Bicycle drivetrain that reduces drive axle load

Abstract

The present invention relates to a bicycle drive device that reduces the load on the drive shaft, wherein the bicycle wheel frame and the drive shaft are integrally formed, and a main gear is integrally provided at each end of the drive shaft, and sub-gears are provided on both sides of the main gear, thereby reducing the load applied to the bearings of the drive shaft by distributing the load concentrated on the drive shaft through the sub-gears provided by the wheel frame and the drive shaft being integrally formed and the main gears are integrally provided at each end of the drive shaft and sub-gears meshing with the main gears on both sides, thereby making bicycle driving easier and improving the rotational force and durability of the wheel, so as to increase the propulsion force of the bicycle and maintain the stability of the user's driving force, and thus enabling smoother bicycle operation by improving rolling performance. The specific means of the present invention are: a wheel frame (H) having a tube detachably provided on its outer surface; and a disc-shaped anti-slip plate (100) integrally provided on both sides at a predetermined interval in a rod shape, which is integrally fastened to the center of the wheel frame (H). A drive shaft (10) having fixing holes (101) drilled at regular intervals in the anti-slip plate (100) so that a spot (S) can be fixedly coupled, and a main gear (110) integrally provided at both ends, with a screw portion (120) formed near the rear of the main gear (110); a main housing (20) provided on the outer side between the anti-slip plate (100) and the main gear (110), having a bearing portion (200) on its inner circumference, and fixed to the bicycle body by a main body connecting portion (C); a fixing fastener (30) coupled to the screw portion (120) to fixly coupled the drive shaft (10) and the main housing (20); a sub-housing (40) provided with a sub-gear (400) that can be meshed and coupled to both sides of the main gear (110); and a member coupled to the outer circumference of one side of the main housing (20). Finishing part (50);A bicycle drive device for reducing drive shaft load including, and the main housing (20) comprises: a first housing (210) having a first coupling hole (211) formed at a predetermined interval on the outer circumference edge, a first through hole (212) drilled in the center through which the drive shaft (10) is connected, a first seating groove (213) formed on the outer circumference of the first through hole (212) to which the bearing part (200) is seated and connected, and a fastening through tube (215) formed on both sides of the first seating groove (213) having a fastening screw part (214) provided on the inner circumference; A second housing (220) having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is connected, and a second seating groove (223) formed on the outer periphery of the second through hole (222) to which the bearing part (200) is seated and connected; A bicycle drive device for reducing drive shaft load, comprising fastening the first coupling hole (211) and the second coupling hole (221) with a bolt (V), and the main housing (20) comprises a first coupling hole (211) formed at a predetermined interval on the outer circumference edge, a first through hole (212) drilled in the center through which the drive shaft (10) is connected, and a first seating groove (213) formed on the outer circumference of the first through hole (212) to which the bearing part (200) is seated and connected, and a first housing (210) in the shape of a disc having the first seating groove (213) formed therein; A disc-shaped second housing (220) having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second seating groove (223) formed on the outer periphery of the second through hole (222) through which the bearing part (200) is seated and coupled;A bicycle drive device for reducing drive shaft load, comprising fastening the first coupling hole (211) and the second coupling hole (221) with a bolt (V); the bearing part (200) is provided on the inner side of the first seating groove part (213) and the second seating groove part (223), and comprises an outer ring body (202) and an inner ring body (203) integrally formed with a bearing (B) on the inner side and a ring (201) provided on the front and rear sides, respectively; and the sub-housing (40) comprises a fixed shaft (410) having a coupling screw part (411) formed on the outer circumference of both ends for a predetermined length; a fixing nut (420) coupled to one of the coupling screw parts (411); and a sub-gear (400) coupled to the rear of the fixing nut (410) and having a bearing (B) on the inner side. A bicycle drive device for reducing drive shaft load including, and the end portion (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the end portion (50) according to the inclination to maintain a horizontal position and prevent load shifting when driving uphill or downhill, wherein the sub-housing (40) has a fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished; a vertical bar (433) having a shaft rod (431) provided on one side at the center of the lower end and a roller (432) provided at the end of the shaft rod (431), and a branch bar (434) integrally branched horizontally on both sides at the top of the vertical bar (433), the ends of which are bent vertically upward and have a fixed through hole (435) drilled at the end. A leveling adjustment part (430); a packing (P) that passes through the fixed through hole (435) and is coupled to the coupling screw part (411); a sub-gear (400) that is coupled to the rear of the packing (P) and has a bearing (B) on the inside; and a fixing nut (420) that is coupled and fixed to the coupling screw part (411) of the fixed shaft (410) which passes through the fixed through hole (435), the packing (P), and the sub-gear (400).A bicycle drive device for reducing drive shaft load including, and the end portion (50) is formed in a cylindrical shape such that the sub-housing (40) provided inside slides along the inner circumference of the end portion (50) according to the inclination to maintain a horizontal position and prevent load shifting when driving uphill or downhill, wherein the sub-housing (40) has a fixed shaft (410) having a connecting screw portion (411) formed on the outer circumference of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer circumference of the other end, and a packing (P) that penetrates and connects the fixed shaft (410); A vertical bar (433) having a shaft (431) provided in both directions at the bottom center and rollers (432) provided at both ends of the shaft (431), and a connecting bar (436) formed integrally on both sides at the top of the vertical bar (433), and a plurality of branched bars (434) provided horizontally parallel to each other at both ends of the connecting bar (436), and the ends of the branched bars (434) are bent vertically upward and have fixed through holes (435) drilled at the ends; a sub-gear (400) having a bearing (B) provided on the inner side that matches the width of the connecting bar (436); and a packing (P) that passes through each of the plurality of fixed through holes (435) and passes through the sub-gear (400) and is then coupled. A fixing nut (420) that is fixed to the coupling screw portion (411) of the fixed shaft (410) which is coupled through the fixed through hole (435), packing (P), and sub-gear (400);The present invention, characterized by a "bicycle drive system that reduces drive shaft load including," comprises the above-described configuration. By integrating the bicycle wheel frame and the drive shaft, the range driven by the power of the user's pedals can be driven simultaneously, unlike conventional systems. Furthermore, by integrally integrating the wheel frame and the drive shaft, a main gear is provided at each end of the drive shaft and sub-gears are provided on both sides of the main gear. This allows the load concentrated on the drive shaft when the user pedals to be distributed through the sub-gears, thereby reducing the load applied to the bearings of the drive shaft and making bicycle driving easier. Additionally, by integrally integrating the wheel frame and the drive shaft and simultaneously providing sub-gears, bicycle driving is made easier. Moreover, by improving the rotational force and durability of the wheel, the rolling performance is enhanced to increase the propulsion of the bicycle and maintain the stability of the user's driving force, thereby enabling smoother bicycle operation. Finally, the invention improves the convenience of replacing parts such as bearings and enhances durability due to long-term use of the bicycle. it is.;

Description

Technology Field

[0001] The present invention relates to a bicycle drive system that reduces the load on the drive shaft, wherein the bicycle wheel frame and the drive shaft are integrally formed, and a main gear is integrally provided at each end of the drive shaft, and sub-gears are provided on both sides of the main gear. Unlike conventional systems, the load concentrated on the drive shaft is distributed through the sub-gears provided by the integration of the wheel frame and the drive shaft and the provision of main gears at both ends of the drive shaft and sub-gears meshing with the main gears on both sides, thereby reducing the load applied to the bearings of the drive shaft, making bicycle driving easier, improving the rotational force and durability of the wheel, enhancing the propulsion of the bicycle, and maintaining the stability of the user's driving force, resulting in improved rolling performance and enabling smoother bicycle operation. Background Technology

[0002] Bicycles have long been a means of transportation. As energy resources gradually become depleted, there are signs that a bicycle boom is on the horizon. Furthermore, bicycles have long remained popular not only because they are eco-friendly and do not consume energy, but also because they offer health benefits through exercise.

[0003] In addition, various styles of bicycles, such as hiking bikes, mountain bikes, and racing bikes, have been developed to suit diverse uses.

[0004] In bicycles, the hub is a power transmission structure that functions to transmit chain power to the wheels and is composed of the most precise and complex structure. The hub assembly is largely composed of the frame, an adapter to which the chain sprocket is mounted, a racer to which this adapter is connected, and a hub axle. When a load is applied to the bicycle pedals, power is transmitted to the chain sprocket via the chain, and then transmitted to the frame where the wheels are mounted through the adapter and racer, which are connected via a one-way clutch system.

[0005] However, conventional bicycle hubs as described above had drawbacks, such as reduced rotational force and increased friction caused by the load and impact being concentrated on the surrounding ball bearings through the axle member fitted in the center of the hub, which required significant effort to drive the bicycle; additionally, prolonged use resulted in severe wear of internal parts due to contact rotation, reduced durability, and problems with power transmission.

[0006] Meanwhile, the wheel is structured such that the wheel frame rotates around the wheel center axis by means of the aforementioned power transmission structure to drive it, and the problems arising from such a structure are,

[0007] First, there was a problem with the relative decrease in the rotational force of the wheel; second, the inconvenience of replacing bearings due to long-term use; and third, the problem with the relative instability of the wheel's rotational force. Prior art literature

[0009] Republic of Korea Patent Registration No. 10-1794517 Republic of Korea Patent Registration No. 10-1812105 Republic of Korea Patent Publication No. 10-2015-0109299 Republic of Korea Patent Registration No. 10-1756475 The problem to be solved

[0010] Accordingly, the present invention is intended to solve the above-mentioned problems,

[0011] First, the purpose of the bicycle drive device for reducing drive shaft load according to the present invention is to integrate the bicycle wheel frame and the drive shaft so that the range driven by the power driving the user's pedals can be driven simultaneously, unlike conventional methods.

[0012] In addition, the purpose of the bicycle drive device for reducing drive shaft load according to the present invention is to make driving the bicycle easier by reducing the load applied to the bearings of the drive shaft through the sub-gear, by having a main gear integrally provided at each end of the drive shaft and sub-gears provided on both sides of the main gear, thereby distributing the load concentrated on the drive shaft when the user pedals by providing the sub-gears that mesh with the main gears integrally provided at both ends of the drive shaft.

[0013] In addition, the purpose of the bicycle drive device for reducing drive shaft load according to the present invention is to enable smoother bicycle operation by improving rolling performance, thereby enhancing the rotational force and durability of the wheel, increasing the propulsion of the bicycle, and maintaining the stability of the user's driving force, by integrally configuring the wheel frame and the drive shaft and simultaneously equipping it with a sub-gear.

[0014] Next, the purpose of the bicycle drive device for reducing drive shaft load according to the present invention is to improve the convenience and durability of replacing parts such as bearings due to long-term use of the bicycle, and

[0015] Next, the bicycle wheel frame and the drive shaft are integrally formed, and a main gear is integrally provided at each end of the drive shaft, and sub-gears are provided on both sides of the main gear, so that when a user pedals, the load concentrated on the drive shaft is distributed through the sub-gears provided by the main gears integrally provided at both ends of the drive shaft and the sub-gears meshing with the main gears on both sides of the main gears, thereby reducing the load applied to the bearings of the drive shaft.

