CN2628401Y

CN2628401Y - Foldable two-wheeled cycle

Info

Publication number: CN2628401Y
Application number: CN 02288249
Authority: CN
Inventors: 焦焱
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-13
Filing date: 2002-12-13
Publication date: 2004-07-28
Anticipated expiration: 2012-12-13

Abstract

The utility model provides a foldable two-wheel cycle which mainly comprises a front cycle frame, a rear cycle frame, a connecting part, a rotary shaft and a connecting frame, wherein one end of the front cycle frame is connected with a front wheel; one end of the rear cycle frame is connected with a rear wheel, and the other end is rotatablely connected with the other end of the front cycle frame; one end of the connecting part is rotatablely connected with one of the front cycle frame and the rear cycle frame, and the other end is fixedly connected with the other one of the front cycle frame and the rear cycle frame in a dismountable mode; the rotary shaft enables the front cycle frame and the rear cycle frame to relatively rotate around the same shaft; one end of the connecting frame is connected with one position of the two-wheel cycle, and the other end is provided with a rotating wheel. When the two-wheel cycle is in folding state, the rotating wheel can be in rolling contact with the ground. When the two-wheel cycle is in vertical working condition, the shaft line of the rotary shaft deflects an angle in the horizontal plane relatively to the wheel axle direction of the front wheel or the rear wheel, and thus, when the rotary shaft rises, the front wheel and the rear wheel rotate correspondingly around the rotary shaft and approach mutually as the front wheel and the rear wheel are in contact with the ground. Simultaneously, the rotating wheel of the connecting frame is gradually adjacent to the ground until the rotating wheel contacts the ground.

Description

Collapsible two-wheel car

(1) technical field

The utility model relates to a kind of collapsible two-wheel car.

(2) background technology

Two-wheel car is as a kind of vehicle, when withdraw from use, usually have some two-wheel cars especially bicycle can be folded into the less shape of volume, be convenient to take in placement.Yet there is following problem in these collapsible two-wheel cars:

At first, some two-wheel car just no longer can rely on the rolling of front and back wheel to produce mobile after folding.And other two-wheel cars folding after, move in order still to rely on front and back wheel to roll, generally consider front and back wheel is arranged to coaxial parastate.According to the method that three dimensional space all can be realized, there are following 3 kinds at present:

First kind of----front and back type: the front vehicle frame of two-wheel car is become stretching structure with the back Vehicle Frame Design, by both oppositely translations mutually, shorten the wheelspan of front-wheel and trailing wheel, yet this method makes the two-wheel car volume after folding still bigger, poor effect is therefore by less employing.

Second kind of----left right model: the midway location at front-wheel and trailing wheel is provided with a S. A., direction of principal axis is perpendicular to the ground, make front vehicle frame and back vehicle frame center on this S. A., thereby make front-wheel and trailing wheel mutually near reaching folded state in the mutual contrarotation of horizontal surface direction.This is the method that present most of folding two-wheel vehicle adopts, yet it make the cyclist with front vehicle frame and back vehicle frame mutually near the time, can't finish with the simple motion that one hand is upwards mentioned, but rely on both hands to do to draw in action in the horizontal direction, the possibility that exists finger to be blocked by the two-wheel car parts, folding operation lacks convenience and safety.

The third----goes up mo(u)ld bottom half: the midway location at front-wheel and trailing wheel is provided with a S. A., raise this S. A. by mentioning, make front vehicle frame and back vehicle frame by gravity center on S. A., thereby make front-wheel and trailing wheel mutually near reaching overlap condition in the mutual contrarotation of vertical surface direction.This method must possess two conditions: the first, and the direction of principal axis of S. A. and the service direction of two-wheel car are three-dimensional tilt; Second, in order to make front-wheel and trailing wheel as close as possible at axial (radial center end face), the connection mode of wheel and vehicle frame all must be designed to the single armed supporting construction, after making two-wheel car folding, two are supported the outermost that single armed lays respectively at two wheels, and do not have the vehicle frame hold-down arm to intercept in the middle of two-wheeled.This method, require all very high for the precision control of S. A. angle and the design strength of single armed supporting construction, increased the manufacturing cost of two-wheel car undoubtedly greatly, make as the two-wheel car of ordinary consumption product is difficult and accepted by the public, the also difficult processing of Xiang Guan parts simultaneously, therefore, this method seldom is used in practice.

