CN107323511A

CN107323511A - Stroller frame

Info

Publication number: CN107323511A
Application number: CN201710681478.9A
Authority: CN
Inventors: 杨正帆
Original assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO Ltd; ZHONGSHAN WEST DISTRICT QINGYUAN TRADE AGENCY SERVICE DEPARTMENT
Current assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO LTD
Priority date: 2017-08-10
Filing date: 2017-08-10
Publication date: 2017-11-07
Anticipated expiration: 2037-08-10
Also published as: CN107323511B

Abstract

The invention discloses a kind of stroller frame, trailing wheel closing-folding mechanism is folded by the bending of connection rod set, and then front wheel carrier direction of the pivot that foot lever is connected with rear foot lever using the articulated section of connecting seat after driving as pivot forward is drawn close, pass through the guiding of connection rod set during the folding facing forward of rear wheel frame component, rear foot lever is set to produce the action drawn close relative towards direction in the middle of frame body, finally two trailing wheel foldings are placed between two front-wheels, therefore stroller frame folding significantly reduces its overall width and volume, overcome after existing stroller frame folding, two trailing wheels are difficult to the problem that takes up space that reduction folds rear width and volume positioned at the outside of two front-wheels respectively.On the other hand, during stroller frame is folded, under the drive of the joint assembly of the left and right sides first, seat cushion bolster mechanism directly can pull whole seat cushion bolster mechanism automatic retracting by the linkage axostylus axostyle in frame body by supporting plate.

Description

Stroller frame

【Technical field】

The present invention relates to a kind of stroller frame.

【Background technology】

The composition construction of existing stroller frame, its mainly comprising a frame body with plural folding joint, and The frame body bottom front left and right sides is respectively provided with a front-wheel, and the frame body bottom rear end left and right sides is respectively provided with a trailing wheel, should Stroller frame enables stroller frame to deploy to fold by the frame body with plural folding joint., can after it deploys There is provided infant to take, allow adult to elapse perambulator on road surface；And after folding, then can reduce stroller frame is taken up space, In order to collect and carry.

However, existing stroller frame is the flexibility that can be provided good stationarity on the move with turn to, setting Timing, the spacing of two trailing wheels of stroller frame must be more than the spacing of two front-wheels.Due to the folding machine of existing stroller frame Structure, has the frame body of plural folding joint using it and can produce front and rear bending closing function, therefore, work as stroller frame After folding, two wider trailing wheels of spacing must be positioned at the narrower two front-wheel rears or outside of spacing, cause stroller frame to fold Overall width is still bigger than normal afterwards, it is difficult to be reduced to less volume, the problem of there is space-consuming.And existing perambulator car In frame, use easy link assembly with support bearing mechanism, its bearing capacity that can be provided still has weak point, there is safety Hidden danger.

The present invention is researched and proposed in view of the shortcomings of the prior art.

【The content of the invention】

The technical problem to be solved in the present invention is to provide a kind of stroller frame, optimize complete vehicle structure, solve existing baby After youngster's vehicle carriage folding, the problem of two trailing wheels are located at the outside of two front-wheel respectively, i.e., using technical solution of the present invention, infant After vehicle carriage folding, between two trailing wheels are moved on the inside of two front-wheels, width after folding is reduced, stroller frame folding is realized Volume minimization afterwards.

In order to solve the above technical problems, stroller frame of the present invention is included：

One frame body, the frame body is pushed away comprising a front wheel carrier, a seat cushion support frame, 2 first joint assemblies, two Bar, two second joint components, leader, one first cross bar, one second cross bar and a linkage axostylus axostyle.

The front wheel carrier is comprising two or so relative and the extension that is inclined upwardly from front to back preceding foot levers, the first joint described in two Component is respectively arranged on before seat cushion support frame and two between foot lever, and the seat cushion support frame is provided with seat board, push rod described in two End is connected with 2 first joint assemblies respectively, and push rod upper end described in two is connected with two second joint components respectively, the handle two End is connected to two second joint components, and the handle is provided with operating assembly to control the first joint assembly and second joint The corresponding start of component, first cross bar and the second cross bar are arranged at below seat cushion support frame, and second cross bar is parallel sets On the downside of the front for being placed in the first cross bar, the first cross bar two ends are connected between 2 first joint assemblies, second cross bar Before being connected to two between foot lever, the linkage axostylus axostyle is located at the rear side subjacent of seat board, and is connected to 2 first joint groups Linked between part and with the first joint assembly.

