CN205872320U - Folding tricycle - Google Patents

Abstract

The utility model discloses a folding tricycle, its frame includes side arm, after -frame and link, is equipped with front wheel, handlebar on the side arm, is equipped with first rotation locking means between link and the side arm, is equipped with the second between the front end of after -frame and the rear end of link and rotates locking means, installs the saddle on the link, the below of after -frame is equipped with the rear wheel. The utility model discloses well rotation locking means realizes around around folding and relative locking of folding and relative locking, link and after -frame of link and side arm, assurance respectively the utility model discloses the stability of whole frame during the use, and only set up two and rotate locking means, it is more convenient when folding, thus folding back after -frame can and reduce the occupation space after folding at the lateral part of side arm as far as, and it is more convenient to carry, because first rotations locking means rotates locking means with the second sets up respectively, can be only folding with front portion or rear portion as required during the use, still can there be other functions, the improvement after making it fold the utility model discloses an adaptability.

Description

Folding tricycle

Technical field

This utility model relates to a kind of folding tricycle.

Background technology

Existing tricycle volume is big, clumsy, it is big to take up room, inconvenience deposit with incidentally, for foregoing problems, part skill Art personnel devise folding tricycle, but existing folding tricycle parts are numerous, folding means structure complicated, cost Height, wastes time and energy when folding or open, and affects the quick use of user, owing to structure is complicated, folding operation is difficult to, the suitableeest Closing older or young crowd to use, promoted extension is limited, greatly limits promoting the use of of folding tricycle.

Summary of the invention

The technical problems to be solved in the utility model is to provide one and is easy to fold, folding tricycle easy to use.

For solving above-mentioned technical problem, this utility model includes the vehicle frame being provided with front and back wheel, and it is structurally characterized in that described Vehicle frame includes side arm, after-frame and link side arm, after-frame connected, and the lower section of described side arm is provided with front-wheel, top is provided with car , be provided with between front end and the side arm of described link the first rotation locking system realize folding before and after link and side arm and Locking, is provided with the second rotation locking system and realizes link and after-frame between front end and the rear end of link of described after-frame relatively Before and after fold and relative locking, described link is provided with vehicle seat, the lower section of described after-frame is provided with trailing wheel.

Described first rotate inserted link that locking system includes that its front end is fixed on side arm, its rear end is fixed on link Socket, described socket front end is arranged with the first ear mount and the second ear mount, and the rear end of described inserted link is inserted between two ear mount Plug-in mounting gap in；First ear mount is provided with the first plug-in opening, and the second ear mount is provided with the second plug-in opening, and inserted link is provided with the 3rd Plug-in opening, the first plug-in opening, the second plug-in opening and the 3rd plug-in opening diameter are consistent and are correspondingly arranged formation connecting hole, in connecting hole It is provided with and realizes inserted link and be rotationally connected with socket and the first locking piece of relative locking.

Being evenly equipped with multiple card holding trough around the second plug-in opening in described second ear mount, the inner edge of described card holding trough is inserted with second The connection of dress hole, described inserted link is evenly equipped with multiple groove, described groove on the surface near the second ear mount side around the 3rd plug-in opening Inner edge connect with the 3rd plug-in opening, the number of described groove adapts with card holding trough number；Described first locking piece is by locking Only head, regulation head and the first locking spring composition, described locking head includes the first end cap and locking cylinder, outside described first end cap Footpath more than the diameter of the second plug-in opening, described locking cylinder cylindrically, the internal diameter of described locking cylinder and the diameter of the second plug-in opening Adapting, described locking cylinder penetrates the second ear mount, inserted link, the plug-in opening of the first ear mount successively and stretches out the first plug-in opening, described The outer end of locking cylinder and the first end cap end opening affixed, interior, on the sidewall of described locking cylinder, symmetry offers two locking mouths, institute The outer surface uniform ring stating locking cylinder is furnished with multiple latch, and described latch is more than the second plug-in mounting along the length of locking cylinder axial direction The axial length in hole, described latch is arranged near the outer end of locking cylinder, and latch correspondence realizes locking head in snapping in card holding trough Relative localization and the extended card holding trough of latch and then realize the locking of inserted link and socket in snapping in groove；Described regulation head is by second End cap, locking rod and claw composition, the external diameter of described second end cap is more than the diameter of the first plug-in opening, the outer end of described locking rod Affixed with the second end cap, the external diameter of described locking rod is less than the internal diameter of locking cylinder, and described claw is two, and two claw symmetries set Putting the inner end at locking rod, described claw stretches in locking cylinder and snaps in locking cause for gossip and now regulates the connection of head and locking head, Described locking cylinder is set with the first locking spring stretching out the first plug-in mounting nose end, and the external diameter of described first locking spring is less than second The external diameter of end cap.

