CN203958497U - Folded bicycle - Google Patents

Abstract

Folded bicycle, comprises, vehicle frame forms a receiving space in it; Two support beams, two support beams are hinged on vehicle frame; Two wheels; Be arranged on the handle assembly at one of them support beam top; Seat bag, this bag is arranged on the upper end of a supporting component, and supporting component also can slide along the short transverse of vehicle frame between two support beams, and the bottom of supporting component forms an articulated section; Two gangbar, its two medial end is all articulated with articulated section, outboard end and is articulated with respectively two support beams; Be installed on the driven unit of vehicle frame side, this driven unit comprises the first rotatable parts, synchronize with the first rotatable parts connect the second rotatable parts and stretcher; By the synchronous transmission component connecting of wheel of the second rotatable parts and one of them support beam bottom.The utility model launches and the process of folding is simple, fast, easy operating, and support beam after folding can be placed in vehicle frame inside, takes up room little after folding, is easy to carry.

Description

Folded bicycle

Technical field

The utility model relates to a kind of folded bicycle.

Background technology

Folded bicycle is a kind of follow-on short distance traffic instrument, current folded bicycle is mainly to comprise folding bicycle or electric motor bicycle with folding, it is all to utilize the folding joint of vehicle frame to realize the folding of car load, as disclosed multifunction folding trolley in the publication number patent documentation that is CN101492082, its in fact a kind of foldable structure that is applied to bicycle, this foldable structure is that crossbeam is divided into leading portion crossbeam and back segment crossbeam two parts, front end cross beam utilizes a folder to be connected with back segment crossbeam joint, form a folding joint, this folded bicycle is in the time of folding, unfolded device, front end cross beam and back segment crossbeam are relatively rotated, utilize the telescoping mechanism being connected between vehicle seat and vehicle frame simultaneously, vehicle seat is reduced to minimum height, in addition, also need handlebar to turn down downwards, finally, by above-mentioned comparatively loaded down with trivial details folding process, just can complete the folding of car load, and the volume after folding is larger, take up room more, as above-mentioned foldable structure is applied to existing electric motor bicycle with folding, its folding process will be more loaded down with trivial details, in a word, the foldable structure that existing folding bicycle, electric motor bicycle with folding adopt, the process of its folding and expansion is comparatively loaded down with trivial details, and the wheel after folding can not normal rotation, volume after folding is larger, therefore, when user carries after folding, need to mention whole folded bicycle, although existing bicycle can utilize some carbon fibre materials to alleviate the weight of car load, thereby reduce user's heavy burden, but, for existing electric motor bicycle with folding, larger, the inner transmission device of its vehicle frame is comparatively complicated, weight is larger, after folding, is difficult for mentioning.

Utility model content

For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of folded bicycle, and the process of its folding and expansion is simple, quick, take up room little, and after folding, front and back wheel can normally be worked after folding, carries out for user.

For achieving the above object, the utility model adopts following technical scheme:

Folded bicycle, comprises,

Vehicle frame, forms a receiving space in this vehicle frame;

Two are separately positioned on the support beam of vehicle frame front and rear, the upper end of two support beams is articulated in respectively the rear and front end, top of vehicle frame by a pivot, and support beam can around the pivot corresponding with it one the collapsed position in receiving space and between the expanded position of vehicle frame outside, rotate;

Be arranged on respectively two wheels of two support beam bottoms;

Be arranged on the handle assembly at one of them support beam top;

Seat bag, this bag is arranged on the upper end of a supporting component, and supporting component also can slide along the short transverse of vehicle frame between two support beams, and the bottom of supporting component forms an articulated section;

Two gangbar, its two medial end is all articulated with articulated section, outboard end and is articulated with respectively two support beams;

Be installed on the driven unit of vehicle frame side, this driven unit comprise be articulated in vehicle frame side the first rotatable parts, be articulated in and on one of them pivot and with the first rotatable parts, synchronize the second rotatable parts that connect and the stretcher that is articulated in the first rotatable parts periphery, on support beam corresponding to above-mentioned one of them pivot, be provided with one by the synchronous transmission component connecting of wheel of the second rotatable parts and this support beam bottom.

Supporting component comprise along chassis frame height direction extend and in establish a slot extending along chassis frame height direction sliding bar, be inserted in slot and the inserted link that can slide along the length direction of sliding bar and the Rotational Cylindrical that is articulated in sliding bar upper end, in Rotational Cylindrical, be provided with a flat hole, the cross-under that inserted link coordinates is in this flat hole; The You Bian hole, upper end of inserted link passes and is connected with seat bag, the bottom of inserted link forms a pivot part that drives Rotational Cylindrical to rotate in the time that inserted link bottom slides into sliding bar upper end, and the top ends of one of them support beam is provided with one for supporting the supporting part of the inserted link rotating; The side of inserted link is provided with the first chute extending along the length direction of inserted link, is provided with and is positioned at flat bore ends and the projection with the first chute bearing fit in Rotational Cylindrical.

A fixing ear is stretched out respectively in the both sides, upper end of sliding bar, in each fixing ear, all offer and turn hole, the hole wall that turns hole extends to form limiting stopper to turning middle part, hole, the two ends of Rotational Cylindrical form respectively one and are plugged in two and turn the block coordinating in hole and with limiting stopper, limiting stopper is quadrntnt sheet, and block is 1/2nd disks.

On vehicle frame, be fixed with the traveller for limiting sliding bar up-and-down movement stroke, on sliding bar, be provided with the second chute with traveller bearing fit.

On vehicle frame, be provided with locating part, one end of locating part is connected with vehicle frame elasticity, on the lateral wall of sliding bar, be provided with along its length extend and with the shallow slot of the other end bearing fit of locating part, the lower end of shallow slot offers the through hole of setting for the other end of locating part.

One end of locating part is that the connecting portion, the other end that are connected with vehicle frame are limiting section, and this limiting section has along the degree of freedom moving away from shallow slot or near the direction of shallow slot.

Limiting section comprises block and the first pin of being stretched out near a side of sliding bar by block and for being inserted into the second pin in through hole, the length of the first pin is greater than the length of the second pin and its, and the two staggers mutually at the Width of sliding bar, the side of sliding bar is also provided with the groove extending along its length, and the end of the first pin forms one through groove and is placed in the pressure-containing parts that pressed by inserted link top in slot.

The upper end of inserted link is provided with the latch that is circle distribution, and the bottom of seat bag is extended with sleeve pipe, and sleeve pipe pivot is placed on the upper end of inserted link, and the inwall of sleeve pipe is protruding with multiple elasticity blocks of circle distribution, latch and elasticity block interference fit.

On supporting part, be also provided with a support pad.