Two front wheels, front wheels described in two are hubbed at the frame body front end left and right sides respectively, and the front wheels include one Front-wheel seat and a front-wheel for being hubbed at front-wheel seat, the front-wheel seat are connected with preceding foot lever lower end.

One seat cushion bolster mechanism, the seat cushion bolster mechanism can be actively mounted on below seat board, the seat support Mechanism includes one first arc, one second arc and a supporting plate, and the first arc upper end is articulated in seat board Bottom surface in the middle part of, the lower end of second arc is articulated in the second cross bar, and the supporting plate upper end is connected with the axostylus axostyle that links, institute The first arc lower end, the second arc upper end and supporting plate lower end is stated coaxially to be pivotally connected.

One trailing wheel closing-folding mechanism, the trailing wheel closing-folding mechanism is located on rear side of frame body, and the trailing wheel closing-folding mechanism is included Two rear wheel frame components and two connection rod sets.

Rear wheel frame component described in two can be actively mounted on the first cross bar, after each rear wheel frame component includes one Foot lever and a connecting seat after wheel, a rear wheel seat, one, the trailing wheel are hubbed at rear wheel seat side, the rear foot by a wheel shaft Bar lower end at the top of rear wheel seat with being connected, and the angle that the wheel shaft of the rear foot lever and trailing wheel is formed is acute angle, and the connecting seat is oblique Be fixed on to ground on the first cross bar, the rear foot lever upper end is articulated on connecting seat, the connecting seat comprising an articulated section and Respectively positioned at the Fixed Division and a stopper section of articulated section upper end, the connecting seat is fixed by Fixed Division and the first cross bar to be connected Connect, the connecting seat is pivotally connected by articulated section and pivot with rear foot lever upper end, and the stopper section is located at rear foot lever upper end rear For foot lever after limitation relative to the angle that connecting seat rotates backwards, the connecting seat of rear wheel frame component described in two from top to bottom and Direction tilts so that the formation of two rear foot bars is gradually turned up the soil below rearward end above the front end inclination and in symmetry shape outwardly, in expansion When, the spacing between trailing wheel described in two is more than the spacing between front-wheel described in two, and when folding, trailing wheel described in two is placed in two institutes State the position between front-wheel.

Each connection rod set includes a first connecting rod, a second connecting rod, and it is horizontal that described first connecting rod one end is connected to second On bar, the first connecting rod other end is connected by first multidirectional connector second connecting rod one end, the second connecting rod other end It is connected to by the second multidirectional connector in the middle part of rear foot lever.

Set on the first arc bottom and below pivot post and relative to the top outside of the second arc There is a spacing stopper.

Connection rod set described in two is respectively arranged on the second cross bar two ends and on the outside of rear foot lever and with connecting in the middle part of corresponding rear foot lever Connect.

A telescopic supporting rod group is connected between the push rod and seat cushion support frame of the frame body left and right sides respectively, it is each The telescopic supporting rod group includes a first support bar and a second support bar, the first support bar and the second support bar For arc-shaped rod, described first support bar one end is articulated on push rod, and first support bar side has an arc-shaped slot, One end of the second support bar is articulated in seat cushion support frame side, and the other end of the second support bar is movably connected on first The other end of support bar, and the other end of the second support bar has a limited block, the limited block is placed in arc-shaped slot To limit first support bar with respect to the length range that second support bar is stretched.

The front wheel carrier front end each side has a front-wheel hack lever, and the front-wheel seat of front wheels described in two is hubbed at respectively Front-wheel hack lever front bottom end.

The handle is distinguished comprising a hand grip cross bar with operating assembly and two from cross bar left and right ends are held The bar portion that bending extension downwards is formed, bar portion lower end described in two is connected to two second joint components.

After two an elastic strip is connected between foot lever middle part.

Vehicle wheel locking device of each rear wheel seat provided with an energy selective lock trailing wheel, wheel lock described in two is filled A cable wire is connected between putting with the two Vehicle wheel locking device starts that link, and Vehicle wheel locking device can be controlled provided with one wherein described in one The pedal of Vehicle wheel locking device start processed.

