Bicycle drive with wheel frame rotating integrally with central shaft

Abstract

The present application aims to provide a bicycle driving device with wheel frame and central shaft rotating as a whole, by making the wheel frame and central shaft of the bicycle as a whole, so that the power generated by the user stepping on the pedal can drive the wheel frame and the central shaft at the same time, thereby reducing friction, preventing the bias load on the internal bearing part due to the user's weight in advance, and since two bearings are respectively arranged on both sides of the central shaft, the rotation performance and durability of the wheel can be improved, the propulsion of the bicycle can be enhanced, the stability of the user's driving force can be maintained, and the rolling performance can be improved, so that the bicycle can be ridden more smoothly.

Description

Technical Field

[0001] This invention relates to a bicycle drive device in which the wheel frame and the central axle rotate as a single unit. By integrating the bicycle wheel frame and the central axle into one unit, unlike existing technologies, the power generated by the user pedaling can simultaneously drive the wheel frame and the central axle, thereby reducing friction, preventing unbalanced loads on the internal bearings due to the user's weight, and improving the rotational performance and durability of the wheel by providing two bearings on each side of the central axle. This enhances the bicycle's propulsion and maintains the stability of the user's driving force, while also improving rolling performance, resulting in a smoother bicycle ride. Background Technology

[0002] Bicycles are a mode of transportation that has been used for a long time. With energy resources gradually becoming depleted, the bicycle craze is showing a resurgence. In addition to being environmentally friendly and requiring no energy consumption, bicycles also promote health through exercise, which is one of the reasons why they have not been phased out for so long.

[0003] In addition, various types of bicycles, such as mountain bikes, mountain bikes, and racing bikes, have been developed to suit different purposes.

[0004] In bicycles, the wheel hub is a power transmission structure used to transfer power from the chain to the wheel, and it consists of the most precise and complex components. The wheel hub assembly mainly includes an adapter that mounts the frame and sprocket, raceways that engage with the adapter, and the hub axle. When the bicycle pedals bear a load, power is transmitted through the chain to the sprocket, and then through the adapter and raceways that engage in a one-way clutch manner, power is transmitted to the frame where the wheel is mounted.

[0005] However, in existing bicycle hubs as described above, loads and impacts are concentrated on the surrounding ball bearings through a shaft component inserted at the center of the hub. This results in reduced rotational performance and increased friction, requiring greater force to propel the bicycle. Furthermore, with prolonged use, there are drawbacks such as accelerated wear of internal components due to contact rotation, decreased durability, and problems with power transmission.

[0006] On the other hand, the wheel has a structure that drives the wheel frame to rotate around the wheel's central axis through the aforementioned power transmission structure. The problems arising from this structure are as follows: First, the rotational performance of the wheels is relatively reduced; second, there is inconvenience in replacing bearings after long-term use; and third, the rotational performance of the wheels is relatively unstable.

[0007] [Existing Technical Documents] [Patent Literature] (Patent Document 0001) Korean Patent Registration No. 10-1794517 (Patent Document 0002) Korean Patent Registration No. 10-1812105 (Patent Document 0003) Korean Patent Publication No. 10-2015-0109299 (Patent Document 0004) Korean Patent Registration No. 10-1756475. Summary of the Invention

[0008] Therefore, the present invention aims to solve the above-mentioned problems. First, the purpose of the bicycle drive device of the present invention, which integrates the wheel frame and the central axle for rotation, is to form the bicycle wheel frame and the central axle into one unit. Unlike the prior art, this allows the power generated by the user pedaling to simultaneously drive the wheel frame and the central axle. Furthermore, the purpose of the bicycle drive device of the present invention, which integrates the wheel frame and the central axle for rotation, is also to improve the rotational performance of the wheel, enhance the propulsion of the bicycle, and maintain the stability of the user's driving force, allowing the user to ride the bicycle for extended periods. Second, the purpose of the bicycle drive device of the present invention, which integrates the wheel frame and the central axle for rotation, is also to improve the convenience and durability of replacing bearings and other components when the bicycle needs to be replaced due to long-term use. Furthermore, the purpose of the bicycle drive device of the present invention, which integrates the wheel frame and the central axle for rotation, is to improve the rotational performance of the wheel while giving the wheel frame relatively high stability and improved durability by enabling the bicycle wheel frame and the central axle to rotate as one unit.

