JPH0549401U - Bicycle disc wheels - Google Patents

Abstract

(57) [Abstract] [Purpose] In a bicycle disc wheel of the type in which a disc is interposed between a rim and a hub, it is possible to maintain the rigidity and flatness of the wheel by adjusting the tension of the disc. And, like conventional disc wheels, allows for reduced air resistance. [Structure] A bicycle disc wheel in which a pair of discs 3 made of a conical fabric 6 woven by arranging reinforcing fibers in a radial direction and a circumferential direction between a hub 4 and a rim 1 are stretched in a conical shape. The connecting metal fittings 2 arranged at a predetermined distance from the outer peripheral edge 33 of the woven fabric 6 are sewn or connected by the outer peripheral end fibers S3 of the reinforcing fibers S1 arranged in the radial direction, and the connecting metal fittings 2 are The screw portion 21 is screwed into the mounting hole 52 of the mounting bracket 5 arranged in the through hole 11 of the rim 1, while the hub 4
The inner peripheral end fiber S4 of the radial reinforcing fiber S1 is inserted through the through hole 42 formed in the flange portion 41 of the sewn or connected to the rim 1 and the hub 4 by the above-mentioned means. A disk wheel for a bicycle, in which disks 3, 3 formed by impregnating and coating a synthetic resin on the entire area of the conical woven fabric 6 that are fixed are stretched opposite to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle disc wheel having a disc-shaped disc interposed between a rim and a hub.

[0002]

[Prior art and its problems]

 The conventional bicycle disc wheel has a structure in which a disc-shaped disc is interposed between the hub and the rim instead of multiple spokes in order to reduce the air resistance during bicycle riding and improve the strength of the wheel. The wheel said to be proposed.

As this type of wheel, the one described in Japanese Utility Model Laid-Open No. 61-169701 is known. In this invention, a disc having a honeycomb structure is formed into a disc shape, and the disc is interposed between the rim and the hub to be integrated.

This known disc wheel has improved flatness and rigidity, however, like the conventional spoke type wheel, the flatness or rigidity of the wheel is maintained by adjusting the tension of each spoke. Things are physically impossible.

That is, once the disk wheel loses the flatness and the rigidity decreases, it was impossible to restore the initial flatness and rigidity.

[0006]

[Technical issues]

 The present invention has been made in view of the above point, and in a bicycle disc wheel of a type in which a disc is interposed between a rim and a hub, by adjusting the tension of the disc, the rigidity and rigidity of the wheel can be improved. The technical task is to enable the maintenance of flatness and to reduce the air resistance like the conventional disc wheels.

[0007]

[Technical Means] The technical means of the present invention taken to solve the above problems are as follows.

In a bicycle disc wheel in which a pair of discs 3 each composed of a conical fabric 6 woven by arranging reinforcing fibers in a radial direction S1 and a circumferential direction S2 between a hub 4 and a rim 1 are stretched opposite to each other, It is configured as follows.

Mounting members 5 are arranged on the rim 1 at predetermined intervals on the outer peripheral edge 33 (FIG. 1) of the conical fabric 6. The outer peripheral end fibers S3 of the radial reinforcing fibers S1 arranged in the radial direction of the conical woven fabric 6 are sewn or attached to the connecting metal fitting 2 attached to the attachment metal fitting 5, as shown in FIG. On the other hand, the inner peripheral end fiber S4 of the radial reinforcing fiber S1 was inserted into the through hole 42 formed in the flange portion 41 of the hub 4 arranged in the central portion of the disk 3 as shown in FIG. Is connected. Then, the entire area of the conical fabric 6 is impregnated and covered with the synthetic resin. The conical fabric 6 is stretched opposite to each other as a disc 3 on both sides of the wheel.

Alternatively, the outer peripheral edges of a pair of opposingly extending disks 3 may be brought into contact with each other, and the entire area of the contact portion 7 may be sewn and fixed so that the center portion of the disks 3 has a convex lens shape protruding outward.

[0011]

[Action]

 The above technical means of the present invention operates as follows.