Stroller frame of the present invention, it is mainly using the trailing wheel closing-folding mechanism being connected on rear side of frame body, and the trailing wheel is received Folding mechanism is another logical with secondly rear wheel frame component can be bent and oblique and be symmetrically disposed on the first cross bar of the frame body Connection rod set is crossed to connect the rear foot lever of rear wheel frame component and the second cross bar of frame body, therefore when stroller frame is in expansion shape During state, foot lever lateral expansion towards the rear after the connecting seat that lateral tilt outwardly is set can be guided, being more than the two trailing wheels spacing should Two front-wheel spacing, while being in extended configuration by the connection rod set between being connected in the middle part of the second crossbar end and rear foot lever, to court The rear foot lever stretched afterwards provides bracing force.On the other hand, stroller frame of the present invention utilizes and is connected to seat board bottom, and puts In linkage axostylus axostyle, between the first cross bar and the second cross bar, and with can folding function seat cushion bolster mechanism, form one The multipoint mode supporting mechanism folded can be deployed, therefore stable Auxiliary support strength is provided to seat board, it is ensured that baby's car exhibition It is in firm extended configuration to open using having, and can smoothly be walked on the ground.

When stroller frame folding, trailing wheel closing-folding mechanism is folded by the bending of connection rod set, so drive after foot lever with Front wheel carrier direction of the pivot that the articulated section of connecting seat is connected with rear foot lever for pivot forward is drawn close, rear wheel frame component By the guiding of connection rod set during folding facing forward, rear foot lever is set to produce the action drawn close relative towards direction in the middle of frame body, Finally two trailing wheel foldings are placed between two front-wheels, therefore stroller frame folding significantly reduces its overall width and body Product, overcome after existing stroller frame folding, two trailing wheels respectively positioned at two front-wheels outside and be difficult to reduction fold rear width with The problem that takes up space of volume.On the other hand, during stroller frame is folded, in the left and right sides first, joint assembly drives Under, seat cushion bolster mechanism directly can pull whole seat support by the linkage axostylus axostyle in frame body by supporting plate Mechanism automatic retracting.

【Brief description of the drawings】

The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：

Fig. 1 is one of dimensional structure diagram of stroller frame of the present invention.

Fig. 2 is the two of the dimensional structure diagram of stroller frame of the present invention.

Fig. 3 is the side view of stroller frame of the present invention.

Fig. 4 is the fragmentary bottom schematic perspective view of stroller frame of the present invention.

Fig. 5 is the bottom plan schematic diagram of stroller frame of the present invention.

Fig. 6 is stroller frame backsight amagnified partial perspective schematic diagram of the present invention.

Fig. 7 is stroller frame fragmentary bottom floor map of the present invention.

Fig. 8 is side view floor map of the stroller frame of the present invention in folding state.

Fig. 9 is backsight schematic perspective view of the stroller frame of the present invention in folding state.

Figure 10 is rear plan schematic diagram of the stroller frame of the present invention in folding state.

【Embodiment】

Embodiments of the present invention are elaborated below in conjunction with the accompanying drawings.

As shown in Fig. 1 to Fig. 3 and Fig. 5, the preferred embodiment of one of stroller frame of the present invention includes a frame body 1, two Front wheels 2, a seat cushion bolster mechanism 3 and a trailing wheel closing-folding mechanism 4.

As shown in Figures 1 to 5, frame body 1 includes a front wheel carrier 10, a seat cushion support frame 11,2 first joint assemblies 12A, two push rods 13, two second joint component 12B, a seat board 111, leader 14, one first cross bar 16, one second cross bar 17 And a linkage axostylus axostyle 121, the front wheel carrier 10 includes two or so relative and the extension that is inclined upwardly from front to back preceding foot levers 101, and the front end of front wheel carrier 10 each side has a front-wheel hack lever 102, seat cushion support frame 11 passes through 2 first joint assemblies Before 12A is mounted on two on foot lever 101, the lower end of two push rod 13 is connected with 2 first joint assembly 12A respectively, two second joint components 12B is connected to the upper end of two push rod 13.The seat board 111 is on the seat cushion support frame 11, and the handle 14 includes one Hold cross bar 141, two and bend the bar portion 142 that extension is formed, bar portion described in two downwards from holding cross bar 141 left and right ends respectively 142 are connected in two second joint component 12B, and holding cross bar 141 provided with an operating assembly 15 to control described first Joint assembly 12A starts corresponding to second joint component 12B.

