Patent Application
20200114683
The present invention relates to a bicycle, and more particularly to a bicycle wheel.
Please refer to
The hub 10 has a first hooking portion 11 and a second hooking portion 12. Some of the spokes 30 have two ends connected to the first connecting wall 221 and the second hooking portion 12, respectively, and the rest spokes 30 have two ends connected to the second connecting wall 222 and the first hooking portion 11, respectively.
In particular, one end of each of the spokes 30 connected to the connecting portion 22 has a first bending portion 31 and a second bending portion 32. Each of the first and second connecting walls 221, 222 is provided with a plurality of connecting holes 223, and the spokes 30 connected to the first connecting wall 221 and the second connecting wall 222 each have the first bending portion 31 inserted through one of the connecting holes 223, and then have the second bending portion 32 abutted against the first connecting wall 221 or the second connecting wall 222 to prevent the spokes 30 from disengaging from the respective connecting holes 223.
One end of each of the spokes 30 connected to the hub 10 has a third bending portion 33, and the first and second hooking portions 11, 12 are each provided with a plurality of hooking holes 101. The third bending portion 33 of each of the spokes 30 is inserted through one of the hooking holes 101, and the end of each of the spokes 30 has a locking bump 331 which has a diameter larger than the diameter of the hooking holes 101, so that, when inserted into the hooking holes 101, the spokes 30 will be blocked by the locking bumps 331 to prevent the spokes 30 from coining off the hooking holes 101.
In order to allow the user to adjust the tension of each of the spokes 30, each of the spokes 30 is further provided with a tension adjusting portion 34, and the user can adjust the length of the spokes 30 by rotating the tension adjusting portion 34, so that the tension between the wheel frame 20 and the hub 10 is further changed.
Since there is a bending angle A between the first bending portion 31 and the second bending portion 32, and between the second bending portion 32 and the third bending portion 33 of each of the spokes 30, when the tire contacts the ground and receives a force F1, the transmission direction of the force F1 is as shown in FIG. 1, the force F1 is transmitted from the tire to the wheel frame 20, and then is transmitted from the wheel frame 20 to each of the spokes 30. When the force F1 passes through each of the bending angles A, each of the bending angles A is not strong enough to withstand the supporting force F1, so that each of the spokes 30 is easily broken at a position of each of the bending angles A after a long time use. Besides, each of the tension adjusting portions 34 is provided on each of the spokes 30, the tension adjusting portion 34 is likely to be damaged when the force F1 passes through.
Further, the arrangement of the spokes 30 is generally as shown in
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However, every time the user needs to adjust the tension, the tire must be removed, and it seems that the work of adjusting the tension is particularly troublesome.
In view of this, it is necessary to improve the following points:
1. Each of the spokes has too many bending angles, the structure of the spoke is fragile and easily damaged.
2. The tension adjusting portion is disposed at the center of the spoke, resulting in a fragile structure and the spoke is more likely to be damaged.
3. The arrangement of the spokes causes the force transmission to be uneven, making the wheel frame easy to deform or bend.
4. The tire must be removed when adjusting the tension, which makes the user very troublesome when adjusting the tension.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
A first objective of the present invention is to solve the problem of structural fragility caused by spoke bending.
A second objective of the present invention is to solve the problem that the tension adjusting portion is disposed at the center of the spoke, resulting in a fragile structure.
A third objective of the present invention is to solve the problem that the arrangement of the spokes leads to a loss of uneven force transmission.
A fourth objective of the present invention is to solve the trouble that the tension adjusting portion is provided at the frame bottom, and it is necessary to remove the tire when adjusting the tension.
To achieve the above objectives, a bicycle wheel in accordance with the present invention comprises:
a hub with a hub spindle and two ears disposed on the hub spindle, the hub spindle having an axial direction;
a wheel frame having a connecting portion; and
a plurality of spokes each having a connecting section and two support sections, wherein the connecting section of each of the spokes is inserted through the connecting portion and divided along the axial direction into a first side and a second side, one of the two support sections is connected to the first side and one of the ears, another of the two support sections is connected to the second side and another of the ears, and the two support sections are arranged along the axial direction.
Preferably, the wheel frame has a frame lip portion, and a frame bottom between the connecting portion and the frame lip portion, the connecting portion has two connecting walls extending from the frame bottom, one end of the two connecting walls is connected to the frame bottom, and the other ends of the connecting walls are connected to each other, and each of the spokes is inserted in the two connecting walls at a position close to the frame bottom.
Preferably, the connecting portion has two connecting walls, and a support wall disposed between the two connecting walls, each of the two connecting walls has two ends connected to the frame bottom and the support wall, respectively, and the connecting section of each of the spokes abuts against the support wall.
Preferably, each of the support sections is provided with a connecting hole, the connecting section has a through hole running through two ends of the connecting section, one fixing bolt is inserted into one of the connecting holes and the through hole, and another fixing bolt is inserted into another of the connecting holes and the through hole, so that the two support sections are assembled to the connecting section.
