KR200468085Y1 - Stepless speed change type chain transmission - Google Patents

Stepless speed change type chain transmission Download PDF

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Publication number
KR200468085Y1
KR200468085Y1 KR2020110004984U KR20110004984U KR200468085Y1 KR 200468085 Y1 KR200468085 Y1 KR 200468085Y1 KR 2020110004984 U KR2020110004984 U KR 2020110004984U KR 20110004984 U KR20110004984 U KR 20110004984U KR 200468085 Y1 KR200468085 Y1 KR 200468085Y1
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KR
South Korea
Prior art keywords
ring body
outer ring
chain
coupling
inner ring
Prior art date
Application number
KR2020110004984U
Other languages
Korean (ko)
Other versions
KR20120008600U (en
Inventor
조영상
Original Assignee
조영상
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 조영상 filed Critical 조영상
Priority to KR2020110004984U priority Critical patent/KR200468085Y1/en
Priority to PCT/KR2012/004492 priority patent/WO2012169796A2/en
Publication of KR20120008600U publication Critical patent/KR20120008600U/en
Application granted granted Critical
Publication of KR200468085Y1 publication Critical patent/KR200468085Y1/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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
    • 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
    • B62M21/00—Transmissions characterised by use of resilient elements therein

Abstract

The present invention includes an outer ring body having a tooth connected to the chain and an inner ring body having a drive shaft at the center, and the outer ring body is displaced according to the tension change of the chain by interconnecting them with a plurality of leaf springs. The present invention relates to a chain transmission that allows a continuously variable transmission.
The configuration includes an annular outer ring body having a plurality of teeth arranged on an outer circumferential surface thereof, the annular outer ring body cooperating with a driven sprocket by a chain connected thereto; An inner ring body disposed inside the outer ring body and having a drive shaft at a center thereof; An annular first engaging portion protruding laterally around an inner circumferential surface of the outer ring body; An annular second engaging portion formed laterally around the outer circumferential surface of the inner ring body; The first and second coupling portion comprises a first corresponding coupling portion in contact with the first coupling portion, a second corresponding coupling portion in contact with the second coupling portion, and a relay portion connecting the first and second corresponding coupling portions. A plurality of leaf springs interposed therebetween and arranged in a vortex form; And coupling means for connecting the first and second mating coupling portions of the leaf springs to the first and second coupling portions, respectively. , ≪ / RTI >
According to the tension change of the chain, the outer ring body is characterized in that the displacement (變 位) relative to the inner ring body.
According to such a configuration, the shift is made as the outer ring body is displaced with respect to the inner ring body. At this time, the connection structure of the outer ring body and the chain is not changed, so that the chain is smoothly driven even during the shift.
In addition, since the outer ring body is supported by a plurality of leaf springs, and the displacement and return, the outer ring body has a simple structure and low production cost.

Description

Stepless variable speed chain drive {STEPLESS SPEED CHANGE TYPE CHAIN TRANSMISSION}

The present invention relates to a continuously variable chain transmission, and more particularly, having an outer ring body having a tooth connected to the chain and an inner ring body having a drive shaft at the center thereof, and interconnecting them with a plurality of leaf springs. The present invention relates to a chain transmission that is continuously shifted by causing the outer ring body to be displaced according to a change in the tension of the chain.

As a technology related to the continuously variable type chain transmission device, Korean Patent Publication No. 2002-0029044 (published on Apr. 17, 2002, hereinafter referred to as 'advanced technology') `` Automatic continuously variable transmission using tension change of the chain '' is presented. have.

The prior art is shown in Figure 1,

"Sub-chain gear 10 is formed a plurality of shaft coupling with the electric link (5, 6),

A plurality of formed to each of the plurality of connecting links (3, 7) by using a plurality of radial link to the circular link (2, 8) and the shaft holder (1) in the radially coupled to interlock,

The shaft holder 1 and the electric link 6 have locking jaws 1a and 5c that can restrain the rotational range of the electric link 5 and 6 coupled to the shaft, respectively.

In addition, the electric link 6 has a locking jaw (6c) that can restrain the rotation range of the ratchet (9),

It relates to an automatic continuously variable transmission having a tension spring (11) in which the sub chain gear (10) changes the pitch circle diameter that the sub chain gears (10) make according to the tension change of the chain (B).

It is a technology that can transmit big power without slipping by using chain and can make shift automatically without any electronic control device.