The outside of described first ear mount is provided with the first end cylinder, and described first end cylinder and the first plug-in opening are arranged concentrically, and first End cylinder makes the outside of the first ear mount be formed for the first installation cavity accommodating the second end cap in the form of a ring；The outside of the second ear mount is provided with Second end cylinder, the second end cylinder and the second plug-in opening concentric are arranged, and the second end cylinder makes the outside of the second ear mount form use in the form of a ring In the second installation cavity accommodating the first end cap.

Described second rotate that locking system includes being arranged on the mounting rod of link rear end, after-frame front end is arranged is set with Installing set and making mounting rod and install to overlap to be rotationally connected and can the second locking piece of relative locking on mounting rod.

Described second locking piece includes that the installation counterbore offered on mounting rod, installation put the tune that corresponding installation counterbore is offered Knothole, the lock pin being arranged in installation counterbore and the locking cap that be connected detachable with lock pin, described lock pin is by introversion Outer suit section, card dress section and the active segment including successively connecting as one, the axial length of described lock pin is less than or equal to installing The axial length of counterbore, described locking cap is arranged on the end of active segment, and described suit section is arranged in installation counterbore, described card The external diameter of dress section is less than the external diameter of suit section, and the external diameter of described active segment is less than the external diameter of card dress section, spiral shell dress on described active segment Locking cap, described adjustment hole is had to include the strip hole that at least two locking hole connects, the diameter of described locking hole with by locking hole Adapting with the diameter of card dress section makes card dress section can stretch in locking hole, and the external diameter of described suit section is more than the diameter of locking hole, The width of described strip hole is less than the diameter of locking hole, and the external diameter of described active segment is less than the width of strip hole；Counterbore is installed exist When the inner of suit section is provided with pressing lock shotpin, lock pin is inwardly movable so that card dress section realizes installing in stretching into installation counterbore Bar and installing in the card dress section relatively rotating, automatically making when unclamping lock pin lock pin of set snaps in locking hole realize mounting rod and The elastomer of the relative locking of set is installed.

Described lock pin outer end is provided with screwed hole, and described screwed hole is coaxially set with lock pin, described locking cap bag Including connecting rod and locking lid, the external diameter of described locking lid is more than the diameter of locking hole, and the outer surface of described connecting rod is provided with screw thread, The length of described connecting rod adapts with the length of screwed hole, and described connecting rod spiral shell realizes lock pin and locking in being contained in screwed hole The detachable connection of cap.

The rear end of described link is provided with the mounting rod stretched to vehicle frame both sides, and described after-frame is by symmetrically arranged two points Support forms, and the lower section of each sub-stent is provided with trailing wheel, and the front end of sub-stent is provided with the installation for being sleeved on mounting rod Set；The two ends forward side of described mounting rod is obliquely installed, and described sub-stent is arranged by forward-backward algorithm outer incline and sub-stent and peace Angle between dress bar is obtuse angle.

The rest seat that can fold with sub-stent or launch it is provided with between said two sub-stent.

Described handlebar is rotatable and can relatively be arranged on side arm locking and extension type.

Use after said structure, be provided with between front end and the side arm of this utility model link the first rotation locking system, Be provided with the second rotation locking system between front end and the rear end of link of after-frame, rotate locking system realize respectively link and Fold before and after side arm and locking, link fold and relative locking with before and after after-frame relatively, it is ensured that this utility model uses Time whole vehicle frame stability, and only arrange two rotate locking systems, more convenient during folding, and use fore-aft fold side Formula, after folding after-frame can and side arm sidepiece thus as far as possible reduce fold after taking up room, carry more convenient, due to First rotation locking system and second rotates locking system and is respectively provided with, and can the most only be rolled in front portion or rear portion during use Folded so that it is still can to have other functions after folding, improve adaptability of the present utility model.

