CN2790894Y

CN2790894Y - Iproved front-fork vertical tube structare

Info

Publication number: CN2790894Y
Application number: CN 200520005576
Authority: CN
Inventors: 陈育玄
Original assignee: ADK TECHNOLOGY Ltd
Current assignee: ADK TECHNOLOGY Ltd
Priority date: 2005-03-10
Filing date: 2005-03-10
Publication date: 2006-06-28
Anticipated expiration: 2015-03-10

Abstract

The utility model relates to an improved front-fork vertical pipe structure comprising a vertical pipe, a front fork, a front pipe and a sleeve joint part, wherein the vertical pipe is provided for the sleeve joint part and the front pipe to sheath. The connecting position of the vertical pipe and the front fork is a curve part; the lower end of the sleeve joint part forms a shape corresponding to the curve part of the front fork, and the outer diameter of the top end of the sleeve joint part is equal to the outer diameter of the bottom end of the front pipe; the center of the sleeve joint part is provided with a sheathing hole which is used for being sheathed with the vertical pipe and forms the combination state of close fit with the vertical pipe; the lower end of the sleeve joint part is connected and combined with the curve part and is integrally connected with the lower end of the front pipe. The smooth integrality of the appearance is kept, and the assemblage is convenient.

Description

Improved standpipe of front fork structure

Technical field

The utility model relates to a kind of bicycle assembly parts, but relates in particular to a kind of saving in material and built-up time, and has the improved standpipe of front fork structure of shock-absorbing effect.

Background technology

Bicycle has can go on a long journey the characteristic of taking into account environmental protection again, and in today of paying attention to recreation, is engaged in stress-relieving activity out of doors, experiences the scene of the Nature, and the optimum walking-replacing tool that also can reach motion health is by bike.Bicycle goes for a drive and not only can go in for physical training, and also can contribute to one's peace of mind of inner tranquility, and is best suited for the modern, and under the situation in not two days week, people have more increased many leisure times.Therefore under the situation that living standard promotes, the various improvement design of bicycle are more paid attention to by people, and along with the attention of user to the various functions of bicycle, many new designs are also arisen at the historic moment thereupon.

See also the Taiwan patent No. 547416, " bicycle front fork vertical tube structure ", it is current general dealer's the bicycle front fork on the market and the design of vertical tube, the vertical tube of existing bicycle upper end and the front fork of lower end differ about 20mm because of caliber, therefore have vertical stage in front fork and vertical tube junction poor, when therefore Surface Mount is established the carbon fiber composite wood outside, because this carbon fiber composite wood can't bend, this place certainly will cause the puzzlement of processing operation, and prolongation assembling process, add user's seeking change and innovation now, the not good product of profile also can have a strong impact on the sale of finished goods amount.And the external diameter stage between this front fork and vertical tube is poor, not only do not meet the streamline styling design, more can't satisfy user's demand in appearance, also do not have any other additional effect, therefore as a complete unit, existing bicycle front fork and vertical tube structure design poor practicability, this front fork and vertical tube junction truly have the necessity that is improved.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the defective of the design existence of existing bicycle front fork and vertical tube, and provide a kind of improved standpipe of front fork structure, it can improve existing front fork and vertical tube joint be difficult for the being sticked shortcoming of effects such as carbon fiber, no shock-absorbing buffering, the utility model can promote integrally-built intensity, eliminate structural stress, and then reach lightweight effect.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of improved standpipe of front fork structure comprises a vertical tube, a front fork and a preceding pipe; It is characterized in that, be provided with a Coupling, described vertical tube is established for Coupling and preceding pipe box, and the junction of this vertical tube and front fork is a curve part, the lower end of this Coupling is corresponding shape with the curve part of front fork, Coupling top external diameter then equates with preceding pipe bottom external diameter, and Coupling central authorities are provided with a sheathed hole, this sheathed hole is in order to be inserted in vertical tube, and being friction tight bonding state with vertical tube, this Coupling lower end engages with curve part, and fuses with preceding pipe lower end, keep the smooth-going globality of outward appearance, and ease of assembly.