The prior art is to make the automatic stepless shift by causing the sub-chain gear and the electric link to be squeezed or unfolded in the direction of the center axis of the shaft holder according to the tension change of the chain,

As the pitch circle diameter of a plurality of subchain gears changes during shifting, the position of the chain meshed with each subchain gear should be changed. In this case, the chain cannot be driven smoothly, and the problem of easily detaching from the subchain gear have.

In addition, there is a problem that the structure is complicated, the production cost is increased.

In order to solve the above problems, the continuously variable type chain transmission apparatus according to the present invention,

An annular outer ring body having a plurality of teeth arranged on an outer circumferential surface thereof and cooperating with a driven sprocket by a chain connected thereto;

An inner ring body disposed inside the outer ring body and having a drive shaft at a center thereof;

An annular first engaging portion protruding laterally around an inner circumferential surface of the outer ring body;

An annular second engaging portion formed laterally around the outer circumferential surface of the inner ring body;

The first and second coupling portion comprises a first corresponding coupling portion in contact with the first coupling portion, a second corresponding coupling portion in contact with the second coupling portion, and a relay portion connecting the first and second corresponding coupling portions. A plurality of leaf springs interposed therebetween and arranged in a vortex form; And

Coupling means for connecting the first and second mating coupling portions of the leaf springs to the first and second coupling portions, respectively;

Consisting of,

According to the tension change of the chain, the outer ring body is characterized in that the displacement (變 位) relative to the inner ring body.

And the coupling means

It is characterized in that the rivet is fastened through the first coupling portion and the first corresponding coupling portion and the second coupling portion and the second coupling portion, respectively.

In addition, the relay portion of the leaf spring is characterized by having a zigzag or wave cross-sectional structure when viewed from the side.

In addition, the relay portion of the leaf spring is characterized by having a structure that becomes narrower toward the center when viewed from the front.

Continuously variable type chain transmission according to the present invention,

As the outer ring body is displaced with respect to the inner ring body, the shift is made. In this case, the connection structure of the outer ring body and the chain is not changed, so that the chain is smoothly driven even during the shift.

In addition, since the outer ring body is supported by a plurality of leaf springs, and the displacement and return, the outer ring body has a simple structure and low production cost.

1 is a front and side cross-sectional view showing a conventional continuously variable chain transmission.
Figure 2 is a side configuration diagram showing a state of use of the continuously variable type chain transmission according to the present invention.
Figure 3 is a three-dimensional configuration diagram of a continuously variable chain transmission according to the present invention.
Figure 4 is a side configuration of the continuously variable type chain transmission according to the present invention.
FIG. 5 is a side configuration diagram of the outer ring body displaced in FIG. 4; FIG.
6 and 7 are side configuration diagrams of a continuously variable chain transmission according to another embodiment of the present invention.
8 is a three-dimensional configuration diagram of a continuously variable chain transmission according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, the continuously variable-type chain transmission of the present invention can be mounted on various vehicles requiring a transmission. Accordingly, in this embodiment, a state in which the bicycle is mounted as shown in FIG. 2 is shown as an example. .

2 to 5, the continuously variable type chain transmission apparatus according to the present invention, the outer ring body 100, the inner ring body 200, the first coupling portion 300, the second coupling portion 400, It consists of a leaf spring 500 and the coupling means 600.

Looking at each configuration,

The outer ring body 100 is

It is formed in an annular shape and has a plurality of teeth 110 on an outer circumferential surface thereof.

As shown in FIG. 2, the outer ring body 100 is disposed adjacent to the pedal 710 of the bicycle 700 and the rear wheel of the bicycle 700 by a chain 800 connected to the tooth 110. It is linked with the driven sprocket 900 connected to (720).

In addition, the driven sprocket 900 is formed by combining a plurality of sprockets in multiple stages, and a lower rear derailleur 740 is provided at a lower side thereof.

The inner ring body 200

It has a drive shaft 210 in the center, it is disposed inside the outer ring body (100).

As shown, the crank 730 is connected to both ends of the drive shaft 21, the pedal 710 is coupled to the end of each crank 730.

As a result, the inner ring body 200 receives the rotational force by the pedal 710 and the crank 730.

The first coupling part 300 is

It is made of an annular shape, and is formed in the side protruding around the inner circumferential surface of the outer ring body (100).

