JP3495634B2 - Sports type bicycle wheels - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of bicycle wheels, and more specifically, it is possible to increase strength and rigidity while suppressing the air resistance received by the spokes of the bicycle wheel to a minimum. The present invention relates to sports type bicycle wheels.

[0002]

2. Description of the Related Art Conventionally, a bicycle wheel has a circular rim, a hub located at the center of the rim, and a spoke for connecting the rim and the hub. In addition to the spoke, a rim is used. There is a disc-shaped member provided between the hub and the hub in a connected state (also called "disc type"). However, since the disc type bicycle wheel has a problem that it is heavy and easily sways with respect to a side wind from a side surface, a bicycle wheel including the spokes is generally used.

A bicycle wheel provided with this type of spoke is, for example, Japanese Patent Laid-Open No. 56-154301, Japanese Patent Laid-Open No. 61-261101, or No. 30186.
As disclosed in Registered Utility Model Publication No. 67, etc., it is widely known that the spokes are linear, and that a plurality of left and right sides of the hub and the rim are connected in a radial direction at a predetermined angle. There is. In addition, as the connection state of the spokes, a set of 8 pieces that opens the middle 6 pieces and intersects the 8th pieces, and a tangent piece that opens 4 pieces of the middle and crosses the 6th pieces,
There are radial groups that are assembled in a radial pattern. The number of spoke holes in the rim is mainly 32 or 36, and many of them are formed at a predetermined angle from the inner peripheral portion or side surface portion of the rim. The radial set has the advantage that the spokes can be shortened.

[0004]

By the way, it is preferable that the number of the spokes of the bicycle wheel provided with the above-mentioned conventional spokes is small from the viewpoint of the air resistance received by the spokes. On the other hand, when the number of spokes is reduced, the bicycle wheel lacks strength and rigidity.

Therefore, a general riding-type bicycle and the above-mentioned conventional Japanese Patent Laid-Open Nos. 56-154301 and 61.
The bicycle wheel of Japanese Patent No. 261101 is devised to enhance the strength and rigidity by arranging the linear spokes in an intersecting shape at their substantially central portions. However, when the straight spokes are arranged in an intersecting manner in this way, as the bicycle speeds up , the air resistance at this intersecting portion becomes large, which gives a large load to the driver.
Will be obtained . Therefore, time trial race, is not suitable as a bicycle wheel of a sports type of road race, triathlon, etc., in particular, as these front wheel is not suitable.

On the other hand, the above registered utility model publication No. 30186
No. 67 bicycle wheel is disclosed in which one of the spokes is arranged in a straight line at a predetermined angle between the hub and the rim. However, in the case where one linear spoke is arranged at a predetermined angle as described above, the air resistance received by the spoke can be reduced by reducing the total number of the spokes. Not enough strength or rigidity. For example, if a large load is applied by the leg power of a bicycle racer, there is a risk that the spokes may break. In addition to this strength, the spokes are bent, and conversely there is a large loss in air resistance.

Therefore, the present invention is intended to improve the connection strength of the spokes and the strength and rigidity of the bicycle wheel while reducing the air resistance received by the spokes of the sports type wheel for a vehicle. It is an object of the present invention to provide a sports-type wheel for automobiles that can be used.

[0008]

According to claim 1 of the present invention.
In order to solve the above problems, a sports-type bicycle wheel includes a circular rim, a hub located at the center of the rim, and linear spokes that connect the left and right sides of the hub to the rim. In a sports-type bicycle wheel equipped with the spokes, the spokes are 60 degrees between the hub and the rim ,
6mm to 1 at a predetermined angle of 72 degrees or 90 degrees
Are continuously connected two by two in the width spacing of 2mm or 12.3 mm, with the spokes of each the two are arranged in substantially parallel state, spokes are connected by the two is above
Provided on both the left and right sides of the hub, the same total number of
Characterized by being spokes .

The sports type of the invention according to claim 1
According to the bicycle wheel described above, a plurality of the spokes are continuously connected at a width of 6 mm to 12 mm or 12.3 mm with a predetermined angle of 60 °, 72 ° or 90 ° between the hub and the rim. from being a load applied to the bicycle wheel in order to receive the spokes of each two above simultaneously, while arranged at the predetermined angle of the spokes, it becomes possible to improve the strength and rigidity of the bicycle wheel , It will not bend.

