KR20180085507A - Wheel with rim and method for making the same - Google Patents

Abstract

Disclosed is a wheel having a rim, increasing durability by allowing the fixing direction of a nipple to be flexible while reinforcing structural strength by allowing a coupling portion of a rim main body and the nipple to be thick. Moreover, the wheel having a rim comprises: a rim having an annular shape and a rim main body having a hollow unit therein; a nipple coupled to the rim main body; and a spoke fastened to the nipple. Furthermore, a strength reinforcing unit is disposed on an inner surface of the rim main body having the hollow unit therein, and the nipple is disposed comes in contact with the strength reinforcing unit.

Description

WHEEL WITH RIM AND METHOD FOR MAKING THE SAME [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel having a rim, and more particularly, to a wheel having a rim of carbon material which is applied to a bike wheel or the like and which is constructed by connecting spokes between bosses and rims.

Generally, a rim of a bicycle wheel is a structure for forming a frame of a wheel, and functions to hold a tire in a round shape and to fix a tire and a tube constituting the inside of the tire.

In recent years, carbon rims have been used as bicycle wheels to improve quality and performance. Carbon rims are made of carbon material and have the advantages of high rigidity, light weight and durability.

Korean Patent Registration No. 10-0869305 (November 12, 2008), which was filed by the present applicant, discloses a method of manufacturing a carbon rim and a mold apparatus therefor. FIG. 1 is a perspective view showing a conventional carbon rim, and FIG. 2 is a cross-sectional view showing a part of a wheel having a conventional carbon rim.

1 and 2, the carbon rim 10 includes a rim body 1 having an annular ring shape and having a hollow portion 2 formed therein. The rim body 1 includes a rim body 1 in a radial direction And a clutcher portion 3 for fixing the tire to the outside is formed.

On the other hand, the rim applied to the bicycle wheel is applied to the front wheel and the rear wheel of the bicycle, and the nipple 4 is coupled to the rim 10. A spoke (5) is connected between the nipple (4) and the boss (6) provided on the rotation axis side of the wheel.

The nipple 4 is positioned on the hollow portion 2 formed by the rim body 1 and joined to the bottom surface of the rim body 1, that is, on the radially inner side surface of the hollow portion 2, 1, and the spokes 5 are fastened to the ends thereof. The nipples 4 are provided at a predetermined distance along the circumferential direction of the rim body 1.

The wheel having the conventional rim center-aligns the spokes 5 toward the center of the wheel boss 6. The direction of the nipple 4 fixed to the rim body 1 and the direction of the spokes 5, The nipple 4 or the spokes 5 are damaged. This phenomenon occurs due to the fact that the fixing direction of the nipple 4 coupled to the rim body 1 is fixed in one direction and can not be fluid, and is deviated from the direction of the spoke 5. On the other hand, the joint portion between the rim body 1 and the nipple 4 is required to have a high structural strength as a portion receiving a certain force or more.

In addition, the wheel having the conventional rim has a problem of increase in the number of assembling processes due to assembly of components such as rims, nipples, spokes and bosses, increase in manufacturing cost, durability limitations, and maintenance difficulties . In addition, a wheel having a conventional rim has a problem that the braking force is deteriorated due to the characteristics of the surface of the clutcher portion for fixing the tire, and a method for increasing frictional force with the tire at low cost has been studied.

Patent Document: Korean Patent Publication No. 10-0869305 (November 12, 2008)

In order to solve such a conventional problem, in the present invention, a wheel having a rim capable of increasing the structural strength by increasing the joint portion between the rim body and the nipple and increasing the durability of the nipple in the fixing direction is provided do.

In addition, the present invention provides a wheel having a rim that reduces the number of assembling steps, reduces manufacturing cost, increases durability, and is easy to maintain. In addition, the present invention provides a wheel having a rim having improved braking force by improving the surface structure of the clutcher portion, and a method of manufacturing the same.

A wheel having a rim according to the present invention comprises a rim having an annular shape and a rim body having a hollow portion formed therein, a nipple coupled to the rim body, and a spoke fastened to the nipple, And the nipple is provided in contact with the strength reinforcing portion.