The both sides of vehicle frame are respectively arranged with a driven unit, the first rotatable parts are the external toothing being articulated on vehicle frame side, the second rotatable parts are the driven sprocket being articulated on one of them pivot, and the driven sprocket of two driven units is placed in respectively the two ends of this one of them pivot; Driven unit also comprises the driven gear that is articulated in vehicle frame side and engage with external toothing, the driving chain that is connected in the drive sprocket on driven gear and active connection is synchronously connected with driven gear of synchronizeing.

Vehicle frame comprises opposed two side plates, and receiving space is between biside plate; On side plate, be provided with the opening of a circle, in this opening, be fixed with a lasso, on external toothing, have one and be embedded in the portion that sets that lasso is inner and can rotate with respect to lasso, stretcher be connected to one with set the fixing swivel becket periphery of portion.

Transmission component comprises the drive link that is built in support beam and extend along the short transverse of support beam, be articulated on pivot and with driven sprocket, synchronize the transmission shaft of connection, be synchronously connected in the first bevel gear on transmission shaft, be synchronously connected in drive link upper end and the second bevel gear of engaging with the first bevel gear, be synchronously connected in the 3rd bevel gear of drive link bottom and be synchronously connected on the wheel shaft of wheel and the 4th bevel gear engaging with the 3rd bevel gear; The central axis of transmission shaft and with the central axes of the pivot of its pivot joint.

Handle assembly is arranged on the support beam corresponding with it by an engaging and disengaging gear, and this engaging and disengaging gear comprises,

The fixed cover being connected with handle assembly, its inside face forms a compression face;

The connecting element equipped with support beam, it at least comprises the shaft in a cross-under and fixed cover, forms an assemblage gap between the outside face of shaft and compression face;

Be positioned at assemblage gap and can be along the briquetting moving radially of connecting element, the outside face of briquetting forms the top pressure surface corresponding with compression face;

Be fixed on the mount pad on shaft, on this mount pad, be provided with the radially consistent slotted hole of length direction and mount pad;

The movable top-pressure part on shaft, the male cone (strobilus masculinus) of end face edge formation that this top-pressure part is relative with mount pad of being socketed in;

Ejector pin, one end of this ejector pin is fixed with briquetting, the other end is passed and formed a compression zone coordinating with male cone (strobilus masculinus) by slotted hole;

And for driving the drive element of top-pressure part along the axial-movement of shaft, between this drive element and connecting element, be also provided with one for the two fixing locking member by it.

Shaft is the hollow part of an end opening, and drive element is the cross-under of the activity axle core in shaft, has the pipe link radially extending on axle core, and this pipe link is connected with top-pressure part through the hole of dodging on shaft.

Locking member forms by being opened in the external screw thread of axle core outer surface and being positioned at the internal screw thread that shaft inside face coordinates with external screw thread.

The outboard end that axle core passes shaft is connected with a buckle closure, and this buckle closure outside face is provided with rotating spanner.

On the mount pad end face relative with top-pressure part, offer one for dodging the recess of male cone (strobilus masculinus).

In assemblage gap, be equipped with multiple briquettings, the plurality of briquetting is uniformly distributed in the outer peripheral edges of connecting element, and the cross-sectional plane of briquetting is fan-shaped, and is equipped with a spherical or columniform abaculus between the adjacent fan-shaped hypotenuse of two briquettings.

Connecting element also comprises two contiguous blocks that are separately fixed at shaft two ends, and fixed cover is between two contiguous blocks.

On shaft, be provided with a stage portion and a jump ring, stage portion place is installed with a catch, on shaft, be fixed with a Connection Block that is positioned at fixed cover inside, assemblage gap is surrounded by outside face and the compression face of Connection Block, and Connection Block and mount pad are limited between catch and jump ring.

In support beam, be articulated with a deflecting bar, the bottom of this deflecting bar is connected with the support of installing wheel, upper end is connected with connecting element.

Deflecting bar comprises by axial splines sliding block joint fixed link and portable bar, fixed link by thrust baring be arranged in support beam, portable bar is arranged in support beam by linear bearing, is also provided with a spring between the support of installing wheel and support beam.

The beneficial effects of the utility model are:

Than existing folded bicycle, the utility model only need to lift or down pressing seat bag can be realized rapid deployment or the folding of folded bicycle, and only need a hand to operate, it launches and the process of folding is simple, quick, easy operating, and the support beam after folding can be placed in vehicle frame inside, after folding, take up room little, be easy to carry, after simultaneously folded bicycle folding, front-wheel and trailing wheel can normal rotation, user not only can mention and carry, also can promote to move ahead, for user provides different carrying modes.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model folded bicycle, and shows the deployed condition of the utility model folded bicycle;

Fig. 2 is the lateral plan of the utility model folded bicycle folding state;

Fig. 3 is the end view of the utility model folded bicycle folding state;

Fig. 4 the utility model inserted link coordinates schematic diagram with sliding bar plug-in mounting;

The cooperation schematic diagram of inserted link sliding bar when Fig. 5 is the utility model deployed condition;

Fig. 6 is the structural representation of the utility model sliding bar;

The cooperation schematic diagram of inserted link sliding bar when Fig. 7 is the utility model folding state

Fig. 8 is the structural representation of the utility model locating part;

Fig. 9 is the utility model inserted link and the schematic diagram that coordinates of sleeve pipe;

Figure 10 is the structural representation of the utility model driven unit;

The structural representation of Figure 11 the utility model transmission component;

The structural representation of Figure 12 the utility model engaging and disengaging gear;

Figure 13 is the axial cutaway view of engaging and disengaging gear in Figure 12;

Figure 14 is the structural representation of Fastener in Figure 12;

Figure 15 is the schematic diagram that coordinates of mount pad and ejector pin in Figure 12;

Figure 16 is the A-A cutaway view of Figure 13, and the one of simultaneously describing the utility model engaging and disengaging gear is used state;

Figure 17 is that the another kind of engaging and disengaging gear in Figure 12 uses view;

Figure 18 is the interior views of the utility model front support beam;