Also, whether the two spokes each have a length of 6 mm
The air resistance due to the rotation of this bicycle wheel is large for the first spokes arranged in a substantially parallel state, because they are arranged in a substantially parallel state with a narrow interval of 12 mm or 12.3 mm . Since the spokes after this substantially parallel state are small, the air resistance received by each of the two spokes is also suppressed to the minimum.

[0011]

[0012]

[0013]

[0014]

A sports type according to claim 2 of the present invention
In the bicycle wheel , on the premise of the invention according to claim 1, a plurality of spoke holes that connect the end portions of the spokes are formed on the outer circumference of the hub, and the spoke holes are on the outer circumference circle of the hub. It is characterized in that a number of spokes corresponding to the number of the plurality of spokes is formed on the tangent line.

The sports type of the invention according to claim 2
According to the bicycle wheel of the above, since the spoke holes of the hub are located on the tangent line on the outer circumferential circle of the hub, and the number corresponding to the number of the two spokes is formed, It is possible to accurately connect the ends of the parallel spokes at the positions described above while maintaining the substantially parallel state.

[0017]

[0018]

[0019] Of the sports type according to claim 3 of the present invention
The bicycle wheel is characterized in that, on the premise of the invention according to claim 1, a tape for reducing air resistance is wound around each of the two spokes arranged in a substantially parallel state. . The tape for reducing this air resistance may be provided over the entire length in the longitudinal direction of the spokes arranged in the parallel state, or both ends of the spoke on the rim side and the hub side, or any of these. It may be arranged on one side.

According to the sports type bicycle wheel of the third aspect of the present invention, since the tape is wound around the two spokes which are arranged in a substantially parallel state, depending on the strength of the cross wind. It is possible to adjust the range in which the tape is wound, and to finely adjust the air resistance according to the vehicle type. And air resistance can be reduced.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) As shown in FIGS. 1 and 2, a bicycle wheel according to the present embodiment is obtained by applying the present invention to a time trial race, a road race,
It is a 26-inch wheel applied to sports type bicycle wheels such as triathlon. This bicycle wheel 1
Includes a circular rim 2, a hub 8 located at the center of the rim 2, and linear spokes 5A, 5B connecting a plurality of left and right sides of the hub 8 and the rim 2. The spokes 5A, 5B are the left and right flange portions 9A, 9 of the hub.
Since a pair is connected at a predetermined angle to the left and right of B,
The reference numerals 5A and 5B are the left and right flange portions 9A and 9 of the hub.
Each spoke of B is shown.

[0022] First, the rim 2 is made of aluminum alloy, one having a C-shaped section of the outer peripheral portion 2a and the convex cross section of the inner peripheral portion 2b, the width center of the inner peripheral portion 2 b, Spoke holes 3a for connecting the spokes 5 are formed. The spoke holes 3a are continuously formed in four places at six positions on the circular rim 2 at intervals of about 60 degrees. That is, the spokes 5A and 5B are connected to the nipple 4
The spoke holes 3a are connected to the spoke holes 3a of the rim 2 through four holes, and the spoke holes 3a are formed continuously four by four as shown in FIG. They are formed at equal intervals within a narrowed predetermined interval, while the outer peripheral portion 2a is a long hole that is a group of the spoke holes 3 (see FIG. 1). This is because a pair of left and right spokes 5A and 5B are continuously connected to the rim 2 at substantially the same location from the left and right sides of the hub 8 in a substantially parallel state. Then, by forming the group of spoke holes 3 that are the above-mentioned long holes, the attachment and adjustment of the spokes are facilitated.