Accompanying drawing explanation

Below in conjunction with the accompanying drawings and this utility model is described in further detail by detailed description of the invention:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation that Fig. 1 overlooks；

Fig. 3 is the structural representation of the first rotation locking system；

Fig. 4 is the structural representation of inserted link；

Fig. 5 is the structural representation of socket；

Fig. 6 is the structural representation of the second rotation locking system；

Fig. 7 is the structural representation of the second rotation locking system section view；

Fig. 8 is this utility model structural representation when being in semi-collapsed condition；

Fig. 9 is this utility model structural representation when being in whole folded state；

Figure 10 is the structural representation that Fig. 9 right side regards.

Detailed description of the invention

As shown in Figures 1 to 7, folding tricycle includes the vehicle frame being provided with front and back wheel, vehicle frame include side arm 3, after-frame and The link 4 side arm, after-frame connected, the lower section of side arm is provided with front-wheel, top is provided with handlebar 6, the front end of link and side arm Between be provided with the first rotation locking system realize link and before and after side arm fold and relative locking, the front end of after-frame be connected It is provided with the second rotation locking system between the rear end of frame and realizes link and folding and relative locking before and after after-frame, on link Being provided with vehicle seat 5, the mounting structure of vehicle seat can be selected for prior art, owing to this utility model is folding tricycle, is anti- When only folding, vehicle seat interferes, and vehicle seat can be designed to foldable structure, and in this utility model, folding structure can Select following structure: below-seat be respectively provided on two sides be rotationally connected with it and can the connecting rod 31 of relative locking, connecting rod 31 Lower end and link between also select and can realize both and be rotationally connected and can the structure of relative locking be attached, be rotationally connected And second can be can be selected in this utility model relative to the structure of locking and rotate the structure of locking system, it is possible to select in prior art Other structures, when normally riding by vehicle seat launch, during folding, turn to connecting rod substantially stick together with link, Then rotating vehicle seat makes vehicle seat parallel with link, so that vehicle seat is folded in the space between side arm and link, reduces Taking up room after folding, and this kind of structure be not required to dismantle vehicle seat, uses more convenient, foldable structure also can be selected for other Prior art, in this not go into detail.Attachment structure and the side of trailing wheel 2, side arm and front-wheel it is provided with below the rear end of after-frame Formula, after-frame are prior art with attachment structure and the mode of trailing wheel, and in this not go into detail.Described in the utility model three Wheel car be fold after make the length of its fore-and-aft direction shorten, therefore in this utility model link and after-frame all in vertical direction Rotate and then realize folding, it can thus be appreciated that aforesaid first rotates locking system and the second rotation locking system for being perpendicular to vehicle frame Fore-and-aft direction is arranged.

First rotate inserted link 7 that locking system includes that its front end is fixed on side arm, its rear end is fixed on link Socket 8, in this utility model, socket is structure as a whole with link, and socket front end is arranged with the first ear mount 9 that extension is arranged With the second ear mount 10, the rear end of inserted link is inserted in the plug-in mounting gap between two ear mount；First ear mount 9 is provided with the first plug-in mounting Hole, the second ear mount 10 is provided with the second plug-in opening, and inserted link 7 is provided with the 3rd plug-in opening, the first plug-in opening, the second plug-in opening and Three plug-in opening diameters are consistent and are correspondingly arranged formation connecting hole, be provided with and realize inserted link 7 and socket is rotationally connected and phase in connecting hole The first locking piece to locking, before and after the first locking piece is perpendicular to vehicle frame, direction is arranged, it is ensured that side arm and link can be along front Rear is to folding and stretching.

