CN2432063Y

CN2432063Y - Central axis device for bicycle

Info

Publication number: CN2432063Y
Application number: CN 00220891
Authority: CN
Inventors: 苏继栓
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-28
Filing date: 2000-06-28
Publication date: 2001-05-30
Anticipated expiration: 2010-06-28

Abstract

The utility model relates to a central axis device for a bicycle, which comprises a supporting seat. The utility model is characterized in that the external surface of the supporting seat is connected with a front oblique beam, and the right side of the front oblique beam is provided with a supporting rod; inner rings of the supporting seat are connected with two bearings; both sides of the supporting seat are respectively provided with a fork seat, the middle part of each fork seat is provided with a concave slot, and the external surfaces of the fork seats are respectively provided with a rear fork; the inner rings are connected with the bearings, and the external sides of the inner rings are respectively provided with a round table; a distance sleeve is arranged in the middle of the supporting seat and a fork seat; both sides of each fork seat are respectively connected with a retaining ring; the central axis transversally passes through the supporting seat, the fork seats, the retaining rings, and the distance sleeves, and then convexly extends out of the retaining rings; the supporting seat can rotate correspondingly to the fork seats; if matching with a shock absorbing spring, the utility model can reach the purpose of shock absorption. The utility model has the advantages of artful structural design, simple structure, convenient installation, and convenient maintenance.

Description

The bicycle middle shaft device

The utility model relates to a kind of bicycle middle shaft device.

At present, the bicycle middle shaft device that people ride has a bottom bracket axle, and the outside face of bottom bracket axle rearward is connected with back vent; Be connected with cant beam to the front upper place; Be connected with seat bar between back vent and the preceding cant beam, the inner ring connection bearing of bottom bracket axle, bearing connects axis, and axis protrudes bottom bracket axle, and the left side connects left foot turns, and the right connects axis, this structural damping poor performance, installation and maintenance inconvenience.

The purpose of this utility model is to provide a kind of damping performance good, and installation and maintenance are the bicycle middle shaft device easily.

Shaft device had a bearing during the purpose of this utility model was achieved in that, respectively there is a forked standard on bearing two limits, in the middle of bearing and forked standard spacer was arranged, and the both sides of forked standard respectively connect a back-up ring, and axis crosses bearing, forked standard, back-up ring, spacer and protrudes outside back-up ring.

Be connected with preceding cant beam in the radial position of bearing outside face, the right of preceding cant beam is connected with seat bar, and the bearing inner ring connects two bearings, and adapter sleeve is arranged between the two bearings.

In the middle of the forked standard is Baltimore groove, and a back vent is respectively arranged in the radial position of forked standard outside face, the inner ring connection bearing, and respectively there is a round platform in the inner ring outside.

Owing to adopted such scheme, bearing is separated by spacer in the middle of forked standard, and the both sides of forked standard respectively connect a back-up ring, also protrudes in being transverse in axis outside back-up ring, and left end connects left foot with bearing pin and turns, and right-hand member connects right crus of diaphragm with bearing pin and turns; Preceding cant beam is arranged in the radial position of bearing appearance, and there is seat bar on the right of preceding cant beam, in the radial position of the outside face of forked standard back vent is arranged, and bearing is coaxial with forked standard, can relatively rotate between them.On the back cant beam of bicycle, damping spring is installed, in the time of by bike, the people has backward a power to seat bar and preceding cant beam, and bearing clockwise rotates, then the damping spring on the cant beam has an antagonistic force again to seat bar, power passes to back vent, impels back vent to drive forked standard and rotates counterclockwise, thereby alleviated people's vibration onboard, realized the purpose of this utility model, this structural framing is ingenious, and is simple in structure, is convenient to I﹠M.

Be described further in conjunction with the embodiments with reference to the accompanying drawings below.

Fig. 1 is the constructional drawing of embodiment.

Fig. 2 is the block diagram of embodiment.

Embodiment: in Fig. 1, bearing 7 is separated by spacer 4 in the middle of forked standard 5, the both sides of forked standard 5 respectively connect a back-up ring 3, be transverse in interior also protrusion outside back-up ring 3 with axis 9, left end connects left foot with bearing pin 2 and turns 1, right-hand member connects right crus of diaphragm with bearing pin 2 and turns 10, preceding cant beam 11 is arranged in the radial position of bearing 7 appearances, there is seat bar 13 on the right of preceding cant beam 11, and bearing 7 inner rings connect two bearings 8, and adapter sleeve 6 between the two bearings, for the Baltimore groove two ends one cover is arranged respectively in the middle of the forked standard 5, in the radial position of the outside face of cover a rear fork 12 is arranged respectively, inner ring connection bearing 8, inner ring lateral surface respectively have a circle platform.

Claims

1, a kind of bicycle middle shaft device, it is characterized in that: middle shaft device has a bearing, and respectively there is a forked standard on bearing two limits, and spacer is arranged in the middle of bearing and forked standard, the both sides of forked standard respectively connect a back-up ring, and axis crosses bearing, forked standard, back-up ring, spacer and protrudes outside back-up ring.

2, bicycle middle shaft device according to claim 1 is characterized in that: be connected with preceding cant beam in the radial position of bearing outside face, the right of preceding cant beam is connected with seat bar, and the bearing inner ring connects two bearings, and adapter sleeve is arranged between the two bearings.

3, bicycle middle shaft device according to claim 1 is characterized in that: for Baltimore groove, a back vent is arranged respectively in the radial position of forked standard outside face in the middle of the forked standard, and the inner ring connection bearing, respectively there is a round platform in the inner ring outside.