KR20090000283U - Turning radius variable apparatus of pedal for bicycle - Google Patents

Turning radius variable apparatus of pedal for bicycle Download PDF

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Publication number
KR20090000283U
KR20090000283U KR2020070011170U KR20070011170U KR20090000283U KR 20090000283 U KR20090000283 U KR 20090000283U KR 2020070011170 U KR2020070011170 U KR 2020070011170U KR 20070011170 U KR20070011170 U KR 20070011170U KR 20090000283 U KR20090000283 U KR 20090000283U
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KR
South Korea
Prior art keywords
link
pedal
winding
connection
rotation radius
Prior art date
Application number
KR2020070011170U
Other languages
Korean (ko)
Inventor
김봉연
Original Assignee
김봉연
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 김봉연 filed Critical 김봉연
Priority to KR2020070011170U priority Critical patent/KR20090000283U/en
Publication of KR20090000283U publication Critical patent/KR20090000283U/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00Construction of cranks operated by hand or foot
    • B62M3/02Construction of cranks operated by hand or foot of adjustable length
    • B62M3/04Construction of cranks operated by hand or foot of adjustable length automatically adjusting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00Rider propulsion of wheeled vehicles
    • B62M1/36Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/02Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio

Abstract

When the forward force is applied to one pedal, the rotation radius of the pedal is increased so that a large rotational force can be obtained with a small force, and the rotation radius of the pedal pedal of the bicycle pedal so that the rotation radius of the other pedal to retreat gradually decreases. .
The rotation radius variable device of the bicycle pedal of the present invention has one end rotatably coupled to the center of the chain sprocket 100 and one end rotatable to the other end of the first link member 151. A second link member 152 connected to the connection link 153 connected to the other end of the connection link 153, the one end of which is pivotally connected to the other end of the connection link 153, and the first link of the first link. The first winding wheel 210 is rotatably coupled to the connecting portion of the member 151 and the connecting link 153, and is rotatably coupled to the connecting portion of the second link member 152 and the connecting link 153. The angle between the first and second link members 151 and 152 with respect to the connecting link 153 by being wound around the second winding wheel 220 and the first winding wheel 210 and the second winding wheel 220. The first movement number for moving the pedal 90 in the direction that the rotation radius of the winding member 200 and the pedal 90 relative to the center of the chain sprocket 100 is minimized in accordance with the change It consists of a.
Bicycle, pedal, pedal, chain, turn radius

Description

Turning radius variable apparatus of pedal for bicycle

1 is a schematic view showing a bicycle employing the subject innovation variable device,

Figure 2 is a perspective view of the subject innovation variable device,

3a and 3b is an operating state of the present invention variable device,

4 and 5 is a schematic view showing the tension adjusting portion of the winding member,

6 is a schematic view showing a variable device according to another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

151 ... first link member 152 ... second link member

153 Connection link 200 ... Winding member

The present invention relates to a variable rotation radius of the bicycle pedal, and more specifically, to increase the rotation radius of the pedal when applying the forward force to one pedal to obtain a large rotation force with a small force, the other pedal to retreat rotation The rotation radius variable device of the bicycle pedal so that the rotation radius of the gradually decreases.

In particular, the present invention relates to a variable rotation radius of the bicycle pedal of the structure simpler than the conventional variable device.

In general, a bicycle has a front wheel and a rear wheel, the rear wheel is connected to the chain sprocket and the chain, and a pair of pedal levers are connected to the central axis of the chain sprocket, thereby applying a rotational force to the pair of pedals alternately to the rear wheel through the chain. Allow forward power to be applied.

Normally, the pedal lever length of the bicycle has a certain length, so the forward force of the bicycle is determined by the force applied by the user. In addition, by adopting a plurality of chain sprockets of different diameters to select the chain sprocket according to the road situation to be able to run with a small force.

In addition, in recent years, a bicycle having a variable length of the pedal lever has been proposed, so that the pedal lever can be operated with a small force when the forward rotation power of the pedal is maximized.

An example of such a bicycle is disclosed in Korean Utility Model Registration No. 02039467. The disclosed variable device can drive the bicycle with minimum physical energy by allowing the eccentric cam to be extended or reduced in length to maximum / minimum as the eccentric cam pushes and pulls the variable rod according to the rotational movement of the pedal. Although the structure is not only complicated by adopting the eccentric cam and the variable rod, the length of the pedal lever member is freely variable between the maximum position and the minimum position when the bicycle is moved without a pair of pedals being operated. There is a problem that noise is generated and moving is cumbersome.

To this end, the applicant of the present invention has registered the rotation radius variable device of the bicycle pedal to solve the above problems through Korean Utility Model Registration No. 0430795.

