Bicycle utilizing belt and pulley as power transmission means

Abstract

The present invention relates to a bicycle utilizing a belt and pulley as a power transmission means, wherein the belt and pulley are used instead of a chain and sprocket as the power transmission means to prevent slippage and minimize power loss by increasing the contact surface between the belt and pulley, thereby improving cost effectiveness and efficiency. According to a specific means of the present invention, a main driving pulley (10) is connected to a pedal (P) about a crankshaft (X), a rear wheel is provided with a driven pulley (20), and grooves (120) are formed in the circumferential surfaces of the main driving pulley (10) and the driven pulley (20) such that a belt (30) can be inserted therein. The main driving pulley (10) and the driven pulley (20) are connected and coupled by the belt (30).

Description

A bicycle that uses a belt and pulley as a means of power transmission

[0001] The present invention relates to a bicycle, and relates to a bicycle that uses a belt and pulley as a power transmission means instead of a chain and a sprocket, thereby increasing the contact surface between the belt and the pulley, thereby preventing slippage and minimizing power loss, thereby improving economy and efficiency.

[0002] Bicycles have been a long-standing mode of transportation. As energy resources become increasingly depleted, signs of a renewed bicycle boom are emerging. Furthermore, bicycles are environmentally friendly and energy-efficient, and their health-promoting benefits through exercise are also key reasons why they will likely remain in use for a long time.

[0003] Additionally, bicycles have been developed in various styles to suit different purposes, such as mountain bikes, hiking bikes, and racing bikes.

[0004] In a bicycle, the hub is the most precise and complex structure as a power transmission structure for the chain and sprocket. The hub assembly is largely composed of the frame, the adapter to which the chain sprocket is mounted, the racer to which this adapter is connected, and the hub axle. When a load is applied to the pedals of the bicycle, power is transmitted to the chain sprocket by the chain, and power is transmitted to the frame on which the wheel is installed through the adapter and racer that are connected in a one-way clutch manner.

[0005] However, conventional bicycles, such as the one mentioned above, move forward by transmitting the rotational force generated by pedaling with human power to the rear wheel through a chain and sprockets, and at this time, lubricants such as grease are used to ensure smooth operation of the chain and sprockets.

[0006] These lubricants are essential for power transmission through chains, which are hinge-connected structures, but in devices that involve direct physical contact, such as bicycles, there is a problem in that the lubricants get on clothes or the body.

[0007] If lubricants get on your clothes, not only is it difficult to wash, but most lubricants are organic chemicals and sometimes contain heavy metals, so they are also seriously harmful to the human body.

[0008] In particular, as bicycles have recently gained popularity as a form of leisure sports, folding bicycles are being widely used for easy transportation and storage. However, the problems of these folding bicycles are more serious, such as chain lubricant getting on clothes during the folding and unfolding process, or the risk of injury due to the chain or sprocket.

[0009] Additionally, there is the problem that the chain frequently comes off the sprocket and that the chain connected to the sprocket must be driven by pedaling, which causes a loss of power.

[0010] [Prior Art Literature]

[0011] [Patent Document]

[0012] (Patent Document 0001) Republic of Korea Patent Registration No. 10-1794517

[0013] (Patent Document 0002) Republic of Korea Patent Registration No. 10-1812105

[0014] (Patent Document 0003) Republic of Korea Patent Publication No. 10-2015-0109299

[0015] (Patent Document 0004) Republic of Korea Patent Registration No. 10-1756475

[0016] Accordingly, the present invention is to solve the above problems,

[0017] First, the purpose is to provide a bicycle that uses a belt and pulley as a power transmission means, which prevents slipping and minimizes power loss by increasing the contact surface between the belt and pulley by using a belt and pulley instead of a chain and sprocket as a power transmission means of the bicycle.

[0018] Next, the purpose is to provide a bicycle that uses a belt and pulley as a power transmission means, in which a driving pulley connected to the pedal and crankshaft and a driven pulley connected to the rear wheel are connected by a single belt, and at the same time, one or more auxiliary pulleys are provided under the driven pulley to improve the tensile strength of the belt, thereby improving the tensile strength or tension strength, thereby improving the contact surface of the belt and the pulley.

[0019] In addition, the purpose of the present invention is to provide a bicycle that uses a belt and pulley as a power transmission means, in which insertion grooves are formed at regular intervals on both sides of the inner surface of the pulley to prevent the belt from coming out of the pulley when the tensile or tension force of the belt increases during driving, and to make the belt more closely adhere to the pulley and expand the contact surface, thereby preventing the belt from coming out of the pulley.

