KR20170054202A

KR20170054202A - A crank arm of a triple connection structure with a bicycle pedal.

Info

Publication number: KR20170054202A
Application number: KR1020160033834A
Authority: KR
Inventors: 심원보
Original assignee: 심원보
Priority date: 2015-11-09
Filing date: 2016-03-22
Publication date: 2017-05-17
Also published as: WO2017164512A1; JP3220627U

Abstract

Provided is a crank arm of a triple connection structure, which can be used in all conventional bicycles. As a direction of the crank arm is changed in a 360-degree direction, the crank arm is lengthily connected to use a speed, and the crank arm is shortly connected to be used as a fitness bicycle.

Description

A crank arm of a triple connection structure having a bicycle pedal.

In the present invention, when the crank arm of the bicycle pedal is triple connected and the crank arm is extended and pedaled, the longer the length of the lever is, the lighter the lighter the longer the length of the lever is. If you pedal a bicycle by short-circuiting it, it is heavily rotated and consumes a lot of energy of a person's body, so it can be used at all times by adjusting the angle in the direction of 360 degrees.

Here, pedaling, to mean the word,

The most suitable height and radius of rotation for a person to rotate two pedals most efficiently with two feet.

The length of the crank arm of a conventional bicycle means that almost all use 175 millimeters, while in the present invention it is about 250 millimeters, but the turning radius equals 175 millimeters.

Bicycle The crank arm is made of a triple connection structure, and the bicycle pedal is made of a crank arm with a triple connection structure that can be connected together for a long time by connecting it with a short connection.

Since the crank arm of the existing bicycle is too short to utilize the effect of more leverage, when the human is pedaling, the turning radius of the leg is set to a fixed size for everyone, so if the crank arm is lengthened, The fact that there is no further development because it is more inconvenient,

There is also no way for the crank arm to have two functions: shortening the crank arm for fitness and turning it heavily when pedaling.

It is solved with a crank arm with a triple connection structure that can be used while connecting the crank arm to the connecting rod by using the hook, spring, and steel plate pin.

By connecting the crank arm long, the bicycle is lightly rotated, and the speed can be increased higher than now. Conversely, when the crank arm is short connected, the pedal is heavily rotated and can be used for the fitness. Speed and health can be used with the triple connected crank arm. Can be applied to all bikes

1 (A) shows a conventional bicycle crank arm
(B) shows the inventive triple-connected crank arm
Fig. 2 is an exploded view
C in Fig. 3 is a front view, and D is a perspective view
FIG. 4 (C) shows a coupling diagram for increasing the speed
(D) is the coupling for health
5 shows a comparison of the lengths of the crank arms

As you look at the drawings ...

1 is a conventional bicycle crank arm

3 is a plan view of the crank arm of the triple connection structure of the present invention in which the first crank arm 1, the second crank arm 2, the third crank arm 3 are connected in triplicate, And a center point connector (100) connecting the arm to the sprocket of the existing bicycle.

This decomposition,

Referring to FIG. 2,

The engaging keyway 11 (12) in which the engaging piece 13 moves up and down on the groove hole 10 provided in the first crank arm 1, and the engaging piece 13 is engaged with the engaging piece 13 (See D in Fig. 3) which can be fitted with the circular engaging pin 11-1 (12-1) made of a steel plate so as not to fall out of the passages 11 (12) The spring 14 is first inserted into the hooking passage 15 and the hook 13 is inserted into the hook 17 and the hook 17 is inserted into the hook 17 so that the hook 17 is inserted into the groove 10, When the circular connecting rod fixing pin 16-1 is fitted and fixed to the connecting pin pin groove 16 so as to prevent the latch pin 13 from slipping out, the locking pin 13 is urged by the force of the spring 14 between the latching passage 11 and the latching passage The first crank arm 1 and the second crank arm 2 move integrally with each other because the engaging pieces 13 engage with the first and second crank arms 15,

When the second crank arm 2 connected thereto is rotated by 180 degrees, the hook 13 is inserted into the hollow space of the circular hinge pin 11-1 through the connecting rod 17 with a sharp- The second crank arm 2 is rotated by 180 degrees and the latch 13 is rotated about a half turn to come into the latching passage 12 to be pushed by the force of the spring 14 and the latch 13 ) Are fixed to the upper and lower latching passages (12) and (15) in a half-turn manner,

This explains how to connect the first crank arm (1) and the second crank arm (2).

Next, the second crank arm (2) and the third crank arm (3) are explained.

