CN106428181B

CN106428181B - A kind of baby carriage

Info

Publication number: CN106428181B
Application number: CN201610386911.1A
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: 2018-10-12
Anticipated expiration: 2036-06-01
Also published as: CN106428181A

Abstract

The invention discloses a kind of baby carriages, including two side frames and cross bar, side frame includes preceding foot lever, rear foot lever and pushing hands bar, pushing hands bar includes pushing hands bar hand handle, upper pushing hands bar, middle pushing hands bar and lower pushing hands bar, upper pushing hands bar is plugged in middle pushing hands bar and can lock or stretch, and middle pushing hands bar and lower pushing hands bar be hinged to be locked or folding；Preceding foot lever is divided into go forward foot lever and lower preceding foot lever, it goes forward to connect front support rod and back support rod between foot lever and lower pushing hands bar and constitutes folding first four-bar mechanism, it goes forward between foot lever and rear foot lever by being sequentially connected first connecting rod and second connecting rod and constituting the second four-bar mechanism, one end of first connecting rod is fixedly connected or is integrally formed with the lower end of front support rod, and the first four-bar mechanism and the rear foot lever of folded state are stacked in foot lever both sides up and down of going forward respectively.The technical program structure is more reasonable, volume after folding smaller, easy to operate.

Description

A kind of baby carriage

Technical field

The present invention relates to children trolley technical fields, more particularly to a kind of baby carriage that can be folded.

Background technology

Perambulator be it is a kind of providing the convenient tool car designed for baby's outdoor activities, be the favorite stroll traffic of baby Tool, requirement when even more mother goes shopping with baby.With the progress of production and living, the usage scenario of perambulator also It is 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, including push rod and bottom carry the front-wheel support and rear wheel support of wheel, and feature exists It is flexibly connected with the push rod on top by spider in front-wheel support and rear wheel support, after push rod middle part is by collateral support and pedestal End flexible connection, front-wheel support middle part are flexibly connected with pan frontward end, and rear wheel support passes through rear wheel support pull rod and the middle of the base Flexible connection, pedestal are locked by foldable locking device and rear wheel support.

The Chinese patent literature of Publication No. CN201347112 discloses a kind of foldable baby carriage vehicle frame, including preceding branch Frame turns with fore-stock and push rod respectively with the after-poppet of fore-stock rotation connection, the push rod being slidably connected with fore-stock, both ends The head rod of dynamic connection, the seatpost of one end and push rod rotation connection, one end and push rod rotation connection 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 unlock and folding latch hook unlock, push rod is pushed to glide, front end is acted on down by connecting rod, and planar movement occurs, passes through seat Bar, pulling after-poppet, push rod is close forward, completes folding process, when needing to support perambulator, reverse operating above procedure, you can It completes.

Above-mentioned technical proposal realizes the folding of perambulator, but folding process is relatively cumbersome, while the joint of multiple exposures Mechanism and locking structure are easy to damage children and influence safe to use.

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 holder, function pull handle and function bolt, front-wheel support end are fixedly connected with one The lower seat of connection, driver's holder front end are fixedly connected with a connection seat of honour, connect lower seat and are rotatablely connected with the seat of honour is connect, in driver's holder It is installed with bracing wire, has the function of that the accommodating hole of accommodating bolt, function pull handle pass through bracing wire and function in front-wheel support and the connection seat of honour Bolt connects, and function bolt is equipped with spring, and function bolt can partly enter front-wheel under function pull handle, spring and bracing wire effect The accommodating hole of holder partly coordinates with the accommodating hole for connecting the seat of honour, or be detached from the accommodating hole of front-wheel support, all with connect The accommodating hole at the seat of honour coordinates.The technical solution optimizes the position of the switch by bracing wire, improves safety, but folding process according to It is old relatively cumbersome.

