CN206243354U - Folding tricycle - Google Patents

Abstract

The utility model discloses folding tricycle, foresteerage gear including being provided with a front-wheel, the pivotally connected two parallel connecting rods of supporting sleeve in foresteerage gear, two connecting rod gudgeons connect actuator, and the pivotally connected Rear frame for being provided with trailing wheel of actuator simultaneously passes through pull bar connection cushion branch pipe, the pivotally connected Rear frame of cushion branch pipe, during expansion, front-wheel is misaligned with trailing wheel, and connecting rod keeps angle with supporting sleeve, and Rear frame is vertical with the standpipe of cushion branch pipe；During folding, front-wheel is parallel with trailing wheel and partially overlaps, and plane and plane-parallel that their minimum point is formed, connecting rod are parallel with the standpipe of supporting sleeve, Rear frame and cushion arms parallel or forms wedge configuration.Three wheels are in parastate and in the absence of difference in height after the utility model is folded, and are easy to carry in a folded configuration, and the folding effect of tricycle more preferably, occupies little space, and moulded attractive in appearance, in the absence of prominent part, security is more preferably.

Description

Folding tricycle

Technical field

The utility model is related to a kind of tricycle, especially a kind of folding tricycle.

Background technology

With the continuous improvement of people's quality of life, energy-saving and environmental protection, light, diversity for the vehicles, complementarity And the demand of aesthetic property is also more and more urgent.

Electric power is widely used in production and lives as a kind of environmental protection, cleaning, the conversion ratio important energy high, electric motor car As green rising industry, as the relatively low short-distance and medium-distance traffic work of a kind of energy-conserving and environment-protective, convenient, use cost of going on a journey Tool, with larger mass foundation and market prospects.

And tricycle, as the term suggests, including three electric motor cars or bicycle or automobile of wheel, because it is relative to two wheels The many wheels of car are contacted with ground, are being easy to produce the wet-skid road surface of sideslip, have very unique stability advantage, significantly Reduce riding personnel to break away the possibility fallen down, under complicated landform ground surface environment, driving safety has compared with two wheeler and significantly carries Rise；With the arrival of China human mortality aging, the trip of the elderly and the disabled needs, therefore storage battery tricycle turns into special energy Adapt to one of best vehicles of the elderly and the disabled.The most structure of tricycle on the market is two, a front-wheel at present Trailing wheel, as shown in Chinese patent CN2012100896528 and CN2014800145526.

But existing tricycle volume is big, be unfavorable for placement, therefore in the market also designs a part of foldable three Wheel car, such as Chinese patent application of Application No. 2013800540944 and Application No. 2009101311581, but these can Also there are some obvious defects in folding tricycle,

For example, the folding tricycle in above-mentioned two patent application, after folding, front-wheel had a certain degree with trailing wheel or Front wheels and rear wheels have difference in height, therefore inconvenience is carried out in a folded configuration, because electro-tricycle general structure is big, Therefore inconvenience is carried.

Meanwhile, such as 2013800540944 patent application, the complicated integral structure of tricycle, after folding, the space of occupancy Still it is larger, and due to no effective supporting construction, therefore be not easy to put, also there are other some foldable structures certainly, Integrated level, fitness between part be not high, causes folding effect undesirable.

Further, since the whole fold mechanism of above-mentioned patent is complex, folds and operation multiple parts are needed when launching Could realize, thus fold, launch it is cumbersome, process is more, time and effort consuming, operability it is poor.

Finally, due to the presence of fold mechanism, the multiple parts in fold mechanism often have certain activity, therefore In the deployed state, it is desirable to have certain fixed structure will not occur unexpected activity to ensure each part, cause security incident.

Utility model content

The purpose of this utility model is exactly to solve the above-mentioned problems in the prior art, there is provided a kind of structure letter It is single, operate easily folding tricycle.