[0009] To achieve the above objectives, the specific technical means are as follows: including: a wheel frame H, on which an inner tube is detachably mounted; a central shaft 10, integrally fastened to the center of the wheel frame H, with fastening grooves 110 forming threads to a predetermined depth on the inner peripheral surfaces of both sides in a rod shape; anti-slip plates 100 are provided at predetermined intervals on the outer peripheral surfaces between the fastening grooves 110, and fixing holes 101 are provided at predetermined intervals on the anti-slip plates 100 to allow the spokes S to be fixedly engaged; a housing 20, disposed on the outside of the anti-slip plates 100, with a bearing portion 256 provided on its inner peripheral portion and fixed to the bicycle body through a main body connecting portion 270; a fixing fastening portion 30, fastened to one side of the central shaft 10, and with a washer 300 engaged at a predetermined position on its outer peripheral surface; and a sealing portion 40, engaged on one outer peripheral portion of the housing 20, and with a threaded portion 400 on its inner peripheral surface.

[0010] The housing 20 includes: a main outer housing 220, on one side of which is a flange P with mating holes 210 formed at predetermined intervals, and on the other side of which are respectively provided oil injection holes 200 and oil drain holes 201, and a circular protrusion is formed in front of the oil injection holes 200 and oil drain holes 201, the inner circumferential surface of which is provided with a threaded groove, and the outer circumferential surface is provided with a fastening thread 230; an auxiliary outer housing 221, on one side of which is a flange P that can be mated with the flange P, with an opening in the center, and on the outer circumferential surface of the opening on the other side is provided with an anti-slip protrusion 222 that can be tightly attached to the anti-slip plate 100; and a bearing part 256, which is provided inside the main outer housing 220 and the auxiliary outer housing 221, and is provided with a bearing B inside, and is integrally formed with an outer ring body 250 and an inner ring body 260 with annular grooves 240 provided at the front and rear and at predetermined positions respectively; thereby constituting a bicycle drive device in which the wheel frame and the central shaft rotate as one.

[0011] One side of the fixing fastening part 30 is configured to be fastened from the outside using a fastening tool, and the other side is integrally formed with a bolt that can be fastened to the threaded part of the fastening groove 110 using the fastening tool; the above-mentioned purpose can be achieved by making the "bicycle drive device with the wheel frame and the central shaft rotating integrally" including the above structure as its structural feature.

[0012] The present invention, with the above-described structure, integrates the bicycle wheel frame and the central axle into one unit, unlike existing technologies. This allows the power generated by the user pedaling to simultaneously drive both the wheel frame and the central axle. Furthermore, two bearings are respectively installed on both sides of the central axle, thereby improving the rotational performance of the wheel, enhancing the bicycle's propulsion, and maintaining the stability of the user's driving force, enabling the user to ride the bicycle for extended periods. In addition, it improves the convenience and durability when replacing components such as bearings due to long-term bicycle use. Moreover, by enabling the bicycle wheel frame and central axle to rotate as a single unit, the wheel frame achieves relatively high stability and durability while improving the wheel's rotational performance.

[0013] The present invention has been illustrated and described above with reference to specific preferred embodiments. However, the present invention is not limited to the above embodiments. Various changes and modifications can be made by those skilled in the art without departing from the spirit of the present invention. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as a single unit. Figure 2 This is an exploded perspective view of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as an integral part. Figure 3 This is an exploded perspective view of the housing in the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally. Figure 4 This is a perspective view of the main outer housing in the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally. Figure 5 This is a sectional view of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as a whole, with the central shaft as the reference side. Figure 6 This is an overall sectional view and a partial enlarged sectional view of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as a single unit.

[0015] Symbol Explanation 10: Central shaft; 20: Housing; 30: Fixing fastener; 40: Sealing part; 100: Anti-movement plate; 101: Fixing hole; 110: Fastening groove; 200: Oil injection hole; 201: Oil drain hole; 210: Connection hole; 220: Main outer housing; 221: Auxiliary outer housing; 222: Anti-movement protrusion; 230: Fastening threaded part; 240: Annular groove; 250: Outer ring body; 256: Bearing part; 260: Inner ring body; 270: Body connection part; 300: Washer; 400: Connection threaded part; B: Bearing; H: Wheel frame; P: Flange; S: Spoke; V: Bolt. Detailed Implementation