In addition, when some two-wheel cars are placed in folding back, need be with a certain parts originally not in contact with the ground as the 3rd fulcrum that contacts to earth, the fulcrum that this is new does not have wheeled rollability.When the cyclist need move two-wheel car after folding, must mention these parts, make these parts as above-mentioned the 3rd fulcrum built on stilts, this just makes the cyclist must overcome the part gravity of two-wheel car, has increased the operational load the when cyclist moves two-wheel car.

(3) summary of the invention

Therefore, the purpose of this utility model is to provide a kind of collapsible two-wheel car, when two-wheel car overlaps front-wheel and trailing wheel to be in folding stable when being placed on ground-surface state at least by folding device, though the S. A. of front-wheel and trailing wheel is the deflection disalignment mutually, but be parallel to each other in ground-surface projection, and the two-wheel car after folding stably can be placed on the ground and can be promoted two-wheel car by a rotatable support and move along ground.

According to the utility model, a kind of collapsible two-wheel car is provided, it comprises:

A front-wheel; A trailing wheel; A seat cushion and a seat cushion bar that supports seat cushion; A pair of crank; A pair of foot-operated; The handle riser of a supported cart handle; One one end connects the front vehicle frame of front-wheel; One one end connection trailing wheel, the other end are connected in the back vehicle frame of the front vehicle frame other end rotationally; The folding device of one folding two-wheel car, it comprises:

A junction branch, one end are connected in one of front vehicle frame and back vehicle frame rotationally, and the other end is removable

Be fixedly connected on with unloading front vehicle frame and the back vehicle frame another,

One makes the rear end of front vehicle frame and the revolving joint that links to each other of front end of back vehicle frame, described rotation

Connecting device comprises that one makes front vehicle frame and the back vehicle frame can be around its coaxial counterrotating S. A.,

Also comprise a link span, the one end is connected in two-wheel car one position, and the other end is equipped with a runner, and when two-wheel car was in folded state, this runner is kiss the earth rollably,

When two-wheel car is in vertical running condition, the axis of described S. A. is in angle of wheel direction of principal axis skew of relative front-wheel of horizontal surface or trailing wheel, make when described S. A. rises, front-wheel and trailing wheel along ground around this axle relatively rotate ground close mutually, the runner of link span is close with ground gradually simultaneously, contact with ground until runner, become the new fulcrum that contacts to earth of two-wheel car, when two-wheel car is in folded state and can stably places on the ground, front-wheel and trailing wheel at least a portion are overlapped, the mutual deflection disalignment of front-wheel wheel shaft and rear axle, front-wheel, trailing wheel, the projection of runner wheel shaft separately in ground is parallel to each other.

In aforesaid collapsible two-wheel car, described revolving joint comprises a sleeve pipe and the intermediate plate that depressed part is arranged in one of back vehicle frame front end and front vehicle frame rear end at one of front vehicle frame rear end and back vehicle frame front end, this sleeve pipe places the depressed part of intermediate plate, and rotating shaft coaxle passes them.

In aforesaid collapsible two-wheel car, one of front end of the rear end of described front vehicle frame and back vehicle frame has a contact surface, there are two first and second stop surfaces that have angle mutually one of the front end of described back vehicle frame and rear end of front vehicle frame, when described two-wheel car is in folded state, described contact surface is resisted against on described first stop surface to stop relatively rotating between front vehicle frame and the back vehicle frame, when described two-wheel car was in running condition, described contact surface was resisted against on described second stop surface to stop relatively rotating between front vehicle frame and the back vehicle frame.

In aforesaid collapsible two-wheel car, comprise that also one is used to support the seat cushion rod bush of described seat cushion bar, described connecting bridge is fixedly connected to this seat cushion rod bush, determine the extension elongation of seat cushion bar by regulating the built-in length of described seat cushion bar in described seat cushion rod bush, after making that two-wheel car is folding and finishing, described handle riser at least a portion is between described seat cushion bar and described front vehicle frame, described handlebar and described seat cushion and described trailing wheel are positioned at the same side of described front vehicle frame, to dwindle the oad of two-wheel car folded state.

In aforesaid collapsible two-wheel car, an inhibiting device is arranged near being positioned at back vehicle frame central siphon, after being used for that two-wheel car is folding and finishing, limit described crank and the described foot-operated described front-wheel that brushes up against.