It is evenly equipped with multiple card holding trough 11, the inner edge of card holding trough 11 and the second plug-in mounting around the second plug-in opening in second ear mount 10 Hole connects, and the inner wall section position of the i.e. second plug-in opening radially extends out formation card holding trough, and inserted link 7 is near the second ear mount 10 side Surface be evenly equipped with multiple groove 12 around the 3rd plug-in opening, the inner edge of groove 12 connects with the 3rd plug-in opening, the number of groove For a times of card holding trough 11 number, a is the integer more than 1, in the present embodiment card holding trough be 4, groove 12 be 12, i.e. a is 3.First locking piece is made up of locking head, regulation head and the first locking spring, and locking head includes the first end cap 13 and locking cylinder 14, The external diameter of the first end cap 13 is more than the diameter of the second plug-in opening, and cylindrically, the internal diameter of locking cylinder 14 is slightly less than the to locking cylinder 14 The diameter of two plug-in openings, locking cylinder 14 penetrates the second plug-in opening, the 3rd plug-in opening, the first plug-in opening and its end successively and stretches out One plug-in opening, the outer end of locking cylinder 14 and the first end cap 13 end opening affixed, interior, on the sidewall of locking cylinder 14, symmetry offers two Individual locking mouth 15, the outer surface uniform ring of locking cylinder 14 is furnished with 4 latches 16, the number of latch 16 and distributing position and card holding trough Number and distributing position adapt, latch 16 is along axial long more than the second plug-in opening of the length of locking cylinder 14 axial direction Degree, latch 16 is arranged near the outer end of locking cylinder 14, and latch 16 correspondence realizes the most fixed of locking head in snapping in card holding trough 11 Position and the extended card holding trough of latch 16 11 and then realize the locking of inserted link 7 and socket in snapping in groove 12；Regulation head is by the second end Lid 17, locking rod 18 and claw 19 form, and the external diameter of the second end cap 17 is more than the diameter of the first plug-in opening, the outer end of locking rod 18 Affixed with the second end cap 17, the external diameter of locking rod 18 is slightly less than the internal diameter of locking cylinder 14, and claw 19 is two, and two claws 19 are right Claim to be arranged on the inner end of locking rod 18, in claw 19 stretches into locking cylinder 14 and snap in locking mouth 15 and realize regulation head and locking head Connection, locking cylinder 14 is set with the first locking spring 20 stretching out the first plug-in mounting nose end, and the external diameter of the first locking spring 20 is little In the external diameter of the second end cap 17, after claw 19 snaps in locking mouth 15, the first locking spring 20 is limited in the first ear mount 9 and Between two end caps 17, owing to the first locking spring 20 is by the pressure of the second end cap 17, it flexes outward, thus ensures claw 19 Only can be connected with locking mouth 15, and then ensure locking head and regulation head stable connection.During use, only need to press the second end cap 17, thus indirectly act on locking cylinder 14, make locking cylinder 14 slide to its outer end, so that latch 16 departs from groove 12, Now socket releases with inserted link 7 locking, and both can relatively rotate, and once unclamps the second end cap 17, at the first locking bullet Automatically, under the stretching, extension of spring 20, the second end cap 17 drives locking cylinder 14 movable to the first ear mount 9 side, so that latch 16 snaps in groove 12, it is achieved the relative locking of inserted link 7 and socket.This rotates locking system, simple in construction, and easy to operate, raising folds, stretches effect Rate.

For improving the stability that the first locking piece is installed, it is provided with the first end cylinder 21, the first end cylinder in the outside of the first ear mount 9 21 are arranged concentrically with the first plug-in opening, and the first end cylinder 21 makes the outside of the first ear mount 9 be formed for accommodating the second end cap in the form of a ring First installation cavity of 17, the first end cylinder 21 and the first ear mount 9 are structure as a whole；The outside of the second ear mount 10 is provided with the second end cylinder 22, the second end cylinder 22 and the second plug-in opening concentric are arranged, and the second end cylinder 22 makes the outside of the second ear mount 10 form use in the form of a ring In accommodating the second installation cavity of the first end cap 13, the second end cylinder 22 and the second ear mount 10 are structure as a whole.In this utility model One ear mount 9 and the second ear mount 10 are integrated casting with socket and form, and low cost of manufacture and integrative-structure can improve socket and ear mount Bonding strength.By aforementioned structure, the first end cap 13 and the second end cap 17 are separately positioned in installation cavity, prevent from touching by mistake, make Inserted link 7 is become automatically to rotate with socket.

