CN2302186Y

CN2302186Y - Foldable bicycle

Info

Publication number: CN2302186Y
Application number: CN 96206058
Authority: CN
Inventors: 吴大平
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-16
Filing date: 1996-03-16
Publication date: 1998-12-30
Anticipated expiration: 2006-03-16

Abstract

The utility model discloses a bicycle with the same riding speed and posture as popular bicycles in cities nowadays; when the bicycle is not used, a front wheel, a handle, a saddle and a luggage carrier can be conveniently folded backwards and downwards. The folded bicycle is no longer than 1 meter, no higher than 0.6 meter and no wider than 0.2 meter, the parking occupation area of the folded bicycle is only 0.2*0.6 square meters, and thus, the folded bicycle can be conveniently carried upstairs and downstairs, in an elevator, indoors for storage or in a car to go on a journey. Folding and unfolding processes are simple, and no tool is needed for accomplishing the processes. In any state, no part can be disassembled by a user without tools.

Description

A kind of folding bicycle

The utility model relate to a kind of can folding of bicycle, particularly a kind of be convenient to deposit after folding be well suited for the folding bicycle that urban family uses.

Now, bicycle has spread to each family in China cities and towns, is the indispensable walking-replacing tools of people.But rise because the urgency of bicycle quantity is poly-, the continuous appearance of city middle-high building, the urban land anxiety, the keeping problem of bicycle is just more outstanding.Because keeping is not good at, bicycle is lost serious day by day, causes damage to the city dweller.This can folding, the bicycle of being convenient to deposit has just solved this problem.

Task of the present utility model is to provide a kind of bicycle as current trend to ride, and satisfies city dweller's routine, living needs, again can be folding very easily when not using, its length of folding back is not more than 1 meter, and height is not more than 0.6 meter, widely is not more than 0.2 meter.Volume is little, and is in light weight, is convenient to keeping, saves the bicycle that bicycle parking is taken up an area of.

The design of the utility model bicycle is such: in order to reduce the size of bicycle, use undersized wheel, in order to guarantee that the speed of a motor vehicle can be consistent with the speed of a motor vehicle of the bicycle of current trend, so strengthen the transmitting ratio between foot-operated and the rear flywheel, the speed of a motor vehicle loss after reducing with the compensation wheel; When not using, vehicle body is shortened, and front-wheel is folded back, to reduce the vehicle commander; Vehicle seat and barre, baggage rack are folded back, to reduce overall height; Further with handlebar and foot-operated folding, to reduce overall width; No matter when all as a whole bicycle is, and any member separates during not because of folding or opening operation.Folding open convenient, fast, reliable, serviceable tool not.

Below with reference to drawings and Examples, this bassinet structure is described in detail:

Schematic diagram after Fig. 1 bicycle launches and folds.

The local figure of Fig. 2 I.

The local figure of Fig. 3 II.

The local figure of Fig. 4 III.

The foot-operated folding schematic diagram of Fig. 5.

Embodiment 1:

The bicycle structure that provides with reference to solid line part among Fig. 1 and Fig. 2,3,4.Front-axle beam (1) is hinged with hinge (J) with preceding forked standard (6), and the top of front-axle beam (1) is pinned by latch (19), and front fork (5) is installed in the preceding forked standard (6), and front-wheel (3) is installed in the bottom, and top has hole (0).Direction lever (7) is inserted in front fork top, inserts position and hole (0) opposite position and has long 5～15cm length, the wide bar hole that equals hole (0) diameter, like this, after penetrating a pin on hole (0), direction lever (7) just can axially move in the front fork upper hole, and can not pull off.After insertion, the snap close (25) that is hinged on direction lever (7) is buckled together (7) and (5), and both can not be relatively moved again.

The handle (34) of grasping bicycle directional is installed in the upper end of direction lever (7), handgrip is folding, see shown in Figure 3, left and right handle (34), (33) are provided with band iron (28), (27) that have bar-shaped trough by an end of direction lever (7), they all insert in the hole of being made up of steel plate (37), (38), (39), (40), (41), and being provided with stage clip (31), (32) in the end, the bottom is blocked by bail (35), (36).Be installed with pin (29), (30) in the bar-shaped trough of band iron (27), (28), when pulling connecting plate (44), bail (35), (36) are withdrawed from, about ejection under the effect of spring (31), (32), and turn to left hand and right hand handle and the parallel position of direction lever (7) around pin (29), (30).

Front-axle beam (1) is through in the cover (20) that is fixed on the back rest (2) and go up is provided with, (12), and is pinned by pinning (21) or (22), when pinning (22) or (21) when placing open position, front-axle beam (1) can be in cover axial motion.

The seat rod (AH) of vehicle seat and A point and the D point that seat stay (BD) is hinged on protheca (20) and front-axle beam (1) respectively are installed, and (BD) other end of bar is articulated in the B point of (AH) bar, when front-axle beam (1) slides in cover (20), (12) backward, the AD elongation, then vehicle seat descends.Vehicle seat (9) is installed in the H end of AH bar, point articulated at H, and I point on the vehicle seat (9) and the G point on the seat stay be hinged together with (IG) bar, be B, H, I, quadrangle of G four-point line formation, such structure is when (AH) bar and (BD) when bar moves downward backward, and vehicle seat (9) will keep the previous level invariant position.In order to make the vehicle seat can be by people's height by user's lifting, HB section and IG bar be designed to the adjustable structure of axial length.

