CN208544318U - Folding children's tricycle - Google Patents

Abstract

The utility model discloses a kind of folding children's tricycles, including vehicle frame, vehicle frame front end is equipped with front fork, vehicle frame top is equipped with handlebar assembly, vehicle frame rear end is equipped with rear wheel frame, vehicle frame upper rear end is equipped with for carrying out tricycle and controlling the push rod of tricycle direction of travel, rear-wheel is rotatably equipped on rear wheel frame, vehicle frame includes the mobile jib being arranged along the longitudinal direction, mobile jib front end is fixed with vertically arranged preceding installation set, rear end is fixed with vertically arranged rear installation set, before the breeches pipe on front fork top is mounted in installation set, what handlebar assembly lower end can fold backward formula is mounted on mobile jib front end, rear wheel frame is rotatably installed in mobile jib rear end, rear-wheel bottom surface and lockable mechanism of the front-wheel bottom surface in same level can be made for rear wheel frame locking by being equipped on push rod；Push rod includes the lower push-rod and upper push-rod that can be rotated synchronously, and upper push-rod can fold forward connecting with lower push-rod for formula.The utility model foldable structure is simple, easy to operate.

Description

Folding children's tricycle

Technical field

The utility model relates to a kind of folding children's tricycles.

Background technique

Child's tricycle at present on the market is varied, and push rod is arranged in portion rear end, and push rod can control the row of tricycle Direction is walked, such tricycle is not most of foldable, it carries, storage inconvenience, and the Foldable three-wheel bassinet structure of fraction is multiple Miscellaneous, manufacturing cost is high, and it is inconvenient to fold, or still volume is larger after folding, causes inconvenient for use.

Summary of the invention

A kind of the technical problem to be solved by the present invention is to provide structures simple, folding folding children's tricycle.

In order to solve the above technical problems, the utility model includes vehicle frame, the vehicle frame front end is equipped with front fork, vehicle frame top is set There is handlebar assembly, the front fork lower rotational is equipped with front-wheel, and vehicle seat is equipped on the vehicle frame, and the vehicle frame rear end is equipped with Rear wheel frame, vehicle frame upper rear end are equipped with for carrying out tricycle and controlling the push rod of tricycle direction of travel, the rear wheel frame On be rotatably equipped with rear-wheel, it is characterized in that the vehicle frame includes the mobile jib being arranged along the longitudinal direction, the mobile jib front end is fixed with Vertically arranged preceding installation set, rear end are fixed with vertically arranged rear installation set, and the breeches pipe on the front fork top is mounted on preceding peace In encapsulation, what the handlebar assembly lower end can fold backward formula is mounted on mobile jib front end, and the rear wheel frame is rotatably installed in mobile jib Rear end, rear-wheel bottom surface and lock of the front-wheel bottom surface in same level can be made for rear wheel frame locking by being equipped on the push rod Locking mechanism；The push rod includes the lower push-rod and upper push-rod that can be rotated synchronously, and the upper push-rod can fold forward pushing away under for formula Bar connection.

It is rotatably equipped with front steering pipe in the preceding installation set, is rotatably equipped with rear steering pipe, institute in the rear installation set The left and right sides for stating front steering pipe is fixed with left steering bar, right turn bar respectively, and the left steering bar and right turn bar are threaded through In mobile jib, the rear end of the left steering bar and right turn bar is packed in respectively on rear steering pipe；The breeches pipe is sleeved on front steering It is rotated synchronously in pipe and with front steering pipe.

The breeches pipe upper end is fixed with handlebar fixing seat, and the handlebar assembly includes that its lower end is equipped with the handlebar of casing, set In casing and its lower end is stretched out the inner sleeve of lower end, by return spring that inner sleeve is fitted in casing and is sleeved on The handlebar of outside of sleeve is shaken hands, and the inner sleeve shakes hands to be fixedly mounted with by fixing bolt with handlebar, described its axis of inner sleeve lower end edge Lower adjustment hole in long strip is symmetrically arranged on Xiang Qi side wall, the handlebar fixing seat, which is equipped with, to be penetrated in two lower adjustment holes Gag lever post corresponds to fixing bolt installation place in described sleeve pipe and is equipped with the adjustment apertures being adapted with lower adjustment hole length, the vehicle Fixing seat rear side is equipped with the opening foldd backward for handlebar assembly.

