DE950622C - Cast bicycle frame made of light metal - Google Patents
Cast bicycle frame made of light metalInfo
- Publication number
- DE950622C DE950622C DEK20255A DEK0020255A DE950622C DE 950622 C DE950622 C DE 950622C DE K20255 A DEK20255 A DE K20255A DE K0020255 A DEK0020255 A DE K0020255A DE 950622 C DE950622 C DE 950622C
- Authority
- DE
- Germany
- Prior art keywords
- cast
- bicycle frame
- light metal
- frame made
- legs
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
- B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Description
Durch das Patent 922 ggo ist ein aus einem Stück gegossener Leichtmetall-Fahrradrahmen unter Schutz gestellt, bei dem das hintere Ende des als hohler Flachkörper ausgebildeten Hauptsahmenträgers vorzugsweise durch das Schutzblech des Hinterrades abgedeckt und einer der sich an den Hauptrahmenträger anschließenden Schenkel der Hinterradgabel mit einem Kettenschutz versehen ist.The patent 922 ggo is a light alloy bicycle frame cast from one piece placed under protection, in which the rear end of the designed as a hollow flat body Main frame carrier preferably covered by the rear wheel mudguard and one of the legs of the rear fork that adjoin the main frame support is provided with a chain guard.
Die Erfindung betrifft eine Weiterentwicklung des-Gegenstandes des Patents, und zwar iaa Sinne einer Vereinfachung des Rahmengußkörpers und einer Vergrößerung des Schutzes des Kettenantriebs.rades. Die Erfindung besteht darin, daß der untere Rahmenteil in Höhe der Tretkurbelwelle einen Querschnitt umgekehrter U-Form aufweist und die Augen für die Tretkurbellagerung an den Schenkeln des das Kettenantriebsrad umfassenden unteren Rahmenteils angegossen sind.The invention relates to a further development of the object of Patent, in general in the sense of a simplification of the frame cast body and an enlargement the protection of the chain drive wheel. The invention consists in that the lower Frame part at the level of the crankshaft has a cross section of an inverted U-shape and the eyes for the crank bearings on the legs of the chain drive wheel comprehensive lower frame part are cast.
In den Fig. i bis 4 ist ein Ausführungsbeispiel des Erfindungsgedankens veranschaulicht.In Figs. I to 4 is an embodiment of the inventive concept illustrated.
Fig. i zeigt einen Fahrradrahmen in Seitenansicht; Fng.2 veranschaulicht einen Schnitt nach der Linie A-B der Fig. i durch den Sattelstützkörper und Fig. 3 eine perspektivische Ansicht des gesamten Fahrradrahmens.Fig. I shows a bicycle frame in side view; Fig. 2 illustrates a section along the line A-B of Fig. i through the seat post body and Fig. 3 is a perspective view of the entire bicycle frame.
In Fig. 4 ist ein Schnitt nach der Linie C-D der Fig.3 durch das Tretkurbellager des Kettenantriebsrades und den dieses schützenden Rahmenteil dargestellt.In Fig. 4 is a section along the line C-D of Fig.3 through the pedal crank bearing of the chain drive wheel and the frame part protecting it.
Mit z ist der als hohler Flachkörper ausgebildete Hauptrahmenträger, mit 2 der Lenkkopf des Fahrrades und mit 3 die das Sattelstützrohr ersetzende Tasche bezeichnet, die durch einen Deckel 3' abgeschlossen werden kann. An der vorderen Schmalseite der Tasche 3 ist die Sattelstütze 4 mit dem Sattel 5 angebracht und auf der Rückseite der Tasche 3 der Gepäckträger 9 befestigt. An die Schenkel 6 für die Lagerung des Hinterrades 7 schließen sich nach vorn die Schenkel ri für die Trebkurbellagerung an. An den Schenkeln ii sind die Augen io für die Lagerung der Tretkurbelwelle 12 angegossen, die in Kugellagern 13 läuft. Auf der Welle 12 ist das Kettenantriebsrad 14 festgekeilt. Mit 15 sind die Tretkurbeln bezeichnet.With z is the main frame support designed as a hollow flat body, with 2 the steering head of the bicycle and with 3 the bag replacing the seat post referred to, which can be closed by a lid 3 '. At the front On the narrow side of the pocket 3, the seat post 4 is attached to the saddle 5 and attached to the rear of the bag 3 of the luggage rack 9. To the legs 6 for the storage of the rear wheel 7 close forward the legs ri for the Treb crank bearing on. On the legs ii are the eyes io for the storage of the Cast on pedal crankshaft 12, which runs in ball bearings 13. On shaft 12 is the chain drive wheel 14 is wedged. With 15 the cranks are designated.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK20255A DE950622C (en) | 1953-11-22 | 1953-11-22 | Cast bicycle frame made of light metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK20255A DE950622C (en) | 1953-11-22 | 1953-11-22 | Cast bicycle frame made of light metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE950622C true DE950622C (en) | 1956-10-11 |
Family
ID=7215859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK20255A Expired DE950622C (en) | 1953-11-22 | 1953-11-22 | Cast bicycle frame made of light metal |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE950622C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3804342A1 (en) * | 1988-02-12 | 1989-08-24 | Klaue Hermann | Bicycle produced from die-cast light metal or injection-moulded thermoplastic |
| US5273303A (en) * | 1992-10-15 | 1993-12-28 | Structural Polymer (Holdings) Ltd. | W-shaped composite bicycle frame |
-
1953
- 1953-11-22 DE DEK20255A patent/DE950622C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3804342A1 (en) * | 1988-02-12 | 1989-08-24 | Klaue Hermann | Bicycle produced from die-cast light metal or injection-moulded thermoplastic |
| US5273303A (en) * | 1992-10-15 | 1993-12-28 | Structural Polymer (Holdings) Ltd. | W-shaped composite bicycle frame |
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