[0016] According to the present invention, a bicycle drive device in which the wheel frame and the central shaft rotate integrally includes: a wheel frame H, on which an inner tube is detachably disposed on its outer peripheral surface; a central shaft 10, integrally fastened to the center of the wheel frame H, having fastening grooves 110 formed to a predetermined depth on the inner peripheral surfaces of both sides in a rod shape, anti-slip plates 100 disposed at predetermined intervals on the outer peripheral surfaces between the fastening grooves 110, and fixing holes 101 passing through the anti-slip plates 100 at predetermined intervals to allow spokes S to be fixedly engaged; a housing 20 disposed on the outside of the anti-slip plates 100, having a bearing portion 256 disposed on its inner peripheral portion and fixed to the bicycle body by a main body connecting portion 270; a fixing fastening portion 30 fastened to one side of the central shaft 10, and having a washer 300 engaged at a predetermined position on its outer peripheral surface; and a closing portion 40 engaged on one outer peripheral portion of the housing 20, and having a closing portion 30 on its inner peripheral surface. The housing 20 includes a main outer housing 220 with a flange P on one side having engagement holes 210 formed at predetermined intervals, and an oil injection hole 200 and an oil drain hole 201 respectively on both sides of the other side. A circular protrusion is formed in front of the oil injection hole 200 and the oil drain hole 201, and the inner circumferential surface of the protrusion is provided with a threaded groove, and the outer circumferential surface is provided with a fastening thread 230; an auxiliary outer housing 221 with a flange P on one side that can engage with the flange P, an opening in the center, and an anti-movement protrusion 222 that can be tightly attached to the anti-movement plate 100 on the outer circumferential part of the opening on the other side; and a bearing part 256, which is disposed inside the main outer housing 220 and the auxiliary outer housing 221, and has a bearing B disposed inside. It also integrally forms an outer ring body 250 and an inner ring body 260 with annular grooves 240 respectively at the front and rear and at predetermined positions.

[0017] For the embodiments of the present invention disclosed in this specification, the specific structural or functional descriptions are merely illustrative for the purpose of explaining the embodiments of the present invention. Since the embodiments of the present invention can be modified and have various forms, the present invention includes all modifications, equivalents, or substitutions contained within the spirit and technical scope of the present invention. Furthermore, the terms or words used in the specification and claims should not be limited to their ordinary or dictionary meaning, but should be interpreted according to the meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventors can appropriately define the terms and concepts in order to best explain their own invention. Therefore, the embodiments described in this specification and the structures shown in the accompanying drawings are only one of the most preferred embodiments of the present invention and do not fully represent the entire technical spirit of the present invention. It should be understood that various equivalents and modifications that can replace these embodiments may exist at the time of this application.

[0018] Furthermore, unless otherwise defined in the specification of this invention, all terms used herein, including technical or scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms identical to those defined in commonly used dictionaries shall be interpreted as having a meaning consistent with their meaning in the relevant technical context, and shall not be construed as having an idealized or overly formalized meaning unless explicitly defined herein.

[0019] Hereinafter, the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally, will be described in detail with reference to the accompanying drawings.

[0020] Figure 1 This is an overall schematic diagram of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as a single unit. Figure 2 This is an exploded perspective view of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally. Figure 3 This is an exploded perspective view of the housing in the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally. Figure 4 This is a perspective view of the main outer housing in the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate integrally. Figure 5 This is an exploded view of the bicycle drive mechanism of the present invention, in which the wheel frame and the central shaft rotate integrally, with the central shaft as the reference side. Figure 6 This is an overall sectional view and a partial enlarged sectional view of the bicycle drive device of the present invention, in which the wheel frame and the central shaft rotate as a single unit.

[0021] As shown in the attached diagram, the core of this invention lies in the fact that, unlike existing technologies, the central shaft 10, which is fixed to the center of the wheel frame H, drives integrally with the wheel frame H during bicycle operation. Based on the central shaft 10, housings 20 are respectively provided on both sides, and other components also adopt the same structure on both sides, based on the central shaft 10. Thus, the central shaft 10 and the wheel frame H maintain a simultaneous driving relationship, thereby improving the rotational performance of the wheel, enhancing the bicycle's propulsion, and maintaining the stability of the user's driving force. This allows the user to ride the bicycle for extended periods, while also improving the convenience and durability when replacing components such as bearings due to long-term use. Furthermore, it enhances the wheel frame's stability and durability.

[0022] The specific explanation is as follows: First, in a general bicycle with a wheel frame H having an inner tube detachably mounted on its outer circumference.