The rear wheel frame includes left rear wheel bar and off hind wheel bar, between the left rear wheel bar and off hind wheel bar from the front to the back according to Secondary to be connected with master connecting-rod and back link, the master connecting-rod is connect with mobile jib rear end thereof, the left rear wheel bar and off hind wheel bar Rear end is separately installed with rear-wheel；The lower push-rod is sleeved in rear steering pipe, the lower push-rod top stretch out rear steering pipe and Cylindrical folding head is arranged in extension end, and the folding head is arranged in left-right direction, and the lower end of the upper push-rod is equipped with suit On folding head and can the foldable base that folds forward of head folded against, folding head can be caught in by being set with its lower end in the upper push-rod On the folding position-limiting tube of upper push-rod Yu lower push-rod position restriction is realized in the limit hole that opens up, be set on the upper push-rod It shakes hands to control the push rod of upper push-rod locking opposite with lower push-rod or relative rotation the controllable position for folding position-limiting tube；It is described Lockable mechanism includes being mounted on mobile jib rear end, may be stuck on back link and realize the locking of rear-wheel rack position and can be detached from back link realization The stay hook of rear wheel frame unlock, the push rod are equipped with the control mechanism of control stay hook state.

The stay hook is U-shaped in front opening, and the upper end hinge is mounted in mobile jib rear end, and the control mechanism includes and push rod The bracing wire of knob connection, the lower end of the bracing wire is connect with stay hook rear end.

On the vehicle frame vehicle seat rear it is turnable be equipped with the backrest being connected as one and keep off it is fluffy, after the gear is fluffy End is fixedly mounted with upper push-rod.

Radial clearance, suit in the radial clearance are equipped between the preceding installation set inner surface and front steering tube outer surface There is preceding capping, the front steering Guan Yuqian capping clearance fit realizes the relative rotation between front steering Guan Yuqian installation set；Institute Before capping is packed in by bolt before stating in installation set.

Capping includes the preceding upper capping and front lower capping before being packed in respectively by bolt in installation set before described, before described Steering tube and preceding upper capping and front lower capping clearance fit realize the relative rotation between front steering Guan Yuqian installation set, before described Lower capping, which is equipped with, clamps counterbore, and the preceding above capping, which is equipped with to be caught in, clamps the preceding upper capping of counterbore realization and front lower capping company Connect fixed kelly.

Radial clearance, suit in the radial clearance are equipped with after described between installation set inner surface and rear steering tube outer surface There is rear seal-cover, the rear steering pipe and rear seal-cover clearance fit realize the relative rotation between rear steering Guan Yuhou installation set；Institute Rear seal-cover is stated to be packed in rear installation set by bolt.

The rear seal-cover includes the rear upper capping and rear lower capping being packed in respectively by bolt in rear installation set, after described Steering tube and rear upper capping and rear lower capping clearance fit realize the relative rotation between rear steering Guan Yuhou installation set, after described Lower capping is equipped with clamping counterbore, and upper capping connects equipped with that can be caught in upper capping and lower capping afterwards after clamping counterbore is realized after described Connect fixed kelly.

