TW201938406A - Rear hub assembly including a hub, a plurality of pulling spokes, and a plurality of static spokes - Google Patents

Abstract

A rear hub assembly includes a hub, a plurality of pulling spokes, and a plurality of static spokes. Under the configuration of the hub mounted with the pulling spokes and the static spokes, a horizontal position of the hub where the pulling spoke is fixed is closer to the central position of the hub than a horizontal position of the hub where the static spoke is fixed. Therefore, when the hub is rotated, the vertical component of the pulling spoke is greater than the horizontal component to increase the tension of the pulling spoke. In addition, the horizontal component of the static spoke is greater than the horizontal component of the pulling spoke, such that the static spoke provides lateral rigidity to the hub, and thereby achieving the effect of the present invention for improving the torsion and lateral rigidity.

Description

Rear hub combination

The present invention relates to a rear hub for bicycles, in particular to use both straight-spoke spokes and bent spokes, so that the hub has improved torsion and lateral rigidity when compared with conventional products when the hub is in operation.

Whether the bicycle is running smoothly or not, the wheel set is a key factor that occupies a considerable amount. The reason why the wheel set can rotate smoothly depends entirely on the cooperation between the hub and the frame. In particular, the rotation of the wheel set is driven by the spokes connected between the wheel rim and the hub. Therefore, by manually stepping on the pedals on the large disk, the large disk drives the chain synchronously, so that the chain pulls the flywheel on the side of the hub, so that the hub continues to rotate, and because the spokes pull the rim, the Coordination is about the torsional rigidity of the wheel set. Excellent torsional rigidity can overcome the changes in the force of the bicycle's wheel set on curves and rough roads.

At present, the common types of woven spokes of flower hubs are generally radial or cross. The so-called radial arrangement of spokes means that the spokes are connected to the rim in a radial pattern with the flower hub as the center, and the spokes are arranged at equal angular intervals. Spoke cross means that the adjacent spokes are cross-connected to the rim and the hub, and the cross-shaped spokes can be arranged in different cross-types due to the position of the rear wheel driving side. A new type of bicycle hub is now known, such as Taiwan New Patent No. M517688, which can provide a straight head Bicycle hub with two types of spoke and elbow spoke. However, in this patent, in addition to arranging a plurality of strip-shaped straight-head joint holes in the hub, the second and third embodiments further provide a plurality of strip-shaped straight-head lateral holes along the hub. This design seriously damages the structural strength of the hub. Furthermore, when assembling straight spokes to the hub, you must first find the position of the straight joint hole from the ring groove in the narrow recessed space on the outside of the hub, so that the straight spokes can be made. The shaft part is provided with a straight joint hole. Therefore, this type is quite troublesome and inconvenient to assemble. In other words, this type of hub structure is quite unfavorable to the installation requirements of mass production for the industry.

The main object of the present invention is to provide a rear hub assembly, which has the effects of improving the torsion and lateral rigidity, and avoids the defects in the conventional structure that the strip-shaped joint holes and the long straight lateral holes are damaged to the strength of the hub. It is a new type of rear flower hub combination.

In order to achieve the foregoing objects and effects, a rear flower hub assembly according to the present invention includes: a flower hub having a middle section and a flower plate disposed at each end of the middle section, the flower plate having one of the middle section facing An inner surface, and an outer surface facing the outer side of the flower hub, and the inner surface is opposite to the outer surface; and the inner surface is provided with a plurality of inner convex blocks and is arranged at an equidistant radiation, and is convex in the plurality The blocks form a space between each other, and each of the plurality of inner convex blocks has a straight drawing hole, and the two hole ends of the straight drawing hole face the space; the faceplate has a plurality of circular bending holes and runs through the inner surface. And the outer surface, and one end of the plurality of bent holes is connected to the inner surface and faces the space; a plurality of pull spokes are respectively worn The straight pull holes of the plurality of inner pull pieces are provided, and the plurality of straight pull spokes are each fixed at the head to the straight pull holes of the plurality of inner pull pieces, and the shafts of the plurality of straight pull spokes pass through the space and outward. Extending; and a plurality of static spokes, each of which is provided with the plurality of bending holes through the space toward the outer surface, and the ends of the plurality of bending spokes are latched and positioned on the inner surface, The shaft of the plurality of bent spokes is located on the outer surface of the faceplate and extends outward.

The detailed characteristics of the aforementioned rear hub combination, wherein the forward rotation direction of the hub with the middle section as the axis is defined as the forward direction, and when the inner convex block rotates toward the forward direction, the head end of the straight-spoke spoke is first turned The shaft is in the forward direction, and the bent spokes are turned from the shaft to the forward direction.

The detailed feature of the aforementioned rear hub combination, wherein the faceplate is provided with a plurality of auxiliary holes penetrating the inner surface and the outer surface, and the plurality of auxiliary holes are used for the plurality of bent spokes to pass through, and the plurality of auxiliary holes are spacer rings It is listed on the faceplate and is located between the plurality of straight pull holes and the plurality of inner bumps.

