阅读说明：本技术 自行车轮组 (Bicycle wheel set ) 是由 陈建璋 于 2018-06-01 设计创作，主要内容包括：本发明揭示一种自行车轮组,包含：轮框、轮轴及N组辐条组。各辐条组各具有四支辐条。轮框借由辐条组与轮轴连接。借此能降低侧风阻力,使自行车容易维持速度以及车身稳定度。(The present invention discloses a bicycle wheel set, comprising: wheel frame, shaft and N group spoke groups. Each spoke set has four spokes. The wheel frame is connected with the wheel shaft through the spoke set. Therefore, the side wind resistance can be reduced, and the bicycle can easily maintain the speed and the stability of the bicycle body.)

1. A bicycle wheel assembly, comprising:

A wheel frame;

A wheel axle; and

The wheel frame is connected with the wheel shaft through the N groups of spoke groups.

2. The bicycle wheelset as defined in claim 1, wherein each spoke set is staggered with respect to an adjacent spoke set.

3. The bicycle wheelset as defined in claim 2, wherein the nth group of spokes is staggered with respect to the N-1 st, N-2 nd and N +1 st, N +2 nd groups of spokes.

4. The bicycle wheelset as claimed in claim 3, wherein the 3 rd and 4 th spokes of the Nth spoke set are interlaced with the 1 st and 2 nd spokes of the (N + 1) th spoke set, the 3 rd and 4 th spokes of the Nth spoke set are interlaced with the 1 st and 2 nd spokes of the (N + 2) th spoke set, the 1 st and 2 nd spokes of the Nth spoke set are interlaced with the 3 rd and 4 th spokes of the (N-1) th spoke set, and the 1 st and 2 nd spokes of the Nth spoke set are interlaced with the 3 rd and 4 th spokes of the (N-2) th spoke set.

5. The bicycle wheelset as defined in claim 2, wherein the four spokes of each spoke set are further divided into a first side set spoke and a second side set spoke, and each of the first side set spoke and the second side set spoke comprises two spokes.

6. The bicycle wheelset as defined in claim 5, wherein the first side set spoke of the Nth spoke set is staggered with respect to the first side set spoke of the N-1 spoke set and the first side set spoke of the N-2 spoke set by one spoke.

7. The bicycle wheelset as defined in claim 5, wherein the second side group spoke of the Nth group spoke set is staggered with respect to the second side group spoke of the N-1 group spoke set and the second side group spoke of the N-2 group spoke set by one spoke.

8. The bicycle wheel set as in claim 1, wherein each of said spoke sets is out of contact with an adjacent one of said spoke sets.

9. The bicycle wheel set according to claim 8, wherein each of the spokes has a gap therebetween.

10. Bicycle wheel group according to claim 1, wherein the number of spoke groups is six.

Technical Field

The present invention relates to a wheel set, and more particularly to a wheel set for a bicycle.

Background

The wind resistance is one of the biggest enemies of all racing sports, and particularly in the field of bicycles, because the competition is carried out completely by manpower, the speed and the stability can be obviously increased by reducing the wind resistance.

the posture of the bicycle frame is fixed during advancing, improved data can be obtained quickly from wind tunnel tests easily, and most bicycle manufacturers are willing to invest in the research and development of the bicycle frame. However, the wind resistance change of the spokes of the bicycle wheel set during traveling is dynamic, wind is from any angle in all directions without orientation, different wind resistance data can be generated under the conditions of different speeds and different wind cutting angles, most bicycle manufacturers are not willing to spend on thinking of a spoke weaving method to break through the design, and the result can be obtained due to the fact that the process consumes financial resources and time, and huge fund support and continuous tests are needed.

Referring to FIG. 1, a front view of a first shape of a conventional bicycle wheel set is shown. The conventional bicycle wheel set of the first shape has a plurality of spokes 91 radiating from a rim 90 toward the axial center, and the spokes 91 are arranged at equal intervals and at equal angles.

Referring to fig. 2, a front view of a second shape of a conventional bicycle wheel set is shown. The conventional bicycle wheel set of this second shape has a plurality of spokes 92 radiating from a rim 90 toward the axle center, the spokes 92 being connected to the axle center at different angles, but maintaining equal distances therebetween, and the intersecting spokes 92 being in overlapping contact with each other.

Wind resistance of different spoke weaving methods really has certain influence on riding speed through wind tunnel tests, and the stability of a rider and a vehicle body is related. There is therefore still a need for further improvements in the design of bicycle wheel sets to reduce wind resistance.