Wherein: 10, vehicle frame; 11, side plate; 111, opening; 12, adapter plate; 13, lasso; 15, traveller; 200, supporting component; 210, seat bag; 211, sleeve pipe; 2111, elasticity block; 220, inserted link; 221, the first chute; 222, latch; 223, pivot part; 230, sliding bar; 231, slot; 232, shallow slot; 233, through hole; 234, fixing ear; 2341, turn hole; 2342, limiting stopper; 235, the second chute; 236, groove; 237, articulated section; 240, locating part; 241, connecting portion; 242, limiting section; 2421, the second pin; 2422, the first pin; 250, Rotational Cylindrical; 251, flat hole; 252, projection; 253, block; 30, front support beam; 31, front-wheel; 32, the first pivot; 33, gangbar; 34, spring; 40, rear support beam; 41, trailing wheel; 411, wheel shaft; 42, the second pivot; 43, supporting part; 44, support pad; 45, gangbar; 50, driven unit; 51, external toothing; 52, swivel becket; 521, extension; 53, stretcher; 54, driven gear; 55, drive sprocket; 56, driving chain; 57, driven sprocket; 60, transmission component; 61, drive link; 62, transmission shaft; 63, the first bevel gear; 64, the second bevel gear; 65, the 3rd bevel gear; 66, the 4th bevel gear; 70, handle assembly; 71, handlebar; 72, vertical; 80, engaging and disengaging gear; 810, connecting device; 811, fixed cover; 8111, compression face; 821, contiguous block; 822, contiguous block; 823, shaft; 8231, dodge hole; 8232, stage portion; 8233, jump ring; 8234, catch; 830, axle core; 831, pipe link; 832, buckle closure; 833, rotating spanner; 840, top-pressure part; 841, male cone (strobilus masculinus); 842, draw-in groove; 850, mount pad; 851, recess; 852, slotted hole; 853, clamping face; 854, fitting surface; 860, Connection Block; 870, ejector pin; 880, briquetting; 8801, top pressure surface; 881, abaculus; 90, deflecting bar; 91, fixed link; 911, connector; 92, portable bar.

Detailed description of the invention

Below, by reference to the accompanying drawings and detailed description of the invention, the utility model is described further:

Shown in Fig. 1,2,3, for a kind of folded bicycle of the present utility model, wherein Fig. 1 illustrates the deployed condition (state of normally riding) of this folded bicycle, Fig. 2 and Fig. 3 to illustrate the folding state of this folded bicycle, under folding state, this folded bicycle can be carried out riding even.

Folded bicycle of the present utility model can be the bicycle of stepping on outputting power by user's pin, can certainly be to adopt motor-driven battery-driven car, referring to Fig. 4-Figure 11 and in conjunction with shown in Fig. 1-Fig. 3, step on the bicycle of outputting power as a kind of pin, the utility model specifically comprises vehicle frame 10, front support beam 30, rear support beam 40, handle assembly 70, driven unit 50, transmission component 60, seat bag 210, supporting component 200, gangbar 33 and gangbar 45, wherein driven unit 50 is pedal drive mechanism, transmission component 60 flows to the trailing wheel 41 that is arranged on rear support beam 40 bottoms for the power that driven unit 50 is produced, as a kind of folding bicycle, referring to Fig. 2 and Fig. 3, the utility model can be folded in the receiving space being arranged on vehicle frame 10 by front support beam 30 and rear support beam 40, concrete is, vehicle frame 10 is to lay respectively at its Width both sides and side plate opposite one another 11 forms by two, above-mentioned receiving space is to be surrounded by biside plate 11, front support beam 30 is articulated in the top front end of biside plate 11 by first pivot 32 extending along vehicle frame 10 Widths, then 40 of support beams are the top rear that is articulated in biside plate 11 by second pivot 42 extending along vehicle frame 10 Widths, distance between biside plate 11 is greater than the width of front support beam 30 and rear support beam 40 just, above-mentioned front support beam 30 and rear support beam 40 can be respectively around the first pivot 32 and the second pivot 42 one the collapsed position in receiving space and between the expanded position of vehicle frame 10 outsides, rotate.In order to make folding or the expansion that front support beam 30 and rear support beam 40 can be synchronous, above-mentioned supporting component 200 can be inserted into vehicle frame 10 inside, supporting component 200 also can move with respect to vehicle frame 10 along the short transverse of vehicle frame 10 between front support beam 30 and rear support beam 40, certainly, there is not beat when the up-and-down movement in order to ensure supporting component 200, on the side plate 11 of vehicle frame 10, be also provided with stop gear, this stop gear is this usual straight line stop gear, does not here repeat, the upper end of above-mentioned supporting component 200 is for being fixedly connected with seat bag 210, bottom forms an articulated section 237, above-mentioned gangbar 33 is suitable with gangbar 45 sizes, its the two medial end is articulated with on articulated section 237, outboard end respectively with front support beam 30 and rear support beam 40 on, thus, vehicle frame 10, supporting component 200, front support beam 30, rear support beam 40, gangbar 33 and a link gear of gangbar 45 common compositions, in the time upwards pulling seat bag 210 to drive supporting component 200 upward movement, gangbar 33 and gangbar 45 increase gradually with the angle of supporting component 200, now, under the supporting role of gangbar 33 and gangbar 45, front support beam 30 and rear support beam 40 are by the external rotating towards vehicle frame 10 respectively, finally turn to above-mentioned expanded position, now, folded bicycle is in the state that can normally ride as shown in Figure 1, otherwise press wedge bag 210 downwards, front support beam 30 and rear support beam 40 respectively towards vehicle frame 10 inner rotation to receiving space, finally turn to above-mentioned folding state, certainly, no matter be in above-mentioned folding state or deployed condition, all need to utilize lockout mechanism to be fixed under corresponding state, especially in the time of riding condition, guarantee that the insufficient pressure of human body to seat bag 210 is so that front support beam 30 and rear support beam 40 have rotating degree of freedom, for this reason, the inventor adopts following structure to realize: above-mentioned supporting component 200 is designed to a kind of telescopic structure, concrete is, supporting component 200 comprise along vehicle frame 10 short transverses extend and in establish the sliding bar 230 of slot 231 extending along vehicle frame 10 short transverses, be inserted into the inserted link 220 that can slide along the length direction of sliding bar 230 in slot 231, and be articulated in the Rotational Cylindrical 250 of sliding bar 230 upper ends, above-mentioned articulated section 237 is arranged at the bottom of sliding bar 230, on vehicle frame 10, be provided with a traveller 15, the side of sliding bar 230 is provided with extends the second chute 235 along its length, traveller 15 be inserted in the second chute 235 and with the second chute 235 bearing fits, traveller 15 coordinates with the second chute 235, for limiting the stroke of sliding bar 230 with respect to vehicle frame 10 up-and-down movements, the bottom of inserted link 220 is with respect to sliding bar 230 upward slidings during to the upper end of sliding bar 230, the pivot part 223 of these inserted link 220 bottoms can drive Rotational Cylindrical 250 to rotate with respect to the top ends of sliding bar 230, concrete is, one flat hole 251 is set in Rotational Cylindrical 250, the You Bian hole, upper end 251 of inserted link 220 passes and is connected with seat bag 210, the cross-sectional plane of inserted link 220 is the square or rectangular coordinating with flat hole 251, in the time that the pivot part 223 of inserted link 220 bottoms slides into Rotational Cylindrical 250 place, pivot part 223 is coaxial with Rotational Cylindrical 250, now, rotate inserted link 220, Rotational Cylindrical 250 is along with synchronous the rotating with respect to sliding bar 230 of inserted link 220.The top ends of above-mentioned rear support beam 40 is provided with a supporting part 43, when above-mentioned inserted link 220 is upwards drawn to after upper limit position, and the inserted link 220 that rotates backward is during to horizontality, supporting part 43 is supported in the roughly below, position of centre of inserted link 220 length directions, now, supporting part 43 is as fulcrum, one end of inserted link 220 is limited on the upper end or Rotational Cylindrical 250 of sliding bar 230, the other end is positioned at seat bag 210 belows, form thus a lever construction, in the time that people is sitting on seat bag 210 one end that inserted link 220 is positioned to seat bag 210 belows and applies downward pressure, the other end of inserted link 220 is owing to being held by sliding bar 230 or Rotational Cylindrical 250, so using weight transfer on the supporting part 43 of fulcrum, and the rear support beam 40 of postponing is passed to trailing wheel 41, in the situation that human bady gravitational presses down simultaneously, seat bag 210 can not move, now folded bicycle is in normal rideable state, in order to ensure inserted link 220 maintenance level under rideable state, therefore, need to utilize stop gear to limit the stroke that above-mentioned inserted link 220 relative sliding bars 230 slide up and down, the inventor is positioned at 251 ends, flat hole one projection 252 is set in above-mentioned Rotational Cylindrical 250, on inserted link 220, offer first chute 221 extending along its length, projection 252 be inserted in the first chute 221 and with the first chute 221 bearing fits, when inserted link 220 is with respect to sliding bar 230 upward slidings during to upper limit position, projection 252 is connected to the bottom of the first chute 221, now, inserted link 220 can not continue relative sliding bar 230 upward slidings, in the time that sliding bar 230 is moved upward to upper limit position and inserted link 220 and is moved upward to upper limit position, above-mentioned Rotational Cylindrical 250 is a little more than supporting part 43, in such cases, inserted link 220 just rotates quadrntnt periderm supporting part 43 and supports, can also between above-mentioned sliding bar 230 and Rotational Cylindrical 250, position limiting structure be set, for limiting the angle that inserted link 220 rotates with respect to sliding bar 230 in the time sliding into upper limit position, further guarantee inserted link 220 in the time riding in horizontality, concrete is, a fixing ear 234 is stretched out respectively in the both sides, upper end of sliding bar 230, each fixing ear 234 is interior all to be offered one and turns hole 2341, the hole wall that turns hole 2341 extends to form a limiting stopper 2342 to turning 2341 middle parts, hole, the two ends of Rotational Cylindrical 250 arrange respectively a block 253, two blocks 253 are inserted into respectively to turn in hole 2341 and with limiting stopper 2342 and coordinate, wherein limiting stopper 2342 is quadrntnt sheet, block 253 is 1/2nd disks, this position limiting structure not only can further guarantee above-mentioned inserted link 220 in the time riding in horizontality, guarantee the stability that seat bag 210 is manned, simultaneously, limiting stopper 2342 can be arranged on to the rear side that turns hole 2341, thereby inserted link 220 only can be rotated backward, avoid inserted link 220 to rotate forward.