Next, the hub 8 is made of an aluminum alloy and has a hollow inner hub body and circular flange portions 9A and 9B provided on both left and right sides of the hub body. The radius of the outermost circumference of the flange portions 9A and 9B is about 30 mm.
The spoke holes 10a, 10b formed in B are formed on the outer circumference circle O of each of the flange portions 9A, 9B and on the tangent line S on the outer circumference circle O. here,
Reference numeral O virtually indicates a circle when a general spoke hole is formed, and reference numeral 5b indicated by a one-dot chain line indicates the spoke hole on the opposite side (right side). As described above, the spoke holes 10a and 10b of the present embodiment have substantially the same size as shown in FIG.
As shown in FIG. 3, two flange portions 9A and 9B are formed on the tangent line S of the outer circumference circle, and two of each are formed.
It is not formed on top. Therefore, 2 described later
The substantially parallel spokes 5a and 5b of the book have substantially the same length, and the flange portion 9 is maintained while maintaining the parallel state.
The spoke holes 10a and 10b of A and 9B are connected.

Further , the left and right flange portions 9A and 9B are
The spoke holes 10a and 10b are formed so as to be displaced from each other at predetermined angles θ1 and θ2 of about 30 degrees. That is, the spoke holes 10a and the spoke holes 1 on the one side described above.
The predetermined angle θ1 with respect to 0a is about 60 degrees, and the predetermined angle θ2 between the spoke holes 10a on the one side and the spoke holes 10b on the other side is about 30 degrees. Moreover, the above 2
One pair of spoke holes 10a, 10b is on one side (left side)
Not only the spoke holes 10a but also the spoke holes 10b on the other side (right side) are formed to have the same interval X. That is, the one-sided spoke holes 10a and the spoke holes 10a have the same spacing X, the other-sided spoke holes 10b and the spoke holes 10b have the same spacing X, and the one-sided spoke holes 10a also have the same spacing X. When approximately 30 degree intervals same space X position shifts the other side of the spoke holes 10b, as a result, as the distance between the left and right sides of the spoke holes 10a and spoke holes 10b become all the same distance X <br/> Has been formed.

In particular, the linear spokes 5a, 5b are connected between the left and right flange portions 9A, 9B of the hub 8 and the inner peripheral portion 2b of the rim 2. These spokes 5a, 5b are made of stainless steel and have a length of about 25 mm. As shown in FIG. 5, flat spokes 5a, 5b with flat center portions aiming at the aero effect are provided on one side. Has a head portion 6 connected to the spoke holes 10a and 10b of the hub 8, and the spoke hole 3 of the rim 2 is formed on the other side.
Is formed with a screw portion 7. Therefore, the heads 6 on one side of the spokes 5a, 5b are inserted and fixed in the spoke holes 10a, 10b of the hub 8, and the other side is formed on the rim 2.
Is inserted into the spoke holes 3 of the above, and the screw portion 7 is tightened and stretched via the nipple 4.
The nipple 4 is fixed via a plate member (not shown) made of an alloy such as aluminum. Since each of the spokes 5a and 5b of the present embodiment is an independent spoke 5a and 5b, the conventional one can be used as it is, and of course, delicate setting is possible.

As shown in FIGS. 1 and 7, the flat spokes 5a and 5b are arranged at six positions with a predetermined angle θ of about 60 degrees between the hub 8 and the rim 2. A plurality of the spokes 5A and 5B are arranged in parallel at a plurality of locations at the six locations, to form the group of spokes 5A and 5B.
That is, the spokes 5A and 5B of the present embodiment differ by about 30 degrees on both sides of the hub 8 and differ by 60 degrees on each side, while on the other hand, on the rim 2 side, the two in the substantially parallel state are substantially the same. It is stretched through the spoke holes 3a so as to be the location. Here, in FIG. 7, the spoke 5A indicated by the solid line indicates one side (left side) of the hub 8, and the spoke 5B indicated by the alternate long and short dash line indicates the other side (right side).

Here, the interval between the two spokes 5a and the spokes 5b in a substantially parallel state is set to about 2 to 4 times the width H of the flat spokes 5a and 5b (see FIG. 15). In the example shown in FIG. 15, the width 3H is set to be three times the width H of the flat spokes 5a and 5b. That is, in the present embodiment, the width H of the spokes 5 is about 3 mm, and the spokes 5 are connected in a substantially parallel state at an interval of 6 to 12 mm which is 2 to 4 times the width. Further, although the spokes 5a and 5b of the present embodiment are arranged in a range in which the two parallels are in a substantially parallel state with a narrower interval, the spokes 5a and 5b have two or more in the substantially parallel state as described later. However, various connection patterns are possible for the assembled state. Specifically, the number may be two, three, or four. In the case of two to four spokes, the spacing between the spokes is also the same as that of the flat spokes 5.
The width H is about 2 to 4 times. However, it is possible to provide five or more, but if five or more are provided, the weight of the bicycle wheel 1 becomes heavy, which is not preferable. Therefore, the number of spokes 5 in the above-mentioned substantially parallel state is from 2 to 4
It shall be a book.

