WO2011137660A1

WO2011137660A1 - Connection structure of rim using tubeless tyre and spoke and processing method thereof

Info

Publication number: WO2011137660A1
Application number: PCT/CN2011/000717
Authority: WO
Inventors: 涂季冰
Original assignee: 昆山亨利金属科技有限公司
Priority date: 2010-05-07
Filing date: 2011-04-25
Publication date: 2011-11-10
Also published as: CN101817286B; CN101817286A

Abstract

A connection structure of a rim using tubeless tyre and spokes includes a rim (1), spokes (3) and copper heads (6). The rim (1) includes a steel wire surface (11) and a bead surface (12). There is no hole in the bead surface (12). The steel wire surface (11) is provided with several bosses (4). Each boss (4) includes a blind hole with an internal thread as a spoke hole (5). The spoke holes (5) are 5 mm in depth at least, and in each spoke hole (5) there is a tubular connecting part (7) which matches the spoke hole (5) with an external thread. A circular snap ring (71) which is near the spoke (3) side is provided on the inner wall of the connecting part (7). The bigger diameter end of the copper head (6) is set inside the connecting part (7), while the smaller one is set outside the connecting part (7) and connected to the spoke (3). Besides, the invention also discloses a processing method of the connection structure. The connection structure and the processing method ensure a good sealing, facilitate dismounting of spokes and reduce use and maintenance costs of finished products.

Description

Connection structure of rim and spoke using tubeless tire and processing method thereof

The present invention relates to a bicycle or motorcycle component, and more particularly to a connection structure of a rim and a spoke using a tubeless tire and a method of processing the same. Background technique

The tubeless rim has the advantages of light weight, simple structure and good sealing performance. It is a high-end product and development trend in bicycle and motorcycle rings.

The existing connection between the rim and the spoke using the tubeless tire is as shown in Fig. 1. The tubeless rim 1 is divided into two layers, the steel surface 11 and the bead surface 12, and the existing tubeless rim is usually The bead face 12 is open, the copper head 4 and the spokes 3 are passed through, the spokes 3 are extended from the wire surface 11, and then the bead face 12 is sealed, and the tire is mounted. Although this technology can ensure the sealing property, the problem is that the assembly is not convenient. When the ordinary person is in use, if the spoke is broken, it cannot be replaced by itself. Disclosure of invention

The problem to be solved by the present invention is to provide a connection structure of a rim and a spoke using a tubeless tire and a processing method thereof, which can facilitate the disassembly and assembly of the spoke on the basis of ensuring the sealing property, and reduce the use and maintenance cost of the finished product.

The object of the invention is achieved in this way:

a joint structure of a rim and a spoke of a tubeless tire, comprising a rim, a spoke and a copper head; wherein the rim comprises a wire surface and a bead surface, the bead surface is not perforated; a boss, each of the bosses having a blind hole with an internal thread as a spoke hole, the spoke hole having a depth of at least 5 mm;

Each of the internally threaded spoke openings is provided with a tubular connecting member with an external thread cooperating therewith; the connecting member projects inwardly from an inner wall of one side of the spoke to form an annular snap ring.

The larger diameter end of the copper head is disposed in the connecting member, and the copper head has a smaller diameter outside the connecting member and is connected to the spoke.

The snap ring may be a structure in which the inner wall of the connecting member protrudes inwardly, or may be a separate snap ring fixedly connected to the inner wall of the connecting member.

The copper head is located on an outer surface of the inner portion of the connecting member and has a rubber ring, and the rubber ring is located The portion of the copper head having a larger diameter is between the ring of the inner wall of the connecting member.

The connecting member protrudes outward from an outer wall of one end of the spoke to form a convex ring.

A method of processing a joint structure of a rim and a spoke using a tubeless tire, characterized in that it comprises the following steps:

a making a rim, wherein the thickness of the wire surface is greater than 5 mm;

b rim wire surface is subjected to milling processing to form a plurality of bosses;

c drilling spoke holes in the boss;

d tapping in the spoke hole;

e passing the copper head through the connector and connecting the spoke to the copper head;

f Finally connect the connector to the boss thread.

In the c step, drill the spoke holes using a normal drill or a hot melt drill.

