CN2212521Y - Bearing assembly for bottom bracket bearing of bicycle - Google Patents
Bearing assembly for bottom bracket bearing of bicycle Download PDFInfo
- Publication number
- CN2212521Y CN2212521Y CN 94235701 CN94235701U CN2212521Y CN 2212521 Y CN2212521 Y CN 2212521Y CN 94235701 CN94235701 CN 94235701 CN 94235701 U CN94235701 U CN 94235701U CN 2212521 Y CN2212521 Y CN 2212521Y
- Authority
- CN
- China
- Prior art keywords
- bicycle
- bearing assembly
- assembly
- bearing
- middle axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a bearing assembly of a middle axle of a bicycle, which belongs to a bicycle assembly. The bearing assembly of a middle axle of a bicycle adopts an integral type bearing structure, which means that a middle axle roller of an outer ring is directly processed with the form of double column channels. The outer ring, the middle axle roller, a steel ball, a rubber sealing ring, a frame, a keeping frame, a retainer ring, etc. are combined to a whole. The utility model has the advantages of simple assembly, convenient operation, high machining accuracy, small riding resistance, long service life, convenient processing and manufacture, etc., and does not need to be maintained. The bearing assembly of a middle axle of a bicycle is a novel assembly for replacing old bicycle industry products.
Description
Bicycle middle shaft bearing assembly of the present utility model is a kind of existing bicycle middle shaft bearing to be carried out improved new bicycle axis accessory.
At present the domestic bicycle middle shaft that is using mainly is made up of axis rod, bearing (about each cover) and latching device.Though this structure has been used for many years, but there is shortcomings such as number of parts is many, assembling complexity and expense height, working accuracy is poor, rotational resistance is big, bearing space is by manually adjusting, so assembly precision is poor, reliability is not high, service life is low, lacks sealing arrangement simultaneously, and the user uses inconvenience.To this, be starved of existing bicycle middle shaft is carried out structural improvement, to adapt to bicycle designs and to make the needs of bringing in constant renewal in.
The purpose of this utility model is to avoid the defective and the weak point that exist in the above-mentioned prior art, design and produce out a kind of convenient, safe and reliable new bicycle Middle shaft assembly of simple, rational in infrastructure, processing and fabricating that assembles, to satisfy the demand of bicycle industrial boom.
In order to achieve the above object, the utility model has adopted a kind of integrated shaft bearing structure of being made up of outer ring, axis rod, steel ball, rubber seal, skeleton, retainer, back-up ring and adapter sleeve.The characteristics of this structure mainly are the patterns that directly processes the biserial raceway groove on outer ring and axis rod.Accompanying drawing shows the normal cross section scheme drawing of the bicycle middle shaft bearing assembly of this utility model.As shown in the figure, outer ring (1) is whole oval tubular, is processed with twice outer fissure and two seal grooves on the internal diameter of two ends, and raceway groove rolls for steel ball (2), and seal groove is used for rubber seal (3) is installed.The middle part of axis rod (4) is processed with two raceway grooves, rolls for steel ball.Use for left and right sides crank is installed on the plane that two ends mill out.Steel frame (5) support is arranged in the rubber seal (3), embed in the seal groove on the outer ring.Respectively there is row's steel ball (2) steel ball to be separated between the row of two on outer ring and axis raceway groove with plastic cage (6).The seal ring outside respectively has a steel back-up ring (7) to constitute labyrinth seal structure with seal ring, plays protection and leak free effect.The bearing that above each unit construction is become is pressed in the adapter sleeve (8) of a side, puts into center tap, refills the opposite side adapter sleeve, tightens adapter sleeve and gets final product.
In design, stressed even for guaranteeing, the interval of two raceway grooves can be big as far as possible under the situation that structure allows.Two raceway groove spacing distances on outer ring two raceway grooves and the axis rod are different, so that steel ball becomes angular contact with raceway groove, but bearing radial force not only also can bear axial force, has reduced end float misalignment, has improved kinematic accuracy.Adopt plastic cage to be separated by between steel ball and the steel ball, improved the rotating speed and the life-span of bearing, reduced noise jamming.Give being filled with grease in the bearing, under the protection of both sides rubber seal, can prevent the intrusion of leak-stopping fat and dust.Gapped between seal ring epipharynx and axis rod, to reduce friction drag.There is back-up ring in the seal ring outside, can prevent to block bearing in the collision lower seal distortion of external force, constitutes labyrinth seal structure with seal ring again, guarantees not to be subjected to contamination by dust.Guaranteed the endplay of bearing with design means and job operation, and it is whole to need not to do anyone wage adjustment.For guaranteeing and the exchange of existing assembling fittings that adapter sleeve has been designed in both sides, internal diameter and inner end surface fasten bearing, have fine thread to match with center tap on the external diameter.
Bicycle middle shaft bearing assembly of the present utility model is compared with existing bicycle middle shaft bearing, has following advantage:
1, adopted one-piece construction, made assembling simple, erected cost is low.
2, the reliability height is easy to use, without any need for maintenance, and long service life.
3, working accuracy height, riding resistance is little, and is simple for production, practical, has very big exploitation practical value.
Claims (3)
1, a kind of integral type bottom bracket bearing assembly of being made up of outer ring, axis rod, steel ball, rubber seal, skeleton, retainer, back-up ring and adapter sleeve is characterized in that directly processing the pattern of biserial raceway groove on outer ring and axis rod.
2, bottom bracket bearing assembly according to claim 1 is characterized in that the rubber seal and the outside steel back-up ring of inboard formed labyrinth seal structure jointly.
3, bottom bracket bearing assembly according to claim 1 is characterized in that with adapter sleeve bearing assembly being connected on the center tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235701 CN2212521Y (en) | 1994-10-28 | 1994-10-28 | Bearing assembly for bottom bracket bearing of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235701 CN2212521Y (en) | 1994-10-28 | 1994-10-28 | Bearing assembly for bottom bracket bearing of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212521Y true CN2212521Y (en) | 1995-11-15 |
Family
ID=33843895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94235701 Expired - Fee Related CN2212521Y (en) | 1994-10-28 | 1994-10-28 | Bearing assembly for bottom bracket bearing of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212521Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160289A (en) * | 2016-03-07 | 2017-09-15 | 马勒国际有限公司 | Method for manufacturing bearing assembly |
-
1994
- 1994-10-28 CN CN 94235701 patent/CN2212521Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160289A (en) * | 2016-03-07 | 2017-09-15 | 马勒国际有限公司 | Method for manufacturing bearing assembly |
| CN107160289B (en) * | 2016-03-07 | 2020-04-03 | 马勒国际有限公司 | Method for manufacturing a bearing assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |