KR20210041717A - Chainless driving device for bicycle and bicycle comprising the same - Google Patents

Abstract

The present invention relates to a chainless drive device for a bicycle and a bicycle including the same, and more particularly, to a bicycle drive device without chains and chainrings, by converting power of vertical motion into rotational motion of a bicycle drive wheel. Moreover, a configuration is relatively simple, so economic feasibility can be secured. In addition, any strain is not provided on knees of a driver, so comfortable driving can be promoted. According to the present invention, regarding a drive device for driving a bicycle, a chainless drive device for a bicycle comprises: a drive wheel; and a driving force transmitting means having one end coupled to each of both sides of the drive wheel as a rotation member, and having the other end to which a pedal is coupled as a rotation member. Here, the driving force transmitting means is provided for converting downward vertical motion of the other end into rotational motion of the drive wheel.

Description

Chainless drive system for bicycle and bicycle including same {CHAINLESS DRIVING DEVICE FOR BICYCLE AND BICYCLE COMPRISING THE SAME}

The present invention relates to a chainless driving device for a bicycle and a bicycle including the same, and more particularly, to provide a new concept bicycle driving device without chains and chainrings by converting the power of vertical movement into rotational movement of the bicycle driving wheel. The present invention relates to a non-chain drive device for a bicycle, which can be made, and is relatively simple in configuration to secure economical efficiency, and that can promote comfortable driving without putting an excessive burden on the driver's knee, and a bicycle including the same.

In general, a conventional bicycle mainly uses a chain to transmit power generated by driving a pedal to a rear wheel.

When driving a general bicycle, the chain rotates by turning the gear in the front by stepping on the pedal, and rotating the gear in the rear connected to the chain rotates the wheel linked to the gear in the rear so that the bicycle moves forward.

A bicycle with a chain is very noisy, and when used for a long period of time, the chain breaks or stretches out of the gear, causing considerable hassle to repair.

In addition, there were inconveniences such as getting clothes caught in the chain while driving the bicycle, or foreign substances (eg, lubricants) on the chain getting on the clothes.

In addition, such a chain-type bicycle has a problem of giving pain to the user's knee due to the structure of rotating the pedal.

Accordingly, a bicycle to which various driving devices of a chainless power system are applied without using a chain has been proposed.

As a related prior art, there is Korean Patent Registration No. 10-0842361 (name of invention: power transmission device, date of announcement: June 30, 2008).

1 is a view showing a power transmission device of a conventional chainless bicycle, the first gear (10') mounted on the pedal shaft (11'); A second tooth 35' mounted on the rear wheel shaft 30'; The first and second teeth 10 ′ and 35 ′ are combined with an intermediary member 20 ′ so that the two teeth are interlocked.

Gears 25' and 27A' are formed at both ends of the intermediate member 20', respectively.

Accordingly, power by rotation of the pedal shaft 11' is transmitted to the rear wheel shaft 30' through the intermediate member 20' to drive the rear wheel.

However, the conventional chainless bicycle power transmission device has a problem in that a large amount of force must be transmitted to the pedal because the structure is complicated, the production cost increases, and the supply price of the product increases, and since the pedal shaft is rotated and transmitted to the rear wheel. .

Republic of Korea Patent Publication 10-0842361 (2008.06.30. Announcement) Republic of Korea Patent Publication 10-0629615 (announced on September 29, 2006) Republic of Korea Patent Publication 10-1651094 (2016.08.26. Announcement) Korean Registered Patent Publication 10-1566579 (announced on November 13, 2015)

Therefore, the present invention for solving the above-described conventional problem, by converting the power of the vertical vertical motion into the rotational motion of the bicycle drive wheel to rotate, it is possible to provide a new concept bicycle driving device without a chain and chainring, An object thereof is to provide a non-chain drive device for a bicycle and a bicycle including the same, which can secure economical efficiency due to a relatively simple configuration, and which can promote comfortable drivability without exerting an excessive amount on the driver's knee.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for achieving the objects and other features of the present invention, there is provided a driving device for driving a bicycle, comprising: a driving wheel; And a driving force transmission means for one end portion is coupled to each of both sides of the drive wheel with a rotating material, and a pedal is coupled to the other end with a rotating material to convert a downward vertical motion of the other end into a rotational motion of the drive wheel. A chainless driving device for a bicycle is provided.