In aforesaid frame body 1, the first joint assembly 12A and second joint component 12B has clutch for clutch control With spinfunction, and it is controlled by the operating assembly 15 so that the frame body 1 can bend to fold and be positioned with expansion, institute The creation part of the first joint assembly 12A, second joint component 12B and the non-category present invention of operating assembly 15 are stated, and be can select Various known articulation structure, its detail structure is repeated no more in this.

In aforesaid frame body 1, as shown in Figures 1 to 5, the cross bar 17 of the first cross bar 16 and second is arranged at seat cushion branch The lower section of support 11, wherein, the first cross bar 16 is laterally connected between 2 first joint assembly 12A.Second cross bar 17 is parallel Ground is arranged on the downside of the front of the first cross bar 16, and the second cross bar 17 is connected to before the left and right two of front wheel carrier 10 between foot lever 101. The linkage axostylus axostyle 121 is located at the bottom surface lower rear of seat board 111, and is connected between 2 first joint assembly 12A, and with First joint assembly 12A links.

As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, push rod 13 and seat cushion support frame 11 of the aforesaid frame body 1 in the left and right sides Between one telescopic supporting rod group 18 of each connection, the telescopic supporting rod group 18 supports comprising a first support bar 181 with one second Bar 182, first support bar 181 and second support bar 182 are arc-shaped rod, described one end of first support bar 181 and push rod 13 Pivot joint, and the side of the first support bar 181 has an arc-shaped slot 1811, described one end of second support bar 182 is articulated in seat The side of advance expenditure support 11, the other end of second support bar 182 is movably connected on the other end of first support bar 181, and the second support The other end of bar 182 is provided with a limited block 1821, and the limited block 1821 is placed in arc-shaped slot 1811, to limit the first support The length range of bar 181 and the relative telescopic of second support bar 182.

As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, two front wheels 2 are hubbed at the front end left and right sides of front wheel carrier 10, Mei Yiqian respectively Wheel group 2 includes a front-wheel seat 20 and the front-wheel 21 being hubbed on front-wheel seat 20, and the front-wheel seat 20 is hubbed at the front-wheel hack lever 102 front bottom ends are to control or change the direction of travel of front-wheel 21.

As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, the seat cushion bolster mechanism 3 actively can be located in frame body 1, and institute Seat cushion bolster mechanism 3 is stated to be connected to the bottom of seat board 111 and be located between the first cross bar 16 and the second cross bar 17, the seat cushion Supporting mechanism 3 includes one first arc 31, one second arc 32 and a supporting plate 33, the upper end of the first arc 31 In the middle part of the bottom surface for being articulated in seat board 111, the lower end of second arc 32 is articulated on the second cross bar 17, the supporting plate 33 upper end is connected with linkage axostylus axostyle 121, under the lower end of the first arc 31, the upper end of the second arc 32 and supporting plate 33 End is with a coaxially pivot joint of pivot post 34, the bottom of the first arc 31 and positioned at the lower section of pivot post 34 and positioned at the second arc A spacing stopper 311 is provided with the outside of 32 upper end, therefore, the multipoint mode supporting mechanism of folding can be deployed by foring one.

As shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, the trailing wheel closing-folding mechanism 4 is located at the rear side of frame body 1 and relative to vehicle frame The rear of front-wheel 21 described in left and right the two of the front end of body 1, the trailing wheel closing-folding mechanism 4 connects comprising two rear wheel frame components 40 and two Bar group 50.

As shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, rear wheel frame component 40 described in two can be actively on rear side of frame body 1, often Rear wheel frame component 40 described in one includes foot lever 43 and a connecting seat 44 after a trailing wheel 41, rear wheel seat 42, one, and the trailing wheel 41 has There is a wheel shaft, the trailing wheel 41 is hubbed at the side of rear wheel seat 42, the rear lower end of foot lever 43 and the top of rear wheel seat 42 by wheel shaft It is fixedly connected, the angle that the central axis of the central axis of the rear foot lever 43 and the wheel shaft of trailing wheel 41 is formed is acute angle, institute State connecting seat 44 be articulated in the rear upper end of foot lever 43 and it is oblique be fixed on the first cross bar 16 of frame body 1, the connecting seat 44 Comprising an articulated section 441, a Fixed Division 442 and stopper section 443, the connecting seat 44 is fixedly connected on by Fixed Division 442 On first cross bar 16 of frame body 1, the articulated section 441 of the connecting seat 44 is articulated in the rear upper end of foot lever 43, institute by pivot Stopper section 443 is stated positioned at the rear upper end rear of foot lever 43, and after limiting foot lever 43 relative to the angle that connecting seat 44 rotates backwards Degree.The connecting seat 44 of rear wheel frame component 40 described in two from top to bottom (refers on the outside of left and right) direction and tilted outwardly, and positioned at vehicle frame sheet Between two second joint component 12B of body 1, the formation of foot lever 43 splayed configuration structure after making two by angularly disposed connecting seat 44, Foot lever 43 is gradually turned up the soil inclination and in symmetry shape under upper end to lower end is on preceding backwards after i.e. two.When two rear wheel frame components 40 are in exhibition During open state, foot lever 43 is from direction extension below rearward end above front end after two rear wheel frame components 40 and spacing is incremented by, that is, The spacing being smaller than after two between the lower end of foot lever 43 after two between the upper end of foot lever 43, and spacing between two trailing wheels 41 is more than Spacing between two front-wheels 21.When two rear wheel frame components 40 are in collapse state, two front-wheels are smaller than between two trailing wheels 41 Spacing between 21, and two trailing wheels 41 are placed between the inner side of two front-wheel 21.

As shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, rear wheel frame component 40 described in two is connected with one between the middle part of foot lever 43 after two Elastic strip 45, elastic strip 45 can select spring steel plate, and the scope after two after the stretching, extension of foot lever 43 is limited by elastic strip 45.Two trailing wheels Can also connect one between also settable Vehicle wheel locking device 60, two Vehicle wheel locking devices 60 in the rear wheel seat 42 of frame component 40 has The cable wire 62 of flexibility, and a Vehicle wheel locking device 60 is provided with a pedal 61 wherein, and the wheel lock is controlled by pedal 61 Determine device 60, and the Vehicle wheel locking device 60 being respectively arranged in two rear wheel seats 42 is linked by cable wire 62.The wheel lock Determine the creation part of the non-category present invention of device, and can select various known Vehicle wheel locking device, its thin portion is repeated no more in this Construction.

As shown in Fig. 2, Fig. 3, Fig. 5 and Fig. 6, connection rod set 50 described in two is respectively arranged on the two ends of the second cross bar 17 of frame body And corresponding foot lever 43 afterwards is connected positioned at the outside of rear foot lever 43 of two rear wheel frame components 40, each connection rod set 50 is included One first connecting rod 51, a second connecting rod 52, one first multidirectional connector 53 and one second multidirectional connector 54, described first connects The one end of bar 51 is connected on the second cross bar 17, and the other end of first connecting rod 51 is connected to second connecting rod by the first multidirectional connector 53 52 one end, the other end of second connecting rod 52 is connected to the middle part of rear foot lever 43 by the second multidirectional connector 54, using being connected to first The first multidirectional connector 53 between connecting rod 51 and second connecting rod 52 and it is connected between second connecting rod 52 and rear foot lever 43 Second multidirectional connector 54, enables two rear wheel frame components 40 to deploy backward relative to frame body 1, folding facing forward and left and right phase To deploying the action with drawing close folding.

On the operation principle of stroller frame of the present invention, as shown in Figure 1 to Figure 3, when the stroller frame is deployed, car The push rod 13 of left and right two of frame body 1 is stretched upward by the first joint assembly 12A respectively, and handle 14 passes through second joint component 12B stretches upward, and the telescopic supporting rod group 18 of the left and right sides also forms extended configuration respectively, and passes through 11 pairs of seats of seat cushion support frame Backing plate 111 provides stable bracing force, frame body 1 is formed stable deployed condition.

As shown in Figures 1 to 6, after trailing wheel closing-folding mechanism 4 is located at two in the rear side of frame body 1, trailing wheel closing-folding mechanism 4 Truck assembly 40 stretches backwards, and the connecting seat 44 set by two lateral tilts outwardly of rear wheel frame component 40 is with foot lever after guiding 43 Lateral expansion, and then make the spacing between two trailing wheels 41 be more than the spacing between two front-wheel 21 towards the rear, while utilizing difference The connection rod set 50 being connected between the two ends of the second cross bar 17 and the middle part of rear foot lever 43 is in extended configuration, and the rear foot to stretching backwards Bar 43 provides bracing force, and each rear wheel frame component 40 is resisted against rear foot lever 43 with the stopper section 443 on rear side of the lower end of connecting seat 44 Top.