In the disc wheel and the rim 1 of the disc wheel of the present invention, the outer peripheral end fibers S3 of the reinforcing fibers S1 arranged in the disc 3 in the radial direction are mounted in the coupling holes 22 of the coupling fitting 2, and the coupling fitting 2 The screw portion 21 is screwed into the mounting hole of the mounting bracket 5 inserted into the through hole 11 of the rim 1, and is coupled to the disc 3 and the flange portion 4 of the hub 4.

Therefore, the tension of the radial reinforcing fibers S1 is adjusted by changing the screwing amounts of the connecting fitting 2 and the attachment stopper 5, whereby the overall tension of the disk 3 can be adjusted at the same time.

Therefore, it is possible to adjust the vertical shake and the horizontal shake of the wheel by the same operation as that of the conventional spoke type wheel.

Further, since the disk 3 interposed between the hub 4 and the rim 1 is woven by the radial reinforcing fibers S1 in the radial direction and the ring-shaped reinforcing fibers S2 in the circumferential direction, the degree of freedom is high. The strength and rigidity can be secured even when the tension is limited and no tension is applied.

Further, the entire outer peripheral edge abutting portion 7 of the disk 3 is sewn and fixed to be integrated, and the center portion of the disk 3 is formed into a convex lens shape protruding outward, and a disc is provided between the rim 1 and the hub 4. By interposing 3, the workability is improved and the air resistance can be reduced.

The protrusion length of the center portion of the disk 3 is half the axial length of the hub and protrudes in the left and right outer directions.

[0018]

[Effect of the device]

 The present invention, having the above-mentioned configuration, has the following unique effect.

Since the tension of the disk 3 can be adjusted, the vertical and horizontal shakes can be adjusted like the conventional spoke type wheels, so that the initial state of the wheel, that is, the best state as a wheel, can be maintained at all times. In addition, the life of the wheel is extended.

Further, since the disc 3 is interposed between the rim 1 and the hub 4, the air resistance can be reduced.

Further, workability is also improved by integrally fixing the outer peripheral edge of the disk 3 by sewing, and since the disk 3 has a convex lens shape with a protruding central portion, air resistance is further improved by one layer. Moreover, the tension of the disc is further improved, and the strength of the wheel is also improved.

[0022]

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

Reference numeral 1 denotes a conventional shaped rim on which a tubular tire, a wired-on tire, a hooked edge tire, etc. can be placed, and a drop portion 12 of the rim 1 is provided with through holes 11 at predetermined intervals. It is set up.

Reference numeral 2 is a connecting fitting arranged in the circumferential direction of the disk 3 to be described later at an equal pitch in an amount equal to one half of the number of the through holes 11 of the rim 1.

Reference numeral 3 denotes a disk obtained by impregnating and coating a synthetic resin on a conical woven fabric woven by a plain weave in which radial reinforcing fibers S1 in the radial direction and ring-shaped reinforcing fibers S2 in the circumferential direction are arranged. The outer peripheral end fibers S3 of the radial reinforcing fibers S1 in the radial direction of No. 3 are inserted into the connecting holes 22 of the above-mentioned connecting fitting 2, and the connecting fitting 2 is fixed to the disk 3 by being folded back and sewn on the back surface of the disk 3. There is. In FIG. 1, S2 is a ring-shaped reinforcing fiber. The reinforcing fiber is carbon fiber, aramid fiber, glass fiber or the like, and the synthetic resin is room temperature curable resin such as epoxy or polyester.

Reference numeral 4 denotes a hub arranged in the central portion of the disk 3, and a flange portion 41 on the outer periphery thereof has a through hole 42 formed therein, and the through hole 42 has the radial reinforcing fiber. The inner peripheral end of S1 is inserted, and the remaining part is folded back and sewn to the back surface of the disk 3.

Reference numeral 5 denotes a mounting member into which the connecting fitting 2 is screwed, which has a mounting hole 52 in which an internal thread is formed on the inner periphery protruding from the head 51 having a plus hole. The metal fitting 5 may be a nipple used in the present spoke type wheel, and the screw part 21 is temporarily screwed into the mounting hole 52 with a screwdriver adapted to a plus hole, and the outer peripheral surface of the mounting hole 52 is hexagonal. By using a nipple driver adapted to this shape, the amount of screwing into the mounting hole 52 of the screw portion 21 is adjusted.

The bicycle disc wheel of this embodiment is assembled as follows by the components described above.