According to another aspect of the present invention, a driving wheel coupled with a rotating material to a wheel frame of a bicycle; A cassette member coupled to the rotating shaft of the driving wheel; An inner ring supported by the cassette member, and an outer ring supported by the wheel frame; And a driving force transmitting means configured to generate a driving force for rotating the driving wheel with one end portion coupled to the cassette member, the other end portion extending in a longitudinal direction of the bicycle, and a downward vertical motion of the other end portion. A chainless driving device for a bicycle is provided.

In the present invention, the cassette member is configured to rotate and drive the driving wheel by receiving the rotational driving force transmitted by the driving force transmission means, and when the rotational driving force is not transmitted, the driving wheel is freely rotated, The driving force transmission means, each of the left and right rotating plates coaxially coupled to the cassette member, and one end is coupled to the outer side of each of the left and right rotating plates, and the other end extends in the longitudinal direction of the bicycle, and the vertical movement of the other end is performed at one end. It may include a left and right motion conversion link assembly configured to be converted into a rotational motion.

In the present invention, the motion conversion link assembly includes: a left and right first link member whose one end is coupled with a rotational material at an eccentric position on the outer surface of the left and right rotation plate, respectively; Left and right second link members having one end rotatably coupled to each of the other ends of the left and right first link members; And left and right third link members having one end fixedly coupled to each of the other ends of the left and right second link members.

In the present invention, one end of the right first link member and the left first link member among the left and right first link members is positioned eccentrically with a predetermined angular distance in the rotation direction, and the second link member and the third link member Is characterized by being combined with an obtuse angle.

In the present invention, when the other end of the right third link member is in the uppermost position, and the other end of the left third link member is in the lowest position, one end of the right first link member is perpendicular to the center of the rotating plate. It is configured to be coupled in a range of 40° to 50° from the 12 o'clock direction based on the extending line passing, and one end of the left first link member is in the range of 220° to 230° in the rotational direction with respect to one end of the right first link member. It characterized in that it is configured to be coupled to.

In the present invention, when the other end of the right third link member is at the highest position and the other end of the left third link member is at the lowest position, the center of the rotating plate and the center of one end of the right first link member are The connecting first imaginary line is characterized in that it is formed to be ahead in the rotational direction than the second imaginary line connecting the center of the rotating plate and the center of one end of the right second link member.

According to another aspect of the present invention, there is provided a bicycle including the chainless drive device according to the present invention.

According to the chainless driving device for a bicycle according to the present invention and a bicycle including the same, the following effects are provided.

First, according to the present invention, since the driving wheel of the bicycle can be rotated by vertical movement of the pedal at a predetermined height up and down, there is an effect that it is possible to promote comfortable driving without putting an excessive burden on the knee.

Second, the present invention has the effect of satisfying the needs of consumers who prefer new products by providing a new concept bicycle driving device without chains and chainrings.

Third, the present invention is relatively simple compared to the configuration of a conventional chain and chainring, and thus there is an effect of securing manufacturability and economy.

The effects of the present invention are not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a view showing a power transmission device of a conventional chainless bicycle,
2 is a perspective view showing a bicycle of an embodiment including a chainless driving device for a bicycle according to the present invention,
3 is a perspective view showing a wheel drive unit employing a chainless driving device for a bicycle according to the present invention,
4 is a perspective view showing the configuration of a chainless driving device for a bicycle according to the present invention,
Figure 5 is a perspective view showing by separating some components of the chainless driving device for a bicycle according to the present invention,
6 is a perspective view showing an exploded view of a chainless driving device for a bicycle according to the present invention;
7 is a perspective view showing states before and after assembly of some components constituting the chainless driving device for a bicycle according to the present invention;
8 is a view for explaining a coupling relationship between link members constituting a motion conversion link assembly in order to generate a driving force in the chainless driving device for a bicycle according to the present invention;
9 is a view showing the driving operation of the chainless driving device for a bicycle according to the present invention, a view showing a state in which the right pedal is in the highest position;
10 is a view showing a driving operation of the chainless driving device for a bicycle according to the present invention, a view showing a state in which the left and right pedals are in the same position, and
11 is a view showing a driving operation of the chainless driving device for a bicycle according to the present invention, a view showing a state in which the left pedal is in the highest position.

