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KR20140083808A - In wheel driven device with parking-break function - Google Patents

In wheel driven device with parking-break function Download PDF

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Publication number
KR20140083808A
KR20140083808A KR1020120153941A KR20120153941A KR20140083808A KR 20140083808 A KR20140083808 A KR 20140083808A KR 1020120153941 A KR1020120153941 A KR 1020120153941A KR 20120153941 A KR20120153941 A KR 20120153941A KR 20140083808 A KR20140083808 A KR 20140083808A
Authority
KR
South Korea
Prior art keywords
parking
gear
motor
wheel
solenoid
Prior art date
Application number
KR1020120153941A
Other languages
Korean (ko)
Inventor
최문천
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 KR1020120153941A priority Critical patent/KR20140083808A/en
Publication of KR20140083808A publication Critical patent/KR20140083808A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/748—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on electro-magnetic brakes
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/18—Propelling the vehicle
    • B60Y2300/18008—Propelling the vehicle related to particular drive situations
    • B60Y2300/18108—Braking
    • B60Y2300/18141—Braking for parking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/303—Speed sensors

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention discloses an in-wheel drive apparatus to which a parking brake function is applied. An in-wheel driving apparatus to which a parking brake function according to an embodiment of the present invention is applied includes an in-wheel driving apparatus having a motor of a vehicle, the in-wheel driving apparatus including a toothed wheel gear coupled to a rotor shaft of the motor, And a solenoid for moving the parking pawl through the parking rod and the transmission rod, the solenoid being disposed at a predetermined distance from the teeth of the parking gear.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an in-wheel drive device with a parking brake function,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-wheel driving apparatus, and more particularly, to an in-wheel driving apparatus to which a parking brake function capable of preventing the rotation of a wheel by blocking power transmission by an in-

Today, instead of using fossil fuels, automobiles are developing electric vehicles that drive motors using electric energy stored in batteries.

The electric vehicle includes a pure electric vehicle driving a motor using only electric energy stored in a rechargeable battery, a solar battery vehicle driving a motor using a photocell, a fuel cell vehicle driving a motor using a fuel cell using hydrogen fuel, And a hybrid vehicle that uses an engine and a motor by driving an engine using fossil fuel and driving the motor using electricity.

Generally, an in-wheel drive system composed of a motor is a technology used for a vehicle that uses electricity as an electric power source, such as an electric car. The in-wheel drive system is a system in which a wheel is rotated by driving power transmitted through an engine- Is a technique whereby power is delivered directly to the wheel by a motor disposed within the wheel rim.

Therefore, when the in-wheel driving device is applied, the driving and power transmission devices such as the engine, the transmission, and the differential gear can be omitted, thereby reducing the weight of the vehicle and reducing the energy loss during the power transmission process .

However, since the vehicle equipped with the in-wheel driving device is applied only with the structure for transmitting the power, when the vehicle is parked, the power can be unintentionally transmitted by the rotation of the motor or the gear of the decelerator. There is a need for a structure capable of preventing the rotation of the wheels by shutting off the power transmission by the rotation of the motor or the decelerator.

Embodiments of the present invention relate to an in-wheel driving apparatus to which a parking brake function is applied to a vehicle to which an in-wheel driving apparatus is applied and which can essentially shut off the rotation of a wheel by a motor and a speed reducer of the in-wheel driving apparatus when the vehicle is parked.

According to an embodiment of the present invention, there is provided an in-wheel driving apparatus including a motor of a vehicle, comprising: a toothed wheel gear coupled to a rotor shaft of the motor; a parking gear coupled coaxially with the toothed wheel gear; An in-wheel driving apparatus having a parking brake function including a parking pole arranged to be spaced apart from a tooth of a gear by a predetermined distance, and a solenoid for moving the parking pole through a transmission rod may be provided.

In this case, the transmission rod may include a wedge whose cross section is smaller toward the parking gear side from the solenoid side, and a blocking ring formed at both sides of the wedge to block movement of the wedge.

The parking pawl may be characterized in that one end is hinged to the motor cover and the other end is engaged with the supporter by an elastic member.

Further, the parking pawl may have an insertion protrusion protruded toward the parking gear.

The apparatus may further include a speed sensor for detecting rotation of the toothed wheel gear.

The embodiments of the present invention can block the rotation of the wheels by a motor and a speed reducer constituted in the in-wheel driving apparatus when the vehicle is applied to the in-wheel driving apparatus, thereby enabling stable parking of the vehicle.