One support pad 44 can also be set on above-mentioned supporting part 43, this support pad 44 is for preventing the wearing and tearing of more than 220 folding of inserted link to supporting part 43, can utilize elastomeric material to make above-mentioned support pad 44 simultaneously, for the pressure of buffing pad bag 210, can also play certain cushioning effect simultaneously.

The utility model adopts said structure, can realize Quick folding or the expansion of folded bicycle, concrete is, as Fig. 1, when deployed condition shown in Fig. 4 and Fig. 5, inserted link 220 is upwards turned down to vertical state, inserted link 220 forms with sliding bar 230 telescoping mechanism that a vertical direction extends, now, press inserted link 220 downwards, projection 252 in Rotational Cylindrical 250 slides into the top ends of the first chute 221 on inserted link 220, now continue to press inserted link 220 downwards, inserted link 220 drives sliding bar 230 to move downward with respect to vehicle frame 10, the articulated section 237 of sliding bar 230 bottoms moves downward, drive the medial end of gangbar 33 and gangbar 45 to move downward along vehicle frame 10, angle between sliding bar 230 and gangbar 33 and gangbar 45 diminishes gradually, simultaneously, angle between front support beam 30 and rear support beam 40 and vehicle frame 10 diminishes gradually, until final front support beam 30 and rear support beam 40 turn to the state that is vertical, and be incorporated in the receiving space between the biside plate 11 of vehicle frame 10, make folded bicycle in folding state as shown in Figures 2 and 3, in said process, only need to utilize a manual manipulation inserted link 220 can realize the folding of folded bicycle car load, its process is simple, fast, same, under the folding state shown in Fig. 2 and Fig. 3, only need to upwards lift inserted link 220, in the time that inserted link 220 rises to upper limit position, sliding bar 230 continues along with moving on inserted link 220, gangbar 33 and gangbar 45 front support beam 30 and rear support beam 40 are strutted gradually, make it produce receiving space, in the time that sliding bar 230 moves to upper limit position, front support beam 30 and rear support beam 40 are expanded to maximum angle, turn over inserted link 220 to supporting part 43, can complete the expansion of folded bicycle car load.Can find out from said process, folded bicycle of the present utility model is in expansion or folding process, and hand of its needs can operate efficiently, and than existing folded bicycle, its folding or expansion process are time saving and energy saving.

Contriver also utilizes position limiting structure to limit the position that sliding bar 230 slides up and down, to guarantee that folded bicycle can not scatter and guarantee the safety of riding when the folding state, this position limiting structure can be the incompatible realization of close-fitting that utilizes sliding bar 230 and vehicle frame 10, also can be as shown in Figure 7 and Figure 8, one locating part 240 is set on vehicle frame 10, one end of locating part 240 is connected with vehicle frame 10 elasticity, on the lateral wall of sliding bar 230, be provided with along its length extend and with the shallow slot 232 of the other end bearing fit of locating part 240, the bottom of shallow slot 232 offers the through hole 233 of setting for the other end of locating part 240, one end of locating part 240 is that the connecting portion 241, the other end that are connected with vehicle frame 10 are limiting section 242, and limiting section 242 makes it have along the degree of freedom moving away from shallow slot 232 or near the direction of shallow slot 232 according to its elastic behavior.Above-mentioned limiting section 242 comprises block and the first pin 2422 of being stretched out near the side of sliding bar 230 by block and for being inserted into the second pin 2421 in through hole 233, the length of the first pin 2422 is greater than the length of the second pin 2421 and its, and the two staggers mutually at the Width of sliding bar 230, the side of sliding bar 230 is provided with the groove 236 extending along its length, the first above-mentioned pin 2422 forms one through groove 236 and is placed in the pressure-containing parts that pressed by inserted link 220 tops in slot 231, when folded bicycle is during in deployed condition, the second above-mentioned pin 2421 is inserted into through hole 233 inside, make the sliding bar 230 can be with respect to vehicle frame 10 up-and-down movements, safety and the stability of folded bicycle are further increased.In the time of needs folding, when inserted link 220 starts to move downward in slot 231, the pressure-containing parts of the first pin 2422 ends is pressed on inserted link 220 tops, by limiting section 242 towards flicking away from the direction of sliding bar 230, drive the second pin 2421 to depart from from through hole 233, then make sliding bar 230 possess the degree of freedom moving downward with respect to vehicle frame 10.

