CN106428179A

CN106428179A - Baby carriage, carriage furling mechanism and carriage furling and folding method

Info

Publication number: CN106428179A
Application number: CN201610381976.7A
Authority: CN
Inventors: 赵国松
Original assignee: ZHEJIANG CH BABY CO Ltd
Current assignee: Shaoxing Shangyu Rixing Hardware Products Co Ltd
Priority date: 2016-06-01
Filing date: 2016-06-01
Publication date: 2017-02-22
Anticipated expiration: 2036-06-01
Also published as: CN106428179B

Abstract

The invention discloses a baby carriage, a carriage furling mechanism and a carriage furling and folding method. The carriage furling mechanism comprises two side frames and a horizontal lever, wherein each of the side frames comprises a front foot lever, a rear foot lever and a push lever; a front supporting lever and a rear supporting lever are connected between each front foot lever and the corresponding push lever, and a foldable first four-connecting-lever mechanism is formed; a first connecting lever and a second connecting lever are sequentially connected between each front foot lever and the corresponding rear foot lever, and a second four-connecting-lever mechanism is formed; one end of each of the first connecting levers and the lower end of the corresponding front supporting lever are fixedly connected or integrally formed; each first four-connecting-lever mechanism in a folding state is overlaid on the upper side of the corresponding front foot lever, and each rear foot lever is overlaid on the lower side of the corresponding front foot lever; and the upper end of each rear supporting lever and the middle part of the corresponding push lever are locked and fixedly connected, or released, furled and folded through a carriage furling and locking mechanism. The technical scheme of the baby carriage disclosed by the invention is more reasonable in structure; the size of the folded baby carriage is low; and the operation of the baby carriage is convenient and effortless.

Description

Baby carriage and its collapsing mechanism, return the vehicle to the garage and knock off method for folding

Technical field

The present invention relates to children trolley technical field, more particularly to a kind of baby carriage that can fold and its return the vehicle to the garage and knock off Mechanism, return the vehicle to the garage and knock off method for folding.

Background technology

Perambulator is a kind of tool car designing for baby's outdoor activities provide facility, is baby's favorite stroll traffic Instrument, requirement when even more mother goes shopping with baby.With the progress of productive life, perambulator use scene also More and more.

The Chinese patent literature of Publication No. CN101544242 discloses a kind of foldable baby carriage, belongs to fold mechanism knot Structure technical field.A kind of foldable baby carriage, carries front-wheel support and the rear wheel support of wheel including push rod and bottom, and feature exists It is flexibly connected with the push rod on top by spider in front-wheel support and rear wheel support, in the middle part of push rod after collateral support with base End is flexibly connected, and is flexibly connected with pan frontward end in the middle part of front-wheel support, and rear wheel support passes through in the middle part of rear wheel support pull bar and base It is flexibly connected, base is passed through foldable locking device and locked with rear wheel support.

The Chinese patent literature of Publication No. CN201347112 discloses a kind of foldable baby carriage vehicle frame, including front The push rod that the after-poppet that frame is connected with fore-stock rotation is slidably connected with fore-stock, both ends are turned with fore-stock and push rod respectively The head rod being dynamically connected, one end rotate, with push rod, the seatpost being connected, one end is rotated with push rod and is connected and the other end Portion is at least one folding latch hook of hook solid, the lock pin with folding latch hook cooperation being arranged on fore-stock.Folding knob After unblock and folding latch hook unblock, promote push rod to glide, its front end is acted on down by connecting rod, planar movement occurs, by seat Bar, push rod is close forward to pull after-poppet, completes folding process, when needing to support perambulator, reverse operating above procedure, you can Complete.

Technique scheme achieves the folding of perambulator, but folding process is relatively cumbersome, simultaneously the joint of multiple exposures Mechanism and latch-up structure easily damage on children and affect to use safety.

The Chinese patent literature of Publication No. CN201257998 discloses a kind of folding joint for storing foldable baby carriage and is related to Foldable stroller, including front-wheel support, driver's support, function pull handle and function latch, front-wheel support end is fixedly connected one Connect lower seat, driver's support front end is fixedly connected a connection seat of honour, under connecting, seat connects with being connected seat of honour rotation, in driver's support It is installed with bracing wire, there is in front-wheel support and the connection seat of honour accommodating hole of accommodating function latch, function pull handle passes through bracing wire and function Latch connects, and function latch is provided with spring, and function latch can be partially into front-wheel under function pull handle, spring and bracing wire effect The accommodating hole of support, partly with the accommodating hole cooperation being connected the seat of honour, or depart from the accommodating hole of front-wheel support, all be connected The accommodating hole cooperation at the seat of honour.This technical scheme optimizes the position of the switch by bracing wire, improves security, but folding process according to Old relatively cumbersome.

The Chinese patent literature of Publication No. CN103507846A discloses a kind of children trolley, and stroller frame is included relatively The left side brackets claiming and right side support, the link being connected between left side brackets and right side support, left side brackets include left front Frame, left back frame, left side bar, anterior and left front frame rotate the left connecting rod being connected and rotate the left lever being connected and left side with left back frame The top of bar rotates the left push-rod frame connecting, and left lever is connected with the posterior rotation of left connecting rod, the bottom of left push-rod frame and Zola The top of bar rotates and connects, and the top of left front frame, the top of left back frame are rotated with bottom three part of left side bar and is connected, right Side stand is equally arranged；When stroller frame is in the deployed down, between side arm and side lever, form angle α, the angle model of angle α Enclose for 165 ° -195 °.This technical scheme still suffers from following problems：1st, upon deployment, side arm, side lever and push-rod frame are launched into one Straight line, locking mechanism mutually extrudes to lock car body by push-rod frame and side lever, will be rotated by promoting push-rod frame in folding Form lever and carry out folding, not only folding is inconvenient, needs firmly larger, and force localization, be easily damaged push-rod frame；2nd, push away Bridge adopts two sections to stretch, and after contraction, still length is longer, side arm cannot folding length longer, so cause after vehicle frame folding still body Long-pending larger；3rd, make vehicle frame volume less as rear wheel need to be drawn in the lump in during folding, then the folding after-frame that needs first to squat down is by rear wheel After packing up, then two side stands are carried out with folding, inconvenient operation, process are unreasonable, using skill is required too high；4th, left and right two After side stand doubling is drawn in, not to easily scattering, collection is taken all inconvenient for position of such as taking；5th, locking mechanism and multiple joint Mechanism exposes, and easily children is damaged and affects to use safety.

The patent document of Publication No. CN204222933U discloses a kind of foldable baby go-cart, and two is collateral around The folding principle of frame is close with the patent document of Publication No. CN103507846A, is only the double-four link mechanism in two side stands Linkage structure be slightly different, it there is a problem of same.

The patent document of Publication No. CN204415487U discloses a kind of frame for baby cart being easy to folding storage, including pushing away Bar, fore-stock, after-poppet, subbase, front wheel carrier and rear wheel frame；The upper end of push rod is provided with leader；The upper end of fore-stock Rotate with the lower end of push rod and be connected formation the first pin joint；The lower end that the upper end of after-poppet is also rotationally connected with push rod forms second Pin joint, and the second pin joint is located at the rear of the first pin joint；The front end of subbase is connected with front wheel carrier；The lower end of fore-stock turns It is dynamically connected and form the 3rd pin joint in the anterior of subbase；The rear portion that the lower end of after-poppet is rotationally connected with subbase forms the 4th Pin joint；Rear wheel frame is rotationally connected with the 4th pin joint at subbase rear portion；Described fore-stock is provided with the first connector, described Rear wheel frame is provided with the second connector, is provided with connecting rod between two connectors；Among four pin joints, any one is provided with locking device.Should Scheme is using chassis holder structure, and in order to ensure vehicle frame stability, subbase volume is big and cannot be carried out folding, so causes Vehicle frame volume after folding still larger although wherein also illustrate that push rod is scalable or folding, give also simple Bending structure, but even if will be still larger for push rod bending Rear frame volume.

Content of the invention

In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of baby carriage and its collapsing mechanism, Return the vehicle to the garage and knock off method for folding, and structure is more reasonable, and volume after folding is less, easy to operate.

To achieve the above object, present invention employs following technical scheme：

A kind of collapsing mechanism of baby carriage, including two side frames being symmetrically arranged and be connected to side frames it Between cross bar, each side frame includes front foot lever (10), rear foot lever (20) and pushing hands bar, is provided with front-wheel below front foot lever (10) (13), below rear foot lever (20), trailing wheel (21) is installed it is characterised in that the lower end of front support rod (30) and front foot lever (10) Middle part is hinged, and the upper end of front support rod (30) is hinged with the lower end of pushing hands bar, in the upper end of back support rod (40) and pushing hands bar Portion is hinged, and the lower end of back support rod (40) is hinged with the upper end of vertical supporting rod (14), the lower end of vertical supporting rod (14) and rear foot lever (20) upper end is hinged, and the middle part of vertical supporting rod (14) is fixedly connected with the upper end of front foot lever (10) or is integrally formed；First even One end of bar (31) is fixedly connected with the lower end of front support rod (30) or is integrally formed, the other end and second of first connecting rod (31) One end of connecting rod (32) is hinged, and the other end of second connecting rod (32) is hinged with the middle part of rear foot lever (20)；So, front foot lever (10) It is connected front support rod (30) and back support rod (40) and constitute folding first quadric chain, front foot lever between pushing hands bar (10) by being sequentially connected first connecting rod (31) and second connecting rod (32) and constituting the second double leval jib machine and rear foot lever (20) between Structure, the first quadric chain of folded state and rear foot lever (20) are stacked in front foot lever (10) both sides up and down respectively；Wherein, prop up afterwards Realize locking affixed or release folding by the locking mechanism that returns the vehicle to the garage and knock off between the upper end of strut (40) and the middle part of pushing hands bar.