In aforesaid collapsible two-wheel car, described sleeve pipe is in the front vehicle frame rear end, and described intermediate plate is at back vehicle frame front end.

In aforesaid collapsible two-wheel car, described contact surface is in the rear end of described front vehicle frame, and described two stop surfaces are at the front end of described back vehicle frame.

(4) description of drawings

Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, so that more understand these and other purpose, feature and advantage of the present utility model in depth.In institute's drawings attached, related direction in space all with the moving direction of two-wheel car as forward reference direction.

Fig. 1 is the block diagram of the preferred embodiment of a kind of two-wheel car that can fold of the utility model;

Fig. 2 is a three-dimensional exploded view, the connection structure of link span, runner and the vehicle frame of displayed map 1 collapsible two-wheel car;

Fig. 3 is a three-dimensional exploded view, the folding device of collapsible two-wheel car thereby demonstration front vehicle frame and back vehicle frame link to each other rotatably, and the connecting bridge that front vehicle frame and back vehicle frame are fixedly linked separably;

Fig. 4 is a block diagram, shows to mention the mutual close state of handle, front-wheel and trailing wheel;

Fig. 5 is a lateral plan, and after the demonstration two-wheel car was folded and finishes, each parts remained on the state of firm support;

Fig. 6 A and 6B are respectively front elevation and back view, and after the demonstration two-wheel car was folded and finishes, each parts remained on the state of firm support.

Fig. 7 is a upward view, shows that two-wheel car is folded the state that the back that finishes is seen from the two-wheel car bottom.

(5) specific embodiment

Below be that example describes embodiment of the present utility model in detail with the bicycle.

Now, as shown in Figure 1, as the utility model preferred embodiment, this can folding of bicycle comprising a: front-wheel 11; A trailing wheel 12; A vehicle seat 13; The seat cushion bar 14 of a supporting seat; A pair of

crank

16L, 16R; The a pair of foot-operated 17L that is connected in crank, 17R; A handlebar 18 and a handle riser 19 that is used for the supported cart handle; A front end is used for and the continuous front vehicle frame 21 to be connected handlebar and front-wheel of the sleeve pipe of handle riser 19 or handle riser 19 lower ends; Rear end is used to connect the back vehicle frame 22 that trailing wheel 12, front end are used for connecting rotationally the front vehicle frame rear end; The connecting bridge 23 that they can relatively rotate and interfix that makes that is used to connect front vehicle frame 21, back vehicle frame 22, it is connected in a seat cushion rod bush 15 that is used for supporting seat lining bar 14; A handle 24 that is used for mentioning when folding vehicle frame; A link span 26, its rear end are connected in a certain position of bicycle, are connected in the front end of front vehicle frame 21 in an embodiment, and its front end is equipped with a runner 27.

As shown in Figure 2, be clipped in the both sides of the last sleeve pipe T1 on front vehicle frame 21 front ends by the upper clamping piece S1 of link span rear end, according to axis E 1 hole and sleeve pipe T1 on the intermediate plate S1 are axially aligned, be clipped in the both sides of the case in T2 on front vehicle frame 21 front ends again by lower clamping piece S2 in the link span rear end, according to axis E 2 hole and sleeve pipe T2 on the intermediate plate S2 are axially aligned, thus link span 26 is installed on the front side of front vehicle frame 21.The outside of intermediate plate S1 and intermediate plate S2 is screwed into hole in intermediate plate and the sleeve pipe by 4 screw B1 respectively, so that link span 26 is fixed on the front side of front vehicle frame 21.Link span 26 front bottom end have an intermediate plate S3 such as " U " shape, and runner 27 places in the middle of the intermediate plate S3 that has with the coaxial aperture of axis E 3, according to axis E 3 alignment, and fix with bearing pin A3.

