JPH0541901U - Bicycle wheel - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a bicycle wheel that can smoothly rotate without fear of buckling even when subjected to a considerably large compressive force. [Structure] A tubular mounting portion 5 fitted onto the hub body 1, a plurality of spoke portions 6 protruding from the mounting portion 5, and an annular rim portion 7 connected to the outer end of each spoke portion 6. In a bicycle wheel integrally formed with a wheel body 4 made of synthetic resin, each of the spoke portions 6 has a plate surface that connects the attachment portion 5 and the spoke portion 6 and has a plate surface inclined with respect to the axle direction. It has a body 15, and each of these spoke bodies 15
Are alternately tilted in opposite directions so that the adjacent spoke bodies 15 are tilted in a V-shape and are sequentially arranged in the circumferential direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle wheel in which a wheel body is integrally molded of synthetic resin.

[0002]

[Prior Art]

 BACKGROUND ART A bicycle wheel has a tubular mounting portion that is externally fitted to a hub body, a plurality of spoke portions that radially project from the mounting portion, and an annular rim portion that is connected to the outer ends of the spoke portions. There is one in which a wheel body having a and is integrally formed of synthetic resin. However, conventionally, each spoke portion is provided with a plate-shaped spoke body that connects the attachment portion and the spoke portion, but in the past, each plate-shaped spoke body was simply a plate shape that was parallel to the axle direction.

[0003]

[Problems to be solved by the device]

 When riding a bicycle, a considerable amount of compressive force acts on each spoke part of the synthetic resin wheel body, but since the spoke body of the spoke part is simply a plate shape parallel to the axle direction, each spoke part is compressed by the compressive force. However, due to elastic deformation, the wheels tend to bend in the same direction one after another, and buckling is likely to occur, and there was a great danger that the wheels could not rotate smoothly.

In view of the above problems, it is an object of the present invention to provide a bicycle wheel that is not likely to buckle even when subjected to a considerably large compressive force and can be smoothly rotated.

[0005]

[Means for Solving the Problems]

 The technical means of the present invention for solving this technical problem is to provide a tubular mounting portion 5 which is externally fitted to the hub body 1, a plurality of spoke portions 6 protruding from the mounting portion 5, and each spoke. In a bicycle wheel in which a wheel body 4 integrally having an annular rim portion 7 connected to the outer end of the portion 6 is integrally molded of synthetic resin, each spoke portion 6 includes a mounting portion 5 and a spoke portion 6. The spoke main bodies 15 that are connected to each other and have a plate surface that is inclined with respect to the axle direction are provided, and each of the spoke main bodies 15 is arranged so that adjacent spoke main bodies 15 are inclined in a V shape and are sequentially arranged in the circumferential direction. The points are alternately inclined in opposite directions.

[0006]

[Action]

 When riding a bicycle, a large amount of compressive force is applied to each of the spokes 6 of the wheel body 4 in sequence as the wheel rotates. However, even if each spoke portion 6 receives a considerably large compressive force between the mounting portion 5 and the rim portion 7, the adjacent spoke main bodies 15 receive the compressive force while being inclined in a V-shape, Since the two spokes are urged against each other, the spokes 6 are not elastically deformed and sequentially deformed in the same direction by a compressive force.

Further, since the reflectors 18 are attached to both sides of each spoke body 15 so that the spoke body 15 is inclined with respect to the axial direction, the reflectors 18 can be placed in any direction from front, rear, left and right. Is also easily visible.

[0008]

【Example】

 1 to 4, reference numeral 1 denotes a hub body of a bicycle wheel, which includes a hub barrel 2 and a pair of left and right bearings with respect to the hub barrel 2. A hub shaft (3) rotatably held around the hub shaft (3). Reference numeral 4 denotes a wheel body, which is a tubular mounting portion 5 which is externally fitted to the hub body 1, a plurality of spoke portions 6 radially protruding from the mounting portion 5, and outer ends of the respective spoke portions 6. It integrally has a rim portion 7 to be connected, and the wheel body 4 is integrally molded of synthetic resin with the hub body 1 inserted.

The mounting portion 5 includes an inner tubular body 11, an outer tubular body 12, and a plurality of connecting bodies 13 radially arranged between the tubular bodies 11, 12, and the inner tubular body 11 is attached to the hub barrel 2. It is fixed by external fitting. The outer cylinder 12 surrounds the inner cylinder 11 concentrically, and the spokes 6 are radially projected from the outer cylinder 12. A plurality of connecting bodies 13 are arranged at equal intervals in the circumferential direction, and respectively connect the inner tubular body 11 and the outer tubular body 12 in the radial direction.