The purpose of this utility model is achieved through the following technical solutions：

Folding tricycle, including the foresteerage gear of a front-wheel is provided with, the support set in the foresteerage gear Pivotally connected two parallel connecting rods are managed, two connecting rod gudgeons connect actuators, and the actuator is pivotally connected symmetrically to be set It is equipped with two Rear frames of trailing wheel and passes through pull bar connection cushion branch pipe, the pivotally connected Rear frame of cushion branch pipe,

Under deployed condition, the front-wheel is parallel with the plane where trailing wheel, plane and water that their minimum point is formed Plane is parallel and front-wheel is misaligned with trailing wheel, and the connecting rod keeps angle, the Rear frame and cushion branch pipe with supporting sleeve Standpipe is vertical；

Under folded state, the front-wheel is parallel with three planes where trailing wheel, the plane that their minimum point is formed Partially overlapped with trailing wheel with plane-parallel and front-wheel, the connecting rod is parallel with supporting sleeve, the Rear frame and cushion branch pipe Standpipe it is parallel or formed wedge configuration.

Preferably, described folding tricycle, wherein：The foresteerage gear also includes to turn in the supporting sleeve The steering tube for setting dynamicly, the upper end of the steering tube is provided with tap handle, and its lower end is provided with front-wheel mounting bracket, it is described before The furcation for taking turns mounting bracket connects the front-wheel.

Preferably, described folding tricycle, wherein：Connector, the company are additionally provided with the supporting sleeve outer wall The 4th pivot hole and the 5th pivot hole with difference in height are provided with fitting, the 4th pivot hole at higher position to institute State the distance of the distance less than the 5th pivot hole to the supporting sleeve of supporting sleeve.

Preferably, described folding tricycle, wherein：Position-limit mechanism, the limit are additionally provided between two connecting rods Position mechanism includes the upper clamping block being arranged in upper connecting rod and the lower clamping block being arranged on the lower link,

Under deployed condition, the upper clamping block is spacing with lower clamping block clamping；

Under folded state, the upper clamping block is separated with lower clamping block.

Preferably, described folding tricycle, wherein：First pivot hole of the actuator including distribution triangular in shape, Second pivot hole and the 3rd pivot hole, the distance between first pivot hole and the second pivot hole are equal to the 4th pivot hole And the 5th the distance between pivot hole, one end of the upper connecting rod is connected at first pivot hole, at second pivot hole One end and the Rear frame of the lower link are connected, one end of the pull bar is connected at the 3rd pivot hole.

Preferably, described folding tricycle, wherein：The provided at one of the pull bar connects the actuator, the drawing The pivotally connected cushion branch pipe of the other end of bar, and the pull bar and the position of the pivot connection point of cushion branch pipe are higher than described The position of the pivot connection point of cushion branch pipe and Rear frame.

Preferably, described folding tricycle, wherein：It is provided with the Rear frame for described in deployed condition support The support bar of cushion branch pipe.

Preferably, described folding tricycle, wherein：The two of the Rear frame position pivotally connected with the actuator Side is symmetrically arranged with lift-pull handle.

Preferably, described folding tricycle, wherein：The actuator is locked and released by locking relieving mechanism Put, set on the lock piece and the actuator of the locking relieving mechanism including the pivotally connected Rear frame with it is described The draw-in groove of lock piece matching, the lock piece connection drives the drive mechanism and resetting-mechanism of its upset.

Preferably, described folding tricycle, wherein：The drive mechanism includes at least one set of activation button and installation Cover, the activation button can stretch in the mounting cup and it passes through connecting rod and connects the lock piece；The resetting-mechanism The torsion spring or one end being disposed at the pivot connection point of the lock piece and Rear frame are fixed in the activation button, separately One end is fixed on the spring on the mounting cup.

The beneficial effects of the utility model are mainly reflected in：

The utility model deft design, simple structure, due to folding after, three wheel still in parastate, and front and back wheel In the absence of difference in height, therefore, it is possible to realize the implementation of vehicle by lift-pull handle, it is easy to carry out removing for vehicle in a folded configuration Fortune, and because the relative position of each part after folding is compacter, therefore the folding effect of tricycle is more preferable, takes up room Small, moulded attractive in appearance, in the absence of prominent part, security is more preferably.

The utility model is centered on actuator and drives multiple parts pivotally connected with it to link, so as to realize vehicle Folding, the close relation of each part, linkage be strong, and after folding, agent structure takes horizontal space mainly in axial distribution Small, further, since foldable structure is ingenious, therefore folding and deployment step are few, simple to operate, are easy to use.