After adopting the above structure, handlebar, push rod and rear wheel frame are foldable in the utility model, this is practical new after folding Type volume becomes smaller, convenient for storage.When handle bar folding, handlebar knob is lifted upwards, fixing bolt is moved up along adjustment apertures, under Adjustment hole is along gag lever post upward sliding, and handlebar knob lift inner sleeve upwards while compression retracteding position spring, inner sleeve lower end from Breeches pipe is detached from, and is then rotated backward around gag lever post and is realized foling backward for handlebar assembly.When rear wheel frame and push rod fold, upwards Push rod knob is lifted, push rod knob Foldable position-limiting tube is moved up along guide rod, folds position-limiting tube lower end from the limit for folding head It is detached from hole, unlocks lower push-rod, upper push-rod can be overturn forward to folding at this time, while push rod knob drives bracing wire upward It is mobile, stay hook reverse flip is driven, stay hook is opened on back link disengaging, unlocks rear wheel frame, and rear wheel frame can be at this time Preceding fold, to realize the folding of rear wheel frame and push rod.The utility model foldable structure is simple, easy to operate.

Detailed description of the invention

With reference to the accompanying drawing and specific embodiment is described in further detail the utility model:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the state diagram of the utility model when lifting putter grip；

Fig. 3 is structural schematic diagram when the utility model folds

Fig. 4 is the state diagram of the utility model when lifting handlebar knob；

Fig. 5 is the structural schematic diagram amplified at A in Fig. 1；

Fig. 6 is the structural schematic diagram amplified at B in Fig. 1；

Fig. 7 is the structural schematic diagram amplified at C in Fig. 1；

Fig. 8 is the structural schematic diagram amplified at D in Fig. 2；

Fig. 9 is the structural schematic diagram amplified at E in Fig. 2；.

Specific embodiment

Front and back as described below is on the basis of tricycle direction of travel, before left side is as shown in figure 1, after right side is, perpendicular to Paper is left forward, is backward right perpendicular to paper.As shown in Figures 1 to 9, folding children's tricycle includes vehicle frame, before vehicle frame End is equipped with front fork 1, vehicle frame top is equipped with handlebar assembly, and front fork lower rotational is equipped with front-wheel 2, and being also equipped on front-wheel can drive The foot pedal of front-drive is equipped with vehicle seat 3 on vehicle frame.In the present embodiment vehicle frame include along the longitudinal direction setting and hollow master Bar 4, mobile jib front end are fixed with vertically arranged preceding installation set 5, are rotatably equipped with front steering pipe 6, the present embodiment in preceding installation set In radial clearance is equipped between preceding installation set inner surface and front steering tube outer surface, be set with preceding capping, forward in radial clearance Realize that the relative rotation between front steering Guan Yuqian installation set, preceding capping are packed in by bolt to Guan Yuqian capping clearance fit In preceding installation set.Preceding capping includes the preceding upper capping 7 and front lower capping 8 before being packed in respectively by bolt in installation set, forward The relative rotation between front steering pipe 6 and preceding installation set is realized to pipe 6 and preceding upper capping 7 and 8 clearance fits of front lower capping, it is front lower Capping 8, which is equipped with, clamps counterbore, and preceding upper capping 7, which is equipped with to be caught in, clamps 8 connection of upper capping 7 and front lower capping before counterbore is realized Fixed kelly.For the positioning convenient for preceding upper capping 7, the outer surface of front steering pipe 6 is equipped with land 9, when assembling, preceding upper capping 7 From top to bottom be set with, when lower end is stuck in land before upper capping 7 be installed in place.

