CN2806294Y

CN2806294Y - Fix sleeve for single shaft crank of bicycle

Info

Publication number: CN2806294Y
Application number: CN 200520113378
Authority: CN
Inventors: 董启风
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-13
Filing date: 2005-07-13
Publication date: 2006-08-16
Anticipated expiration: 2015-07-13

Abstract

The utility model relates to a fixed sleeve barrel for a single shaft crank of a bicycle. The utility model is fixedly welded on the main body of a bicycle frame. The utility model comprises a hub pipe sleeve, two pipe sleeve sheaf rings, two skidding slabs and a cushion ring group, wherein the hub pipe sleeve is an arc groove whose both end edges are provided circular arc gaps. The two pipe sleeve sheaf rings are supported and installed on the end edges of the hub pipe sleeve, and a projecting slab which is convex and is used for being sheathed with the arc groove of the hub pipe sleeve is arranged on the circumference of an external connection labial surface. The two skidding slabs are pipe slide blocks which are in a half-smooth circular arc shape and are slightly convex labial edges. The connection sleeves of the skidding slabs penetrate into hollow pipe diameter sheaves in the pipe sleeve sheaf rings and are fixed. The cushion ring group is composed of a protective cushion ring and an elastic cushion ring with two different sizes, and is positioned by a bolt sleeve and a stagnant sleeve. The utility model has the effect of fluted discs propping up and squeezing and concentric and steady running.

Description

Bicycle single shaft crank fixed muffle

Technical field

The utility model relates to a kind of bicycle single shaft crank fixed muffle.

Background technology

With the bicycle single shaft crank fixed muffle of being displayed and sold in the existing market, its structure as shown in Figure 1:

Its base apical margin at single shaft crank 3 is nested with a chain fluted disc 4, is equipped with ridge 31 by its crank caliber appropriate location, and locking bolt hold-doun nut 21 is made its positioning combination; And this hold-doun nut 21 and having is slip pipe circle 211 outside the ring arc edge, make and put ear with dress string one ball bearing of main shaft 22 and paste and touch, and one by one enclosing cover propeller boss circle 23, fixed sleeving 24 and etc. propeller boss circle 25, the ball bearing of main shaft 26 that splits is nested with the bolt-lock ridge 32 of end in addition with hold-doun nut 27, formation is ordered about the commentaries on classics that is able to concentric axis and is revolved motion; Being set as only caulking groove 321 and only buckle packing ring 28 and to compel bolt nut 29 locking and form the effect of gripping of forcing in pairs, its this above element makes locating bush and holds, and is combined into the fixed muffle structure that a complete single shaft crank is located transmission wherein and on the mat ridge 32; So shown with the analysis of Fig. 2: the pipe circle 211,271 of this hold-

doun nut

21,27 is to be to make ring arc edge to touch transfer movement in order to do pasting for ball bearing of main shaft, sewing up also of this fixed sleeving 24 and

propeller boss circle

23,25 can't be measured the body concentric axis, causing can't be for ball bearing of main shaft quite stable ground cover is held applying, and there is the assembling of directional conditions to implement, be to cause single shaft crank 3 usually to produce to rock the anti-eccentric shaft that is of balance staff shifting movement to put tilting transfer, be that the abrasion that cause ball bearing of main shaft can not bear deflection like this are worn, the normal sense of operator is trampled and is difficult for implementing.And it is complicated that the formation of numerous elements like this also is increased in fit on, and it is difficult that formation connects weldering.

Gu and feel the difficulty and the complexity of above fixed muffle enforcement of stating deeply, it is the emphasis of doing one's utmost in analysis research improvement, and its creator of mat technical experience gained for many years, develop the evolutionary approach of this structure finally, advance and propose in accordance with the law the application of utility model patent.

Summary of the invention

The purpose of this utility model provides a kind ofly to be had a concentric shafts movement and changes and surely to hold locating effect, simplifies the bicycle single shaft crank fixed muffle that element is made.

For achieving the above object, the utility model is taked following design plan: a kind of bicycle single shaft crank fixed muffle, mainly be by the fixed muffle that fixedly is welded in main body of vehicle frame: it is characterized in that: it comprises: a propeller boss pipe box lies in the arc groove that two ora terminalis places offer arc gap; Two pipe box bundle circles are that bearing is installed in propeller boss pipe box ora terminalis, include the hollow caliber that the skid sheet embeds in order to do using tube bank, and the tab in order to the arc groove that is nested with the propeller boss pipe box of a projection is arranged in external labial surface periphery; Two skid sheets are to be half level and smooth circular-arc pipe slide block by one group, are with a little prominent antelabium, and it connects cover and penetrates the interior hollow caliber bundle of pipe box bundle circle and hold fixing; One washer sets, it is formed by two kinds of pad rings not of uniform size and spring washer, stagnates in order to do its bolt cover and overlaps the location.