Disclosure of Invention

The invention aims to provide a bicycle wheel set, which can reduce wind resistance, improve the efficiency and stability of bicycle running, reduce the riding fatigue of a rider and increase the safety of the whole bicycle running.

Another object of the present invention is to provide a bicycle wheel set that allows the rider to save more energy consumption while using the same power output.

It is still another object of the present invention to provide a bicycle wheel set that can reduce wind disturbance from non-normal wind.

Another object of the present invention is to provide a bicycle wheel set that can reduce the overall wind resistance.

To achieve the foregoing and other objects, the present invention provides a bicycle wheel set, comprising: a bicycle wheel assembly, comprising: a wheel frame; a wheel axle; and N groups of spoke groups, each spoke group is provided with four spokes, N is a natural number which is more than or equal to 3, and the wheel frame is connected with the wheel shaft through the N groups of spoke groups.

In an embodiment of the present invention, each spoke group is staggered with adjacent spoke groups.

In one embodiment of the present invention, the Nth spoke set is interlaced with the N-1 th, N-2 th, and the (N + 1) th, N +2 th spoke sets.

in an embodiment of the present invention, the 3 rd and 4 th spokes of the Nth spoke set are interlaced with the 1 st and 2 nd spokes of the (N + 1) th spoke set, the 3 rd and 4 th spokes of the Nth spoke set are interlaced with the 1 st and 2 nd spokes of the (N + 2) th spoke set, the 1 st and 2 nd spokes of the Nth spoke set are interlaced with the 3 rd and 4 th spokes of the (N-1) th spoke set, and the 1 st and 2 nd spokes of the Nth spoke set are interlaced with the 3 rd and 4 th spokes of the (N-2) th spoke set.

In an embodiment of the present invention, the four spokes of each spoke set are further divided into a first side set of spokes and a second side set of spokes, and each of the first side set of spokes and the second side set of spokes includes two spokes.

In one embodiment of the present invention, the first side group spoke of the nth group spoke set is staggered with one spoke of the first side group spoke of the N-1 th group spoke set and one spoke of the first side group spoke of the N-2 th group spoke set.

In an embodiment of the present invention, the second side group spoke of the nth group spoke set is staggered with one spoke of the second side group spoke of the N-1 th group spoke set and one spoke of the second side group spoke of the N-2 th group spoke set.

In an embodiment of the present invention, each spoke group is not in contact with an adjacent spoke group.

In an embodiment of the present invention, a gap is formed between each of the spokes.

In an embodiment of the present invention, the number of spoke groups is six.

Drawings

FIG. 1 is a front elevational view of a first shape of a conventional bicycle wheel set.

FIG. 2 is a second shaped front elevational view of a conventional bicycle wheel set.

Fig. 3 is a schematic direction angle diagram of a bicycle wheel set for wind tunnel testing according to an embodiment of the present invention.

FIG. 4 is an assembled front elevational view of the bicycle wheel set in accordance with the embodiment of the present invention.

FIG. 5 is an assembled perspective view of the bicycle wheel set in accordance with the embodiment of the present invention.

FIG. 6 is an enlarged, partial front elevational view of the bicycle wheel set in accordance with the embodiment of the present invention.

Fig. 7 is an X-X view of fig. 6.

FIG. 8 is an enlarged, partial front elevational view of the assembled bicycle wheel set in accordance with the present invention.

FIG. 9 is an enlarged partial perspective view of the combination of the bicycle wheel set of the present invention.

FIG. 10 is a line graph comparing test data for a bicycle wheel set according to an embodiment of the present invention with that of a conventional bicycle wheel set.

Detailed Description

The following detailed description refers to representative embodiments of the accompanying drawings in which similar or identical elements are numbered alike. The embodiments described below are intended to cover alternatives, modifications, or equivalents within the spirit and scope of the embodiments as defined by the scope of the appended claims. It should be understood that the directional terms used in the present invention are merely used to describe the present invention with reference to the directions of the drawings, and are not intended to limit the present invention. Furthermore, when the following description describes a feature, element, or means in one embodiment, those skilled in the art can, using the knowledge, recognize that the feature, element, or means can be implemented in other embodiments without the description, or with equivalents; certain features that are described in the context of separate embodiments can also be implemented in combination in other embodiments; conversely, various features that are described in the context of multiple embodiments can also be implemented in other separate or multiple embodiments separately or in any suitable subcombination.