The breeches pipe 10 on front fork top is sleeved in front steering pipe 6 and rotates synchronously with front steering pipe 6.Breeches pipe in the present embodiment Upper setting runs through the clamping bar 11 of breeches pipe two lateral walls, and the corresponding bar that clamps is equipped with for clamping bar on the tube wall of front steering pipe 6 It is caught in realize that the limit hole that front steering pipe 6 and breeches pipe rotate synchronously, limit hole lower ending opening clamp convenient for being caught in clamping bar The setting of bar both can guarantee that front steering pipe 6 and breeches pipe rotated synchronously, and the positioning of breeches pipe is also facilitated to be convenient for the installation of subsequent breeches pipe.Vehicle Be mounted on mobile jib front end what component lower end can fold backward formula, specific structure is as follows: breeches pipe upper end passes through through setting Bolt is fixed with handlebar fixing seat 12 and is fixedly mounted with simultaneously with 6 upper end of front steering pipe, and 12 open rearward end of handlebar fixing seat is convenient for handlebar Component folds backward, and handlebar assembly includes that its lower end is equipped with the handlebar 13 of casing, is sleeved in casing and casing is stretched out in its lower end The inner sleeve 14 of lower end by return spring 15 that inner sleeve 14 is fitted in casing and is sleeved on the handlebar of outside of sleeve and shakes hands 16, be in normal condition when 14 lower end of inner sleeve can be inserted into breeches pipe in, for improve upper element connection stability, breeches pipe with Top between front steering pipe 6 is set with enhancing set 17, and enhancing set 17 is arranged in the part for stretching out breeches pipe top in its inner surface Cyclic annular convex, cyclic annular convex internal diameter is consistent with the internal diameter of breeches pipe, and the length for being set with 14 lower end of inner sleeve and lower fixture increases, Enhance handlebar connection fastness, inner sleeve 14 and handlebar knob 16 pass through fixing bolt 20 be fixedly mounted with, 14 lower end edge of inner sleeve its Axial that lower adjustment hole in long strip is symmetrically arranged on its side wall, handlebar fixing seat 12, which is equipped with, to be penetrated in two lower adjustment holes Gag lever post 19 corresponds to 20 installation place of fixing bolt on casing and is equipped with the adjustment apertures being adapted with lower adjustment hole length.For enhancing The intensity of handlebar connection, is equipped with reinforcing sleeve 18 between casing and inner sleeve 14, reinforcing sleeve 18 is packed on casing, works as handlebar When in normal condition, inner sleeve 14 is pushed the fixation that inner sleeve 14 is inserted into realization handlebar in breeches pipe by return spring 15, is folded When, handlebar knob 16 is lifted upwards, and fixing bolt 20 is moved up along adjustment apertures, and lower adjustment hole slides up along gag lever post 19 Dynamic, by inner sleeve 14, compression retracteding position spring 15,14 lower end of inner sleeve are detached from handlebar knob 16 from breeches pipe simultaneously for lifting upwards, then It rotates backward around gag lever post 19 and realizes foling backward for handlebar assembly.

Vehicle frame rear end is equipped with rear wheel frame, vehicle frame upper rear end is equipped with for carrying out tricycle and controlling tricycle walking The push rod in direction is rotatably equipped with rear-wheel 22 on rear wheel frame, and rear wheel frame is rotatably installed in 4 rear end of mobile jib, and being equipped on push rod can By rear wheel frame locking to make rear-wheel bottom surface and lockable mechanism of the front-wheel bottom surface in same level.Push rod includes that can synchronize to turn Dynamic lower push-rod and upper push-rod, upper push-rod can fold forward connecting with lower push-rod for formula.Mobile jib end is fixed with vertically arranged Installation set 23 afterwards are rotatably equipped with rear steering pipe 24 in rear installation set 23, and the left and right sides of front steering pipe 6 is fixed with left-hand rotation respectively To bar 21, right turn bar, left steering bar 21 and right turn bar are threaded through in mobile jib, and the rear end of left steering bar is packed in rear steering pipe 24 left side, the rear end of right turn bar are packed in the right side on rear steering pipe 24.23 inner surface of installation set and rear steering pipe 24 afterwards It is equipped with radial clearance between outer surface, rear seal-cover is set in radial clearance, rear steering pipe 24 and rear seal-cover clearance fit are realized Relative rotation between rear steering pipe 24 and rear installation set 23；Rear seal-cover is packed in rear installation set 23 by bolt.Rear seal-cover Including the rear upper capping 25 and rear lower capping 26, rear steering pipe 24 and rear upper envelope being packed in respectively by bolt in rear installation set 23 Lid 25 and 26 clearance fits of rear lower capping realize the relative rotation between rear steering pipe 24 and rear installation set 23, afterwards in lower capping 26 Equipped with clamping counterbore, rear upper capping 25 is connected and fixed equipped with that can be caught in upper capping 25 and lower capping 26 afterwards after clamping counterbore is realized Kelly.For the positioning of capping 25 upper convenient for after, the outer surface of rear steering pipe 24 is equipped with land 9, when assembling, rear upper capping 25 by Up to lower suit, when lower end is stuck in land after upper capping 25 be installed in place.

