CN2137637Y

CN2137637Y - Device for fixing fork column and front fork blades of bicycle

Info

Publication number: CN2137637Y
Application number: CN 92232018
Authority: CN
Inventors: 黄焕扬
Original assignee: Shenxie Metal Processing Co ltd
Current assignee: Shenxie Metal Processing Co ltd
Priority date: 1992-09-04
Filing date: 1992-09-04
Publication date: 1993-07-07
Anticipated expiration: 2002-09-04

Abstract

The utility model relates to a device for fixing vertical pipes of front forks and shoulder seats for bicycles, comprising the vertical pipe of a front fork and a shoulder seat, wherein, semicircle grooves are arranged on the periphery of one end of the vertical pipe axially; semicircle grooves with the same number are also arranged on the corresponding position of the shoulder seat. Fixed pins are inlaid into round groove holes which are formed by the semicircle grooves of the vertical pipe and the semicircle grooves of the shoulder seat to pressurize and rivet the vertical pipe and the shoulder seat. So the vertical pipe and the shoulder seat are impossible to rotate axially under exogenic action. In addition, a phenomenon of axial linear displacement does not happen. So both parties are combined into integration completely so as to enhance use safety.

Description

Device for fixing fork column and front fork blades of bicycle

The utility model is meant a kind of bicycle front fork standpipe and the anchor fitting of takeing on seat especially relevant for a kind of front fork of bicycle.

Commonly use the standpipe 11 of Regular Bicycle front fork 1 and combining of shoulder seat 12, as shown in Figure 1, be on shoulder seat 12, to offer three holes 121 side by side, 122, wherein be positioned at of the installing of the hole 121 of central authorities for this standpipe 11, this hole 122 that is positioned at both sides then confession sets firmly the usefulness of fork pin 13, and this three hole 121, more cut a straight finedraw 123 between 122 open and made it continuous, so for making installing go into this hole 121, standpipe 11 in 122 is all maintained static with fork pin 13, then must on this shoulder seat 12, offer some in addition perpendicular to this hole 121,122 fixing threaded hole 124, and utilize bolt 14 to screw in this fixing threaded hole 124, be seamless state from these straight finedraw 123 compressings being made to engage, this hole 121 so, 122 diameters promptly can shrink and diminish, thereby this standpipe 11 and fork pin 13 etc. is all tightened, make it proper and these shoulder seat 12 formation one, as if this commonly uses standpipe 11 and the rather firm practicality of combining of shoulder seat 12 at first blush, in fact but be far from it, wherein still have critical defect extremely to be solved, promptly this commonly uses a standpipe 11 and shoulder 12 combines because the only locking packing of Drawing upon bolt 14, there is no the mating reaction of other external factors, therefore in case be subjected to the long-term collision of external force, shock effect, be easy to promptly can cause the loosening phenomenon of this lock bolt 14, this standpipe 11 also can be followed with shoulder seat 12 and produces loosening situation as a result, or axial straight-line displacement campaign takes place, or axial swing offset takes place, severe patient more will cause detached from each other the coming off can not running condition, and all this kind is entail dangers to user's life security all; Remove this this commonly use combining of standpipe 11 and shoulder seat 12 owing to must offer fixing threaded hole 124 and must be used bolt 14, so promptly can increase manufacturing cost virtually, can't reach save time, saving of labor's purpose.

Primary and foremost purpose of the present utility model, be to provide the anchor fitting of a kind of bicycle front fork standpipe with the shoulder seat, it utilizes the simplest combination, standpipe is combined with the shoulder seat, when being subjected to the various masterpiece time spent, can not produce axial straight-line displacement campaign and axially rotatablely move, this standpipe and shoulder seat are connected as a single entity each other, the worry of non-loosening, disengaging is to guarantee user's life security.

An of the present utility model purpose promptly is to provide the anchor fitting of a kind of bicycle front fork standpipe with the shoulder seat, owing to wherein need not offer any screw or use any bolt, therefore helps to simplify production stage, reduces manufacturing cost.Thereby can obtain save time, saving of labor's actual effect.