In the above, the strength reinforcing portion has a streamlined shape along the bottom surface of the hollow portion of the rim body and has a downward convex cross-sectional shape.

In the above, the strength reinforcing portions are spaced apart from each other along the circumferential direction of the rim body.

The nipple is composed of a nipple head and a nipple body extending in one side with a cross sectional area smaller than that of the nipple head. The nipple body passes through the strength reinforcing portion and the rim body successively and is fastened to the spokes outside the rim body, One surface of the nipple head with the body formed thereon can contact the strength reinforcing portion.

Wherein the nipple is composed of a nipple head and a nipple body extending in one side with a smaller cross sectional area than the nipple head, the opposite side of the nipple head where the nipple body is formed is in contact with the strength reinforcing portion, So that it can be fastened to the nipple.

The wheel having the rim according to the present invention increases the thickness of the rim to reinforce the strength and at the same time the contact surface of the nipple is fluidly adhered along the curvature of the reinforcement portion to vary the fixing direction of the nipple, have.

Further, the nipple is more easily fastened to the inner surface of the rim body in accordance with the direction of the spoke, so that the durability can be further improved, the weight of the whole wheel can be reduced, Can be saved.

In addition, the wheel having the rim and the method of manufacturing the same according to the present invention can reduce the number of assembling processes, thereby lowering manufacturing cost, increasing durability and maintenance, and improving the surface structure of the clutcher portion to improve the braking force .

1 is a perspective view showing a conventional carbon rim,
2 is a cross-sectional view showing a part of a wheel having a conventional carbon rim,
3 is a perspective view of a rim according to an embodiment of the present invention,
4 is a cross-sectional view of a portion of a wheel with a rim in accordance with one embodiment of the present invention,
5 is a view for explaining a fluidic fixing structure of a nipple according to an embodiment of the present invention,
6 is a front cross-sectional view showing a part of a wheel having a rim according to an embodiment of the present invention,
Figure 7 is a cross-sectional view of a portion of a wheel with rims according to another embodiment of the present invention,
Figure 8 illustrates a rim in accordance with another embodiment of the present invention,
9 illustrates a wheel with a rim according to another embodiment of the present invention,
10 is a cross-sectional view illustrating a mold for explaining a method of manufacturing a wheel having a rim according to the embodiment of FIG.

Hereinafter, the technical structure of the wheel having the rim and the manufacturing method thereof according to the accompanying drawings will be described in detail.

FIG. 3 is a perspective view of a rim according to an embodiment of the present invention, FIG. 4 is a cross-sectional view illustrating a portion of a wheel having a rim according to an embodiment of the present invention, and FIG. 6 is a front sectional view showing a part of a wheel having a rim according to an embodiment of the present invention.

3 to 6, a wheel having a rim according to an embodiment of the present invention includes a rim 100, a nipple 140, and a spoke 150. In this embodiment, a wheel having a rim is described as an example of a bicycle wheel, but it is also applicable as a wheel for other purposes.

The rim (100) has a rim body (110). The rim body 110 has an annular ring shape and a hollow portion 120 is formed therein. The rim body 110 may be made of a carbon material. At a radially outer side of the rim body 110, a clutcher part 130 for fixing the tire is formed.

The nipple 140 is coupled to the rim body 110 and is located in the hollow portion 120 formed by the rim body 110. The nipple 140 passes through the rim body 110 while being in contact with the bottom surface of the rim body 110, that is, the radially inward side surface of the hollow portion 120, and a spoke 150 described later is fastened to the end of the rim body 110 .

The spokes 150 are fastened to the nipple 140 and connect between the nipple 140 and bosses provided on the rotating shaft side of the wheel. A thread 153 is formed on the outer peripheral surface of the spoke 150 and a thread groove 143 corresponding to the thread 153 of the spokes 150 is formed on the nipple 140.

The nipple 140 is composed of a nipple head 141 and a nipple body 142. The nipple body 142 has a smaller cross-sectional area than the nipple head 141 and extends to one side of the nipple head 141. In the nipple 140, a thread groove 143 for fastening with the spokes 150 is formed along the longitudinal direction.