By the structure setting of connector, ensure that folded state lower link is parallel with supporting sleeve, so as to ensure it Between compactedness.

Using the locking relieving mechanism of push button, the release of actuator can be quickly realized, so as to easily realize vehicle Folding, and when launching, need to only exert a force makes front wheels and rear wheels separately realize oneself of actuator using locking relieving mechanism Dynamic locking, launches simple to operate, and the combination type spacing mechanism between linking rod, is fixed so as to complete vehicle structure is effectively ensured Stability, improve security.

Brief description of the drawings

Fig. 1 is folding tricycle deployed condition sectional view of the present utility model；

Fig. 2 is folding tricycle deployed condition stereogram of the present utility model；

Fig. 3 is folding tricycle folded inside mechanism stereogram of the present utility model；

Fig. 4 is the enlarged drawing of a-quadrant in Fig. 3；

Fig. 5 is folding tricycle folded state stereogram of the present utility model；

Fig. 6 is folding tricycle folded state sectional view of the present utility model.

Specific embodiment

The purpose of this utility model, advantage and feature, will carry out figure by the non-limitative illustration of preferred embodiment below Show and explain.These embodiments are only the prominent examples for applying technical solutions of the utility model, all to take equivalent or wait Effect conversion and the technical scheme that is formed, all fall within the utility model it is claimed within the scope of.

The utility model discloses a kind of folding tricycle, as shown in accompanying drawing 1- accompanying drawings 3, including foresteerage gear 3, institute Foresteerage gear 3 is stated including supporting sleeve 31, rotatably arranged with having steering tube 32, the steering in the supporting sleeve 31 The upper end of pipe 32 is provided with tap handle 33, at least one brake hand is provided with the tap handle 33 140, the steering The lower end of pipe 32 is provided with front-wheel mounting bracket 34, and the furcation of the front-wheel mounting bracket 34 connects the front-wheel by front axle 110, it is additionally provided with front wheel guard 36 on the front-wheel mounting bracket 34.

Certainly in other embodiments, the tap handle 33 can also with can be stretched in the supporting sleeve 31 and with The telescoping tube connection that the steering tube is tightened or loosened.

Connector 35 is additionally provided with the outer wall of the supporting sleeve 31, the connector 35 includes channel-shaped body, described The 4th pivot hole 351 and the 5th pivot hole 352 with difference in height are provided with body, the 4th pivot at higher position Distance distance less than fiveth pivot hole 352 to the supporting sleeve 31 of the hole 351 to the supporting sleeve 31.

Distinguish pivotally connected one as shown in accompanying drawing 1, accompanying drawing 3, at the 4th pivot hole 351 and the 5th pivot hole 352 to draw One end of bar 2, two pull bars 2（Upper connecting rod 21 and lower link 22）The pivotally connected actuator 1 of the other end, and institute State upper connecting rod 21 and lower link 22 remains parastate, the one end pivotally connected with the actuator 1 of the upper connecting rod 21 Be additionally provided with the 6th pivot hole, one end of the pivotally connected follower lever 150 of the 6th pivot hole, the follower lever 150 it is another Provided at one connects fixture 160 fixed in the Rear frame 4, is provided with the fixture 160 and draws connection for pivot The pivot attachment apertures of the follower lever 150（Not shown in figure）.

Also, as shown in accompanying drawing 1, accompanying drawing 6, position-limit mechanism 7, institute are additionally provided between the upper connecting rod 21 and lower link 22 State position-limit mechanism 7 include being arranged in the upper connecting rod 21 and towards the lower link 22 upper clamping block 71 and be arranged at institute The lower clamping block 72 stated on lower link 22 and matched with the upper clamping block 71, the upper clamping block 71 is cuboid or square Square, the lower connecting block 72 is step-like square, and the distance of the upper clamping block 71 to the 4th pivot hole 351 is big In the distance of the lower clamping block 72 to the 5th pivot hole 352,

Under deployed condition, the upper clamping block 71 is spacing with the clamping of lower clamping block 72；

Under folded state, the upper clamping block 71 is separated with lower clamping block 72.