The detailed features of the aforementioned rear hub combination, wherein the plurality of internal projections are located on the inner surface near the periphery, and an annular space is formed between the plurality of internal projections and the middle section, and the annular space is connected to the space through.

For the detailed features of the aforementioned rear hub assembly, the straight-spoke spokes are made of steel or carbon fiber, and the bent spokes are made of steel.

1‧‧‧ flower hub

11‧‧‧ middle section

12‧‧‧Flower plate

121‧‧‧Inner surface

122‧‧‧ Outer surface

123‧‧‧Inner bump

124‧‧‧ Space

125‧‧‧Straight pull hole

126‧‧‧Bend hole

127‧‧‧annulus

128‧‧‧ auxiliary hole

13‧‧‧Ratchet

2‧‧‧Straight Pull Spokes

3‧‧‧ bent spokes

The first figure is a schematic perspective view of the combination of the present invention.

The second figure is a combined perspective view of the present invention from another perspective.

The third figure is a schematic view of the installation of the straight-spoke spokes of the present invention.

The fourth figure is a schematic view of the installation of the bent spokes according to the present invention.

The fifth diagram is a schematic cross-sectional view of the first VV line segment.

The sixth diagram is a schematic cross-sectional view of the first diagram VI and VI line segments.

The seventh diagram is a schematic perspective view of another embodiment of the present invention.

Please refer to the first to fourth figures of the drawings. The figure discloses a rear hub combination, which includes a hub 1, a plurality of pull spokes 2 and a plurality of static spokes.

The flower hub has a middle section 11 and a flower face 12 provided at each end of the middle section 11, and a ratchet 13 is assembled on the outside of one of the flower face 12. The flower face 12 has an inner surface facing one of the middle section 11. The surface 121 has an outer surface 122 facing the outer side of the flower hub 1, and the inner surface 121 is opposite to the outer surface 122. The aforementioned middle section 11 has a hollow structure and is provided with a shaft center group (not shown in the figure) for installation and installation, and the radial dimension of the faceplate 12 is larger than the radial dimension of the intermediate section 11, and the aforementioned faceplate 12 and the intermediate section 11 are in series. The integrated structure is taken as an example, and fixed types that can be combined with each other can also be adopted. In addition, the face plate 12 is a solid structure, and the face plate 12 can also be adopted as a hollow structure.

In addition, a plurality of inner convex blocks 123 are convexly arranged on the inner surface 121 and arranged at equal distances, and a space 124 is formed between the plurality of inner convex blocks 123, and each of the plurality of inner convex blocks 123 has a straight pulling hole 125. Both ends of the straight drawing hole 125 face the space 124. The faceplate 12 has a plurality of bent holes 126 in a circular array, and passes through the inner surface 121 and the outer surface 122. One end of the plurality of bent holes 126 is connected to the inner surface 121. And toward this space 124.

The plurality of straight-drawing spokes 2 are respectively formed through the straight-drawing holes 125 of the plurality of inner protruding pieces 123, and the plurality of straight-drawing spokes 2 are each fixed at the heads with the straight-drawing holes 125 of the plurality of inner protruding pieces 123. The shafts of the plurality of straight-spoke spokes 2 extend through the space 124 and are connected to a rim (the rim is not disclosed in the figure). The straight-drawn spokes 2 are made of steel or carbon fiber.

The plurality of bent spokes 3 are respectively provided with the plurality of bent holes 126 through the space 124 toward the outer surface 122, and the head ends of the plurality of bent spokes 3 are locked and positioned on the inner surface 121, The shaft of the plurality of bent spokes 3 is located on the outer surface 122 of the faceplate 12 and extends outward to form a rim (the rim is not disclosed in the figure). The bent spokes 3 are made of steel.

The present invention adopts the inner convex block 123 protruding on the inner surface 121 of the face plate 12, and the straight pull hole 125 of the inner convex block 123 is used to provide the pull-and-spoke 2 fixation. This can overcome the conventional technology (Taiwan New Patent No.M517688 No.) The hub has a plurality of strip-shaped straight-head joint holes arranged in a radial arrangement, which has a defect in destroying the strength of the structure. In addition, the inner convex block 123 protruding on the inner surface 121 of the face plate 12 has the effect of providing straight pull spokes 2 for easy wearing and fixing, and will not be shielded or obstructed by the sight of other parts of the hub 1 or during installation, thereby overcoming The conventional technology (Taiwan New Patent No. M517688) must find the position of the straight joint hole in the annular groove in the narrow recessed space on the outside of the hub, and it is inconvenient to put the straight spoke.