This is the same as the connection method of the first crank arm 1 and the second crank arm 2,

For the purpose of explanation, the number of the third crank arm 3 is fixed so that the third crank arm 3 can be fixed at a necessary angle at a 360 degree rotation angle. Further, the hooking passages 22, 23, 24 The iron pins 22-1, 23-1, 24-1 and 26-1 are additionally provided to secure the entire crankshaft passage 21 (22 (22-1)) to secure the third crank arm 3 at a desired angle The third crank arm 3 can be fixed while being rotated at an arbitrary angle by fixing the crank arm 27 to the first crank arm 23, 24, 25 and 26 one by one.

If you want more angle, you can use additional installation.

When the thread 41 of the existing pedal 4 is inserted into the fixing hole 34, it is possible to use any existing bicycle by completing <I> of FIG.

3 is a cross-

The reference road of the invisible portion of the portion to which the first combined second crank arm is coupled,

<C> is a view for showing the engagement pin passage 15 of the second crank arm 2, the connecting pin pin groove 16 into which the connecting pin fixing pin 16-1 is inserted and the connecting pin 17,

<D> is a portion where the connecting rod 17 is engaged with the groove 10 of the first crank arm 1 and the second crank arm 2 and the grooves 11-1 and 12-1 of the engaging pin (15) in which the spring (14) is inserted into the connecting rod (17).

4,

The angle of the finished product of Fig. 1 (b) is adjusted by rotating the third crank arm (3) using an auger to adjust the length and angle so that it is lightly pedaled, thereby increasing the speed.

In order to utilize the speed, the crank arm is longer than the existing crank arm and is connected to the crank arm so as to lightly pedal a large amount of force of the lever. The pedaling line is connected so as to maintain the same turning radius as that of the conventional crank arm. The overall length of the arm is compared with the conventional crank arm.

4, < RTI ID = 0.0 >

The finished product of Fig. 1 (b) is connected to the center of the center crank arm (100) by rotating the second crank arm (2) and the third crank arm (3) shorter than the existing crank arm.

The securing hole (34) is where you connect the pedal.

In Fig. 5, the length of the crank arm according to the present invention is shown in comparison with a conventional crank arm.

5,

According to the method of connecting the crank arm of this triple connection, as the length of the crank arm becomes longer and shorter,

It is a diagram for showing how the methods used are different from each other.

The length of the existing crank arm and the length of the invention are compared with each other and the turning radius according to the length of the crank arm when using the speed and the crank arm when using the health, Describes the radius of rotation

Explaining the crank arm when using speed,

The second crank arm 2 extended to the speed pedaling line A of the crank arm of the present invention at the pedaling line B where the fixing member 34 into which the pedal 4 of the existing crank arm is inserted is rotated, , The lever principle is applied so that when the pedal is turned slightly, the bicycle can raise the speed,

For health,

The crank arm shortly connected to the fitness line K to the center point connection (100) inside the pedaling line B, which is heavily pedaled when pedaling, is shortened as the length of the lever is shortened and consumes a lot of energy It can be used for health.

The shorter the power is consumed,

Thus, the first crank arm 1, the second crank arm 2 and the third crank arm 3 can be used instantly and repeatedly at any angle and length with a pointed drill.

Although it can be used for all bicycles, in order to demonstrate the true value of the present invention, if the pedal height of the existing bicycle and the distance between the pedal height of the existing bicycle and the ground are increased by 30-50 millimeters, You can change it and you can increase your productivity industrially.

1 .: First crank arm 2: Second crank arm 3: Third crank arm
4 .: Pedal 10.20 .: Groove hole
11,12.15.21.22.23.24.25.26.30 .: Jarring passage
11-1. 12-1. 21-1. 22-1. 23-1. 24-1. 25-1. 26-1 .: Circular latching pin
13.27 .: Hanger 14.28 .: Spring
16.29 .: Connecting pin to groove 16-1. 29-1 .: Circular connection stand fixing pin
17.31 .: Connecting rod 34 .: Fixing hole
41 .: Thread 100: Center point connector
C .: Connections vs. Front D: Assembled section
A .: Speed pedaling line B: Conventional pedaling line
K .: health line

Claims

In a crank arm of a triple connection structure provided with a bicycle pedal,
A crankshaft of a triple connection structure provided with a bicycle pedal, which can be used while connecting and using a long, short, and fixed length by using a hook, a spring, and a circular pin on a crank arm, cancer.