The Chinese patent literature of Publication No. CN103507846A discloses a kind of children trolley, and stroller frame includes opposite The left side brackets and right side holder of title, the link being connected between left side brackets and right side holder, left side brackets include left front Frame, left back frame, left side bar, front and the left connecting rod of left front frame rotation connection and left lever and the left side of the rotation connection of left back frame The posterior rotation of the left push-rod frame of the top rotation connection of bar, left lever and left connecting rod connects, the lower part of left push-rod frame and Zola The top of bar is rotatablely connected, and the top of left front frame, the top of left back frame rotate with the component of lower part three of left side bar and connect, right Side stand is equally arranged；When stroller frame is in the deployed down, angle α, the angle model of angle α are formed between side arm and side lever Enclose is 165 ° -195 °.There are still following problems for the technical solution：1, upon deployment, side arm, side lever and push-rod frame are launched into one Straight line, locking mechanism mutually squeeze to lock car body by push-rod frame and side lever, will be by pushing push-rod frame rotation in folding It forms lever and carrys out folding, not only folding is inconvenient, needs firmly larger, and force localization, is easily damaged push-rod frame；2, it pushes away Bridge is flexible using two sections, and still length is longer after contraction, side arm can not folding length it is longer, cause after vehicle frame folding still body in this way Product is larger；3, make vehicle frame volume smaller if you need to collapse rear wheel together when folding, then the folding after-frame that needs first to squat down is by rear wheel After packing up, then folding is carried out to two side stands, it is inconvenient for operation, process is unreasonable, using skill is required excessively high；4, left and right two After side stand doubling is collapsed, not to being easy to scatter, collection is taken all inconvenient for position of such as taking；5, locking mechanism and multiple joints Mechanism is exposed, is easy to damage children and influence safe to use.

The patent document of Publication No. CN204222933U discloses a kind of foldable baby cart, left and right sides branch 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, there is a problem of same.

The patent document of Publication No. CN204415487U discloses a kind of frame for baby cart convenient for folding storage, including pushes 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 It is rotatablely connected to form the first hinge joint with the lower end of push rod；The lower end that the upper end of after-poppet is also rotationally connected with push rod forms second Hinge joint, and the second hinge joint is located at the rear of the first hinge joint；The front end of subbase is connected with front wheel carrier；The lower end of fore-stock turns The dynamic front for being connected to subbase forms third hinge joint；The rear portion that the lower end of after-poppet is rotationally connected with subbase forms the 4th Hinge joint；Rear wheel frame is rotationally connected at the 4th hinge joint at subbase rear portion；The fore-stock is equipped with the first connector, described Rear wheel frame is equipped with the second connector, and connecting rod is equipped between two connectors；Any one is equipped with locking device among four hinge joints.It should Scheme is using chassis holder structure, and in order to ensure vehicle frame stability, subbase volume is big and can not carry out folding, causes in this way Vehicle frame volume after folding is still larger, although wherein also illustrating that push rod is scalable or folding, also gives simple Bending structure, but even if it is push rod bending Rear frame volume is still larger.

Invention content

In order to solve the above technical problems, the object of the present invention is to provide a kind of baby carriage, structure is more reasonable, Volume after folding smaller, it is easy to operate.

To achieve the above object, present invention employs technical solutions below：

A kind of baby carriage, including two side frames symmetrically arranged on the left and the right and the cross bar that is connected between side frames, Each side frame includes preceding foot lever (10), rear foot lever (20) and pushing hands bar, and front-wheel (13), rear foot lever are equipped with below preceding foot lever (10) (20) lower section trailing wheel (21) is installed, which is characterized in that the pushing hands bar include pushing hands bar hand handle (611), upper pushing hands bar (61), Middle pushing hands bar (62) and lower pushing hands bar (50), upper pushing hands bar (61) are plugged in middle pushing hands bar (62) in a manner of it can stretch up and down In and by upper pushing hands rod lock mechanism realize that locking is affixed or release is flexible, the lower end of middle pushing hands bar (62) and lower pushing hands bar (50) upper end is hinged and affixed by the realization locking of middle pushing hands rod lock mechanism or discharges folding；The preceding foot lever (10) is divided into Go forward foot lever (11) and lower preceding foot lever (12), lower preceding foot lever (12) lower end installation front-wheel (13), the upper end of lower preceding foot lever (12) with Go forward foot lever (11) lower end it is hinged, the middle part of the lower end of front support rod (30) and foot lever (11) of going forward is hinged, front support rod (30) upper end and the lower end of lower pushing hands bar (50) are hinged, and the upper end of back support rod (40) and the middle part of lower pushing hands bar (50) are cut with scissors It connects, the lower end of back support rod (40) is hinged with the upper end of vertical supporting rod (14), lower end and the rear foot lever (20) of vertical supporting rod (14) Upper end it is hinged, the middle part of vertical supporting rod (14) is fixedly connected or is integrally formed with the upper end of foot lever of going forward (11)；First connecting rod (31) one end is fixedly connected or is integrally formed with the lower end of front support rod (30), and the other end of first connecting rod (31) and second connects One end of bar (32) is hinged, and the other end of second connecting rod (32) is hinged with the middle part of rear foot lever (20)；In this way, foot lever of going forward (11) Front support rod (30) and back support rod (40) are connected between lower pushing hands bar (50) and constitute folding first four-bar mechanism, It goes 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 second Four-bar mechanism, the first four-bar mechanism of folded state and rear foot lever (20) are stacked in foot lever of going forward (11) up and down two respectively Side.