Normally use in order to ensure seat bag 210, the upper end of above-mentioned inserted link 220 is connected with seat bag 210 by ratchet structure, thereby can adjusting seat bag 210 with respect to the angle of inserted link 220, and seat bag 210 is fixed on to the position after adjustment, specifically referring to Fig. 7 and Fig. 9, in the upper end of inserted link 220, circle distribution has latch 222, the bottom of seat bag 210 connects a sleeve pipe 211, sleeve pipe 211 pivots are placed on the upper end of inserted link 220, and the inwall of sleeve pipe 211 is protruding with multiple elasticity blocks 2111 of circle distribution, elasticity block 2111 is strip, latch 222 and elasticity block 2111 interference fit, latch 222 coordinates with elasticity block 2111, can finely tune with respect to the rotational angle of inserted link 220 sleeve pipe 211, the precision of its adjusting depends on the quantity of latch 222, after adjusting, in the time not being subject to larger external force, sleeve pipe 211 can not relatively rotate with inserted link 220.

The utility model adopts the structure shown in Figure 10 and Figure 11 to realize and drives, wherein driven unit 50 is installed in the side of vehicle frame 10, be arranged on side plate 11, in order to dodge above-mentioned receiving space, front support beam 30 and rear support beam 40 can be housed in vehicle frame 10, to reduce the volume after folded bicycle folding; The utility model arranges two driven units 50, and for guaranteeing the balance of power output, this two driven unit 50 is respectively placed on biside plate 11, its two be synchronized with the movement.

Above-mentioned driven unit 50 specifically comprises that one is articulated in external toothing 51 on side plate 11, be articulated in the driven gear 54 engaging with external toothing 51 on side plate 11, synchronously be connected in the drive sprocket 55 on driven gear 54, be articulated in the driven sprocket 57 on the second pivot 42, and by drive sprocket 55 and the synchronous driving chain 56 connecting of driven sprocket 57, the periphery of external toothing 51 is articulated with stretcher 53, stretcher 53 on two driven units 50 mutually staggers on the circumferencial direction of the pivot center of external toothing 51, in the time trampling two stretchers 53, two driven units 50 can be synchronous rotation, finally make two driven sprockets 57 synchronously rotate.For the ease of installing, can on side plate 11, offer a circular open 111, in this opening 111, be fixed with a lasso 13, on external toothing 51, having one is embedded in lasso 13 and the portion that sets that can rotate with respect to lasso 13, that is to say, lasso 13 and the portion of setting form a structure that is similar to bearing, lasso 13 is for being regarded as the outer ring of bearing, the portion of setting is regarded as the inner ring of bearing, this structure is articulated in external toothing 51 opening 111 inside of side plate 11, set and in portion, be fixed with a swivel becket 52, the periphery of this swivel becket 52 has an extension extending radially outwardly 521, stretcher 53 is articulated in the outboard end of extension 521, extension 521 can increase the moment that stretcher 53 rotates external toothing 51 in the time of pressurized, at the medial surface of side plate 11, this is fixed with an adapter plate 12, driving chain 56, drive sprocket 55, driven gear 54 and driven sprocket 57 are all placed between adapter plate 12 and side plate 11, thereby avoid rear support beam 40 after being folded among accommodation space, interfere with driving chain 56, drive sprocket 55, driven gear 54 and driven sprocket 57.

In the utility model, above-mentioned external toothing 51 engages with driven gear 54, simultaneously, driven gear 54 is by chain drive outputting power and pass to transmission component 60, drives trailing wheel 41 to rotate by transmission component 60, so, can be in the time trampling two stretchers 53, trailing wheel 41 is rotated.But, as long as the power of stretcher 53 can be passed to transmission component 60 via driven unit 50, therefore, in the utility model, can adopt other the rotatable parts that are articulated on side plate 11 to substitute above-mentioned external toothing 51, adopt other another rotatable parts that are articulated on the second pivot 42 to substitute above-mentioned driven sprocket 57, between these two rotatable parts, can adopt gear cluster synchronously to connect, can be also to adopt other synchronous draw bail to coordinate.

Above-mentioned transmission component 60 comprises the drive link 61 that is built in rear support beam 40 and extends along the short transverse of rear support beam 40, be articulated in and on the second pivot 42 and with driven sprocket 57, synchronize the transmission shaft 62 connecting, synchronously be connected in the first bevel gear 63 on transmission shaft 62, the second bevel gear 64 that is synchronously connected in drive link 61 upper ends and engages with the first bevel gear 63, synchronously be connected in the 3rd bevel gear 65 of drive link 61 bottoms, and be synchronously connected on the wheel shaft 411 of trailing wheel 41 and the 4th bevel gear 66 engaging with the 3rd bevel gear 65, transmission shaft 62 cross-under are in the second pivot 42, its the two central axes, two above-mentioned driven sprockets 57 respectively key are connected in the both ends of transmission shaft 62, because two driven sprockets 57 are synchronous rotations, therefore, in the situation that two driven sprockets 57 rotate, its the two common transmission shaft 62 that drives rotates, the rotational power of transmission shaft 62 passes to drive link 61 by the first bevel gear 63 and coordinating of the second bevel gear 64, the rotational power of drive link 61 passes to the wheel shaft 411 of trailing wheel 41 by the cooperation of the 3rd bevel gear 65 and the 4th bevel gear 66, finally make trailing wheel 41 rotate.

Owing to adopting driven unit 50 on vehicle frame 10, at the interior installation transmission component 60 of rear support beam 40, and because rear support beam 40 rotates with respect to vehicle frame 10 around the second pivot 42, power output end (being driven sprocket 57) and transmission component 60 cohesive positions of driven unit 50 are on the transmission shaft 62 on the second pivot 42 just, therefore, in the process of folding folded bicycle, can not there is not any interference with driven unit 50 and transmission component 60 in rear support beam 40, the driving device of folded bicycle can not be affected, this is in conjunction with coordinating two driven units 50 to be arranged at respectively the ingenious structure on biside plate 11, rear support beam 40 just can be placed between biside plate 11 in the time of folding state, thereby utilize the inner space of vehicle frame 10, dwindle the volume of folded bicycle folding state, simultaneously, describe as above-mentioned, due to the second pivot 42 and the central axes of transmission shaft 62, at rear support beam 40 during in folding state, trailing wheel 41 can normal rotation, simultaneously, front-wheel 31 also can normal rotation, under folding state, folded bicycle is carried out advancing, even ride.