[0020] Specific means to achieve the above purpose are:

[0021] A bicycle that uses a belt and pulley as a power transmission means, wherein a driving pulley (10) is connected to a pedal (P) with a crank shaft (X) as the center, a driven pulley (20) is provided on the rear wheel, and a groove (120) is formed on the circumference of the driving pulley (10) and the driven pulley (20) to allow the insertion of a belt (30), and the driving pulley (10) and the driven pulley (20) are connected and coupled by the belt (30).

[0022] A bicycle using a belt and pulley as a power transmission means, including insertion grooves (121) provided at regular intervals on both inner sides of the above groove (120),

[0023] The above belt (30) is a bicycle that uses a belt and pulley as a power transmission means, which includes a polyester microfiber (300) with rubber (310) wrapping the outer surface thereof, and

[0024] A bicycle using a belt and pulley as a power transmission means, including one or more auxiliary pulleys (200) provided on the lower side of the above-mentioned driven pulley (20),

[0025] A bicycle that uses a belt and pulley as a power transmission means, including the above-mentioned driving pulley (10) and driven pulley (20) having grooves (120) in multiple stages from one side circumference to the other side circumference,

[0026] The outer surface of the belt (30) is coated with 15 to 55 wt% of silicon dioxide, 10 to 15 wt% of toluene (C6H5CH3), 1 to 3 wt% of butanone, 1 to 3 wt% of methyl isobutyl ketone, 10 to 15 wt% of butyl acetate, 5 to 10 wt% of propylene glycol methyl ether acetate, 0 to 1 wt% of ethanol, 1 to 5 wt% of ethanol benzene, 10 to 15 wt% of acrylic polyol, 1 to 4 wt% of polyester polyol, and 5 to 10 wt% of xylene. The above object can be achieved by using a bicycle as a power transmission means, which comprises a belt and pulley, on which a coating agent containing 10 wt% of a rubber and 1 to 4 wt% of other additives is applied, as its structural features.

[0027] The present invention, configured as described above, uses a belt and pulley instead of a chain and sprocket as a power transmission means of a bicycle, and the belt prevents slipping and minimizes power loss by increasing the contact surface of the pulley, and a driving pulley connected to a pedal and a crank shaft and a driven pulley connected to a rear wheel are connected by a single belt, and at the same time, in order to improve the tensile strength of the belt, at least one auxiliary pulley is provided under the driven pulley to improve the tensile strength or tension strength, thereby increasing the contact surface of the belt with the pulley and minimizing power loss, and further, when the tensile strength or tension strength of the belt is increased during driving on both sides of the inner surface of the pulley, insertion grooves are formed at a certain interval on both sides of the inner surface of the pulley so that the belt does not come out of the pulley but comes into closer contact and increases the contact surface, thereby having the effect of preventing the belt from coming out of the pulley.

[0028] Although the present invention has been described and illustrated with specific preferred embodiments as examples, the present invention is not limited to the above embodiments, and various changes and modifications may be made by a person skilled in the art to which the invention pertains within a scope that does not depart from the spirit of the present invention.

[0029] Figure 1 is a perspective view of a bicycle using the belt and pulley of the present invention as a power transmission means.

[0030] Figure 2 is a perspective view of a belt and a pulley separated from each other and an enlarged cross-section of the belt in a bicycle using the belt and pulley of the present invention as a power transmission means.

[0031] Figure 3 is a perspective view and a cross-sectional view of a pulley in a bicycle using the belt and pulley of the present invention as a power transmission means.

[0032] Figure 4 is a cross-sectional view of a pulley in a bicycle using the belt and pulley of the present invention as a power transmission means.

[0033] Figure 5 is a perspective view of the combined state of the pulley and belt in a bicycle using the belt and pulley of the present invention as a power transmission means, and an enlarged cross-sectional view of the pulley part.

[0034] Figure 6 is a cross-sectional view of a pulley of another embodiment of a bicycle using the belt and pulley of the present invention as a power transmission means.

[0035] Fig. 7 is another cross-sectional view of a pulley of another embodiment of Fig. 6 in a bicycle using the belt and pulley of the present invention as a power transmission means.

