KR20120116741A - Velocity detecting apparatus for electric bicycle - Google Patents

Velocity detecting apparatus for electric bicycle Download PDF

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Publication number
KR20120116741A
KR20120116741A KR1020110034373A KR20110034373A KR20120116741A KR 20120116741 A KR20120116741 A KR 20120116741A KR 1020110034373 A KR1020110034373 A KR 1020110034373A KR 20110034373 A KR20110034373 A KR 20110034373A KR 20120116741 A KR20120116741 A KR 20120116741A
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South Korea
Prior art keywords
motor
driving wheel
electric bicycle
permanent magnet
hall sensor
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KR1020110034373A
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Korean (ko)
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KR101783048B1 (en
Inventor
김수용
윤홍식
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엘지이노텍 주식회사
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Priority to KR1020110034373A priority Critical patent/KR101783048B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/45—Control or actuating devices therefor
    • B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/80—Accessories, e.g. power sources; Arrangements thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Abstract

PURPOSE: A speed detecting device for an electric bicycle is provided to prevent the damage and abrasion of a hall sensor because a permanent magnet is installed in a driving wheel of an electric bicycle and the hall sensor for detecting the rotation of the permanent magnet is directly connected to the driving wheel inside a motor top cover. CONSTITUTION: A speed detecting device for an electric bicycle comprises a driving wheel(10), a motor(20), a motor cover(30), a hall sensor unit, and a permanent magnet(50). The motor is directly coupled to the driving wheel. The motor cover is coupled to a surface facing the inner surface of the driving wheel of the motor. The hall sensor unit is installed in the motor cover. The permanent magnet faces the hall sensor unit at least one time whenever the driving wheel rotates one revolution.

Description

전기 자전거 속도 감지장치{Velocity detecting apparatus for electric bicycle}Velocity detecting apparatus for electric bicycle

본 발명은 인력 구동계와 전기 구동계가 병렬로 설치되어 인력에 의한 답력(밟는 힘)의 변화에 대응하여 전기 구동계의 출력을 제어하는 전동모터 부착 전기 자전거에 관한 것으로, 보다 상세하게는 전기 자전거에 사용되는 속도 감지장치에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor with an electric motor that is installed in parallel with a manpower drive system and an electric drive system to control the output of the electric drive system in response to a change in stepping force caused by a manpower. It relates to a speed sensing device.

전기 자전거는 탑승자의 인력에 의한 답력과 함께, 구동 휠 측에 설치된 모터와 같은 전기구동계의 출력을 보조 구동수단으로 하여 탑승자가 보다 간편하게 자전거를 운전할 수 있도록 구성된다. 이와 같은 전기 자전거는 전기구동계의 출력 조절 등을 위해, 현재 운행중인 자전거의 속도를 측정 및 감지하는 것이 중요하다. The electric bicycle is configured to allow the occupant to drive the bicycle more easily by using the output of an electric drive system such as a motor installed on the driving wheel side as an auxiliary driving means together with the effort by the occupant's manpower. In such an electric bicycle, it is important to measure and detect the speed of the currently operating bicycle in order to adjust the output of the electric drive system.

일반적으로 전기 자전거의 속도는 모터와 직결된 페달의 회전속도를 감지하여, 이를 이용하여 자전거의 운행속도를 감지한다. 그런데, 탑승자는 항상 자전거의 페달을 돌리지 않으며, 특히 내리막길 주행 시에는, 페달을 돌리지 않고 멈추는 경우가 많으므로, 자전거 페달의 회전수 측정으로는 정확한 자전거의 운행 속도를 산출하기 어렵다.In general, the speed of the electric bicycle detects the rotational speed of the pedal directly connected to the motor, and detects the running speed of the bicycle using this. By the way, the occupant does not always turn the pedal of the bicycle, especially when driving downhill, and often stops without turning the pedal, it is difficult to calculate the exact running speed of the bicycle by measuring the rotation speed of the bicycle pedal.

이러한 문제점을 해결하고자, 자전거 바퀴 자체에 센서를 부착하여 바퀴의 회전수를 직접 측정하는 방법도 제안된 바 있다. 그러나, 자전거 바퀴와 같이 외부에 노출된 위치에 센서를 배치할 경우, 센서 자체가 마모되거나 외부 충격 등에 의해 센서가 쉽게 고장 날 수 있는 문제가 있다.
In order to solve this problem, a method of directly measuring the number of revolutions of the wheel by attaching a sensor to the bicycle wheel itself has been proposed. However, when the sensor is disposed at a location exposed to the outside, such as a bicycle wheel, there is a problem that the sensor itself may be worn out or the sensor may be easily broken due to an external shock.

