The present disclosure relates generally to bicycle wheels and, more particularly, to a novel bicycle hub and spoke arrangement configured to provide increased resistance to the breakage of the spokes due to vibration and load cycling during wheel rotation under load.
This section provides background information related to the present disclosure which is not necessarily prior art.
Conventional bicycles are well known as having two wheels supported for rotation by a frame. Typically, the wheels are arranged with one behind the other. The frame includes handlebars for steering, a seat and opposing pedals. The opposing pedals are connected by a chain to the rear most wheel. When the rider pushes on the pedals, the chain moves thereby causing the rear most wheel to turn
The bicycle stays upright while moving forward by being steered so as to keep its center of mass over the wheels. The rider usually provides the steering.
It is known for the wheels to be formed with a hub and spoke arrangement. In this arrangement, a plurality of spokes connect to opposing flanges of the hub and extend radially and connect to a common outer rim. The spokes are tensioned and configured to hold the hub and transfer the weight of the rider and the bicycle to the wheel. In doing so, the plurality of spokes provide stiffness in the wheel making the wheel more efficient when spinning.
In certain instances, it is known that spokes can fail. There are many causes of spoke failure including the non-limiting examples of uneven tension, stress incurred during hard riding, mixing different types of spokes, impact from potholes, worn and/or aged spokes, load cycling during wheel rotation under load, excess weight of rider and/or bicycle, types of spoke materials and the like.
In other instances, it is known that spokes can fail due to the phenomenon known as “shimmy.” Simply, bicycle shimmy can be caused by the left to right and right to left pull of the spokes and the resulting vibration caused therein.
It would be advantageous if the hub and spoke arrangements of bicycles could be improved to better address spoke failure and shimmy.
It should be appreciated that this Summary is provided to introduce a selection of concepts in a simplified form, the concepts being further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of this disclosure, nor is it intended to limit the scope of the bicycle hub and spoke arrangement.
The above objects as well as other objects not specifically enumerated are achieved by a novel bicycle hub and spoke arrangement. The novel bicycle hub and spoke arrangement includes a bicycle axle supported for rotation by a hub shaft. The bicycle axle is configured to support a bicycle wheel for rotation. A plurality of flanges extend radially from the hub shaft. Each of the plurality of flanges has a plurality of circumferentially oriented apertures. A plurality of spokes, each having a first end, an opposing second end and a body extending therebetween. The second end of each of the plurality of spokes is connected to an outer rim. The outer rim is configured to support a tire. The first end of each of the plurality of spokes is connected to one of the plurality of circumferentially oriented apertures of the plurality of flanges in a manner such as to create three areas of contact between the first end of each of the plurality of spokes and the associated flange, the three areas of contact configured to strengthen a J bend area of the spoke and address spoke failure and shimmy.
The above objects as well as other objects not specifically enumerated are also achieved by a novel method of arranging a bicycle hub with a plurality of spokes. The novel method including the steps of supporting a bicycle axle for rotation with a hub shaft, the bicycle axle configured to support a bicycle wheel for rotation, forming the hub shaft with a plurality of radially extending flanges, each of the plurality of flanges having a plurality of circumferentially oriented apertures, connecting a second end of a plurality of spokes to an outer rim, the outer rim configured to support a tire, each of the plurality of spokes having an opposing first end and a body extending between the first end and the second end, and connecting the first end of each of the plurality of spokes to one of the plurality of flanges in a manner such as to create three areas of contact between the first end of each of the plurality of spokes and the associated flange, the three areas of contact configured to strengthen a J bend area of the spoke and address spoke failure and shimmy.
Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
The following description of technology is merely exemplary in nature of the subject matter, manufacture and use of one or more inventions, and is not intended to limit the scope, application, or uses of any specific invention claimed in this application or in such other applications as may be filed claiming priority to this application, or patents issuing therefrom. Regarding methods disclosed, the order of the steps presented is exemplary in nature, and thus, the order of the steps can be different in various embodiments, including where certain steps can be simultaneously performed, unless expressly stated otherwise. “A” and “an” as used herein indicate “at least one” of the item is present; a plurality of such items may be present, when possible. Except where otherwise expressly indicated, all numerical quantities in this description are to be understood as modified by the word “about” and all geometric and spatial descriptors are to be understood as modified by the word “substantially” in describing the broadest scope of the technology. “About” when applied to numerical values indicates that the calculation or the measurement allows some slight imprecision in the value (with some approach to exactness in the value; approximately or reasonably close to the value; nearly). If, for some reason, the imprecision provided by “about” and/or “substantially” is not otherwise understood in the art with this ordinary meaning, then “about” and/or “substantially” as used herein indicates at least variations that may arise from ordinary methods of measuring or using such parameters.