Preferably, the cross bar includes：

First crossbar (70) is arranged between foot lever of going forward (11) top of side frames, the both ends point of first crossbar (70) The cross bar installing arm not extended out with the foot lever of going forward of side frames (11) top is hinged；Alternatively, the rear branch in side frames is arranged Between strut (40) lower part, cross that the both ends of first crossbar (70) extend out with the back support rod of side frames (40) lower part respectively Bar installing arm is hinged；

Second crossbar (80) is arranged between foot lever of going forward (11) lower part of side frames, the both ends point of second crossbar (80) The cross bar installing arm not extended out with the foot lever of going forward of side frames (11) lower part is hinged；

Third cross bar (25) is arranged between the rear foot lever (20) of side frames, and the both ends of third 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 both 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；Alternatively, the pushing hands bar hand handle in side frames is arranged (611) between, the cross bar installing arm that the both ends of the 4th cross bar (65) extend out with pushing hands bar hand handle (611) respectively is hinged；

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

Preferably, seat bar (41) is mounted on back support rod by the first connector (411) and the second connector (412) (40) and on lower pushing hands bar (50), the first connector (411) is hinged with back support rod (40) and is fixedly connected with seat bar (41), Second connector (412) is mounted on lower pushing hands bar (50), and seat bar (41) is shelved on the second connector (412) or with the Two connectors (412) sleeve is slidably connected.

Preferably, the upper pushing hands rod lock mechanism includes upper pushing hands bar telescoping switch (6111), upper pushing hands rod lock (613), shrapnel (614) and shrapnel set (615) are sold, shrapnel (614) is fixed on pushing hands bar (62) during pushing hands bar (61) is inserted into Insertion section, the outer warping end of shrapnel (614), which is fixed, goes up pushing hands lever lock rationed marketing (613), pushing hands in upper pushing hands lever lock rationed marketing (613) stretching Bar (61) simultaneously coordinates with the lock pin holes on middle pushing hands bar (62), and shrapnel set (615) is set in shrapnel (614) outside and passes through sliding The outer warping end of control shrapnel (614) is included in or sticks up, and shrapnel set (615) is by steel wire and in pushing hands bar hand handle (611) Upper pushing hands bar telescoping switch (6111) connection.

Preferably, passing through locking mechanism reality of returning the vehicle to the garage and knock off between the upper end of back support rod (40) and the middle part of lower pushing hands bar (50) Now lock affixed or release folding；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 The middle part of bar (50), which is equipped with, can accommodate the groove (52) of back support rod (40) upper end, and it is recessed that this is inserted into the upper end of back support rod (40) In slot (52) and hinged by articulated shaft with the side wall of the groove, the upper end of back support rod (40) is equipped with sticking department (42), when after When supporting rod (40) is rotated relative to lower pushing hands bar (50), sticking department (42) can be movable in groove (52), side frame locking piece (51) it is slidably arranged in lower pushing hands bar (50), the switch (621) that returns the vehicle to the garage and knock off is connect by steel wire with side frame locking piece (51)；Work as side frame When sticking department (42) cooperation that locking piece (51) stretches into groove (52) with back support rod (40) upper end positions, back support rod (40) It cannot rotate to realize that the two locking is affixed relative to lower pushing hands bar (50), two four-bar mechanisms of such side frame are locked It can not activity；When side frame locking piece (51) is retracted and is detached with the sticking department (42) of back support rod (40) upper end, back support rod (40) it can be rotated relative to lower pushing hands bar (50), two four-bar mechanisms of such side frame can activity progress folding.