Above structure is the embodiment that the utility model trailing wheel 41 drives, above-mentioned transmission component 60 can be arranged in front support beam 30, accordingly transmission shaft 62 is articulated on the first pivot 32, driven unit 50 drives transmission shaft 62 to rotate, power is flowed to front-wheel 31 through transmission shaft 62, form the bicycle that front-wheel 31 drives.

While it should be noted that the utility model as a kind of battery-driven car, it can, without above-mentioned driven unit 50 and transmission component 60 are set, only need to arrange the drive motor that drives front-wheel 31 or trailing wheel 41 to rotate at front support beam 30 or rear support beam 40 inside.Certainly, also can be the drive motor rotating at the built-in driving front-wheel 31 of front support beam 30, the pin that the rotation of trailing wheel 41 still forms by above-mentioned driven unit 50 and transmission component 60 is stepped on actuating unit and is driven, and so forming can the electronic hybrid power folded bicycle that can trample again motion.

In order to adapt to the folding of car load, above-mentioned handle assembly 70 can be to be rotatably connected on front support beam 30, in conjunction with Fig. 1 and specifically referring to Figure 12-Figure 17, handle assembly 70 forms by handlebar 71 with vertical 72, be articulated on front support beam 30 by an engaging and disengaging gear 80 vertical 72, this engaging and disengaging gear 80 comprises and vertical 72 fixed cover that are connected 811, the shaft 823 being connected with front support beam 30, multiple briquettings 880, mount pad 850, top-pressure part 840, with briquetting 880 multiple ejector pins 870 one to one, and axle core 830, wherein the external stability of fixed cover 811 has a connecting device 810, this connecting device 810 will be for being fixedly connected with fixed cover 811 vertical 72, the inside face of fixed cover 811 forms a compression face 8111, this compression face 8111 is surrounded on the periphery of shaft 823, the part that shaft 823 is the connecting element that is connected with front support beam 30, between the outside face of above-mentioned shaft 823 and compression face 8111, form an annular assemblage gap, and, the central axes of vertical 72 pivots center with respect to front support beam 30 and shaft 823, above-mentioned multiple briquettings 880 are embedded in assemblage gap and are uniformly distributed in the outer peripheral edges of shaft 823, and have shaft 823 in the radial direction motion degree of freedom, the outside face of briquetting 880 forms a top pressure surface 8801 corresponding with compression face 8111, above-mentioned compression face 8111 and top pressure surface 8801 can be to be processed to rough surface, when in the time that briquetting 880 radially outward moves, top pressure surface 8801 contacts with compression face 8111, can avoid fixed cover 811 and briquetting 880 relative motions, the two relatively rotates to prevent it.It can also be the Connection Block 860 that is positioned at fixed cover 811 in the external stability one of above-mentioned shaft 823, above-mentioned assemblage gap is surrounded by the outside face of Connection Block 860 and compression face 8111, briquetting 880 is placed between Connection Block 860 and compression face 8111, be the equal of to have increased the diameter of shaft 823 with compression face 8111 corresponding positions by Connection Block 860, briquetting 880 is as stop component, its thickness can utilize the radius of Connection Block 860 to offset, thus can so that above-mentioned briquetting 880 set installation.

Being socketed on shaft 823 of top-pressure part 840 activities, the end face that this top-pressure part 840 is relative with mount pad 850 forms a male cone (strobilus masculinus) 841, mount pad 850 is fixed on shaft 823, on this mount pad 850, be provided with along the multiple slotted holes 852 of its circumferencial direction well-distributed, the length direction of slotted hole 852 is radially consistent with mount pad 850, the plurality of slotted hole 852 is corresponding one by one with briquetting 880, ejector pin 870 is respectively by equipped, concrete corresponding briquetting 880 and slotted hole 852, and the fixing cross-under in one end of ejector pin 870 is on briquetting 880, its other end is through slotted hole 852 and form a compression zone, and this compression zone is connected on male cone (strobilus masculinus) 841, axle core 830 is for pulling the axle upward movement of top-pressure part 840 at shaft 823, in the time that axle core 830 drives top-pressure part 840 to move towards the direction of close mount pad 850, male cone (strobilus masculinus) 841 pushes up the compression zone of the pin 870 that bears down on one, make ejector pin 870 along the length of slotted hole 852 towards movement outside, thereby drive the top pressure surface 8801 of briquetting 880 to move towards the direction near compression face 8111, otherwise, axle core 830 drives top-pressure part 840 when moving away from the direction of mount pad 850, the top pressure surface 8801 of briquetting 880 is towards moving away from the direction of compression face 8111, that is to say, above-mentioned male cone (strobilus masculinus) 841 coordinates with the compression zone of ejector pin 870, can change moving axially of top-pressure part 840 into each briquetting 880 move radially.

Above-mentioned shaft 823 is the hollow part of an end opening, the cross-under of axle core 830 activities is in shaft 823, on axle core 830, there is the pipe link 831 radially extending along it, on shaft 823, be provided with and dodge hole 8231, pipe link 831 extend in draw-in groove default on top-pressure part 840 842 through dodging hole 8231, that is to say, utilize pipe link 831 that axle core 830 is linked together, make the top-pressure part 840 can be along with axle core 830 moving axially along shaft 823; In addition, outside face at above-mentioned axle core 830 also offers external screw thread, the inside face of shaft 823 offers the internal screw thread coordinating with it, rotating shaft core 830, can realize axle core 830 moving axially with respect to shaft 823, axle core 830 can also be locked in to its final mobile position, thereby make top-pressure part 840 remain on relevant position, in such cases, can realize the locking of briquetting 880 positions, lock briquetting 880, make the top pressure surface 8801 on briquetting 880 keep compressing with compression face 8111, thereby briquetting 880 and fixed cover 811 are locked.

In such scheme of the present utility model, shaft 823 and be fixed on its two ends contiguous block 821, contiguous block 822 forms connecting element, connecting element is connected with front support beam 30, fixed cover 811 is to be connected with handle vertical 72 by connecting device 810, in the time will turning to relevant position vertical 72, be rotated in the forward axle core 830, drive each ejector pin 870 outwards to move along the length direction of slotted hole 852, thereby drive each briquetting 880 outwards to move, after the top pressure surface 8801 on briquetting 880 fully contacts with the compression face 8111 on fixed cover 811, axle core 830 stops the rotation, now, be not subject under any external force, due to the locking of internal screw thread and external screw thread, make to produce certain pressure between top pressure surface 8801 and compression face 8111, simultaneously, ejector pin 870 has limited the rotate degree of freedom of axial region 823 circumferencial directions motions of briquetting 880, therefore, can not rotate with respect to briquetting 880 at fixed cover 811 in such cases, thereby vertical 72 front support beams 30 will be locked, this locking is not only applicable to vertical 72 in folding state, be equally applicable to the deployed condition in normally riding vertical 72.When needs unclamp vertical 72 time, contrarotation axle core 830, compression face 8111 unclamps with top pressure surface 8801, makes briquetting 880 upwards have certain degree of freedom in the footpath of shaft 823.

