KR20050022839A - The bicycle crank of angle form - Google Patents

The bicycle crank of angle form Download PDF

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Publication number
KR20050022839A
KR20050022839A KR1020030061258A KR20030061258A KR20050022839A KR 20050022839 A KR20050022839 A KR 20050022839A KR 1020030061258 A KR1020030061258 A KR 1020030061258A KR 20030061258 A KR20030061258 A KR 20030061258A KR 20050022839 A KR20050022839 A KR 20050022839A
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KR
South Korea
Prior art keywords
crank
crank rod
hub
pedal
angle
Prior art date
Application number
KR1020030061258A
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Korean (ko)
Inventor
이영식
Original Assignee
이영식
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Publication date
Application filed by 이영식 filed Critical 이영식
Priority to KR1020030061258A priority Critical patent/KR20050022839A/en
Publication of KR20050022839A publication Critical patent/KR20050022839A/en

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Classifications

    • 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
    • B62M3/00—Construction of cranks operated by hand or foot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/12—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying rotary motion
    • F16H21/14—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying rotary motion by means of cranks, eccentrics, or like members fixed to one rotary member and guided along tracks on the other
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
    • A63B2022/0611—Particular details or arrangement of cranks
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: A crank rod with a deflection angle of a bicycle is provided to increase the efficiency of foot power and to secure smooth rotational force of a chain gear wheel, by separating a crank hub boss part and a pedal-combining hole part from a vertical central line. CONSTITUTION: In a crank rod(3) with a deflection angle of a bicycle, deflection angles are formed to, a hub approach part and a pedal-combining hole approach part, both end parts of a crank for converting user's foot power of vertical motion into rotary motion of a chain gear. In the hub approach part of the crank rod, a deflection angle of 90 ¯45 degrees of a hub boss central horizon and a crank rod central line is formed in the horizontal direction. In the pedal-combining hole approach part of the crank rod, a deflection angle of 90 degrees of the crank rod central line is formed in the opposite direction of the rotation direction.

Description

자전거의 편의각이 형성된 크랑크로드{THE BICYCLE CRANK OF ANGLE FORM}The crank road with the convenience angle of the bicycle {THE BICYCLE CRANK OF ANGLE FORM}

본 발명은 기존의 I 자형 크랑크를 크랑크허브 부위와 페달결합공 부위의 일정거리 유리된 부위에 편의각을 형성하므로서 탑승자의 족답력이 사장되는 힘점 없이 균일하고 효율적인 회전력을 얻게 된다.The present invention forms a convenient angle at a predetermined distance from the crank hub portion and the pedal coupling hole portion of the existing I-shaped crank, thereby obtaining a uniform and efficient rotational force without the stepping force of the occupant.

기존 I 자형 크랑크의 경우, 크랑크 허브축과 페달결합공의 직선 I 자형 구조에서는 힘의 모멘트가 작용점에 따라 회전반경의 절반부위에서만 효능을 발휘할 뿐 나머지 절반의 회전반경에서는 힘은 거의 제로 상태로 급경사등 저항이 심할 때는 페달의 회전력이 멈추는 현상이 발생 하는등 균일한 회전력을 발휘하지 못하는 문제점이 있었다.In the case of the conventional I-shaped crank, in the straight I-shaped structure of the crank hub shaft and the pedal coupling hole, the moment of force is effective only at half of the radius of rotation, depending on the point of action, and the force is almost zero at the other half of the radius of rotation. When the back resistance is severe, there was a problem that the rotational force of the pedal does not exhibit a uniform rotational force, such as a phenomenon occurs.

이는 크랑크로드가 체인기어 허브보스에 수직으로 고정되어 족답력을 원활하게 회전운동으로 전환시키지 못한 문제가 있다.This is because the crank rod is vertically fixed to the chain gear hub boss has a problem that can not smoothly convert the stepping force to rotational movement.