Referring to fig. 4 and 5, fig. 4 is an assembled front view of a bicycle wheel set according to an embodiment of the present invention, and fig. 5 is an assembled perspective view of a bicycle wheel set according to an embodiment of the present invention. The bicycle wheel set of the present embodiment includes a wheel frame 20, a wheel axle 10 and N spoke sets (e.g., six spoke sets a-F shown in fig. 4). Wherein each spoke group of the N spoke groups has four spokes 30. The wheel frame 20 is connected to the wheel axle 10 by the N spoke sets, and N is a natural number greater than or equal to 3. In the present embodiment, as shown in the figure, there are six spoke groups, i.e., spoke group a, spoke group B, spoke group C, spoke group D, spoke group E, and spoke group F, and the number of the spoke groups is preferably six, and the four spokes 30 of each spoke group are centrally arranged to separate the adjacent spoke groups.

The spirit of the embodiment of the present invention is that, by N spoke groups each having four spokes 30, the bicycle wheel set disclosed in the embodiment of the present invention can generate a "face" air wall, which can form a protective face due to the pressure difference between the air wall and the outside air, thereby reducing the wind disturbance of non-positive wind, thereby reducing the overall wind resistance, reducing the riding fatigue of a rider, and increasing the safety of the overall bicycle.

The spirit of the present invention is that, by N spoke groups each having four spokes 30, no matter the spoke groups are staggered or not, due to the structural design of the four spokes 30 of the group, one air protection surface can be generated, thereby reducing the wind disturbance of non-positive wind, thereby reducing the overall wind resistance, reducing the riding fatigue of the rider, and increasing the safety of the whole bicycle.

Details of the protective surface of the embodiment of the present invention that can generate one air by using N sets of spokes 30 each having four spokes are as follows:

Referring to fig. 6 and 7, fig. 6 is an enlarged partial front view of the bicycle wheel set in accordance with the embodiment of the present invention, and fig. 7 is an X-X view of fig. 6. Because the spokes 30 are plural and staggered, fig. 6 only shows the spoke set a, the spoke set B and the spoke set C for illustration. The four spokes 30 of spoke group a are spoke a1, spoke a2, spoke a3 and spoke a4 in the clockwise direction. The four spokes 30 of spoke group B are spoke B1, spoke B2, spoke B3 and spoke B4 in that order in a clockwise direction. The four spokes 30 of spoke set C are spoke C1, spoke C2, spoke C3 and spoke C4 in that order in a clockwise direction.

As shown in fig. 6, each spoke set is staggered with respect to an adjacent spoke set. That is, spoke set a is staggered with spoke set B, and spoke set B is staggered with spoke set C. The invention refers to the adjacent spoke groups being staggered with the spoke groups, which means that at least one spoke 30 of the four spokes 30 of each spoke group is staggered with each other in the front view direction.

The forward direction refers to a forward direction with reference to the drawing.

The interleaving mode is as follows: the 3 rd and 4 th spokes of the Nth spoke group are staggered with the 1 st and 2 nd spokes of the (N + 1) th spoke group, the 3 rd and 4 th spokes of the Nth spoke group are staggered with the 1 st and 2 nd spokes of the (N + 2) th spoke group, the 1 st and 2 nd spokes of the Nth spoke group are staggered with the 3 rd and 4 th spokes of the (N-1) th spoke group, and the 1 st and 2 nd spokes of the Nth spoke group are staggered with the 3 rd and 4 th spokes of the (N-2) th spoke group.

Taking fig. 6 and 8 as an example, spoke a3 and spoke a4 of spoke group a and spokes B1 and B2 of spoke group B are staggered with each other in the front view direction, spoke a3 and spoke a4 of spoke group a and spokes C1 and C2 of spoke group C are staggered with each other in the front view direction, spoke a1 and spoke a2 of spoke group a and spokes F3 and F4 of spoke group F are staggered with each other in the front view direction, and spoke a1 and spoke a2 of spoke group a and spokes E3 and E4 of spoke group E are staggered with each other in the front view direction.

Preferably, the four spokes 30 of each spoke set are further divided into a first side set spoke S1 and a second side set spoke S2, and the first side set spoke S1 and the second side set spoke S2 each include two spokes 30. Referring to fig. 7, taking the spoke group a as an example, the spoke a1 and the spoke a3 of the spoke group a are located on the first side group spoke S1 (left side of the drawing), and the spoke a2 and the spoke a4 of the spoke group a are located on the second side group spoke S2 (right side of the drawing), so that the four spokes 30, namely the spoke a1, the spoke a2, the spoke a3 and the spoke a4 of the spoke group a are staggered on the left side and the right side of the split axle 10, and the tension and the stress are uniformly dispersed. And a gap g is formed between each spoke 30 and each spoke 30, and the spokes 30 are not in mutual contact, so that gas can pass through the gap g, and in the structural design of the four spokes 30 of the group, a single air protection surface can be generated, and meanwhile, the overlapped contact points can be prevented from forming a single large section area, so that the wind resistance is reduced.

