CN207697788U - Cradle head and children trolley with it - Google Patents

Abstract

The utility model discloses a kind of cradle head and children trolleys, wherein cradle head includes three cradling pieces of connection of rotating, for by the locking mechanism of three holder rod locks, cradling piece described in three is respectively the pedestal bar with base portion, the first bar with first connecting portion and the second bar with second connecting portion, it is equipped in cradle head for by the first lock construction of base portion and first connecting portion mutually locking and for by the second lock construction of first connecting portion and second connecting portion mutually locking, base shaft locating part is also set up in cradle head makes base shaft in the first bar, second bar can carry out the adjustment of operating position in limit range when locking relatively.When more rod pieces of the cradle head on such as children trolley, baby seat pocket, basket cot articles for children connect, it enables to certain rod pieces on articles for children that can be stayed open in juvenile product and stablize the adjustment and conversion that carry out operating position while carrying, facility is brought for user.

Description

Cradle head and children trolley with it

Technical field

The utility model is related to a kind of cradle head and with its children trolley.

Background technology

In the prior art, such as children trolley, baby seat pocket, basket cot articles for children are because mostly using greatly folding knot Structure, the rotate mode of connection of generally use plurality of rods part realize opposite expansion and the folding between rod piece.To realize youngster The needs of more use states of virgin product, the structure of cradle head play the role of vital.

Invention content

The shortcomings that the purpose of this utility model is to overcome the prior arts provides a kind of new structural cradle head, For the rotation connection of more rod pieces on the articles for children such as such as children trolley, seat pocket, bed.

In order to achieve the above objectives, the technical solution adopted in the utility model is：A kind of cradle head, including the connection that rotates Three cradling pieces, for by the locking mechanism of three holder rod locks, the cradling piece described in three is respectively to have base The base shaft of portions, the first bar with first connecting portion and the second bar with second connecting portion, the base portion and described the One interconnecting piece rotates connection, the second connecting portion and the first connecting portion in the second rotation around the first rotary centerline Heart line rotates connection, and first rotary centerline, the second rotary centerline are mutually parallel or collinearly extend, the locking machine Structure include for by the base portion with the first lock construction of the first connecting portion mutually locking and for connecting described first Second lock construction of socket part and second connecting portion mutually locking is equipped with base shaft limit assembly, the base in the cradle head Bar limit assembly include be set to the base portion on and rotate with it base shaft locating part, be set to the first connecting portion on and energy The enough and matched driving sliding block of the base shaft locating part,

The base shaft has the first rotation section and the second rotation at it in the rotational travel of first rotary centerline Turn section, the driving sliding block has the first restraining position and the second restraining position on its sliding path so that the base shaft Accordingly there is the first operating position and the second operating position when being rotated in first rotation section, when the base shaft is in institute When stating rotation in the first rotation section, the base shaft locating part is matched with the driving sliding block, and second lock construction is protected Hold locking；When the base shaft runs off first operating position or the second operating position enters the second rotation section, institute It states base shaft locating part and is detached from the driving sliding block and coordinated, and drive the second lock construction solution when the base shaft rotary motion Lock.

Preferably, it is equipped in the cradle head and coordinates for driving the base shaft locating part to be detached from the driving sliding block Limit unlocking structure, it is described limit unlocking structure unlock prior to second lock construction unlock.

Further, the base shaft locating part is slidably set to described along the direction for being parallel to first rotary centerline In base portion, the end of the base shaft locating part towards the driving sliding block is equipped with spacing block set, has on the driving sliding block There are the guide chute slipped fit inserted into for the spacing block set, the spacing block set that can ordinatedly be plugged in the guiding It can slide in sliding slot and along the guide chute.

Further, the unlock piece for unlocking first lock construction, the solution are equipped in the cradle head Latch fitting includes the solution lock slide being slidably set in the base portion, and the glide direction of the solution lock slide is perpendicular to described first Rotary centerline, the limit unlocking structure include the driving inclined-plane being set on the solution lock slide and are limited set on the base shaft Cooperation inclined-plane on part continues to slide after so that first lock construction is unlocked when the solution lock slide slides along direction movement When, the driving inclined-plane merges with cooperation inclined-plane matching drives the base shaft locating part far from the driving slide block movement.

Preferably, first lock construction include along first rotary centerline slidably be set to the base portion with First between the first connecting portion locks fluted disc, becomes towards base portion sliding for providing the first locking fluted disc First lock elastic component of elastic force needed for gesture, described first locks with multiple first locks teeth in the outside circumference of fluted disc, described The lower end of base portion is equipped with to be equipped with multiple first lock matched multiple first locked grooves of tooth, the first connecting portion With multiple first lock matched multiple second locked grooves of tooth, when first lock construction locks, multiple first locks teeth It is matched simultaneously with multiple first locked grooves, the second locked groove, when first lock construction unlocks, multiple first lock teeth It is detached from and coordinates with multiple first locked grooves；

Second lock construction include along second rotary centerline slidably be set to the second connecting portion with it is described Second between first connecting portion locks fluted disc, becomes towards first connecting portion sliding for providing the second locking fluted disc Second lock elastic component of elastic force needed for gesture, described second locks with multiple second locks teeth in the outside circumference of fluted disc, described First connecting portion is equipped with and multiple second lock matched multiple third locked grooves of tooth, the upper end of the second connecting portion Matched multiple 4th locked grooves of tooth are locked with described second equipped with multiple, when second lock construction locks, the second lock tooth It is matched simultaneously with multiple third locked grooves, the 4th locked groove, when second lock construction unlocks, multiple second lock teeth It is detached from and coordinates with multiple third locked grooves.

Further, the first unlock actuator and the second unlock actuator, first solution are equipped in the cradle head Lock actuator slides along first rotary centerline and can rotatably be set to the base portion around first rotary centerline On, the first locking fluted disc is resisted against on the first unlock actuator；The second unlock actuator is along described second turn Dynamic center line is slided and can be rotatably set in the first connecting portion around second rotary centerline, second locking teeth Disk is resisted against on the second unlock actuator, and the second unlock actuator is equipped at least one unlock protrusion, and described the The sliding being slidingly fitted with the unlock protrusion is equipped on one unlock actuator towards the side of the first connecting portion to match Conjunction portion and guiding surface, when the unlock protrusion slides into the guiding surface by the portion of being slidably matched, second solution Lock actuator slides and the second unlock actuator is driven to be moved far from the second connecting portion and make the second lock knot Structure unlocks.