Preferably, the described locking mechanism that returns the vehicle to the garage and knock off includes return the vehicle to the garage and knock off switch (621) and side frame locking piece (51), in pushing hands bar Portion is provided with the groove (52) that can accommodate back support rod (40) upper end, and the upper end of back support rod (40) is inserted in this groove (52) simultaneously Hinged by jointed shaft with the side wall of this groove, the upper end of back support rod (40) is provided with sticking department (42), when back support rod (40) When rotating with respect to pushing hands bar, sticking department (42) can be movable in groove (52), and side frame locking piece (51) is slidably arranged in and pushes away In hand lever, the switch (621) that returns the vehicle to the garage and knock off is connected with side frame locking piece (51) by steel wire；When side frame locking piece (51) stretches into groove (52) During interior sticking department (42) cooperation positioning with back support rod (40) upper end, back support rod (40) with respect to pushing hands bar can not rotate from And locking both realizing is affixed, two quadric chains of such side frame are locked cannot activity；When side frame locking piece (51) moves back When returning and separating with the sticking department (42) of back support rod (40) upper end, back support rod (40) can rotate with respect to pushing hands bar, this Two quadric chains of sample side frame activity can carry out folding.

Preferably, described front foot lever (10) is divided into foot lever of going forward (11) and lower front foot lever (12), front support rod (30) Lower end is hinged with the middle part of foot lever of going forward (11), the middle part of vertical supporting rod (14) be fixedly connected with the upper end of foot lever of going forward (11) or It is integrally formed, front-wheel (13), the upper end of lower front foot lever (12) and the lower end of foot lever of going forward (11) are installed in lower front foot lever (12) lower end Hinged, the lower end of described foot lever of going forward (11) and the upper end of lower front foot lever (12) are in hook-shaped, the upper forward foot in a step that cooperates down respectively The jointed shaft (122) of the upper end of the lower end of bar (11) and lower front foot lever (12) is arranged on down hook-shaped head, foot lever of going forward (11) Lower end and lower front foot lever (12) upper end by be arranged on down hook-shaped root forward foot in a step rod lock mechanism realize locking affixed Or release folding.

Preferably, described forward foot in a step rod lock mechanism, including lower forward foot in a step rod lock hook (111) and lower forward foot in a step rod lock portion (121), the middle part of lower forward foot in a step rod lock hook (111) is hinged is arranged in hook-shaped root under foot lever of going forward (11), lower front foot lever One end of lock hook (111) is the hook portion (1112) with the cooperation of lower forward foot in a step rod lock portion (121) hook, lower forward foot in a step rod lock hook (111) one end is to stick up the release portion (1111) foot lever of going forward (11) outward, and lower forward foot in a step rod lock hook (111) is connected with elastic component Thus giving the trend near lower forward foot in a step rod lock portion (121) for the hook portion (1112)；Instantly the release portion of forward foot in a step rod lock hook (111) (1111) when the rear foot lever (20) being folded pushes back, the hook portion (1112) of lower forward foot in a step rod lock hook (111) and lower forward foot in a step rod lock Portion (121) separates, thus lower front foot lever (12) can be with folding；When rear foot lever (20) and lower front foot lever (12) launch, the lower forward foot in a step The release portion (1111) of rod lock hook (111) outwards sticks up, the hook portion (1112) of lower forward foot in a step rod lock hook (111) and lower front foot lever Sticking department (121) hook coordinates, thus lower front foot lever (12) and foot lever of going forward (11) locking are affixed.

Preferably, described pushing hands bar include pushing hands bar handle (611), upper pushing hands bar (61), middle pushing hands bar (62) and under Pushing hands bar (50), upper pushing hands bar (61) is plugged in middle pushing hands bar (62) and by upper pushing hands bar in the way of can stretching up and down Locking mechanism realizes that locking is affixed or release is flexible, and the lower end of middle pushing hands bar (62) and the upper end of lower pushing hands bar (50) are hinged and lead to Cross middle pushing hands rod lock mechanism to realize locking affixed or release folding；Under the upper end of front support rod (30) and lower pushing hands bar (50) End is hinged, and the upper end of back support rod (40) is hinged with the middle part of lower pushing hands bar (50).

Preferably, described upper pushing hands rod lock mechanism includes pushing hands bar telescoping switch (6111), upper pushing hands rod lock Pin (613), shell fragment (614) and shell fragment set (612), shell fragment (614) is fixed on pushing hands bar (62) in pushing hands bar (61) insertion Insertion section, fixing upper pushing hands lever lock rationed marketing (613) of outer warping end of shell fragment (614), upper pushing hands lever lock rationed marketing (613) stretches out pushing hands Bar (61) is simultaneously coordinated with the lock pin holes on middle pushing hands bar (62), and shell fragment set (612) is set in shell fragment (614) outward and by sliding The outer warping end controlling shell fragment (614) is included or is stuck up, and shell fragment set (612) is handled on (611) with being arranged on pushing hands bar by steel wire Upper pushing hands bar telescoping switch (6111) connect.

Preferably, described middle pushing hands rod lock mechanism includes STATEMENT OF FEDERALLY SPONSORED (53) and middle pushing hands rod lock part (54), linkage Part (53) is slidably arranged in the middle part of lower pushing hands bar (50) and is connected with the linkage portion (44) being arranged on back support rod (40) upper end, Middle pushing hands rod lock part (54) be slidably arranged in lower pushing hands bar (50) top and with the locking being arranged on middle pushing hands bar (62) lower end Hole (622) grafting coordinates, and middle pushing hands rod lock part (54) is connected with STATEMENT OF FEDERALLY SPONSORED (53) by steel wire, middle pushing hands rod lock part (54) Give the trend of the lock hole (622) on pushing hands bar (62) in insertion by spring；When back support rod (40) is with respect to lower pushing hands When bar (50) rotates, linkage portion (44) drives STATEMENT OF FEDERALLY SPONSORED (53) mobile, STATEMENT OF FEDERALLY SPONSORED (53) driven by steel wire in pushing hands rod lock Part (54) and lock hole (622) locking latch on middle pushing hands bar (62) or separate release.

Preferably, described cross bar includes：

First cross bar (70), is arranged between foot lever of going forward (11) top of side frames, the two ends of the first cross bar (70) are divided Not hinged with the cross bar installing arm that foot lever of going forward (11) top of side frames extends out；Or, it is arranged on rear of side frames Between strut (40) bottom, the horizontal stroke that the two ends of the first cross bar (70) are extended out with back support rod (40) bottom of side frames respectively Bar installing arm is hinged；

Second cross bar (80), is arranged between foot lever of going forward (11) bottom of side frames, the two ends of the second cross bar (80) are divided Not hinged with the cross bar installing arm that foot lever of going forward (11) bottom of side frames extends out；

3rd cross bar (25), is arranged between the rear foot lever (20) of side frames, and the two ends of the 3rd cross bar (25) are respectively with two The cross bar installing arm that the rear foot lever (20) of side frame extends out is hinged；

4th cross bar (65), is arranged between the upper pushing hands bar (61) of side frames, the two ends of the 4th cross bar (65) respectively with The cross bar installing arm that the upper pushing hands bar (61) of side frames extends out is hinged；Or, the pushing hands bar being arranged on side frames handles (611), between, it is hinged that the two ends of the 4th cross bar (65) handle the cross bar installing arm that (611) extend out respectively with pushing hands bar；

When side frames are in expansion lock-out state, the first cross bar (70), the second cross bar (80), the 3rd cross bar (25) and the Jointed shaft on four cross bars (65) is distributed in different planes；When side frames are in gathering folded state, the first cross bar (70), Jointed shaft on second cross bar (80), the 3rd cross bar (25) and the 4th cross bar (65) is located on same axis.

A kind of baby carriage is it is characterised in that include collapsing mechanism as above.

A kind of method for folding that returns the vehicle to the garage and knock off of baby carriage returns the vehicle to the garage and knock off switch (621) it is characterised in that pulling as above, Discharge the locking mechanism that returns the vehicle to the garage and knock off, make to unlock between back support rod (40) and pushing hands bar, push down on, by side frames by front Strut (30), back support rod (40), front foot lever (10), pushing hands bar composition the first quadric chain folding so that pushing hands bar to Foot lever (11) of going forward moves and draws close, and front support rod (30) is driven by front foot lever by the first connecting rod (31) affixed with it simultaneously (10), the second quadric chain folding that first connecting rod (31), second connecting rod (32) form, thus pull after foot lever (20) upwards Front foot lever (11) is moved and is drawn close；Continue to push against, pushing hands bar, in front and back the first quadric chain of support bar composition and rear foot lever (20) it is accommodated in the both sides of front foot lever (10) respectively.

, due to employing above technical scheme, upon deployment, pushing hands bar and front foot lever, rear foot lever are all in angle for the present invention Realize linkage by two quadric chains between setting and three to fold, as long as just so releasing the locking of quadric chain Folding can easily be realized, convenient folding is laborsaving, each part long service life；By back support rod and the separately folded gathering of rear foot lever In the both sides up and down of front foot lever so that the similar length of each rod member and being fitted to each other, foldable structure is more rationally so that folding The vehicle frame volume of poststack is less.And, structure is simple, while reducing part and cost, substantially increase the stability of product.

Below the concrete structure of baby carriage of the present invention is further described as follows：

A kind of baby carriage, including two side frames being symmetrically arranged and be connected to cross bar between side frames, Each side frame includes front foot lever, rear foot lever and pushing hands bar, is provided with front-wheel below front foot lever, is provided with trailing wheel below rear foot lever.

Pushing hands bar include pushing hands bar handle, upper pushing hands bar, middle pushing hands bar and lower pushing hands bar, upper pushing hands bar is stretching up and down The mode of contracting is plugged in middle pushing hands bar and realizes locking affixed by upper pushing hands rod lock mechanism or discharge flexible, middle pushing hands bar Lower end and lower pushing hands bar upper end hinged and by middle pushing hands rod lock mechanism realize locking affixed or release folding.