Rear wheel frame includes left rear wheel bar and off hind wheel bar 27, is sequentially connected from the front to the back between left rear wheel bar and off hind wheel bar There are master connecting-rod 28 and back link 29, master connecting-rod 28 is connect with mobile jib rear end thereof, and rotation connection structure selects the prior art, herein It repeats no more, the rear end of left rear wheel bar and off hind wheel bar is separately installed with rear-wheel.Lower push-rod is sleeved in rear steering pipe 24 and leads to The fixing axle 30 crossed through the two is connected and fixed, and 51 top of lower push-rod is stretched out rear steering pipe 24 and is arranged in extension end cylindrical Folding head 31, fold head 31 and be arranged in left-right direction, the lower end of upper push-rod is equipped with to be sleeved on and folds on head 31 and opposite can roll over The foldable base 33 that folded head 31 folds forward folds head and foldable base and is rotatablely connected by the shaft 32 through the two, upper push-rod 34 Top is set with ejector sleeve 35, and upper 35 top of ejector sleeve is equipped with handle 36, its lower end is set in upper ejector sleeve can be caught in folding head 31 On the folding position-limiting tube 37 of upper push-rod Yu lower push-rod position restriction is realized in the limit hole that opens up, being set on upper ejector sleeve can Control folds the position of position-limiting tube 37 to control the push rod of upper push-rod locking opposite with lower push-rod or relative rotation and shake hands 38, It is set with casing 39 in middle folding position-limiting tube 37, folds position-limiting tube 37 and upper casing 39 passes through through folding position-limiting tube 37 and upper The fixed link 40 of casing 39 is fixedly connected, upper 39 upper end of casing stretch out fold position-limiting tube 37 and its top by fixing axle 41 with Push rod knob 38 is fixedly connected, and upper casing 39, which is stretched out on top on the pipeline section for folding position-limiting tube 37, is set with reset spring 42, The upper end of middle upper push-rod is equipped with the limit plate 43 of annular to limiting at the top of reset spring 42, and upper casing 39 is along its axial direction at it Slip hole in long strip is opened up in two lateral walls, upper ejector sleeve corresponds to slip hole setting circular hole and wears guiding in circular hole Bar, guide rod pass through two slip holes, realize the limit to upper about 39 sliding displacement of casing.Lockable mechanism include be mounted on after under 26 lower ends are covered, be may be stuck on back link 29 and realized the locking of rear-wheel rack position and the realization rear wheel frame unlock of back link 29 can be detached from Stay hook 44, stay hook 44 is U-shaped in front opening, and the upper end in lower capping 26, is set after being mounted in by the hinge of hinged shaft 45 on push rod There is the control mechanism of control 44 state of stay hook.Control mechanism includes the bracing wire connecting with push rod knob 38, and bracing wire upper end is fixedly mounted with In fixing axle 41, the lower end and 44 rear end of stay hook of bracing wire are affixed.44 rear end of the present embodiment stay hook is arranged in left-right direction The perforating being connected to through-hole upper end is arranged in the through-hole of setting, the interior columned fixed block 46 of setting of through-hole, 44 upper end of stay hook, 47 lower end of bracing wire passes through perforating and fixed block 46 is affixed, and bracing wire is set in lower end and holds out against spring 52 for locking stay hook 44 Tightly on back link 29.When need to fold, push rod knob 38 is lifted upwards, and push rod shakes hands 38 Foldable position-limiting tubes 37 along guide rod It moves up, folds 37 lower end of position-limiting tube and be detached from out of limit hole that fold head 31, unlock lower push-rod, it at this time can be by upper push-rod Overturning folds forward, while the 38 drive bracing wire of push rod knob moves up, and drives 44 reverse flip of stay hook, stay hook 44 is opened Mouth is detached from back link 29, unlocks rear wheel frame, rear wheel frame can fold forward at this time, to realize the folding of rear wheel frame and push rod It is folded.When need to open car body, rear wheel frame, push rod are rotate in place, under the action of reset spring 42 is with spring 52 are held out against, folded The open card that the insertion of position-limiting tube 37 folds the limit hole of head 31, stay hook 44 realizes the assembling of car body on back link 29.This In utility model, the folding of push rod and the unlock of rear wheel frame are controlled simultaneously by push rod knob 38, such control mode, structure letter It is single, assembling, folding convenient.