As shown in Figure 3, one end of connecting bridge 23 can be rotationally connected with the position near the back vehicle frame of front vehicle frame 21 around rotation axis E4, its other end is fixed in seat cushion rod bush 15, and in this embodiment, connecting bridge 23 is connected in an attaching parts S4 who is fixed on front vehicle frame 21 particularly.(to refer to that two-wheel car is perpendicular to the ground) when two-wheel car travels parallel to the ground and with respect to the axial direction FC1 of front-wheel or the trailing wheel angle θ 1 that tilts for rotation axis E4.When connecting bridge 23 by seat cushion rod bush 15 drive seat cushions 13 and seat cushion bar 14 globalities rotate forward around rotation axis E4 the time, can make seat cushion bar 14 relative front vehicle frame 21 generation deflections.Front vehicle frame 21 is connected according to the counterrotating mode of common rotation axis E9 that can center on them by folding device with back vehicle frame 22, is specially: with the sleeve pipe T6 of bottom, front vehicle frame 21 rear ends, be positioned in the middle of a pair of intermediate plate S6 of back vehicle frame 22 front ends.Be provided with 1 group of cooresponding hole H4 at intermediate plate S6.Pass hole H4 and sleeve pipe T6 with pair of rotary shafts cover A1 and A2 respectively along rotation axis E9, lock by screw B3.E4 is similar with rotation axis, and rotation axis E9 is parallel to the ground when two-wheel car travels, and with respect to the axial direction FC1 of front-wheel or the trailing wheel angle θ 3 that tilts.

The partial enlarged drawing of Fig. 3 has shown the clamping principle of quick detach handle 28: an end of quick detach handle 28 is one to have the cam end of camming surface C0, this camming surface C0 contacts with an end face at bearing pin A6 one end and the slide block M1 that can move along bearing pin A6, this handle 28 can rotate around the cylindrical pin A7 that passes this cam end, when quick detach handle 28 rotates around cylindrical pin A7, along with producing length, the distance between the axle center of the part of camming surface C0 contact slipper M1 and cylindrical pin A7 changes, camming surface C0 promotes to have the slide block M1 that clamps function and moves on bearing pin A6, concrete as: quick detach handle 28 and bearing pin A6 are roughly 90 when spending, slide block M1 is nearest with the nut B4 on the bearing pin A6 other end, at this moment, quick detach handle 28 is in clamped condition; When quick detach handle 28 and bearing pin A6 are roughly 180 when spending, slide block M1 and nut B4 are apart from far away, and quick detach handle 28 promptly is in releasing orientation.In the collapsible two-wheel car shown in for example, have 2 place's structures to use quick detach handle 28, be respectively: during built-in length in the control seat lining bar 14 present lining bar sleeve pipes 15, quick detach handle 28A is used in the upper end of present lining bar sleeve pipe 15; The intermediate plate S5 of control seat lining bar sleeve pipe 15 bottoms with vehicle frame 22 tops, back or when the sleeve pipe T7 on the middle pipe MT of vehicle frame 22 two stands is clamped condition after being connected of this place, at sleeve pipe T7 place use quick detach handle 28B.Shown also in the partial enlarged drawing of Fig. 3 that as quick detach handle 28B when being in releasing orientation, with the contact condition of backing block P1 of back vehicle frame 22, when this will be for collapsible two-wheel car, restriction crank 16L and foot-operated 17L brushed up against trailing wheel 12 and provide support.

As shown in Figure 3, connecting bridge 23 with the separable connection mode of back vehicle frame 22 is: a pair of intermediate plate S5 that will be arranged on bench hassock tube sleeve pipe 15 bottoms places the both sides of the sleeve pipe T7 that is fixed on vehicle frame 22 upper ends, back, that the bearing pin A6 of quick detach handle 28B is passed intermediate plate S5 bottom colludes pawl C1 and sleeve pipe T7 again, opposite side at intermediate plate S5 is spun on the bearing pin A6 with nut B4, makes them coaxial along axis E 10.The bottom of front vehicle frame 21 has the upper surface C3 of a plane C2 and the intermediate plate S6 of back vehicle frame 22 front ends to support mutually to close, thereby can under the counterrotating state of rotation axis E9, stop them to be further rotated at front vehicle frame 21 and back vehicle frame 22, under the two-wheel car running condition, to constitute a stable angle mutually.Like this, front vehicle frame 21, back vehicle frame 22 just become the structure of captiveing joint to each other with connecting bridge 23.