Certainly, the locking mechanism of above-mentioned employing external screw thread and internal screw thread lock shaft core 830 and shaft 823 can be also to adopt other locking members to substitute, as long as it can be locked in axially movable axle core 830 on shaft 823, can certainly be that axle core 830 is locked in to contiguous block 821 or contiguous block 822.Above-mentioned axle core 830 is as driving the axially movable parts of top-pressure part 840, and it also can adopt other can drive the axially movable parts of top-pressure part 840 to substitute.

For the ease of operation, the outboard end that passes shaft 823 at above-mentioned axle core 830 is connected with a buckle closure 832, and the outside face of this buckle closure 832 is provided with a rotating spanner 833, when operation, and rotation rotating spanner 833.

On mount pad 850 end face relative with top-pressure part 840, offer a recess 851 of dodging male cone (strobilus masculinus) 841, the other end of mount pad 850 forms a fitting surface 854 of fitting with Connection Block 860, forms a clamping face 853 in the bottom of recess 851.The circumferential surface of recess 851 forms an inner conical surface coordinating with male cone (strobilus masculinus) 841, so, in the time that top-pressure part 840 moves towards mount pad 850, it can first push up the pin 870 that bears down on one, 850 of mount pads can not interfered top-pressure part 840, meanwhile, utilize recess 851 to dodge top-pressure part 840, also can reduce fully the axial dimension of total, make total meet that existing folding car structure is small and exquisite, the requirement of good looking appearance.

For fear of stressed excessive, make briquetting 880 drive ejector pin 870 to rotate to make ejector pin 870 that the phenomenon of bending occur, above-mentioned briquetting 880 is set to cross-sectional plane and is fan-shaped structure, between adjacent two briquettings 880, be provided with a spherical or columniform abaculus 881, concrete, abaculus 881 is between the fan-shaped hypotenuse of two briquettings 880.

On shaft 823, be also provided with a stage portion 8232 and one and stage portion 8232 tool jump ring 8233 at regular intervals, jump ring 8233 tops are pressed on above-mentioned clamping face 853, the outside of shaft 823 is also provided with a catch 8234 that is positioned at stage portion 8232 places, above-mentioned Connection Block 860 and mount pad 850 are fixed between catch 8234 and jump ring 8233 by clamping, and this structure can facilitate installation to greatest extent.

In said structure of the present utility model, by moving axially of top-pressure part 840, change moving radially of briquetting 880 into, make the top pressure surface 8801 on briquetting 880 fit and compress with the compression face 8111 in fixed cover 811, it can realize the locking in the time of folded state or deployed condition vertical 72 without paying larger external force; Meanwhile, the utility model can be installed in and rotate and hold inside vertical 72, can not affect the outward appearance of folded bicycle, meets the requirement small and exquisite, attractive in appearance of existing folded bicycle profile.

While being rotated in order to ensure handlebar 71, front-wheel 31 turns to according to the rotation of handlebar 71, shown in Figure 18, connect a deflecting bar 90 at the interior pivot of front support beam 30, the upper end of this deflecting bar 90 is stretched out by the top of front support beam 30, bottom is stretched out by the bottom of front support beam 30, and deflecting bar 90 upper ends are passed through above-mentioned engaging and disengaging gear 80 and are connected vertical 72, that is to say, shaft 823 and be fixed on its two ends contiguous block 821, it is to be fixedly connected with the connector 911 of deflecting bar 90 upper ends that contiguous block 822 forms connecting element, the bottom of deflecting bar 90 is fixed with the support that front-wheel 31 is installed, so, in the time rotating handlebar 71, front-wheel 31 rotates thereupon.Above-mentioned deflecting bar 90 can be set to two sections of socket mutually, these two sections are specially fixed link 91 and portable bar 92, fixed link 91 is arranged on the inwall of front support beam 30 by two thrust barings, 92 of portable bars are to be arranged in front support beam 30 by axis bearing, fixed link 91 and portable bar 92 are by axial splines bearing fit, the telescoping mechanism that its two formation can synchronously be rotated, between the support of installation front-wheel 31 and front support beam 30, a spring 34 is also set, this spring 34 is as buffer unit, with the common damping that forms front-wheel 31 of above-mentioned telescopic deflecting bar 90.Certainly, this damping is equally applicable to trailing wheel 41, can be specifically that drive link 61 is set to the telescoping mechanism that can synchronously rotate, and utilizes spring as buffer unit.

To one skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the utility model claim.

Claims (22)

1. folded bicycle, is characterized in that, comprises,

Vehicle frame, forms a receiving space in this vehicle frame;

Two are separately positioned on the support beam of vehicle frame front and rear, the upper end of two support beams is articulated in respectively the rear and front end, top of vehicle frame by a pivot, and support beam can around the pivot corresponding with it one the collapsed position in receiving space and between the expanded position of vehicle frame outside, rotate;

Be arranged on respectively two wheels of two support beam bottoms;

Be arranged on the handle assembly at one of them support beam top;

Seat bag, this bag is arranged on the upper end of a supporting component, and supporting component also can slide along the short transverse of vehicle frame between two support beams, and the bottom of supporting component forms an articulated section;

Two gangbar, its two medial end is all articulated with articulated section, outboard end and is articulated with respectively two support beams;

Be installed on the driven unit of vehicle frame side, this driven unit comprise be articulated in vehicle frame side the first rotatable parts, be articulated in and on one of them pivot and with the first rotatable parts, synchronize the second rotatable parts that connect and the stretcher that is articulated in the first rotatable parts periphery, on support beam corresponding to above-mentioned one of them pivot, be provided with one by the synchronous transmission component connecting of wheel of the second rotatable parts and this support beam bottom.

2. folded bicycle as claimed in claim 1, it is characterized in that, supporting component comprise along chassis frame height direction extend and in establish a slot extending along chassis frame height direction sliding bar, be inserted in slot and the inserted link that can slide along the length direction of sliding bar and the Rotational Cylindrical that is articulated in sliding bar upper end, in Rotational Cylindrical, be provided with a flat hole, the cross-under that inserted link coordinates is in this flat hole; The You Bian hole, upper end of inserted link passes and is connected with seat bag, the bottom of inserted link forms a pivot part that drives Rotational Cylindrical to rotate in the time that inserted link bottom slides into sliding bar upper end, and the top ends of one of them support beam is provided with one for supporting the supporting part of the inserted link rotating; The side of inserted link is provided with the first chute extending along the length direction of inserted link, is provided with and is positioned at flat bore ends and the projection with the first chute bearing fit in Rotational Cylindrical.

