CN2763099Y

CN2763099Y - Bicycle wheel rim made of carbon fibre

Info

Publication number: CN2763099Y
Application number: CN 200420057333
Authority: CN
Inventors: 谢俊茂
Original assignee: YINGWEI ENGINEERING CO Ltd
Current assignee: YINGWEI ENGINEERING CO Ltd
Priority date: 2004-11-24
Filing date: 2004-11-24
Publication date: 2006-03-08
Anticipated expiration: 2014-11-24

Abstract

The utility model relates to a bicycle wheel rim made of carbon fibers, particularly a bicycle wheel rim made of the carbon fibers. The utility model uses a supporting wall which is arranged in the wheel rim to reinforce a wheel rim structure. The utility model comprises a wheel rim made of the carbon fibers. The wheel rim is in a ring-shaped hollow structure which is formed by that an upper wall, a lower wall, a left wall and a right wall are connected in a ring mode. The hollow position of the wheel rim is provided with the supporting wall which is connected with the inner wall of the wheel ring in order to reinforce the wheel rim structure. The inner wall of the wheel rim is provided with supporting wall to enhance the strength of the wheel rim to be suitable for impact force when the wheel rim is vibrated and impacted to protect the self structure of the wheel rim made of the carbon fibers.

Description

The carbon fiber bicycle wheel rim

Technical field

The utility model is about a kind of carbon fiber bicycle wheel rim, especially about a kind of supporting walls by this wheel rim inwall of connection, to strengthen the carbon fiber bicycle wheel rim of rim structure.

Background technology

The material that bicycle was utilized when making is from the irony or the corrosion-resistant steel in past, develops at present the aluminum alloy of the most normal use gradually.The utilization of aluminum alloy can make tare significantly alleviate, but for making tare more slim and graceful, now more having with the carbon fiber is the bicycle of material manufacturing.Utilize carbon fiber to be raw material, though its lightweight advantage is arranged, the general aluminum alloy of its cost is high.Under the common situation, most scope of only using for this material with vehicle frame or front and rear fork, but in stressing the bicycle racing market of competing for speed, full car weight amount is a very important consideration, so full car promptly utilizes the slim and graceful carbon fiber of quality to make vehicle body as much as possible.Thereby, even wheel rim also is to be raw material with the carbon fiber.In the carbon fibre rim manufacturing process, on the one hand will consider cost, wanting on the one hand can expendable weight, so known on the market at present carbon fibre rim all is the loop configuration of hollow form.Because carbon fiber is after hardened forming, its ductility reduces, and when hollow structure receives pressure in wheel rim, undercapacity is often arranged and impaired defective.So known utility model was once arranged, utilize the relative combination of left and right double framework, producing a rim structure with vertical support rib improves, though it can increase the intensity of wheel rim, its production method by about two frameworks rabbet mutually and form, not only need to establish in addition mould to make different frameworks, after this framework is made, still need by the high strength bonding technique, with this left and right sides framework tight joint, this kind utility model will significantly increase the required facility of manufacturing process, material, cost and time in fact.

Summary of the invention

The purpose of this utility model is to improve the intensity of carbon fibre rim, reduces the required step of manufacturing process, and reduces the cost and the expending of time.

In order to achieve the above object, the utility model provides a kind of carbon fiber bicycle wheel rim, this wheel rim by a upper wall, a lower wall with about the annular hollow structure that forms of two sidewalls institute articulating, and vacancy and be provided with the supporting walls of this wheel rim inwall in succession in this wheel rim.This supporting walls comprise across about two sidewalls horizontal supporting walls, perpendicular to the vertical supporting walls between the last lower wall, and comprise the formed cross bracing wall of the former two.

That is to say that the utility model provides a kind of carbon fiber bicycle wheel rim, this wheel rim be by a upper wall, a lower wall with about the annular hollow structure that forms of two sidewalls institute articulating, and vacancy and be provided with a supporting walls that connects this wheel rim inwall in this wheel rim.

According to design of the present utility model, this supporting walls be in succession should about a horizontal supporting walls of two sidewalls.

According to design of the present utility model, this supporting walls is a vertical supporting walls of this upper wall and this lower wall in succession.

According to design of the present utility model, this supporting walls be in succession this upper wall and this lower wall and should about a cross bracing wall of two sidewalls.

According to design of the present utility model, an epoxy resin foaming agent is connected airtight in this upper wall below, and this lower wall top also is tightly locked with an epoxy resin foaming agent.

Advantage of the present utility model is as follows: by at the wheel rim inwall supporting walls being set, can increase the intensity of wheel rim, be shaken to adapt to wheel rim, suffered impulsive force when clashing into, the structure of protection carbon fibre rim itself.Because the utility model utilizes existing mold, in manufacturing process, improved, make to produce integrated carbon fiber structural, so the engagement step that its processing procedure need not be extra can reduce manufacturing time, also, can't increase the expenditure of cost because of need not other molding jig.On the other hand, the supporting walls that the utility model produced, except that the vertical supporting walls of vertical direction, the cross bracing wall that horizontal supporting walls is in horizontal direction still arranged and include the vertical and horizontal direction.The supporting walls of different structure makes that applicable on the difference in functionality demand or the wheel rim of different structure its range of use is more extensive.

Description of drawings

Fig. 1 is the utility model first embodiment three-dimensional cutaway view.

Fig. 2 is the utility model first embodiment cutaway view.

Fig. 3 is the utility model second embodiment cutaway view.

Fig. 4 is the utility model the 3rd embodiment cutaway view.