In the prior art, the two-stage structure that the general employing of pushing hands bar is stretched up and down, and the pushing hands bar of baby carriage Operating altitude range is usually that clearly the length range thus determining pushing hands bar is fixing, using two-part pushing hands Bar, after contraction still length longer so that fold after vehicle frame volume still larger.As using three sections of stretching structures, then existed Locking mechanism is complicated and cannot pass through to be locked adjacent to the single switch handling or discharge in higher position, so not only not square Just use, and easily form potential safety hazard.And in the present invention, pass through between upper pushing hands bar and middle pushing hands bar to shrink, middle pushing hands Pass through between bar and lower pushing hands bar to fold, such three stage structure controls stroke short and structure is simple, and can be with support Two quadric chains of side frame form linkage, can simplify locking mechanism, reduce and expose switch, improve operation convenience and can By property.

Front foot lever is divided into go forward foot lever and lower front foot lever, and front-wheel is installed in lower front foot lever lower end, the upper end of lower front foot lever with upper The lower end of front foot lever is hinged, and the lower end of front support rod is hinged with the middle part of foot lever of going forward, the upper end of front support rod and lower pushing hands bar Lower end hinged, the upper end of back support rod is hinged with the middle part of lower pushing hands bar, the lower end of back support rod and the upper end of vertical supporting rod Hinged, the lower end of vertical supporting rod is hinged with the upper end of rear foot lever, and the middle part of vertical supporting rod is fixedly connected with the upper end of foot lever of going forward Or be integrally formed；One end of first connecting rod is fixedly connected with the lower end of front support rod or is integrally formed, the other end of first connecting rod Hinged with one end of second connecting rod, the other end of second connecting rod is hinged with the middle part of rear foot lever；So, go forward foot lever and lower pushing hands Connect front support rod and back support rod between bar and constitute folding first quadric chain, go forward between foot lever and rear foot lever By be sequentially connected first connecting rod and second connecting rod and constitute the second quadric chain, the first quadric chain of folded state with Foot lever is stacked in the upper and lower both sides of foot lever of going forward respectively afterwards.

The present invention upon deployment, pushing hands bar and front foot lever, rear foot lever arrange all in angle and three between pass through two Quadric chain is realized linkage and is folded, as long as folding, folding side just can be easily realized in the locking so releasing quadric chain Just laborsaving, each part long service life；Pushing hands bar is arranged to upper and lower three sections, front foot lever is arranged to two sections, by rear Strut and rear foot lever is separately folded draws in the both sides up and down of foot lever of going forward so that the similar length of each rod member and joining each other Close, foldable structure is more rationally so that the vehicle frame volume after folding is less.

In order to reach the effect of linkage, baby carriage passes through to pass through front support rod while the first quadric chain folding It is fixedly connected foot lever after driving the second quadric chain folding and first connecting rod between, as long as just can join thus reaching an action The purpose of the whole baby carriage of dynamic folding, after the completion of the complete folding of car load, the first quadric chain and rear foot lever paste respectively Lean against the both sides of front foot lever, be described as upper and lower both sides and be because that baby carriage arbitrarily can overturn placement after folding, do not allow Easily distinguish orientation, and baby carriage in the deployed state when three-dimensional state stable, front foot lever is in horizontal state, because This first quadric chain and rear foot lever abut in the both sides up and down of front foot lever respectively.During folding, the first double leval jib machine Structure and rear foot lever recline respectively to the both sides up and down of front foot lever, and side frames can be by being rotatably assorted in opposite directions to varus with cross bar Folding, reduces the volume size after baby carriage folds further, is convenient for carrying.

Wherein, between the middle part of the upper end of back support rod and lower pushing hands bar by return the vehicle to the garage and knock off locking mechanism realize locking affixed or Release folding.Although the locking mechanism that returns the vehicle to the garage and knock off can also be arranged on the first quadric chain, the second quadric chain other are hinged Position, but it is preferably provided between back support rod and lower pushing hands bar, and so tool has the advantage that：1st, after seat is typically mounted at Between support bar and lower pushing hands bar, the locking mechanism that returns the vehicle to the garage and knock off is also disposed at here, and direct locking has more preferable locking effect；2nd, exist The middle part of lower pushing hands bar has enough spaces and can be used for hiding setting returns the vehicle to the garage and knock off locking mechanism, so not only can avoid joint Cause potential safety hazard with locking mechanism exposure, forward easily being played by children, and provide more designs to the locking mechanism that returns the vehicle to the garage and knock off Select, the more reliable and more stable locking mechanism that returns the vehicle to the garage and knock off can be designed；3rd, the locking switch that returns the vehicle to the garage and knock off is generally located on pushing hands bar, so Design not only makes locking mechanism structure of returning the vehicle to the garage and knock off simple, easy to use and reliable, and be also convenient for and pushing hands bar on other lockings Mechanism links, and exposes switch to reduce.

Go forward the lower end of foot lever and lower front foot lever upper end be in respectively cooperate down hook-shaped, the lower end of foot lever of going forward and Before lower, the jointed shaft of the upper end of foot lever is arranged on down hook-shaped head, and the upper end of the lower end of foot lever of going forward and lower front foot lever is passed through to set Put under the forward foot in a step rod lock mechanism of hook-shaped root realize that locking is affixed or release folding.Go forward foot lever and lower front foot lever adopts Under hook-shaped articulated structure, not only have preferable support switching performance, and the front and back wheel after making to fold have more reasonable Dislocation arrangement space.

Cross bar includes：

First cross bar, be arranged on side frames goes forward between foot lever top, the two ends of the first cross bar respectively with side frames The cross bar installing arm that foot lever top extends out of going forward is hinged；Or, it is arranged between the back support rod bottom of side frames, first The two ends of cross bar are hinged with the cross bar installing arm that the back support rod bottom of side frames extends out respectively；So may insure support Montant and back support rod hinged firmly thus ensureing the first quadric chain stabilized structure.The present embodiment is preferably provided at side frames Back support rod bottom between, so when seat bar is arranged on back support rod and lower pushing hands bar, be arranged on both sides seat bar On seat webbing and the first cross bar respectively the upper and lower ends of the back support rod of side frames are all connected, further ensure Stability Analysis of Structures.

Second cross bar, be arranged on side frames goes forward between foot lever bottom, the two ends of the second cross bar respectively with side frames The cross bar installing arm that foot lever bottom extends out of going forward is hinged；So may insure stable connection between the front foot lever of side frames, Second cross bar plays foot-operated effect simultaneously.

3rd cross bar, is arranged between the rear foot lever of side frames, the two ends rear foot lever with side frames respectively of the 3rd cross bar The cross bar installing arm extending out is hinged；So may insure stable connection between the rear foot lever of side frames.

4th cross bar, is arranged between the upper pushing hands bar of side frames, the two ends of the 4th cross bar respectively with above the pushing away of side frames The cross bar installing arm that hand lever extends out is hinged；Or, be arranged on side frames pushing hands bar handle between, the two ends of the 4th cross bar Handle the cross bar installing arm extending out respectively with pushing hands bar hinged.So may insure and connect surely between the pushing hands bar of side frames Gu.

When side frames are in expansion lock-out state, the hinge on the first cross bar, the second cross bar, the 3rd cross bar and the 4th cross bar Spindle is distributed in different planes；When side frames be in gathering folded state when, the first cross bar, the second cross bar, the 3rd cross bar and Jointed shaft on 4th cross bar is located on same axis.So, when side frame draws in and folds, can be along same axis to side frames Carry out to turnover so that the vehicle frame volume after folding is less；And when side frame launches locking, may insure Stability Analysis of Structures again, Avoid go-cart to produce in use to loosen or folding.

First cross bar is arranged on the position near rear foot lever for the foot lever of going forward, and the second cross bar is arranged close to the portion of lower front foot lever Position.Reason is so selected to be in limited space, as far as possible can be in fixing both sides away from the first cross bar and the second cross bar Foot lever aspect of going forward obtains the bigger arm of force, just can stablize the foot lever of going forward of both sides with less power.Meanwhile, the first cross bar peace It is contained in foot lever of going forward and the position of rear foot lever is provided with vertical supporting rod, be the hinged position of multiple parts, can carry at this The integral rigidity of high joint part, thus improve car load rigidity.

Cross bar is provided with four groups, and two groups are arranged on two to going forward between foot lever, one group be arranged on two to rear foot lever between, another Group is arranged between pushing hands bar, is the reason so select, although the side frame of three groups of cross bars fixing enough both sides in theory, It is that side frame is provided with multiple movable parts, the point that each hinged or axle connects is not enough to keep all moving components all in same Plane, therefore, four groups of cross bars of setting are necessary.And in baby carriage in use, bear strength maximum Be exactly forward and backward foot lever, as the firm rigidity directly affecting whole handcart of the forward and backward foot lever of weighing component.

The mounting structure of above-mentioned each cross bar may refer to Publication No. CN103507846A and the patent of CN204222933U Document, the present embodiment illustrates taking the 3rd cross bar as a example, is provided with the cross bar installing arm for installing and fold on rear foot lever, Cross bar installing arm is divided into the afterbody fixing with rear foot lever and the head away from rear foot lever, the head of cross bar installing arm is installed hinged Spindle, same is provided with for the cross bar installing arm storage to storage cross bar installing arm during to turnover in side frame on the 3rd cross bar Groove, is arranged with the cross bar installing hole of coordination hinge axle installation in the upper and lower of cross bar installing arm accommodating groove.Cross bar installing arm Shape and structure can be avoided according to part when folding and the needs of structural support are designed.

The mounting structure of seat and seat webbing can adopt structure used in Folding trolley of the prior art, The present invention only provides a kind of preferred embodiment for explanation：After seat bar is arranged on by the first connector and the second connector On support bar and lower pushing hands bar, the first connector is hinged with back support rod and is fixedly connected with seat bar, and the second connector is installed On lower pushing hands bar, seat bar is shelved on the second connector or is slidably connected with the second connector sleeve, the seat of side frames Chair bar keeps being stably connected with entirely through the flexible material on sheathed pushing hands bar and car body.The load-bearing of seat bar is connected by first Part, the second connector and flexible material shared.Wherein flexible material can be in the form of being covered from cloth.