Further, the spokes 5a, 5b of the present embodiment
Although the above flat shape was used, it is also possible to use a round spoke having the same thickness as the whole length, or a stepped spoke having a round center with a thin central portion. These diameters are usually about 1.8 to 2.1 mm, but in these cases, the spacing between the substantially parallel spokes 5a, 5b is about 2 to 5 times these diameters. The other side of the spokes 5A and 5B may be connected to the side surface portion 2c of the rim 2 as seen in the riding type.

Further, the pair of spokes 5A, 5B in a substantially parallel state are connected to the rim 2 at substantially the same position with a predetermined angle θ of about 60 degrees from both left and right sides of the hub 8. That is, as shown in FIG. 3, four spokes 5a, 5b, 5a, 5b (a group of two spokes 5A, two spokes 5A, 5B) has one ends connected continuously.

In the bicycle wheel 1 of this embodiment, the spokes 5A, 5B in the substantially parallel state are thus the hub 8
There are six connecting points on each of the left and right sides, each having a predetermined angle θ of about 60 degrees, and the plurality of the plural points are continuously arranged in a substantially parallel state. Since the number of continuous spokes 5A and 5B in the substantially parallel state is two, the number of spokes of the bicycle wheel 1 according to the present embodiment is 12 on one side and a total of 24 on both sides. Is.

Therefore, in the present embodiment, as shown in FIG. 6, the air resistance due to the rotation of the bicycle wheel 1 is large with respect to the first spokes 5a arranged in a substantially parallel state, but this is almost parallel. Since the spokes 5b and 5c after the state are small, the air resistance received by the plurality of spokes 5A and 5B is also suppressed to the minimum. That is, the spokes 5b, which are on the rear side of the above-mentioned substantially parallel state,
5c is hidden by the spokes 5a in the rotation direction, and is less susceptible to wind resistance (wind resistance is indicated by an arrow). In other words, there is almost no difference in air resistance compared to the conventional bicycle wheels that are connected one by one at a predetermined interval. Therefore, the air resistance can be suppressed to the minimum even though a plurality of them are continuously provided at the predetermined angle θ. Note that FIG. 6 is an example in which the bicycle wheel 1 according to the present embodiment is applied to front wheels.

In the present embodiment, the bicycle wheel 1 is also used.
Since the plurality of spokes simultaneously receive the load applied to the bicycle, the strength and rigidity of the bicycle wheel 1 are improved. In particular, there is no problem that the spokes bend and the air resistance is lost unlike the conventional example. Moreover, the distance between the group of spokes 5A (or 5B) and the group of spokes 5A (or 5B) is 6 on one side.
Since it is widely opened as a predetermined angle θ of 0 degree,
There is also no problem of being prone to swaying from the side wind.
Since each one of the spokes 5A and 5B in each group is an independent spoke 5A and 5B, each spoke 5A and 5B is
It is also possible to delicately set the stretched state of A and 5B.

Next, the spokes 5A and 5B of the present embodiment
Another connection pattern will be described. In the bicycle wheel of this embodiment, as shown in FIGS. 8 to 14, the connection pattern of the spokes 5A and 5B can be variously changed. Here, the spokes 5 shown by solid lines in FIGS.
A indicates one side (left side) of the hub 8, and the spoke 5B indicated by a chain line indicates the other side (right side). Note that FIGS. 8 to 12 are examples applied to the front wheels, and FIGS.
4 is an example applied to the rear wheel.