Preferably, the connecting portion has one connecting wall, the wheel frame includes a frame bottom, and each of the spokes is inserted through the connecting wall.
Preferably, the hub spindle has two opposite ends along the axial direction, the two ears are disposed at the two opposite ends of the hub spindle, each of the ears has a plurality of support ribs and a surrounding wall, each of the support ribs has two ends fixed to the hub spindle and the surrounding wall, respectively, the support ribs circumferentially surround the hub spindle, so that the surrounding wall surrounds the hub spindle along a circumferential direction of the hub spindle, one end of each of the two support sections is provided with an outer thread, and an adjusting member with an adjusting portion and a threaded portion, the threaded portion includes an inner thread, the threaded portion of each of the adjusting members is inserted through the surrounding wall of the ears, and the inner thread of each of the adjusting members is engaged with the outer thread of the two support sections.
Preferably, the two support sections are disposed at two ends of the connecting section, and located at the first side and the second side of the connecting section.
Preferably, the connecting section and the two support sections are integrally formed together.
Preferably, each of the spokes further has a collar sleeved on each of the spokes, and located between the spokes and the wheel frame.
Preferably, a bending portion is formed at each of two connection positions between the connecting section and the two support sections, and each of the spokes has two said collars disposed at the two bending portions.
Thereby, the support sections of the spokes of the present invention are arranged side by side along the axial direction of the hub, and are connected to the spokes disposed on two sides of the wheel frame, so that, when a force is applied to the wheel frame and transmitted to each of the spokes, the support section of each of the spokes can share the force transmission, in this way, the support section of each spoke can withstand more stress, and each spoke bends only at the positions where the support sections are connected with the connecting section, the bending portions are few in number, and the support sections of the spokes are arranged side by side in the axial direction, so that the spokes can be prevented from being damaged.
The present invention adjusts the tension by an adjusting member disposed at one end of the support sections, the adjusting member is fixed to one end of the support sections, and the ear of the hub has a surrounding wall surrounding the hub. The adjusting member is fixed on the surrounding wall, so that the user can adjust the adjusting member directly on the hub without disassembling the tire, and the adjusting member is disposed at one end of each of the support sections, the structure is surrounded by the surrounding wall, which in turn makes the support sections less susceptible to damage.
These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
Referring to
The hub 40 includes a hub spindle 41 and two ears 42 disposed on the hub spindle 41. The hub spindle 41 has an axial direction X and two opposite ends along the axial direction X. The two ears 42 are disposed at the two opposite ends of the hub spindle 41, and each of the ears 42 has a plurality of support ribs 421 and a surrounding wall 422. Each of the support ribs 421 has two ends fixed to the hub spindle 41 and the surrounding wall 422, respectively. The support ribs 421 circumferentially surround the hub spindle 41, so that the surrounding wall 422 surrounds the hub spindle 41 along the circumferential direction of the hub spindle 41.
The wheel frame 50 has a connecting portion 51, a frame lip portion 52, and a frame bottom 53 between the connecting portion 51 and the frame lip portion 52. The connecting portion 51 has two connecting walls 511 extending from the frame bottom 53. One end of the two connecting walls 511 is connected to the frame bottom 53, and the other ends of the connecting walls 511 are connected to each other, so the frame bottom 53 generally has a triangular cross section as shown in
Each of the spokes 70 has a connecting section 71 and two support sections 72. The connecting section 71 is inserted through the two connecting walls 511 and provided with a first side 711 and a second side 712 along the axial direction X. It is to be noted that the first and second sides 711, 712 can be interpreted as two opposite ends of the connecting section 711, but are not limited to the ends, as long as the positions near the opposite ends of the connecting section 71 are considered as the first side 711 and the second side 712. One of the two support sections 72 is connected to the first side 711 and one of the ears 42, and the other of the two support sections 72 is connected to the second side 712 and the other of the ears 42, and the two support sections 72 are arranged along the axial direction X.
In the first embodiment, the two support sections 72 have one end connected to the first side 711 and the second side 712 of the connecting section 71, respectively, so that each of the spokes 70 is substantially U-shaped, and in this embodiment, the connecting section 71 and the two support sections 72 are integrally formed together.
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The connecting section 71 is connected to the two support sections 72, so that the force F2 can be dispersed along the first component of force F2′ and the second component of force F2″ to the two support sections 72 after passing through one of the bending portions 73, and thus the force F2 can be supported by the two support sections 72.
More preferably, since the two support sections 72 are arranged along the axial direction X, when the force F2 is transmitted to the hub 40 via the first component of force F2′ and the second component of force F2″, the force F2 is evenly transmitted along the axial direction X to the two ears 42 of the hub 40, so that the connecting portion 51 of the wheel frame 50 is evenly pressed, thereby preventing the wheel frame 50 from being bent or deformed.
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Preferably, the two collars 91 are sleeved at the bending portions 73 of the spoke 70, respectively to improve the strength of the bending portions 73 of each of the spokes 70, thereby making the spokes 70 stronger.
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While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