In addition, in the present embodiment, as shown in Figure 1, the actuator 1 is preferably fillet triangular cube body, and it includes one Individual upper plane and positioned at the upper plane both sides and the two rounded triangle sides vertical with the upper plane, described in two Rounded triangle side is preferably equilateral or isosceles rounded triangle, and gap between them is more than the He of the upper connecting rod 21 The width of lower link 21, certainly in other embodiments, the actuator 1 can also be other feasible shapes, herein no longer Repeat.

The first pivot hole 11, are provided with two the three of rounded triangle side fillet positions of the actuator 1 Two pivot holes 12 and the 3rd pivot hole 13, the height of the pivot hole 13 of first pivot hole 11 and the 3rd is higher than second pivot Hole 12, meanwhile, the distance between rear pivot shaft hole 12 of first pivot hole 11 and second is equal to the 4th pivot hole 351 and the The distance between five pivot holes 352, connect one end of the upper connecting rod 21, second pivot hole at first pivot hole 11 One end of the lower link 22 is connected at 12, so that the upper connecting rod 21 and lower link 22 remain parastate.

Further, as shown in Figure 1, the actuator 1 is also connected with Rear frame 4, the Rear frame 4 and the actuator 1 The basculating movement of one end of connection and descending motion drive the actuator 1 to be synchronized with the movement, so the actuator 1 drive it is described The relatively described foresteerage gear 3 of connecting rod 2 is overturn and is driven the relative Rear frame 4 of the cushion branch pipe 5 linked with it Overturn.

Specifically, as shown in accompanying drawing 1- accompanying drawings 3, it is also pivotally connected described at the second pivot hole 12 on the actuator 1 Rear frame 4 includes the grid-like framework 41 of specular, two nets near one end of the front-wheel 110, the Rear frame 4 Lattice frames 41 are connected and between them with the gap for installing the actuator 1 and cushion branch pipe 5 by connecting rod 42；Two grid-like frameworks 41 are away from being respectively provided with a trailing wheel 120 and rear catch on the outside of one end of the actuator 1 Mud plate 45；It is additionally provided with the Rear frame 4 from the Rear frame 4 and one end that actuator 1 is connected and extends to the cushion branch The U-shaped position-limiting cover 43 at the rear of pipe 5 and the battery settling groove 44 positioned at the rear of cushion branch pipe 5.

One end of pivotally connected pull bar 6 at the 3rd pivot hole 13 on the actuator 1, the pull bar 6 it is another End pivoting connects the cushion branch pipe 5, and the cushion branch pipe 5 is pivotally connected in the Rear frame 4.

Detailed, as shown in accompanying drawing 1, accompanying drawing 6, the cushion branch pipe 5 includes standpipe 51, the first pivot connection 52 and the Two pivot connections 53, a telescopic cushion connecting rod and the cushion connecting rod of being provided with is by lock in the standpipe 51 Tight part is locked and unclamped with the standpipe 51, and cushion 130 is provided with the top of the cushion connecting rod；Described first is pivotally connected Portion 52 is located at the lower half of the standpipe 51 and higher than second pivot connection 53, and second pivot connection 53 is located at In the bottom sidewall of the standpipe 51 and perpendicular setting, the pivotally connected pull bar 6 in the first pivot connection 52 it is another The pivot connection point of one end, the pivotally connected Rear frame 4 in the pivot connection 53, therefore the pull bar 6 and cushion branch pipe 5 Position of the position higher than the pivot connection point of the cushion branch pipe 5 and Rear frame 4, consequently facilitating when folding, pulling the seat The relatively described Rear frame 4 of advance expenditure pipe 5 is overturn.

During due to deployed condition, as shown in Figure 1, the standpipe 51 in the cushion branch pipe 5 is in the Rear frame 4 and hangs down Straight state, and because cushion branch pipe 5 needs to bear the gravity of driver, therefore it is necessary to ensure there are enough enabling capabilities, and The cushion branch pipe 5 and Rear frame 4 are only had pivotally connected place and are supported by an axle, other regions be it is hanging, because This, in order to provide support force preferably to the cushion branch pipe 5, is fixedly provided with support bar 8 at the gap 42, ensure that The stability of strutting system of the cushion branch pipe 5.