Baggage rack (23) is hinged on the F point on the back rest, and the C point on point of the E (23) and the seat stay (BD) is hinged with connecting rod (CE), like this, the BD bar downwards, during the backward directions motion, baggage rack (23) clockwise rotates the position of (23 ') that dotted line provides around the F point.The rear end of each strut among the figure on IG, BD, CE and the baggage rack, the back rest (2) is the left-right symmetric structure.

Foot-operated being installed on the L, step stretcher, floral disc (13) drives the small tooth plate and the large fluted disc (16) (15) that are installed on the axle (M) by first chain (14) and rotates, and large fluted disc (15) drives flywheel (18) by second chain (17) again thereby drive rear wheels (4) is rotated.The bearing seat of axle (L), (M) is fixed respectively and is suspended on the back rest (2), and bearing seat (M) can be along the axial activity of the back rest (2), so that adjust the first chain length.

See lockout mechanism that Fig. 4 provides in the last setting of cover (12), axle (21) passes cover (12), on axle (21), have a recess, and on the relative position of front-axle beam (1), also have a transverse concave groove (53), when the recess on the axle (21) during over against front-axle beam (1), front-axle beam can slide in cover (21) vertically, when the groove on the front-axle beam (1) during over against axle (21), with axle (21) rotate 90 °～270 ° at this moment the position of not pruned of axle (21) just be stuck in the groove (53), so just, pinned front-axle beam, it can not be moved.The action of axle (21) is finished by dialling plate (52), axle (21) connects together with group plate (52), and extension spring (51) is housed being fixed on to dial the finger (50) on the plate (52) and be fixed between the spacing finger (49) on the cover (12), extension spring (51) is an accentric with axle (21), shown position axle (21) at recess over against front-axle beam (1) position, clockwise rotate as dialling plate (52), as long as finger (50) has been crossed the axis link position of axle (21) with spacing finger (49), under the effect of spring (51), dial plate and just drive axle (21) and clockwise rotate another position by spacing finger restriction, at this moment axle (21) just can pin front-axle beam (1).

The brake system of bicycle, the steel wire gate of available current trend is finished.

Folding and opening of this car is such:

Suppose that each member of bicycle is in the state after bicycle has just used.

1. pulling group plate (52) (available pedal finger (50) is finished) to anticlockwise direction makes axle (21) recess over against front-axle beam (1), at this moment, left hand is set upright preceding, the right hand seat of delaying unloading downwards, at this moment, front-axle beam (1) to the car rear to motion, vehicle seat backward, move downward, baggage rack clockwise rotates around axle F, position shown in the dotted line in figure.When latch (19) touched top board (11), top board was with latch (19) jack-up, and preceding forked standard top is decontroled, and front fork can rotate around (J) axle inhour, so that front-wheel is drawn in backward, as shown in phantom in Figure 1.This step will be dialled plate (44) again and push latched position after being finished, with front-axle beam (1) lock-bit.

2. left hand is held direction lever (7) top, the right hand is pulled connecting plate (44), connecting plate (44) drives bail (35) on the one hand, (36) are withdrawed from from the recess of band iron (27), (28), about (34), (33) ejection automatically under the effect of spring (32), (31), and arrival and the parallel position of direction lever (7).On the other hand, connecting plate (44) drives steel wire (45) with snap close (25) pulling, at this moment exerts oneself to upper edge direction lever (7) axis direction again, and after direction lever was pulled out, direction lever can rotate around axle O, at this moment direction lever is folded back, and folded and had just finished.

Fold sequence also can be pulled connecting plate (44) earlier, after direction mechanism is pulled out, buttresses with left hand, stirs plate (52) again, folds vehicle seat and baggage rack part.

After this car folded, trailing wheel was unsettled, and front-wheel and baggage rack land, and (54) on the baggage rack be about 2 land, so front-wheel and baggage rack are three points of contact.Fold the back front-wheel to the failing to grow up in 1 meter of baggage rack, vehicle seat is not more than 60 centimetres to the distance on ground, and vehicle seat is horizontal direction, and the car maximum width is two to ride the width of outers.

When the Che Rutu after folding placed, the people can ride seat and have a rest on vehicle seat.As walking, can hold the handgrip (8) on the baggage rack, the car rear portion is unsettled, and front-wheel lands and hauls the car walking, and this mode can haul the upper and lower stair of car, and the people that pulls a cart only bears the car weight about 50%.

Car after folding also can be placed vertically, and promptly (8) on the baggage rack and (53) land, and like this, can reduce the area that bicycle parking takies.

Car after folding also can be suspended to nail in the walls from baggage rack and deposit.

The method that car is opened is such:

1. with direction lever (7) pull-up, about inserting, bail (35) (36) can be annotated its card automatically, before direction lever being inserted in the entry, at this moment snap close (25) will automatically will (7) and (5) pinning again.