In particular, the wheel with the rim according to an embodiment of the present invention includes the strength reinforcing portion 200. The strength reinforcing portion 200 is provided on the inner surface of the rim body 110 in which the hollow portion 120 is formed. In this case, the nipple 140 is provided in contact with the strength reinforcing part 200.

More specifically, the strength reinforcing parts 200 are spaced apart from each other along the circumferential direction of the rim body 110. The strength reinforcing portion 200 is formed only at a position corresponding to a portion where the nipple 140 is located. Since the strength reinforcing part 200 is not formed entirely along the circumferential direction of the rim body 110 but is spaced apart from the nipple 140 by a predetermined distance, the weight of the whole wheel can be reduced, It can be effectively reduced.

The strength reinforcing part 200 is formed in a streamlined shape along the bottom surface of the hollow part 120 of the rim body 110 and has a downwardly convex cross sectional shape. The lower part of the rim body 110 is formed in a streamlined shape having a constant curvature and the strength reinforcing part 200 is formed in a shape corresponding to the curvature of the rim body 110. In the inside of the rim body 110 in which the hollow part 120 is formed, As shown in Fig.

With this configuration, the thickness of the rim is increased to reinforce the strength, and at the same time, the contact surface of the nipple 140 is fluidly adhered along the curvature of the strength reinforcing part 200, so that the fixing direction of the nipple can be varied. As a result, the direction of the nipple 140 is appropriately directed along the direction of the spokes 150, as shown by a solid line or a dotted line in Fig. 5, thereby improving durability.

The nipple body 142 passes through the strength reinforcing part 200 and the rim body 110 in order and is fastened to the spokes 150 from the outside of the rim body 110. In this case, one surface of the nipple head 141 on which the nipple body 142 is formed is brought into contact with the strength reinforcing portion 200. On the other hand, a separate washer may be interposed between the strength reinforcing portion 200 and the nipple 140.

7 is a cross-sectional view illustrating a portion of a wheel having a rim according to another embodiment of the present invention. Referring to FIG. 7, the mounting direction of the nipple 140 may be reversed. That is, the opposite surface of the nipple head 141 on which the nipple body 142 is formed is in contact with the strength reinforcing portion 200, and the spokes 150 pass through the rim body 110 and the strength reinforcing portion 200, 140, respectively. With this configuration, the coupling between the nipple and the spoke is made easier, and the nipple is brought into close contact with the inner surface of the rim body in a more fluid manner in accordance with the direction of the spoke, thereby further improving the durability.

FIG. 8 illustrates a rim according to another embodiment of the present invention. FIG. 9 illustrates a wheel having a rim according to another embodiment of the present invention. FIG. 10 is a cross- Sectional view showing a mold for explaining a method of manufacturing a wheel having a rim to be followed.

Referring to FIG. 8, a wheel having a rim according to another embodiment of the present invention includes a rim 100 having an annular rim body 110 having a hollow portion 120 formed therein, a rim body 110, And a spoke 150 which is fastened to the nipple 140. The nipple 140 includes a spoke 150, The rim body 110 has a cradle portion 130 for fixing the tire and an embossed portion 500 having a concavo-convex shape on the surface of the cradle portion 130.

The embossed portion 500 is formed on the side surface of the rim body 110 contacting the tire, and is formed slightly wider than the break shoe. The embossing unit 500 may be formed by a method such as performing an etching process on a mold for molding the rim body. The embossed portion 500 may have a rectangular or annular concavo-convex shape.

9, the wheel having the rim according to another embodiment of the present invention includes a rim 100 having an annular rim body 110 having a hollow portion 120 formed therein, A nipple 140 coupled to the nipple 110 and a spoke 150 coupled to the nipple 140 and connecting the rim 100 to the boss 400. The rim 100, the spokes 150, and the bosses 400 are integrally formed and configured in a monocoque type. By integrally forming the rim 100, the spokes 150, and the boss 400 in this manner, the number of assembling processes is reduced, resulting in a reduction in manufacturing cost, an improvement in durability, and an advantageous effect in terms of maintenance and management.