본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로, 신뢰성 높은 전기 자전거 운행속도를 측정할 수 있으며, 내마모성 및 내구성이 우수한 전기 자전거 속도 감지장치를 제공하는데 그 목적이 있다.
The present invention has been made in view of the above problems, it is possible to measure the reliable driving speed of the electric bicycle, and an object of the present invention is to provide an electric bicycle speed sensor excellent in wear resistance and durability.

상기와 같은 목적을 달성하기 위한 본 발명에 의한 전기 자전거의 속도 감지장치는, 전기 자전거의 구동 휠; 상기 구동 휠에 직접 결합되는 모터; 상기 모터의 구동 휠의 내측면과 마주보는 면에 결합되는 모터 커버; 및 상기 모터 커버에 설치되는 홀 센서 유닛; 및 상기 구동 휠의 1 회전 시 상기 홀 센서 유닛과 적어도 1회 마주볼 수 있도록, 상기 구동 휠에 고정된 영구자석; 을 포함하는 것을 특징으로 한다.Speed sensing device for an electric bicycle according to the present invention for achieving the above object, the drive wheel of the electric bicycle; A motor coupled directly to the drive wheel; A motor cover coupled to a surface facing an inner surface of the driving wheel of the motor; And a hall sensor unit mounted to the motor cover. And a permanent magnet fixed to the driving wheel so that the at least one facing of the hall sensor unit may be encountered during one rotation of the driving wheel. And a control unit.

본 발명의 바람직한 실시예에 따르면, 상기 영구자석은, 외부에 노출되지 않도록 상기 구동 휠의 내측면에 설치되고, 상기 홀 센서 유닛은 상기 영구자석과 마주보는 위치에 배치되는 것이 바람직하다.According to a preferred embodiment of the present invention, the permanent magnet is installed on the inner surface of the drive wheel so as not to be exposed to the outside, the hall sensor unit is preferably disposed in a position facing the permanent magnet.

상기 구동 휠은, 상기 모터가 내부에 수용되는 모터 안착부가 마련되는 것이 바람직하다.
Preferably, the driving wheel is provided with a motor seating portion in which the motor is accommodated.

이상과 같은 본 발명에 의하면, 전기 자전거의 구동 휠에 영구자석을 설치하고, 이 영구자석의 회전을 감지할 수 있는 홀 센서를 상기 구동 휠과 직접 연결되면서 외부로 노출되지 않는 모터 탑 커버 내측에 배치하므로, 홀 센서의 마모 및 손상을 방지할 수 있어, 보다 신뢰성 높은 전기 자전거의 속도 감지장치를 제공할 수 있다.
According to the present invention as described above, the permanent magnet is installed on the driving wheel of the electric bicycle, the hall sensor that can detect the rotation of the permanent magnet is directly connected to the drive wheel inside the motor top cover that is not exposed to the outside By arranging, it is possible to prevent abrasion and damage of the hall sensor, thereby providing a more reliable electric bicycle speed sensing device.

도 1은 본 발명에 의한 전기 자전거의 속도 감지장치의 분해 사시도, 그리고,
도 2는 도 2의 반대편에서 바라본 분해 사시도 이다.1 is an exploded perspective view of a speed sensor of an electric bicycle according to the present invention, and
FIG. 2 is an exploded perspective view seen from the opposite side of FIG. 2.

이하, 본 발명에 의한 전기 자전거의 속도 감지장치를 첨부된 도면을 참고하여 설명한다.Hereinafter, an apparatus for detecting a speed of an electric bicycle according to the present invention will be described with reference to the accompanying drawings.

도 1 및 도 2는 본 발명에 의한 전기 자전거의 속도 감지장치의 일 예를 개략적으로 도시한 분해 사시도 이다.1 and 2 is an exploded perspective view schematically showing an example of the speed sensing device of the electric bicycle according to the present invention.

도시된 바와 같이, 전기 자전거의 속도 감지장치는, 구동 휠(10), 모터(20), 모터 커버(30), 홀 센서 유닛(40) 및 영구자석(50)을 포함한다.As shown, the speed sensor of the electric bicycle, the driving wheel 10, the motor 20, the motor cover 30, the Hall sensor unit 40 and the permanent magnet 50.