2. pull and dial plate (52) with front-axle beam (1) relieving, left hand is held the joint of direction lever and handgrip, exerts oneself backward.The right hand is held the position, back, exerts oneself forward, so just car can be drawn back, and then stir (52) operating process has just been finished in the front-axle beam pinning.

Embodiment 2:

The structure that embodiment 1 provides, beam (1), (2) cross-sectional plane are garden shape structure, the utility model beam (1), (2) cross-sectional plane also can be designed to the square or I-shape construction of hollow.

Embodiment 3:

The structure that

embodiment

1,2 provides, front-axle beam (1), (2) are by cover (20), (12) bonded assembly, the straight line portion that the utility model also can make the back rest (2) front end makes the oad of the endoporus of transversal surface greater than front-axle beam (1) transversal surface, and front-axle beam directly is through in the hole of the back rest (2) front end, the front end of the back rest has the effect of cover (20), (12) simultaneously concurrently like this, and the lockout mechanism principle is ditto constant.

Embodiment 4:

The structure that

embodiment

1,2,3 provides, on the front end axial length of the front-axle beam (1) and the back rest (2) is straight, this situation is suitable for the wheel with 10～14 inch, then can do the front end of the front-axle beam (1) and the back rest (2) in the arc-shaped if wheel is increased to 14～20 inch, the center of circle of circular arc is on the top of car beam, seat bar (AH) also makes corresponding circular arc, makes the various performances that can guarantee after this car folds like this.

Embodiment 5:

The structure that

embodiment

1,2,3,4 provides, the width behind the bicycle folding are the outer width of two stretchers, in order further to reduce the width after this car folds, stretcher can be folded again, and the width of car is further reduced.See structure shown in Figure 5.On the spindle nose (55) at the two ends of bicycle middle shaft (62), arm plate (56) is installed, on the arm plate, install foot-operated connecting lever (57), connecting lever (57) can rotate around axle (58) on arm plate (56), and pin by lock pin (60), when needs are folding, stir the toggle (59) on the lock pin (60), overcome the pressure of spring (61), lock pin (60) is stepped back, and foot-operated connecting lever (57) just turns 180 ° and folds up, after two foot-operated folding, making the width at bicycle folding rear treadle place, only is the length of bicycle middle shaft.

Claims

1, a kind of folding bicycle is characterized in that:

A, front-axle beam (1) use hinge (J) hinged with preceding forked standard (6), and the top of front-axle beam (1) is pinned by latch (19);

B, direction lever (7) are installed in the hole on front fork top, and both are running-fit, by snap close (25) (7) and front fork (5) are buckled together;

The left and right handle (34) of C, bicycle, (33) are inserted in the hole of being made up of steel plate (37), (38), (39), (40), (41), and the bottom is blocked by bail (35), (36);

D, the seat rod (AH) that vehicle seat is installed and A point and the D point that seat stay (BD) is hinged on protheca (20) and front-axle beam (1) respectively, (BD) other end of bar is articulated in the B point of (AH) bar;

E, vehicle seat (9) are installed in the H end of (AH) bar, and point articulated at H, I point on the vehicle seat (9) and the G point on the seat stay are hinged with (IG) bar, and promptly B, H, I, G four-point line constitute a quadrangle;

F, (HB) section reach (IG), and bar is the adjustable structure of axial length;

G, baggage rack (23) are articulated in the F point on the back rest, and the C point on point of the E on (23) and the seat stay (BD) is hinged with connecting rod (CE);

H, stretcher and floral disc (13) are installed in one, drive flywheel (18) thereby drive rear wheels (4) rotation by first chain (14), small tooth plate and large fluted disc (16), (15) and second chain (17);

I, front-axle beam (1) are installed in the back rest (2) and go up in the cover (20) of setting, (12), and can slide in cover, lock by the groove on axle (21) and the front-axle beam, and the recess on the axle (21) over against front-axle beam (1), can be decontroled front-axle beam.

2, device according to claim 1 is characterized in that: front-axle beam (1) and the back rest (2) cross-sectional plane are the square or I-beam section of hollow.

3, according to claim 1,2 described devices, it is characterized in that: the endoporus of the back rest (2) front end transversal surface is greater than the oad of front-axle beam (1) transversal surface, and front-axle beam directly is through in the hole of the back rest (2) front end.

4, according to claim 1,2,3 described devices, it is characterized in that: the front end of the front-axle beam (1) and the back rest (2) is done in the arc-shaped, and the garden heart of circular arc is on the top of car beam, and seat bar (AH) also makes corresponding circular arc.

5, according to claim 1,2,3,4 described devices, it is characterized in that: on the spindle nose (55) at the two ends of bicycle middle shaft (62), arm plate (56) is installed, on the arm plate, install foot-operated connecting lever (57), connecting lever (57) can rotate around axle (58) on arm plate (56), and is pinned by lock pin (60); Stir the toggle (59) on the lock pin (60), foot-operated connecting lever (57) just turns 180 ° and folds up.