TWI597188B - Tubeless bicycle rim structure - Google Patents

Description

Tubeless bicycle rim structure

The invention relates to a rim structure for bicycles, in particular to a bicycle and not using an inner tube, which can maintain tire pressure for a long period of time, reduce sidewall flexing and wind resistance, and can increase the volume of the carcass and reduce the rolling resistance, and A rim structure that improves impact resistance.

The wheel is the foot of the vehicle, and no wheel can't move the vehicle. Except for the vehicle that needs to move along the track, the vehicles commonly used in the market often have wheels, that is, the rolling of the wheel causes the vehicle to advance or retreat.

The structure of the wheel is roughly composed of a rim, and the outer diameter of the wheel is equipped with a rubber tire. In the case of a bicycle wheel, there is still a pair of inner tubes between the rim and the tire, and there are "with inner tube" and "no tube". On the other hand, the wheel will also be a "Tubular" or "Clincher" for the type of bicycle tire. The "tube" refers to the section of the tire that is closed by a closed tubular shape. The ring type, the "opening tire" is a ring shape extending in the shape of an open U. After extending a predetermined height on both sides of the bead, the tire has a bead structure at the extended end and is assembled with the bead portion. For the rim, the "opening" is usually used for the wheel structure of "Tube Type" and "Tubeless".

In the case of a bicycle rim, there is generally a circular frame and a hub seat at the center, and a plurality of spoke assemblies are radially arranged therebetween to form an overall structure of the bicycle rim; Available in aluminum or carbon fiber applications. As the wheels have the aforementioned "tubes", "with inner tubes" and "no tubes", the rim structure is also different. The rims used in the analysis of "tubes" are mostly hollow-shaped frames, and the outer diameter of the frame is provided with grooves to form tires. The rim structure is as disclosed in the new patent No. 104203135. The rim of the tube tire"; the rim frame that cooperates with the "opening tire", except for the outer frame of the hollow ring, will extend a U-shaped frame radially outward of the frame, on both sides of the extension The edge of the frame forms a hook-and-edge structure to provide an open tire with a bead that can be snapped over the hook.

Further analysis of the rim structure used in "tubeless", because the inner tube is not formed between the rim and the tire, the air directly enters the space formed by the rim and the tire, so the tightness between the rim and the tire The requirement is higher to reduce the loss of air from the gap between the two, so the structural design of the bead and the hook is very important.

Such a bicycleless tubeless rim structure having a hook design, such as the bicycle wheel rim and the bicycle wheel including the rim disclosed in the Japanese Patent No. 097143704, the rim includes a substantially annular extension a body having a radially outer portion shaped to couple with the tire, the radially outer portion including an annular bottom wall, the annular bottom wall being provided with a bore for an inflation valve, the annular bottom wall including a central annular recess and two side annular portions disposed on axially opposite sides with respect to the central annular recess, the recess being at least on one side thereof and at least circumferentially away from the cross section of the rim The region of the bore includes a radially inner surface and a radially outer surface, wherein the radially outer surface has a different bend radius than the radius of curvature of the radially inner surface.

A bicycle-less rim structure having a hook design, such as the bicycle wheel rim structure disclosed in the Japanese Patent No. 101117393, comprising: a rim comprising a first annular side portion and a second annular side And an annular bridging portion extending between the first annular side portion and the second annular side portion, the annular bridging portion including an outer rim surface having at least one opening; at least one cap, Inserted into the at least one opening along an insertion direction, each of the at least one cap comprising a base plate having a lower surface overlying the outer rim surface and extending from the lower surface along the insertion direction to a plurality of protruding portions in the opening, wherein the plurality of protruding portions and the opening are sized relative to each other such that the cap is provided by the protruding portion because the protruding portion is provided with the protruding portion Deformation in the insertion direction extending into the opening and against the rib of the inner edge of the opening to bias the annular bridge portion and being held in the opening; and the strap member is attached to The outer rim surface is superposed The base plate member, the tape member is sized to cover the interface between the peripheral edge of the base plate member with the outer rim surface.