[0023] Reference numeral 10 in the attached figure indicates the central axis, as shown below. Figure 1 , Figure 2 and Figure 6As shown, the central shaft 10 is integrally fastened to the center of the wheel frame H, and fastening grooves 110 with threaded portions forming to a predetermined depth are respectively provided on the inner circumferential surfaces of the two rod-shaped sides. Anti-slip plates 100 are integrally provided on the outer circumferential surfaces between the fastening grooves 110 at predetermined intervals. Fixing holes 101 are provided on the anti-slip plates 100 at predetermined intervals so that the spokes S can be fixedly connected.

[0024] Reference numeral 20 in the attached figure indicates the casing, as shown in the figure. Figures 1 to 6 As shown, the housing 20, as the core structure of the present invention, is located on the outside of the anti-slip plate 100, and a bearing portion 256 is provided on its inner periphery, and is fixed to the bicycle body through the main body connecting portion 270.

[0025] Specifically, the housing 20 includes: Figure 4 As shown, the main outer casing 220 has a flange P on one side with mating holes 210 formed at predetermined intervals. On the other side, oil injection holes 200 and oil drain holes 201 are respectively provided on both sides. A circular protrusion is formed in front of the oil injection holes 200 and the oil drain holes 201. The inner circumferential surface of this protrusion has a threaded groove, and the outer circumferential surface has a fastening thread 230. Figure 3 , Figure 5 and Figure 6 As shown, the auxiliary outer housing 221 has a flange P on one side that can engage with the flange P, an opening in the center, and an anti-slip protrusion 222 on the outer periphery of the opening on the other side that can fit tightly against the anti-slip plate 100; and as shown Figure 3 The bearing portion 256 shown is disposed inside the main outer housing 220 and the auxiliary outer housing 221. It contains a bearing B and is integrally formed with an outer ring body 250 and an inner ring body 260, which are respectively provided with annular grooves 240 at the front and rear and at predetermined positions.

[0026] Reference numeral 30 in the attached figure indicates a fixed fastener, such as... Figure 2 , Figure 5 and Figure 6 As shown, the fixing fastening part 30 is fastened to one side of the central shaft 10, and a washer 300 is attached to a predetermined position on its outer peripheral surface. The fixing fastening part 30 includes: one side configured to be fastened from the outside using a fastening tool, and the other side integrally formed with a bolt that can be fastened to the threaded part of the fastening groove 110 using the fastening tool.

[0027] Reference numeral 40 in the attached figure indicates a closed portion, such as... Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the closure 40 is attached to one side of the outer periphery of the housing 20, and has a threaded portion 400 on its inner periphery.

[0028] Unspecified reference numeral V in the attached drawings indicates a standard bolt.

[0029] The assembly and working relationship of the present invention will be described below.

[0030] First, the central shaft 10 is attached to the wheel frame H, and then the spokes S are fixed and fastened to the fixing hole 101, thereby fixing and fastening the central shaft 10 to the wheel frame H.

[0031] In the above state, such as Figure 3 As shown, a bearing portion 256 containing a bearing B is housed within the housing 20, namely the main outer housing 220 and the auxiliary outer housing 221. The bearing portion 256 is fastened with annular grooves 240 connected to its front, rear, and between its front and rear sections. Then, the main outer housing 220 and the auxiliary outer housing 221 are joined by fasteners or the like through holes provided on the flange P.

[0032] The reason for providing the annular groove 240 is that, in this invention, although bearings B are positioned on both sides with the central shaft 10 as a reference, bearings B are also positioned above and below on one side. Therefore, the annular groove 240 is used to separate them, preventing the bearings B from being in close contact with each other. By adopting this structure, only the inner ring body 260 and the annular groove 240 of the bearing portion 256 rotate, while the outer ring body 250 is fixed to the housing 20. Meanwhile, as... Figure 6 As shown, the housing 20 is fixed by a main body connection portion 270 that is connected to the main body of the bicycle.

[0033] As described above, after the bearing portion 256 and the annular groove 240 are fastened to the housing 20, oil can be injected into and discharged from the bearing portion 256 using the oil injection hole 200 and oil drain hole 201 provided on the outer side of the housing 20. Furthermore, in the above state, the bolts of the fixing fastener 30 are inserted into the fastening groove 110 of the central shaft 10, and then the fixing fastener 30 is fastened and fixed to the central shaft 10 using fastening tools or the like.