more preferably, the Nth spoke set is interlaced with the spoke sets of the (N-1) th, the (N-2) th, the (N + 1) th and the (N + 2) th groups. Referring to FIG. 8, a front view of the assembled bicycle wheel set of the present invention is shown in a partially enlarged view. Taking the spoke group A as an example of the Nth group of spoke groups, the spoke group F is the Nth-1 group, the spoke group E is the Nth-2 group, the spoke group B is the Nth +1 group, and the spoke group C is the Nth +2 group.

Referring to fig. 8, the spokes a1 and a2 of the nth group a are interleaved with the spokes F3 and F4 of the N-1 th group F, the spokes a1 and a2 of the nth group a are interleaved with the spokes E3 and E4 of the N-2 th group E, the spokes a3 and a4 of the nth group a are interleaved with the spokes B1 and B2 of the N +1 th group B, and the spokes a3 and a4 of the nth group a are interleaved with the spokes C1 and C2 of the N +2 th group C. Therefore, each spoke group is partially staggered with the adjacent spoke groups and the spoke groups separated by one spoke group, so that the tension and the stress can be uniformly dispersed.

Wherein the first side group spoke S1 of the nth group spoke set is staggered by one spoke 30 from each of the first side group spoke S1 of the N-1 th group spoke set and the first side group spoke S1 of the N-2 th group spoke set. With reference to the foregoing description, the singular spokes a1, a3, b1, b3 …, etc. of each spoke set are all located on the first side set spoke S1, whereas the plural spokes a2, a4, b2, b4 …, etc. of each spoke set are all located on the second side set spoke S2. With continued reference to FIG. 8, spoke a1 of group N spoke set A is interleaved with spoke F3 of group N-1 spoke set F, and interleaved with spoke E3 of group N-2 spoke set E. Therefore, each spoke group is staggered with one spoke 30 from the adjacent spoke group and the spoke group separated by one spoke group, so that the tension and the stress can be uniformly dispersed.

Wherein the second side group spoke S2 of the nth group spoke set is staggered by one spoke 30 from the second side group spoke S2 of the N-1 group spoke set and the second side group spoke S2 of the N-2 group spoke set. Referring also to FIG. 8, spoke a2 of group N spoke set A is interleaved with spoke F4 of group N-1 spoke set F and with spoke E4 of group N-2 spoke set E. Therefore, each spoke group is staggered with one spoke 30 from the adjacent spoke group and the spoke group separated by one spoke group, so that the tension and the stress can be uniformly dispersed.

Referring to fig. 9, there is shown an enlarged perspective view of a portion of the combination of the bicycle wheel set in accordance with the embodiment of the present invention. As shown, each spoke group is not in contact with the adjacent spoke group, and a gap is formed between each spoke 30 and the spoke 30.

In summary, the bicycle wheel set of the embodiment of the present invention has the following features:

1. each spoke group has four spokes, and each spoke group is staggered with the adjacent spoke group.

2. Each spoke group is not in contact with the adjacent spoke groups.

3. The spokes do not contact each other.

The bicycle wheel set specially entrusts a financial group legal people bicycle and Health technology Industry research and development Center (Cycling & Health technology R & D Center) to carry out wind tunnel tests, and the same wind tunnel tests are carried out on the existing bicycle wheel set in the embodiment of the invention for comparison. The detection mode is a wind group generated by side wind which deflects at an angle of 0-15 degrees at the left side and the right side at the speed of 48 kilometers per hour (13.3 meters per second). This is because, during riding, a rider may not be able to maintain a positive 0 degrees, which is mostly 0 to 15 degrees of side-to-side yaw, i.e., -15 to +15 degrees.

Fig. 3 is a schematic view of a direction angle of the bicycle wheel set for wind tunnel test according to the embodiment of the invention. The wind tunnel test is provided with a test bench 40 in a test field, and a tested wheel set 42 is fixed above the test bench 40 through a fixing frame 41. During testing, the wind speed is fixed at 13.3 meters per second, the testing table 40 is respectively converted into different angles to align with the wind direction of the wind tunnel for testing, so that the tested wheel set 42 respectively obtains test data of various wind directions such as a front normal wind direction W0, a right side wind direction W1 and a left side wind direction W2, the right side wind direction W1 has an angle deviation of +15 degrees compared with the front normal wind direction W0, the left side wind direction W2 has an angle deviation of-15 degrees compared with the front normal wind direction W0, and the test data of +5 degrees, +10 degrees, -5 degrees and-10 degrees are respectively obtained by slightly adjusting the angle of the testing table 40.