There is also a bicycle tubeless rim structure with a hook design, such as the "bike rim inner edge fastening structure" disclosed in the domestic patent No. 094210506, the rim outer frame edge is formed with a tire embedded positioning. a groove-shaped one of the groove, the inner frame edge is formed with a spoke wire for engaging with one of the ring ribs, wherein the two sides of the extension wall are respectively formed with an inwardly convex portion; : on the opposite inner side of the two sides of the insert, provided with a predetermined spacing Drying the solid portion, so that the inner edge of the insert portion has a slightly concave concave contour; by the above structure, when the tire is embedded and positioned in the tire groove and inflated to saturation, the edge of the tire embedding portion is sufficient Pressing on the opposite inner edges of the two sides of the fastening portion and the fitting portion, the tamping effect can be achieved.

In the above structure, the bicycle rim structure used for the "opening tire" (Centre) and the "tubeless" is mainly provided in the open groove of the rim radially outward, and is provided in the open groove. The extended ends of the two side edges are respectively formed with hook-shaped flange-shaped hooks to be in contact with the tire's bead, which is a technical feature of the conventional tubeless rim structure.

However, such a tubeless bicycle rim structure has a high technical application and high manufacturing difficulty when manufacturing the rim. On the other hand, in use, the tire is required to be wound when the tire is assembled. The rim of the rim is so that the deflection of the bead is large, resulting in a large wind resistance of the ride. In addition, the hook design makes the rim strength weakened. If the impact is easy to cause damage to the rim, it will cause gaps and air leakage, and can no longer be used to increase maintenance costs.

In view of the above, the bicycle tire rim structure disclosed in the present invention comprises: a wheel frame group having an inner frame in a hollow seat shape and one of the inner frame groups integrally connected thereto The outer frame and the outer frame are in the form of a radially outwardly open slot-like seat; a set of tires is formed in the slot of the outer frame, and has a seat at the bottom of the outer frame groove. And a side wall adjacent to the socket and located at a sidewall of the outer frame groove, the socket is provided with a flange-shaped locking portion at a predetermined distance from the side wall, and the side wall is an outer wall The edge wall, an inner edge wall and a top edge are formed together, and the inner edge wall has a flat planar shape, and each of the side wall, the bearing seat and the clamping part form the bicycle tire, and the bead portion thereof can be stably connected With the above-mentioned members, the inner wall of the side wall is flat and has no structural design of the hook flange, which can effectively simplify the structure and the process to reduce the manufacturing cost and the product defect rate, and the inner edge of the side wall The wall is flat, which increases the rigidity and service life of the rim and reduces maintenance costs. The structural design of the tire are assembled, the fitting can achieve a better adhesion property and having a long time to maintain the air pressure effect, together with the design of the endless flange can flex bead small, the effect of reducing drag.

The main object of the present invention is to provide a bicycle wheel rim structure without a tube, wherein the inner wall edges of the side walls of the rims of the rims facing radially outward are flat and flat, and there is no hook at the extended end of the side wall. The edge structure can effectively simplify the structure, can be relatively simple and easy to manufacture, reduce the use of the process and related tools, and reduce the manufacturing cost, and at the same time reduce the flexing and wind resistance of the bead.

A second object of the present invention is to provide a bicycleless rim structure without a hook, which has a hooked structure that reduces the degree of deflection of the bead and reduces windage.

Still another object of the present invention is to provide a bicycleless rim structure without a tube, which has a structure without a hook to enhance the rigidity and service life of the rim, and to improve impact resistance and reduce the probability of damage.

A further object of the present invention is to provide a bicycleless rim structure without a tube, which is assembled with a tire of a special structural design, and has a large contact area between the rim and the bead, which can achieve better adhesion and can be used for a long time. Maintain tire pressure and reduce air leakage.