구동 휠(10)은 전기 자전거에 탑승자의 답력과 병행하여 부가되는 모터(20)의 전기동력을 전달받아, 탑승자가 손쉽게 자전거를 운행할 수 있도록 보조 동력을 전달하는 역할을 수행한다. 상기 구동 휠(10)은 미도시된 회전축이 중앙에 결합되며, 내부에 사기 모터(20)가 수납될 수 있도록, 상기 모터(20)의 외주면과 대응되는 형상의 모터 안착부(11)가 마련된다. 상기 구동 휠(10)은 전기 자전거의 후륜에 배치되는 것이 바람직하지만, 이를 한정하는 것은 아니며, 필요에 따라 전륜에 배치되거나, 전륜과 후륜 모두에 배치되는 것도 가능하다.The driving wheel 10 receives the electric power of the motor 20 added in parallel with the footsteps of the occupant to the electric bicycle, and serves to transmit auxiliary power so that the occupant can easily operate the bicycle. The driving wheel 10 has a rotating shaft (not shown) coupled to the center thereof, and a motor seat 11 having a shape corresponding to the outer circumferential surface of the motor 20 is provided so that a fraudulent motor 20 can be accommodated therein. do. The driving wheel 10 is preferably disposed on the rear wheel of the electric bicycle, but is not limited thereto, and may be disposed on the front wheel or the front wheel and the rear wheel as necessary.

모터(20)는 상기 구동 휠(10)에 전기로 발생된 보조 동력을 제공하는 것으로, 일반적으로 BLDC 모터가 사용된다. 전기 자전거에 장착되는 모터는 200 내지 500W의 출력을 가지며, 380 내지 400 RPM 가량의 회전수를 가지도록 마련된다.The motor 20 provides auxiliary power generated by the drive wheel 10 with electricity, and a BLDC motor is generally used. The motor mounted on the electric bicycle has an output of 200 to 500W, and is provided to have a rotation speed of about 380 to 400 RPM.

모터 커버(30)는 상기 모터(20)의 최상측에 결합되어, 상기 모터(20)가 외부에서 유입되는 이물질로 오염되거나, 외부 충격에 의해 고장이 발생하는 것을 방지한다.The motor cover 30 is coupled to the uppermost side of the motor 20 to prevent the motor 20 from being contaminated with foreign matter introduced from the outside or a failure caused by an external impact.

홀 센서 유닛(40)은 상기 모터 커버(30)의 상기 구동 휠의 내측면(12)과 마주보는 면에 설치되고, 상기 홀 센서 유닛(40)과 마주보는 상기 구동 휠의 내측면(12)에는 영구자석(50)이 설치된다.The hall sensor unit 40 is installed on a surface facing the inner surface 12 of the driving wheel of the motor cover 30, and the inner surface 12 of the driving wheel facing the hall sensor unit 40. The permanent magnet 50 is installed.

상기 영구자석(50)은 상기 구동 휠(10)이 1회전 할 경우, 상기 홀 센서 유닛(40)과 1회 마주볼 수 있는 위치에 배치되어, 상기 구동 휠(10)의 1회전을 상기 홀 센서 유닛(40)이 감지할 수 있도록 한다.When the driving wheel 10 rotates once, the permanent magnet 50 is disposed at a position that can face the hall sensor unit 40 once, so that one rotation of the driving wheel 10 is performed in the hole. The sensor unit 40 allows detection.

상기한 바와 같이, 상기 영구자석(50)은, 상기 구동 휠의 내측면(12)에 설치되므로, 외부에 노출되지 않아, 전기 자전거의 운행 중에 외부에서 유입되는 오물에 의해 오염될 우려가 없다. 또한, 외부에 노출되지 않으므로, 외부 충격을 직접 받지 않아, 충격에 의한 손상의 우려 또한 없다.As described above, since the permanent magnet 50 is installed on the inner surface 12 of the drive wheel, the permanent magnet 50 is not exposed to the outside, so that the permanent magnet 50 is not contaminated by dirt introduced from the outside during the operation of the electric bicycle. Moreover, since it is not exposed to the outside, it does not receive an external shock directly, and there is no fear of damage by an impact.

이상과 같은 본 발명에 의한 전기 자전거의 속도 감지장치의 동작을 설명한다.The operation of the speed sensor of the electric bicycle according to the present invention as described above will be described.

구동 휠의 내측면(12)에 설치된 영구자석(50)은 상기 홀 센서 유닛(40)과 대응되는 위치에 배치되므로, 상기 구동 휠(10)이 1회전 하면, 적어도 1회 상기 홀 센서 유닛(40)과 대면한다.Since the permanent magnet 50 installed on the inner surface 12 of the driving wheel is disposed at a position corresponding to the hall sensor unit 40, when the driving wheel 10 rotates once, the hall sensor unit (at least once) Face to face 40).