Preferably, the 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 the linkage portion (44) with setting in back support rod (40) upper end is connect, Middle pushing hands rod lock part (54) is slidably arranged in lower pushing hands bar (50) top and the locking with setting in middle pushing hands bar (62) lower end Hole (622) is mating, and middle pushing hands rod lock part (54) is connect by steel wire with STATEMENT OF FEDERALLY SPONSORED (53), middle pushing hands rod lock part (54) The trend of the lock hole (622) in being inserted on pushing hands bar (62) is assigned by spring；When back support rod (40) is relative to lower pushing hands When bar (50) rotates, linkage portion (44) drives STATEMENT OF FEDERALLY SPONSORED (53) mobile, pushing hands rod lock during STATEMENT OF FEDERALLY SPONSORED (53) is driven by steel wire Part (54) on middle pushing hands bar (62) lock hole (622) locking latch or detach release.

Preferably, under the lower end of the foot lever of going forward (11) and the upper end of lower preceding foot lever (12) are in mutually matched respectively Hook-shaped, hook-shaped head is arranged under in the articulated shaft (122) of the upper end of the lower end of foot lever of going forward (11) and lower preceding foot lever (12), on The lower end of preceding foot lever (11) and the upper end of lower preceding foot lever (12) are real by the front foot rod lock mechanism that hook-shaped root is arranged under Now lock affixed or release folding.

Further preferably, the front foot rod lock mechanism, including lower front foot rod lock hook (111) and lower front foot rod lock portion (121), the middle part of lower front foot rod lock hook (111) is hingedly arranged in hook-shaped root under foot lever of going forward (11), lower preceding foot lever One end of lock hook (111) is the hook portion (1112) that cooperation is hooked with lower front foot rod lock portion (121), lower front foot rod lock hook (111) one end is to stick up the release portion (1111) of foot lever of going forward (11) outside, and lower front foot rod lock hook (111) is connected with elastic component To assign trend of the hook portion (1112) close to lower front foot rod lock portion (121)；Instantly the release portion of front foot rod lock hook (111) (1111) when the rear foot lever (20) being folded pushes back, hook portion (1112) and the lower front foot rod lock of lower front foot rod lock hook (111) Portion (121) detaches, to which lower preceding foot lever (12) can be with folding；When rear foot lever (20) and lower preceding foot lever (12) are unfolded, lower front foot The release portion (1111) of rod lock hook (111) sticks up outward, hook portion (1112) and the lower preceding foot lever of lower front foot rod lock hook (111) Sticking department (121) hooks cooperation, to which lower preceding foot lever (12) and foot lever of going forward (11) locking are affixed.

Preferably, being provided with side frame doubling locking mechanism on the 4th cross bar, which includes sliding The dynamic doubling locking switch (651) and doubling locking pin (6511) being arranged on the 4th cross bar (65), doubling locking pin (6511) One end connect with doubling locking switch (651), the other end of doubling locking pin (6511) stretches out the end of the 4th cross bar (65) And, cross bar installation mating affixed to lock the two with lock hole (6121) of the setting in cross bar installing arm (612) Arm (612) is fixed on pushing hands bar (61), the end set of cross bar installing arm (612) have correspond to respectively side frame doubled state and Two lock holes (6121) of side frame unfolded state.

It front and back can be overturn preferably, a ceiling frame (652) is sleeved on the 4th cross bar (65), and pass through bit-stopping structure Allow it to be laid flat to use for sunshade.

The present invention is as a result of above technical solution, and upon deployment, pushing hands bar is in angle with preceding foot lever, rear foot lever It is arranged and realizes that linkage folds by two four-bar mechanisms between three, in this way as long as the locking for releasing four-bar mechanism It can easily realize folding, convenient folding is laborsaving, and each component service life is long；Pushing hands bar is arranged to three sections up and down, by front foot Bar is arranged to two sections, and gathering is separately folded in the both sides up and down for foot lever of going forward in back support rod and rear foot lever, so that It the similar length of each rod piece and is fitted to each other, foldable structure is more reasonable so that the vehicle frame volume smaller after folding.Also, it ties Structure is simple, and the stability of product is substantially increased while reducing component and cost.

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

A kind of baby carriage, including two side frames symmetrically arranged on the left and the right and the cross bar that is connected between side frames, Each side frame includes preceding foot lever, rear foot lever and pushing hands bar, and front-wheel is equipped with below preceding foot lever, trailing wheel is equipped with below rear foot lever.

