DE1952713U - BICYCLE BOTTOM BRACKET. - Google Patents

Description

RA. 567 081 * 29,166 _ή

4. ._.- _MSS5

Paul H a 1 1 e r ι Aarauerstrasse 602, R e i η a c h / AG

Bicycle bottom bracket

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The invention looks at a bicycle Tretlagep ₅ whose axis is practicing? Rolling bearings consisting of an inner and an outer race and rolling elements in between are mounted in a bushing "which can be installed and removed together with the axle and the bearings in and out of the bottom bracket housing of the bicycle frame.

In known bottom bracket bearings of this type, ring disks are screwed onto or into the bushing in the area of their ends Washer; fold the axis together with the bearings and the other disks in the liner "After the insertion of the sleeve into the bottom bracket ö © s bicycle frame has a housing _ß the sleeve and the Dietanshtilee for the outer races penetrating screw can be sucked» * whose tapered head in an expanding ring I ¹ At ₉ which then secures the bushing in the expanded state against twisting in the Tysetlagergehäuses. This bearing is quite complex in its construction and can only be siasaiamsnset with a lot of work. Furthermore, it is not easy to install and remove from the bottom bracket housing by inexperienced people.

The invention is based on the task _{9 of} creating a bottom bracket with an axle mounted on roller bearings in © ia @ F Büelss © ₉ that

ϊά simply®? Put them together in a way that can be installed and removed from the bottom bracket housing of a bicycle frame even by inexperienced people.

According to the invention, this object is achieved in that the sleeve is closed on one side except for the hole for the passage of the axle and is provided on the outside with a conical surface, that the sleeve is on the other side by a detachable hole for the passage of the axle The cover can be closed9 which is also provided with a conical surface in such a way that when installed in the bottom bracket housing, the sail surfaces of the bushing and cover center the bushing in the housing »and that the cover is designed _{9 so} that it holds the bushing in the housing the sleeve is firmly closed on one side and provided with a detachable cover on the other side _c the inventive bottom bracket can be put together without difficulty and effort and in a simpler and safer way to install and expand the frame as a whole Installation and removal of the storage unit does not require any special requirements and is possible for both new and old bicycles and motor-driven bicycles.

Some embodiments of the invention are as follows B @ sete © lbi®g explained on the basis of the drawing. Show it :

Fig el Sm section of an "in" and expandable unit of the

Unit partly as viewed ₉ partly on average,

eat

3 in section a part of another embodiment of a unit that can be installed and removed "

4 shows a further embodiment of the invention in section.

According to FIG. 1, a bottom bracket axle 1 is mounted on "wel roller bearings 2, for example needle bearings" in a bush 3. The bush 3 is closed on one side by a wall 4 which has only one opening for the axis 1 to pass through. The outside diameter of the wall A is slightly larger than the outside diameter of the socket 3, and the wall goes with a conical flange 5 into the dumbbell surface ύ®τ bush 3 * At the other end of the bush 3 , it is provided with an external thread 6 that a cover 1 that closes the can on this side is screwed on. The lid

7 has a © spherical surface 5 ° .

The outer rings of the two roller bearings 2 can be fastened in the sleeve 3 with a special adhesive. The middle section

8 of the axis ti is thicker than the adjacent sections on which the inner rings of the roller bearings 2 are located and is surrounded by a Dletansbüchse 9 ,, On the side of the sleeve 3 ₉ on which the cover "? ABfgoaetoaiabt is _s _is inside the bushing a groove 10 vopg®seli © a _s ia which a circlip 11 is embedded _s which secures the roller bearings 2 wan the Aelis © 1 against shifting in the axial direction _b

Zia Eiatiaüi ^ a of the axle in the bottom bracket housing only the deekcel 1 mm of the = bush © 3 is unscrewed and the bushing together with the roller bearings 2 and "3 @ y axis 1 in the housing 12 of the bicycle" frame and then inserted ά®τ Deekel V back onto the bush 3

screws. Thanks to the tapered surfaces 5 and 5% which oppose each other Create corresponding conical surfaces in the housing 13 »will be the bushing 3 automatically centered when the cover 7 is tightened and in the housing “The cranks are then to be attached to the two ends of axle 1 in a known manner. axis 1 with regard to play and good running ability is therefore omitted «, Dismantling is just as easy in reverse as installing * The bottom bracket can also be used by untrained people install and remove without difficulty »