In this pipe box bundle circle internal diameter and be shaped on recessed edge circle circle, be nested with one group of little prominent pipe slide block and put, locate in order to do its bolt cover cover that stagnates.

The utility model has the advantages that: 1, the utility model bicycle single shaft crank fixed muffle, because connecting, single shaft crank and fluted disc put in the fixed muffle of pipe support, device has propeller boss pipe box and the squeezing of two pipe flange skid sheets thereof to put pipe box bundle circle inner connecting tube, and flexible packing ring, pad ring installing, constitute the driving center sleeve of a lift-over start, fixedly push against by a latch, change the effect of surely holding the location, promote and simplify the purpose that element is made in order to do making fixed muffle have a concentric shafts movement.2, the utility model bicycle single shaft crank fixed muffle, wherein, skid sheet system is made of the circular-arc pipe slide block of two halves, use have the support pipe support reach the bearing function etc. the matter benefit.

Description of drawings

Fig. 1 is the exploded drawings of habit formula structure

Fig. 2 is the profile analysis figure of habit formula textural association

Fig. 3 is the element exploded view of this creation structure

Fig. 4 is the combination section of this creation structure

The specific embodiment

As shown in Figure 3, the utility model bicycle single shaft crank fixed muffle mainly is at by fixedly being welded in the main body of vehicle frame phase surely to hold the fixed muffle of concentric rotation: wherein

One propeller boss pipe box 11 is to make to be formed in the arc groove 111 that edge place, two ends offers circular arc short slot shape, makes in covering single shaft crank 3 pipe supports and must curve the smooth and easy facility of the cross-under that is nested with;

Two pipe

box bundle circles

12,14, be to take up to be placed on 11 liang of ora terminalis of propeller boss pipe box, and the hollow caliber that connects the embedding of skid sheet in the tube bank connects the cover bundle, in external labial surface outer peripheral edges and a tab that is convexly equipped with 121 arranged, 141, be convenient to be nested with the arc groove 111 of propeller boss pipe box 11, and this bundle circle internal diameter there is a recessed

edge circle circle

122 and 142 in addition;

Two

skid sheets

13,15 are to be half level and smooth circular-arc pipe slide block 131,151 by one group, and have a little prominent antelabium 131 ' and 151 ' to form, and make it connect cover respectively and penetrate in the pipe

box bundle circle

12,14 hollow caliber bundles and hold fixing;

One washer sets, its by two pad rings 16 not of uniform size and 18 and spring washer 17 constituted its bolt cover cover location that stagnates;

Make it connect cover by preface according to Fig. 4, constitute a kind of behind propeller boss pipe box 11 solid welding main body of vehicle frame, by pipe box bundle circle 12, the skid sheet 13 that connects in 14,15 make subsides touches single shaft crank 3, the motion effect is revolved in the commentaries on classics that forms support fixation, and

pipe slide block

13,15 little prominent antelabium 131 ', 151 ' also encapsulation put and be embedded in pipe

box bundle circle

12,14 recessed

edge circle circle

122 and 142 forms the clipping effect that only gets loose, one latch 19 is worn the perforation 31 of passing through in crank 3 pipe supports, with retaining system spring washer 17 and

pad ring

16,18 are close to and push against the cover bolt, move in order to do the concentric shafts that makes that single shaft crank 3 and propeller boss pipe box 11 are surely held smoothly, the unlikely drive that is subjected to fluted disc is led and is got rid of movement because of the slack and undisciplined off-centre of skid sheet and change, and the support of reaching quite stable is pop-jump.

To sum up institute is old, and this case bicycle single shaft crank fixed muffle is to practise formula person in structural constituent than tool more to simplify the coaxial stable support of dark tool, and promotes this making improved effect, and then reaches the utilization of substantial function.

Claims

1, a kind of bicycle single shaft crank fixed muffle, mainly be by the fixed muffle that fixedly is welded in main body of vehicle frame: it is characterized in that: it comprises:

One propeller boss pipe box lies in the arc groove that two ora terminalis places offer arc gap;

Two pipe box bundle circles are that bearing is installed in propeller boss pipe box ora terminalis, include the hollow caliber that the skid sheet embeds in order to do using tube bank, and the tab in order to the arc groove that is nested with the propeller boss pipe box of a projection is arranged in external labial surface periphery;

Two skid sheets are to be half level and smooth circular-arc pipe slide block by one group, are with a little prominent antelabium, and it connects cover and penetrates the interior hollow caliber bundle of pipe box bundle circle and hold fixing;

One washer sets, it is formed by two kinds of pad rings not of uniform size and spring washer, stagnates in order to do its bolt cover and overlaps the location.

2, bicycle single shaft crank fixed muffle as claimed in claim 1 is characterized in that: in this pipe box bundle circle internal diameter and be shaped on recessed edge circle circle, be nested with one group of little prominent pipe slide block and put.