Above-mentioned upper pushing hands rod lock mechanism can adopt structure used in Folding trolley of the prior art, and The present invention adopts a kind of preferred embodiment, is described as follows：

Upper pushing hands rod lock mechanism includes pushing hands bar telescoping switch, upper pushing hands lever lock rationed marketing, shell fragment and shell fragment set, shell fragment It is fixed on the insertion section of pushing hands bar in the insertion of pushing hands bar, the fixing upper pushing hands lever lock rationed marketing of outer warping end of shell fragment, upper pushing hands lever lock Rationed marketing is stretched out pushing hands bar and is coordinated with the lock pin holes on middle pushing hands bar, and shell fragment set is set in outside shell fragment and is controlled by slip The outer warping end of shell fragment is included or is stuck up, and shell fragment set is by steel wire with the upper pushing hands bar telescoping switch being arranged on pushing hands bar on the handle even Connect.When pressing pushing hands bar telescoping switch, steel wire pulls shell fragment set slip that the outer warping end of shell fragment is included shell fragment set and makes shell fragment Upper pushing hands lever lock rationed marketing on outer warping end therefrom in the lock pin holes on pushing hands bar abjection unlock state, so go up pushing hands bar Can move up and down in middle pushing hands bar realize pushing hands bar stretch；Unclamp and press pushing hands bar telescoping switch, upper pushing hands bar moves After putting in place, shell fragment resets under its own resilient effect, and the outer warping end of shell fragment sticks up shell fragment set so that above pushing away on shell fragment outer warping end Position locking is realized in lock pin holes on pushing hands bar in the insertion of hand lever stop pin.Middle pushing hands bar arranges multiple stop pins Hole, so can adjust the height of pushing hands bar with user-friendly.

The above-mentioned locking mechanism that returns the vehicle to the garage and knock off can adopt structure used in Folding trolley of the prior art, for example public The number of opening is the structure disclosed in patent document of CN201257998Y, and the present invention adopts a kind of preferred embodiment, illustrates such as Under：

The locking mechanism that returns the vehicle to the garage and knock off includes return the vehicle to the garage and knock off switch and side frame locking piece, and the middle part of lower pushing hands bar is provided with and can accommodate rear support The groove of bar upper end, the upper end of back support rod insert in this groove and with the side wall of this groove hinged, rear support of passing through jointed shaft The upper end of bar is provided with sticking department, and when back support rod rotates with respect to lower pushing hands bar, sticking department can be movable in groove, side frame Locking piece is slidably arranged in lower pushing hands bar, and the switch that returns the vehicle to the garage and knock off being arranged on middle pushing hands bar is connected with side frame locking piece by steel wire Connect；When side frame locking piece stretches in groove with the sticking department of back support rod upper end cooperation positioning, back support rod with respect under push away Hand lever can not rotate thus locking both realizing is affixed, and two quadric chains of such side frame are locked cannot activity；Work as side Frame locking piece return and with the lock part of back support rod upper end from when, back support rod can rotate with respect to lower pushing hands bar, this Two quadric chains of sample side frame activity can carry out folding.So, not only return the vehicle to the garage and knock off switch and the connection row of side frame locking piece Journey is short, and structure is simple, and locking effect is good, and the locking mechanism that returns the vehicle to the garage and knock off is hidden and is arranged in the middle part of lower pushing hands bar, and position is in seat Back upper place is difficult by child getting in contact, safer.

Wherein, side frame locking piece and sticking department preferably employ clamping, wedge surface or pin joint and realize cooperation positioning, so have more Good locking effect；Side frame locking piece is stretched in groove by acting force of the spring.

Above-mentioned middle pushing hands rod lock mechanism can adopt structure used in Folding trolley of the prior art, and The present invention adopts a kind of preferred embodiment, is described as follows：

Middle pushing hands rod lock mechanism includes STATEMENT OF FEDERALLY SPONSORED and middle pushing hands rod lock part, and STATEMENT OF FEDERALLY SPONSORED is slidably arranged in lower pushing hands bar Middle part is simultaneously connected with the linkage portion being arranged on back support rod upper end, and middle pushing hands rod lock part is slidably arranged in lower pushing hands bar top simultaneously Coordinate with the lock hole grafting being arranged on middle pushing hands bar lower end, middle pushing hands rod lock part is connected with STATEMENT OF FEDERALLY SPONSORED by steel wire, in push away Hand lever locking piece gives the trend of the lock hole on pushing hands bar in insertion by spring；When back support rod turns with respect to lower pushing hands bar When dynamic, linkage portion drives STATEMENT OF FEDERALLY SPONSORED to move, STATEMENT OF FEDERALLY SPONSORED drive by steel wire in locking on pushing hands rod lock part and middle pushing hands bar Hole locking latch or separation discharge.So, the locking of middle pushing hands bar folding and release are carried out with the folding of quadric chain Linkage, it is not necessary to other increasing exposes switch come pushing hands bar folding in controlling, reduces cost, improves security, and lead to Cross the matching relationship of pushing hands rod lock part, STATEMENT OF FEDERALLY SPONSORED and linkage portion in coordinate design, can be in quadric chain folding to properly The folding of middle pushing hands bar is restarted in position, using convenient reasonable.

Linkage portion can be various ways with the cooperation of STATEMENT OF FEDERALLY SPONSORED, as long as the rotation of linkage portion can be converted to pulling steel Line.Preferred in the present invention, linkage portion is passed through hanging groove and is connected with the STATEMENT OF FEDERALLY SPONSORED hook of hook form, and structure is simple, cooperation Reliable, small volume.In other embodiments, both can also be coordinated by way of elongated groove/opening and pin or The wire loop of steel wire is directly articulated in linkage portion.

Because the moving direction of middle pushing hands rod lock part is inconsistent with the moving direction of STATEMENT OF FEDERALLY SPONSORED, middle pushing hands rod lock Part and STATEMENT OF FEDERALLY SPONSORED need to connect by turning member, and this turning member can be the pulley or pillar detouring for steel wire.At this In bright preferably, in the internal hinged setting in the upper end of lower pushing hands bar one lever piece, one end of lever piece is by elongated groove/opening, pin It is flexibly connected with middle pushing hands rod lock part, the other end of lever piece is connected with STATEMENT OF FEDERALLY SPONSORED by steel wire, this spline structure is simple, adjust Convenient.

The grafting fit structure of the lock hole on middle pushing hands rod lock part and middle pushing hands bar may be referred to Publication No. Lock gear structure in the patent document of CN204415487U.Preferred in the present invention, middle pushing hands rod lock part is a pin, This pin is not coaxial with the jointed shaft of middle pushing hands bar and lower pushing hands bar, and this spline structure is simple, small volume, and locking is reliable.

Above-mentioned forward foot in a step rod lock mechanism, including lower forward foot in a step rod lock hook and lower forward foot in a step rod lock portion, lower forward foot in a step rod lock hook Middle part hinged be arranged in hook-shaped root under foot lever of going forward, one end of lower forward foot in a step rod lock hook is and lower forward foot in a step rod lock portion The hook portion of hook cooperation, one end of lower forward foot in a step rod lock hook is to stick up the release portion going forward outside foot lever, and lower forward foot in a step rod lock hook is even It is connected to elastic component thus giving the trend near lower forward foot in a step rod lock portion for the hook portion；Instantly the release portion of forward foot in a step rod lock hook is folded Rear foot lever when pushing back, the hook portion of lower forward foot in a step rod lock hook and lower forward foot in a step rod lock part are from thus lower front foot lever can be with folding； When rear foot lever and lower front foot lever launch, the release portion of lower forward foot in a step rod lock hook outwards sticks up, the hook portion of lower forward foot in a step rod lock hook Coordinate with lower forward foot in a step rod lock portion hook, thus lower front foot lever and foot lever locking of going forward are affixed.So, will using locking hook forms Before lower foot lever be folded with after side frame folding, more meet use habit, and by interoperation so that folding operation Simpler convenience.

The problem of " after left and right sides support doubling is drawn in, because position of taking is not to easily scattering " in order to solve, the 4th Side frame doubling locking mechanism is provided with cross bar, including the doubling locking switch being slidably arranged on the 4th cross bar and doubling locking Pin, one end of doubling stop pin is connected with doubling locking switch, and the other end of doubling stop pin stretches out the end of the 4th cross bar simultaneously Coordinate thus locking both affixed with the lock hole grafting being arranged in cross bar installing arm, cross bar installing arm is fixed on pushing hands On bar, the end of cross bar installing arm is provided with two lock holes corresponding to side frame doubled state and side frame deployed condition respectively.This Sample, can realize locking in side frame doubled state and side frame deployed condition, need to operate doubling locking switch could unlock receipts Folding.

Ceiling frame be sleeved on the 4th cross bar can before and after overturn, and make it can set level by bit-stopping structure to make for sunshade With.

The use process of above-mentioned baby carriage is as follows：

Baby carriage launch use state when, upper pushing hands rod lock mechanism, middle pushing hands rod lock mechanism, locking of returning the vehicle to the garage and knock off Mechanism, forward foot in a step rod lock mechanism and side frame doubling locking mechanism are in locking affixed state, and whole vehicle frame supports firm.Accurate Standby return the vehicle to the garage and knock off folding when, first by ceiling frame rotate to pushing hands bar parastate；When starting to return the vehicle to the garage and knock off, press the upper of pushing hands bar on the handle Pushing hands bar telescoping switch, pushing hands rod lock mechanism in release, push down on, upper pushing hands bar is shunk passage to middle pushing hands bar bottom Portion；Then pull the switch that returns the vehicle to the garage and knock off, discharge the locking mechanism that returns the vehicle to the garage and knock off, make to unlock between back support rod and lower pushing hands bar, push down on Pressure, the first quadric chain folding that side frames are made up of front support rod, back support rod, foot lever of going forward, lower pushing hands bar, make Pushing hands bar must be descended, and front foot lever moves and draws close upwards, and front support rod is driven by the upper forward foot in a step by the first connecting rod affixed with it simultaneously Bar, first connecting rod, second connecting rod composition the second quadric chain folding, thus pull after foot lever front foot lever moves and leans on upwards Hold together；After back support rod turns to certain position, by be linked so that in pushing hands rod lock mechanism release, lower pushing hands bar with Middle pushing hands bar unlocks, and continues to push against, and makes pushing hands bar in folding while the front foot lever motion upwards of lower pushing hands bar.Pushing hands Bar, in front and back the first quadric chain of support bar composition and rear foot lever are accommodated in the both sides of foot lever of going forward respectively, and rear foot lever will be front Foot lever locking mechanism discharges.Front-wheel is adjusted to forward position, lower front foot lever is folded to below rear foot lever, go forward foot lever and Under the hinged cooperation position of foot lever before lower, hook-shaped design makes the dislocation arrangement of front and back wheel more reasonable.Side frame doubling locking is pulled to open Close, release side frames doubling locking, by side frames along the first cross bar, the both sides of the second cross bar, the 3rd cross bar and the 4th cross bar Hinge axes turn down, and after side frames doubling puts in place, side frames are locked by side frame doubling locking mechanism, complete whole vehicle frame folding.