1 is a perspective view schematically showing an in-wheel driving apparatus to which a parking brake function is applied according to an embodiment of the present invention;
2 is a cross-sectional view taken along line AA of Fig.
3 is a schematic view schematically illustrating the inside of an in-wheel driving apparatus to which a parking brake function according to an embodiment of the present invention shown in FIG. 1 is applied.
FIG. 4 is an exploded perspective view showing a combined state of a parking gear and a toothed wheel gear in the in-wheel driving apparatus shown in FIG. 3. FIG.
5A to 5B are operational states schematically showing the operating state of the parking brake function of the in-wheel driving apparatus of FIG.

1 is a perspective view schematically showing an in-wheel driving apparatus to which a parking brake function according to an embodiment of the present invention is applied. 2 is a cross-sectional view taken along line AA of Fig. FIG. 3 is a schematic view showing the inside of an in-wheel drive apparatus to which a parking brake function according to an embodiment of the present invention shown in FIG. 1 is applied. FIG. 4 is an exploded perspective view showing the engaged state of the parking gear 30 and the toothed wheel gear 20, which are configured in the in-wheel driving apparatus shown in FIG.

1 to 4, an in-wheel driving apparatus to which a parking brake function according to an embodiment of the present invention is applied includes a toothed wheel gear 20 mounted on a rotor shaft 10 of an in-wheel motor M, And a parking gear (30) coupled with the wheel gear (20).

The toothed wheel gear 20 is mounted on the rotor shaft 10 of the in-wheel motor M and can be rotated together with the rotation of the motor M in synchronism with the motor M. At this time, a speed sensor 60 may be formed at a position spaced apart from the toothed wheel gear 20 by a predetermined distance. The speed sensor 60 is positioned at a predetermined distance from the teeth of the toothed wheel gear 20 and detects the speed of the vehicle based on the number of rotations and rotation speed of the teeth of the toothed wheel gear 20 .

The parking gear 30 may be coupled to the rotor shaft 10 of the in-wheel motor M coaxially with the toothed wheel gear 20. In this case, in the structure of the parking gear 30, the inner diameter and outer diameter of the parking gear 30 may be the same as those of the tooth wheel gear 20. Or the outer diameter of the parking gear 30 may be formed to be slightly smaller than the outer diameter of the tooth wheel gear 20. The tooth spacing of the parking gear 30 may be spaced apart from the tooth spacing of the tooth wheel gear 20 in order to improve a coupling force with the parking pawl 50 described later.

The parking pawl 50 has a predetermined curvature and is spaced apart from the parking pawl 50 in the direction of the parking gear 30. The parking pawl 50 is spaced apart from the parking pawl 30 by a predetermined distance in the circumferential direction corresponding to the teeth of the parking gear 30, The insertion protrusions 52 may be formed. At this time, the insertion protrusion 52 is inserted and drawn out between the teeth of the parking gear 30 according to the movement of the parking pawl 50, so that the rotation of the parking gear 30 can be interrupted and unblocked.

One end 50a of the parking pole 50 is hinged to the motor cover C and the other end 50b of the parking pole 50 can be coupled to the supporter 44 formed on the motor cover C and the elastic portion 45 . A solenoid 40 for moving the parking pawl 50 may be formed at the other end 50b of the parking pawl 50. The parking pawl 50 is rotatable at a predetermined angle in the direction toward the park gear 30 about the one end 50a coupled with the hinge 51 when a force is transmitted by the solenoid 40, The elastic portion 45 can return to its original position.

The solenoid 40 is formed on the motor cover C and is disposed perpendicular to the parking gear 30 and can be engaged with the transmission rod 41. The transfer rod 41 can be linearly reciprocated by the operation of the solenoid 40 and includes a wedge 42 at one end and a pair of blocking rings 43 for interrupting the movement of the wedge 42 Lt; / RTI >

The wedge 42 is moved forward along the supporter 44 with the transmission rod 41 advanced by the operation of the solenoid 40 to move the parking pawl 50 toward the parking gear 30 So that the area of the cross section decreases from the solenoid 40 side toward the parking gear 30 side. The other end 50b of the parking pawl 50 can naturally move on the outer periphery of the wedge 42 and can be moved toward the parking gear 30 when the transmission rod 41 is advanced.

The wedge 42 is also retracted when the transmission rod 41 is retracted and the other end 50b of the parking pawl 50 can be returned to the original position by the elastic portion 45. [

Hereinafter, the operation of the in-wheel driving apparatus to which the parking brake function according to the above-described embodiment of the present invention is applied will be described.