Further, it is additionally provided in the cradle head for driving the unlock of the first unlock actuator sliding to be slided Block, the solution lock slide are slidably set in the base portion, and the glide direction of the solution lock slide is perpendicular to described first turn Dynamic center line, the solution lock slide are equipped with the first unlock inclined-plane, and the first unlock actuator is equipped with and first solution Lock inclined-plane matched second unlock inclined-plane, when the unlock slide block movement described in the first unlock inclined-plane and second unlock inclined-plane phase Cooperation drives the first unlock actuator to be slided along first rotary centerline.

The another object of the utility model is to provide a kind of children trolley using above-mentioned cradle head.

In order to achieve the above objectives, the technical solution adopted in the utility model is：A kind of children trolley, including there is expansion shape The stroller frame of state and folded state, the stroller frame include push-rod frame, fore-stock and after-poppet, the bottom of the fore-stock Equipped with front component, the bottom of the after-poppet is equipped with wheel assembly, the upper end of the fore-stock, the upper end of after-poppet and It is pivotally connected together each other by such as above-mentioned cradle head between the lower end of the push-rod frame, wherein described Push-rod frame is the base shaft.

Preferably, the front component includes the front-wheel connector for being set to the fore-stock and being rotatablely connected around front steering axis, institute It states and is equipped with front-wheel orientation assemblies between fore-stock and the front-wheel connector, the wheel assembly includes with the after-poppet around rear turn The trailing wheel connector being rotatablely connected to axis, is equipped with trailing wheel orientation assemblies, the front-wheel between the after-poppet and the trailing wheel connector Orientation assemblies are respectively provided with the directional lock shape of reverse blocking state state capable of free rotation and steering locking with trailing wheel orientation assemblies State,

When the push-rod frame is in first operating position, updip extends and is in just the push-rod frame from front to back To operating position, the driving sliding block matches with the trailing wheel orientation assemblies and is at directional lock state, before described Orientation assemblies are taken turns to be detached from cooperation with the driving sliding block and be in reverse blocking state state；When the push-rod frame is in second work When making position, updip extends and is in reverse operation position the push-rod frame from back to front, the driving sliding block and the front-wheel Orientation assemblies match and are at directional lock state, the trailing wheel orientation assemblies and the driving sliding block be detached from coordinate and In reverse blocking state state；When the stroller frame be in unfolded state and the push-rod frame be located at the positive operating position with When between reverse operation position, the front-wheel orientation assemblies, trailing wheel orientation assemblies are separated with the driving sliding block and are divided respectively It is not in reverse blocking state state.

Further, the front-wheel orientation assemblies include that can be arranged towards or away from the front-wheel joint motion in institute State the preceding directional of fore-stock bottom, for providing preceding orientation bullet of the preceding directional towards the front-wheel joint motion trend Property part, along the fore-stock length extending direction up and down be set to the fore-stock on front-slider, for providing It states front-slider and moves upwards the preceding locking elastic part of trend, and before being connected between the preceding directional and the front-slider Connector, the front-wheel connector are equipped with the preceding guide slot being fittingly inserted into for the preceding directional；

The trailing wheel orientation assemblies include that holder in the rear can be arranged towards or away from the trailing wheel joint motion The rear directional of bottom, for provide it is described after directional towards the rear orientation elastic component of the trailing wheel joint motion trend, edge The length extending direction of the after-poppet up and down be set to the after-poppet on rear slider, for providing the rear slider The rear locking elastic part of trend is moved upwards, and connects the rear connectors between directional and the rear slider in the rear, The trailing wheel connector is equipped with the rear guide slot being fittingly inserted into for the rear directional；

When the push-rod frame is in the positive operating position, the driving sliding block is resisted against on the rear slider and makes Its downlink, the rear directional ordinatedly plug in guide slot in the rear and the trailing wheel orientation assemblies are made to be in directional lock State, the driving sliding block are separated with the front-slider；When the push-rod frame is in the reverse operation position, the drive Movable slider is resisted against on the front-slider and makes its downlink, and the preceding directional is ordinatedly plugged in the preceding guide slot and makes The front-wheel orientation assemblies are in directional lock state, and the driving sliding block is separated with the rear slider.

Further, the upper end of the fore-stock is equipped with preceding protrusion, and the upper end of the after-poppet is equipped with rear convex Portion, when the stroller frame is in folded state, the fore-stock is mutually drawn close with after-poppet, and the preceding protrusion is pressed on institute State on rear slider, it is described after protrusion be pressed on the front-slider, respectively so that the trailing wheel orientation assemblies, front-wheel orientation assemblies In directional lock state.

Due to the application of the above technical scheme, the utility model has following advantages compared with prior art：This practicality is new The cradle head of type is mainly used for the mutual rotation connection between base shaft, the first bar and the second bar this three cradling pieces and lock Fixed, wherein cradle head is rotatablely connected base portion, the second connecting portion of the first connecting portion and the second bar of the first bar of base shaft, leads to Cross be arranged in cradle head base shaft locating part make base shaft the first bar, the second bar is opposite lock when can in limit range into The adjustment of row operating position.More rod pieces of the cradle head on such as children trolley, baby seat pocket, basket cot articles for children When connection, enables to certain rod pieces on articles for children that can be stayed open in juvenile product and carried out with while stablizing carrying The adjustment and conversion of operating position bring facility for user.

Description of the drawings

Attached drawing 1 is the stereogram of the children trolley forward direction unfolded state of the present embodiment once；

Attached drawing 2 is the side view of attached drawing 1；

Attached drawing 3 is the side view under the children trolley forward direction unfolded state two of the present embodiment；

Attached drawing 4 is the side view under the children trolley forward direction unfolded state three of the present embodiment；

Attached drawing 5 is the side view of the reversed unfolded state of children trolley of the present embodiment once；

Attached drawing 6 is the side view under the reversed unfolded state of children trolley two of the present embodiment；

Attached drawing 7 is the side view under the reversed unfolded state of children trolley three of the present embodiment；

Attached drawing 8 is the stereogram in the children trolley commutation process of the present embodiment；

Attached drawing 9 is the side view of attached drawing 8；

Side view when attached drawing 10 is the children trolley forward folded of the present embodiment under semi-collapsed condition；

Side view when attached drawing 11 is the children trolley forward folded of the present embodiment under folded state；

Attached drawing 12 is the side view of semi-collapsed condition one when the children trolley of the present embodiment is reverse folded；

Attached drawing 13 is the side view of semi-collapsed condition two when the children trolley of the present embodiment is reverse folded；

Attached drawing 14 is the side view under folded state when the children trolley of the present embodiment is reverse folded；