As shown in Figure 4, during the folding two-wheel car, at first handlebar 18 is driven front-wheel 11 Rotate 180 degree backward, purpose is to shorten the wheelspan of front-wheel 21 and trailing wheel 22, reduces the oad after two-wheel car folds.The sleeve pipe of handle riser 19 relative its lower ends is rotated down the state that makes handlebar 18 and front vehicle frame 21 be almost parallel, again with a latching device (not shown) and front vehicle frame 21 lockings of handle riser 19 by being positioned at front vehicle frame 21 front portions, so also just locked the wheel shaft of the front-wheel 11 that is maintained fixed with handle riser 19 simultaneously, making front-wheel 11 can not be that rotate in the axle center with handle riser 19.Sleeve pipe that is positioned at handle riser 19 bottoms and folding latching device that present embodiment is related, because existing many known structures, so be not shown specifically in the drawings.Behind the clamped condition of removing quick detach handle 28A, the built-in length in the adjustment seat lining bar 14 present lining bar sleeve pipes 15, and then clamp quick detach handle 28A makes the seat cushion 13 can be firmly suitably away from bench hassock tube sleeve pipe 15.When connecting bridge 23 dumps forward around rotation axis E4 with driving seat cushion 13 and seat cushion bar 14 globalities, the outside (seeing in the left side) of the handle riser 19 that seat cushion bar 14 is positioned at fold from Fig. 6 A, simultaneously, seat cushion 13 is positioned at the outside of link span 26.Such modes of emplacement helps reducing the oad of two-wheel car after folding.Above-mentioned state also has clear demonstration in Fig. 6 A.Again as shown in Figure 3, because the middle pipe MT at back vehicle frame 22 is provided with a backing block P1, this backing block P1 also is positioned near the sleeve pipe T7 simultaneously, shown in partial enlarged drawing and Fig. 6 B, behind the clamped condition of having removed quick detach handle 28B, quick detach handle 28B just can lean against on the backing block P1, and restriction quick detach handle 28B continues to rotate around bearing pin A7, thereby outwardly directed quick detach handle 28B is kept relative stability, and this just can be used as a kind of inhibiting device and supports crank 16L and foot-operated 17L.Therefore, as shown in Figure 5, two-wheel car is folding finish after, crank 16L and foot-operated 17L can not brush up against front-wheel 11.The inhibiting device that more than provides is a kind of exemplary configurations, also can take in addition such as band being set in order to mode of tightening fixed crank 16 or the like at back vehicle frame 22.Also show when the cyclist upwards mentions handle 24 among the figure, the rear end of front vehicle frame 21 is elevated, the front end that has also driven simultaneously back vehicle frame 22 is elevated, by gravity front vehicle frame 21 is rotated around rotation axis E9 is relative respectively with back vehicle frame 22, close mutually under the situation of keeping in touch with ground, link span 26 and runner 27 are gradually near ground.

After Fig. 5 had shown that two-wheel car is folding and finishes, each parts remained on the state of firm support.The lower surface C7 of the plane C2 of front vehicle frame 21 bottoms and back vehicle frame 22 front end intermediate plate S6 contacts some, therefore in the process of collapsible two-wheel car, can limit front vehicle frame 21 and further rotate, thereby just can not relatively rotate again after reaching an angle each other relative to back vehicle frame 22.Exemplarily shown the center-of-gravity position BC after two-wheel car folds among the figure, can clearly be seen that center-of-gravity position BC is arranged in the place ahead of the centre of gration E11 of front-wheel 11 (being positioned at the left side of the centre of gration E11 of front-wheel 11 at Fig. 5 center-of-gravity position BC), front vehicle frame 21 also roughly is positioned at the place ahead of centre of gration E11 simultaneously, but front vehicle frame 21 can not according to action of gravity drive each the link globality be positioned at centre of gration E11 the place ahead around centre of gration E11 along direction FC2 rotation, reason is, 26 bonded assembly runners of link span in the front end setting of front vehicle frame 21 touch ground 27 this moments, become the new fulcrum of two-wheel car.Owing to front-wheel 11 and front vehicle frame 21 are maintained the lock status before this, when runner 27 and front-wheel 11 simultaneously during kiss the earth, on the fore-and-aft direction of two-wheel car, can keep the stable of each parts, especially the height and position of rotation axis E9 and coaxial rotary sleeve A1, A2 (in the vertical surface direction) is defined, this just make with rotary sleeve A1, A2 bonded assembly after vehicle frame 22 and the trailing wheel 12 that driven thereof with the state kept in touch in ground under can't around rotation axis E9 along direction FC3 and front vehicle frame 21 produce separate mobile.Therefore, do not needing to increase under the situation of new latching device, front vehicle frame 21 can remain on the stabilized conditions that is folded each other with back vehicle frame 22, makes front-wheel 11, trailing wheel 12 and the stable simultaneously kiss the earth of runner 27, and this just makes folding operation become simple and convenient.