Further, as shown in accompanying drawing 3- accompanying drawings 5, the actuator 1 is locked and released by locking relieving mechanism 10 Put, the locking relieving mechanism 10 includes lock piece 101 and matched draw-in groove 102, the lock piece 101 includes two tools Have circular arc end face locking projection 1011 and its be pivotally connected in the gap 42 of the Rear frame 4, two locking projections There is interval, the draw-in groove 102 is arranged on two grabs of rounded triangle side of the actuator 1, institute between 1011 Stating snap fit has the curved end matched with the circular arc end face of the locking projection 1011, and the lock piece 101 is also connected with driving Drive mechanism 103 and resetting-mechanism 104 that its relatively described Rear frame 4 is overturn.

As shown in Figure 4, the drive mechanism 103 includes at least one set of activation button 1031 and mounting cup 1032, institute State that activation button 1031 can stretch in the mounting cup 1032 and it passes through connecting rod 1033 and connects the lock piece 101, institute Drive mechanism 103 is stated to drive the lock piece 101 to overturn and locking projection 1011 thereon is exited from the draw-in groove 102, So as to discharge the actuator 1.

As shown in Figure 1, the resetting-mechanism 104 is disposed on the pivot connection point of the lock piece 101 and Rear frame 4 Torsion spring or one end at 105 are fixed in the activation button 1031, and the other end is fixed on the bullet on the mounting cup 1032 Spring, the resetting-mechanism 104 is used to drive the reverse flip of the lock piece 101 to reset.

The both sides of the position pivotally connected with the actuator 1 of the Rear frame 4 are symmetrically arranged with lift-pull handle 9, are easy to Carry out the folding and carrying of vehicle.

When needing the folding tricycle by utility model to be folded, its process is as follows：

The activation button 1031 is pressed first, and the connecting rod 1033 being connected with the activation button 1031 promotes the lock Stop member 101 is rotated around it with the pivot connection point of the Rear frame 4, so that the locking projection 1011 on the locking member 101 Exited from the draw-in groove 102, now, the actuator 1 is no longer influenced by the limitation of the locking relieving mechanism 10, can live It is dynamic.

Then, the lift-pull handle 9 is lifted upwards, because the lift-pull handle 9 is fixed with the Rear frame 4, at this moment, with attached As a example by Fig. 1, one end that the Rear frame 4 is connected with the actuator 1 is subject to the pulling force towards upper right, and its other end is subject to certainly The downward gravity of body, therefore, the Rear frame 4 is tilted with the upward lifting in one end that the actuator 1 is connected, also, with institute One end constantly upward lifting tilting that Rear frame 4 is connected with the actuator 1 is stated, the Rear frame 4 is connected with actuator 1 One end progressively reduces to the horizontal range of one end of the connection trailing wheel 120 of the Rear frame 4, and minimum is reached when completing and folding.

While the upward lifting in vehicle frame 4 and one end that the actuator 1 is connected is tilted in the rear, the actuator 1 and Lower link 21 follows the Rear frame 4 to be moved to direction is tilted with one end that actuator 1 is connected, so that the actuator 1 leaves The lock position corresponding with the lock piece 101, now, unclamps the activation button 1031, and the lock piece 101 is described Resetted under the reaction force of torsion spring or spring.

Because one end that the actuator 1 and lower link 22 are connected with actuator is moved to direction is tilted, so as to drive One end that the upper connecting rod 21 is connected with the actuator 1 is also moved to tilting direction, due to the upper connecting rod 21 and lower link 22 pulling force by being moved to tilting direction（Towards the pulling force of upper right）, therefore pull the foresteerage gear 3 and front-wheel 110 is overall to the movement of the direction of the trailing wheel 120, so that the distance between the front-wheel 110 and trailing wheel 120 progressively reduce；Meanwhile, 3 pairs of upper connecting rods 21 of the foresteerage gear and lower link 22 produce reaction force, the reaction force to pass through upper connecting rod 21 and lower link 22 act on the actuator 1 so that the actuator 1 produce counterclockwise upset, with the upper company Bar 21 and lower link 22 and the continuous lifting in one end that actuator 1 is connected and the extremely upper connecting rod 21 and lower link 22 and the support When sleeve pipe 31 is parallel, the upper connecting rod 21 and lower link 22 are locked cannot be further continued for rotating, and whole folding stand cannot be after It is continuous to fold, that is, complete to fold.