Attached drawing 15 is the stereogram under folded state when the children trolley of the present embodiment is reverse folded；

Attached drawing 16 is the rearview under folded state when the children trolley of the present embodiment is reverse folded；

Attached drawing 17 be along attached drawing 16 M-M to schematic cross-sectional view；

Attached drawing 18 is the structural decomposition diagram one of the cradle head used on the children trolley of the present embodiment；

Attached drawing 19 is the structural decomposition diagram two of the cradle head of attached drawing 18；

Attached drawing 20 be attached drawing 18 cradle head in solve lock slide stereogram；

The stereogram one that attached drawing 21 unlocks actuator in the cradle head of attached drawing 18 first；

The stereogram two that attached drawing 22 unlocks actuator in the cradle head of attached drawing 18 first；

Attached drawing 23 is base portion in the cradle head of attached drawing 18 and solution lock slide and the mating schematic diagram of base shaft locating part；

Attached drawing 24 is the partial schematic sectional view of the stroller frame of the children trolley of the present embodiment；

Attached drawing 25 is the portions P enlarged diagram in attached drawing 24；

Attached drawing 26 is the side view of cradle head when stroller frame forward direction is opened；

Attached drawing 27 be along attached drawing 26 A-A to section view enlarged structure schematic diagram；

Attached drawing 28 is the transverse cross sectional enlarged diagram of attached drawing 26；

Attached drawing 29 is the mating relation schematic diagram of driving sliding block and front-slider and rear slider in attached drawing 28；

Attached drawing 30 is the side view of cradle head when stroller frame is in commutation centre position；

Attached drawing 31 is the B-B direction schematic cross-sectional view along attached drawing 30；

Attached drawing 32 is the transverse cross sectional schematic diagram of attached drawing 30；

The side view of cradle head when attached drawing 33 is stroller frame reverse opening；

Attached drawing 34 be along attached drawing 33 C-C to schematic cross-sectional view；

Attached drawing 35 be along attached drawing 34 D-D to schematic cross-sectional view；

Attached drawing 36 be along attached drawing 34 E-E to schematic cross-sectional view；

Attached drawing 37 is the side view of cradle head when stroller frame is in forward folded position；

Attached drawing 38 is the F-F along attached drawing 37 to sectional structure enlarged diagram；

Attached drawing 39 is the transverse cross sectional schematic diagram of attached drawing 37；

Attached drawing 40 is the side view of cradle head when stroller frame is in reverse folded position；

Attached drawing 41 is the transverse cross sectional schematic diagram of attached drawing 40；

Wherein：100, stroller frame；10, after-poppet（First bar）；101, first connecting portion；101a, rear protrusion；10a, Two locked grooves；10b, third locked groove；10c, perforation；

20, fore-stock（Second bar）；201, second connecting portion；201a, preceding protrusion；20a, the 4th locked groove；202, pedestal；

30, push-rod frame（Base shaft）；301, base portion；30a, the first locked groove；

40, front component；401, front-slider；402, preceding locking elastic part；403, front connector；

50, wheel assembly；501, rear slider；502, rear locking elastic part；503, rear connectors；504, rear steering axis； 505, trailing wheel connector；506, rear directional（Orienting pin afterwards）；507, elastic component is oriented afterwards；

200, cradle head；300, seat pocket frame；3001, the first railing；3002, the second railing；3003, bar；3004、 Link；400, seat pocket cradle head；

123, shaft；1, the first locking fluted disc；1a, the first lock tooth；1b, perforation；

2, the first lock elastic component；3, the first unlock actuator；31, be slidably matched portion；32, guiding surface；33, the second unlock Inclined-plane；

4, the second locking fluted disc；41, the second lock tooth；5, the second lock elastic component；

6, the second unlock actuator；61, protrusion is unlocked；

7, sliding block is driven；71, guide chute；72, end is driven；73, cotter way is limited；

8, base shaft locating part；81, spacing block set；82, coordinate inclined-plane；

9, lock slide is solved；91, the first unlock inclined-plane；92, limit sliding chutes；93, driving inclined-plane.

Specific implementation mode

The technical solution of the utility model is further elaborated in the following with reference to the drawings and specific embodiments.

Referring to children trolley shown in Fig. 1 to Figure 16 comprising the stroller frame 100 with unfolded state and folded state With folding seat pocket frame 300, stroller frame 100 includes push-rod frame 30, fore-stock 20 and after-poppet 10, the bottom of fore-stock 20 Equipped with front component 40, the bottom of after-poppet 10 is equipped with wheel assembly 50, preceding on every side of 100 left and right sides of stroller frame Pass through the cradle head of the utility model between the lower end of the upper end of holder 20, the upper end of after-poppet 10 and push-rod frame 30 200 are pivotally connected together each other.

Join shown in each attached drawing, in cradle head 200, the spaced winding of the lower end of push-rod frame 30 and the upper end of after-poppet 10 the One rotary centerline rotatedly connects, the second center of rotation of spaced winding of the upper end of after-poppet 10 and the upper end of fore-stock 20 Line rotatedly connects, and above-mentioned first rotary centerline is mutually parallel with the second rotary centerline or collinearly extends.In this implementation In example, above-mentioned first rotary centerline and the second rotary centerline are conllinear extension, the i.e. lower end of push-rod frame 30, after-poppet 10 Upper end and the same rotary centerline of spaced winding of upper end of fore-stock 20 be mutually pivotally connected together, lead between three Cradle head 200 is crossed to be rotatablely connected.

By using the cradle head 200, the stroller frame 100 can between following multiple operating positions or state into Row conversion：When stroller frame 100 is in unfolded state, push-rod frame 30 has the first operating position and the in its rotational travel Two operating positions, first operating position, that is, gradual updip extension from front to back of push-rod frame 30 as shown in Figures 1 to 4 herein Positive operating position, the reverse operation position that the second operating position, that is, push-rod frame 30 as shown in Figures 5 to 7 extends from back to front It sets.

The stroller frame 100 is collapsed with push-rod frame 30 in the forward folded position of 10 rear side of after-poppet in folded state It sets, is collapsed as shown in Figure 11,12 with push-rod frame 30 in the reverse folded position of 20 front side of fore-stock, as shown in Figure 12 to Figure 16.