Brief description

Fig. 1 is the structural representation of the present invention；

Fig. 2 is one of folding schematic diagram of the present invention；

Fig. 3 is the two of the folding schematic diagram of the present invention；

Fig. 4 is the three of the folding schematic diagram of the present invention；

Fig. 5 is the four of the folding schematic diagram of the present invention；

Fig. 6 is the five of the folding schematic diagram of the present invention；

Fig. 7 is the six of the folding schematic diagram of the present invention；

Fig. 8 is the seven of the folding schematic diagram of the present invention；

Fig. 9 is the eight of the folding schematic diagram of the present invention；

Figure 10 is the nine of the folding schematic diagram of the present invention；

Figure 11 is the ten of the folding schematic diagram of the present invention；

Figure 12 is the side view of the present invention；

Figure 13 is the structural representation of upper pushing hands rod lock mechanism；

Figure 14 is to return the vehicle to the garage and knock off the structural representation of locking mechanism；

Figure 15 is one of structural representation of middle pushing hands rod lock mechanism；

Figure 16 is the two of the structural representation of middle pushing hands rod lock mechanism；

Figure 17 is the structural representation of forward foot in a step rod lock mechanism；

Figure 18 is the structural representation of side frame doubling locking mechanism.

Specific embodiment

Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.

In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " clockwise ", " inverse The orientation of the instructions such as hour hands " or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of description originally Invention and simplification description, rather than indicate or imply that the device of indication or element must have specific orientation, with specifically side Position construction and operation, are therefore not considered as limiting the invention.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple " are meant that two Individual or two or more, limits unless otherwise clear and definite.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；It can be machine Tool connects or electrically connects；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two units Connection within part.For the ordinary skill in the art, above-mentioned term can be understood as the case may be at this Concrete meaning in bright.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score The first and second feature directly contacts can be included not to be directly contact but passes through it is also possible to include the first and second features Between other characterisation contact.And, fisrt feature second feature " on ", that " top " and " above " include first is special Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of Fisrt feature level height is less than second feature.

As shown in figs. 1 and 12, a kind of baby carriage, including two side frames being symmetrically arranged and be connected to two Cross bar between side frame, each side frame includes front foot lever 10, rear foot lever 20 and pushing hands bar, is provided with front-wheel below front foot lever 10 13, below rear foot lever 20, trailing wheel 21 is installed.

As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, pushing hands bar includes pushing hands bar and handles 611, upper pushing hands bar 61, middle pushing hands bar 62 With lower pushing hands bar 50, upper pushing hands bar 61 is plugged in middle pushing hands bar 62 and by upper pushing hands lever lock in the way of can stretching up and down Determine mechanism and realize that locking is affixed or release is flexible, the upper end of the lower end of middle pushing hands bar 62 and lower pushing hands bar 50 is hinged and pushes away in passing through Hand lever locking mechanism is realized locking affixed or release folding.

As shown in Figures 1 to 6, front foot lever 10 is divided into go forward foot lever 11 and lower front foot lever 12, and lower front foot lever 12 lower end is installed Front-wheel 13, the upper end of lower front foot lever 12 is hinged with the lower end of foot lever 11 of going forward, the lower end of front support rod 30 and foot lever 11 of going forward Middle part is hinged, and the upper end of front support rod 30 is hinged with the lower end of lower pushing hands bar 50, the upper end of back support rod 40 and lower pushing hands bar 50 Middle part hinged, the lower end of back support rod 40 is hinged with the upper end of vertical supporting rod 14, the lower end of vertical supporting rod 14 and rear foot lever 20 Upper end hinged, the middle part of vertical supporting rod 14 is fixedly connected with the upper end of foot lever 11 of going forward or is integrally formed；First connecting rod 31 One end is fixedly connected with the lower end of front support rod 30 or is integrally formed, one end of the other end of first connecting rod 31 and second connecting rod 32 Hinged, the other end of second connecting rod 32 is hinged with the middle part of rear foot lever 20；So, go forward to connect between foot lever 11 and lower pushing hands bar 50 Connect front support rod 30 and back support rod 40 and constitute folding first quadric chain, go forward between foot lever 11 and rear foot lever 20 By being sequentially connected first connecting rod 31 and second connecting rod 32 and constituting the second quadric chain, the first double leval jib machine of folded state Structure and rear foot lever 20 are stacked in foot lever of going forward respectively, and about 11 both sides.

Wherein, between the middle part of the upper end of back support rod 40 and lower pushing hands bar 50, locking is realized by the locking mechanism that returns the vehicle to the garage and knock off solid Connect or discharge folding.Although the locking mechanism that returns the vehicle to the garage and knock off can also be arranged on the first quadric chain, the second quadric chain other Articulated position, but it is preferably provided between back support rod 40 and lower pushing hands bar 50, and so tool has the advantage that：1st, seat is general It is arranged between back support rod and lower pushing hands bar, the locking mechanism that returns the vehicle to the garage and knock off is also disposed at here, direct locking has more preferable locking Effect；2nd, the middle part in lower pushing hands bar 50 has enough spaces and can be used for hiding setting and returns the vehicle to the garage and knock off locking mechanism, so not only Joint can be avoided and locking mechanism exposes, forward easily being played by children causes potential safety hazard, and carry to the locking mechanism that returns the vehicle to the garage and knock off Supply more design alternatives, the more reliable and more stable locking mechanism that returns the vehicle to the garage and knock off can have been designed；3rd, the locking switch that returns the vehicle to the garage and knock off is generally located on On pushing hands bar, so design is not only so that locking mechanism structure of returning the vehicle to the garage and knock off is simple, easy to use and reliable, and is also convenient for and pushing hands bar On other locking mechanisms linkage, with reduce expose switch.

As shown in figure 17, go forward the lower end of foot lever 11 and lower front foot lever 12 upper end be in respectively cooperate down hook-shaped, The go forward jointed shaft 122 of upper end of the lower end of foot lever 11 and lower front foot lever 12 is arranged on down hook-shaped head, foot lever 11 of going forward The upper end of lower end and lower front foot lever 12 is realized locking affixed by the forward foot in a step rod lock mechanism being arranged on down hook-shaped root or is released Put folding.Go forward foot lever and lower front foot lever using under hook-shaped articulated structure, not only have preferable support switching performance, and make Front and back wheel after must folding has more reasonably dislocation arrangement space.

Cross bar includes：

First cross bar 70, be arranged on side frames goes forward between foot lever 11 top, and the two ends of the first cross bar 70 are respectively with two The cross bar installing arm that foot lever 11 top of going forward of side frame extends out is hinged；Or, it is arranged under the back support rod 40 of side frames Between portion, the two ends of the first cross bar 70 are hinged with the cross bar installing arm that back support rod 40 bottom of side frames extends out respectively； So may insure vertical supporting rod 14 and back support rod 40 hinged firmly thus ensureing the first quadric chain stabilized structure.This reality Apply between back support rod 40 bottom that example is preferably provided at side frames, so when seat bar 41 be arranged on back support rod 40 and under push away When on hand lever 50, it is arranged on seat webbing in both sides seat bar 41 and the first cross bar 70 respectively to the back support rod 40 of side frames Upper and lower ends are all connected, and further ensure Stability Analysis of Structures.

Second cross bar 80, be arranged on side frames goes forward between foot lever 11 bottom, and the two ends of the second cross bar 80 are respectively with two The cross bar installing arm that foot lever 11 bottom of going forward of side frame extends out is hinged；So may insure between the front foot lever 10 of side frames Stable connection, simultaneously the second cross bar 80 play foot-operated effect.

3rd cross bar 25, is arranged between the rear foot lever 20 of side frames, the two ends of the 3rd cross bar 25 respectively with side frames The cross bar installing arm that foot lever 20 extends out afterwards is hinged；So may insure stable connection between the rear foot lever 20 of side frames.

4th cross bar 65, is arranged between the upper pushing hands bar 61 of side frames, the two ends of the 4th cross bar 65 respectively with side frames The cross bar installing arm that extends out of upper pushing hands bar 61 hinged；Or, the pushing hands bar being arranged on side frames handles between 611, the It is hinged that the two ends of four cross bars 65 handle the 611 cross bar installing arms extending out respectively with pushing hands bar.So may insure side frames Pushing hands bar between stable connection.

As shown in figure 1, when side frames are in expansion lock-out state, the first cross bar 70, the second cross bar 80, the 3rd cross bar 25 It is distributed in different planes with the jointed shaft on the 4th cross bar 65；As shown in Fig. 6-Figure 11, when side frames are in gathering rugosity During state, the jointed shaft on the first cross bar 70, the second cross bar 80, the 3rd cross bar 25 and the 4th cross bar 65 is located on same axis.This Sample, side frame draw in fold when, can along same axis side frames are carried out to turnover so that fold after vehicle frame volume more Little；And when side frame launches locking, may insure Stability Analysis of Structures again, it is to avoid go-cart produces in use and loosens or folding.