On vehicle frame vehicle seat rear it is turnable the backrest 48 being connected as one and gear fluffy 49 are installed, keep off fluffy rear end with Upper push-rod is fixedly mounted with.Drive that backrest stopper is fluffy folds forward when upper push-rod folds forward.For convenience of use, set in the rear end of foldable base There is hook, the rear basket 50 for contain things is installed on hook.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model.Previous embodiment The utility model is described in detail, it for those skilled in the art, still can be to aforementioned each implementation Technical solution documented by example is modified or equivalent replacement of some of the technical features.In every case practical new at this Within the scope of the inventive concept of type, any modification, equivalent substitution, improvement and etc. done are all contained in the protection of the utility model Within the scope of.

Claims (10)

1. a kind of folding children's tricycle, including vehicle frame, the vehicle frame front end is equipped with front fork, vehicle frame top is equipped with handlebar assembly, The front fork lower rotational is equipped with front-wheel, and vehicle seat is equipped on the vehicle frame, and the vehicle frame rear end is equipped with rear wheel frame, vehicle frame Upper rear end is equipped with for carrying out tricycle and controlling the push rod of tricycle direction of travel, is rotatably equipped on the rear wheel frame Rear-wheel, it is characterized in that the vehicle frame includes the mobile jib being arranged along the longitudinal direction, the mobile jib front end be fixed with it is vertically arranged before Installation set, rear end are fixed with vertically arranged rear installation set, before the breeches pipe on the front fork top is mounted in installation set, the vehicle It is mounted on mobile jib front end what component lower end can fold backward formula, the rear wheel frame is rotatably installed in mobile jib rear end, the push rod On be equipped with can be by rear wheel frame locking to making rear-wheel bottom surface and lockable mechanism of the front-wheel bottom surface in same level；It is described to push away Bar includes the lower push-rod and upper push-rod that can be rotated synchronously, and the upper push-rod can fold forward connecting with lower push-rod for formula.

2. folding children's tricycle according to claim 1, it is characterized in that being rotatably equipped with forward in the preceding installation set Xiang Guan is rotatably equipped with rear steering pipe in installation set after described, and the left and right sides of the front steering pipe is fixed with left steering respectively Bar, right turn bar, the left steering bar and right turn bar are threaded through in mobile jib, the rear end point of the left steering bar and right turn bar It is not packed on rear steering pipe；The breeches pipe is sleeved in front steering pipe and rotates synchronously with front steering pipe.

3. folding children's tricycle according to claim 2, it is characterized in that the breeches pipe upper end is fixed with handlebar fixing seat, The handlebar assembly includes that its lower end is equipped with the handlebar of casing, is sleeved in casing and the inner sleeve of lower end is stretched out in its lower end Pipe by return spring that inner sleeve is fitted in casing and is sleeved on the handlebar of outside of sleeve and shakes hands, the inner sleeve and handlebar Knob is fixedly mounted with by fixing bolt, and described its axial direction of inner sleeve lower end edge is symmetrically arranged with lower adjusting in long strip on its side wall Hole, the handlebar fixing seat are equipped with the gag lever post penetrated in two lower adjustment holes, correspond to fixing bolt installation place in described sleeve pipe Equipped with the adjustment apertures being adapted with lower adjustment hole length, it is equipped on rear side of the handlebar fixing seat and is foldd backward for handlebar assembly Opening.