Wherein, description of reference numerals is as follows:

The 10-wheel rim; 11-tire groove; The 12-upper wall; The 13-lower wall; The 14-sidewall;

15-the-buffer body; 16-second buffer body; The horizontal supporting walls of 17-;

18-indulges supporting walls; 19-cross bracing wall; The 20-tire.

The specific embodiment

See also Fig. 1, Fig. 2, this figure is the cutaway view of the utility model first embodiment, and the utility model comprises a bicycle carbon fibre rim 10, and this wheel rim 10 is connected a hollow and annular thing that is defined by a upper wall 12, a lower wall 13 with two sidewalls 14.This upper wall 12 is concave arc configuration in, its top be one can with tire 20 corresponding tire grooves 11, this tire 20 promptly by this circular-arc tire groove 11, depends on and is fixed on this wheel rim 12.

Upper wall 12, lower wall 13 and sidewall 14 are all made by carbon fiber material, in the manufacturing process, by the inflation of mould and nylon tube, insert the carbon fiber material particle in the mould, form the wheel loop-shaped through heating and pressurizing, become a solid-state configuration with certain degree of hardness.In the manufacturing process,, construct so can form a hollow tubular after the moulding because gas filed nylon tube is clogged in wheel rim axle center.The utility model then is to insert two nylon tubes before moulding in mould, and present the push-down stack shape after those nylon tube inflations, during the heating and pressurizing moulding, gap between those nylon tubes has carbon fiber material and enters, promptly form a reinforced structure with horizontal supporting walls 17 after the moulding, this horizontal supporting walls 17 is across between two sidewalls 14, and the mono-hollow space separates two hollow spaces up and down originally.Horizontal supporting walls 17 of the present utility model is together made because of utilizing identical carbon fibre material and this wheel rim 10, and integrated finished product need not follow-up unnecessary engagement step, can reduce spent time of processing procedure and cost.In addition, the horizontal supporting walls 17 of present embodiment is owing to two sidewalls 14 about support wheel rim 10, so than the elder, can strengthen the stress of its horizontal direction, and because the support of horizontal direction for lower wall internal diameter on the wheel rim, being suitable for vehicle body can be not overweight, or the less car type of impact when advancing.

Second embodiment of the present utility model sees also Fig. 3, and in the present embodiment, the making of wheel rim as previously mentioned, but two nylon tubes that it is inserted when moulding, arrangement mode arranged side by side about one-tenth, thereby after the wheel rim moulding that makes produces a vertical supporting walls 18 perpendicular to 13 of upper wall 12 and lower walls.Owing to should indulge the support of supporting walls 18 upper walls 12 and lower wall 13, and, more have it to support the effect of strengthening for bump from top to bottom.So the vertical supporting walls 18 of present embodiment than the elder, can be strengthened the stress of its vertical direction for wheel rim sidewall internal diameter, and because the support of vertical direction is suitable for the heavier person of vehicle body, or the big car type of impact when advancing.

The 3rd embodiment of the present utility model sees also Fig. 4, in the present embodiment, the making of wheel rim is also as described in first embodiment, but it inserts four nylon tubes when moulding, those nylon tubes are matrix pattern and arrange, thereby after the wheel rim moulding that makes, produce one simultaneously perpendicular between upper wall 12, the lower wall 13 and between two sidewalls 14, one is a cross bracing wall 19 of cross configuration.This cross bracing wall 19 is strengthened the vertical and horizontal direction simultaneously, and for strengthening effect the best of carbon fibre rim, it is more to be fit to the collision chance, and the bigger car type of impulsive contact force is used.

Because after the carbon fiber hardened forming, this elasticity of non-restoring, when this carbon fiber receives collision or extruding, cause the cracked of this material easily, though the supporting walls that the utility model increased, can significantly improve the intensity of hollow structure, but the buffering of buffer body is arranged, also can make carbon fibre rim more strong.Therefore, the utility model can be when extrusion forming, adds epoxy resin foaming agent or similar material, make moulding after, below upper wall 12, form first buffer body 15 that one deck is close to upper wall, then form second buffer body 16 that one deck is close to lower wall in the top of lower wall 13.First buffer body, the 15 top persons of accepting, come from the stress that is produced when tire and ground touch, especially when tire when the leap state lands, cooperate supporting walls, can support and cushion the impact that absorption produces, and do not cause between wheel rim upper wall place and sidewall because of the extruding of tire broken.Accept the bearing force that spoke transmits from wheel shaft as for 16 of second buffer bodies, can cushion the stress that is produced between lower wall 13 and spoke, with the structure between protection wheel rim lower wall place and sidewall.

Claims

1, a kind of carbon fiber bicycle wheel rim, it is characterized in that this wheel rim be by a upper wall, a lower wall with about the annular hollow structure that forms of two sidewalls institute articulating, and vacancy and be provided with a supporting walls that connects this wheel rim inwall in this wheel rim.

2, carbon fiber bicycle wheel rim as claimed in claim 1 is characterized in that the horizontal supporting walls of this supporting walls for two sidewalls about being somebody's turn to do in succession.

3, carbon fiber bicycle wheel rim as claimed in claim 1 is characterized in that this supporting walls indulges supporting walls for this upper wall in succession and one of this lower wall.

4, carbon fiber bicycle wheel rim as claimed in claim 1 is characterized in that this supporting walls is this upper wall in succession and this lower wall and a cross bracing wall of two sidewalls about this.

5,, it is characterized in that connecting airtight an epoxy resin foaming agent below this upper wall, and this lower wall top also is tightly locked with an epoxy resin foaming agent as claim 1,2,3 or 4 described carbon fiber bicycle wheel rims.