CH198298A - Bottom bracket for bicycles. - Google Patents
Bottom bracket for bicycles.Info
- Publication number
- CH198298A CH198298A CH198298DA CH198298A CH 198298 A CH198298 A CH 198298A CH 198298D A CH198298D A CH 198298DA CH 198298 A CH198298 A CH 198298A
- Authority
- CH
- Switzerland
- Prior art keywords
- ball bearings
- bottom bracket
- oil
- lines
- ball
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/003—Combination of crank axles and bearings housed in the bottom bracket
-
- 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
- B62K19/30—Frame parts shaped to receive other cycle parts or accessories
- B62K19/34—Bottom brackets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Rolling Contact Bearings (AREA)
Description
Tretlager für Fahrräder. Bei den bisherigen Tretlagern für Fahr räder ist für die beiden Kugellager :der Tret kurbelwelle ein. Öler vorgesehen, :der zwi schen den beiden Kugellagern auf die Tret kurbelwelle :ausmündet. Es muss daher ein solches Tretlager sehr ausgiebig geölt wer den, wenn :das Öl nach den beiden seitlichen Kugellagern .gelangen soll.
Die vorliegende Erfindung betrifft nun ein Fahrrad-Tretlager mit Kugellagern, bei welchem zu jedem Kugellager eine Ölerlei- tung führt, mittels welcher Leitungen das Öl den Kugellagern direkt zugeführt wird.
Bei Tretlagern mit zwei Kugellagern können :die beiden zu den Kugellagern füh renden 0lerleitungen entweder von einem ge meinsamen Öler abzweigen oder je zu einem besonderen seitlichen Oler gehören.
In der Mehnung ist eine beispielsweise Ausführungsform des Erfindungsgegenstan des dargestellt.
Fig. 1 -zeigt einen Längsschnitt durch ,das Tretlager und Fig. 2 eine Seitenansicht, teilweise im Schnitt.
In dem in der Zeichnung dargestellten Ausführungsbeispiel ist .die Tretkurbelwelle mit 1 bezeichnet, für deren Lagerung an bei den Enden :des mit 2 bezeichneten Tretlager- gehäuses zwei Kugellager 3- eingesetzt sind.
Oben im Tretlagergehäuse 2 sind nahe bei den Kugellagern 3 zwei Öler 4 eingeschraubt, deren Leitungen 5 in :den Innenraum des Tretlagergehäuses ragen, gegen :die Kugel- lager zu abgebogen sind und auf der Höhe der obern Kugellagerhälfte .dicht bei den Ku gellagern ausmünden, so -dass das zur iSchmie- rung dienende Öl :
direkt auf die Kugeln ,ge leitet wird. An der Unterseite .des T'.retlager- gehäuses 2 ist eine Öffnung -6 vorgesehen, welche zum Ablassen alten Öls, sowie zum Entfernen von Unreinigkeitendient. Diese Öffnung ist durch eine abnehmbare Schraube 7 abgeschlossen. Die beiden an den Kugellagern ausmün denden Leitungen 5 könnten auch von einem einzigen gemeinsamen Öler abzweigen,
der an .Stelle der beiden Öler 4 vorgesehen wäre.
Indem das Öl den Kugeln direkt zugelei tet wird, ist das Mitführen von Fremdkör pern hintangehalten, dazu ist. der Ölverbrauch kleiner, aber trotzdem ist die ,Schmierung in folge besserer Ölverteilung- auf alle rotieren den Kugellagerteile günstiger.
Bottom bracket for bicycles. With the previous bottom bracket bearings for bicycles, the two ball bearings are: the pedal crankshaft. Oiler provided: that between the two ball bearings on the crankshaft: opens. Such a bottom bracket must therefore be oiled very extensively if: The oil is to reach the two ball bearings on the side.
The present invention relates to a bicycle bottom bracket bearing with ball bearings, in which an oil line leads to each ball bearing, by means of which lines the oil is fed directly to the ball bearings.
In the case of bottom brackets with two ball bearings, the two oil lines leading to the ball bearings can either branch off from a common oiler or each belong to a special lateral oiler.
In the Mehnung an example embodiment of the subject invention is shown.
Fig. 1 shows a longitudinal section through the bottom bracket and Fig. 2 shows a side view, partially in section.
In the exemplary embodiment shown in the drawing, the pedal crankshaft is denoted by 1, two ball bearings 3 - are used for bearing it at the ends: of the pedal bearing housing denoted by 2.
At the top of the bottom bracket shell 2, close to the ball bearings 3, two oilers 4 are screwed, the lines 5 of which protrude into: the interior of the bottom bracket shell, against: the ball bearings are bent too and at the level of the upper ball bearing half open tightly at the ball bearings, so that the oil used for lubrication:
directly on the balls, ge is directed. An opening -6 is provided on the underside of the T'.retlager- housing 2, which is used to drain off old oil and to remove impurities. This opening is closed by a removable screw 7. The two lines 5 opening out at the ball bearings could also branch off from a single common oiler,
which would be.
The fact that the oil is fed directly to the balls prevents foreign bodies from being carried along. the oil consumption is smaller, but still the lubrication is cheaper due to better oil distribution - on all rotating ball bearing parts.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH198298T | 1937-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH198298A true CH198298A (en) | 1938-06-15 |
Family
ID=4441266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH198298D CH198298A (en) | 1937-09-01 | 1937-09-01 | Bottom bracket for bicycles. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH198298A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883368A (en) * | 1987-12-08 | 1989-11-28 | Stein James A | Grease injector for bicycle crank bearings |
-
1937
- 1937-09-01 CH CH198298D patent/CH198298A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883368A (en) * | 1987-12-08 | 1989-11-28 | Stein James A | Grease injector for bicycle crank bearings |
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