[0016] Furthermore, the purpose of the bicycle drive device for reducing the drive shaft load of the present invention is to make driving the bicycle easier by fundamentally preventing the phenomenon of load shifting, in order to solve problems caused by the reduction of wheel rotational force and the unidirectional concentration of load that may occur due to load imbalance caused by leaning in a certain direction on inclined downhill or uphill slopes. This is achieved by having a roller slide along the inner surface of the finishing part to naturally maintain the horizontal alignment of the sub-gear. means of solving the problem

[0017] Specific means for achieving the above-mentioned purpose are,

[0018] A wheel frame (H) having a tube detachably provided on its outer surface; a drive shaft (10) integrally fastened to the center of the wheel frame (H), having disc-shaped anti-slip plates (100) integrally provided on both sides at predetermined intervals in a rod shape, with fixing holes (101) drilled at predetermined intervals in the anti-slip plates (100) to allow a spot (S) to be fixedly coupled, having a main gear (110) integrally provided at both ends, and a screw portion (120) formed near the rear of the main gear (110); a main housing (20) provided on the outer side between the anti-slip plates (100) and the main gear (110), having a bearing portion (200) on its inner circumference, and fixed to the bicycle body by a main body connecting portion (C); and a fixing fastener (30) coupled to the screw portion (120) to fixly coupled the drive shaft (10) and the main housing (20). A bicycle drive device for reducing drive shaft load, comprising: a sub-housing (40) equipped with a sub-gear (400) capable of meshing with both sides of the main gear (110); and a finishing part (50) coupled to one side of the outer circumference of the main housing (20).

[0019] The above main housing (20) is,

[0020] A first housing (210) having a first coupling hole (211) formed at a predetermined interval on the outer edge, a first through hole (212) drilled in the center through which the drive shaft (10) is coupled, a first seating groove (213) formed on the outer periphery of the first through hole (212) for which the bearing part (200) is seated and coupled, and fastening through tubes (215) formed on both sides of the first seating groove (213) with fastening screw parts (214) provided on the inner surface; a second housing (220) having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second seating groove (223) formed on the outer periphery of the second through hole (222) for which the bearing part (200) is seated and coupled; A bicycle drive device for reducing drive shaft load, comprising fastening the first coupling hole (211) and the second coupling hole (221) with a bolt (V), and

[0021] The above main housing (20) is,

[0022] A first housing (210) in the shape of a disc, having a first coupling hole (211) formed at a predetermined interval on the outer edge, a first through hole (212) drilled in the center through which the drive shaft (10) is coupled, and a first seating groove (213) formed on the outer periphery of the first through hole (212) for which the bearing part (200) is seated and coupled; a second housing (220) in the shape of a disc, having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second seating groove (223) formed on the outer periphery of the second through hole (222) for which the bearing part (200) is seated and coupled; A bicycle drive device for reducing drive shaft load, comprising fastening the first coupling hole (211) and the second coupling hole (221) with a bolt (V), and

[0023] The above bearing part (200) is,

[0024] A bicycle drive device for reducing drive shaft load, comprising an outer ring body (202) and an inner ring body (203) integrally formed, wherein the outer ring body (202) and the inner ring body (203) are provided on the inner side of the first seating groove (213) and the second seating groove (223), and the outer ring body (202) has a bearing (B) on the inner side and a ring (201) is provided on the front and rear respectively.

[0025] The above sub-housing (40) is,

[0026] A bicycle drive device for reducing drive shaft load, comprising: a fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of each end for a predetermined length; a fixing nut (420) connected to one of the connecting screw portions (411); and a sub-gear (400) connected to the rear of the fixing nut (410) and having a bearing (B) on the inside; and

[0027] The above-mentioned finishing part (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing part (50) according to the inclination to maintain a horizontal position, thereby preventing load shifting when driving uphill or downhill, and the sub-housing (40) is,

[0028] A fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished;

[0029] A bicycle drive device for reducing drive shaft load, comprising: a vertical bar (433) having a shaft (431) provided unidirectionally at the bottom center and a roller (432) provided at the end of the shaft (431); a horizontal adjustment part (430) having both ends of a branch bar (434) integrally branched horizontally on both sides at the top of the vertical bar (433) bent vertically upward and having a fixed through hole (435) drilled at the end; a packing (P) that passes through the fixed through hole (435) and is coupled to a coupling screw part (411); a sub-gear (400) coupled to the rear of the packing (P) and having a bearing (B) provided on the inside; and a fixing nut (420) that is coupled and fixed to the coupling screw part (411) of the fixed shaft (410) which passes through the fixed through hole (435), the packing (P), and the sub-gear (400).

[0030] The above-mentioned finishing part (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing part (50) according to the inclination to maintain a horizontal position, thereby preventing load shifting when driving uphill or downhill, and the sub-housing (40) is,

[0031] A fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished; a packing (P) that penetrates and connects the fixed shaft (410); a vertical bar (433) having a shaft rod (431) provided in both directions at the center of the bottom and rollers (432) provided at both ends of the shaft rod (431), a connecting bar (436) formed integrally on both sides at the top of the vertical bar (433), and a plurality of branched bar (434) provided horizontally parallel to each other at both ends of the connecting bar (436), and the ends of the branched bar (434) are bent vertically upward and have a fixing through hole (435) drilled at the end; a sub-gear (400) having a bearing (B) provided on the inner side that matches the width of the connecting bar (436). The above objective can be achieved by having a bicycle drive device that reduces the load on the drive shaft as a structural feature, comprising: a packing (P) that passes through each of the above-mentioned multiple fixed through holes (435) and passes through the sub-gear (400) and is then coupled; and a fixing nut (420) that is coupled and fixed to the coupling screw portion (411) of the above-mentioned fixed shaft (410) which passes through the above-mentioned fixed through holes (435), the packing (P), and the sub-gear (400).

[0032] delete Effects of the invention

[0033] The present invention configured as described above is,

[0034] The bicycle wheel frame and drive shaft are integrated to enable simultaneous operation by the power generated by the user's pedaling, unlike conventional designs. Main gears are integrally provided at both ends of the drive shaft, and sub-gears are provided on both sides of the main gears. This distributes the load concentrated on the drive shaft when the user pedals, thereby reducing the load applied to the drive shaft's bearings and making bicycle operation easier. Furthermore, by integrating the wheel frame and drive shaft and providing sub-gears, the bicycle operation is made easier. Additionally, improved rolling performance enhances the wheel's rotational force and durability, thereby increasing propulsion and maintaining the stability of the user's driving force, enabling smoother bicycle riding. Finally, the convenience of replacing parts such as bearings and the durability of the bicycle after long-term use are improved.

[0035] Next, the bicycle wheel frame and the drive shaft are integrally formed, and a main gear is integrally provided at each end of the drive shaft, and sub-gears are provided on both sides of the main gear, so that when a user pedals, the load concentrated on the drive shaft is distributed through the sub-gears provided by the main gears integrally provided at both ends of the drive shaft and the sub-gears meshing with the main gears on both sides of the main gears, thereby reducing the load applied to the bearings of the drive shaft.

[0036] Furthermore, in order to solve problems caused by a decrease in wheel rotational force and unidirectional load concentration that may occur due to load imbalance in a certain direction on inclined downhill or uphill slopes, the roller slides on the inner surface of the finishing part to naturally maintain the horizontal alignment of the sub-gear, thereby fundamentally preventing load imbalance and making bicycle driving easier.

[0037] Although the present invention has been illustrated and described above with reference to specific preferred embodiments, the present invention is not limited to the above-mentioned embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention. Brief explanation of the drawing

[0038] FIG. 1 is an overall schematic diagram of a bicycle drive system that reduces drive shaft load according to the present invention. FIG. 2 is an exploded perspective view of a bicycle drive device that reduces the drive shaft load according to the present invention. FIG. 3 is an exploded perspective view of a key part of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 4 is an exploded perspective view of a key part of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 5 is an exploded perspective view of the main housing in a bicycle drive device that reduces the drive shaft load according to the present invention. FIG. 6 is a cross-sectional view of the connection of the main housing in a bicycle drive device that reduces the drive shaft load according to the present invention. FIG. 7 is an exploded perspective view of a sub-housing in a bicycle drive device that reduces drive shaft load according to the present invention. FIG. 8 is a cross-sectional view of the connection of a sub-housing in a bicycle drive device that reduces the drive shaft load according to the present invention. FIG. 9 is an overall cross-sectional view of a bicycle drive device that reduces the drive shaft load according to the present invention, FIG. 10 is a simplified diagram of a state in which a sub-gear is engaged with a main gear in a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 11 is an overall schematic diagram of another embodiment of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 12 is an exploded perspective view of FIG. 11 of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 13 is an exploded perspective view of the main part of FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 14 is an exploded perspective view of the main housing and the drive shaft of FIG. 11 in a bicycle drive device for reducing the drive shaft load according to the present invention. FIG. 15 is an exploded perspective view of the main housing of FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 16 is a combined cross-sectional view of FIG. 15 in a bicycle drive device for reducing drive shaft load according to the present invention, FIG. 17 is a separated perspective view of the horizontal adjustment part and the main part of one embodiment of FIG. 11 of the bicycle drive device for reducing drive shaft load according to the present invention. FIG. 18 is a combined cross-sectional view of FIG. 17 in a bicycle drive device for reducing drive shaft load according to the present invention, FIG. 19 is an overall cross-sectional view of FIG. 11 of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 20 is a drawing showing the sliding state of a horizontal adjustment part provided on the inner side of the finishing part applied in FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 21 is a perspective view of the combination of a horizontal adjustment part and a key part of another embodiment in FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 22 is an exploded perspective view of FIG. 21 of a bicycle drive device for reducing drive shaft load according to the present invention. FIG. 23 is a schematic cross-sectional view showing the combined state of FIG. 21 in a bicycle drive device that reduces the drive shaft load according to the present invention. Specific details for implementing the invention

[0039] Specific structural or functional descriptions regarding embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention. Since embodiments according to the concept of the present invention may be subject to various modifications and may take various forms, they include all modifications, equivalents, or substitutions that fall within the spirit and technical scope of the present invention. Furthermore, terms and words used in the specification and claims are not limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the understanding that the inventor may appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in the specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may be possible or exist at the time of filing the present invention.

[0040] Furthermore, unless otherwise defined in the specification of the present invention, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0041] Hereinafter, the bicycle drive device for reducing the drive shaft load according to the present invention will be described in detail with reference to the drawings.