While the actuator 1 overturns, it applies a drawing towards the direction of the front-wheel 110 to the pull bar 6 Power, so that the pull bar 6 pulls the cushion branch pipe 5, so that the cushion branch pipe 5 is around its pivot with the Rear frame 4 Tie point 105 is rotated counterclockwise, and is progressively pressed close to the Rear frame.

When final folding is completed, as shown in accompanying drawing 5, accompanying drawing 6, three planes where the front-wheel 110 and trailing wheel 120 are still Right keeping parallelism, the plane that their minimum point is formed and horizontal plane keeping parallelism and the front-wheel 110 and the part of trailing wheel 120 Overlap；Meanwhile, the connecting rod 2 is parallel with supporting sleeve 31 and main part of the lower link 22 exists with the Rear frame 4 Partially overlap, the Rear frame 4 is parallel with the standpipe 51 in cushion branch pipe 5 or forms wedge configuration, the standpipe 51 and pull bar 6 Parallel and described standpipe 51 is located in the notch of the U-shaped position-limiting cover 43；In addition, the connecting rod 2, supporting sleeve 31, Rear frame 4th, in cushion branch pipe 5 standpipe 51, pull bar 6 etc. are vertically extending, and they are respectively positioned on the front-wheel 110 and trailing wheel 120 is covered In the horizontal space of lid.

When needing to be launched folding tricycle of the present utility model, applied to the front-wheel 110 and/or trailing wheel 120 Power, makes the trailing wheel 120 be separated with front-wheel 110, now, one end that the connecting rod 2 and Rear frame 4 are connected with the actuator 1 Move down, recovered from tilting state to lying status so as to be connecting rod 2 and Rear frame 4, and then drive actuator 1 to moving down Dynamic, when the actuator 1 is moved down, the curved end of the snap fit on the actuator 1 can be with the locking of the lock piece 1 The circular arc end contact of projection 1011, and the lock piece 1 can be promoted to rotate clockwise, when the actuator 1 reaches locking position When putting, the lock piece 101 rotates counterclockwise and makes the draw-in groove that locking projection 1011 thereon is snapped onto on the actuator 1 In 102；Meanwhile, the upper clamping block 71 and lower clamping block 72 in the deformation process of the upper connecting rod 21 and lower link 22 progressively It is changed into clamped condition from released state, limits the upper connecting rod 21 and lower link 22 is rotated further, so that using overall structure Realize the locking of folding stand.

When the folding tricycle is bicycle, the drive of the part compositions such as it is also including riding, swing arm, gear, chain Dynamic structure, is herein prior art, therefore, repeat no more.

When the folding tricycle is electric motor car, it also includes power drive system, and the power drive system includes

Battery（Not shown in figure）, for being powered for whole power drive system, it is arranged in the Rear frame 4 and positioned at institute The rear of cushion branch pipe 5 is stated,

Speed regulating handle, for adjusting speed, is arranged in the tap handle 33；

Motor（Not shown in figure）, for driving the front-wheel or trailing wheel, it can be integrated on the front-wheel 110, Can be connected with trailing wheel 120 by transmission mechanism；

And control circuit（Not shown in figure）, for controlling whole power drive system to run.

The utility model still has numerous embodiments, all use equivalents or equivalent transformation and all technologies for being formed Scheme, all falls within protection domain of the present utility model.