However, the variable device has a problem in that the structure is complicated by employing a plurality of levers and links, and pants and the like are pinched therebetween while the levers and links are operated.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a variable rotation radius of the bicycle pedal is simplified the structure of the device for varying the rotation radius of the pedal.

Another object of the present invention is to provide a variable rotation radius of the bicycle pedal to prevent the pinch of the pants and the like during operation of the pedal.

The rotation radius variable device of the bicycle pedal of the present invention to achieve the above object in the rotation radius variable device of the bicycle pedal to vary the rotation radius of the pedal with respect to the center of the chain sprocket, one end is coupled to the center of the chain sprocket together A first link member rotated; A connection link having one end rotatably connected to the other end of the first link member; A second link member whose one end is rotatably connected to the other end of the connection link and the pedal is rotatably connected to the other end thereof; A first winding wheel rotatably coupled to the connection portion of the first link member and the connection link; A second winding wheel rotatably coupled to the connection portion of the second link member and the connection link; A winding member wound on the first winding wheel and the second winding wheel and reciprocated according to a change in an angle between the first and second link members with respect to the connection link; And first moving means for moving the pedal in a direction in which the rotation radius of the pedal with respect to the center of the chain sprocket is minimized.

In addition, the first moving means has a first elastic member, one end of which is fixed to one side of the winding member and the other end of which is fixed to the connecting link, one end of which is fixed to the other side of the winding member and the other end is fixed to the connecting link And a second elastic member.

In addition, a protective cover coupled to the first and second link members to protect the winding member, wherein the winding member is a chain and the first and second winding wheels are chain sprockets, and separate one point of the winding member. And a tension adjusting means for adjusting the tension of the winding member by rotating the coupling bolt by coupling the adjusting bolt to the separated end, and engaging the adjusting nut to which the adjusting bolt is screwed. It is characterized in that the further provided.

In addition, the rotation radius variable device of the bicycle pedal of the present invention to achieve the above object in the rotation radius variable device of the bicycle pedal to vary the rotation radius of the pedal with respect to the center of the chain sprocket, one end is coupled to the center of the chain sprocket A first link member which is rotated together; A connection link having one end rotatably connected to the other end of the first link member; A second link member whose one end is rotatably connected to the other end of the connection link and the pedal is rotatably connected to the other end thereof; A first winding wheel rotatably coupled to the connection portion of the first link member and the connection link; A second winding wheel rotatably coupled to the connection portion of the second link member and the connection link; A tension member having one end fixed to the first link member and the other end fixed to the second link member via the first and second winding wheels; And second moving means for moving the pedal in a direction in which the rotation radius of the pedal with respect to the center of the chain sprocket is minimized.

In addition, the second moving means has a third elastic member having one end connected to the first link member and the other end connected to the connection link, and one end connected to the second link member and the other end connected to the link link 153. A stopper for preventing the first link member 151 or the second link member 152 from overlapping is formed in the connection link 153 or the first and second link members 151 and 152. .

According to the feature of the present invention, the rotation radius of the bicycle pedal of the present invention is the rotation radius of the pedal is minimized by the first moving means when the force is not applied to the pedal, the rotation radius of the pedal when applying the force to the pedal The longer it is possible to give a greater forward force with a minimum amount of action. In addition, the variable device has a simpler structure than the conventional one to reduce the cost.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment according to the rotation radius variable device of the bicycle pedal of the present invention in detail.

The rotation radius variable device of the bicycle pedal of the present invention embodiment has a simple structure so that the pedal can be operated with a minimum force by maximizing the rotation radius of the pedal when the pedal is operated.

Referring to Figures 1 to 3b showing a bicycle employing a rotation radius variable device of the present invention embodiment, the variable device 150 of the present invention is coupled to the center of the chain sprocket 100 one end is rotated together A link member 151, a connection link 153 having one end rotatably connected to the other end of the first link member 151, and one end thereof rotatably connected to the other end of the link link 153, and A second winding member 152 rotatably connected to the other end of the pedal 90 and a first winding wheel rotatably coupled to a connection portion of the first link member 151 and the connection link 153; 210, a second winding wheel 220 rotatably coupled to a connection portion of the second link member 152 and the connection link 153, the first winding wheel 210 and the second winding wheel ( A winding part wound around 220 and reciprocated according to a change in the angle between the first and second link members 151 and 152 with respect to the connection link 153. And a (200), a first moving unit which moves the pedal 90 is rotated in a direction that the radius is minimized of the pedal 90 about the center of the chain sprocket 100.

The first moving member has a first elastic member 110, one end of which is fixed to one side of the winding member 200 and the other end of which is fixed to the connecting link 153, and one end of the first moving member to the other side of the winding member 200. The second elastic member 120 is fixed and the other end is fixed to the connection link 153. The first and second elastic members 110 and 120 used springs.