The first coupling part 300 is preferably made integral with the outer ring body 100, and may be separately manufactured as necessary and then mounted on the outer ring body 100 using welding or a key. There will be.

The second coupling part 400

It is made in an annular shape, and is formed in the side protruding around the outer circumferential surface of the inner ring body (200).

As in the case of the first coupling portion 300, the second coupling portion 400 is preferably made integral with the inner ring body 200, and if necessary, separately manufactured or welded or keyed. It may be mounted to the inner ring body 200 by using.

The leaf spring 500 is

As interposed in the first and second coupling parts 300 and 400,

As shown in Figure 3,

A first corresponding coupling part 510 in contact with the first coupling part 300,

A second corresponding coupling part 520 in contact with the second coupling part 400, and

The relay unit 530 connecting the first and second corresponding coupling units 510 and 520.

.

In this case, the first and second mating coupling parts 510 and 520 may be in close contact with the inner circumferential surface of the first coupling part 300 and the outer circumferential surface of the second coupling part 400, respectively, at both ends of the leaf spring 500. It is formed by bending.

The leaf spring 500 is provided with a plurality of radially arranged, each is inclined toward the inner side in the direction in which the outer ring body 100 is rotated by the chain 800 when the bicycle 700 is running.

As a result, the leaf spring 500 is arranged to form a vortex around the inner ring body 200, and thus, the leaf spring 500 has no outer force. The support 100 is positioned on the same line as the inner ring body 200.

The coupling means 600 is

The first and second mating portions 510 and 520 of the leaf springs 500 are connected to the first and second mating portions 300 and 400, respectively.

The coupling means 600 is the first coupling portion 300 as shown in view of the material properties and manufacturing convenience of the first and second coupling portion 300, 400 and the leaf spring 500, etc. ) And the first corresponding coupling part 510 and the second coupling part 400 and the second corresponding coupling part 520 are preferably made of rivets which are fastened to each other.

Hereinafter, with reference to Figures 4 and 5 will be described the operating state of the continuously variable chain transmission according to the present invention made of a configuration as described above.

Figure 4 illustrates a state in which the continuously variable type chain transmission according to the present invention is not shifted.

That is, as a case in which the bicycle 700 equipped with the continuously variable-type chain transmission according to the present invention travels on a flat or downhill road,

At this time, the chain 800 may be driven by a relatively small tension (F2) to drive the chain 800 even with a small driving force (F1), so that the outer ring body 100 to the leaf spring (500) It is supported by the inner ring body 200 is located on the same center line.

5 shows a state in which the continuously variable type chain transmission according to the present invention is shifted.

That is, when the bicycle 700 is driving uphill or when the pressure is further applied to the bicycle 700, a greater tension F2 is applied to the chain 800 during driving.

In this case, a larger driving force F1 is required to drive the chain 800. As the driving force F1 increases, the outer ring body 100 overcomes the elastic force of the leaf spring 500 and the inner ring. It is displaced downward with respect to the sieve 200.

As a result, as the outer ring body 100 is displaced downward, the center of the drive shaft 210 connected to the pedal 710 and the distance between the outer ring body 100 and the first connection portion P of the chain 800. Is shortened, thereby reducing the torque required to drive the chain 800, thereby shifting.

Here, the first connection portion P refers to a position where the chain 800 first engages with the tooth 110 of the outer ring body 100 when the chain 800 is driven.

In addition, the leaf spring 500 is to adjust the displacement amount of the outer ring body 100 in accordance with the change in the tension acting on the chain 800, the chain transmission device of the present invention is made continuously variable To be able.

6 to 8, the relay unit 530 of the leaf spring 500 may have various structures as necessary.

6 and 7, the relay unit 530 of the leaf spring 500 has a zigzag or wave cross-sectional structure when viewed from the side.

As a result, the relay unit 530 is bent or stretched more easily, so that the displacement operation of the outer ring body 100 is more smoothly performed.

And, as shown in Figure 8, the relay portion 530 of the leaf spring 500 has a structure that narrows toward the center when viewed from the front,

As a result, the relay unit 530 is bent more easily, so that the displacement operation of the outer ring body 100 is more smoothly performed, and the joint with the first and second mating coupling units 510 and 520 is performed. By evenly dispersing the stress concentrated on the part to improve the durability of the leaf spring (500).

In the above description of the present invention with reference to the accompanying drawings, but with a particular shape and structure of the "variable variable speed gear transmission" mainly described, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications Should be interpreted as falling within the protection scope of the present invention.