[this invention]

(10) ‧‧‧wheel frame group

(11) ‧‧‧ inside frame

(12) ‧‧‧ frame

(20) ‧‧‧ Tire Group

(21) ‧ ‧ sec

(22)‧‧‧Side wall

(221) ‧ ‧ rim wall

(222) ‧‧‧ inner wall

(223)‧‧‧Top edge

(23)‧‧‧Card Department

(α)‧‧‧ angle

(β)‧‧‧ height difference

(γ)‧‧‧ distance

(δ)‧‧‧ spacing

(ε)‧‧‧ Height

(μ)‧‧‧round

(ν)‧‧‧ inverted arc

( ο )‧‧‧Arc flange

(ω)‧‧‧ thickness

(50) ‧‧‧Bicycle tires

(51)‧‧‧Fetal lip

(52) ‧‧‧ card edge

(53) ‧ ‧ card arrival

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is a perspective enlarged view of a preferred embodiment of the present invention.

The third figure is a schematic sectional view of a preferred embodiment of the present invention.

The fourth figure is a schematic cross-sectional view of a preferred embodiment of the present invention.

Figure 5 is a first schematic view of the assembled state of a preferred embodiment of the present invention.

Figure 6 is a second schematic view of the assembled state of a preferred embodiment of the present invention.

Figure 7 is a third schematic view of the assembled state of a preferred embodiment of the present invention.

Figure 8 is a schematic view showing the assembled state of another preferred embodiment of the present invention.

First, referring to the first to third figures, a bicycleless wheel rim structure provided by the present invention is connected to a bicycle tire (50), which comprises: a wheel frame group (10), and The wheel frame group (10) is integrally connected to one of the tire assembly groups (20).

The wheel frame group (10) has an inner frame (11) in a hollow seat shape, and an outer frame (12) is integrally connected with the inner frame (11) group, and the outer frame (12) is The frame (12) has a shape of a slot-shaped seat that faces radially outward.

The tire assembly group (20) is formed in the groove of the outer frame (12), has a seat (21) at the bottom of the outer frame (12), and is opposite to the seat (21) a side wall (22) adjacent to the side wall of the outer frame (12); the socket (21) is provided with a flange-shaped locking portion at a predetermined distance from the side wall (22) 23); the side wall (22) is composed of an outer edge wall (221), an inner edge wall (222) and a top edge (223), and the inner edge wall (222) is flat and flat. Each of the inner edge wall (222) and the top edge (223) are adjacent to each other in a rounded shape; the side wall (22) is vertical; adjacent to each of the seats (21) and the side wall ( 22) The two are at an angle (α) to each other. In the embodiment, the angle (α) of the angle is 90°; each of the side wall (22), the seat (21) and the locking part (23) Together, the bicycle tire (50) has a space in which the bead (51) portion can be stably connected.

By the above-mentioned members, the structural design of the inner wall of the side wall (22) is flat and has no hooked flange, which can effectively simplify the structure and the process to reduce the manufacturing cost and the product defect rate, and the inner edge of the side wall The wall is flat, which can increase the rigidity of the rim and the service life of the tire, and reduce the maintenance cost. At the same time, it can be assembled with the tires of special structural design to achieve better fitting and tightness, and maintain the tire for a long time. The pressure effect, so it has excellent practicality and economic benefits.

For a further understanding of the structural features of the present invention, the use of technical means, and the desired benefits, the manner of use of the present invention is described as follows:

Referring to the fourth figure, the present invention integrally forms each of the outer frame (12) and the inner frame (11), and simultaneously forms the side wall (22) and the seat in the groove of the outer frame (12). (21) and the carding portion (23), and each of the side wall (22) and the seat (21) are adjacent to each other at the angle (α); wherein the angle (α) has a value ranging from 70° to 150°; each of the side walls (22) extends radially outwardly by a height (ε) having a height (ε) dimension ranging from 2 mm to 8 mm; and the side walls on both sides of the outer frame (12) ( 22), the distance between the two has a spacing (δ), and the distance dimension ranges from 10 mm to 35 mm; the side wall (22) has a thickness (ω), and the size ranges from 1 mm to 2.5 mm; each of the sockets ( 21) The portion adjacent to the side wall (22) is arcuately rounded (μ), and the arc value ranges from 0 mm to 2 mm; the carding portion (23) is higher than the socket (21) a plane height difference (β), the height dimension of the range of 0.1mm~1.0mm; the card part (23) is an arc-shaped arc flange ( o ), the arc size value range is 0.3mm ~ 2mm; of the clamping portion (23) of the arc of the flange (o) of each portion adjacent to the socket (21), the arcuate concave shape based An inverted circular arc (ν) having a rounded corner value ranging from 0.3 mm to 2 mm; a distance (γ) between the inner edge wall (222) of the side wall (22) and the engaging portion (23) is The width of the socket (21) has a size ranging from 1 mm to (δ - 5) / 2 mm.