The mounting structure of above-mentioned each cross bar may refer to Publication No. CN103507846A and the patent of CN204222933U Document, the present embodiment illustrates taking the 3rd cross bar 25 as a example, is provided with the cross bar peace for installing and fold on rear foot lever 20 Dress arm, cross bar installing arm is divided into the afterbody fixing with rear foot lever 20 and the head away from rear foot lever 20, the head of cross bar installing arm On jointed shaft is installed, same is provided with for the horizontal stroke to storage cross bar installing arm during to turnover in side frame on the 3rd cross bar 25 Bar installing arm accommodating groove, is arranged with the cross bar installing hole of coordination hinge axle installation in the upper and lower of cross bar installing arm accommodating groove. The shape and structure of cross bar installing arm can be avoided according to part when folding and the needs of structural support are designed.

The mounting structure of seat and seat webbing can adopt structure used in Folding trolley of the prior art, The present invention only provides a kind of preferred embodiment for explanation：As shown in figure 1, seat bar 41 passes through the first connector 411 and the Two connectors 412 are arranged on back support rod 40 and lower pushing hands bar 50, the first connector 411 hinged with back support rod 40 and with seat Chair bar 41 is fixedly connected, and the second connector 412 is arranged on lower pushing hands bar 50, and seat bar 41 is shelved on the second connector 412 Or it is slidably connected with the second connector 412 sleeve, the seat bar 41 of side frames is entirely through soft on sheathed pushing hands bar Material and car body keep being stably connected with.The load-bearing of seat bar 41 is by the first connector 411, the second connector 412 and flexible material Shared.Wherein flexible material can be in the form of being covered from cloth.

As shown in Figure 12 and Figure 13, upper pushing hands rod lock mechanism includes pushing hands bar telescoping switch 6111, upper pushing hands rod lock Pin 613, shell fragment 614 and shell fragment set 612, shell fragment 614 is fixed on the insertion section of pushing hands bar 62 in pushing hands bar 61 insertion, shell fragment The fixing upper pushing hands lever lock rationed marketing 613 of 614 outer warping end, upper pushing hands lever lock rationed marketing 613 stretch out pushing hands bar 61 and with middle pushing hands bar Lock pin holes cooperation on 62, shell fragment set 612 is set in outside shell fragment 614 and is included by the outer warping end controlling shell fragment 614 that slides Or stick up, shell fragment set 612 passes through steel wire and is connected with being arranged on pushing hands bar and handling the upper pushing hands bar telescoping switch 6111 on 611.Press When going up down pushing hands bar telescoping switch 6111, steel wire pulls shell fragment set 612 to slide and the outer warping end of shell fragment 614 is included shell fragment set 612 Make to deviate to unlock in lock pin holes therefrom on pushing hands bar 62 for the upper pushing hands lever lock rationed marketing 613 on shell fragment 614 outer warping end State, so go up pushing hands bar 61 can move up and down in middle pushing hands bar 62 realize pushing hands bar stretch；Unclamp and press pushing hands bar Telescoping switch 6111, after upper pushing hands bar 61 moves into place, shell fragment 614 resets under its own resilient effect, the outer warping end of shell fragment 614 Stick up the lock pin holes on pushing hands bar 62 during shell fragment set 612 makes the upper pushing hands lever lock rationed marketing 613 on shell fragment 614 outer warping end insert In realize position locking.Multiple lock pin holes are arranged on middle pushing hands bar 62, the height that so can adjust pushing hands bar is with convenient User uses.

As shown in Figure 12, Figure 14, the locking mechanism that returns the vehicle to the garage and knock off includes return the vehicle to the garage and knock off switch 621 and side frame locking piece 51, lower pushing hands bar 50 Middle part be provided with the groove 52 that can accommodate back support rod 40 upper end, the upper end of back support rod 40 insert in this groove 52 and with this The side wall of groove pass through jointed shaft hinged, the upper end of back support rod 40 is provided with sticking department 42, when back support rod 40 with respect under push away When hand lever 50 rotates, sticking department 42 can be movable in groove 52, and side frame locking piece 51 is slidably arranged in lower pushing hands bar 50, peace The switch 621 that returns the vehicle to the garage and knock off being contained on pushing hands bar 62 is connected with side frame locking piece 51 by steel wire；When side frame locking piece 51 stretch into recessed When positioning with sticking department 42 cooperation of back support rod 40 upper end in groove 52, back support rod 40 can not rotate with respect to lower pushing hands bar 50 Thus locking is affixed both realizing, two quadric chains of such side frame are locked cannot activity；When side frame locking piece 51 moves back When returning and separating with the sticking department 42 of back support rod 40 upper end, back support rod 40 can rotate with respect to lower pushing hands bar 50, so Two quadric chains of side frame activity can carry out folding.So, not only return the vehicle to the garage and knock off switch and the connection stroke of side frame locking piece Short, structure is simple, and locking effect is good, and the locking mechanism that returns the vehicle to the garage and knock off is hidden and is arranged in the middle part of lower pushing hands bar, and position is after seat Top is difficult by child getting in contact, safer.

Wherein, side frame locking piece 51 and sticking department 42 preferably employ clamping, wedge surface or pin joint and realize cooperation positioning, so have There is more preferable locking effect；Side frame locking piece 51 is stretched in groove 52 by acting force of the spring.

As shown in Figure 12, Figure 15, Figure 16, middle pushing hands rod lock mechanism includes STATEMENT OF FEDERALLY SPONSORED 53 and middle pushing hands rod lock part 54, STATEMENT OF FEDERALLY SPONSORED 53 is slidably arranged in the middle part of lower pushing hands bar 50 and is connected with the linkage portion 44 being arranged on back support rod 40 upper end, in push away Hand lever locking piece 54 is slidably arranged in lower pushing hands bar 50 top and is joined with lock hole 622 grafting being arranged on middle pushing hands bar 62 lower end Close, middle pushing hands rod lock part 54 is connected with STATEMENT OF FEDERALLY SPONSORED 53 by steel wire, middle pushing hands rod lock part 54 is given in insertion by spring The trend of the lock hole 622 on pushing hands bar 62；When back support rod 40 rotates with respect to lower pushing hands bar 50, linkage portion 44 drives connection Moving part 53 is mobile, STATEMENT OF FEDERALLY SPONSORED 53 drive by steel wire in lock hole 622 grafting on pushing hands rod lock part 54 and middle pushing hands bar 62 Locking or separation discharge.So, the locking of middle pushing hands bar 62 folding and release are linked with the folding of quadric chain, Do not need in addition to increase and expose switch come pushing hands bar folding in controlling, reduce cost, improve security, and by coordinating The matching relationship of pushing hands rod lock part 54, STATEMENT OF FEDERALLY SPONSORED 53 and linkage portion 44 in design, can be in quadric chain folding to properly The folding of middle pushing hands bar is restarted in position, using convenient reasonable.

Linkage portion 44 can be various ways with the cooperation of STATEMENT OF FEDERALLY SPONSORED 53, as long as can be converted to the rotation of linkage portion drawing Dynamic steel wire.Preferred in the present embodiment, as shown in figure 15, linkage portion 44 passes through STATEMENT OF FEDERALLY SPONSORED 53 hook of hanging groove and hook form Hang and connect, structure is simple, cooperation is reliable, small volume.In other embodiments, both can also be by elongated groove/opening and pin The mode of post coordinates or the wire loop of steel wire is directly articulated in linkage portion.

Because the moving direction of middle pushing hands rod lock part 54 is inconsistent with the moving direction of STATEMENT OF FEDERALLY SPONSORED 53, middle pushing hands bar Locking piece 54 and STATEMENT OF FEDERALLY SPONSORED 53 need to connect by turning member, this turning member can be the pulley detouring for steel wire or Post.Preferred in the present embodiment, as shown in figure 16, in the internal hinged setting in the upper end of lower pushing hands bar 50 one lever piece 55, lever One end of part 55 is flexibly connected with middle pushing hands rod lock part 54 by elongated groove/opening, pin, and the other end of lever piece 55 passes through steel Line is connected with STATEMENT OF FEDERALLY SPONSORED 53, and this spline structure is simple, easy to adjust.

The grafting fit structure of the lock hole 622 on middle pushing hands rod lock part 54 and middle pushing hands bar 62 may be referred to publication number For the lock gear structure in the patent document of CN204415487U.Preferred in the present embodiment, as shown in figure 16, middle pushing hands bar Locking piece 54 is a pin, and this pin is not coaxial with the jointed shaft of middle pushing hands bar 62 and lower pushing hands bar 50, and this spline structure is simple, body Long-pending little, locking is reliable.

As shown in figure 17, above-mentioned forward foot in a step rod lock mechanism, including lower forward foot in a step rod lock hook 111 and lower forward foot in a step rod lock portion 121, the middle part of lower forward foot in a step rod lock hook 111 is hinged to be arranged in hook-shaped root under foot lever 11 of going forward, lower forward foot in a step rod lock hook 111 one end is the hook portion 1112 with the cooperation of lower forward foot in a step rod lock portion 121 hook, and one end of lower forward foot in a step rod lock hook 111 is to stick up The release portion 1111 going out to go forward outside foot lever 11, lower forward foot in a step rod lock hook 111 is connected with elastic component thus to give hook portion 1112 close The trend in lower forward foot in a step rod lock portion 121；Instantly the rear foot lever 20 that the release portion 1111 of forward foot in a step rod lock hook 111 is folded pushes back When, the hook portion 1112 of lower forward foot in a step rod lock hook 111 is separated with lower forward foot in a step rod lock portion 121, thus lower front foot lever 12 can be with folding； When rear foot lever 20 and lower front foot lever 12 launch, the release portion 1111 of lower forward foot in a step rod lock hook 111 outwards sticks up, lower forward foot in a step lever lock Determine hook portion 1112 and the cooperation of lower forward foot in a step rod lock portion 121 hook of hook 111, thus lower front foot lever 12 is solid with foot lever 11 locking of going forward Connect.So, using locking hook forms being folded with lower front foot lever after side frame folding, more meet use habit, and By interoperation so that the simpler convenience of folding operation.