4. folding children's tricycle according to claim 2, it is characterized in that after the rear wheel frame includes left rear wheel bar and is right Take turns bar, be connected with master connecting-rod and back link between the left rear wheel bar and off hind wheel bar in turn from the front to the back, the master connecting-rod with The rear end of the connection of mobile jib rear end thereof, the left rear wheel bar and off hind wheel bar is separately installed with rear-wheel；The lower push-rod is sleeved on In rear steering pipe, the lower push-rod top stretches out rear steering pipe and cylindrical folding head, the folding is arranged in extension end Head is arranged in left-right direction, and the lower end of the upper push-rod is equipped with to be sleeved on and fold on head and can the folding that folds forward of head folded against Seat is folded, its lower end is set in the upper push-rod can be caught in the limit hole for folding and opening up on head to realize that upper push-rod is pushed away under The folding position-limiting tube of bar position restriction is set with the controllable position for folding position-limiting tube on the upper push-rod to control upper push-rod Locking opposite with lower push-rod or the push rod of relative rotation knob；The lockable mechanism includes after being mounted on mobile jib rear end, may be stuck in The locking of rear-wheel rack position is realized on connecting rod and can be detached from the stay hook that back link realizes rear wheel frame unlock, and the push rod is equipped with control The control mechanism of stay hook state processed.

5. folding children's tricycle according to claim 4, it is characterized in that the stay hook is in the U-shaped of front opening, Upper end hinge is mounted in mobile jib rear end, and the control mechanism includes the bracing wire with push rod knob connection, the lower end of the bracing wire and fixation The connection of hook rear end.

6. the folding children's tricycle according to any one of claim 2 to 5, it is characterized in that on the vehicle frame after vehicle seat Can rotary type the backrest that is connected as one be installed and keep off fluffy, the fluffy rear end of gear is fixedly mounted with upper push-rod.

7. folding children's tricycle according to claim 6, it is characterized in that the preceding installation set inner surface and front steering pipe It is equipped with radial clearance between outer surface, preceding capping is set in the radial clearance, front steering Guan Yuqian capping gap is matched Close the relative rotation realized between front steering Guan Yuqian installation set；Before capping is packed in by bolt before described in installation set.

8. folding children's tricycle according to claim 7, it is characterized in that capping includes solid by bolt respectively before described Upper capping and front lower capping before in preceding installation set, capping and front lower capping clearance fit reality on the front steering Guan Yuqian Relative rotation between existing front steering Guan Yuqian installation set, the front lower capping, which is equipped with, clamps counterbore, before described in upper capping The preceding upper kelly covered and front lower capping is connected and fixed of counterbore realization is clamped equipped with that can be caught in.

9. folding children's tricycle according to claim 6, it is characterized in that installation set inner surface and rear steering pipe after described It is equipped with radial clearance between outer surface, is set with rear seal-cover in the radial clearance, the rear steering pipe is matched with rear seal-cover gap Close the relative rotation realized between rear steering Guan Yuhou installation set；The rear seal-cover is packed in rear installation set by bolt.

10. folding children's tricycle according to claim 9, it is characterized in that the rear seal-cover includes solid by bolt respectively Rear upper cover in rear installation set covers with lower afterwards, covers on the rear steering Guan Yuhou and covers clearance fit reality with lower afterwards Relative rotation between existing rear steering Guan Yuhou installation set, lower capping, which is equipped with, after described clamps counterbore, after described in upper capping It clamps after counterbore is realized upper capping equipped with that can be caught in and covers the kelly being connected and fixed down afterwards.