摘要:
Die Erfindung betrifft einen Fahrradrahmen (2), ausgebildet aus einem Rohrprofil, mit einem als obere Hinterradstrebe ausgebildeten ersten Rohrabschnitt (14a), einem als Oberrohr ausgebildeten zweiten Rohrabschnitt (14b), einem als Unterrohr ausgebildeten dritten Rohrabschnitt (14c) und einem als untere Hinterradstrebe ausgebildeten vierten Rohrabschnitt (14d). Erfindungsgemäß ist das Rohrprofil einteilig ausgebildet, so dass der erste Rohrabschnitt (14a) ein dem zweiten Rohrabschnitt (14b) abgewandtes erstes freies Ende (15) und der vierte Rohrabschnitt (14d) ein dem dritten Rohrabschnitt (14c) abgewandtes zweites freies Ende (16) aufweist und dass die beiden Enden (15,16) in Querrichtung des Fahrradrahmens (2) derart voneinander beabstandet sind, dass zwischen diesen ein dafür vorgesehenes Hinterrad (3) drehbar aufnehmbar ist.
摘要:
A head tube assembly suitable for use with a bicycle or similar wheeled vehicle. The head tube assembly comprises a head tube configured for adjoining to a top tube and to a down tube in a bicycle frame. The head tube includes a lower bearing component and an upper bearing component, the lower and upper bearings being configured for rotatably engaging a fork assembly. The fork assembly comprises an external steerer configured to rotate externally to the head tube. The head tube assembly includes an upper steerer section configured to secure the external steerer; and an internal chamber configured with an aperture for receiving one or more cables, and the internal chamber is coupled to the top tube or to the down tube for routing one or more cables through the interior space of the top tube or the down tube.
摘要:
Conventional linkages between bicycle handlebar-mounted controls and rear brakes and gears are unable to accommodate unlimited rotation of the handlebars as is required on some so-called “freestyle” bicycles. A prior attempt to solve the problem employs a linkage comprising a bearing having two parts that are relatively rotatable about an axis. However this proposal is unable to handle situations where there are two or more mechanisms to be controlled e.g. a rear brake and a gear. Another problem is that dirt between the bearing surfaces may cause the bearing to jam. The invention provides pins (15C) that fit into slots (8A) for restricting rotation, relative to the handlebars, of a first bearing part (15A) and pins (15F) that fit in slots (9A) for restricting rotation, relative to the bicycle frame, of a second bearing part (15B). The aforementioned slots are formed in cylindrical guide walls not visible in Fig 5. The use of the bearing (15) avoids any twisting of Bowden cables (7A, 7B) or the like such as are used on conventional linkages and, if any grit were to find its way between the two parts (15A, 15B) of the bearing, the latter are nevertheless forced to rotate relative to each other thus avoiding seizing of the bearing. The invention is not exclusively applicable to bicycles and can be used in linkages between parts of robotic machinery and other equipment.
摘要:
The present invention refers to a frame for a motorcycle with adjustable pitch that comprises two beams (11,111) connected to a steering tube (20,120) at the front end (14,114) of the frame (10,110) and is characterised in that the steering tube (20,120,220) is located in a box-shaped body (18,118,218) fixedly connected to the beams (11,111,211) through locking means (17,117) that act in the longitudinal direction with respect to the main direction of extension of the frame (10,110).