Second rotate that locking system includes being arranged on the mounting rod 23 of link rear end, after-frame front end is arranged is sleeved on Installing set 24 and making mounting rod and installation overlap to be rotationally connected and can the second locking piece of relative locking on mounting rod.Rod end is installed The external diameter in portion is less than the external diameter of other positions of mounting rod, so that the end of mounting rod forms step, installs set and is directly sleeved on The end of mounting rod, makes end and the step laminating of mounting rod that installation overlaps, can position installing set, the setting of step The location installing set can be simplified, facilitate assembling of the present utility model.In this utility model, the rear end of link is provided with to vehicle frame two The mounting rod 23 that side is stretched, after-frame is made up of symmetrically arranged two sub-stents 30, after the rear end of each sub-stent 30 is provided with Wheel, the front end of sub-stent 30 is provided with the installation set for being sleeved on mounting rod, installs and is correspondingly provided with second on set and mounting rod Locking piece realizes both be rotationally connected and relative locking.In this utility model, the two ends forward side of mounting rod is obliquely installed, point Support is arranged by forward-backward algorithm outer incline and angle a between sub-stent and mounting rod is obtuse angle, the angle that mounting rod tilts with And sub-stent be mounted opposite bar tilt angle can the most suitably adjust, make sub-stent 30 be carried forward folding Time, sub-stent 30 gradually can be drawn close to inner side, thus reduce taking up room after this utility model folds, this reality to greatest extent With novel by mounting rod and the setting of sub-stent angle, adjust sub-stent after this utility model folds draws close degree, carries The convenience that high this utility model uses and carries.The rest seat that can fold with sub-stent or launch it is provided with between two sub-stents 32, when this utility model launches or only front portion folds, user can be sitting on rest seat and have a rest, in the present embodiment, and rest seat Being formed by rope braiding, it is network structure, and the two ends of rest seat can be fastened on two sub-stents respectively by rope, Rope for connecting can suitably leave part surplus, it is ensured that when sub-stent folds, two sub-stents will not be produced dry by rest seat Relate to, and leave part surplus, also can be more comfortable when user is sitting on rest seat.The structure of rest seat is alternatively in prior art Other structures, as the burlap enough by intensity makes, the corner of burlap is fixed on sub-stent by connecting rope.

Second locking piece includes that the installation counterbore 25 offered on mounting rod, installation put the tune that corresponding installation counterbore 25 is offered Knothole, the lock pin being arranged in installation counterbore 25 and the locking cap 28 that be connected detachable with lock pin, lock pin 27 is by interior Outwards including suit section 271, card dress section 272 and the active segment 273 connected as one successively, locking cap is arranged on active segment 273 End, suit section 271 be arranged on installation counterbore 25 in, the axial length of lock pin 27 less than or equal to install counterbore 25 axial Length, the external diameter of card dress section 272, is lived less than the external diameter of card dress section 272 less than the external diameter of suit section 271, the external diameter of active segment 273 Being screwed with locking cap in dynamic section 273, adjustment hole 26 includes the strip hole that at least two locking hole 261 connects with by locking hole 261 262, adjustment hole is arranged along the periphery installing set, and wherein the diameter of the diameter of locking hole 261 and card dress section 272 adapts and makes card Dress section 272 can stretch in locking hole 261, and the external diameter of suit section 271 is more than the diameter of locking hole 261, and the width of strip hole 262 is little In the diameter of locking hole 261, the external diameter of active segment 273 less than the width of strip hole 262, locking hole 261 arrange position and The length of strip hole 262 is configured according to the rotational angle of sub-stent 30, by selecting different locking holes 261 can make branch Frame 30 is in different positions；Counterbore 25 lock pin when the inner being set with section 271 is provided with pressing lock shotpin is installed the most movable So that card dress section 272 makes lock pin automatically card dress section 272 when stretching in installation counterbore 25, unclamp lock pin snaps in locking hole Elastomer 29 in 261, elastomer is spring.Lock pin outer end is provided with screwed hole, and screwed hole is coaxially set with lock pin, Locking cap includes connecting rod 281 and locking lid 282, and the external diameter of locking lid is more than the diameter of locking hole 261, the outer surface of connecting rod Being provided with screw thread, the length of connecting rod adapts with the length of screwed hole, and connecting rod spiral shell realizes lock pin and lock in being contained in screwed hole The only detachable connection of cap.During assembling, first lock pin and elastomer are arranged in installation counterbore 25, then by installation set set Enter mounting rod, manually lock pin is pressed down on during being inserted in and make it in installation counterbore 25, make installation set be enclosed within smoothly On mounting rod, then rotate and set is installed, select suitable locking hole 261 and make suitable locking hole 261 right with installation counterbore 25 Should, now lock pin slides in and out under the effect of elastomer, and card dress section 272 snaps in locking hole 261, it is achieved mounting rod and peace The relative locking of encapsulation, is then contained in locking cap spiral shell on lock pin, completes mounting rod and the assembling installing set.When needs fold Time, only need to press locking lid, card dress section 272 is pressed in installation counterbore 25, active segment 273 is in adjustment hole, then rotates Set is installed, makes active segment 273 movable in strip hole 262, after turning to correct position, unclamp locking lid, elastomer resilience, Outwards being ejected by lock pin, card dress section 272 snaps in locking hole 261 again, it is achieved mounting rod and the relative locking installing set, this Plant the second rotation locking system simple in construction, easy to operate during folding.