The problem of " after left and right sides support doubling is drawn in, because position of taking is not to easily scattering " in order to solve, the 4th Side frame doubling locking mechanism is provided with cross bar, as shown in Fig. 1, Figure 18, including the doubling being slidably arranged on the 4th cross bar 65 Locking switch 651 and doubling stop pin 6511, one end of doubling stop pin 6511 is connected with doubling locking switch 651, and doubling is locked The other end of rationed marketing 6511 stretch out the 4th cross bar 65 end and with lock hole 6121 grafting being arranged in cross bar installing arm 612 Thus locking both affixed, cross bar installing arm 611 is fixed on pushing hands bar 61, and the end of cross bar installing arm 611 sets for cooperation It is equipped with two lock holes 6121 corresponding to side frame doubled state and side frame deployed condition respectively.So, in side frame doubled state and Side frame deployed condition can be realized locking, and needs to operate doubling locking switch could unlock folding.

As shown in Figure 1, Figure 2, shown in Figure 18, ceiling frame 652 is sleeved on the 4th cross bar 65 and can overturn in front and back, and passes through stop bit Structure makes it can set level for sunshade use.

The use process of above-mentioned baby carriage is as follows：

As shown in figure 1, baby carriage is when launching use state, upper pushing hands rod lock mechanism, middle pushing hands rod lock machine Structure, the locking mechanism that returns the vehicle to the garage and knock off, forward foot in a step rod lock mechanism and side frame doubling locking mechanism are in locking affixed state, whole vehicle frame Support firm.

As shown in Fig. 2 prepare return the vehicle to the garage and knock off folding when, first by ceiling frame 652 rotate to pushing hands bar parastate；

As shown in figure 3, pressing pushing hands bar handles the upper pushing hands bar telescoping switch 6111 on 611, pushing hands rod lock in release Mechanism, pushes down on, and upper pushing hands bar 61 is shunk passage to middle pushing hands bar 62 bottom；

As shown in figure 4, then pulling the switch 621 that returns the vehicle to the garage and knock off, discharging the locking mechanism that returns the vehicle to the garage and knock off, making back support rod 40 and lower pushing hands bar Unlock between 50, push down on, by side frames by front support rod 30, back support rod 40, foot lever 11 of going forward, lower pushing hands bar 50 composition the first quadric chain foldings so that lower pushing hands bar 50 front foot lever 11 moves and draws close upwards, front support rod simultaneously 30 drive, by the first connecting rod 31 affixed with it, the two or four being made up of foot lever 11 of going forward, first connecting rod 31, second connecting rod 32 Linkage folding, thus pull after foot lever 20 front foot lever 11 moves and draws close upwards；

As shown in figure 5, after back support rod 40 turns to certain position, by be linked so that in pushing hands rod lock machine Structure discharges, and lower pushing hands bar 50 unlocked with middle pushing hands bar 62, continue to push against, and makes that front foot lever 11 moves upwards in lower pushing hands bar 50 While folding in pushing hands bar 62.

As shown in fig. 6, pushing hands bar, in front and back the first quadric chain of support bar composition and rear foot lever 20 are accommodated in respectively The both sides of front foot lever 11, forward foot in a step rod lock mechanism is discharged by rear foot lever 20.

As shown in fig. 7, adjusting front-wheel 13 to forward position, lower front foot lever 12 is folded to below rear foot lever 20, such as Shown in Fig. 8, hook-shaped design under go forward foot lever and the hinged cooperation position of lower front foot lever makes the dislocation arrangement of front and back wheel more reasonable.

As shown in figure 9, pulling side frame doubling locking switch 651, release side frames doubling locking, side frames are horizontal along first Bar 70, the hinge axes turnover of the both sides of the second cross bar 80, the 3rd cross bar 25 and the 4th cross bar 65, as shown in Figure 10, Figure 11, two After side frame doubling puts in place, side frames are locked by side frame doubling locking mechanism, complete whole vehicle frame folding.

A kind of collapsing mechanism of baby carriage, including two side frames being symmetrically arranged and be connected to side frames it Between cross bar, each side frame includes front foot lever 10, rear foot lever 20 and pushing hands bar, is provided with front-wheel 13, the rear foot below front foot lever 10 Trailing wheel 21 is installed below bar 20, the lower end of front support rod 30 is hinged with the middle part of front foot lever 10, the upper end of front support rod 30 with The lower end of pushing hands bar is hinged, and the upper end of back support rod 40 is hinged with the middle part of pushing hands bar, and the lower end of back support rod 40 is erected with supporting The upper end of bar 14 is hinged, and the lower end of vertical supporting rod 14 is hinged with the upper end of rear foot lever 20, the middle part of vertical supporting rod 14 and front foot lever 10 upper end is fixedly connected or is integrally formed；One end of first connecting rod 31 is fixedly connected with the lower end of front support rod 30 or one becomes Type, the other end of first connecting rod 31 is hinged with one end of second connecting rod 32, in the other end of second connecting rod 32 and rear foot lever 20 Portion is hinged；So, it is connected front support rod 30 and back support rod 40 between front foot lever 10 and pushing hands bar and constitute folding first Quadric chain, by being sequentially connected first connecting rod 31 and second connecting rod 32 and constituting second between front foot lever 10 and rear foot lever 20 Quadric chain, the first quadric chain of folded state and rear foot lever 20 are stacked in front foot lever respectively, and about 10 both sides；Wherein, Realize locking affixed or release folding by the locking mechanism that returns the vehicle to the garage and knock off between the middle part of the upper end of back support rod 40 and pushing hands bar.

A kind of baby carriage, including collapsing mechanism as above.

The method for folding that returns the vehicle to the garage and knock off of a kind of baby carriage as above, pulls the switch 621 that returns the vehicle to the garage and knock off, and discharges the locking machine that returns the vehicle to the garage and knock off Structure, makes to unlock between back support rod 40 and pushing hands bar, pushes down on, by side frames by front support rod 30, back support rod 40th, front foot lever 10, pushing hands bar composition the first quadric chain folding so that pushing hands bar front foot lever 11 moves and draws close upwards, Front support rod 30 is driven by front foot lever 10, first connecting rod 31,32 groups of second connecting rod by the first connecting rod 31 affixed with it simultaneously Become the second quadric chain folding, thus pull after foot lever 20 front foot lever 11 moves and draws close upwards；Continue to push against, pushing hands Bar, in front and back the first quadric chain of support bar composition and rear foot lever 20 are accommodated in the both sides of front foot lever 10 respectively.

A kind of foot lever of baby carriage, including front foot lever 10 and rear foot lever 20, described front foot lever 10 is divided into foot lever of going forward 11 and lower front foot lever 12, front-wheel 13 is installed in lower front foot lever 12 lower end, and the lower end of the upper end of lower front foot lever 12 and foot lever 11 of going forward is cut with scissors Connect, trailing wheel 21 is installed below rear foot lever 20, the upper end of rear foot lever 20 is hinged with the upper end of foot lever 11 of going forward, described foot lever of going forward The upper end of 11 lower end and lower front foot lever 12 is in cooperate down hook-shaped, the lower end of foot lever 11 of going forward and lower front foot lever 12 respectively The jointed shaft 122 of upper end be arranged on down hook-shaped head, the upper end of the lower end of foot lever 11 of going forward and lower front foot lever 12 is passed through to set Put under the forward foot in a step rod lock mechanism of hook-shaped root realize that locking is affixed or release folding.

A kind of baby carriage, including two side frames being symmetrically arranged and be connected to cross bar between side frames, Each side frame includes foot lever and pushing hands bar, and described foot lever is foot lever as above.

The foot lever method for folding of a kind of baby carriage as above, rear foot lever 20 is accommodated in and goes forward under foot lever 11 Side, forward foot in a step rod lock mechanism is discharged by rear foot lever 20, lower front foot lever 12 is folded to the lower section of rear foot lever 20.

A kind of pushing hands bar of baby carriage, including pushing hands bar handle 611, upper pushing hands bar 61, middle pushing hands bar 62 and under push away Hand lever 50, upper pushing hands bar 61 is plugged in middle pushing hands bar 62 and by upper pushing hands rod lock mechanism in the way of can stretching up and down Realize that locking is affixed or release is flexible, the upper end of the lower end of middle pushing hands bar 62 and lower pushing hands bar 50 is hinged and by middle pushing hands lever lock Determine mechanism to realize locking affixed or release folding.

A kind of baby carriage, including two side frames being symmetrically arranged and be connected to cross bar between side frames, Each side frame includes foot lever and pushing hands bar, and described pushing hands bar is pushing hands bar as above.

A kind of pushing hands bar folding method of baby carriage, pressing pushing hands bar handles the upper pushing hands bar telescoping switch on 611 6111, pushing hands rod lock mechanism in release, push down on, upper pushing hands bar 61 is shunk passage to middle pushing hands bar 62；Then make Lower pushing hands bar 50 rotates with respect to support member, and by being linked so that middle pushing hands rod lock mechanism discharges, lower pushing hands bar 50 Unlock with middle pushing hands bar 62, continue to push against, make lower pushing hands bar 50 together with the folding of middle pushing hands bar 62.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any One or more embodiments or example in combine in an appropriate manner.

Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art is in the principle without departing from the present invention and objective In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.All the present invention's Within spirit and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.

Claims

1. a kind of collapsing mechanism of baby carriage, including two side frames being symmetrically arranged and be connected between side frames Cross bar, each side frame includes front foot lever (10), rear foot lever (20) and pushing hands bar, is provided with front-wheel below front foot lever (10) (13), below rear foot lever (20), trailing wheel (21) is installed it is characterised in that the lower end of front support rod (30) and front foot lever (10) Middle part is hinged, and the upper end of front support rod (30) is hinged with the lower end of pushing hands bar, in the upper end of back support rod (40) and pushing hands bar Portion is hinged, and the lower end of back support rod (40) is hinged with the upper end of vertical supporting rod (14), the lower end of vertical supporting rod (14) and rear foot lever (20) upper end is hinged, and the middle part of vertical supporting rod (14) is fixedly connected with the upper end of front foot lever (10) or is integrally formed；First even One end of bar (31) is fixedly connected with the lower end of front support rod (30) or is integrally formed, the other end and second of first connecting rod (31) One end of connecting rod (32) is hinged, and the other end of second connecting rod (32) is hinged with the middle part of rear foot lever (20)；So, front foot lever (10) It is connected front support rod (30) and back support rod (40) and constitute folding first quadric chain, front foot lever between pushing hands bar (10) by being sequentially connected first connecting rod (31) and second connecting rod (32) and constituting the second double leval jib machine and rear foot lever (20) between Structure, the first quadric chain of folded state and rear foot lever (20) are stacked in front foot lever (10) both sides up and down respectively；Wherein, prop up afterwards Realize locking affixed or release folding by the locking mechanism that returns the vehicle to the garage and knock off between the upper end of strut (40) and the middle part of pushing hands bar.