Aforesaid improved standpipe of front fork structure, wherein Coupling is to make with plastic material, and has the effect of shock-absorbing buffering.

The utility model can improve existing front fork and vertical tube joint be difficult for the being sticked shortcoming of effects such as carbon fiber, no shock-absorbing buffering, and the utility model can promote integrally-built intensity, eliminates structural stress, and then reaches lightweight effect.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an exploded perspective scheme drawing of the present utility model.

Fig. 2 is a stereoscopic scheme drawing of the present utility model.

Fig. 3 is an outward appearance transparent view of the present utility model.

Fig. 4 is an assembling scheme drawing of the present utility model.

The number in the figure explanation:

10---vertical tube 11---front fork

110---curve part 111---fork arm

The sheathed hole of 12---Couplings 120---

20---preceding pipe 21---front-wheel

22---flower-drum

The specific embodiment

See also Figure 1 and Figure 2, the utility model comprises that (wherein this vertical tube and front fork can be made with composite for a vertical tube 10, front fork 11, with performance lightweight, high-intensity characteristic), preceding pipe 20 and a Coupling 12, this Coupling 12 is to make with compliant material, to reach the effect of shock-absorbing buffering.

Above-mentioned vertical tube 10 is long straight tube-like, and can be sheathed for Coupling 12 and preceding pipe 20, and vertical tube 10 lower ends are to link this front fork 11, vertical tube 10 is a curve part 110 with front fork 11 junction, these curve part 110 lower ends are two fork arms 111 of front fork 11, and this fork arm 111 is to combine with the flower-drum 22 of bicycle front-wheel 21.

Above-mentioned Coupling 12 is the streamline moulding of expansion downwards of upper end, end face is a plane on it, and the external diameter on this plane is to equate with preceding pipe 20, Coupling 12 central authorities then form a sheathed hole 120, the aperture in this sheathed hole 120 is rough to be equated with vertical tube 10 external diameters, is friction tight bonding state so can be sheathed on the vertical tube 10 with vertical tube 10.These Coupling 12 lower ends are then corresponding with front fork 11 curve parts 110, so that when being sheathed on vertical tube 10 bottoms, can fit closely with curve part 110, and the effect that obtains cushioning with the characteristic of this plastic material.It is as shown in Figure 2 that this Coupling 12 is inserted in behind vertical tube 10 bottoms, pipe 20 before its upper end can be accepted, the lower end then with curve part 110 tight joint of front fork 11, make it whole smooth-going and present very complete state, and can exempt the inconvenience of

front fork

11 and 10 composite woods such as applying carbon fiber of vertical tube.

Consult Fig. 3 and shown in Figure 4, should preceding pipe 20 be to be inserted in by vertical tube 10 upper ends, and after pipe 20 is inserted in vertical tube 10 before being somebody's turn to do, should preceding pipe 20 bottoms be the planes that are resisted against Coupling 12 tops, and the external diameter on Coupling 12 tops is identical with the external diameter of preceding pipe 20, therefore pipe 20 is very smooth with the joint of Coupling 12 before, can't cause visual inharmonious.

Above-mentioned Coupling 12 removes has ease of assembly release composite in the inconvenience that stage difference place is being set, effects such as shock-absorbing buffering also can be provided, and in forming process, also can stamp icons such as the trade mark of manufacturer or literal, to reach the effect of advertising, also or the various patterns of arranging in pairs or groups to attract customer's sight.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of improved standpipe of front fork structure comprises a vertical tube, a front fork and a preceding pipe; It is characterized in that, be provided with a Coupling,

Described vertical tube is established for Coupling and preceding pipe box, and the junction of this vertical tube and front fork is a curve part, the lower end of this Coupling is corresponding shape with the curve part of front fork, Coupling top external diameter then equates with preceding pipe bottom external diameter, and Coupling central authorities are provided with a sheathed hole, and this sheathed hole is in order to being inserted in vertical tube, and are friction tight bonding state with vertical tube, this Coupling lower end engages with curve part, and fuses with preceding pipe lower end.

2, improved standpipe of front fork structure according to claim 1 is characterized in that described Coupling is to make with plastic material.