The purpose of this utility model reaches as follows:

A kind of bicycle front fork standpipe and the anchor fitting of takeing on seat, the standpipe and shoulder seat that comprise front fork, it is characterized in that: an end peripheral region of this standpipe offers some semicircle grooves vertically, and the relative correspondence position at this shoulder seat also offers the semicircle groove of similar number, in the common circular slotted eye that forms of this standpipe semicircle groove and this shoulder seat semicircle groove institute, be embedded with set pin, described standpipe and shoulder seat riveted outside described set pin.

The purpose of this utility model can also following mode reach: wherein the set semicircle groove of the set semicircle groove of this standpipe and this shoulder seat respectively has 2 and it is at a distance of 180 degree.

Graphic detailed description

The schematic appearance that standpipe combines with the shoulder seat is commonly used by Fig. 1 system.

Fig. 2 is the longitudinal profile exploded drawings of a kind of preferred embodiment of the utility model.

Fig. 3 fastens and states embodiment manual manipulation riveting status of processes scheme drawing.

Fig. 4 is the longitudinal profile assembly drawing of Fig. 2.

Fig. 5 fastens and states the upward view that embodiment shows its neutral tube.

Fig. 6 fastens and states the wherein upward view of shoulder seat of embodiment demonstration.

Please cooperate and consult shown in each figure, a kind of bicycle front fork standpipe provided by the utility model and the anchor fitting of takeing on seat comprise a standpipe 2, a shoulder seat 3 and plurality of fixed pin 4 etc.; Wherein:

This standpipe 2, shown in Fig. 2,4,5, basically structure is same as the prior art substantially, so give unnecessary details in detail in this same section is then no longer many, as for difference from prior art, mainly be its lower end peripheral region vertically the spy to offer in some semicircle groove 21(present embodiments be to lift to be manufactured with two and to be example, this two semicircle groove is each other at a distance of 180 degree);

This shoulder seat 3, shown in Fig. 2,3,4,6, when making, be one-body molded three

accommodation holes

31,32 that have on it, wherein this accommodation hole 32 that is arranged in central authorities is to lift to be manufactured with two and to be example at the semicircle groove 311(present embodiment that position that should standpipe 2 set semicircle grooves 21 is also offered similar number, and this two semicircle groove is each other at a distance of 180 degree);

Set pin 4, be made in the present embodiment cylindric, for being embedded in the circular slotted eyes of this standpipe 2

semicircle grooves

21 and 311 common formation of this shoulder seat 3 semicircle grooves;

In addition, standpipe 2 and shoulder seat 3 be riveted mutually in set pin 4 outsides, and its riveting method can utilize a riveted joint 5 with the rotation pressuring method to be turned up in these standpipe 2 lower ends shown in Fig. 3,4, impels it to link with shoulder seat 3 riveteds and is one;

The utlity model has following advantage: standpipe 2 and shoulder seat 3 are under the restriction of each steady pin 4, even be subjected to also shaftless possibility to swing offset of External Force Acting, and under the restriction of riveted joint, also can not produce the axial direct displacement of the lines, so both are combined as a whole fully, situation loosening, that separate will not exist, and the user does not naturally also have the worry of life security certainly.

Claims

1, a kind of bicycle front fork standpipe and the anchor fitting of takeing on seat, the standpipe and shoulder seat that comprise front fork, it is characterized in that: an end peripheral region of this standpipe offers some semicircle grooves vertically, and the relative correspondence position at this shoulder seat also offers the semicircle groove of similar number, in the common circular slotted eye that forms of this standpipe semicircle groove and this shoulder seat semicircle groove institute, be embedded with set pin, described standpipe and shoulder seat riveted outside described set pin.

2, according to the anchor fitting of the described bicycle front fork standpipe of claim 1 with shoulder seat, it is characterized in that: wherein the set semicircle groove of the set semicircle groove of this standpipe and this shoulder seat respectively has 2 and its 180 to spend apart.