100; Paddle
110; Tooth
200; Inner ring
210; driving axle
300; First coupling part
400; Second coupling part
500; Leaf spring
510; 1st counterpart
520; 2nd counterpart
530; The relay unit
600; Coupling means

Claims (4)

An annular outer ring body (100) having a plurality of teeth (110) arranged on an outer circumferential surface thereof and cooperating with a driven sprocket (900) by a chain (800) connected thereto;
An inner ring body 200 disposed inside the outer ring body 100 and having a driving shaft 210 at a center thereof;
An annular first coupling part 300 protruding sidely around an inner circumferential surface of the outer ring body 100;
An annular second coupling part 400 protruding laterally around an outer circumferential surface of the inner ring body 200;
A first corresponding coupling part 510 in contact with the first coupling part 300, a second corresponding coupling part 520 in contact with the second coupling part 400, and the first and second corresponding coupling parts 510. And a plurality of leaf springs 500 which are interposed between the first and second coupling parts 300 and 400, which are composed of a relay part 530 for connecting 520 to form a vortex. ; And
Coupling means 600 for connecting the first and second mating coupling portions 510 and 520 of the leaf springs 500 to the first and second coupling portions 300 and 400, respectively;
, ≪ / RTI >
Continuously variable type chain transmission apparatus, characterized in that the outer ring body 100 is displaced relative to the inner ring body 200 in accordance with the tension change of the chain (800).
The method of claim 1,
The coupling means (600)
Stepless variable speed, characterized in that the rivets are fastened through the first coupling portion 300 and the first corresponding coupling portion 510 and the second coupling portion 400 and the second corresponding coupling portion 520, respectively. Chain transmission.
The method of claim 1,
The relay portion 530 of the leaf spring 500 is a continuously variable chain transmission characterized in that it has a zigzag or wave-shaped cross-sectional structure when viewed from the side.
4. The method according to any one of claims 1 to 3,
The relay portion 530 of the leaf spring 500 is a continuously variable chain transmission characterized in that it has a structure that becomes narrower toward the center when viewed from the front.
KR2020110004984U 2011-06-07 2011-06-07 Stepless speed change type chain transmission KR200468085Y1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR2020110004984U KR200468085Y1 (en) 2011-06-07 2011-06-07 Stepless speed change type chain transmission
PCT/KR2012/004492 WO2012169796A2 (en) 2011-06-07 2012-06-07 Continuously variable transmission chain driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020110004984U KR200468085Y1 (en) 2011-06-07 2011-06-07 Stepless speed change type chain transmission

Publications (2)

Publication Number Publication Date
KR20120008600U KR20120008600U (en) 2012-12-17
KR200468085Y1 true KR200468085Y1 (en) 2013-07-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020110004984U KR200468085Y1 (en) 2011-06-07 2011-06-07 Stepless speed change type chain transmission

Country Status (2)

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KR (1) KR200468085Y1 (en)
WO (1) WO2012169796A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105365994A (en) * 2015-12-28 2016-03-02 张学田 Speed-adjustable multi-gear speed-changing fly wheel
CN108671476B (en) * 2018-03-14 2020-10-02 上海傅利叶智能科技有限公司 Smooth starting rehabilitation training instrument for legs of orthopedic patients

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR840006945A (en) * 1982-12-14 1984-12-04 디일 미첼 Variable ratio gearbox
JPH07165150A (en) * 1993-12-14 1995-06-27 Masayuki Ikeda Continuously variable transmission
JPH09315373A (en) * 1996-05-28 1997-12-09 Tadashi Eguchi Automatic speed change gear for bicycle
KR20010012017A (en) * 1999-07-27 2001-02-15 겐지 미무라 Transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR840006945A (en) * 1982-12-14 1984-12-04 디일 미첼 Variable ratio gearbox
JPH07165150A (en) * 1993-12-14 1995-06-27 Masayuki Ikeda Continuously variable transmission
JPH09315373A (en) * 1996-05-28 1997-12-09 Tadashi Eguchi Automatic speed change gear for bicycle
KR20010012017A (en) * 1999-07-27 2001-02-15 겐지 미무라 Transmission

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Publication number Publication date
KR20120008600U (en) 2012-12-17
WO2012169796A2 (en) 2012-12-13
WO2012169796A3 (en) 2013-02-07

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