Seat pocket frame 300 is mounted on by seat pocket care frame in stroller frame 100, is collapsed before fore-stock 20 when folding Side, as shown in Figure 10 to Figure 16.This pocket frame 300 has the first railing 3001 and the second railing for including at least the connection that rotates 3002 peripheral frame frame, peripheral frame frame further includes bar 3003 herein.Seat pocket care frame includes 202 He of pedestal of dismounting of can cooperating Link 3004, pedestal 202 are fixedly set on the upper end of fore-stock 20, and the pedestal 202 upwardly extends and and link 3004 lower end is removably coupled；The upper end of link 3004, the one end of the first railing 3001, the second railing 3002 One end and the one end of bar 3003 rotatedly linked together so as to opposite rotation by seat pocket cradle head 400 Turn to open and collapse.

It is equipped in seat pocket cradle head 400 for peripheral frame frame to be locked in respect to link 3004 under multiple operation ranges Seat pocket locking structure the first railing 3001 of peripheral frame frame, the second railing 3002 and is helped when seat pocket frame 300 is in unfolded state It can be rotated jointly relative to link 3004 when relative to locking between hand lever 3003, so that seat pocket frame 300 is mounted on cart There is multiple adjustable operating positions, sitting posture state, semi-lying state as shown in Fig. 2 to Fig. 7 when being used on vehicle frame 100 And full rest state, the different sitting postures to meet children adjust needs.The adjustment of 300 working condition of this pocket frame and stroller frame The adjustment of forward and reverse operating position of 100 upper push-rod framves 30 is independent from each other.

Shown in Fig. 1 to Figure 16, two groups of front components 40 and two groups of wheel assemblies 50 are universal wheel component, wherein Shown in Figure 17, wheel assembly 50 includes the trailing wheel connector 505 being rotatablely connected around rear steering axis 504 with after-poppet 10, rear to prop up Trailing wheel orientation assemblies are equipped between frame 10 and trailing wheel connector 505, which has reverse blocking state capable of free rotation The directional lock state of state and steering locking.

In the present embodiment, shown in Figure 17, which includes can be towards or away from trailing wheel connector 505 Movement ground, which is arranged, to be moved in the rear directional 506 of 10 bottom of after-poppet, for directional 506 after providing towards trailing wheel connector 505 The rear orientation elastic component 507 of trend offers the rear guide slot being fittingly inserted into for rear directional 506 on trailing wheel connector 505. Here, it is positioning pin that rear directional 506, which uses, and it is spring that rear orientation elastic component 507, which uses,.Shown in Figure 32, trailing wheel Orientation assemblies further include along after-poppet 10 length extending direction up and down be set to after-poppet 10 on rear slider 501, use The rear locking elastic part 502 of trend is moved upwards in providing rear slider 501, and is connected to rear directional 506 and rear slider 501 Between rear connectors 503, herein, rear connectors 503 be hauling rope, rear locking elastic part 502 also be spring, and after lock bullet Property part 502 elastic force be more than after orient elastic component 507 elastic force.

In this way, when without outer force effect, rear slider 501 has under the action of rear locking elastic part 502 along after-poppet 10 Capable trend, and lifted rear directional 506 by rear connectors 503 so that guide slot after rear directional 506 is detached from, to So that trailing wheel orientation assemblies are in reverse blocking state state, wheel assembly 50 is capable of free rotation；And working as has external force to act on rear slider 501 when making it be moved downward along after-poppet 10, and rear connectors 503 discharge the drawing to rear directional 506, and rear directional 506 is then After being fittingly inserted into downwards under the action of the elastic force of rear orientation elastic component 507 in guide slot so that trailing wheel orientation assemblies turn For directional lock state, wheel assembly 50 can not turn to and be only capable of being rotationally advancing along single direction at this time.

Similarly, not shown, front component 40 includes the front-wheel connector being rotatablely connected around front steering axis with fore-stock 20, preceding Front-wheel orientation assemblies are equipped between holder 20 and front-wheel connector, which also has reverse blocking state capable of free rotation The directional lock state of state and steering locking.The front-wheel orientation assemblies include that can be set towards or away from front-wheel joint motion It sets in the preceding directional of 20 bottom of fore-stock, the preceding orientation elasticity for directional before providing towards front-wheel joint motion trend Part offers the preceding guide slot being fittingly inserted into for preceding directional on front-wheel connector.Herein, what preceding directional used is also fixed Position pin, it is spring that preceding orientation elastic component, which uses,.Shown in Figure 28,32,36, front-wheel orientation assemblies further include along fore-stock 20 Length extending direction be set on fore-stock 20 up and down front-slider 401, for providing front-slider 401 move upwards The preceding locking elastic part 402 of gesture, and it is connected to preceding front connector 403 between directional and front-slider 401, herein, preceding company Fitting 403 is also hauling rope, and preceding locking elastic part 402 is also spring, and the elastic force of preceding locking elastic part 502 is more than preceding orientation The elastic force of elastic component.Equally similarly, when no external force acts on front-slider 401, front-wheel orientation assemblies are in reverse blocking state State；When there is external force to press front-slider 401 downwards, front-wheel orientation assemblies switch to directional lock state.

And it is above-mentioned for driving front-slider 401 with the movement of rear slider 501 and so that 50 quilt of front component 40 and wheel assembly Directional lock is also to be realized by the cradle head 200.

The concrete structure of the cradle head 200 used in the utility model detailed below and its in stroller frame 100 Operation principle in different working condition transfer process：

The cradle head 200 is for including the base shaft with base portion, the first bar with first connecting portion and with the The rotation connection of this three cradling pieces of second bar of two interconnecting pieces, in the present embodiment, shown in Figure 18 to Figure 41, base shaft corresponds to Ground is push-rod frame 30, and the first bar is after-poppet 10, and the second bar is fore-stock 20.Correspondingly, the lower end of push-rod frame 30 is pedestal The upper end in portion 301, after-poppet 10 is first connecting portion 101, and the upper end of fore-stock 20 is second connecting portion 201, above-mentioned Base portion 301, first connecting portion 101 and second connecting portion 201 are rotatablely connected by shaft 123, surround shaft 123 jointly Axial line is pivotally connected to together.

Base shaft limit assembly is equipped in the cradle head 200, shown in Figure 18, Figure 19, push rod limit assembly includes setting In in base portion 301 and rotate with it base shaft locating part 8, be set to first connecting portion 101 on and can be with 8 phase of base shaft locating part The driving sliding block 7 of cooperation.Base shaft its around the shaft 123 axial line rotation when rotational travel on have first rotation section with Second rotation section, driving sliding block 7 have the first restraining position and the second restraining position on its sliding path so that base shaft exists Accordingly there is the first operating position and the second operating position when being rotated in the first rotation section；When base shaft rotates section first When interior rotation, base shaft locating part 8 coordinates with driving sliding block 7；When base shaft runs off above-mentioned first operating position or the second operating position And when entering the second rotation section, base shaft locating part 8 is detached from driving sliding block 7 to be coordinated.