In addition, a protective cover (not shown) coupled to the first and second link members 151 and 152 is provided to protect the winding member 200, and the winding member 200 uses a chain of metal or synthetic resin. Or a rubber belt may be used.

On the other hand, Figure 4 and 5, the rotation radius variable device of the bicycle pedal of the present invention is provided with a tension adjusting means for adjusting the tension of the winding member 200, the tension adjusting means is the winding member ( 200 is a chain and the first and second winding wheels 210 and 220 are chain sprockets, and one end of the winding member 200 is separated to couple the adjusting bolt 201 to the separated end. The other end portion is coupled to the adjustment nut 202, the adjustment bolt 201 is screwed, so that the tension of the winding member 200 is adjusted by the rotation coupling of the adjustment bolt 201. Reference numeral 203 denotes a fixing nut for fixing the adjusting bolt 201 after tension adjustment.

In addition, a stopper 151a which prevents the first link member 151 or the second link member 152 from overlapping the connection link 153 may be connected to the connection link 153 or the first and second link members. 151 and 152.

Such a rotation radius variable device of the bicycle pedal of the present invention, as shown in Figure 3b, when applying the force to the pedal 90, the first and second link members 151, 152 and the connecting link 153 is almost in a straight line As the rotation radius of the pedal 90 is increased, a large forward force can be obtained with a small force. At this time, the winding member 200 rotates in the clockwise direction to extend the first and second elastic members 110 and 120.

In addition, as shown in Figure 3a, when retracting without applying a force to the pedal 90, the first and second elastic members 110, 120 are elastically restored while rotating the winding member 200 in a counterclockwise direction 90 rotates in the direction of decreasing the radius of rotation. In this case, the phenomenon in which the first link member 151 overlaps with the connection link 153 by the stopper 151a is prevented.

If the tension of the winding member 200 is too loose or vice versa during use, it is used by adjusting the adjusting bolt 201.

On the other hand, referring to Figure 6 showing another embodiment of the present invention, which is coupled to the center of the chain sprocket 100, the first link member 151 and the first link member 151 is rotated together A second end of the connection link 153 rotatably connected to the other end of the second end and a second end of the connection link 153 rotatably connected to the other end of the connection link 153. Link member 152, the first winding wheel 210 is rotatably coupled to the connecting portion of the first link member 151 and the link 153, and the link link and the second link member 152 The second winding wheel 220 rotatably coupled to the connection portion 153, and the first and second winding wheels 210 and 220 at one end fixed to the first link member 151. Tension member 400, the other end of which is fixed to the second link member 152 via, and rotation of the pedal 90 about the center of the chain sprocket 100 In a direction to minimize wonder and a second moving unit which moves the pedal 90.

The second moving means has one end connected to the first link member 151 and the other end connected to the third elastic member 130 and one end connected to the second link member 152. A fourth elastic member 140 is connected and the other end is connected to the connection link 153.

In addition, a stopper 151a which prevents the first link member 151 or the second link member 152 from overlapping the connection link 153 may be connected to the connection link 153 or the first and second link members. 151 and 152.

Such a variable device has a similar operation to the above embodiment, the rotation radius is reduced by the restoring force of the third and fourth elastic members 130, 140 when the rotation radius of the pedal 90 is reduced.

The tension member 400 connects the first and second link members 151 and 152 and the connection link 153 to minimize the flow of each member and allow the interaction forces to be linked to enable stable operation.

The rotation radius variable device of the bicycle pedal of the above embodiments has minimized the rotation radius of the pedal 90 as shown in FIGS. 3A and 6 when the bicycle 90 is not operated or when the pedal 90 is not operated. Since it is maintained in a state to prevent the occurrence of friction noise due to the change of the links (151 ~ 153).

On the other hand, the bicycle employing such a variable rotation radius of the bicycle pedal to ensure that the pedal 90 can be operated stably even if a user of different physical conditions, such as leg length.

That is, even if the user uses a different leg length, the rotation radius of the pedal 90 is changed to an arbitrary length so that the user's feet can be in close contact with the pedal 90.

The present invention as described above is not limited to the above embodiments without departing from the spirit and scope of the present application can be carried out by adding a number of modifications.

The rotation radius variable device of the bicycle pedal of the present invention minimizes the rotation radius of the pedal by the first and second moving means when the pedal force is not applied, and maintains the variable rotation radius so that the friction is not generated during the movement or when the pedal is not operated. Prevent noise.

In addition, the radius of rotation of the pedal can be varied to any length so that the user's feet can be in close contact with the pedal according to different users of the leg length to enable a stable pedal operation.