The resistance meter of the wind resistance can be obtained through experiments, and is shown in tables 1 and 2.

Table 1: wind tunnel test data of bicycle wheel set

Table 2: wind tunnel test data of existing bicycle wheel set

The data in tables 3 to 4 were obtained by comparing the above data, and a test result line chart of fig. 10 was prepared.

FIG. 10 is a line graph of the test results, B1-Y is data for a bicycle wheel set according to an embodiment of the present invention, and B2-Y is data for a conventional wheel set.

The resistance value in grams is converted into the resistance value in newtons. The formula can be used: newton N is resistance value 0.0098 and newton N is wind speed M is wattage W seconds S, the wattage value is obtained. Wherein the wind speed M is measured at 13.3M/s and the wattage W is the consumption per second. The data as in tables 3, 4 and 5 below were obtained.

Table 3: wind tunnel test data of bicycle wheel set

B1	15 degrees	10 degree	5 degree	0 degree	-5 degree	10 degrees below zero	15 degrees below zero
								Resistance value	546.48	645.54	670.38	677.38	500.76	484.94	428.87
Newton	5.35	6.32	6.56	6.63	4.9	4.75	4.2
								Wattage	71.15	84.05	87.42	88.17	65.17	63.17	55.86

Table 4: wind tunnel test data of existing bicycle wheel set

B2	15 degrees	10 degree	5 degree	0 degree	-5 degree	10 degrees below zero	15 degrees below zero
								Resistance value	656.08	657.78	667.11	660.89	587.15	555.24	559.45
Newton	6.43	6.44	6.54	6.47	5.75	5.44	5.48
								Wattage	85.5	85.65	86.98	86.05	76.47	72.35	72.88

Table 5: resistance value difference meter

From the difference table of resistance values in table 5, it can be deduced that if the difference of the data of positive 15 degree angle is calculated to be 14 w, B1 (the embodiment of the present invention) reduces the power consumption by 14 w per second, and the difference of the power consumption and the speed between the two is very obvious.

For example, when the same force output (e.g., 100 watts) is compared with one hour of riding time, the difference of 14 watts per second is sufficient to save 50400 watts for the rider in 60 minutes, and such difference in performance clearly shows that the performance of the four-hole centralized spoke-knitting bicycle wheel set according to the embodiment of the present invention will revolutionize the bicycle wheel set.

For another example, in a 100 km game, when an amateur player rides at a speed of 25 km/h, the energy savings of 201600 watts can be achieved, and the energy savings is 14% compared to the existing wheelset. In other words, the user can be led to one more group.

In summary, in the embodiment of the present invention, by using the staggered spoke knitting method, two sides of the wheel set can respectively generate a "face" air wall, and the air wall can form a protective face due to the air pressure difference with the outside air, so as to reduce the lateral wind interference, and further reduce the overall wind resistance, and a gap is formed between each of the spokes 30 and the spoke 30, so as to reduce the lateral wind resistance, reduce the riding fatigue of the rider, and increase the overall safety of the bicycle.

The lateral wind resistance surface left by deducting the height of the wheel frame 20 in the design of the wheel set is formed by the spokes 30, the area generated by the spokes 30 during rotation is multiple times of that of the wheel frame 20, the area generated by the spoke surface formed by the spokes 30 is large, and a large wind resistance effect can be generated by slight aerodynamic improvement.

The present invention has been disclosed in terms of the preferred embodiments, but is not limited thereto. It will be clear to a person skilled in the art that the present invention is not restricted to details of the foregoing illustrative embodiments, that the present invention can be embodied in other specific forms without departing from the essential spirit of the invention, that the embodiments are illustrative only and not limiting of the invention, that the invention is to be interpreted as based on the scope of the appended claims rather than on the foregoing description, and that all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

[ notation ] to show

10 wheel axle

20 wheel frame

30 spoke

40 test bench

41 fixed mount

42 measured wheel group

90 wheel frame

91 spoke

92 spoke

A-F spoke group

a 1-a 4 spoke

b 1-b 4 spoke

c 1-c 4 spoke

e 3-b 4 spoke

f 1-f 4 spoke

g gap

S1 first side group spoke

S2 second side group spoke

Forward positive wind direction of W0

W1 right side wind direction

W2 left side wind direction