5A to 5B are operation state diagrams schematically showing the operating state of the parking brake function of the in-wheel driving apparatus of FIG.

5A and 5B, when the solenoid 40 is not operated at the time of normal operation or a simple stop rather than parking, the transmission rod 41 is in a retracted state.

At this time, if the transmission rod 41 is in a retracted state, the wedge 42 formed on the transmission rod 41 is also in a state in which the parking pawl 50 is not applied with force, And is positioned as shown in Fig. 5A by the elastic force of the elastic portion 45 connected to the supporter 44. [

On the other hand, when the driver places the gear of the vehicle in the parking mode when the vehicle is parked, the solenoid 40 is actuated to advance the transfer rod 41.

When the transmission rod 41 advances, the wedge 42 pushes the other end 50b of the parking pawl 50 toward the parking gear 30 side.

The parking pawl 50 is moved toward the parking gear 30 by the wedge 42 and the insertion protrusion 52 formed on the parking pawl 50 is drawn into the teeth of the parking gear 30, . ≪ / RTI >

When the insertion protrusion 52 is drawn between the teeth of the parking gear 30, the motor M is prevented from rotating due to the engagement of the parking gear 30 and the parking pawl 50, You can completely block it.

On the other hand, when the driver changes the gear of the vehicle from the parking mode to the drive mode when the vehicle is in operation, the solenoid 40 is operated to retract the transmission rod 41. When the transmission rod 41 is retracted, The pawl 50 is nipped by the elastic force, thereby enabling normal vehicle operation.

As described above, the in-wheel driving apparatus to which the parking brake function according to the embodiment of the present invention is applied can realize a more secure parking state by completely blocking the rotation of the motor or the decelerator when the vehicle is parked.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Motor rotor shaft 20: Toothed wheel gear
30: parking gear 40: solenoid
41: transmission rod 42: wedge
43: blocking ring 44: supporter
45: elastic portion 50: parking pole
60: Speed sensor
C: Motor cover M: Motor

Claims (5)

1. An in-wheel drive apparatus having a motor of a vehicle,
A toothed wheel gear coupled to a rotor shaft of the motor,
A parking gear coaxially coupled to the toothed wheel gear,
A parking pawl spaced apart from a tooth of the parking gear by a predetermined distance,
And a solenoid for moving the parking pawl through the transmission rod. The method according to claim 1,
The transfer rod
A wedge having a smaller cross section from the solenoid side toward the parking gear side,
And a blocking ring formed on both sides of the wedge to block movement of the wedge. The method according to claim 1,
The parking pawl includes:
A parking brake function is applied in which one end is hinged to the motor cover and the other end is engaged with the supporter by an elastic member. The method according to claim 1,
The parking pawl includes:
And a parking brake function is applied in which an insertion protrusion protruded toward the parking gear side is formed. The method according to claim 1,
And a speed sensor for detecting rotation of the toothed wheel gear.
KR1020120153941A 2012-12-26 2012-12-26 In wheel driven device with parking-break function KR20140083808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120153941A KR20140083808A (en) 2012-12-26 2012-12-26 In wheel driven device with parking-break function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120153941A KR20140083808A (en) 2012-12-26 2012-12-26 In wheel driven device with parking-break function

Publications (1)

Publication Number Publication Date
KR20140083808A true KR20140083808A (en) 2014-07-04

Family

ID=51734167

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120153941A KR20140083808A (en) 2012-12-26 2012-12-26 In wheel driven device with parking-break function

Country Status (1)

Country Link
KR (1) KR20140083808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180132064A (en) * 2016-03-30 2018-12-11 니혼덴산가부시키가이샤 Rotary actuators and robots
CN110266146A (en) * 2019-07-26 2019-09-20 上海中科深江电动车辆有限公司 Electric driver

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180132064A (en) * 2016-03-30 2018-12-11 니혼덴산가부시키가이샤 Rotary actuators and robots
CN109075658A (en) * 2016-03-30 2018-12-21 日本电产株式会社 Revolving actuator and robot
TWI713714B (en) * 2016-03-30 2020-12-21 日商日本電產股份有限公司 Rotary actuator and robot
US11027422B2 (en) 2016-03-30 2021-06-08 Nidec Corporation Rotary actuator and robot
CN110266146A (en) * 2019-07-26 2019-09-20 上海中科深江电动车辆有限公司 Electric driver

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E902 Notification of reason for refusal
E601 Decision to refuse application