[0042] FIG. 1 is an overall schematic diagram of a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 2 is an exploded perspective view of a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 3 is an exploded perspective view of a key part of a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 4 is an exploded perspective view of a key part of a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 5 is an exploded perspective view of a main housing in a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 6 is an assembled cross-sectional view of a main housing in a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 7 is an exploded perspective view of a sub-housing in a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 8 is an assembled cross-sectional view of a sub-housing in a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 9 is an overall cross-sectional view of a bicycle drive system for reducing drive shaft load according to the present invention; FIG. 10 is a bicycle for reducing drive shaft load according to the present invention A simplified diagram of a state in which a sub-gear is engaged with a main gear in a drive unit; FIG. 11 is an overall schematic diagram of another embodiment of a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 12 is an exploded perspective view of FIG. 11 in a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 13 is an exploded perspective view of a key part of FIG. 11 in a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 14 is an exploded perspective view of the main housing and drive shaft of FIG. 11 in a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 15 is an exploded perspective view of the main housing of FIG. 11 in a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 16 is a combined cross-sectional view of FIG. 15 in a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 17 is an exploded perspective view of the horizontal adjustment part and key part of an embodiment in FIG. 11 of a bicycle drive unit for reducing drive shaft load according to the present invention; FIG. 18 is A combined cross-sectional view of FIG. 17 in a bicycle drive device for reducing drive shaft load according to the present invention, FIG. 19 is an overall cross-sectional view of FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention.FIG. 20 is a drawing showing the sliding state of a horizontal adjustment part provided on the inner side of the finishing part applied to FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention; FIG. 21 is a combined perspective view of the horizontal adjustment part and the key part of another embodiment in FIG. 11 in a bicycle drive device for reducing drive shaft load according to the present invention; FIG. 22 is an exploded perspective view of FIG. 21 in a bicycle drive device for reducing drive shaft load according to the present invention; and FIG. 23 is a schematic cross-sectional view showing the combined state of FIG. 21 in a bicycle drive device for reducing drive shaft load according to the present invention.

[0043] As shown in the drawings, the core of the present invention consists of two main parts:

[0044] First, unlike conventional technology, the drive shaft (10) connected to the center of the wheel frame (H) is driven as a single unit with respect to the drive shaft (10) and the wheel frame (H) when the bicycle is driven. Main housings (20) are provided on each side relative to the drive shaft (10), and other components are configured identically on both sides relative to the drive shaft (10). By maintaining a simultaneous driving operation relationship between the drive shaft (10) and the wheel frame (H), the rotational force of the wheel is improved, thereby increasing the propulsion force of the bicycle and maintaining the stability of the user's driving force, allowing the bicycle to be ridden for a long time. Furthermore, the convenience of replacing parts such as bearings due to long-term use of the bicycle and durability are improved, and the wheel frame has relative stability and durability. Moreover, this is intended to fundamentally eliminate inconvenience in driving, reduced propulsion force, and reduced rotational force caused by the load being concentrated on one of the sub-gears when going down or up a sloping incline.

[0045] Secondly, a main gear (110) is integrally provided at each end of the drive shaft (10), and sub-gears (400) are provided on both sides of the main gear (110). This allows the load concentrated on the drive shaft (10) to be distributed through the sub-gears (400) that mesh with the main gear (110), thereby reducing the load applied to the bearings of the drive shaft (10) and making it easier to drive the bicycle. It also improves the rotational force and durability of the wheels, thereby increasing the propulsion force of the bicycle and maintaining the stability of the user's driving force, and thus enables smoother bicycle operation.

[0046] To explain in detail,

[0047] [Example 1]

[0048] First, in a bicycle equipped with a wheel frame (H) having a tube detachably provided on its outer surface as shown in FIG. 1,

[0049] Indicator symbol 10 indicates a drive shaft, and as shown in FIGS. 2 and 3, the drive shaft (10) is integrally fastened to the center of the wheel frame (H) and is in the shape of a rod, with disc-shaped anti-slip plates (100) integrally provided on both sides at a predetermined interval, and fixing holes (101) are drilled at a certain interval in the anti-slip plates (100) so that a spot (S) can be fixedly coupled, and a main gear (110) is integrally provided at both ends, and a screw portion (120) is formed near the rear of the main gear (110).

[0050] Reference numeral 20 indicates a main housing, and as shown in FIGS. 5 and 6, the main housing (20) is provided on the outer side between the anti-slip plate (100) and the main gear (110), has a bearing part (200) on its inner circumference, and is fixed to the bicycle body by a main body connecting part (C). Specifically,

[0051] The above main housing (20) has a first coupling hole (211) formed at a predetermined interval on the outer circumference, a first through hole (212) drilled in the center through which the drive shaft (10) is connected, a first seating groove (213) formed on the outer circumference of the first through hole (212) through which the bearing part (200) is seated and connected, and a first housing (210) having a fastening through tube (215) with a fastening screw part (214) provided on the inner circumference on both sides of the first seating groove (213).

[0052] A second housing (220) having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is connected, and a second seating groove (223) formed on the outer periphery of the second through hole (222) to which the bearing part (200) is seated and connected;

[0053] The first connecting hole (211) and the second connecting hole (221) are connected by a bolt (V).

[0054] Meanwhile, the bolt (V) is joined by the bolt (V) such that the fastening hole (500) of the finishing part (50) shown in FIG. 2 and the first coupling hole (211) and the second coupling hole (221) shown in FIG. 9 are aligned.

[0055] In addition, as shown in FIGS. 5 and 6, the bearing portion (200) is,

[0056] An outer ring body (202) and an inner ring body (203) are integrally formed, wherein the outer ring body (202) is provided on the inner side of the first seating groove (213) and the second seating groove (223), and a bearing (B) is provided on the inner side and a ring (201) is provided on the front and rear sides, respectively.

[0057] Next, the reference numeral 30 indicates a fixed fastener, and as shown in FIGS. 3 and 6, the fixed fastener (30) is coupled to the screw portion (120) to securely connect the drive shaft (10) and the main housing (20).

[0058] Reference numeral 40 indicates a sub-housing, wherein the sub-housing (40) is configured to have a sub-gear (400) provided to be meshable on both sides of the main gear (110) as shown in FIGS. 6 and 7,

[0059] Specifically, the above sub-housing (40) is,

[0060] A fixed shaft (410) having connecting screw portions (411) formed on the outer surface of each end for a predetermined length;

[0061] A fixing nut (420) coupled to any one of the above coupling screw parts (411);

[0062] It is composed of a sub-gear (400) that is coupled to the rear of the above-mentioned fixed nut (410) and has a bearing (B) on the inside.