미도시된 제어부는, 구동 휠(10)의 회전수와 상기 홀 센서 유닛(40)이 상기 영구자석(50)을 감지하는 횟수는 동일하므로, 상기 홀 센서 유닛(40)이 상기 영구자석(50)을 감지할 때, 구동 휠(10)이 1회전 한 것으로 판단할 수 있다.The control unit is not shown, since the rotational speed of the driving wheel 10 and the number of times the Hall sensor unit 40 detects the permanent magnet 50 are the same, the Hall sensor unit 40 is the permanent magnet 50 ), It may be determined that the driving wheel 10 has rotated once.

따라서 전기 자전거의 구동 휠이 탑승자의 인력으로 회전하거나, 상기 모터(20)의 동력에 의해 회전하거나, 전기 자전거가 경사면을 내려가면서 회전하는 것에 상관없이, 항상 전기 자전거의 속도를 신뢰성 높게 산출할 수 있다.Therefore, the speed of the electric bicycle can always be calculated reliably regardless of whether the driving wheel of the electric bicycle rotates by the occupant's manpower, rotates by the power of the motor 20, or the electric bicycle rotates while descending the slope. have.

특히 구동 휠(10)의 회전수를 감지하기 위한 감지수단으로 마련된 영구자석(50)과 홀 센서 유닛(40)이 전기 자전거의 외부에서는 보이지 않는 위치에 배치되므로, 외부 오염물질과 충격에 의한 오손의 우려가 없다.In particular, since the permanent magnet 50 and the hall sensor unit 40, which are provided as a sensing means for detecting the rotation speed of the driving wheel 10, are disposed at a position not visible from the outside of the electric bicycle, contamination by external contaminants and impacts. There is no concern.

앞에서 설명된 본 발명의 일실시예는 본 발명의 기술적 사상을 한정하는 것으로 해석되어서는 아니된다. 본 발명의 보호범위는 청구범위에 기재된 사항에 의하여만 제한되고, 본 발명의 기술분야에서 통상의 지식을 가진 자는 본 발명의 기술적 사상을 다양한 형태로 개량 변경하는 것이 가능하다. 따라서, 이러한 개량 및 변경은 통상의 지식을 가진 자에게 자명한 것인 한 본 발명의 보호범위에 속하게 될 것이다.
One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

10; 구동 휠 20; 모터
30; 모터 커버 40; 홀 센서 유닛
50; 영구자석10; Drive wheel 20; motor
30; Motor cover 40; Hall sensor unit
50; Permanent magnet

Claims (3)

전기 자전거의 구동 휠;
상기 구동 휠에 직접 결합되는 모터;
상기 모터의 구동 휠의 내측면과 마주보는 면에 결합되는 모터 커버; 및
상기 모터 커버에 설치되는 홀 센서 유닛; 및
상기 구동 휠의 1 회전 시 상기 홀 센서 유닛과 적어도 1회 마주볼 수 있도록, 상기 구동 휠에 고정된 영구자석; 을 포함하는 것을 특징으로 하는 전기 자전거의 속도 감지장치.
Drive wheels of electric bicycles;
A motor coupled directly to the drive wheel;
A motor cover coupled to a surface facing an inner surface of the driving wheel of the motor; And
A hall sensor unit mounted to the motor cover; And
A permanent magnet fixed to the driving wheel to face the hall sensor unit at least once when the driving wheel is rotated; Speed sensing device for an electric bicycle comprising a.
제 1 항에 있어서,
상기 영구자석은, 외부에 노출되지 않도록 상기 구동 휠의 내측에 설치되고,
상기 홀 센서 유닛은 상기 영구자석과 마주보는 위치에 배치된 것을 특징으로 하는 전기 자전거의 속도 감지장치.
The method of claim 1,
The permanent magnet is installed inside the drive wheel so as not to be exposed to the outside,
The Hall sensor unit is a speed sensor of the electric bicycle, characterized in that disposed in a position facing the permanent magnet.
제 1 항에 있어서, 상기 구동 휠은,
상기 모터가 내부에 수용되는 모터 안착부가 마련된 것을 특징으로 하는 전기 자전거의 속도 감지장치.The method of claim 1, wherein the driving wheel,
Speed detection device for an electric bicycle, characterized in that the motor seating portion is provided to accommodate the motor therein.
KR1020110034373A 2011-04-13 2011-04-13 Velocity detecting apparatus for electric bicycle KR101783048B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140672A1 (en) * 2018-01-21 2019-07-25 深圳一哥智行科技有限公司 Motor hub structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140672A1 (en) * 2018-01-21 2019-07-25 深圳一哥智行科技有限公司 Motor hub structure

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