In addition, the structure is simpler than the conventional variable devices to reduce the manufacturing cost, by adopting a cover member to prevent the chain (winding member) to prevent interference with the pants or the like to prevent damage to the pants or body.

Claims (5)

  1. In the rotation radius variable device of the bicycle pedal for varying the rotation radius of the pedal with respect to the center of the chain sprocket,
    A first link member 151 having one end coupled to the center of the chain sprocket 100 and rotating together;
    A connection link 153 having one end rotatably connected to the other end of the first link member 151;
    A second link member 152 having one end rotatably connected to the other end of the connection link 153 and rotatably connected to the other end thereof;
    A first winding wheel 210 rotatably coupled to the connection portion of the first link member 151 and the connection link 153;
    A second winding wheel 220 rotatably coupled to the connection portion of the second link member 152 and the connection link 153;
    It is wound on the first winding wheel 210 and the second winding wheel 220 is reciprocated in accordance with the change of the angle between the first and second link members 151, 152 relative to the connecting link 153. Winding member 200; And
    Rotating radius variable device of the bicycle pedal characterized in that it comprises a first moving means for moving the pedal 90 in a direction in which the rotation radius of the pedal 90 with respect to the center of the chain sprocket 100 is minimized .
  2. According to claim 1, The first moving means is one end of the first elastic member 110 is fixed to one side of the winding member 200 and the other end is fixed to the connecting link 153, one end of the winding member Rotating radius variable device of the bicycle pedal, characterized in that provided with a second elastic member 120 is fixed to the other side of the 200 and the other end is fixed to the connecting link (153).
  3. According to claim 1 or 2, comprising a protective cover coupled to the first and second link members (151, 152) to protect the wound member 200,
    The winding member 200 is a chain and the first and second winding wheels 210 and 220 are chain sprockets, and an adjusting bolt 201 is provided at one end separated by separating a point of the winding member 200. The tension of the winding of the winding member 200 is adjusted by engaging the adjustment nut 202 to which the adjustment bolt 201 is screwed to the other end separated, the rotation bolt of the adjustment bolt 201 Rotation radius variable device of the bicycle pedal, characterized in that the control means is further provided.
  4. In the rotation radius variable device of the bicycle pedal for varying the rotation radius of the pedal with respect to the center of the chain sprocket,
    A first link member 151 having one end coupled to the center of the chain sprocket 100 and rotating together;
    A connection link 153 having one end rotatably connected to the other end of the first link member 151;
    A second link member 152 having one end rotatably connected to the other end of the connection link 153 and the pedal 90 rotatably connected to the other end thereof;
    A first winding wheel 210 rotatably coupled to a connection portion of the first link member 151 and the connection link 153;
    A second winding wheel 220 rotatably coupled to the connection portion of the second link member 152 and the connection link 153;
    The tension member 400 having one end fixed to the second link member 152 via the first and second winding wheels 210 and 220 in a state where the one end is fixed to the first link member 151. ; And
    Variable rotation radius of the bicycle pedal characterized in that it comprises a second moving means for moving the pedal 90 in a direction in which the rotation radius of the pedal 90 with respect to the center of the chain sprocket 100 is minimized .
  5. According to claim 4, The second moving means has a third elastic member 130, one end is connected to the first link member 151 and the other end is connected to the connection link 153, and one end is the second Rotating radius variable device of the bicycle pedal, characterized in that provided with a fourth elastic member 140 is connected to the link member 152 and the other end is connected to the connection link (153).
KR2020070011170U 2007-07-06 2007-07-06 Turning radius variable apparatus of pedal for bicycle KR20090000283U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020070011170U KR20090000283U (en) 2007-07-06 2007-07-06 Turning radius variable apparatus of pedal for bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020070011170U KR20090000283U (en) 2007-07-06 2007-07-06 Turning radius variable apparatus of pedal for bicycle

Publications (1)

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KR20090000283U true KR20090000283U (en) 2009-01-09

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KR2020070011170U KR20090000283U (en) 2007-07-06 2007-07-06 Turning radius variable apparatus of pedal for bicycle

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101704978B1 (en) * 2016-03-22 2017-02-08 심원보 A crank arm of a triple connection structure provided with a bicycle pedal
US10005516B2 (en) 2014-01-13 2018-06-26 Junghun KIM Bicycle driving device
WO2020036272A1 (en) * 2018-08-16 2020-02-20 심원보 Triple-linked crank arm including bicycle pedal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10005516B2 (en) 2014-01-13 2018-06-26 Junghun KIM Bicycle driving device
KR101704978B1 (en) * 2016-03-22 2017-02-08 심원보 A crank arm of a triple connection structure provided with a bicycle pedal
WO2020036272A1 (en) * 2018-08-16 2020-02-20 심원보 Triple-linked crank arm including bicycle pedal

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