Although the open-ended term “comprising,” as a synonym of non-restrictive terms such as including, containing, or having, is used herein to describe and claim embodiments of the present technology, embodiments may alternatively be described using more limiting terms such as “consisting of” or “consisting essentially of” Thus, for any given embodiment reciting materials, components, or process steps, the present technology also specifically includes embodiments consisting of, or consisting essentially of, such materials, components, or process steps excluding additional materials, components or processes (for consisting of) and excluding additional materials, components or processes affecting the significant properties of the embodiment (for consisting essentially of), even though such additional materials, components or processes are not explicitly recited in this application. For example, recitation of a composition or process reciting elements A, B and C specifically envisions embodiments consisting of, and consisting essentially of, A, B and C, excluding an element D that may be recited in the art, even though element D is not explicitly described as being excluded herein.
As referred to herein, disclosures of ranges are, unless specified otherwise, inclusive of endpoints and include all distinct values and further divided ranges within the entire range. Thus, for example, a range of “from A to B” or “from about A to about B” is inclusive of A and of B. Disclosure of values and ranges of values for specific parameters (such as amounts, weight percentages, etc.) are not exclusive of other values and ranges of values useful herein. It is envisioned that two or more specific exemplified values for a given parameter may define endpoints for a range of values that may be claimed for the parameter. For example, if Parameter X is exemplified herein to have value A and also exemplified to have value Z, it is envisioned that Parameter X may have a range of values from about A to about Z. Similarly, it is envisioned that disclosure of two or more ranges of values for a parameter (whether such ranges are nested, overlapping or distinct) subsume all possible combination of ranges for the value that might be claimed using endpoints of the disclosed ranges. For example, if Parameter X is exemplified herein to have values in the range of 1-10, or 2-9, or 3-8, it is also envisioned that Parameter X may have other ranges of values including 1-9, 1-8, 1-3, 1-2, 2-10, 2-8, 2-3, 3-10, 3-9, and so on.
When an element or layer is referred to as being “on,” “engaged to,” “connected to,” or “coupled to” another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to,” “directly connected to” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
Spatially relative terms, such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The description and figures disclose a novel bicycle hub and spoke arrangement (hereafter “hub and spoke arrangement”). Generally, the novel hub and spoke arrangement provides three areas of contact between portions of a spoke and a flange extending from the hub. The first area of contact is between a head of the spoke and the flange. The second area of contact occurs between an arcuate inner radius segment of the spoke commonly referred to as the “J” bend area and the flange. The third area of contact occurs between an extension segment of the spoke (downstream from the J bend area) and another area of the flange. It is believed the three areas of contact arrangement between the flanges of the hub and each of the spokes advantageously provides increased resistance to the breakage of the spokes at the J bend area due to vibration and load cycling during wheel rotation under load and also address shimmy.
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In accordance with the invention, a novel hub and spoke arrangement for a bicycle is presented. Generally, the novel hub and spoke arrangement provides three areas of contact between portions of a spoke and a flange extending from the hub. Without being held to the theory, it is believed the additional third area of contact contributes to the prevention of vibration-related breakage of the spokes at the J bend section due to vibration and load cycling during wheel rotation under load. Advantageously, the three areas of contact arrangement facilitate the use of low spoke counts, with each of the spokes under extremely high static tensions. The use of low spoke counts, each at extremely high static tensions, provides an aerodynamic advantage not seen in conventional hub and spoke arrangements having higher spoke counts with lower spoke static tensions. As will be discussed in more detail below, it should be appreciated that the additional third area of contact can be formed in various manners.
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As another non-limiting example of forming the smaller arcuate inner radius, it is contemplated that the spokes can be pre-formed prior to assembly with the hub.
While the embodiment of the novel hub and spoke arrangement shown in
The outer edge 296 includes a nub 298, configured to extend from the outer face 292 in a direction toward the extension segment 254. In an installed orientation, the nub 298 contacts the extension segment 254 of the spoke 214, thereby forming a third of contact 264 between the spoke 214 and the first flange 224.
In the embodiment illustrated in
Referring to the embodiments shown in
Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail. Equivalent changes, modifications and variations of some embodiments, materials, compositions and methods can be made within the scope of the present technology, with substantially comparable results.
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