First, the connection pattern of FIG. 8 has a predetermined angle θ.
Is about 60 degrees, and the spokes 5A and 5B are provided on the left and right sides of the hub 8 in pairs, and on each side (left side) of the plurality of pairs of spokes 5A and 5B, two spokes are provided. (Spokes 5a, 5b) 5A, and the other side (right side) has three spokes (spokes 5a, 5b).
5b, 5c) 5B. In this case, it is also possible to make the left and right sides opposite to this, three and two. In these cases, the number of spokes 5A and 5B of the bicycle wheel 1 is 30 in total. When assembled in this way, one side has an odd number of assembled states, but the total number of right and left sides combined is an even number, and as a whole, harmonious assembly is possible.

Next, in the connection pattern of FIG. 9, four spokes are arranged in a substantially parallel state at a predetermined angle θ of about 90 degrees (spokes 5a, 5b, 5).
c, 5d). Since a group of four spokes 5A and 5B are arranged in this way, in FIG. 9, there is a large interval of a predetermined angle θ of about 90 degrees,
The connection strength and rigidity of the bicycle wheel 1 can be enhanced.

As described above, in the bicycle wheel 1 according to the present embodiment, there are not six connecting points having the predetermined angle θ of about 60 degrees, but five connecting points having the predetermined angle θ of about 72 degrees. It is also possible to set the position to be four, or to connect four positions with a predetermined angle θ of about 90 degrees. In the connection pattern shown in FIG. 10, there are five connection points at a predetermined angle θ of about 72 degrees, and three groups of spokes 5A, 5B are formed on each side (5a, 5b, 3). 5
c). Also in this case, as in FIG.
The pattern may be such that one side of each of the spokes 5A and 5B has three pieces and the other side has two pieces.

On the other hand, although not specifically shown, it is also possible to provide seven or eight locations above the above six locations. As described above, when the number of the bicycle wheels is six or more, the number of the spokes 5A and 5B provided on each of the left and right pairs is two, and the total number of the spokes is reduced to four. It is possible to enhance the improvement of the connection strength between the spokes 5A and 5B.

As shown in FIGS. 11 and 12, the predetermined angle θ on one side of the bicycle wheel 1 is 60 degrees, and the number of spokes 5A, 5B provided in pairs of right and left is about 30 degrees. It may be a shifted version. That is, in FIG. 11, two spokes 5A and 5B on each of the left and right sides are arranged at a predetermined angle θ of about 30 degrees each,
FIG. 12 shows a total of 24 spokes, and FIG. 12 shows a total of 36 spokes 5A and 5B on each of the left and right sides arranged at a predetermined angle θ of about 30 degrees.

Further, as the rear wheel of the bicycle wheel 1,
As shown in FIGS. 13 and 14, one pair of spokes 5A and 5B, which are provided in pairs of two on each side, may be arranged in a cross shape. That is, in FIG. 13, the spokes 5A and 5B on the left and right sides are arranged in a cross shape, and a total of 24 spokes are formed.
In FIG. 14, the spokes 5A on one side (only on the left side) are arranged in a cross shape, but the spokes 5B on the other side are not arranged in a cross shape, and the total number is 24 in total. . Then, using the rim 2 and the hub 8 having the above-described structure, the rim 2 side is connected to the continuously formed spoke holes 3a, while the hub 8 side is connected in a cross shape.

Therefore, in the example of FIG. 13 and FIG. 14, the group of spokes 5A, 5B provided in pairs (5a, 5b), which are arranged in a cross shape, are substantially parallel to each other. As described above, the air resistance will be suppressed to the minimum. Further, since the spokes 5a and 5b of the bicycle wheel 1 are not intersected at the central portion as in the conventional example but only at the hub 8 side, they are large as in the conventional example. Air resistance does not occur. In addition, since the strength and rigidity of the bicycle wheel 1 are required for the rear wheel rather than the air resistance as compared with the front wheel, there is a need for such a connecting pattern arranged in a cross shape.