For the bicycle tire (50) used in conjunction with the present invention, please refer to the fifth figure, the bicycle tire (50) (broken line portion) is provided on the two sides of the bead (51) on the two sides of the predetermined portion of the bead, respectively, convex One of the clamping edges (52); the abutting portion of the bead (51) and the inner side wall of the tire is a snap-in portion (53).

When the bicycle tire (50) is assembled with the bicycle tire (50), one side of the bicycle tire (50) is placed inside the outer frame (12), and the other side of the bicycle tire (50) is pressed. It is deformed to be placed inside the outer frame (12); please refer to the sixth figure to start pumping the bicycle tire (50), and the sidewalls of both sides begin to expand toward the outside, and gradually become toward the sides. The side wall (22) moves; please refer to the seventh figure, when the inflation is saturated, the bicycle tire (50) will be firmly clamped inside the outer frame (12), and the card abutting portion (53) will The abutting card is formed on the locking portion (23), and the clamping edge (52) is clamped at the top edge (223), and the two side edges of the bead (51) are completely adhered to The side wall (22) and the socket (21) together form an adjacent L-shaped wall surface.

Each of the side walls (22) of the present invention has a flat planar state on the inwardly facing side wall edge, and is not provided with any hook-like or inward-flange-like any hooking structure, and the side walls are combined. The L-accommodating space formed by the bearing seat (21) and the locking part (23) has the following effects in addition to the space in which the tire lip (51) of the bicycle tire can be accommodated and locked:

1. The side wall (22) on both sides of the outer frame does not have a hook-hook structure, and the rim of the invention has a simple overall structure and a simplified structure.

2. Because the side wall (22) on both sides of the invention does not have a hook-like hook structure, the technical difficulty is effectively reduced, the manufacturing is relatively simple and easy, the process and related tools are reduced, and the manufacturing cost is reduced. To solve the problem of manufacturing difficulties.

3. In the present invention, when the bicycle tire (50) is assembled, each of the bead (51) is disposed in the outer frame (12) without being obstructed by the conventional hooking edge as in the conventional structure. The sidewall flexion is small and can increase the carcass volume and reduce the rolling resistance.

4. The side wall (22) on both sides of the outer frame does not have a hook-like hook structure. The rigidity of the rim can be enhanced during riding, and the service life of the rim and the tire can be increased at the same time, and the probability of burning the frame and the maintenance cost are reduced.

5. The bicycle tires (50) of the present invention with special structure are assembled with each other, and the two adjacent sides of the bead (51) are completely adjacent to each of the side walls (22) and the seat (21). Adjacent to the inner side wall surface, each of the bead (51) and the outer frame (12) has a large contact area, which can achieve better adhesion; thereby maintaining the tire pressure for a long time and reducing the leakage of air. The situation occurs to solve the problem that the conventional tubeless rim and the tire are prone to air leakage.

Please refer to the eighth embodiment, which is another embodiment of the present invention, wherein an angle α between adjacent supports (21) and the side wall (22) is obtuse; the bicycle tire is assembled (50). When the two sides of the bead (51) are adjacent to each other, they can also completely abut against the inner wall surface of each of the side wall (22) and the seat (21) adjacent to each other. Other manufacturing methods, assembly methods, assembly and disassembly actuation states, and expected effects of the present embodiment are all identical to the first embodiment described above.