Please refer to the fifth figure. In the embodiment of the present invention, the flower hub 1 is provided with straight-drawn spokes 2 and curved spokes 3, and the horizontal position of the fixed flower hubs 1 of the straight-drawn spokes 2 is higher than that of the fixed flower hubs 1 of the bent spokes 3 Position closer to the middle position of the middle section 11 of the hub 1 Therefore, when the hub 1 rotates, the component force in the y direction of the straight-spoke spokes 2 is greater than the component force in the x-direction, so the tension of the straight-spoke spokes 2 is increased, and the component force in the x-direction by bending the spokes 3 is greater than Pulling the spokes 2 in the x direction, the bending spokes 3 in this way provides the transverse rigidity of the hub 1, so as to achieve the effect of improving torsion and transverse rigidity as claimed in the present invention.

In addition, the present invention can change the relative middle section of the straight drawing hole 125 and the bending hole 126 by adjusting the axial dimension of the middle section 11, the thickness of the face plate 12, and the size of the inner projection 123 from the face plate 12. 11 the center position to adjust the force of the rear hub (torsion and lateral rigidity).

In particular, when the disc brake wheel set adopts a straight-pull spoke, when the brake is applied, its static spoke will bend (because the braking force is far greater than the driving force). However, this is generally not a problem with frame brakes, because the frame brake is applied to both sides of the wheel frame, so the frame brake cannot withstand the static spoke force, but the disc brake wheel group will. Therefore, in the case of the hub, the spoke spokes used straight pull spokes 2 and the static spokes used bent spokes 3 to avoid spoke spokes generated when the disc brake wheel set was braked. Fold phenomenon.

Please refer to the sixth figure, which defines the forward rotation direction of the hub 1 with the middle section 11 as the axis (as shown by the arrow in the figure) as the forward direction, and the inner convex block 123 rotates toward the forward direction. At this time, the head end of the straight-spoke spoke 2 is first turned into the forward direction of the shaft, and the bent spoke 3 is turned from the shaft to the forward direction of the shaft.

It is worth mentioning that the plurality of inner bumps 123 are located near the periphery of the inner surface 121, and a ring is formed between the plurality of inner bumps 123 and the middle section 11. The space 127 and the annular space 127 communicate with the space 124.

The present invention has another embodiment, and please refer to FIG. 7 for reference. The faceplate 12 is provided with a plurality of auxiliary holes 128 penetrating the inner surface 121 and the outer surface 122, and the plurality of auxiliary holes 128 are used for plural numbers. The bent spokes 3 are penetrated, and the plurality of auxiliary holes 128 are spaced apart from the ring 12 and are located between the plurality of straight pull holes 125 and the plurality of inner protrusions 123. In this way, the straight-spoke spokes 2 and the bent spokes 3 are arranged on the face plate 12 at equal intervals.

Claims (5)

A rear flower hub assembly includes a flower hub having a middle section and a flower face provided at each end of the middle section, the flower face having an inner surface facing the middle section, and having a flower face facing the outside An outer surface, and the inner surface and the outer surface are in opposite directions; the inner surface is provided with a plurality of inner convex blocks and is arranged at an equidistant radiation, and a space is formed between the plurality of inner convex blocks, The plurality of inner convex blocks each have a straight pulling hole, and the two hole ends of the straight pulling hole both face the space; the faceplate has a plurality of circular bending holes and penetrates the inner surface and the outer surface, and the plurality of bending portions are bent. One end of the hole is connected to the inner surface and faces the space; a plurality of straight-drawn spokes are straight-drawn holes through which the plurality of internal projections are respectively inserted, and the plurality of straight-drawn spokes are respectively fixed to the head with the head end. Straight pull holes of a plurality of inner convex blocks, and the shafts of the plurality of straight pull spokes extend through the gap space; and a plurality of bent spokes, each of which is provided with the plurality of bends through the gap space toward the outer surface. Folded holes, and the head end of the plurality of bent spokes is stuck Positioned in the inner surface and the plurality of spokes bent shaft located on the outer surface of the faceplate and extending outward. The rear hub combination as described in claim 1, wherein the forward rotation direction of the hub with the middle section as the axis is defined as the forward direction, and when the inner convex block rotates toward the forward direction, the head of the straight-spoke spoke is first The end turns the shaft toward the forward direction, and the bent spokes turn from the shaft to the forward direction. The rear hub assembly as described in claim 2, wherein the faceplate is provided with a plurality of auxiliary holes penetrating the inner surface and the outer surface, and the plurality of auxiliary holes are used for the plurality of bent spokes The plurality of auxiliary holes are spaced apart from each other, and the spacer rings are arranged on the faceplate and located between the plurality of straight pull holes and the plurality of inner bumps. The rear flower hub combination according to any one of claim 1 to claim 3, wherein the plurality of inner bumps are located on the inner surface near the periphery, and an annular space is formed between the plurality of inner bumps and the middle section , And the annular space is in communication with the space. The rear hub assembly as described in claim 4, wherein the straight-spoke spokes are made of steel or carbon fiber, and the bent spokes are made of steel.