2. a kind of collapsing mechanism of baby carriage according to claim 1 is it is characterised in that the described locking mechanism that returns the vehicle to the garage and knock off Including switch (621) and the side frame locking piece (51) of returning the vehicle to the garage and knock off, the middle part of pushing hands bar is provided with and can accommodate back support rod (40) upper end Groove (52), the upper end of back support rod (40) is inserted in this groove (52) and to pass through jointed shaft hinged with the side wall of this groove, after The upper end of support bar (40) is provided with sticking department (42), and when back support rod (40) rotates with respect to pushing hands bar, sticking department (42) can With activity in groove (52), side frame locking piece (51) is slidably arranged in pushing hands bar, and the switch (621) that returns the vehicle to the garage and knock off passes through steel wire and side Frame locking piece (51) connects；When side frame locking piece (51) stretches into the sticking department (42) with back support rod (40) upper end in groove (52) During cooperation positioning, back support rod (40) can not rotate with respect to pushing hands bar thus locking both realizing is affixed, and the two of such side frame Individual quadric chain is locked cannot activity；When side frame locking piece (51) is return and the sticking department with back support rod (40) upper end (42) when separating, back support rod (40) can rotate with respect to pushing hands bar, and two quadric chains of such side frame can activity Carry out folding.

3. a kind of collapsing mechanism of baby carriage according to claim 1 is it is characterised in that described front foot lever (10) divides For foot lever of going forward (11) and lower front foot lever (12), the lower end of front support rod (30) is hinged with the middle part of foot lever of going forward (11), supports The middle part of montant (14) is fixedly connected with the upper end of foot lever of going forward (11) or is integrally formed, and front-wheel is installed in lower front foot lever (12) lower end (13), the upper end of lower front foot lever (12) is hinged with the lower end of foot lever of going forward (11), the lower end of described foot lever of going forward (11) and lower before The upper end of foot lever (12) is hook-shaped in cooperating down respectively, the upper end of the lower end of foot lever of going forward (11) and lower front foot lever (12) Jointed shaft (122) is arranged on down hook-shaped head, and setting is passed through in the upper end of the lower end of foot lever of going forward (11) and lower front foot lever (12) Under the forward foot in a step rod lock mechanism of hook-shaped root realize that locking is affixed or release folding.

4. a kind of collapsing mechanism of baby carriage according to claim 3 is it is characterised in that described forward foot in a step rod lock machine Structure, including lower forward foot in a step rod lock hook (111) and lower forward foot in a step rod lock portion (121), the middle part of lower forward foot in a step rod lock hook (111) is hinged It is arranged in hook-shaped root under foot lever of going forward (11), one end of lower forward foot in a step rod lock hook (111) is and lower forward foot in a step rod lock portion (121) hook portion (1112) of hook cooperation, one end of lower forward foot in a step rod lock hook (111) is to stick up the release foot lever of going forward (11) outward Portion (1111), lower forward foot in a step rod lock hook (111) is connected with elastic component thus giving hook portion (1112) near lower forward foot in a step rod lock portion (121) trend；Instantly when the rear foot lever (20) that the release portion (1111) of forward foot in a step rod lock hook (111) is folded pushes back, lower before The hook portion (1112) of foot lever lock hook (111) is separated with lower forward foot in a step rod lock portion (121), thus lower front foot lever (12) can be received Folding；When rear foot lever (20) and lower front foot lever (12) launch, the release portion (1111) of lower forward foot in a step rod lock hook (111) outwards sticks up Go out, the hook portion (1112) of lower forward foot in a step rod lock hook (111) is coordinated with lower forward foot in a step rod lock portion (121) hook, thus lower front foot lever (12) affixed with foot lever of going forward (11) locking.

5. a kind of collapsing mechanism of baby carriage according to claim 3 is it is characterised in that described pushing hands bar includes pushing away Hand lever handles (611), upper pushing hands bar (61), middle pushing hands bar (62) and lower pushing hands bar (50), and upper pushing hands bar (61) is with can be upper and lower Flexible mode is plugged in middle pushing hands bar (62) and realizes locking affixed by upper pushing hands rod lock mechanism or discharge flexible, in The upper end of the lower end of pushing hands bar (62) and lower pushing hands bar (50) hinged and by middle pushing hands rod lock mechanism realize locking affixed or Release folding；The upper end of front support rod (30) is hinged with the lower end of lower pushing hands bar (50), the upper end of back support rod (40) with push away The middle part of hand lever (50) is hinged.

6. a kind of collapsing mechanism of baby carriage according to claim 5 is it is characterised in that described upper pushing hands rod lock Mechanism includes pushing hands bar telescoping switch (6111), upper pushing hands lever lock rationed marketing (613), shell fragment (614) and shell fragment set (612), bullet Piece (614) is fixed on the insertion section of pushing hands bar (62) in pushing hands bar (61) insertion, the fixing upper pushing hands of outer warping end of shell fragment (614) Lever lock rationed marketing (613), upper pushing hands lever lock rationed marketing (613) stretch out pushing hands bar (61) and with middle pushing hands bar (62) on lock pin holes Cooperation, shell fragment set (612) is set in shell fragment (614) outward and passes through the outer warping end of slip control shell fragment (614) and include or stick up, bullet Piece set (612) passes through steel wire and is connected with being arranged on pushing hands bar and handling upper pushing hands bar telescoping switch (6111) on (611).

7. a kind of collapsing mechanism of baby carriage according to claim 5 is it is characterised in that described middle pushing hands rod lock Mechanism includes STATEMENT OF FEDERALLY SPONSORED (53) and middle pushing hands rod lock part (54), and STATEMENT OF FEDERALLY SPONSORED (53) is slidably arranged in the middle part of lower pushing hands bar (50) And be connected with the linkage portion (44) being arranged on back support rod (40) upper end, middle pushing hands rod lock part (54) is slidably arranged in lower pushing hands Bar (50) top is simultaneously coordinated with lock hole (622) grafting being arranged on middle pushing hands bar (62) lower end, middle pushing hands rod lock part (54) It is connected with STATEMENT OF FEDERALLY SPONSORED (53) by steel wire, middle pushing hands rod lock part (54) gives the lock on pushing hands bar (62) in insertion by spring Determine the trend of hole (622)；When back support rod (40) rotates with respect to lower pushing hands bar (50), linkage portion (44) drives STATEMENT OF FEDERALLY SPONSORED (53) mobile, STATEMENT OF FEDERALLY SPONSORED (53) drive by steel wire in lock hole in pushing hands rod lock part (54) and middle pushing hands bar (62) (622) locking latch or separation discharge.

8. a kind of collapsing mechanism of baby carriage according to claim 5 is it is characterised in that described cross bar includes：

First cross bar (70), is arranged between foot lever of going forward (11) top of side frames, the two ends of the first cross bar (70) respectively with The cross bar installing arm that foot lever of going forward (11) top of side frames extends out is hinged；Or, it is arranged on the back support rod of side frames (40), between bottom, the cross bar that the two ends of the first cross bar (70) are extended out with back support rod (40) bottom of side frames respectively is pacified Dress arm is hinged；

Second cross bar (80), is arranged between foot lever of going forward (11) bottom of side frames, the two ends of the second cross bar (80) respectively with The cross bar installing arm that foot lever of going forward (11) bottom of side frames extends out is hinged；

3rd cross bar (25), is arranged between the rear foot lever (20) of side frames, the two ends of the 3rd cross bar (25) respectively with side frames The cross bar installing arm that extends out of rear foot lever (20) hinged；

4th cross bar (65), is arranged between the upper pushing hands bar (61) of side frames, the two ends of the 4th cross bar (65) respectively with both sides The cross bar installing arm that the upper pushing hands bar (61) of frame extends out is hinged；Or, be arranged on side frames pushing hands bar handle (611) it Between, it is hinged that the two ends of the 4th cross bar (65) handle the cross bar installing arm that (611) extend out respectively with pushing hands bar；

When side frames are in expansion lock-out state, the first cross bar (70), the second cross bar (80), the 3rd cross bar (25) and the 4th are horizontal Jointed shaft on bar (65) is distributed in different planes；When side frames are in gathering folded state, the first cross bar (70), second Jointed shaft on cross bar (80), the 3rd cross bar (25) and the 4th cross bar (65) is located on same axis.

9. a kind of baby carriage is it is characterised in that include the collapsing mechanism as any one of claim 1 to 8.

10. a kind of method for folding that returns the vehicle to the garage and knock off of baby carriage returns the vehicle to the garage and knock off switch it is characterised in that pulling as claimed in claim 9 (621), discharge the locking mechanism that returns the vehicle to the garage and knock off, make to unlock between back support rod (40) and pushing hands bar, push down on, by side frames The first quadric chain folding being made up of front support rod (30), back support rod (40), front foot lever (10), pushing hands bar is so that push away Move and draw close upwards by front foot lever (11) for hand lever, simultaneously front support rod (30) by the first connecting rod (31) affixed with it drive by The second quadric chain folding that front foot lever (10), first connecting rod (31), second connecting rod (32) form, thus foot lever after pulling (20) front foot lever (11) is moved and is drawn close upwards；Continue to push against, pushing hands bar, in front and back support bar composition the first quadric chain and Foot lever (20) is accommodated in the both sides of front foot lever (10) respectively afterwards.