[0063] In addition, the reference numeral 50 indicates a finishing portion, and as shown in FIGS. 1, 2, and 9, the finishing portion (50) is coupled to one side of the outer periphery of the main housing (20).

[0065] delete

[0066] delete

[0067] The assembly and operation relationship of the above Example 1 will be explained.

[0068] First, the drive shaft (10) is connected to the wheel frame (H), and then the spoke (S) is fixedly fastened to the fixing hole (101) to fix the drive shaft (10) and the wheel frame (H).

[0069] In the above state, a bearing part (200) is accommodated in the main housing (20), that is, the first housing (210) and the second housing (220), with a bearing (B) provided in the first seating groove (213) and the second seating groove (223) as shown in FIGS. 5 and 6, and the bearing part (200) is fastened with a ring (201) attached to the front and rear of the bearing part (200), and then the first coupling hole (211) and the second coupling hole (221) are joined using a bolt (V).

[0070] At this time, the reason for fastening the ring (201) is that the bearing (B) is provided on both sides based on the drive shaft (10) in the present invention, so that only the inner ring body (203) and the ring (201) of the bearing part (200) rotate, and the outer ring body (202) is fixed to the main housing (20), and at the same time, the main housing (20) is fixed by the main body connecting part (C) connected to the main body of the bicycle as shown in FIG. 8.

[0071] As described above, a bearing part (200) and a ring (201) are fastened and combined to the main housing (20), and a fixed shaft (410) having a one-sided connecting screw part (411) formed on the connecting screw part (214) of the connecting through-hole (215) is fastened and fixed as shown in FIG. 8, and a fixing nut (420) is fastened to the other-sided connecting screw part (411).

[0072] When a user drives the drive shaft (10) in the assembled state as described above, the wheel frame (H) is driven simultaneously, and at the same time, the main gear (110) and sub-gear (400) provided at both ends of the drive shaft (10) are engaged and driven as shown in FIG. 9, thereby distributing the load through the sub-gear (400) and reducing the load applied to the bearing (B) of the drive shaft (10), making it easier to drive the bicycle.

[0073] [Example 2]

[0074] First, the basic components in Example 1 and Example 2 are the same, specifically, in a bicycle equipped with a wheel frame (H) having a tube detachably provided on its outer surface as shown in FIG. 11,

[0075] As shown in FIGS. 12 and 13, the drive shaft (10) is integrally connected to the center of the wheel frame (H) and is shaped like a rod with disc-shaped anti-slip plates (100) integrally provided on both sides at a predetermined interval. Fixing holes (101) are drilled at a predetermined interval in the anti-slip plates (100) so that a spot (S) can be fixedly connected. Main gears (110) are integrally provided at both ends, and a screw portion (120) is formed near the rear of the main gears (110).

[0076] As illustrated in FIGS. 15 and 16, the main housing (20) is provided on the outer side between the anti-slip plate (100) and the main gear (110), has a bearing portion (200) on its inner circumference, and is fixed to the bicycle body by a main body connecting portion (C). Specifically,

[0077] The above main housing (20) has a first coupling hole (211) formed at a predetermined interval on the outer circumference, a first through hole (212) drilled in the center through which the drive shaft (10) is connected, and a first seating groove (213) formed on the outer circumference of the first through hole (212) to which the bearing part (200) is seated and connected, and a first housing (210) in the shape of a disc having the first seating groove (213) formed therein;

[0078] A disc-shaped second housing (220) having a second coupling hole (221) formed at a predetermined interval on the outer edge, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second seating groove (223) formed on the outer periphery of the second through hole (222) through which the bearing part (200) is seated and coupled;

[0079] The first connecting hole (211) and the second connecting hole (221) are connected by a bolt (V).

[0080] Meanwhile, the bolt (V) is joined by the bolt (V) such that the fastening hole (500) of the finishing part (50) shown in FIG. 2 and the first coupling hole (211) and the second coupling hole (221) shown in FIG. 19 are aligned.

[0081] In addition, as shown in FIGS. 15 and 16, the bearing portion (200) is,

[0082] An outer ring body (202) and an inner ring body (203) are integrally formed, wherein the outer ring body (202) is provided on the inner side of the first seating groove (213) and the second seating groove (223), and a bearing (B) is provided on the inner side and a ring (201) is provided on the front and rear sides, respectively.

[0083] As shown in FIGS. 13 and 14, the fixed fastener (30) is coupled to the screw portion (120) to securely connect the drive shaft (10) and the main housing (20).

[0084] The above sub-housing (40) is configured to have a sub-gear (400) provided to be meshable on both sides of the main gear (110) as shown in FIGS. 13, 17, and 18,

[0085] Specifically, as a prerequisite for the application of the sub-housing (40) of the present embodiment, as shown in FIGS. 11 and 12, the finishing part (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing part (50) according to the inclination to maintain a horizontal position, thereby preventing the load from shifting when driving uphill or downhill.

[0086] The sub-housing (40) provided inside the above-mentioned finishing portion (50) is, as shown in FIGS. 12, 13, 17, and 18,

[0087] A fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished;

[0088] A vertical bar (433) having a shaft (431) provided at the bottom center and a roller (432) provided at the end of the shaft (431), and a horizontal adjustment part (430) having both ends of a branch bar (434) that is integrally branched horizontally on both sides at the top of the vertical bar (433) bent vertically upward and having a fixed through hole (435) drilled at the end;

[0089] A packing (P) that passes through the fixed through hole (435) and is coupled to the coupling screw portion (411);

[0090] A sub-gear (400) coupled to the rear of the above packing (P) and having a bearing (B) on the inside;

[0091] A fixing nut (420) that is fixed to the coupling screw portion (411) of the fixed shaft (410) which is coupled through the fixed through hole (435), packing (P), and sub-gear (400);

[0092] It is a structure that includes.

