor assembly of the in-wheel system of the vehicle, characterized in that the rotational force of the bearing portion is converted to the axial movement force of the boss portion and the spider.

According to the motor assembly of the vehicle in-wheel system according to the present invention, by rotating the bearing portion to move the spider connected to the elastic member in the axial direction, by adjusting the degree of pressure of the elastic member to facilitate the bearing even after the assembly of the motor assembly is completed It provides an advantageous effect of resetting the negative preload.

1 shows two bearing portions of a motor assembly of a typical vehicle in-wheel system.
2 is a view showing a spider and the boss of the motor assembly of the vehicle in-wheel system according to an embodiment of the present invention.
3 is an enlarged view of the boss unit illustrated in FIG. 2.
4 is a view showing a bearing of the motor assembly of the vehicle in-wheel system according to an embodiment of the present invention,
5 is a view showing the outer surface of the bearing portion shown in Figure 4,
FIG. 6 is a view illustrating an adjust fastening hole of a bearing part shown in FIG. 4 and a fastening bolt inserted thereto; FIG.
FIG. 7 is a view illustrating a state in which a bearing unit is mounted to the spider and the boss unit illustrated in FIG. 2.
8 is a view showing a state in which the spider moves in the axial direction by rotating the bearing portion in the state of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

The present invention has a technical feature that is configured to adjust the degree of pressing of the elastic member providing a preload to the bearing portion, so that the preload of the bearing portion can be easily reset even after the assembly of the motor assembly included in the in-wheel system of the vehicle is completed. .

2 is a view showing a spider and the boss of the motor assembly of the vehicle in-wheel system according to an embodiment of the present invention, Figure 3 is an enlarged view of the boss shown in FIG.

2 and 3, first, the boss 130 is formed along the circumference of the spider 110. Here, the boss 130 is illustrated separately from the spider 110 according to its shape and function, but the spider 110 and the boss 130 may be formed of a single component.

Spider 110 is an element connected to the drive shaft of the motor, the bearing portion 120 is fitted around it. The boss portion 130 is formed around the spider 110 and has a supporting surface 131 facing in the axial direction. The support surface 131 is a portion which comes into contact with the inner surface 121 of the bearing portion 120 (121a in FIG. 4) when the bearing portion 120 is fitted to the spider 110. At least a portion of the support surface 131 is formed to be inclined spirally along the axial direction. This is a configuration for converting the rotational force of the bearing portion 120 to the axial movement force of the spider 110.

Meanwhile, a plurality of adjust fastening accommodation holes 131a may be formed in the support surface 131 of the boss 130. A fastening bolt (T in FIG. 6) is inserted into the adjust fastening accommodation hole 131a to fix the bearing part 120 and the boss part 130. The adjustment fastening accommodation hole 131a may be formed at predetermined intervals in the circumferential direction of the boss 130 along the support surface 131. In this, the adjustment fastening receiving hole 131a may be formed with a screw tab for coupling with the fastening bolt (T in FIG. 6).

The bearing part 120 is mounted to the spider 110 described above. Figure 4 is a view showing a bearing portion of the motor assembly of the vehicle in-wheel system according to an embodiment of the present invention, Figure 5 is a view showing the outer surface of the bearing portion shown in Figure 4, Figure 6 is in Figure 4 Figure 5 shows the adjusting fastening hole and the fastening bolt inserted therein.

4 to 6, in one embodiment, the bearing part 120 may include a bearing ball 123 disposed between the inner ring 121, the outer ring 122, the inner ring 121, and the outer ring 122. Include. Here, the inner surface 121a of the inner ring 121 abuts on the support surface 131 of the boss portion 130 when the bearing portion 120 is mounted on the spider 110. Referring to FIG. 4, at least a portion of the inner side surface 121a which is in contact with the support surface 131 is formed to be inclined spirally along the axial direction to correspond to the support surface 131.

On the other hand, the inner ring 121 may be formed with a pair of fastening holes 121c facing each other. Referring to FIG. 6, the fastening bolt T is screwed into the adjust fastening hole 121c from the outer surface 121b of the inner ring 121 and is inserted or penetrated. The fastening bolt T passing through the fastening hole 121c is coupled to the adjust fastening receiving hole 131a of the boss part 130 to fix the bearing part 120 and the boss part 130.

In addition, a rotary tool coupling groove 121d may be formed on the outer surface 121b of the inner ring 121. In one embodiment, the rotary tool fastening groove 121d is composed of a pair facing each other, it may be formed in the radial direction in the outer surface (121b). When the rotary tool is inserted into the rotary tool fastening groove 121d, the rotary tool is constrained in the rotational direction of the bearing unit 120 to transmit the rotational force of the rotary tool to the bearing unit 120.