Additional objects, features, and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention is capable of various modifications and various embodiments, and the examples described below and shown in the drawings are intended to limit the present invention to specific embodiments. It should be understood as including all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

In addition, terms such as "... unit", "... unit", "... module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the present invention, when it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, throughout the specification of the present application, when a step is positioned "on" or "before" another step, it is not only the case that the step is in a direct time series relationship with the other step, but also the mixing step after each step and Likewise, the order of the two steps includes the same rights as in the case of an indirect time-series relationship that can change the order of the time series.

Hereinafter, a chainless driving device for a bicycle according to the present invention and a bicycle including the same according to the present invention will be described in detail.

The chainless driving device for a bicycle according to the present invention is configured to obtain a rotational force by which a driving wheel of a bicycle rotates by converting a vertical motion of pressing a pedal downward into a rotational motion of a driving wheel (drive wheel) of a bicycle.

Specifically, a chainless driving device for a bicycle according to the present invention includes: a driving wheel configured to be rotatable largely; And a driving force transmission means for converting a downward vertical motion of the other end into a rotational motion of the drive wheel by coupling one end portion with a rotating material to each of both sides of the driving wheel and a pedal coupled to the other end with a rotating material. Can be.

More specifically, a chainless driving device for a bicycle according to the present invention and a bicycle including the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a bicycle of an embodiment including a chainless driving device for a bicycle according to the present invention, and FIG. 3 is a perspective view showing a wheel driving unit employing the chainless driving device for a bicycle according to the present invention. 4 is a perspective view showing a chainless driving device for a bicycle according to the present invention. Figure 5 is a perspective view showing the separate parts of the chainless driving device for a bicycle according to the present invention, Figure 6 is a perspective view showing an exploded view of the chainless driving device for a bicycle according to the present invention. 7 is a perspective view showing a state before and after assembly of some components constituting the chainless driving device for a bicycle according to the present invention, and FIG. 8 is an exercise to generate a driving force in the chainless driving device for a bicycle according to the present invention. It is a figure for demonstrating the coupling relationship between link members which comprise a conversion link assembly.

A chainless driving device for a bicycle according to the present invention (A), as shown in Figs. 2 to 8, a driving wheel 100 that is coupled with a rotating material to the wheel frame F of the bicycle; A cassette member 210 coupled to the rotation shaft 110 of the driving wheel 100 at a center of one side; The inner ring is provided by rotatably supporting the cassette member 210, and the outer ring is a bearing member 220 coupled to the wheel frame F; And each one end is coupled to the cassette member 210, the other end extends in the longitudinal direction of the bicycle (in the front direction in the drawing), and generates a driving force that rotates the driving wheel through a downward vertical motion of the other end. It is configured to include; configured driving force transmission means. A pedal member (P) is provided as a rotating material at the other end of the driving force transmission means.

The driving wheel 100 may be composed of a wheel (wheel) of a conventional bicycle, and may be composed of an electric motor (motor wheel) in the case of an electric bicycle. Since the configuration of the driving wheel 100 may employ a known wheel (wheel) or an electric motor (motor wheel for electric bicycle), a detailed description thereof will be omitted.

In addition, the cassette member 220 is coupled to both ends of the drive shaft 110 of the driving wheel 100, which is coupled to the center of the cassette member 220.

In this case, the cassette member 220 may be composed of a known cassette or a freewheel.

In other words, the cassette member 220 rotates the driving wheel 100 by receiving the rotational driving force transmitted by the driving force transmission means, which will be described in detail below, and at the same time, when the rotational driving force is not transmitted, the driving wheel ( It is configured to allow free rotation of 100).

Next, the driving force transmission means, the left and right rotating plates 310 coaxially coupled to the cassette member 220, and one end is coupled to the outer side of each of the left and right rotating plates 310, and the other end is in the longitudinal direction of the bicycle. It extends and includes a left and right motion conversion link assembly 320 configured to rotate the rotating plate 310 by converting the vertical motion of the other end into a rotational motion of one end.

