CN200945904Y - Curled type folding bicycle - Google Patents

Abstract

The utility model relates to a curled type folding bicycle, which belongs to portable folding bicycle, a bicycle frame can be folded to change shape so as to shrink the footprint of the frame by way of changing the connection condition of bicycle frame unit. In the prior popular folding bicycle unit, a turning point is arranged at the frame component between the front wheel and the rear wheel of the bicycle, the front wheel and the rear wheel are overlaid with each other after folding, the frame thickness after folding is bigger than that before folding, the curled type folding bicycle provides a solution of aiming at the enlarged thickness of the folded bicycle frame in prior technology; a rotating planar rotary hinge structure is used among the main units of the frame to make the bicycle frame profile to change shape in a frame plane according to requirement, the relative positions among the main units can be adjusted to make the frame to bring along the rear wheel (including the chain disc) and the front wheel of the bicycle to be folded in the same plane, for the front wheel diameter is smaller than the rear wheel diameter of the bicycle, so that the overlaying between the front wheel and the rear wheel can be avoided after folding.

Description

Curl the formula folding bicycle

Technical field: present technique relates to a kind of portable folding bicycle, can dailyly use, and portably uses in also being fit to travel outdoors.

Background technology popular folding bicycle of present stage adopts two sections folding modes of branch mostly, is that the inflection point makes the overlapping thickness of folding of bicycle front and rear wheel bigger with bicycle crossbeam middle part.Though but folding back occupation space reduces still to be not easy to carry.Present technique is the present situation of carrying at present folding bicycle inconvenience and the bicycle of folding mode in a kind of novel planar that proposes.

It is to make frame structure be converted to the deformable state by metastable state by the stationary state that changes bicycle rack body unit junction that summary of the invention is curled the formula folding bicycle, by the relative position of adjusting bicycle support body combiner bicycle rear, chain drum, front-wheel are folded under the deformable state, folding trailing wheel and front-wheel all can be curled in the space that bicycle rack surrounds.Bicycle rear depends on the trailing wheel spider and can wholely thereupon move in folding process; The bicycle front-wheel depends on bicycle front fork, and front fork is divided into two sections, folds in segmentation place front-wheel is curled.Bicycle front-wheel external diameter is less than the trailing wheel external diameter, thereby makes bicycle rear and the front-wheel can the shared separately space of reasonable distribution in same folding space, and oad reduces significantly than this prestack and thickness does not have increase behind the bicycle foldable integral, is easy to carry.

Description of drawings Fig. 1 is the state that bicycle launches, and can satisfy the requirement of travelling by bike under this state; Fig. 2 is the snap close that the bicycle support body is unclamped in expression, makes bicycle begin to fold; Fig. 3 is that expression bicycle rear and chain drum integral body are folding forward; Fig. 4 represents that bicycle front-wheel and handlebar begin to fold back; Fig. 5 represents the state finished from passerby's foldable integral.

Folding bicycle is made up of following parts: 1---the trailing wheel spider; 2---trailing wheel; 3---front-wheel (preceding wheel diameter is less than the back wheel diameter); 4---chain drum; 5,7---cant beam (dividing two sections); 8---the cross sill diagonal brace; 6,9---cross sill (dividing two sections); 10---entablatrance; 11---the vehicle seat vertical rod; 12---the front fork vertical rod; 13---the handlebar vertical rod; 14---handlebar; 15---preceding justice; 16---vehicle seat; 17---the cant beam snap close; 18---the cross sill snap close; 19---the entablatrance snap close

Explanation of nouns: snap close---to a kind of structure that bicycle rack body unit relative position retrains, adjacent cells can not produce relative displacement during the snap close locking, and adjacent cells can produce relative displacement when snap close unclamped.

The specific embodiment: state one: cant beam snap close (17), cross sill snap close (18), entablatrance snap close (19) are when locking simultaneously, and bicycle is in deployed condition, satisfies the operating needs of bicycle running.State two: unclamp cant beam snap close (17), cross sill snap close (18), entablatrance snap close (19); Pull cross sill (9), make it that angle take place and change, drive trailing wheel spider (1) (subsidiary trailing wheel 2 and chain drum 4) and take place to front-wheel direction relative displacement; The angle of reconciling two sections of cant beams (5,7) simultaneously makes the shift position of trailing wheel spider (1) satisfy relative position requirement in the folding process.State three: continue to reconcile cross sill (9) and cant beam (5,7) and make trailing wheel spider (1) (subsidiary trailing wheel 2 and chain drum 4) continue to move, drive vehicle seat vertical rod (11) position simultaneously and change.State four: trailing wheel spider (1) (subsidiary trailing wheel 2 and chain drum 4) and vehicle seat vertical rod (11) move to folding end position, and cross sill (9) and cant beam (5,7) stop to regulate; Handlebar (14) is rotated 90 ° makes it parallel with the handlebar vertical rod; Foldable handlebar vertical rod (13) makes it to be parallel to entablatrance (10); It is inwardly folding to rotate front fork (15) drive front-wheel (3).State five: finish folding.

Claims (1)

1. Thereby curl the formula folding bicycle is to make the bicycle support body be converted into the satisfied folding requirement of unstable structure by rock-steady structure by the coupled condition of regulating between the bicycle rack body unit, it is characterized in that: bicycle rear and front-wheel diameter difference, front-wheel is less than trailing wheel, the formant of bicycle support body connect present the crossing version of pentagon and hexagon and wherein three limits overlap both sides and intersect, connect into pentagon and hexagon support body by plane turning hinge structure between the unit on formation pentagon and each limit of hexagon, constitute pentagonal each unit and refer to front fork vertical rod (12) respectively, cross sill diagonal brace (8), cross sill (6), vehicle seat vertical rod (11), entablatrance (10), constitute hexagonal each unit and refer to front fork vertical rod (12) respectively, cross sill diagonal brace (8), cross sill (6), trailing wheel spider (1), cant beam (7), cant beam (5), three limits overlap and refer to front fork vertical rod (12), cross sill diagonal brace (8), cross sill (6) belongs to the total unit of pentagon and hexagonal structure, cant beam (5) is passed through in the interdigital vehicle seat vertical rods in both sides (11), the vehicle seat vertical rod belongs to scalable rod member, and vehicle seat vertical rod (11) is provided with cant beam snap close (17) with cant beam (5) infall; Cross sill extension (9) is provided with cross sill snap close (18) with front fork vertical rod intersection, front fork divides two sections, can be folding in two sections of the front forks to the trailing wheel direction with the front-wheel linkage section, trailing wheel depends on the trailing wheel spider can be folding to front fork vertical rod direction by the polygonized structure distortion.

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