[0036] Fig. 8 is a cross-sectional view of another embodiment of a bicycle in which an auxiliary pulley is installed using the belt and pulley of the present invention as a power transmission means.

[0037] Explanation of key symbols in the drawing

[0038] 10: Drive pulley 20: Driven pulley

[0039] 30: Belt 120: Home

[0040] 121: Insertion groove 200: Auxiliary pulley

[0041] 300: Ultra-fine polyester fiber 310: Rubber

[0042] B: Bicycle P: Pedal

[0043] X: crankshaft

[0044] A bicycle using a belt and pulley according to the present invention as a power transmission means,

[0045] The driving pulley (10) is connected to the pedal (P) with the crank shaft (X) as the center, and the rear wheel is provided with a driven pulley (20). A groove (120) is formed on the circumference of the driving pulley (10) and the driven pulley (20) to enable the insertion of a belt (30), and the driving pulley (10) and the driven pulley (20) are connected and coupled by the belt (30).

[0046] Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed in this specification are merely exemplified for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may have various changes and may have various forms, and therefore include all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention, and terms or words used in the specification and claims are not to be limited to their usual or dictionary meanings, and should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the fact that the inventor can appropriately define the concept of the term in order to explain his or her own invention in the best way. Therefore, the embodiments described in the specification of the present invention and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of ​​the present invention, and it should be understood that various equivalents and modifications that can replace them may be possible or exist at the time of filing the present invention.

[0047] Additionally, unless otherwise defined in the specification of the present invention, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0048] Hereinafter, a bicycle using the belt and pulley of the present invention as a power transmission means will be described in detail with drawings.

[0049] FIG. 1 is a perspective view of a bicycle that applies the belt and pulley of the present invention as a power transmission means, FIG. 2 is a perspective view of a separated pulley and a belt and an enlarged cross-section of a belt in a bicycle that applies the belt and pulley of the present invention as a power transmission means, FIG. 3 is a perspective view and a cross-sectional view of a main part of a pulley in a bicycle that applies the belt and pulley of the present invention as a power transmission means, FIG. 4 is a cross-sectional view of a pulley in a bicycle that applies the belt and pulley of the present invention as a power transmission means, FIG. 5 is a perspective view of a combined state of a pulley and a belt in a bicycle that applies the belt and pulley of the present invention as a power transmission means, and an enlarged cross-sectional view of a main part of a pulley, FIG. 6 is a cross-sectional view of a pulley of another embodiment in a bicycle that applies the belt and pulley of the present invention as a power transmission means, FIG. 7 is another cross-sectional view of a pulley of another embodiment of FIG. 6 in a bicycle that applies the belt and pulley of the present invention as a power transmission means, and FIG. 8 is a cross-sectional view of a pulley of another embodiment of FIG. 6 in a bicycle that applies the belt and pulley of the present invention as a power transmission means. Another embodiment of the joint cross-section with an auxiliary pulley is shown.

[0050] As can be seen in the drawings, the core of the present invention is that it is driven by a pulley and a belt instead of a conventional chain and sprocket combination, thereby increasing the contact surface between the belt and the pulley, thereby preventing slippage and minimizing power loss, and it solves the inconvenience to the user caused by the lubricant that was essential in the past. Since the inconvenience of the lubricant is described in detail in the background technology of the above invention, it is omitted.

[0051] To be specific,

[0052] The present invention, as shown in FIGS. 1, 2, and 5, is characterized in that a driving pulley (10) is connected to a pedal (P) with a crank shaft (X) as the center, a driven pulley (20) is provided on a rear wheel, and a groove (120) is formed on the circumference of the driving pulley (10) and the driven pulley (20) to enable insertion of a belt (30), so that the driving pulley (10) and the driven pulley (20) are connected and coupled by the belt (30).

[0053] Meanwhile, as illustrated in FIGS. 3 and 4, insertion grooves (121) are provided at regular intervals on both inner sides of the groove (120). The function or role of the insertion grooves (121) is explained as follows: when the user drives the bicycle using the pedals (P), unlike the existing chain, the belt (30) has tensile and tension forces, and thus, as it is elongated in the longitudinal direction, a phenomenon occurs in which the width expands at the same time. By utilizing this phenomenon of width expansion, the expanded width is received or inserted into the insertion grooves (121) as illustrated in FIG. 5, thereby widening and solidifying the contact surface between the belt (30) and the pulleys (10, 20), thereby ultimately preventing the belt (30) from being separated from the pulleys (10, 20).