In the present embodiment, the base shaft limit assembly that is, the push rod limit assembly that push-rod frame 30 is limited, cart Under 100 unfolded state of vehicle frame, the positive operating position of push-rod frame 30 corresponds to the first work of above-mentioned base shaft with reverse operation position Make position and the second operating position, and push-rod frame 30 above fore-stock 20 and after-poppet 10 and in positive operating position and Rotation section between reverse operation position then corresponds to the first above-mentioned rotation section, and the is located in 30 rotating distance of push-rod frame Region other than one rotation section is the second rotation section.

When push-rod frame 30 is between positive operating position and reverse operation position, the base shaft locating part 8 and driving sliding block 7 It matches, and when push-rod frame 30 rotates, base shaft locating part 8 drives driving sliding block 7 in the first restraining position and the second limit position It is slided between setting；When push-rod frame 30 is in positive operating position, driving sliding block 7 is in the first restraining position, as shown in figure 28； When push-rod frame 30 is in reverse operation position, driving sliding block 7 is then in the second restraining position, as shown in figure 32.Can have in this way Rotational angle of effect ground when commutate to push-rod frame 30 limits, easypro when ensureing the forward and reverse implementation of cart to prevent its offside Adaptive.And when push-rod frame 30 runs off above-mentioned positive operating position or reverse operation position and will enter the second rotation section, Base shaft locating part 8 is detached from cooperation with driving sliding block 7, no longer to push-rod frame 30（That is base shaft）It is limited.

Shown in Figure 18,19 and 29, drives and set on sliding block 7 there are two cotter way 73 is limited, divided in two limit cotter ways 73 It She You not spacer pin（It is not shown in figure）, first connecting portion 101 also sets at corresponding first restraining position and the second restraining position It sets there are two cotter way, driving sliding block 7 drives spacer pin to slide together when being slided in first connecting portion 101, when spacer pin is along single When one direction is fallen into the cotter way in first connecting portion 101, driving sliding block 7 is accordingly limited in corresponding position, to It realizes to push-rod frame 30（Base shaft）Limit when commutation.

Conversion of the sliding block 7 between the first restraining position and the second restraining position is driven, while being also achieved to front wheels The automatic switchover of part 40 and wheel assembly 50 between directional lock and reverse blocking state state.Specifically, the both ends of sliding block 7 are driven For with front-slider 401 and the driving of rear slider 501 matched two ends 72, driving sliding block 7 is in the first restraining position and the respectively When being slided between two restraining positions, two of sliding block 7 driving ends 72 of driving can respectively with the rear slider 501 in after-poppet 10 Or the front-slider 401 in fore-stock 20 is coordinated, to apply rear slider 501 or the downward active force of front-slider 401.

Herein, it referring to shown in Fig. 1 to 4 and Figure 26,28, Figure 29, when push-rod frame 30 is in positive operating position, drives One of driving end 72 is resisted against on rear slider 501 and makes its downlink on movable slider 7 so that rear directional 506 is ordinatedly inserted It is located in rear guide slot and so that trailing wheel orientation assemblies are in directional lock state, drive another driving end on sliding block 7 at this time 72 are separated with front-slider 401 so that front-wheel orientation assemblies are in reverse blocking state state, also that is, push-rod frame 30 is in positive work When making position, front component 40 is capable of free rotation, and wheel assembly 50 is then directed locking and can not turn to.

On the contrary, referring to shown in Fig. 5,6,7 and Figure 33,36, when push-rod frame 30 is in reverse operation position, sliding block is driven 7 another above-mentioned driving end 72 is resisted against on front-slider 401 and makes its downlink so that preceding directional is fixed before being ordinatedly plugged in Make that front-wheel orientation assemblies are in directional lock state, drive sliding block 7 to be separated with rear slider 501 at this time into slot so that Trailing wheel orientation assemblies are in reverse blocking state state, and also that is, when push-rod frame 30 is in reverse operation position, wheel assembly 50 can be free It turns to, front component 40 is then directed locking and can not turn to.

And when push-rod frame 30 is located at the centre position between positive operating position and reverse operation position, referring to Fig. 8,9, 30, shown in 32, driving sliding block 7 is between the first restraining position and the second restraining position, and the driving sliding block 7 and front-slider 401, rear slider 501 is detached from respectively so that front-wheel orientation assemblies are respectively at reverse blocking state state with trailing wheel orientation assemblies, accordingly Ground front component 40 and wheel assembly 50 are the state freely turned to.In this way, when carrying out switch operation to push-rod frame 30, behaviour Author can stand directly on the side of cart and directly operate push-rod frame 30, when being rotated to above-mentioned centre position, behaviour Author directly pulls push-rod frame 30 and stroller frame is rotated integrally 180 °, then pushes push-rod frame 30 and push-rod frame 30 can be completed Switch operation so that operator no longer needs to go to front side on rear side of vehicle when push rod direction-changing is operated, and switch operation is more The convenience added.

It is equipped in the cradle head 200 for interlocking base portion 301, first connecting portion 101 and 201 phase of second connecting portion Fixed locking mechanism, the locking mechanism include for by the first lock construction of base portion 301 and 101 mutually locking of first connecting portion With for by the second lock construction of first connecting portion 101 and 201 mutually locking of second connecting portion.When push-rod frame 30 works in forward direction When being rotated between position and reverse operation position, the unlock of the first lock construction and the holding locking of the second lock construction keep cart vehicle Frame 100 is in expansion and stablizes the switch operation of progress push-rod frame 30 in the state of carrying；And when push-rod frame 30 is worked by forward direction When position is rotated to after-poppet 10 and when push-rod frame 30 is rotated from reverse operation position to fore-stock 10, that is, push-rod frame 30 When crossing the first rotation section into the second rotation section, push-rod frame 30 drives the unlock of the second lock construction, to realize cart vehicle The forward folded of frame 100 with it is reverse folded.

It is additionally provided in cradle head 200 for driving base shaft locating part 8 to be tied with the limit unlock for driving sliding block 7 to be detached from cooperation Structure, when stroller frame 100 is converted from unfolded state to folded state, i.e., push-rod frame 30 is from positive operating position to after-poppet 10 Rear side rotation collapse when and push-rod frame 30 from reverse operation position to the front side of fore-stock 20 rotate collapse when, it is above-mentioned Limit unlocking structure drive base shaft locating part 8 and driving sliding block 7 between be detached from coordinate, and base shaft locating part 8 with driving sliding block 7 it Between be detached from cooperation prior to the second lock construction unlock.