Next, as an application example of the present embodiment, as shown in FIG. 15, the spoke 5 having a substantially triangular cross section.
By using a, 5b, and 5c, it is possible to continuously arrange a plurality of lines in the substantially parallel state. Each of the spokes 5a, 5b, 5c having a substantially triangular cross section has a streamlined shape. Therefore, according to this application example,
The air resistance due to the rotation of the bicycle wheel 1 is larger than that of the first spoke 5a, but the spokes 5b and 5c after this substantially parallel state are the spokes 5a ahead of the above-mentioned direction of rotation.
Since it is completely hidden in the air, the wind resistance is further reduced, and the air resistance received by the spokes 5A, 5B of the plurality of groups can be suppressed to the minimum.

Further, as an application example of the present embodiment, as shown in FIG. 16, two spokes 5a and 5b arranged in a substantially parallel state are used, and these two 5a and 5b are used.
It is possible to use by winding a tape T for reducing air resistance between the two. The tape T for reducing this air resistance is formed by the spokes 5a, 5 arranged in parallel with each other.
It may be arranged over the entire length of b in the longitudinal direction, or both ends of the spokes 5a and 5b on the rim 2 side and the hub 8 side, or one of these sides. Here, the interval 3H between the two spokes 5a and the spokes 5b in a substantially parallel state is the width H of the flat spokes 5a and 5b.
It is set to 3 times. By winding the tape T in this manner, it is possible to configure it as a tape (generally referred to as "made of carbon") in which carbon or the like is attached to parallel spokes to form a predetermined width. Note that FIG. 16 shows a plurality of spokes 5a and 5b.
Is two, but the above three or four may be used.

Therefore, according to this application example, the plurality of spokes 5a, 5b arranged in a substantially parallel state.
Since the tape T is wound around the two, the gap between the two spokes 5a and the spokes 5b in a substantially parallel state is eliminated, and the range in which the tape is wound can be adjusted according to the strength of the crosswind, and the air can be adjusted. The resistance can be reduced. In other words, the group of spokes 5 described above.
The air resistance received by A and 5B is only one. Further, by arranging the tape T over the entire length of the spokes 5a, 5b in the longitudinal direction or only on the rim 2 side or the hub 8 side, it is possible to make a fine adjustment of the air resistance according to the vehicle type. Become. When the cross wind is strong, the tape T is not used.

(Second Embodiment) As shown in FIG. 17, the bicycle wheel according to the second embodiment has flange portions 9A, 9B with two substantially parallel spokes 5a, 5b maintained in a parallel state. Are connected to the spoke holes 10a and 10b. The two substantially parallel spokes 5a,
5b is slightly different in length (about 5-10 mm). A plurality of spokes 5A and 5B each have two spokes 5A and 5b on the left and right, respectively, and are connected to the rim 2 with a predetermined angle θ of about 72 degrees from both the left and right sides of the hub 8. ing. Here, the length of each spoke is about 540 mm.
And the spacing in the above-mentioned substantially parallel state is 12.3 mm.

However, the bicycle wheel 11 according to the present embodiment.
Is a group of two spokes 5A, 5 at almost the same location.
The spokes 5a and 5b of each B are formed with a predetermined distance θ4. That is, each of the spokes 5a, 5b of the group of spokes 5A, 5B,
5a and 5b are not concentrated and connected at almost the same place, and the left and right groups of spokes 5a of the spokes 5A and the group of spokes 5b of 5B are placed in the center of the inner peripheral portion of the rim 2 with a predetermined interval θ4. It is connected to the spoke holes 3a to be formed.

In the bicycle wheel 11 according to the present embodiment, as described above, the spokes 5A, 5B in the substantially parallel state are connected at five positions on the left and right sides of the hub 8 with a predetermined angle θ of about 72 degrees. Then, the above-mentioned plurality of lines are arranged in a substantially parallel state at these five locations. This is a case where the number of continuous spokes 5A and 5B in the substantially parallel state is two, respectively, but in the case of the substantially parallel state, it is possible to be within the range of two to four. Here, the predetermined interval θ4 between the spokes 5a of the left and right groups of spokes 5A and the group of 5B spokes 5b.
Is set to about 9 degrees in the case of five spokes on one side according to the present embodiment.

Therefore, also in the present embodiment, the air resistance due to the rotation of the bicycle wheel 1 is larger than that of the first spokes 5a arranged in a substantially parallel state, but the spokes 5b after the substantially parallel state. (In addition, the number of spokes 5c is also included in the case of three.) Since it is small, the air resistance received by the plurality of spokes 5A, 5B is also suppressed to the minimum.