[0093] Preferably, so that the sub-gear (400) can be stably coupled, the sub-housing (40) as shown in FIGS. 21 to 23,

[0094] A fixed shaft (410) having a connecting screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished;

[0095] A packing (P) that penetrates and connects the above fixed shaft (410);

[0096] A vertical bar (433) having a shaft (431) provided in both directions at the bottom center and rollers (432) provided at both ends of the shaft (431), and a connecting bar (436) formed integrally on both sides at the top of the vertical bar (433), and a plurality of branched bars (434) horizontally parallel provided at both ends of the connecting bar (436), and the ends of the branched bars (434) are bent vertically upward and have a fixed through hole (435) drilled at the end; a horizontal adjustment part (430);

[0097] A sub-gear (400) having a bearing (B) on the inner side that matches the width of the connecting bar (436);

[0098] A packing (P) that passes through each of the above-mentioned plurality of fixed through holes (435) and passes through the sub-gear (400) and is then combined;

[0099] A fixing nut (420) that is fixed to the coupling screw portion (411) of the fixed shaft (410) which is coupled through the fixed through hole (435), packing (P), and sub-gear (400);

[0100] It is a structure that includes.

[0101] In order for a sub-housing (40) of such a structure to be applied, as mentioned above, the finishing part (50) must be in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing part (50) according to the inclination to maintain a horizontal position, thereby preventing the load from shifting when driving uphill or downhill.

[0103] delete

[0104] delete

[0105] The assembly and operation relationship of the above Example 2 will be explained.

[0106] Most of it is similar to Example 1, and unlike Example 1, the sub-gear (400) in this embodiment is simply engaged with the main gear (110), and the sub-gear (400) in this embodiment is not fixed to the main housing (20).

[0107] In this state, the sub-gear (400) is made to slide, that is, rotate along a guide rail provided on the inner circumference of the finishing part (50) by the horizontal adjustment part (430) as shown in FIG. 13, 17, and 18, which is not indicated in the drawing. Therefore, when driving on a road inclined to one side as shown in FIG. 20, unlike Example 1, the sub-gear (400) is not fixed to the main housing (20) but slides by the horizontal adjustment part (430). Thus, although the bicycle itself is inclined to one side, the main gear (110) and the sub-gear (400) always maintain a horizontal position by the rotation of the roller (432) as shown in FIG. 20, so the load is not concentrated to one side, and thus no separate load is applied to the driving force of the pedal or the rotational force of the wheel.

[0108] Meanwhile, as illustrated in FIGS. 21 to 23, the sub-gear (400) in this embodiment is connected more stably to the horizontal adjustment part (430), thereby enabling the effect of the present invention to be exerted more effectively as a more stable structure. The sub-gear (400) is provided in the front and rear of the fixed through hole (435), so that the seating part of the sub-gear (400) is naturally provided with an area equal to the width of the connecting bar (436), making it more stable.

[0109] When a user drives the drive shaft (10) in the assembled state as described above, the wheel frame (H) is driven simultaneously, and at the same time, the main gear (110) and sub-gear (400) provided at both ends of the drive shaft (10) are engaged and driven as shown in FIG. 19, thereby distributing the load through the sub-gear (400) and reducing the load applied to the bearing (B) of the drive shaft (10), making it easier to drive the bicycle.

[0110] The present invention, configured as described above, integrates the bicycle wheel frame and the drive shaft to enable simultaneous operation of the range driven by the power of the user's pedals, unlike conventional methods. By integrating the wheel frame and the drive shaft, a main gear is integrally provided at each end of the drive shaft, and sub-gears are provided on both sides of the main gear. This allows the load concentrated on the drive shaft when the user pedals to be distributed through the sub-gears, thereby reducing the load applied to the bearings of the drive shaft and making bicycle operation easier. Furthermore, by integrating the wheel frame and the drive shaft and simultaneously providing sub-gears, the invention facilitates bicycle operation and improves the rotational force and durability of the wheel. This enhances the propulsion of the bicycle and maintains the stability of the user's driving force, thereby improving rolling performance and enabling smoother bicycle operation. Additionally, it improves the convenience and durability of replacing parts such as bearings after long-term use of the bicycle.

[0111] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited to the above embodiments, and it is obvious that various modifications and variations from the description above may be possible by those skilled in the art to which the present invention belongs.

[0112] Therefore, the technical concept of the present invention should be understood by the claims set forth below, but it is obvious that all equivalent or analogous variations thereof fall within the scope of the technical concept of the present invention. Explanation of the symbols

[0113] 10 : Drive shaft 20 : Main housing 30 : Fixed fastener 40 : Sub-housing 50 : Finishing part 100 : Anti-slip plate 101 : Fixed hole 110 : Main gear 120 : Screw section 200 : Bearing section 201 : Ring 202 : Outer ring body 203 : Inner ring body 210 : First housing 211: First connecting hole 212: First through hole 213: First seating groove 214: Fastening screw part 215 : Fastening penetration pipe 220 : Second housing 221 : Second connecting hole 222 : Second through hole 223 : Second mounting groove 400 : Subgear 410 : Fixed shaft 411 : Connecting screw part 412 : Catching plate 420 : Fixing nut 430 : Leveling section 431 : Shaft seal 432 : Roller 433 : Vertical bar 434 : Branch bar 435 : Fixed penetration hole 436 : Connection bar B: Bearing C: Main body connection part H: Wheel frame P: Packing S : Spoke V : Bolt