Claims (10)

1. folding tricycle, including it is provided with a front-wheel（110）Foresteerage gear（3）, it is characterised in that：Rotation before described To mechanism（3）In supporting sleeve（31）Pivotally connected two parallel connecting rods（2）, two connecting rods（2）Pivotally connected drive Moving part（1）, the actuator（1）It is pivotally connected to be symmetrically arranged with two trailing wheels（120）Rear frame（4）And by pull bar（6） Connection cushion branch pipe（5）, the cushion branch pipe（5）The pivotally connected Rear frame（4）,

Under deployed condition, the front-wheel（110）With trailing wheel（120）The plane at place is parallel, and it is flat that their minimum point is formed Face and plane-parallel and front-wheel（110）With trailing wheel（120）It is misaligned, the connecting rod（2）With supporting sleeve（31）Keep angle, The Rear frame（4）With cushion branch pipe（5）Standpipe（51）Vertically；

Under folded state, the front-wheel（110）With trailing wheel（120）Three planes at place are parallel, and their minimum point is formed Plane and plane-parallel and front-wheel（110）With trailing wheel（120）Partially overlap, the connecting rod（2）With supporting sleeve（31）It is flat OK, the Rear frame（4）With cushion branch pipe（5）Standpipe（51）Parallel or formation wedge configuration.

2. folding tricycle according to claim 1, it is characterised in that：The foresteerage gear（3）Also include described Supporting sleeve（31）It is interior rotatably arranged with steering tube（32）, the steering tube（32）Upper end be provided with tap handle （33）, its lower end is provided with front-wheel mounting bracket（34）, the front-wheel mounting bracket（34）Furcation connect the front-wheel（110）.

3. folding tricycle according to claim 1, it is characterised in that：The supporting sleeve（31）It is additionally provided with outer wall Connector（35）, the connector（35）On be provided with the 4th pivot hole with difference in height（351）And the 5th pivot hole （352）, the 4th pivot hole at higher position（351）To the supporting sleeve（31）Distance be less than the 5th pivot Hole（352）To the supporting sleeve（31）Distance.

4. folding tricycle according to claim 3, it is characterised in that：Two connecting rods（2）Between also set up it is limited Position mechanism（7）, the position-limit mechanism is including being arranged at upper connecting rod（21）On upper clamping block（71）And it is arranged at lower link （22）On lower clamping block（72）,

Under deployed condition, the upper clamping block（71）With lower clamping block（72）Clamping is spacing；

Under folded state, the upper clamping block（71）With lower clamping block（72）Separate.

5. folding tricycle according to claim 3, it is characterised in that：The actuator（1）Including distribution triangular in shape The first pivot hole（11）, the second pivot hole（12）And the 3rd pivot hole（13）, first pivot hole（11）With the second pivot Hole（12）The distance between be equal to the 4th pivot hole（351）And the 5th pivot hole（352）The distance between, first pivot Axis hole（11）Place's connection upper connecting rod（21）One end, second pivot hole（12）Place's connection lower link（22）One end and after Vehicle frame（4）, the 3rd pivot hole（13）Place's connection pull bar（6）One end.

6. according to any described folding tricycles of claim 2-5, it is characterised in that：The pull bar（6）Provided at one connect Connect the actuator（1）, the pull bar（6）The pivotally connected cushion branch pipe of the other end（5）, and the pull bar（6）With seat Advance expenditure pipe（5）Pivot connection point position be higher than the cushion branch pipe（5）With Rear frame（4）Pivot connection point position.

7. folding tricycle according to claim 1, it is characterised in that：The Rear frame（4）On be provided with for exhibition Open state supports the cushion branch pipe（5）Support bar（8）.

8. folding tricycle according to claim 1, it is characterised in that：The Rear frame（4）With the actuator（1）Pivot The both sides of the position of axle connection are symmetrically arranged with lift-pull handle（9）.

9. folding tricycle according to claim 6, it is characterised in that：The actuator（1）By locking relieving mechanism （10）Locked and discharged, the locking relieving mechanism（10）Including the pivotally connected Rear frame（4）Lock piece（101） And the actuator（1）Upper setting with the lock piece（101）The draw-in groove of matching（102）, the lock piece（101）Connection The drive mechanism for driving it to overturn（103）And resetting-mechanism（104）.

10. folding tricycle according to claim 9, it is characterised in that：The drive mechanism（103）Including at least one set Activation button（1031）And mounting cup（1032）, the activation button（1031）Can be in the mounting cup（1032）In stretch and It passes through connecting rod（1033）Connect the lock piece（101）；The resetting-mechanism（104）It is disposed on the lock piece （101）With Rear frame（4）Pivot connection point at torsion spring or one end be fixed on the activation button（1031）On, the other end It is fixed on the mounting cup（1032）On spring.