After Fig. 6 A and 6B had shown that two-wheel car is folding and finish with front elevation and back view respectively, each parts kept the stable state of placing.From Fig. 6 A, can clearly see handle riser 19 some between seat cushion bar 14 and front vehicle frame 21, simultaneously, handlebar 18 and seat cushion 13 and trailing wheel 12 are positioned at the same side of front vehicle frame 21, and obviously, such being provided with can reduce the two-wheel car oad after folding.In Fig. 6 B, can see, because axial direction FC1 deflection one angle theta 3 of the relative two-wheel car wheel of rotation axis E9, cause front vehicle frame 21 and back vehicle frame 22 respectively around rotation axis E9 is relative when rotating, produce deflection gradually, thereby produce staggered gap when making front-wheel 11 and trailing wheel 22 close mutually, can realize that like this front-wheel 11 as shown in Figure 5 has the overlapping state of a part at least with trailing wheel 12.At this moment, also deflection and disalignment gradually of the rotation axis E12 of the rotation axis E11 of front-wheel 11 and trailing wheel 12.

Fig. 7 is that two-wheel car folds the upward view after finishing.The rotation axis E11 of front-wheel 11, the rotation axis E12 of trailing wheel 12 and the rotation axis E3 of runner 27 are the deflection out-of-alignments at front elevation or back view, but can keep being parallel to each other in ground-surface projection, i.e. rotation axis E3 in the upward view of Fig. 7, E11 is parallel with E12 to each other, after this just means that two-wheel car is folding and finishes, still has the wheeled rolling function that each wheel rolls around separately rotation axis respectively, the cyclist needn't overcome any parts that gravity is mentioned two-wheel car, only need stretch the deuce palm and easily promote two-wheel car, two-wheel car is moved, this will alleviate cyclist's operational load greatly, obviously be different from existing collapsible two-wheel car.

In sum, the collapsible two-wheel car that the utility model provides has the following advantages:

Make front vehicle frame and the coaxial counterrotating rotation axis of back vehicle frame angle of wheel hub direction skew in being parallel to ground-surface plane (two-wheel car is in vertical riding condition) with respect to two-wheel car, the deflection that promptly is the horizontal two-dimension mode, make front-wheel and trailing wheel in close mutually process, produce standoff gradually, and form the overlapping state of at least a portion, thereby can two-wheel car is compact-folded.In addition, front-wheel and trailing wheel also can remain and the ground touch scrolling, make the cyclist only need use very little strength can finish folding operation.

Be provided with runner at the link span that is connected with vehicle frame, can finish new fulcrum after folding as two-wheel car.Runner and front-wheel and trailing wheel be simultaneously during kiss the earth, and above-mentioned three is under deflection out-of-alignment state mutually, and rotation axis is parallel to each other in ground-surface projection separately, thereby after making that two-wheel car is folding and finishing, still can rely on wheeled rolling form to move.The cyclist needn't overcome a certain parts that gravity is mentioned two-wheel car, only needs thrust a little, promptly removable two-wheel car, and this will alleviate cyclist's operational load greatly.At this moment, the handle that is stabilized placement can become the dependence that the cyclist promotes two-wheel car.

In the process of collapsible two-wheel car, each parts is by stable placement one by one.Especially at operation front-wheel and trailing wheel during mutually near this committed step, the cyclist only needs one hand to mention handle can accurate conveniently to finish foldingly, can avoid cyclist's finger to be run over and injure by the two-wheel car parts like this.

Two-wheel car is folding finish after, front vehicle frame and back vehicle frame can constitute stable support not needing to increase under the state of any latching device, have not only simplified body frame structure for automotive, have also simplified cyclist's folding operation.Simultaneously, parts such as handlebar, handle riser, seat cushion, seat cushion bar and trailing wheel all are positioned at the same side of front vehicle frame, make the two-wheel car oad compact more, save placement space.