Each of the left and right rotating plates 310 is coupled while one surface (inner surface) is coupled to the cassette member 220 while covering the bearing member 220 provided interposed between the cassette member 220 so as not to be exposed to the outside. do.

The other surface (outer surface) of the left and right rotating plates 310 is formed with a coupling hole in which one end of one component constituting the motion conversion link assembly 320 to be described later is coupled with a rotating material.

Next, the motion conversion link assembly 320 includes a left and right first link member 321 whose one end is coupled with a rotational material at a position eccentric to the outer surface of the left and right rotation plate 310, respectively, and the left and right first link members Left and right second link members 322 with one end rotatably coupled to each other end of 321, and left and right third link members with one end fixedly coupled to each of the other ends of the left and right second link members 322 ( 323).

In this case, in the coupling relationship between the left and right first link members 321 and the left and right second link members 322 and third link members 323, as shown in Fig. 8, the right first link member and the left first link member 1 The link member is eccentrically coupled to each of the left and right rotating plates 310, the second link member 322 and the third link member 323 are coupled with an obtuse angle, but the other end of the right third link member 323 When in the highest position (highest position) and the other end of the left third link member 323 is in the lowest position (lowest position), one end of the right first link member passes vertically through the center of the rotating plate 310. It is configured to be coupled in a range of 40° to 50° (preferably a position of 45°) from 12 o'clock based on the extension line, and one end of the left first link member is rotated with respect to one end of the right first link member. Is configured to be coupled to 180°, that is, in the range of 220° to 230° (preferably the position of 225°).

At this time, when the other end of the right third link member 323 is in the highest position (highest position) and the other end of the left third link member 323 is in the lowest position (lowest position), the rotating plate 310 ) And the center of one end of the right first link member 321 (blue chain line in FIG. 8A) is the center of the rotating plate 310 and one end of the right second link member 322 The lower side in the rotational direction than the virtual line connecting the center of the negative (that is, the center of the connecting portion of the right first link member 321 and the second link member 322) (the red chain line in Fig. 8B), that is, It is made to be further ahead in the direction of rotation.

Here, the second link member 322 and the third link member 323 may be integrally configured.

Subsequently, the pedal member P is coupled to the other end of the third link member 323 constituting the motion conversion link assembly 320 by a rotating material. The pedal member P may employ a known one, and a description thereof will be omitted.

As described above, since the motion conversion link assembly 320 is configured in the coupling relationship as described above, the downward pressing operation of the other end of the third link member 323 rotates one end of the first link member 321 It is done.

Specifically, the driving operation will be described with further reference to FIGS. 9 to 11.

9 to 11 are views showing the driving operation of the chainless driving device for a bicycle according to the present invention, FIG. 9 is a view showing a state in which the right pedal is in the highest position, and FIG. 10 is a view showing a state in which the left and right pedals are in the same position. It is a diagram showing a state, and FIG. 11 is a diagram showing a state in which the left pedal is in the highest position.

When the position of the other end of the third link member 323 is located at the highest position based on the right motion conversion link assembly, and the one end of the first link member 321 is at approximately 45°, the rotating plate 310 The virtual line connecting the center of the first link member 321 and the center of one end of the right first link member 321 (dashed blue line in FIG. 8A) (referred to as the “first virtual line”) is the center and the right side of the rotating plate 310 An imaginary line connecting the center of one end of the second link member 322 (that is, the center of the connecting portion of the right first link member 321 and the second link member 322) (dashed red line in FIG. 8B) ) (Referred to as the "second virtual line") is not on the same line, and the force is transmitted in the rotational direction of the rotating plate 310 so that the first virtual line is at a slightly lower angle than the second virtual line, and at this time, the first link member The force is transmitted to the position of one end of 321 approximately 225° (the position of the other end of the third link member 323 is the lowest position).

And, the position of the other end of the third link member 323 is located at the lowest position, and after the position of one end of the first link member 321 is approximately 225°, the rotation plate ( There is no force applied to 310), and from this point on, the other end of the third link member 323 is moved up by the pressing force of the third link member 323 of the left motion conversion link assembly.