본 발명은 상기와 같은 문제점을 해소하기 위해 힘의 작용점을 크랑크허브보스부와 페달결합공 부위를 크랑크의 수직 중심선에서 각각 일정거리 유리 설치함으로서 체인 기어휠의 원활한 회전력과 족답력의 효율을 증가 시키는 데에 본 발명의 목적이 있다.The present invention to increase the efficiency of the smooth rotation and stepping force of the chain gear wheel by installing a predetermined distance from the crank hub boss portion and the pedal coupling hole in the vertical center line of the crank, respectively, in order to solve the above problems. There is an object of the present invention.

이와 같은 목적을 달성하기 위해 본 발명은 체인기어 크랑크로드의 크랑크허브보스 부위에서 일정거리 유리되어 있는 교점 B부위에서 크랑크의 회전방향으로 θ˚ 90˚ ∼ 45˚ 사이의 편의각을 형성한 후 크랑크로드를 형성하고 크랑크로드의 페달 결합공 부위에서도 크랑크중심선(C)부위에서 편의각 90˚를 형성한 후 일정거리 유리시켜 페달 결합공을 형성한 특징이 있다.In order to achieve the above object, the present invention cranks after forming a deflection angle between θ ˚ 90 ˚ to 45 ˚ in the direction of crank rotation at the intersection B, which is a certain distance from the crank hub boss portion of the chain gear crank rod. Forming a rod and the pedal coupling hole of the crank rod also has a feature of forming a pedal coupling hole by forming a convenient angle 90˚ at the crank center line (C) portion after a certain distance.

이하 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.

제 2 도는 기존의 I 자형 크랑크의 작동원리로서 크랑크의 허브보스와 페달 결합공이 일직선상으로 형성되어 힘의 모멘트가 작용점에 따라서 균일한 회전력을 얻지 못해서 회전운동의 불균형을 초래 했다.2 is a principle of operation of the conventional I-shaped crank, the crank hub boss and the pedal coupling hole are formed in a straight line, and thus the moment of force fails to obtain a uniform rotational force according to the working point, resulting in an unbalanced rotational motion.

제 3 도는 본 발명 크랑크의 작동원리로서 체인기어 크랑크로드의 대단부위 즉 허브부위 근접은 허브보스에서 일정거리 유리되어(교점B),허브보스 중심 수평선과 크랑크로드 중심선(A)과의 편의각 θ˚(90˚ ∼ 45˚)이 크랑크회전방향으로 형성된다.The third turn a certain distance is glass (intersection point B), convenience angle θ of the hub boss center horizontal line and crank rod center line (A) from the great region that is the hub portion close-up of the chain gear crank rod as the operating principle of the present invention crank has a hub boss ˚ (90˚ ~ 45˚) is formed in the crank rotation direction.

이것은 관성모멘트의 저항은 회전축을 잡는 방법에 따라 달라지는 것을 이용하여 관성저항을 순화시켜 작용점에 따라 사장되는 힘점을 없게 하여 균일한 회전력을 얻을 수 있다.This is because the resistance of the moment of inertia is different depending on the method of grasping the rotation axis, so that the inertia resistance can be purified, and there is no dead point depending on the working point to obtain a uniform rotational force.

또한 크랑크로드 소단부위 즉, 페달결합공 부위도 크랑크로드 중심선상의 교점 C부분에서 일정거리 유리되어 대단부(허브부위)의 굽힘방향과는 역방향으로, 크랑크로드 중심선과의 90˚의 편의각을 형성함으로서 힘의 이동방향이 편의각을 형성한ㄴ 부분에서 바뀌는 (운동량의 변화)데에 따른 반작용이 크랑크로드의 안쪽부분으로 작용하여 힘의 모멘트를 집중시키고 이는 회전운동력을 증가 시킨다.In addition, the crank rod small end portion, that is, the pedal engagement hole, is also released at a certain distance from the intersection C portion of the crank rod center line, and is opposite to the bending direction of the large end (hub portion), thereby providing a 90 ° deflection angle with the crank rod center line. As a result of this, the reaction caused by the change of the direction of movement of the force in the biased portion (change of momentum) acts as the inner part of the crank rod, concentrating the moment of force, which increases the rotational momentum.