[0054] Of course, the contact surface between the belt (30) and the pulley (10, 20) is widened, but this increases the propulsion force, allowing the propulsion force of the bicycle to be improved with minimal power, that is, with human power.

[0055] Next, in order to perform the above function, the belt (30) must maintain tensile strength and tension, i.e., strong strength. In order to maximize this strength, as shown in FIGS. 2 and 5, the belt (30) is formed in a form in which a polyester microfiber (300) is wrapped around the outer surface with rubber (310).

[0056] To explain further, the above-mentioned polyester microfiber (300) is a bundle of countless thin polyester threads combined to form a single bundle, and in order to maximize the function and role of the microfiber (300) combined in this way, the outer surface of the countlessly combined microfiber (300) is wrapped with rubber and sealed. In simple terms, it will be easy to understand if you think of it as a form in which the microfiber (300) is filled in an internal empty space like a rubber tube with an empty space.

[0057] The belt (30) formed in this way has high strength by maximizing tensile strength and tension strength, thereby exhibiting the above-described effect.

[0058] Next, in order to maximize the performance of the belt (30) as described above, as shown in Fig. 8, at least one auxiliary pulley (200) is provided below the driven pulley (20).

[0059] This allows the user to propel the bicycle for a longer distance with minimal human power, even if the number of times the user pedals (P) is reduced.

[0060] Meanwhile, as shown in FIGS. 6 and 7, a kind of transmission function is performed in which sprockets are formed in multiple stages from small diameter to large diameter, and when changing gears, the chain moves from the large diameter sprocket to the relatively small diameter sprocket to minimize manpower loss and increase the propulsion of the bicycle, that is, there is a transmission function. In the present invention, FIGS. 6 and 7 perform this function.

[0061] That is, the above-mentioned driving pulley (10) and driven pulley (20) are provided with grooves (120) in multiple stages from one side circumference to the other side circumference, and their specific functions and roles are omitted as they have already been explained in the above-mentioned existing bicycle.

[0062] Particularly preferably, the outer surface of the belt (30) is coated with 15 to 55 wt% of silicon dioxide, 10 to 15 wt% of toluene (C6H5CH3), 1 to 3 wt% of butanone, 1 to 3 wt% of methyl isobutyl ketone, 10 to 15 wt% of butyl acetate, 5 to 10 wt% of propylene glycol methyl ether acetate, 0 to 1 wt% of ethanol, 1 to 5 wt% of ethanol benzene, 10 to 15 wt% of acrylic polyol, 1 to 4 wt% of polyester polyol, and 5 to 10 wt% of xylene. It includes a coating agent applied by mixing 10% by weight of the composition and 1 to 4% by weight of other additives.

[0063] By applying a coating agent in this way, it is possible to prevent safety accidents caused by damage to the belt due to corrosion, deformation, or other chemical changes from harmful substances in the external environment during operation, and also to solve environmental pollution problems caused by fusion with ultraviolet rays and other chemical bonds.

[0064] Preferably, the coating agent comprises a mixture of 8 to 35 wt% of toluene (C6H5CH3), 3 to 5 wt% of butanone, 3 to 5 wt% of methyl isobutyl ketone, 15 to 20 wt% of butyl acetate, 10 to 15 wt% of propylene glycol methyl ether acetate, 3 to 5 wt% of ethanol benzene, 25 to 30 wt% of acrylic polyol, 1 to 3 wt% of polyester polyol, 5 to 8 wt% of xylene, and 0 to 1 wt% of other additives.

[0065] More preferably, the coating agent comprises 1 to 379 wt% of a polymer resin, 2 to 5 wt% of silicon dioxide, 15 to 20 wt% of toluene (C6H5CH3), 2 to 5 wt% of methyl isobutyl ketone, 5 to 10 wt% of butyl acetate, 2 to 5 wt% of propylene glycol methyl ether acetate, 0.1 to 4 wt% of ethanol, 2 to 5 wt% of ethanol benzene, 25 to 30 wt% of acrylic polyol, 3 to 5 wt% of polyester polyol, 3 to 5 wt% of xylene, It comprises a mixture of 3 to 5 wt% of glycidoxypropyltrimethoxysilane.