The inner peripheral end of the radial reinforcing fiber S1 is fixed to the hub 4 and the outer peripheral end thereof is fixed to the connecting fitting 2, respectively, and the disc 3 is installed on the inner periphery of the rim 1. At this time, the screw portion 21 of the connecting fitting 2 is screwed into the mounting hole 52 and screwed. After mounting the front and back discs 3, 3 on the rim 1 in this way, the amount of screwing into the mounting hole 52 of the threaded portion 2 of the connecting fitting 2 is increased or decreased by turning the nipple to increase or decrease the tension of the radial reinforcing fiber S1. Adjust. In this way, the tension of the disc 3 is adjusted and the bicycle disc wheel is completed.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, the conical fabrics 6 of the above-mentioned embodiment are opposed to each other and the outer peripheral edges thereof are brought into contact with each other, and the entire peripheral region of the contact portion is sewn to the rim 1 so that the connecting fitting 2 is connected to the rim 1. The disk 3 is configured to be connected by the mounting bracket 5, and the constituent members thereof are the same as those of the above-described embodiment.

The structure is such that the inner peripheral end S4 of the reinforcing fiber S1 in the radial direction is inserted into the through hole 42 of the flange portion 41 provided on the outer peripheral edge of the hub 4, and the remaining portion is folded back to the back surface of the disk 3. Sew on. On the other hand, the outer peripheral end of the disk 3 is sewn to the contact portion 7 as described above, and the connecting metal fitting 2 has already described the outer peripheral end S3 of the radial reinforcing fibers S1 extending in the radial direction from the sewn portion. It is inserted into the connecting hole 22 of and the folded portion is sewn to the disc. In this case, the connecting fittings 2 are fixed in the same number as the through holes 11 of the rim 1.

The connecting fitting 2 is screwed to the mounting fitting 5. According to this embodiment, since the disc 3 is integrated, there is an advantage that the work of attaching to the rim 1 and the tension adjustment of the disc are facilitated.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a disk wheel of the present invention,

FIG. 2 is a sectional view taken along line 1f2-f2 of FIG.

FIG. 3 is a view taken in the direction of arrows 3f-3f in FIG.

FIG. 4 is a partially cutaway perspective view of a conical fabric,

FIG. 5 is a front view of the connecting fitting 2,

FIG. 6 is a sectional view of the mounting bracket 5,

FIG. 7 is a sectional view of the second embodiment,

[Explanation of symbols]

1: rim, 11: through hole, 12: drop part, 2: connecting fitting, 21: screw part, 22: connecting hole, 3: disc, 3
3: outer peripheral edge, 4: hub, 41: flange part, 42: through hole, 5: mounting bracket, 51: head part, 52: mounting hole, 6:
Conical fabric, 7: contact part, S1: radial reinforcing fiber, S
2: ring-shaped reinforcing fiber, S3: outer peripheral fiber (Fig. 2), S
4: Inner peripheral end fiber (Fig. 2).

Claims (2)

[Scope of utility model registration request] 1. A bicycle disc wheel in which a pair of discs 3 made of a conical fabric 6 woven by arranging reinforcing fibers in a radial direction and a circumferential direction between a hub 4 and a rim 1 are stretched opposite to each other. The connecting metal fittings 2 arranged at a predetermined distance from the outer peripheral edge 33 of the conical woven fabric 6 are sewn or tightly attached to the outer peripheral end fibers S3 of the reinforcing fibers S1 arranged in the radial direction, and the connecting metal fittings are arranged. 2 screw part 21 through hole 11 of rim 1
Or the inner peripheral end fiber S4 of the radial reinforcing fiber S1 is inserted into the through hole 42 formed in the flange portion 41 of the hub 4 for sewing or sewing. Discs 3 and 3 impregnated and covered with a synthetic resin are stretched opposite to each other over the entire area of the conical woven fabric 6 which is connected and is fixed between the rim 1 and the hub 4 by the above-mentioned means. Disc wheels for bicycles. 2. A pair of discs 3 stretched in opposition to each other are brought into contact with the outer peripheral edges of the discs 3 and the entire contact portion 7 is sewn and fixed, and the center of the disc 3 is formed into a convex lens shape projecting outward. The bicycle disc wheel according to claim 1, wherein the bicycle disc wheel is a bicycle disc wheel.