Specifically, referring to Figure 18, Figure 19, shown in Figure 26 to Figure 41, the first lock construction includes prolonging along the axial line of shaft 123 It stretches direction is slidably set between base portion 301 and first connecting portion 101 first and locks fluted disc 1, for providing the first locking Fluted disc 1 locks elastic component 2 towards first of elastic force needed for 301 tendency toward sliding of base portion, and first locks in the outside circumference of fluted disc 1 With multiple first lock tooth 1a, base portion 301 is equipped with and above-mentioned multiple first lock matched multiple first locked grooves of tooth 1a 30a, first connecting portion 101 are equipped with and multiple first lock tooth matched multiple second locked groove 10a of 1a, the locking of the first lock construction When, multiple first lock tooth 1a are matched with multiple first locked groove 30a, the second locked groove 10a simultaneously, i.e., and the two of multiple first lock tooth 1a End is embedded in multiple first locked groove 30a and the second locked groove 10a with being respectively cooperating with so that push-rod frame 30 is locked with respect to after-poppet 10 It is fixed；And when the first lock construction unlocks, multiple first lock tooth 1a and multiple first locked groove 30a, which are detached from, to be coordinated, at this time push-rod frame 30 It 123 can be rotated around the shaft relative to after-poppet 10.

Second lock construction includes the axial line extending direction along shaft 123 slidably set on first connecting portion 101 and second Second between interconnecting piece 201 locks fluted disc 4, for providing the second locking fluted disc 4 towards 101 tendency toward sliding institute of first connecting portion It needs the second of elastic force to lock elastic component 5, has multiple second to lock tooth 41, the first connection in the outside circumference of the second locking fluted disc 4 Portion 101 be equipped with it is multiple second lock the matched multiple third locked groove 10b of tooth 41, second connecting portion 201 be equipped with it is multiple with The second lock matched multiple 4th locked groove 20a of tooth 41, when the second lock construction locks, the second lock tooth 41 is locked with multiple thirds simultaneously Slot 10b, the 4th locked groove 20a are matched so that opposite locking between fore-stock 20 and after-poppet 10；When the second lock construction unlocks When, multiple second lock teeth 41 are detached from multiple third locked groove 10b to be coordinated so that can opposite rotation between fore-stock 20 and after-poppet 10 Turn.

It is equipped with the first unlock actuator 3 and second shown in Figure 18, Figure 19, in cradle head 200 and unlocks actuator 6, First unlock actuator 3 along shaft 123 axial line sliding and can around the shaft 123 axial line rotatably be set to base portion 301 On, the first locking fluted disc 1 is resisted against on the first unlock actuator 3.It is additionally provided in cradle head 200 for driving the first unlock to be driven The solution lock slide 9 that moving part 3 slides, the solution lock slide 9 are slidably set in base portion 301, and the glide direction for solving lock slide 9 is vertical In the axial line of shaft 123, shown in Figure 18,19,20,23, solution lock slide 9 is equipped with the first unlock inclined-plane 91, the first solution It locks actuator 3 to be equipped with the first unlock inclined-plane 91 matched second unlock inclined-plane 33, the first unlock when solution lock slide 9 moves Inclined-plane 91 matches with the second unlock inclined-plane 33 and the first unlock actuator 3 is driven to be slided along the axial line of shaft 123, to drive The first locking fluted disc 1 is set to overcome the elastic force of the first lock elastic component 2 and be moved far from base portion 301 and realize the first lock construction Unlock.

Second unlock actuator 6 along shaft 123 axial line sliding and can around the shaft 123 axial line be rotatably set to the On one interconnecting piece 101, the second locking fluted disc 4 is resisted against on the second unlock actuator 6, and the second unlock actuator 6 is equipped at least One unlock protrusion 61, it is two unlock protrusions 61 being spaced apart along 180 ° to be arranged herein.As shown in Figure 21,22,35, the It is equipped with towards the side of first connecting portion 101 on one unlock actuator 3 and is slidably matched with what unlock protrusion 61 was slidingly fitted Portion 31 and guiding surface 32, correspondingly, the portion 31 that is slidably matched are also configured as two groups with guiding surface 32.When the second lock construction is in When unlocked state, unlock protrusion 61 is located at corresponding be slidably matched in portion 31；When unlock protrusion 61 is slided by the portion of being slidably matched 31 When to guiding surface 32, second unlock actuator 6 slide and drive the second locking fluted disc 4 far from first connecting portion 101 movement and So that the unlock of the second lock construction.

Shown in Figure 18, Figure 19, the above-mentioned limit solution for driving base shaft locating part 8 with driving sliding block 7 to be detached from cooperation Lock construction is set between solution lock slide 9 and base shaft locating part 8, and drives base shaft locating part 8 de- by solving the sliding of lock slide 9 From driving sliding block 7.

Specifically, referring to shown in each attached drawing, shown in especially Figure 18,19 and Figure 23, base shaft locating part 8 is along being parallel to shaft The direction of 123 axial line is slidably set in base portion 301, and the end of base shaft locating part 8 towards driving sliding block 7 is equipped with limit Position convex block 81, drives the guide chute 71 for having on sliding block 7 and being slipped fit inserted into for spacing block set 81, spacing block set 81 can It is ordinatedly plugged in guide chute 71 and can be slided along guide chute 71, when push-rod frame 30 rotates, when spacing block set 81 supports Driving sliding block 7 is just driven to continue to rotate together after gear to the side cell wall of guide chute 71, until driving sliding block 7 reaches the first limit Position position or the second restraining position.

Above-mentioned limit unlocking structure includes the driving inclined-plane 93 being set on solution lock slide 9 and is set on base shaft locating part 8 Cooperation inclined-plane 82, when continuing sliding after solving lock slide 9 and sliding along direction movement and the first lock construction is made to unlock, driving is oblique Face 93 matches with cooperation inclined-plane 82 and base shaft locating part 8 is driven to be moved far from driving sliding block 7, so that on driving sliding block 7 Spacing block set 81 be detached from from guide chute 71, rotating push rod frame 30, base shaft locating part 8 no longer drive driving sliding block again at this time 7 slidings.Push-rod frame 30, which is crossed after positive operating position reaches, when folding unlock operation is for 100 forward folded of stroller frame props up The rear side of frame 10, or it is reverse folded for stroller frame when push-rod frame 30 cross reverse operation position and reach 20 front side of fore-stock.