In addition, the stroller frame also using can folding seat cushion bolster mechanism to the bottom of seat board 111 formed one Energy expansion and the multipoint mode supporting mechanism of folding, stable Auxiliary support strength is provided to seat board 111.Make trailing wheel folding machine Structure 4, in firm extended configuration, stroller frame can steady on the ground, safely be pushed away when stroller frame is deployed Dynamic walking.

As shown in Fig. 8 to Figure 10, when stroller frame folding, make described first by the operating assembly 15 on handle 14 Joint assembly 12A and second joint component 12B switches to released state, you can folding state, 2 first joint assembly 12A make car Two push rods 13 of frame body 1 are bent forward, and with the two of front wheel carrier 10 before foot lever 101 draw close, separately pass through two second joint components 12B makes handle 14 reversely bend and be drawn close with two push rods 13, and during frame body 1 is folded, seat cushion bolster mechanism 3 can lead to The linkage axostylus axostyle 121 in frame body 1 is crossed under the left and right sides the first joint assembly 12A drives, directly passes through supporting plate 33 pull the whole automatic folding of seat cushion bolster mechanism 3, and make the first arc 31 of seat cushion bolster mechanism 3, the second arc 32 And the shape folding state in frame body 1 of supporting plate 33.

On the other hand, trailing wheel closing-folding mechanism 4 is folded by the bending of two connection rod sets 50, and foot lever 43 is with connecting seat after driving Pivot in 44 articulated section 441 is the pivot direction of front wheel carrier 10 forward and closes, and using in two connection rod sets 50, even The first multidirectional connector 53 for being connected between first connecting rod 51 and second connecting rod 52 and it is connected to second connecting rod 52 and rear foot lever The second multidirectional connector 54 between 43, during making the folding facing forward of two rear wheel frame component 40, while guiding foot lever behind left and right two 43 produce the action drawn close relative towards the middle direction of frame body 1, and then drive two trailing wheels 41 of left and right to be folded to two front-wheels 21 Between inner side, make after stroller frame folding, can significantly reduce its overall width and volume, realize volume minimization, it is convenient People's trip is carried and Zang Na.

Claims

1. stroller frame, it is characterised in that include：

One frame body (1), the frame body (1) includes a front wheel carrier (10), a seat cushion support frame (11), 2 first joints Component (12A), two push rods (13), two second joint components (12B), leader (14), one first cross bar (16), one second cross bar (17) and one linkage axostylus axostyle (121)；

The front wheel carrier (10) includes two or so relative and the extension that is inclined upwardly from front to back preceding foot levers (101), the described in two One joint assembly (12A) is respectively arranged on before seat cushion support frame (11) and two between foot lever (101), on the seat cushion support frame (11) Provided with seat board (111), push rod described in two (13) lower end is connected with 2 first joint assemblies (12A) respectively, push rod described in two (13) upper end is connected with two second joint components (12B) respectively, and handle (14) two ends are connected to two second joint groups Part (12B), the handle (14) is provided with operating assembly (15) to control the first joint assembly (12A) and second joint component (12B) corresponding start, first cross bar (16) is arranged at below seat cushion support frame (11) with the second cross bar (17), and described the Two cross bars (17) are set in parallel on the downside of the front of the first cross bar (16), and the first cross bar (16) two ends are connected to 2 first passes Save between component (12A), second cross bar (17)) be connected to two before between foot lever (101), the linkage axostylus axostyle (121) sets In the rear side subjacent of seat board (111), and be connected between 2 first joint assemblies (12A) and with the first joint assembly (12A) links；

Two front wheels (2), front wheels described in two (2) are hubbed at frame body (1) front end left and right sides, the front wheels respectively (2) front-wheel (21) of front-wheel seat (20), the front-wheel seat (20) and preceding foot lever are hubbed at comprising a front-wheel seat (20) and one (101) lower end is connected；

One seat cushion bolster mechanism (3), the seat cushion bolster mechanism (3) can be actively mounted on below seat board (111), the seat Advance expenditure support mechanism (3) includes one first arc (31), one second arc (32) and a supporting plate (33), first arc Shape plate (31) upper end is articulated in the middle part of the bottom surface of seat board (111), and the lower end of second arc (32) is articulated in the second horizontal stroke Bar (17), supporting plate (33) upper end is connected with linkage axostylus axostyle (121), the first arc (31) lower end, the second arc Plate (32) upper end and supporting plate (33) lower end are coaxially pivotally connected；