Front vehicle frame and back vehicle frame respectively with the connection mode of front-wheel and trailing wheel, the same with existing most two-wheel cars, still adopted the mode that clamps with both arms in the wheel both sides, in assurance original performance of two-wheel car and safety, also can utilize original detail.Therefore the folding device in the collapsible two-wheel car that provides of the utility model can be applied to most of two-wheel cars comparatively extensively, easily.

As from the foregoing, collapsible two-wheel car and folding device according to the utility model provides have good operability and exploitativeness, and folding process is convenient, quick, accurate, and under folded state, the cyclist still can light mobile two-wheel car simultaneously.

The above is the detailed description of preferred embodiment of the present utility model; be not to be used for limiting scope of the present utility model; all scopes of the present utility model should be as the criterion with described claim scope; the embodiment and the approximate construction of all similar variations of being done in the claim scope all should be contained in the protection domain of the present utility model.

Claims

1. collapsible two-wheel car, it comprises:

A front-wheel; A trailing wheel; A seat cushion and a seat cushion bar that supports seat cushion; A pair of crank; A pair of stretcher; The handle riser of a supported cart handle; One one end connects the front vehicle frame of front-wheel; One one end connection trailing wheel, the other end are connected in the back vehicle frame of the front vehicle frame other end rotationally; The folding device of one folding two-wheel car, it comprises:

A junction branch, one end are connected in one of front vehicle frame and back vehicle frame rotationally, and the other end removably is fixedly connected on another of front vehicle frame and back vehicle frame,

One makes the rear end of front vehicle frame and the revolving joint that links to each other of front end of back vehicle frame, and described revolving joint comprises that one can is characterized in that front vehicle frame and back vehicle frame around its coaxial counterrotating S. A.,

When two-wheel car is in vertical running condition, the axis of described S. A. is in angle of wheel direction of principal axis skew of relative front-wheel of horizontal surface or trailing wheel, make when two-wheel car is in the vertical folding state, front-wheel, trailing wheel and runner are kept in touch with ground simultaneously, front-wheel and trailing wheel at least a portion are overlapped, the mutual deflection disalignment of front-wheel wheel shaft and rear axle, the projection of front-wheel, trailing wheel, runner wheel shaft separately in ground is parallel to each other.

2. according to the collapsible two-wheel car of claim 1, it is characterized in that, described revolving joint comprises a sleeve pipe and the intermediate plate that depressed part is arranged in one of back vehicle frame front end and front vehicle frame rear end at one of front vehicle frame rear end and back vehicle frame front end, this sleeve pipe places the depressed part of intermediate plate, and rotating shaft coaxle passes them.

3. according to the collapsible two-wheel car of claim 1, it is characterized in that, one of front end of the rear end of described front vehicle frame and back vehicle frame has a contact surface, there are two first and second stop surfaces that have angle mutually one of the front end of described back vehicle frame and rear end of front vehicle frame, when described two-wheel car is in folded state, described contact surface is resisted against on described first stop surface to stop relatively rotating between front vehicle frame and the back vehicle frame, when described two-wheel car was in running condition, described contact surface was resisted against on described second stop surface to stop relatively rotating between front vehicle frame and the back vehicle frame.

4. according to the collapsible two-wheel car of claim 1, it is characterized in that, comprise that also one is used to support the seat cushion rod bush of described seat cushion bar, described connecting bridge is fixedly connected to this seat cushion rod bush, determine the extension elongation of seat cushion bar by regulating the built-in length of described seat cushion bar in described seat cushion rod bush, after making that two-wheel car is folding and finishing, described handle riser at least a portion is between described seat cushion bar and described front vehicle frame, described handlebar and described seat cushion and described trailing wheel are positioned at the same side of described front vehicle frame, to dwindle the oad of two-wheel car folded state.

5. according to the collapsible two-wheel car of claim 1, it is characterized in that an inhibiting device being arranged near being positioned at back vehicle frame central siphon, after being used for that two-wheel car is folding and finishing, limit described crank and the described foot-operated described front-wheel that brushes up against.

6. according to the collapsible two-wheel car of claim 2, it is characterized in that described sleeve pipe is in the front vehicle frame rear end, described intermediate plate is at back vehicle frame front end.

7. according to the collapsible two-wheel car of claim 3, it is characterized in that described contact surface is in the rear end of described front vehicle frame, described two stop surfaces are at the front end of described back vehicle frame.