Shown in Figure 28,32,36,39,41, preceding protrusion 201a, first connecting portion are additionally provided in second connecting portion 201 Rear protrusion is correspondingly provided on 301（It is not shown in figure）, when stroller frame 100 folds, between fore-stock 20 and after-poppet 10 During relative rotation is drawn close, preceding protrusion 201a is gradually pressed on rear slider 501 and makes rear slider 501 under after-poppet 10 Row, while rear protrusion is gradually pressed on front-slider 401 and makes front-slider 401 along 20 downlink of fore-stock, respectively so that trailing wheel is fixed It is in directional lock state to component and front-wheel orientation assemblies, when this makes stroller frame 100 fold, front component 40 and trailing wheel Component 50 is directed locking and can not turn to respectively, and stroller frame 100 is stood on by front component 40 with wheel assembly 50 certainly Ground.

On children trolley shown by the present embodiment, fore-stock 20 and the after-poppet 10 of stroller frame 100, the two edge push away Width on vehicle carriage left and right directions can be arranged with otherness, so that fore-stock 20 folds one when collapsing with after-poppet 10 Can be upper between another one in left-right direction, reduce the size after children trolley folds.

To sum up, using the children trolley of the cradle head 200, in unfolded state, push-rod frame 30 has stroller frame 100 There are positive operating position and reverse operation position so that children trolley can realize positive carry out and reverse push enforcement use, push rod Frame 30 is easy to operate in switch operation, and can be realized to front component 40 and wheel assembly while push-rod frame 30 commutates 50 automatic switchover between directional lock and reverse blocking state state, so that always positioned at the wheel assembly carried out on front side of direction It is all orientation state to be located at the wheel assembly on rear side of implementation direction to be for universal state, to meet needs when cart is carried out.

The stroller frame 100 can be used when using in the deployed state with graft block pocket frame 300, and seat pocket frame 300 is in cart There are multiple disposable working conditions, and the adjustment of 300 working condition of seat pocket frame and the commutation of push-rod frame 30 are grasped on vehicle frame 100 Make mutual indepedent.Seat pocket frame 300 can be collapsed when stroller frame 100 folds in the side of stroller frame 100, realize cart band The folding of seat pocket.

The stroller frame 100 only needs operation unlock operating parts in folding operation to drive solution lock slide 9 to slide, and can make Push-rod frame 30 unlocks, push-rod frame 30 continues to rotate to 20 front side of fore-stock or after-poppet 10 rear side after unlocking will be automatically Drive and be unlocked between fore-stock 20 and after-poppet 10, then by stroller frame 100 it is whole lift can make fore-stock 20 with After-poppet 10 automatically relatively rotates the folding drawn close and realize stroller frame 100, and front component 40 and wheel assembly 50 simultaneously Have automatically been converted to directional lock state.Children trolley structure after folding is very compact, and occupied space is smaller, conveniently takes Band and storage.

It is to be understood thatCradle head 200 provided by the utility model is not limited only to each bar in stroller frame The rotation connection of part, can be also used for such as baby seat pocket, basket cot, on rocking chair product more rod pieces rotation connection, to realize The adjustment of certain rod piece operating positions on these products and obtain different use functions.

Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this. It is all according to equivalent change or modification made by the spirit of the present invention essence, should all cover the scope of protection of the utility model it It is interior.

Claims (11)

1. a kind of cradle head, including three cradling pieces of the connection that rotates, for by the locking of three holder rod locks Mechanism, cradling piece described in three are respectively the base shaft with base portion, the first bar with first connecting portion and with second Second bar of interconnecting piece, the base portion rotate around the first rotary centerline with the first connecting portion and connect, and described second Interconnecting piece rotates around the second rotary centerline with the first connecting portion and connect, first rotary centerline, the second rotation Center line is mutually parallel or collinearly extends, it is characterised in that：The locking mechanism includes for by the base portion and described the First lock construction of one interconnecting piece mutually locking and for by the second of the first connecting portion and second connecting portion mutually locking Lock construction, base shaft limit assembly is equipped in the cradle head, and the base shaft limit assembly includes being set in the base portion And rotate with it base shaft locating part, be set to the first connecting portion on and can be with the matched driving of base shaft locating part Sliding block,

The base shaft has the first rotation section and the second Rotary District at it in the rotational travel of first rotary centerline Between, the driving sliding block has the first restraining position and the second restraining position on its sliding path so that the base shaft is in institute Stating accordingly has the first operating position and the second operating position when being rotated in the first rotation section, when the base shaft is described the When being rotated in one rotation section, the base shaft locating part is matched with the driving sliding block, and second lock construction keeps lock It is fixed；When the base shaft runs off first operating position or the second operating position enters the second rotation section, the base Bar locating part is detached from the driving sliding block to be coordinated, and second lock construction is driven to unlock when the base shaft rotary motion.

2. cradle head according to claim 1, it is characterised in that：It is equipped in the cradle head for driving the base Bar locating part is detached from the limit unlocking structure of cooperation with the driving sliding block, and the unlock of the limit unlocking structure is prior to described the The unlock of two lock constructions.

3. cradle head according to claim 2, it is characterised in that：The base shaft locating part edge is parallel to described first turn The direction of dynamic center line is slidably set in the base portion, and the base shaft locating part is towards setting on the end of the driving sliding block There is spacing block set, there is the guide chute slipped fit inserted into for the spacing block set, the limit on the driving sliding block Convex block can ordinatedly be plugged in the guide chute and can be slided along the guide chute.

4. cradle head according to claim 3, it is characterised in that：It is equipped with and is used for described first in the cradle head The unlock piece of lock construction unlock, the unlock piece include the solution lock slide being slidably set in the base portion, and the unlock is slided For the glide direction of block perpendicular to first rotary centerline, the limit unlocking structure includes being set on the solution lock slide Driving inclined-plane and the cooperation inclined-plane on the base shaft locating part make institute when the solution lock slide slides along direction movement It states when continuing sliding after the unlock of the first lock construction, the driving inclined-plane and the cooperation inclined-plane, which match to merge, drives the base shaft limit Position part is far from the driving slide block movement.