Claims

Claim 1 A wheel frame (H) having a tube detachably provided on its outer surface; a drive shaft (10) integrally fastened to the center of the wheel frame (H), having disc-shaped anti-slip plates (100) integrally provided on both sides at predetermined intervals in a rod shape, with fixing holes (101) drilled at predetermined intervals in the anti-slip plates (100) to allow a spot (S) to be fixedly coupled, having a main gear (110) integrally provided at both ends, and a screw portion (120) formed near the rear of the main gear (110); a main housing (20) provided on the outer side between the anti-slip plates (100) and the main gear (110), having a bearing portion (200) on its inner circumference, and fixed to the bicycle body by a main body connecting portion (C); a fixing fastener (30) coupled to the screw portion (120) to fixly coupled the drive shaft (10) and the main housing (20); A bicycle drive device for reducing drive shaft load, comprising: a sub-housing (40) equipped with a sub-gear (400) capable of meshing with both sides of a main gear (110); and a finishing part (50) coupled to one side of the outer circumference of the main housing (20). Claim 2 In claim 1, the main housing (20) comprises: a first housing (210) having a first coupling hole (211) formed at a predetermined interval on the outer circumference, a first through hole (212) drilled in the center through which the drive shaft (10) is coupled, a first seating groove (213) formed on the outer circumference of the first through hole (212) through which the bearing part (200) is seated and coupled, and fastening through tubes (215) formed on both sides of the first seating groove (213) with fastening screw parts (214) provided on the inner circumference; and a second housing (210) having a second coupling hole (221) formed at a predetermined interval on the outer circumference, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second through hole (222) through which the bearing part (200) is seated and coupled on the outer circumference of the second through hole (222). A bicycle drive device for reducing drive shaft load, comprising: a second housing (220) having a seating groove (223) formed therein; and a first coupling hole (211) and a second coupling hole (221) being fastened together with a bolt (V). Claim 3 In claim 1, the main housing (20) comprises: a first housing (210) in the shape of a disc having a first coupling hole (211) formed at a predetermined interval on the outer circumference, a first through hole (212) drilled in the center through which the drive shaft (10) is coupled, and a first seating groove (213) formed on the outer circumference of the first through hole (212) to which the bearing part (200) is seated and coupled; a second housing (220) in the shape of a disc having a second coupling hole (221) formed at a predetermined interval on the outer circumference, a second through hole (222) drilled in the center through which the drive shaft (10) is coupled, and a second seating groove (223) formed on the outer circumference of the second through hole (222) to which the bearing part (200) is seated and coupled; and the first A bicycle drive device that reduces the load on the drive shaft, comprising connecting the connecting hole (211) and the second connecting hole (221) with a bolt (V). Claim 4 A bicycle drive device for reducing drive shaft load according to claim 2 or 3, wherein the bearing portion (200) is provided on the inner side of the first seating groove portion (213) and the second seating groove portion (223), and comprises an outer ring body (202) and an inner ring body (203) integrally formed, wherein a bearing (B) is provided on the inner side and a ring (201) is provided on the front and rear respectively. Claim 5 In claim 1, the bicycle drive device for reducing drive shaft load comprises: a fixed shaft (410) having a connecting screw portion (411) formed on the outer circumference of each end for a predetermined length; a fixing nut (420) connected to one of the connecting screw portions (411); and a sub-gear (400) connected to the rear of the fixing nut (410) and having a bearing (B) on the inside. Claim 6 In claim 1, the finishing part (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing part (50) according to the inclination to maintain a horizontal position and prevent load shifting when driving uphill or downhill, and the sub-housing (40) has a fixing shaft (410) in which a connecting screw part (411) of a predetermined length is formed on the outer surface of one end and a locking plate (412) is provided at a predetermined position on the outer surface of the other end, while the other end is finished; a horizontal adjustment part (430) in which a shaft rod (431) is provided on one side at the center of the lower end and a roller (432) is provided at the end of the shaft rod (431), and a branching bar (434) is integrally branched horizontally on both sides at the upper end of the vertical bar (433), the ends of which are bent vertically upward and a fixing through hole (435) is drilled at the end; A bicycle drive device for reducing drive shaft load, comprising: a packing (P) that passes through a fixed through hole (435) and is coupled to a coupling screw portion (411); a sub-gear (400) coupled to the rear of the packing (P) and having a bearing (B) on the inside; and a fixing nut (420) that is coupled and fixed to the coupling screw portion (411) of the fixed shaft (410) which passes through the fixed through hole (435), the packing (P), and the sub-gear (400). Claim 7 In claim 1, the finishing portion (50) is formed in a cylindrical shape so that the sub-housing (40) provided inside slides along the inner surface of the finishing portion (50) according to the inclination to maintain a horizontal position and prevent load shifting when driving uphill or downhill, and the sub-housing (40) comprises: a fixing shaft (410) having a coupling screw portion (411) formed on the outer surface of one end for a predetermined length and a locking plate (412) provided at a predetermined position on the outer surface of the other end, with the other end finished; a packing (P) that penetrates and connects the fixing shaft (410); a vertical bar (433) having a shaft rod (431) provided in both directions at the center of the lower end and rollers (432) provided at both ends of the shaft rod (431), and a connecting bar (436) integrally formed on both sides at the upper end of the vertical bar (433), and a plurality of branched horizontally parallel at both ends of the connecting bar (436). A bicycle drive device for reducing drive shaft load, comprising: a horizontal adjustment part (430) having a branch bar (434) each provided, wherein both ends of the branch bar (434) are bent vertically upward and a fixed through hole (435) is drilled at the end; a sub-gear (400) having a bearing (B) on the inside that matches the width of the connecting bar (436); a packing (P) that passes through each of the plurality of fixed through holes (435) and passes through the sub-gear (400) and is coupled thereto; and a fixing nut (420) that is coupled and fixed to the coupling screw part (411) of the fixed shaft (410) which passes through the fixed through hole (435), the packing (P), and the sub-gear (400). Claim 8 delete

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