According to the non-chain drive device for a bicycle and a bicycle including the same according to the present invention as described above, the driving wheel of the bicycle can be rotated and driven by vertical movement of the pedal up and down a predetermined height, so that it does not overwhelm the knees, so it is comfortable to drive. It can meet the needs of consumers who prefer new products by providing a new concept bicycle drive system without chains and chainrings, and is relatively simple compared to the conventional chain and chainring configuration. Thus, there is an advantage of securing the productivity and economy.

Although the above-described embodiments have been described by the limited drawings, a person of ordinary skill in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order from the described method, and/or components such as systems, structures, devices, circuits, etc. described are combined or combined in a form different from the described method, or other components Alternatively, even if substituted or substituted by an equivalent, an appropriate result can be achieved.

The embodiments described in the present specification and the accompanying drawings are merely illustrative of some of the technical ideas included in the present invention. Accordingly, it is obvious that the embodiments disclosed in the present specification are not intended to limit the technical idea of the present disclosure, but to explain the technical idea, and thus the scope of the technical idea of the present disclosure is not limited by these embodiments. Modification examples and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be interpreted as being included in the scope of the present invention.

A: Chainless drive
F: wheel frame
P: no pedal
100: driving wheel
110: rotating shaft
210: cassette member
220: bearing member
310: turntable
320: motion conversion link assembly
321: first link member
322: second link member
323: third link member

Claims (8)

As a driving device for driving a bicycle,
Driving wheels; And
One end is coupled to each of the two sides of the drive wheel with a rotational material, and a pedal is coupled to the other end of the rotational material to convert a downward vertical motion of the other end into a rotational motion of the drive wheel; and a drive force transmission means; felled
Chainless drive system for bicycles.
Driving wheels coupled to the wheel frame of the bicycle by a rotating material;
A cassette member coupled to the rotating shaft of the driving wheel;
An inner ring supported by the cassette member, and an outer ring supported by the wheel frame; And
Each one end is coupled to the cassette member, the other end extends in the longitudinal direction of the bicycle, the driving force transmission means configured to generate a driving force for rotating the drive wheel by vertical movement downward of the other end; felled
Chainless drive system for bicycles.
The method of claim 2,
The cassette member is configured to rotate and drive the drive wheel by receiving the rotational driving force transmitted by the driving force transmitting means, and when the rotational driving force is not transmitted, the driving wheel is configured to freely rotate,
The driving force transmission means, each of the left and right rotating plates coaxially coupled to the cassette member, and one end is coupled to the outer side of each of the left and right rotating plates and the other end extends in the longitudinal direction of the bicycle, and the vertical movement of the other end is performed at one end. It characterized in that it comprises a left and right motion conversion link assembly configured to be converted into a rotational motion
Chainless drive system for bicycles.
The method of claim 3,
The motion conversion link assembly
A left and right first link member having one end coupled to the outer surface of the left and right rotating plates by rotational material, respectively at eccentric positions;
Left and right second link members having one end rotatably coupled to each of the other ends of the left and right first link members; And
Including; left and right third link members having one end fixedly coupled to each of the other ends of the left and right second link members
Chainless drive system for bicycles. The method of claim 4,
One end portion of the right first link member and the left first link member among the left and right first link members is positioned eccentrically with a predetermined angular distance in the rotation direction,
Characterized in that the second link member and the third link member are coupled with an obtuse angle
Chainless drive system for bicycles.
The method of claim 4,
When the other end of the right third link member is in the highest position and the other end of the left third link member is in the lowest position, one end of the right first link member is based on the extension line vertically passing through the center of the rotating plate. It is configured to be coupled in a range of 40° to 50° from the 12 o'clock direction, and one end of the left first link member is configured to be coupled in a range of 220° to 230° in the rotational direction with respect to one end of the right first link member. Characterized by
Chainless drive system for bicycles.
The method of claim 6,
When the other end of the right third link member is in the uppermost position and the other end of the left third link member is in the lowest position, a first virtual connection between the center of the rotating plate and the center of one end of the right first link member The line is characterized in that it is formed to be ahead of the second imaginary line connecting the center of the rotating plate and the center of one end of the right second link member in the rotational direction.
Chainless drive system for bicycles.
A bicycle comprising the chainless drive device according to claim 1 or 2.

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