[0066] Even more preferably, the coating agent is a mixture of 1 to 44 wt% of a plastic resin (Polymerresin), 10 to 15 wt% of toluene (C6H5CH3), 1 to 5 wt% of methyl isobutyl ketone, 10 to 15 wt% of butyl acetate, 1 to 5 wt% of propylene glycol methyl ether acetate, 1 to 5 wt% of ethanol benzene, 30 to 35 wt% of acrylic polyol, 1 to 5 wt% of polyester polyol, 1 to 5 wt% of xylene, and 1 to 9 wt% of glycidoxypropyltrimethoxysilane. It includes that.

[0067] The unexplained symbol B indicates a bicycle.

[0068] The present invention, configured as described above, uses a belt and pulley instead of a chain and sprocket as a power transmission means of a bicycle, and the belt prevents slipping and minimizes power loss by increasing the contact surface of the pulley, and the driving pulley connected to the pedal and the crank shaft and the driven pulley connected to the rear wheel are connected by a single belt, and at the same time, in order to improve the tensile strength of the belt, at least one auxiliary pulley is provided under the driven pulley to improve the tensile strength or tension strength, thereby increasing the contact surface of the belt with the pulley and minimizing power loss, and further, when the tensile strength or tension strength of the belt is increased during driving on both sides of the inner surface of the pulley, insertion grooves are formed at a certain interval on both sides of the inner surface of the pulley so that the belt does not come out of the pulley but is more closely pressed to increase the contact surface, thereby having the effect of preventing the belt from coming out of the pulley.

[0069] Although the present invention has been described with reference to limited embodiments and drawings, it is to be understood that the present invention is not limited to the above embodiments, and that various modifications and variations may be made from the above-described contents by a person having ordinary technical knowledge in the field to which the present invention pertains.

[0070] Therefore, the technical idea of ​​the present invention should be understood by the claims described below, but it is self-evident that all equivalent or equivalent modifications thereof fall within the scope of the technical idea of ​​the present invention.

[0071] As described above, the bicycle using the belt and pulley according to the present invention as a power transmission means uses a belt and pulley instead of a chain and a sprocket as a power transmission means of the bicycle, and the belt prevents slipping and minimizes power loss by increasing the contact surface of the pulley, and the driving pulley connected to the pedal and the crank shaft and the driven pulley connected to the rear wheel are connected by a single belt, and at the same time, in order to improve the tensile strength of the belt, at least one auxiliary pulley is provided under the driven pulley to improve the tensile strength or tension strength, thereby increasing the contact surface of the belt with the pulley and minimizing power loss, so that it is an invention with very high industrial applicability.

Claims

1. A bicycle that uses a belt and pulley as a power transmission means, wherein a driving pulley (10) is connected to a pedal (P) with a crank shaft (X) as the center, a driven pulley (20) is provided on the rear wheel, and a groove (120) is formed on the circumference of the driving pulley (10) and the driven pulley (20) to allow the insertion of a belt (30), and the driving pulley (10) and the driven pulley (20) are connected and coupled by the belt (30).

2. In paragraph 1, A bicycle using a belt and pulley as a power transmission means, wherein insertion grooves (121) are provided at regular intervals on both inner sides of the above groove (120).

3. In paragraph 1, The above belt (30) is a bicycle that uses a belt and pulley as a power transmission means, which includes a polyester microfiber (300) with rubber (310) wrapping the outer surface thereof.

4. In paragraph 1, A bicycle using a belt and pulley as a power transmission means, including one or more auxiliary pulleys (200) provided below the above-mentioned driven pulley (20).

5. In paragraph 1, A bicycle in which the above-mentioned driving pulley (10) and driven pulley (20) are equipped with a belt and pulley having grooves (120) in multiple stages from one side of the circumference to the other side of the circumference, as a power transmission means.

6. In paragraph 1, The outer surface of the belt (30) is coated with 15 to 55 wt% of silicon dioxide, 10 to 15 wt% of toluene (C6H5CH3), 1 to 3 wt% of butanone, 1 to 3 wt% of methyl isobutyl ketone, 10 to 15 wt% of butyl acetate, 5 to 10 wt% of propylene glycol methyl ether acetate, 0 to 1 wt% of ethanol, 1 to 5 wt% of ethanol benzene, 10 to 15 wt% of acrylic polyol, 1 to 4 wt% of polyester polyol, and 5 to 10 wt% of xylene. A bicycle using a belt and pulley as a power transmission means, the belt and pulley including a coating agent mixed with 10% by weight of a rubber and 1 to 4% by weight of other additives.

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