10, a method of manufacturing a wheel having a rim includes the steps of: lapping a carbon fabric with a predetermined thickness on a rim part of a lower mold 610; and performing a lapping process on a spoke part and a boss part of a lower mold 610 Setting a first spoke and a boss (400) respectively on the first spoke and the boss (400), setting the intermediate mold (630) on top of the first spoke and the boss (400) And pressing the upper mold 620 on the lower mold 610 and the upper mold 630 and pressing the air on the rim part to cure the lower mold 610 and the intermediate mold 630. [ And cooling, and separating the manufactured wheel from the mold.

Further, the lower mold 610 and the upper mold 620 are subjected to an etching process for forming embossed portions having concave-convex shapes at portions corresponding to the cruncher portions of the rims in the rim part.

Although the wheel having the rim and the method of manufacturing the same according to the present invention have been described with reference to the embodiments shown in the drawings, the present invention is merely illustrative and various modifications and equivalent embodiments can be made by those skilled in the art I will understand the point. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: rim
110: rim body 120: hollow part
130: Clutch part 140: Nipple
141: Nipple head 142: Nipple body
143: thread groove 150: spoke
153: Threaded

Claims (9)

A rim 100 having an annular rim body 110 having a hollow portion 120 formed therein and a nipple 140 coupled to the rim body 110 and a spoke 1. A wheel having a rim comprising:
Wherein the reinforcement member is provided on the inner surface of the rim body having the hollow portion and the nipple is provided in contact with the reinforcement member. . The method according to claim 1,
Wherein the strength reinforcing part (200) is formed in a streamlined shape along the bottom surface of the hollow part (120) of the rim body (110) and has a downwardly convex sectional shape. 3. The method of claim 2,
Wherein the strength reinforcing parts (200) are spaced apart from each other along the circumferential direction of the rim body (110). 3. The method of claim 2,
The nipple 140 is composed of a nipple head 141 and a nipple body 142 extending in one side with a cross sectional area smaller than that of the nipple head 141,
The nipple body 142 penetrates the strength reinforcing portion 200 and the rim body 110 in order and is fastened to the spokes 150 from the outside of the rim body 110. The nipple head 142 Is in contact with the strength reinforcing portion (200). 3. The method of claim 2,
The nipple 140 is composed of a nipple head 141 and a nipple body 142 extending in one side with a cross sectional area smaller than that of the nipple head 141,
The opposite surface of the nipple head 141 in which the nipple body 142 is formed is in contact with the strength reinforcing portion 200 and the spokes 150 pass through the rim body 110 and the strength reinforcing portion 200 in turn, And the wheel is engaged with the wheel. A rim 100 having an annular rim body 110 having a hollow portion 120 formed therein and a nipple 140 coupled to the rim body 110. The nipple 140 is fastened to the nipple 140, 100 and a boss (400), the wheel having a rim including a spoke (150)
Wherein the rim (100), the spokes (150), and the bosses (400) are integrally formed and configured in a monocoque type. A rim 100 having an annular rim body 110 having a hollow portion 120 formed therein and a nipple 140 coupled to the rim body 110 and a spoke 1. A wheel having a rim comprising:
The clamper part 130 for fixing the tire is formed on the outer side of the rim body 110 in the radial direction and the emboss part 500 is provided on the surface of the clutcher part 130 Wheels with rims. Performing lapping of the carbon fabric on the rim part of the lower mold 610;
Setting a first spoke and a boss (400) on the spoke part and the boss part of the lower mold (610), respectively;
Setting an intermediate mold (630) on top of the first spoke and boss (400);
Setting a second spoke and boss (400) on top of the intermediate mold (630);
Covering and pressing the upper mold 620 on the upper and lower molds 610 and 630;
Blowing air to the rim part and curing and cooling; And
And separating the manufactured wheel from the mold. ≪ RTI ID = 0.0 > 11. < / RTI > 9. The method of claim 8,
Wherein the lower mold (610) and the upper mold (620) are subjected to an etching treatment for forming an embossed portion having a concavo-convex shape at a portion corresponding to the clunter portion of the rim in the rim portion .

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