이상에서 상술한 바와 같이 본 발명은 기존의 I 자형 크랑크의 허브부위와 페달결합공 부위에 편의각을 형성시켜 크랑크의 형태를 탑승자의 상하 운동의 족답력을 체인기어휠의 회전운동으로 원활하게 전환 시켜주는 구조로 변형시켜 자전거의 구동능력을 향상시킨다.As described above, the present invention smoothly converts the stepping force of the occupant's vertical movement into the rotational movement of the chain gear by forming a bias angle at the hub portion and the pedal coupling hole portion of the existing I-shaped crank. It improves the driving ability of the bicycle by transforming it into a structure that makes it.

제 1 도는 본 발명의 크랑크가 착설된 자전거의 전동기구의 평면도1 is a plan view of the electric mechanism of the bicycle mounted crank of the present invention

제 2 도는 기존 I 자형 크랑크의 평면좌표상의 작동원리도2 is a working principle in the plane coordinates of the existing I-shaped crank

제 3 도는 본 발명의 크랑크의 평면좌표상의 작동 원리도3 is a principle of operation of the planar coordinates of the crank of the present invention

제 4 도는 본 발명 크랑크의 사시도4 is a perspective view of the present invention crank

제 5 도는 본 발명 크랑크에 페달이 장착된 좌우 크랑크의 사시도5 is a perspective view of the left and right cranks with pedals mounted on the present invention crank

* 도면의 주요부분에 대한 부호 설명 *Explanation of symbols on the main parts of the drawings

1 : 크랑크 허브보스 2 : 페달결합공1: crank hub boss 2: pedal coupling hole

3 : 크랑크로드 4 : 체인3: crank road 4: chain

5 : 체인기어휠 6 : 페달5: chain gear wheel 6: pedal

7 : 리어후리휠7: rear freewheel

Claims (2)

자전거의 탑승자의 상하운동의 족답력을 체인기어의 회전력으로 전환하기 위한 크랑크의 양말단 부위, 즉 허브 근접부위와 페달결합공 근접부위에 각각 θ˚를 형성 크랑크로드의 허브근접부위는 회전방향으로, 허브보스 중심수평선과 크랑크로드 중심선과의 편의각 θ˚가 90˚ 이하 45˚사이의 편의각이 형성되고 크랑크로드의 페달결합공 근접부위는 회전방향의 역방향으로 크랑크로드 중심선과 편의각 θ˚ 90˚ 직각의 편의각으로 형성된 자전거 체인 크랑크.The crank's sock end to convert the stepping force of the occupant's up and down movement to the rotational force of the chain gear, ie, θ ˚ at the hub and the pedal coupling hole, respectively. A bias angle between the center horizontal line of the hub boss and the center line of the crank rod is formed between the center angle of the crank rod and the angle between the crank rod center line and the deflection angle θ ˚ in the opposite direction of rotation. Bicycle chain cranks formed at a right angle of 90˚. 제 1항의 원리에 의해 형성될 수 있는 Z자형 및 자형 크랑크의 형태.Z-shaped which can be formed by the principle of claim 1 and In the form of a crank.
KR1020030061258A 2003-09-02 2003-09-02 The bicycle crank of angle form KR20050022839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020030061258A KR20050022839A (en) 2003-09-02 2003-09-02 The bicycle crank of angle form

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KR1020030061258A KR20050022839A (en) 2003-09-02 2003-09-02 The bicycle crank of angle form

Related Child Applications (1)

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KR20-2003-0028404U Division KR200342667Y1 (en) 2003-09-03 2003-09-03 The bicycle crank of angle form

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102653304A (en) * 2012-05-28 2012-09-05 李瑶松 Bicycle
CN105620643A (en) * 2016-03-07 2016-06-01 邹维君 Bent-arm bicycle crank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102653304A (en) * 2012-05-28 2012-09-05 李瑶松 Bicycle
CN105620643A (en) * 2016-03-07 2016-06-01 邹维君 Bent-arm bicycle crank

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