3. folded bicycle as claimed in claim 2, it is characterized in that, a fixing ear is stretched out respectively in the both sides, upper end of sliding bar, in each fixing ear, all offer and turn hole, the hole wall that turns hole extends to form limiting stopper to turning middle part, hole, the two ends of Rotational Cylindrical form respectively one and are plugged in two and turn the block coordinating in hole and with limiting stopper, and limiting stopper is quadrntnt sheet, and block is 1/2nd disks.

4. folded bicycle as claimed in claim 2, is characterized in that, is fixed with the traveller for limiting sliding bar up-and-down movement stroke on vehicle frame, is provided with the second chute with traveller bearing fit on sliding bar.

5. folded bicycle as claimed in claim 2, it is characterized in that, on vehicle frame, be provided with locating part, one end of locating part is connected with vehicle frame elasticity, on the lateral wall of sliding bar, be provided with along its length extend and with the shallow slot of the other end bearing fit of locating part, the lower end of shallow slot offers the through hole of setting for the other end of locating part.

6. folded bicycle as claimed in claim 5, is characterized in that, one end of locating part is that the connecting portion, the other end that are connected with vehicle frame are limiting section, and this limiting section has along the degree of freedom moving away from shallow slot or near the direction of shallow slot.

7. folded bicycle as claimed in claim 6, it is characterized in that, limiting section comprises block and the first pin of being stretched out near a side of sliding bar by block and for being inserted into the second pin in through hole, the length of the first pin is greater than the length of the second pin and its, and the two staggers mutually at the Width of sliding bar, the side of sliding bar is also provided with the groove extending along its length, and the end of the first pin forms one through groove and is placed in the pressure-containing parts that pressed by inserted link top in slot.

8. the folded bicycle as described in claim 2-7 any one, it is characterized in that, the upper end of inserted link is provided with the latch that is circle distribution, the bottom of seat bag is extended with sleeve pipe, sleeve pipe pivot is placed on the upper end of inserted link, and the inwall of sleeve pipe is protruding with multiple elasticity blocks of circle distribution, latch and elasticity block interference fit.

9. folded bicycle as claimed in claim 8, is characterized in that, is also provided with a support pad on supporting part.

10. folded bicycle as claimed in claim 1, it is characterized in that, the both sides of vehicle frame are respectively arranged with a driven unit, the first rotatable parts are the external toothing being articulated on vehicle frame side, the second rotatable parts are the driven sprocket being articulated on one of them pivot, and the driven sprocket of two driven units is placed in respectively the two ends of this one of them pivot; Driven unit also comprises the driven gear that is articulated in vehicle frame side and engage with external toothing, the driving chain that is connected in the drive sprocket on driven gear and active connection is synchronously connected with driven gear of synchronizeing.

11. folded bicycles as claimed in claim 10, is characterized in that, vehicle frame comprises opposed two side plates, and receiving space is between biside plate; On side plate, be provided with the opening of a circle, in this opening, be fixed with a lasso, on external toothing, have one and be embedded in the portion that sets that lasso is inner and can rotate with respect to lasso, stretcher be connected to one with set the fixing swivel becket periphery of portion.

12. folded bicycles as claimed in claim 10, it is characterized in that, transmission component comprises the drive link that is built in support beam and extend along the short transverse of support beam, be articulated on pivot and with driven sprocket, synchronize the transmission shaft of connection, be synchronously connected in the first bevel gear on transmission shaft, be synchronously connected in drive link upper end and the second bevel gear of engaging with the first bevel gear, be synchronously connected in the 3rd bevel gear of drive link bottom and be synchronously connected on the wheel shaft of wheel and the 4th bevel gear engaging with the 3rd bevel gear; The central axis of transmission shaft and with the central axes of the pivot of its pivot joint.

13. folded bicycles as claimed in claim 1, is characterized in that, handle assembly is arranged on the support beam corresponding with it by an engaging and disengaging gear, and this engaging and disengaging gear comprises,

The fixed cover being connected with handle assembly, its inside face forms a compression face;

The connecting element equipped with support beam, it at least comprises the shaft in a cross-under and fixed cover, forms an assemblage gap between the outside face of shaft and compression face;

Be positioned at assemblage gap and can be along the briquetting moving radially of connecting element, the outside face of briquetting forms the top pressure surface corresponding with compression face;

Be fixed on the mount pad on shaft, on this mount pad, be provided with the radially consistent slotted hole of length direction and mount pad;

The movable top-pressure part on shaft, the male cone (strobilus masculinus) of end face edge formation that this top-pressure part is relative with mount pad of being socketed in;

Ejector pin, one end of this ejector pin is fixed with briquetting, the other end is passed and formed a compression zone coordinating with male cone (strobilus masculinus) by slotted hole;

And for driving the drive element of top-pressure part along the axial-movement of shaft, between this drive element and connecting element, be also provided with one for the two fixing locking member by it.

14. folded bicycles as claimed in claim 13, it is characterized in that, shaft is the hollow part of an end opening, and drive element is the cross-under of the activity axle core in shaft, on axle core, have the pipe link radially extending, this pipe link is connected with top-pressure part through the hole of dodging on shaft.

15. folded bicycles as claimed in claim 14, is characterized in that, locking member forms by being opened in the external screw thread of axle core outer surface and being positioned at the internal screw thread that shaft inside face coordinates with external screw thread.

16. folded bicycles as claimed in claim 15, is characterized in that, the outboard end that axle core passes shaft is connected with a buckle closure, and this buckle closure outside face is provided with rotating spanner.

17. folded bicycles as claimed in claim 13, is characterized in that, on the mount pad end face relative with top-pressure part, offer one for dodging the recess of male cone (strobilus masculinus).

18. folded bicycles as claimed in claim 13, it is characterized in that, in assemblage gap, be equipped with multiple briquettings, the plurality of briquetting is uniformly distributed in the outer peripheral edges of connecting element, the cross-sectional plane of briquetting is fan-shaped, and is equipped with a spherical or columniform abaculus between the adjacent fan-shaped hypotenuse of two briquettings.

19. folded bicycles as claimed in claim 13, is characterized in that, connecting element also comprises two contiguous blocks that are separately fixed at shaft two ends, and fixed cover is between two contiguous blocks.

20. folded bicycles as claimed in claim 13, it is characterized in that, on shaft, be provided with a stage portion and a jump ring, stage portion place is installed with a catch, on shaft, be fixed with a Connection Block that is positioned at fixed cover inside, assemblage gap is surrounded by outside face and the compression face of Connection Block, and Connection Block and mount pad are limited between catch and jump ring.

21. folded bicycles as claimed in claim 13, is characterized in that, are articulated with a deflecting bar in support beam, and the bottom of this deflecting bar is connected with the support of installing wheel, upper end is connected with connecting element.

22. folded bicycles as claimed in claim 21, it is characterized in that, deflecting bar comprises by axial splines sliding block joint fixed link and portable bar, fixed link by thrust baring be arranged in support beam, portable bar is arranged in support beam by linear bearing, is also provided with a spring between the support of installing wheel and support beam.