In the e step, the rubber ring is also placed over the copper head. The rim of the invention is a tubeless rim, and the surface of the rim of the rim is thicker than the surface of the ordinary bicycle ring in the blank, and the part other than the joint of the spoke is processed by milling, and the excess part is cut off on the wire surface. A plurality of bosses are formed. The shape of the arc can be designed with different arc lengths and shapes depending on the weight of the full turn, the force and function of the spoke holes. When the inner tube or the inner tube is not drilled, the wall thickness of the steel surface is directly drilled, and then the sealing treatment is performed in various manners. However, the method of drilling the spoke hole of the present invention does not drill the steel surface, but in the steel wire Leave a certain thickness on the surface. After each spoke hole is drilled, each spoke hole is tapped to complete the subsequent copper head assembly. The looped seams are treated by bump welding to provide a seal and lift strength.

The connecting member is provided with a snap ring and a convex ring, and the snap ring is used for clamping the copper head, and the convex ring mainly covers the contact surface of the boss and the connecting member, and is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic view showing a connection structure of a conventional rim and a spoke using a tubeless tire; FIG. 2 is a connection structure of a rim and a spoke using a tubeless tire according to the present invention; 3 is a schematic view showing a processing flow of a connection structure of a rim and a spoke using a tubeless tire according to the present invention;

In the picture: 1 rim, 1 1 wire surface, 12 tire lip surface, 3 spokes, 4 bosses, 5 spoke holes, 6 copper heads, 7 connectors, 71 snap rings, 72 collars, 8 rubber rings. The best way to implement the invention

The invention is further described below in conjunction with the drawings and specific embodiments.

2, FIG. 3 shows a connection structure of a rim and a spoke of a tubeless tire, including a rim 1, a spoke 3 and a copper head 6, wherein the rim 1 includes a wire surface 1 1 and a bead surface 12, and a bead surface 12 Without opening, the wire surface 11 is provided with a plurality of bosses 4, each of which has a blind hole with an internal thread as a spoke hole 5. The blind hole of the present invention is formed directly on the rim, and the spoke is directly connected to the rim. The spoke openings 5 have a depth of at least 5 mm. Each of the internally threaded spoke openings 5 is provided with a tubular connecting member 7 with an external thread cooperating therewith. The inner wall of one side of the connecting member 7 adjacent to the spoke 3 projects inwardly to form a snap ring 71, which may also be a separate component that is fixedly coupled to the inner wall of the connecting member 7. The larger diameter end of the copper head 6 is disposed in the connecting member 7, and the smaller diameter end of the copper head 6 is located outside the connecting member and is connected to the spoke 3. The copper head 6 is located on the outer surface of the inner portion of the connecting member 7 and is provided with a rubber ring 8 which is located between the portion of the copper head 6 having a larger diameter and the snap ring 71 of the inner wall of the connecting member 7. The snap ring 71 is used to catch the copper head 6, and the rubber ring 8 is used for cushioning to avoid friction between the copper head 6 and the snap ring 71. The connecting member 7 protrudes outward from the outer wall of one end of the spoke 3 to form a convex ring 72. The main function of the convex ring 72 is to cover the contact surface of the boss 4 and the connecting member 7, and the appearance looks beautiful. As shown in FIG. 3, the above-mentioned processing method for connecting a rim and a spoke using a tubeless tire is characterized in that it comprises the following steps:

a making a rim, wherein the thickness of the wire surface is greater than 5 mm;

b rim wire surface is subjected to milling processing to form a plurality of bosses; Jinhe Wheel Aluminum and the tires of the tires

There are blonde round aluminum tires and strips without inner ring

c drilling spoke holes in the boss;

d tapping in the spoke hole;

e Put the rubber ring on the copper head, then pass the copper head through the connecting piece, and connect the spoke to the copper head; f Finally, connect the connecting piece to the boss thread.

In the c step, drill the spoke holes using a normal drill or a hot melt drill.

In the embodiment, the rim production process is bump welding, and after the welding, the a-f process is prepared. In order to compare the actual effects of the present invention, the following comparative tests were carried out, and the material of the rim was the same aluminum alloy:

The first set of rims: The existing rim and spoke connection structure using the tubeless tire (Fig. 1) and the process flow (the rim is extruded).

Second set of rims: The connection structure and production process of the rim and spoke using the tubeless tire of the present invention.