FIG. 7 is a view illustrating a state in which a bearing unit is mounted on the spider and the boss unit illustrated in FIG. 2, and FIG. 8 illustrates a state in which the spider moves in the axial direction by rotating the bearing unit in the state of FIG. 7.

Referring to FIG. 7, the bearing part 120 is mounted to the spider 110 and fixed to the boss part 130. It can be seen that the fastening bolt T is coupled to the boss 130 to fix the boss 130 and the bearing 120.

Even after the assembly of the motor assembly is completed, the worker releases the fastening bolt T to release the restraint of the boss portion 130 and the bearing portion 120. The preload of the bearing portion 120 can be reset by inserting the rotary tool into the rotary tool fastening groove 121c to rotate the bearing portion 120. In other words, when the bearing portion 120 is rotated (D1 in FIG. 8) using a rotary tool, as shown in FIG. 8, the inner surface 121a of the inner ring 121 of the bearing portion 120 is bossed. It moves along the inclined support surface 131 of the part 130. At this time. Since the bearing portion 120 is fixed to the motor housing 2, the spider 110 moves relatively in the direction D2 shown in FIG. 8 while the boss portion 130 is pushed.

When the spider 110 moves in the direction D2 of FIG. 8, the size of the space of the wave washer 10 is changed, and the degree of preload of the bearing part 120 is changed.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

110: spider
120: bearing part
121: inner ring
121a: inner side of inner ring
121b: outer surface of the inner ring
121c: Adjust fastening hole
121d: Rotating tool tightening groove
122: outer ring
123: bearing ball
130: boss
131: support surface
131a: Adjust fastening receiving hole

Claims (7)

A spider connected to a drive shaft, a bearing portion mounted around the spider, and a boss portion formed along a circumference of the spider to support a side surface of the inner ring of the bearing portion axially. Motor assembly,
And the support surface is inclined spirally along the axial direction. The method according to claim 1,
The inner ring side of the bearing portion is a motor assembly of the in-wheel system of the vehicle, characterized in that formed in a spiral in the axial direction corresponding to the support surface. 3. The method of claim 2,
At least one adjust fastening receiving hole is formed in the support surface of the boss portion in the axial direction, and an inner fastening hole corresponding to the adjust fastening receiving hole is formed in the inner ring of the motor of the in-wheel system of the vehicle. Assembly. The method of claim 3,
The adjust fastening receiving hole is formed in the motor assembly of the in-wheel system of the vehicle, characterized in that spaced apart from each other in the circumferential direction of the boss portion along the support surface. 5. The method of claim 4,
The inner wheel of the bearing unit is a motor assembly of the in-wheel system of the vehicle, characterized in that the rotary tool engaging groove for restraining the inserted rotary tool in the rotational direction of the bearing unit. 6. The method of claim 5,
The tool engagement groove is a motor assembly of the in-wheel system of the vehicle, characterized in that the concave formed in the side of the inner ring. A spider connected to a drive shaft, a bearing portion mounted around the spider, and a boss portion formed along a circumference of the spider to support a side surface of an inner ring of the bearing portion in an axial direction. Motor assembly,
The support surface is formed to be inclined spirally along the axial direction and the inner ring side of the bearing portion is formed to be inclined spirally along the axial direction to correspond to the support surface, so that the rotational force of the bearing portion moves in the axial direction of the boss portion and the spider. The motor assembly of the in-wheel system of the vehicle, characterized in that being converted to a force.

KR1020120107168A 2012-09-26 2012-09-26 Motor assembly for in-wheel driven system of vehicle KR20140040888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120107168A KR20140040888A (en) 2012-09-26 2012-09-26 Motor assembly for in-wheel driven system of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120107168A KR20140040888A (en) 2012-09-26 2012-09-26 Motor assembly for in-wheel driven system of vehicle

Publications (1)

Publication Number Publication Date
KR20140040888A true KR20140040888A (en) 2014-04-04

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Application Number Title Priority Date Filing Date
KR1020120107168A KR20140040888A (en) 2012-09-26 2012-09-26 Motor assembly for in-wheel driven system of vehicle

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KR (1) KR20140040888A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108321990A (en) * 2018-04-17 2018-07-24 四川安和精密电子电器有限公司 A kind of elastic rotary feeding device and assembling line
CN113472165A (en) * 2021-08-02 2021-10-01 广州小鹏汽车科技有限公司 Assembling method and assembling structure of bearing pressing plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108321990A (en) * 2018-04-17 2018-07-24 四川安和精密电子电器有限公司 A kind of elastic rotary feeding device and assembling line
CN108321990B (en) * 2018-04-17 2023-10-10 四川安和精密电子电器股份有限公司 Elastic rotary feeding device and assembly production line
CN113472165A (en) * 2021-08-02 2021-10-01 广州小鹏汽车科技有限公司 Assembling method and assembling structure of bearing pressing plate

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