5. cradle head according to claim 1, it is characterised in that：First lock construction includes along described first turn The first locking fluted disc that dynamic center line is slidably set between the base portion and the first connecting portion, for providing described the One locking fluted disc locks elastic component towards first of elastic force needed for the base portion tendency toward sliding, and described first locks the outer of fluted disc Have multiple first to lock tooth in the circumference of side, the lower end of the base portion is equipped with matched multiple with multiple first locks teeth First locked groove, the first connecting portion be equipped with it is multiple it is described first lock matched multiple second locked grooves of tooth, described first When lock construction locks, multiple first lock teeth are matched with multiple first locked grooves, the second locked groove simultaneously, when described first When lock construction unlocks, multiple first lock teeth are detached from multiple first locked grooves to be coordinated；

Second lock construction includes slidably being set to the second connecting portion and described first along second rotary centerline Second between interconnecting piece locks fluted disc, for providing the second locking fluted disc towards the first connecting portion tendency toward sliding institute Need elastic force second lock elastic component, it is described second locking fluted disc outside circumference on have it is multiple second lock teeth, described first Interconnecting piece is equipped with locks the matched multiple third locked grooves of tooth with multiple described second, and the upper end of the second connecting portion is equipped with Multiple to lock matched multiple 4th locked grooves of tooth with described second, when second lock construction locks, the second lock tooth is simultaneously Matched with multiple third locked grooves, the 4th locked groove, when second lock construction unlocks, it is multiple it is described second lock teeth with it is more A third locked groove is detached from cooperation.

6. cradle head according to claim 5, it is characterised in that：The first unlock actuator is equipped in the cradle head With the second unlock actuator, the first unlock actuator slides along first rotary centerline and can be around first rotation Center line is rotatably set in the base portion, and the first locking fluted disc is resisted against on the first unlock actuator；It is described Second unlock actuator is slided along second rotary centerline and can be rotatably set to around second rotary centerline described In first connecting portion, the second locking fluted disc is resisted against on the second unlock actuator, on the second unlock actuator Equipped at least one unlock protrusion, it is described first unlock actuator on towards the side of the first connecting portion be equipped with it is described Be slidably matched portion and the guiding surface that unlock protrusion is slidingly fitted, when the unlock protrusion is slid by the portion of being slidably matched When the guiding surface, the second unlock actuator slides and drives the second unlock actuator far from second connection Portion moves and makes the second lock construction unlock.

7. cradle head according to claim 6, it is characterised in that：It is additionally provided in the cradle head described for driving The solution lock slide of first unlock actuator sliding, the solution lock slide are slidably set in the base portion, the solution lock slide Glide direction perpendicular to first rotary centerline, the solution lock slide is equipped with the first unlock inclined-plane, first solution Lock actuator be equipped with first unlock inclined-plane matched second unlock inclined-plane, when the unlock slide block movement described in the One unlock inclined-plane is matched with the second unlock inclined-plane drives the first unlock actuator to be slided along first rotary centerline.

8. a kind of children trolley, includes the stroller frame with unfolded state and folded state, the stroller frame includes push rod The bottom of frame, fore-stock and after-poppet, the fore-stock is equipped with front component, and the bottom of the after-poppet is equipped with wheel assembly, It is characterized in that：By such as weighing between the lower end of the upper end of the fore-stock, the upper end of after-poppet and the push-rod frame Profit requires 1 to 7 any cradle head to be pivotally connected together each other, wherein the push-rod frame is described Base shaft.

9. children trolley according to claim 8, it is characterised in that：The front component include be set to the fore-stock around The front-wheel connector of front steering axis rotation connection is equipped with front-wheel orientation assemblies between the fore-stock and the front-wheel connector, described Wheel assembly includes the trailing wheel connector being rotatablely connected around rear steering axis with the after-poppet, the after-poppet and the trailing wheel connector Between be equipped with trailing wheel orientation assemblies, the front-wheel orientation assemblies and trailing wheel orientation assemblies are respectively provided with oriented solution capable of free rotation The directional lock state of lock status and steering locking,

When the push-rod frame is in first operating position, updip extends and is in positive work the push-rod frame from front to back Make position, the driving sliding block matches with the trailing wheel orientation assemblies and is at directional lock state, and the front-wheel is fixed It is detached from cooperation to component and the driving sliding block and is in reverse blocking state state；When the push-rod frame is in second working position When setting, updip extends and is in reverse operation position the push-rod frame from back to front, and the driving sliding block is oriented with the front-wheel Component matches and is at directional lock state, and the trailing wheel orientation assemblies are detached from cooperation with the driving sliding block and are in Reverse blocking state state；When the stroller frame be in unfolded state and the push-rod frame be located at the positive operating position with it is reversed When between operating position, the front-wheel orientation assemblies, trailing wheel orientation assemblies be separated respectively with the driving sliding block and respectively In reverse blocking state state.

10. children trolley according to claim 9, it is characterised in that：The front-wheel orientation assemblies include can towards or It is arranged in the preceding directional of the fore-stock bottom, for providing the preceding directional direction far from the front-wheel joint motion The preceding orientation elastic component of the front-wheel joint motion trend, along the fore-stock length extending direction up and down be set to institute The preceding locking elastic part stated the front-slider on fore-stock, move upwards trend for providing the front-slider, and it is connected to institute Front connector before stating between directional and the front-slider, the front-wheel connector is equipped with ordinatedly to be inserted for the preceding directional The preceding guide slot entered；

The trailing wheel orientation assemblies include that frame bottom in the rear can be arranged towards or away from the trailing wheel joint motion Rear directional, for provide it is described after directional towards the rear orientation elastic component of the trailing wheel joint motion trend, along described The length extending direction of after-poppet is set to the rear slider, upward for providing the rear slider on the after-poppet up and down The rear locking elastic part of movement tendency, and the rear connectors between directional and the rear slider in the rear are connected, it is described Trailing wheel connector is equipped with the rear guide slot being fittingly inserted into for the rear directional；

When the push-rod frame is in the positive operating position, the driving sliding block is resisted against on the rear slider and makes under it Row, the rear directional ordinatedly plug in guide slot in the rear and the trailing wheel orientation assemblies are made to be in directional lock shape State, the driving sliding block are separated with the front-slider；When the push-rod frame is in the reverse operation position, the driving Sliding block is resisted against on the front-slider and makes its downlink, and the preceding directional is ordinatedly plugged in the preceding guide slot and makes institute It states front-wheel orientation assemblies and is in directional lock state, the driving sliding block is separated with the rear slider.

11. children trolley according to claim 10, it is characterised in that：The upper end of the fore-stock is equipped with lordosis The upper end in portion, the after-poppet is equipped with rear protrusion, when the stroller frame is in folded state, the fore-stock and rear branch Frame is mutually drawn close, and the preceding protrusion is pressed on the rear slider, the rear protrusion is pressed on the front-slider, is made respectively The trailing wheel orientation assemblies, front-wheel orientation assemblies are in directional lock state.