The spokes 6 are provided in an even number (10 in the illustrated example), and the spokes 6 are arranged in the wheel radial direction from the rim 7 to the mounting 5 and are arranged over the entire circumference of the wheel. They are arranged at equal intervals in the circumferential direction. Further, as shown in FIGS. 5 and 6, each spoke portion 6 has a spoke body 15 that connects the attachment portion 5 and the spoke portion 6 and has a plate surface inclined with respect to the axle direction. It has a pair of ribs 16 bent from both ends in the width direction in a direction perpendicular to the axle direction, and the pair of ribs 16 are bent in mutually opposite directions. The spoke main bodies 15 of the respective spoke portions 6 are alternately inclined in opposite directions, and the adjacent spoke main bodies 15 are inclined in a V shape and are sequentially arranged in the circumferential direction. In addition, each spoke body 15 is slightly rotated clockwise or counterclockwise from the mounting portion 5 to the spoke portion 6 so that the inclination with respect to the axle direction is slightly larger on the spoke portion 6 side than on the mounting portion 5 side. It is twisted.

Both sides of each of the spoke bodies 15 serve as reflector mounting surfaces, and reflectors 18 formed of a reflective tape, a reflective sheet, or a reflective plate are attached to the surfaces.

[0012]

[Effect of the device]

 According to the present invention, each spoke portion 6 is provided with a spoke body 15 that connects the attachment portion 5 and the spoke portion 6 and has a plate surface inclined with respect to the axle direction, and the spoke bodies 15 are adjacent to each other. Since the spoke main bodies 15 are alternately inclined so that they are inclined in a V shape and are aligned in the circumferential direction, the respective spoke parts 6 are arranged between the mounting part 5 and the rim part 7. Even if a considerably large compressive force is applied, the adjacent spoke main bodies 15 are inclined in a V-shape and are thrust against each other, so that the spokes 6 are elastically deformed by the compressive force. Therefore, it is possible to effectively prevent the spokes 6 from buckling because they do not bend in the same direction one after the other, and the wheels can be made smooth even when subjected to a relatively large compressive force. It becomes possible to rotate.

Further, since the even number of the spoke portions 6 are provided at substantially equal intervals in the circumferential direction, the spoke bodies 15 of the adjacent spoke portions 6 are alternately inclined in the opposite direction over the entire circumference. Therefore, the spokes 6 can be more reliably prevented from buckling. In addition, since each spoke portion 6 is provided with a pair of ribs 16 bent in the direction perpendicular to the axial direction from both widthwise ends of the spoke body 15, the ribs 16 increase the rigidity of the spoke portion 6, which also increases the spoke portion. Buckling of 6 can be prevented.

In addition, since the spoke bodies 15 are inclined with respect to the axle direction by providing the reflectors 18 on both sides of each spoke body 15, when the wheel body 4 is viewed from any direction of front, rear, left and right. Also, the reflector 18 can be seen, and the function of the reflector 18 can be fully exerted to improve the safety of bicycle riding.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view.

FIG. 3 is a side view.

FIG. 4 is an enlarged side view.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 hub body 4 wheel body 5 mounting portion 7 rim portion 15 spoke body 16 rib 18 reflector

Claims (4)

[Scope of utility model registration request] 1. A tubular mounting portion (5) which is fitted onto a hub body (1).
And a plurality of spokes (6) protruding from the attachment (5)
And an annular rim that connects to the outer ends of each spoke (6)
In a bicycle wheel in which a wheel body (4) integrally with (7) is integrally molded of synthetic resin, each spoke portion (6) includes a mounting portion (5) and a spoke portion (6).
And a spoke body (15) having a plate surface inclined with respect to the axle direction, each spoke body (15),
A bicycle wheel characterized in that adjacent spoke bodies (15) are alternately tilted in opposite directions so that they are tilted in a V shape and are sequentially arranged in the circumferential direction. 2. The bicycle wheel according to claim 1, wherein the spoke portions (6) are provided in an even number in the circumferential direction at substantially equal intervals. 3. The spoke body, wherein each of the spoke portions (6) is a spoke body.
The bicycle wheel according to claim 1, further comprising a pair of ribs (16) bent from both widthwise ends of the (15) in a direction perpendicular to the axle direction. 4. The bicycle wheel according to claim 1, wherein reflectors (18) are attached to both sides of each spoke body (15).