[0034] The accompanying diagram illustrating this process is as follows: Figure 5 The attached diagram representing the combined state is as follows: Figure 6 .

[0035] Next, in the above state, the closing part 40 is fastened to the fastening thread 230 of the main outer housing 220 using the engaging thread 400.

[0036] The present invention, with the above-described structure, integrates the bicycle wheel frame and the central axle into one unit, unlike existing technologies. This allows the power generated by the user pedaling to simultaneously drive both the wheel frame and the central axle. Furthermore, two bearings are respectively installed on both sides of the central axle, thereby improving the rotational performance of the wheel, enhancing the bicycle's propulsion, and maintaining the stability of the user's driving force, enabling the user to ride the bicycle for extended periods. It also improves the convenience and durability of replacing components such as bearings when the bicycle is used for a long time. Moreover, by enabling the bicycle wheel frame and central axle to rotate as a single unit, the wheel frame achieves relatively high stability and improved durability while enhancing the wheel's rotational performance.

[0037] As described above, although the present invention has been illustrated with limited embodiments and accompanying drawings, the present invention is not limited to the above embodiments. Those skilled in the art to which this invention pertains can make various modifications and variations based on the above description.

[0038] Therefore, the technical concept of the present invention should be determined according to the stated claims, and it is obvious that all equivalent or similar modifications thereof fall within the scope of the technical concept of the present invention.

[0039] As described above, the bicycle drive device according to the present invention, in which the wheel frame and the central axle rotate integrally, improves the rotational performance of the wheel, enhances the propulsion of the bicycle, and maintains the stability of the user's driving force by providing two bearings on each side of the central axle, allowing the user to ride the bicycle for extended periods. Simultaneously, it improves the convenience and durability when replacing components such as bearings due to long-term bicycle use. Furthermore, by enabling the bicycle wheel frame and the central axle to rotate integrally, the wheel rotational performance is improved while simultaneously giving the wheel frame relatively high stability and enhanced durability. Therefore, this invention has high industrial applicability.

Claims

1. A bicycle drive device in which the wheel frame and central shaft rotate integrally, characterized in that, include: A wheel frame (H) has an inner tube detachably mounted on its outer circumferential surface; a central axle (10) is integrally fastened to the center of the wheel frame (H), and fastening grooves (110) with threads forming to a predetermined depth are respectively provided on the inner circumferential surfaces of the two rod-shaped sides; anti-slip plates (100) are provided at predetermined intervals on the outer circumferential surfaces between the fastening grooves (110), and fixing holes (101) are provided at predetermined intervals on the anti-slip plates (100) so that the spokes (S) can be fixedly connected; a housing ( 20), which is located on the outside of the anti-slip plate (100), has a bearing part (256) on its inner circumference, and is fixed to the bicycle body by the main body connecting part (270); a fixing fastener (30), which is fastened to one side of the central shaft (10), and has a washer (300) attached to a predetermined position on its outer circumference; and a sealing part (40), which is attached to one side of the outer circumference of the housing (20), and has a connecting thread part (400) on its inner circumference. The housing (20) encloses Includes: a main outer casing (220), one side of which is provided with flanges (P) having connecting holes (210) formed at predetermined intervals, and on the other side, oil injection holes (200) and oil drain holes (201) are respectively provided on both sides. A circular protrusion is formed in front of the oil injection holes (200) and the oil drain holes (201), and the inner circumferential surface of the protrusion is provided with a threaded groove, and the outer circumferential surface is provided with a fastening thread (230); an auxiliary outer casing (221), one side of which is provided with a flange (P) that can connect with the main outer casing (220) and the auxiliary outer casing (221). The flange (P) is connected to the flange (P), with an opening in the center and an anti-movement protrusion (222) that can fit tightly against the anti-movement plate (100) on the outer periphery of the opening on the other side; and a bearing part (256), which is provided on the inner side of the main outer shell (220) and the auxiliary outer shell (221), and has a bearing (B) inside, and is integrally formed with an outer ring body (250) and an inner ring body (260) having annular grooves (240) respectively at the front and rear and at predetermined positions.

2. The bicycle drive device with a wheel frame and central shaft rotating integrally according to claim 1, characterized in that, One side of the fixing fastener (30) is configured to be fastened from the outside using a fastening tool, and the other side is integrally formed with a bolt that can be fastened to the threaded portion of the fastening groove (110) using the fastening tool.

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