Further, in the present embodiment, the connection state with the rim 2 becomes good at a predetermined interval θ4 between the spokes 5a of the left and right groups of the spokes 5A and the group of 5Bs of the spokes 5b. More specifically, the lateral movement of the connection is less likely to occur than in the continuous connection state of the first embodiment, and
The centering (centering) can be adjusted accurately and smoothly, and the strength and rigidity of the bicycle wheel 1 can be further improved. In other words, by providing the predetermined distance θ4, the present embodiment can obtain strength and rigidity close to six points on one side, although the number of points on one side is five. Also, the attachment of the nipple 4 becomes good. Here, the predetermined interval θ
4 is slightly different in the present embodiment, such as five locations, six locations, etc. on one side. That is, the predetermined interval θ4 of the present embodiment is about 9 degrees, and the larger the angle is, the more accurately and smoothly the above-mentioned blur prevention and centering (centering) adjustment can be performed. However, if the predetermined distance θ4 is too large, the spokes 5a and 5b in the substantially parallel state have a large difference in length. Therefore, the predetermined interval θ
4 is an angle smaller than one half of the predetermined angle θ from about 9 degrees (3 if the predetermined angle θ is 72 degrees).
6 degrees, and 30 degrees if the predetermined angle θ is 60 degrees) are preferable. In the connection pattern of FIG. 17, the left and right groups of spokes 5A and 5B intersect each other. This is because the positions of the spoke holes 10a and 10b of the flanges 9A and 9B are at a predetermined angle. Because it is formed by shifting the position. That is, the left and right sides do not intersect in a substantially parallel state.

Next, the spokes 5A and 5B of the present embodiment
Another connection pattern will be described. In the bicycle wheel of this embodiment, as shown in FIGS. 18 to 20, the connection pattern of the spokes 5A and 5B can be variously changed. Here, it is an example applied to the front wheels in FIGS. 18 to 20. First, in the connection pattern of FIG. 18, the predetermined angle θ is about 60 degrees, the spokes 5A and 5B are provided on the left and right sides of the hub 8 in pairs, and the spokes 5A and 5B are formed in pairs. One side (left side) has two spokes (spokes 5a, 5b) 5A, and the other side (right side) has two spokes (spokes 5a, 5b).
It is 5B. The spokes 5 of the bicycle wheel 1 in this case
The number of A and 5B is 24 in total. There are 6 places on one side of this application example, which is suitable for a sports type for short distance.

Next, the connection pattern of FIG. 19 is about 9 on one side.
Two spokes are arranged substantially parallel to each other at a predetermined angle θ of 0 degree (a group of spokes 5a and 5b on one side). In this case, the total number of spokes 5A, 5B of the bicycle wheel 1 is 16. Also, FIG.
In the connection pattern shown in (3), there are three connection points with a predetermined angle θ of about 120 degrees on each side, and two parallel groups of two spokes 5A and 5B are formed at these three points. The spokes 5A, 5 of the bicycle wheel 1 in this case
The number of B is 12 in total. Each of the connection patterns may have different numbers of right and left spokes 5A and 5B. For example, there is a case where the number of the spokes 5A in one group on one side is 2 (5a, 5b) and the number of the spokes 5B in one group on the other side is 3 (5a, 5b, 5c). Three places and four places on one side of these application examples are suitable for sports type for long distance.

Further, as an application example of this embodiment, as shown in FIG. 15 described above, a plurality of spokes 5a, 5b, 5c having a substantially triangular cross section are used, and a plurality of spokes 5a, 5b, 5c are continuously arranged in the substantially parallel state. It is possible to make a main arrangement, and as shown in FIG. 16, two spokes 5 arranged in a substantially parallel state.
It is possible to use a tapes 5a and 5b and wind a tape T between the two tapes 5a and 5b to reduce air resistance.

Although the sports type bicycle has been described in this embodiment, the present invention can be applied to a riding type bicycle wheel. Further, in the present embodiment, the bicycle wheel has been described as having 26 inches, but the present invention can of course be applied to a bicycle wheel having 27 inches and other sizes.