In this utility model, handlebar 6 is rotatable and can relatively be arranged on side arm, stretching of handlebar locking and extension type Shrinking structure can be selected for stretching structure of the prior art, the telescopic connection structure of in this not go into detail handlebar.This reality Rotatably and the second structure rotating locking system can be can be selected for relative to the structure of locking, i.e. in side arm upper end with novel middle handlebar Arranging mounting rod, handlebar lower end is sleeved on mounting rod, mounting rod and handlebar are correspondingly arranged aforementioned in second rotation lock Locking apparatus, can realize being rotationally connected and relative locking of handlebar and side arm.The most describe the second rotation locking dress in detail The structure put, therefore at this and be the most no longer described in detail, those skilled in the art can have no to doubt according to foregoing teachings The concrete attachment structure of handlebar and side arm is learnt in free burial ground for the destitute.Rotating handlebar during folding makes handlebar end turn to inner side, thus maximum journey After the reduction folding of degree, tricycle takes up room.

Fig. 8 is structural representation during this utility model only anterior folding, when, after its anterior folding, user can be sat at any time On rest seat between sub-stent have a rest, and open pack up the most very convenient.Fig. 9 and Figure 10 is after this utility model all folds Structural representation, after folding, receive in sub-stent and also make sub-stent be received in the outside of side arm, reduce to greatest extent after folding Taking up room, this utility model takes up room little, it is simple to deposit, and foldable structure is simple, and easier during operation, folding rate is more Hurry up, be suitable for various people and use, during use, sub-stent stretches to both sides, and when riding, stability is more preferable.

Power set of the present utility model can be selected for structure of the prior art, such as storage battery or foot drive device, at this No longer it is described in detail.First rotation locking system and second rotates locking system and also can be selected for other structures of the prior art, In this not go into detail.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model.Previous embodiment Being described in detail this utility model, for a person skilled in the art, it still can be to aforementioned each enforcement Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent.In every case new in this practicality Within the scope of the inventive concept of type, any modification, equivalent substitution and improvement etc. done, it is all contained in protection of the present utility model Within the scope of.

Claims (10)

1. a folding tricycle, including being provided with the vehicle frame of front and back wheel, is characterized in that described vehicle frame includes side arm, after-frame and will Side arm, after-frame connect link, the lower section of described side arm is provided with front-wheel, top is provided with handlebar, the front end of described link with It is provided with the first rotation locking system between side arm and realizes link and folding and relative locking before and after side arm, before described after-frame It is provided with between end and the rear end of link before and after the second rotation locking system realizes link and after-frame and folds and relative locking, Being provided with vehicle seat on described link, the lower section of described after-frame is provided with trailing wheel.

Folding tricycle the most according to claim 1, is characterized in that described first rotation locking system includes that its front end is solid The socket that the inserted link that is connected on side arm, its rear end are fixed on link, described socket front end is arranged with the first ear mount and Two ear mount, the rear end of described inserted link is inserted in the plug-in mounting gap between two ear mount；First ear mount is provided with the first plug-in opening, the Two ear mount are provided with the second plug-in opening, and inserted link is provided with the 3rd plug-in opening, the first plug-in opening, the second plug-in opening and the 3rd plug-in opening Diameter is consistent and is correspondingly arranged formation connecting hole, is provided with and realizes inserted link and be rotationally connected with socket and the of relative locking in connecting hole One locking piece.

Folding tricycle the most according to claim 2, is characterized in that in described second ear mount uniform around the second plug-in opening Having multiple card holding trough, the inner edge of described card holding trough to connect with the second plug-in opening, described inserted link is on the surface near the second ear mount side Being evenly equipped with multiple groove around the 3rd plug-in opening, the inner edge of described groove connects with the 3rd plug-in opening, the number of described groove and Adapting of card holding trough number；Described first locking piece is made up of locking head, regulation head and the first locking spring, described locking head Including the first end cap and locking cylinder, the external diameter of described first end cap is more than the diameter of the second plug-in opening, and described locking cylinder is cylinder Shape, the internal diameter of described locking cylinder and the diameter of the second plug-in opening adapt, described locking cylinder penetrate successively the second ear mount, inserted link, The plug-in opening of the first ear mount also stretches out the first plug-in opening, the outer end of described locking cylinder and the first end cap end opening affixed, interior, described On the sidewall of locking cylinder, symmetry offers two locking mouths, and the outer surface uniform ring of described locking cylinder is furnished with multiple latch, described Latch is along the length of locking cylinder axial direction more than the axial length of the second plug-in opening, and described latch is near the outer end of locking cylinder Arranging, latch correspondence realizes the relative localization of locking head and the extended card holding trough of latch and then snaps in groove in snapping in card holding trough Realize the locking of inserted link and socket；Described regulation head is made up of the second end cap, locking rod and claw, the external diameter of described second end cap More than the diameter of the first plug-in opening, the outer end of described locking rod is affixed with the second end cap, and the external diameter of described locking rod is less than locking The internal diameter of cylinder, described claw is two, and two claws are symmetricly set on the inner end of locking rod, and described claw stretches in locking cylinder And snap in locking cause for gossip and now regulate the connection of head and locking head, described locking cylinder is set with the first lock stretching out the first plug-in mounting nose end Only spring, the external diameter of described first locking spring is less than the external diameter of the second end cap.