In summary, the "tubeless bicycle rim structure" disclosed in the present invention provides a tubeless rim which is excellent in adhesion and impact resistance, and can maintain tire pressure for a long time and reduce air leakage. The structure adopts a structural design in which the inner wall of the side wall is flat and has no hooked flange, and the L-receiving space formed by the side wall, the socket and the carding portion is combined to make the bead assembly The contact area with the outer frame is large, and there is no hook design, which can effectively reduce the flexural and wind resistance of the bead, increase the volume of the carcass and reduce the rolling resistance, and effectively simplify the structure and process of the rim to reduce manufacturing. Cost, and increase the rigidity of the rim, this design can increase the service life of the rim and tire at the same time, and reduce maintenance costs. The bicycle-free rimless wheel structure has been obtained, which makes the whole industry practical and cost-effective, and its structure has not been seen in books or public use, and it is in line with the requirements of invention patent applications. As soon as the patent is granted, it is a prayer.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

(11) ‧‧‧ inside frame

(12) ‧‧‧ frame

(20) ‧‧‧ Tire Group

(21) ‧ ‧ sec

(22)‧‧‧Side wall

(221) ‧ ‧ rim wall

(222) ‧‧‧ inner wall

(223)‧‧‧Top edge

(23)‧‧‧Card Department

Claims (11)

A tubeless bicycle rim structure is connected to a bicycle tire, and comprises: a wheel frame group having an inner frame in a hollow seat shape and integrally connected with the inner frame group An outer frame, and the outer frame is in the shape of a radially outwardly open grooved seat; a set of tires is formed in the groove of the outer frame, and has a bearing at the bottom of the outer frame groove a seat, and a side wall adjacent to the seat and located at a side wall of the outer frame groove, the socket is provided with a flange-shaped locking portion at a predetermined distance from the side wall, the side wall is An outer edge wall, an inner edge wall and a top edge are formed together, and the inner edge wall has a flat planar shape, and each of the side wall, the socket and the clamping portion jointly form the bicycle tire, and the bead portion thereof can be A space for solid connection. The bicycle rim structure of the tubeless tube according to claim 1, wherein each of the inner edge wall and the top edge adjacent to each other has a rounded shape. The bicycle rim structure of the tubeless tube according to claim 1, wherein the side wall is vertical; the adjacent ones of the pedestals and the side walls are at an angle to each other, and the angle value ranges from 70 °~150°. The bicycle rim structure of the tubeless tube according to claim 1, wherein each of the side walls extends radially outward to a height, and the height dimension ranges from 2 mm to 8 mm. The bicycle rim structure of the tubeless tube according to claim 1, wherein each of the side walls on both sides of the outer frame has a spacing between the two, and the distance dimension ranges from 10 mm to 35 mm. The tubeless bicycle rim structure according to claim 1, wherein the side wall has a thickness ranging from 1 mm to 2.5 mm. The bicycle rim structure of the tubeless tube according to the first aspect of the invention, wherein each of the socket and the side wall adjacent to each other has an arc shape and is rounded, and the arc value ranges from 0 mm to 2 mm. The tubeless bicycle rim structure according to claim 1, wherein the clamping portion is higher than a height difference of the bearing plane, and the height dimension ranges from 0.1 mm to 1.0 mm. The tubeless bicycle rim structure according to claim 1, wherein the engaging portion has an arc-shaped arc-shaped flange, and the arc-shaped dimension ranges from 0.3 mm to 2 mm. The bicycle rim structure of the tubeless portion according to claim 9, wherein the arcing flange of the engaging portion and the seat abutting each other are concave arcs of a concave arc, and the rounded corners thereof Size values range from 0.3mm to 2mm. The bicycle rim structure of the tubeless tube according to claim 1, wherein each of the side walls on both sides of the outer frame has a spacing δ, and the distance dimension ranges from 10 mm to 35 mm; The distance from the inner edge wall to the carding portion is a distance, which is the width of the socket, and the size thereof ranges from 1 mm to (δ - 5) / 2 mm.