[0053]

According to the bicycle wheel of the present invention, a plurality of the spokes are connected between the hub and the rim within a predetermined interval in which a predetermined angle is narrowed and the interval is narrowed. Since the plurality of spokes are simultaneously subjected to such a load, the connection strength of the spokes is improved even though the spokes are provided at a predetermined angle. Particularly, for bicycles in which the spokes are connected one by one at predetermined intervals. Compared with the wheels, the connection strength is remarkably improved, and the bending can be prevented.

In the bicycle wheel of the present invention, since a plurality of spokes are arranged in a substantially parallel state, the air resistance due to the rotation of the bicycle wheel is the same as that in the first spoke arranged in a substantially parallel state. Although it is large for the spokes after this parallel state, it is small for the spokes after this parallel state. Therefore, the air resistance received by the above-mentioned spokes is also suppressed to a minimum, and in particular, one at a time with the conventional predetermined intervals. Compared with the bicycle wheel to be connected, there is almost no difference in air resistance. Therefore, the time trial race,
It is suitable as a wheel for sports type bicycles such as road races and triathlons.

[0055]

[Brief description of drawings]

FIG. 1 is a perspective view showing a bicycle wheel according to a first embodiment of the present invention.

FIG. 2 is a view showing a state in which spokes are connected between the hub and the rim of the above embodiment.

FIG. 3 is an enlarged perspective view showing the rim of the above embodiment.

FIG. 4 is a front view showing the hub of the above embodiment.

FIG. 5 is a side view showing the spoke of the above embodiment.

FIG. 6 is a cross-sectional view illustrating the air resistance of the spokes of the above embodiment.

FIG. 7 is a side view showing a connection example of the spokes of the above embodiment.

FIG. 8 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 9 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 10 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 11 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 12 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 13 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 14 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 15 is a cross-sectional view showing another example of the spoke of the above embodiment.

FIG. 16 is a cross-sectional view showing a state in which a tape is wound around the spokes of the above embodiment.

FIG. 17 is a perspective view showing a bicycle wheel according to a second embodiment of the present invention.

FIG. 18 is a side view showing a connection example of the spokes of the above-described embodiment.

FIG. 19 is a side view showing another example of connection of the spokes of the above embodiment.

FIG. 20 is a side view showing another example of connection of the spokes of the above embodiment.

[Explanation of symbols]

1,11 bicycle wheels, 2 rims, 3 rims of a group of spoke holes, 3a rims of continuous spoke holes, 5a,
5b, 5c, 5d spokes in a substantially parallel state, 5A one group of spokes on one side, 5B one group of spokes on the other side,
8 Hub, 9A, 9B Hub flanges, 10a, 10
b Spoke hole, θ, θ1, θ2 Predetermined angle, θ4 Predetermined interval between the spokes 5a of the left and right groups of the spokes 5A and the group of 5B of the spokes 5b H The width of the spokes, O The circumference of the flange portion, S On the circumference of the circle Spacing between spoke holes on tangent line, T-tape, X hub

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60B 1/00

Claims (3)

(57) [Claims] 1. A sports-type bicycle comprising a circular rim, a hub located at the center of the rim, and straight spokes connecting the left and right sides of the hub to the rim.
In use the wheels, the spokes between the hub and the rim 6
6 mm at a predetermined angle of 0, 72, or 90 degrees
To 12 mm or 12.3 mm in width , two spokes are continuously connected to each other, and the two spokes are arranged in a substantially parallel state, and the two spokes are connected to each other.
Is provided on both the left and right sides of the hub, and is the same on both the left and right sides.
Sports characterized by the number of spokes
Type bicycle wheel . 2. A plurality of spoke holes for connecting end portions of the spokes are formed on an outer circumference of the hub, the spoke holes being located on a tangent line of the outer circumference circle of the hub,
The sports type vehicle according to claim 1, wherein a number corresponding to the number of two spokes is formed.
Wheels for turning cars . 3. A spoke according to claim 1, characterized in that the wound tape for reducing the air resistance to the spokes are arranged in substantially parallel state of each said plurality present
Twin-type bicycle wheel .