The above two sets of rims were subjected to compressive strength, lateral rigidity, and spoke hole pull-out force for comparison experiments. The results are shown in Table 1 below:

Table 1 Specifications Performance Test Standards Actual Test Data

1. Compressive strength IS0/JIS standard: For rim 1. Compressive deformation: Apply a static load of 50KG for 2min to unload 0. 35-0. 4 After waking up the load, the permanent deformation of the load should be 2. Lateral rigid deformation: no more than lmm. 32 - 36mm

700C

2. Lateral rigidity GIANT standard: The circle level 3. The single spoke hole is not placed and divided into four equal parts, and the three points are fixed. The 1 / 4 shape is subjected to the maximum force: a load of 32KG is applied, and the deformation amount is 330KG.

Within 80mm. 4. Lifetime > 2000KM.

3. The spoke hole pulling force GIANT standard: the pair of spokes 1. The amount of compressive deformation: 300KG load is applied to the hole, and the spoke hole is 0. 25-0. 30匪.

Can't be deformed. 2. Lateral rigid deformation:

4. Walking test EN standard: Pressure 640N, 20_28mm.

700C

Rotating speed 25km/h (± 10%), wheel set and obstruction 3. Single spoke hole is invariable Blocks need to reach 750,000 impacts, the mileage is shaped to withstand the maximum force: 600km, no part of the wheel set is broken, 400KG.

Disengagement. 4. Life > 3000KM. As can be seen from the above Table 1, the spoke hole tension of the joint structure of the rim and the spoke of the tubeless tire is improved, and the overall compression resistance, lateral rigidity and life of the rim are improved.

Compared with the additional fixed parts, the cost of the original material and the installation is reduced; secondly, since the blind hole does not penetrate the rim, the rim of the invention has obvious advantages in mechanical properties and sealing performance, so the invention has the guarantee of sealing And increase the beneficial technical effect of strength.

In addition, the blind hole itself is part of the rim, which serves to increase the maximum force that a single spoke hole does not deform and to extend the life of the rim.

Secondly, the blind hole depth can only reach 5瞧 or more, in order to ensure the deformation resistance of the single spoke hole, the compressive strength of the rim and the spoke and the resistance to lateral deformation. The blind hole depth above 5 wakes is obtained through repeated experiments. proven. Industrial application, )·sheng

The invention has the following advantages:

The tubeless rim requires a good sealing effect. The present invention does not drill through the wire surface, so the entire inner cavity is itself a sealed body and does not require subsequent sealing treatment. The rim of the invention is processed by milling and cutting, and the weight is reduced while ensuring the force of the spokes. The invention can adopt both ordinary drilling and hot-melting drilling, and the process selects a wide surface. In summary, the invention not only ensures the sealing of the rim, but also facilitates disassembly and assembly, and the manufacturing process is simple.

Claims

Rights request

1. A joint structure of a rim and a spoke using a tubeless tire, comprising a rim, a spoke and a copper head; wherein the rim comprises a wire surface and a bead surface, the bead surface is not perforated; a plurality of bosses are disposed on the wire surface, each of the bosses having a blind hole with an internal thread as a spoke hole, the spoke hole having a depth of at least 5 mm;

Each of the internally threaded spoke holes is provided with a tubular connecting member with an external thread matched thereto; the connecting member is provided with an annular snap ring near one inner wall of the spoke;

An end of the copper head having a larger diameter is disposed in the connecting member, and a smaller end of the copper head is located outside the connecting member and connected to the spoke.

2 . The connection structure of a rim and a spoke using a tubeless tire according to claim 1 , wherein: the snap ring may be a structure in which an inner wall of the connecting member protrudes inward, or may be fixedly connected to an inner wall of the connecting member. Separate snap ring.

3. The connection structure of a rim and a spoke using a tubeless tire according to claim 1 or 2, wherein: the copper head is located on an outer surface of the inner portion of the connecting member and has a rubber ring, the rubber ring Located between the portion of the copper head having a larger diameter and the snap ring of the inner wall of the connecting member.

A joint structure for a rim and a spoke using a tubeless tire according to claim 3, wherein: said connecting member protrudes outwardly from an outer wall of one end of the spoke to form a convex ring.

5. A method for processing a connection structure of a rim and a spoke using a tubeless tire, comprising the steps of:

a making a rim, wherein the thickness of the wire surface is greater than 5 mm;

c drilling spoke holes in the boss;

d tapping in the spoke hole;

f Finally, connect the inside of the connector to the boss.

A method of processing a joint structure of a rim and a spoke using a tubeless tire according to claim 5, wherein: in the step c, the spoke hole is drilled using a normal drill or a hot melt drill.

A method of processing a joint structure of a rim and a spoke using a tubeless tire according to claim 5, wherein: in the step e, the rubber ring is sheathed on the copper head.