Folding tricycle the most according to claim 3, is characterized in that the outside of described first ear mount is provided with the first end cylinder, institute Stating the first end cylinder and the first plug-in opening is arranged concentrically, the first end cylinder makes the outside of the first ear mount be formed for accommodating second in the form of a ring First installation cavity of end cap；The outside of the second ear mount is provided with the second end cylinder, the second end cylinder and the second plug-in opening concentric and arranges, the Two end cylinders make the outside of the second ear mount be formed for the second installation cavity accommodating the first end cap in the form of a ring.

Folding tricycle the most according to claim 1, is characterized in that described second rotation locking system includes the company of being arranged on Connect the installation set on the be sleeved on mounting rod of the mounting rod of frame rear end, the setting of after-frame front end and make mounting rod and set rotation is installed Connect and can the second locking piece of locking relatively.

Folding tricycle the most according to claim 5, is characterized in that what described second locking piece included offering on mounting rod Counterbore is installed, the adjustment hole putting corresponding installation counterbore and offering, the lock pin being arranged in installation counterbore and and lock pin are installed The locking cap of detachable connection, described lock pin includes suit section, card dress section and the work connected as one the most successively Dynamic section, the axial length of described lock pin is less than or equal to the axial length of installation counterbore, and described locking cap is arranged on active segment End, described suit section is arranged in installation counterbore, and the external diameter of described card dress section is less than the external diameter of suit section, described active segment External diameter less than card dress section external diameter, described active segment is screwed with locking cap, described adjustment hole include at least two locking hole and The strip hole connected by locking hole, the diameter of described locking hole and the diameter blocking dress section adapt and make card dress section can stretch into locking hole In, the external diameter of described suit section is more than the diameter of locking hole, and the width of described strip hole is less than the diameter of locking hole, described activity The external diameter of section is less than the width of strip hole；Counterbore lock pin when the inner being set with section is provided with pressing lock shotpin is installed the most movable Realize mounting rod and the relatively rotating of set is installed so that card dress section stretches into install in counterbore, automatically make locking when unclamping lock pin The card dress section of pin realizes the elastomer of mounting rod and the relative locking installing set in snapping in locking hole.

Folding tricycle the most according to claim 6, is characterized in that described lock pin outer end is provided with screwed hole, described spiral shell Pit is coaxially set with lock pin, and described locking cap includes connecting rod and locking lid, and the external diameter of described locking lid is more than locking The diameter in hole, the outer surface of described connecting rod is provided with screw thread, and the length of described connecting rod adapts with the length of screwed hole, described Connecting rod spiral shell realizes the detachable connection of lock pin and locking cap in being contained in screwed hole.

Folding tricycle the most according to claim 5, is characterized in that the rear end of described link is provided with and stretches to vehicle frame both sides The mounting rod of exhibition, described after-frame is made up of symmetrically arranged two sub-stents, and the lower section of each sub-stent is provided with trailing wheel, branch The front end of frame is provided with the installation set for being sleeved on mounting rod；The two ends forward side of described mounting rod is obliquely installed, described point Support is arranged by forward-backward algorithm outer incline and angle between sub-stent and mounting rod is obtuse angle.

Folding tricycle the most according to claim 8, it is characterized in that being provided with between said two sub-stent can be with sub-stent The rest seat folded or launch.

Folding tricycle the most according to any one of claim 1 to 9, is characterized in that described handlebar is rotatable and can phase Locking and extension type are arranged on side arm.