The unit according to the invention can also be installed without difficulty in bicycle frames that were previously equipped with conventional bearings. Only the two end faces of the fretlaiger housing have to be provided with the surfaces 5 and 5 ⁹ corresponding Eegel surfaces "which is relatively easy to carry out""· =

While in the embodiment of Figure 1, the roller bearings within the »bush. 3 arranged: are »can the. Findings according to the unit: also realize in the form) that the roller bearings are outside. at the end faces of the sleeve 3 bef inden _s. like this tn. Fig a 3 is shown. In this example, the bush 3 is extended beyond the conical surface 5 ' in the axial direction and forms a _{-H 3 ö} in which the roller bearing 2 is housed * laeh from sen roller bearing 2 covered by a disk 14 wad with a. Seeger ring 11 & Gegeia axial displacement secured. «In sijmg <smäss

Weis. ©, is there my lid in there? with a cylinder 1.3; he _see in that the awelts roller bearing

The Etetewea and the dismantling of the axle take place in the same way as in the example according to Fig.t, in that the cover 7 is unscrewed and the sleeve 3 together with the axle 1 and the roller bearing 2 is pushed into the bottom bracket housing when screwing on the cover 7 the bush 3 is then centered in the housing and at the same time the roller bearing attached to the cover 7 is pushed onto the axle 1 "Then the cranks must be fastened again in a known manner"

The Ausfühfungsbeispiel according to Figure 3 may be modified in the manner s @ _s in that the disk 114 formed as a screw cap ists 15 wherein the dam Seeger ring entfällte

Bsi has the Ausführungsheispiel according 4 shows the axis © 1 in their "middle section 8 ° same diameter as in their dl © Wael & lagei ⁵ 2 bearing sections · The distancing of both Lsgei? happens through two circlips ^ 9% ^{which are attached in the} grooves of the ilehs © »In addition, three steel disks 16 are _{in front - = g @ s © h © E g} oil © prevent the penetration of dirt into the bearings. On ü © w iiehs © 1 is outside on the side closed by the wall 4 fi © 3? Büehse 3 a thin lid 17 pressed on, which also prevents the Eiiafclagtga van Schmitz. The cover used to close the box 3 (is designed in the same way as? Deekel 7 in Fig. H ηηύ 2 _S wssiiaifo ®v is not shown again ”.

Of? D © etel 7 mA oils Büehs © 3 can a instead of through? @I ^e schrau- h & m. ®M®h $ us? Gh öiae && ä®T® Ibekaimte connections possible united w ^ fäöSs SoB ₀ ijnideii di © bothQ parts like a @ s bayonet »

Claims (1)

RA.56708W9.10.66 1 * Fahrradteetlageve whose axis is mounted in a bushing via two »each consisting of an inner UQd © isaem- aussei · ®» race and intervening rolling elements »the inner bearing with the axle and the bearings is in or» out of the bottom bracket housing of the bicycle frame a «, and can be removed, by | @ k @ miz © ichnet {that the socket is closed on one side except for the hole for the passage of the axle and on the outside it is provided with a spherical surface» that the socket is on the an * the side of which can be closed by a detachable cover with a hole for the axis to pass through, which is also provided with a K @ g @ l surface in such a way that the conical surfaces of Bushing and cover center the bushing in the housing "and that the cover is designed in such a way that it holds the bushing in the housing" according to claim t, characterized in ₉ that ά® $ Däctel is designed as a cover to be screwed onto the sleeve » 3β Tyetlag »according to claim Hj characterized ₅ that VJSlslager In ö © s? Biichs © lüEtergebraeht are « 4 ο Trstlager aach Änspyiuiöh H _s thereby kAiinseichnetg that ö @ ek @ lfr © i @ Saä © ü®r can and the lid on his S @ it © je © inen cylindrical hohiea j © © iaes rolling bearing. 5. Bottom bracket according to spoke 1 »characterized in that ·« the end faces of the bottom bracket housing form the conical surfaces of the liner and cover corresponding conical surfaces *