One trailing wheel closing-folding mechanism (4), the trailing wheel closing-folding mechanism (4) is located on rear side of frame body (1), the trailing wheel closing-folding mechanism (4) two rear wheel frame components (40) and two connection rod sets (50) are included；

Rear wheel frame component (40) can be actively mounted on the first cross bar (16) described in two, each rear wheel frame component (40) bag Containing foot lever (43) and a connecting seat (44) after a trailing wheel (41), a rear wheel seat (42), one, the trailing wheel (41) passes through a wheel shaft Be hubbed at rear wheel seat (42) side, rear foot lever (43) lower end be connected at the top of rear wheel seat (42), the rear foot lever (43) and The angle that the wheel shaft of trailing wheel (41) is formed is acute angle, and the connecting seat (44) is obliquely fixed on the first cross bar (16), institute State rear foot lever (43) upper end to be articulated on connecting seat (44), the connecting seat (44) position comprising an articulated section (441) and respectively A Fixed Division (442) and a stopper section (443) in articulated section (441) upper end, the connecting seat (44) pass through Fixed Division (442) It is fixedly connected with the first cross bar (16), the connecting seat (44) passes through articulated section (441) and a pivot and rear foot lever (43) upper end Pivot joint, the stopper section (443) is located at rear foot lever (43) upper end rear for foot lever after limitation (43) relative to connecting seat (44) angle rotated backwards, the connecting seat (44) of rear wheel frame component (40) described in two from top to bottom and outwardly direction tilt so that Foot lever (43) formation is gradually turned up the soil below rearward end above front end after two tilts and in symmetry shape, when expansion, trailing wheel described in two (41) spacing between is more than the spacing between front-wheel (21) described in two, and when folding, trailing wheel described in two (41) is placed in two institutes State the position between front-wheel (21)；

Each connection rod set (50) includes a first connecting rod (51), a second connecting rod (52), described first connecting rod (51) one end It is connected on the second cross bar (17), first connecting rod (51) other end passes through the first multidirectional connector (53) second connecting rod (52) One end is connected, and second connecting rod (52) other end is connected on rear foot lever (43) middle part by the second multidirectional connector (54).

2. stroller frame according to claim 1, it is characterised in that on the first arc (31) bottom and be located at A spacing stopper (311) is provided with below pivot post (34) and relative to the top outside of the second arc (32).

3. stroller frame according to claim 1, it is characterised in that connection rod set described in two (50) is respectively arranged on the second cross bar (17) two ends and on the outside of the rear foot lever (43) and with it is corresponding after foot lever (43) middle part be connected.

4. stroller frame according to claim 1, it is characterised in that the push rod (13) of frame body (1) left and right sides It is connected a telescopic supporting rod group (18) respectively between seat cushion support frame (11), each telescopic supporting rod group (18) includes one First support bar (181) and a second support bar (182), the first support bar (181) is with the second support bar (182) Arc-shaped rod, described first support bar (181) one end is articulated on push rod (13), and the first support bar (181) side has There is an arc-shaped slot (1811), one end of the second support bar (182) is articulated in seat cushion support frame (11) side, described second The other end of support bar (182) is movably connected on the other end of first support bar (181), and the second support bar (182) The other end has a limited block (1821), and the limited block (1821) is placed in arc-shaped slot (1811) to limit first support bar (181) length range that relative second support bar (182) is stretched.

5. stroller frame according to claim 3, it is characterised in that front-wheel (21) frame (10) front end is each side With a front-wheel hack lever (102), the front-wheel seat (20) of front wheels described in two (2) is hubbed at front-wheel hack lever (102) front end bottom respectively Portion.

6. stroller frame according to claim 1, it is characterised in that the handle (14) has operating assembly comprising one (15) handle (14) holding cross bar (141) and two bends extension formation separately down from cross bar (141) left and right ends are held Bar portion (142), bar portion described in two (142) lower end is connected to two second joint components (12B).

7. according to any one of the claim 1-6 stroller frames, it is characterised in that connected after two between foot lever (43) middle part One elastic strip (45).

8. stroller frame according to claim 7, it is characterised in that each rear wheel seat (42) can select provided with one Property locking trailing wheel (41) Vehicle wheel locking device (60), a cable wire (62) is connected between Vehicle wheel locking device described in two (60) to join Dynamic two Vehicle wheel locking devices (60) start, and Vehicle wheel locking device (60) can control wheel lock to fill provided with one wherein described in one Put the pedal (61) of (60) start.