Pushing hands bar includes pushing hands bar hand handle, upper pushing hands bar, middle pushing hands bar and lower pushing hands bar, and upper pushing hands bar that can stretch up and down The mode of contracting is plugged in middle pushing hands bar and realizes that locking is affixed or release is flexible by upper pushing hands rod lock mechanism, middle pushing hands bar Lower end and lower pushing hands bar upper end it is hinged and realize that locking is affixed or release folding by middle pushing hands rod lock mechanism.

In the prior art, the pushing hands bar two-stage structure that generally use is stretched up and down, and the pushing hands bar of baby carriage Operating altitude range is usually specific, thus determines that the length range of pushing hands bar is fixed, using two-part pushing hands Bar, still length is longer after contraction, so that the vehicle frame volume after folding is still larger.Three sections of stretching structures are such as used, then are existed Locking mechanism is complicated and can not be locked or be discharged by the single switch of neighbouring hand handle in higher position, not only not square in this way Just it uses, and is easy to form security risk.And in the present invention, by shrinking between upper pushing hands bar and middle pushing hands bar, middle pushing hands By folding between bar and lower pushing hands bar, such three stage structure control stroke is short and simple in structure, and can be with support Two four-bar mechanisms of side frame form linkage, can simplify locking mechanism, reduce exposed switch, improve operation convenience and can By property.

Preceding foot lever is divided into go forward foot lever and lower preceding foot lever, and front-wheel is installed in lower preceding foot lever lower end, the upper end of lower preceding foot lever with it is upper The lower end of preceding foot lever is hinged, and the middle part of the lower end of front support rod and foot lever of going forward is hinged, the upper end of front support rod and lower pushing hands bar Lower end it is hinged, the upper end of back support rod and the middle part of lower pushing hands bar are hinged, the lower end of back support rod and the upper end of vertical supporting rod Hinged, the lower end of vertical supporting rod and the upper end of rear foot lever are hinged, and the middle part of vertical supporting rod is fixedly connected with the upper end for foot lever of going forward Or it is integrally formed；One end of first connecting rod is fixedly connected or is integrally formed with the lower end of front support rod, the other end of first connecting rod Hinged with one end of second connecting rod, the other end of second connecting rod and the middle part of rear foot lever are hinged；In this way, go forward foot lever and lower pushing hands Front support rod and back support rod are connected between bar and constitutes folding first four-bar mechanism, are gone forward between foot lever and rear foot lever By be sequentially connected first connecting rod and second connecting rod and constitute the second four-bar mechanism, the first four-bar mechanism of folded state with Foot lever is stacked in foot lever both sides up and down of going forward respectively afterwards.

Upon deployment, pushing hands bar and preceding foot lever, rear foot lever are in pass through two between angle setting and three to the present invention Four-bar mechanism realizes that linkage folds, as long as folding, folding side are easily realized in the locking for releasing four-bar mechanism in this way Just laborsaving, each component service life is long；Pushing hands bar is arranged to three sections up and down, preceding foot lever is arranged to two sections, is propped up by after Gathering is separately folded in the both sides up and down for foot lever of going forward in strut and rear foot lever, so that the similar length of each rod piece and matches each other It closes, foldable structure is more reasonable so that the vehicle frame volume smaller after folding.

In order to achieve the effect that linkage, baby carriage while the first four-bar mechanism folding by passing through front support rod It is fixedly connected with foot lever after driving the second four-bar mechanism folding between first connecting rod, can join as long as one acts to reach The purpose of the whole baby carriage of dynamic folding, after the completion of vehicle complete folding, the first four-bar mechanism and rear foot lever paste respectively The both sides of foot lever before leaning against, being described as both sides up and down is not allowed because baby carriage can arbitrarily overturn placement after folding Easily distinguish orientation, and baby carriage in the deployed state when three-dimensional state stablize, preceding foot lever is in the horizontal state of tilting, because The both sides up and down of foot lever before this first four-bar mechanism and rear foot lever stick on respectively.During folding, the first double leval jib machine Structure and rear foot lever are reclined respectively to the both sides up and down of preceding foot lever, and side frames can be by being rotatably assorted in opposite directions with cross bar to varus Folding further reduces the volume size after baby carriage folds, is convenient for carrying.

Wherein, between the upper end of back support rod and the middle part of lower pushing hands bar by return the vehicle to the garage and knock off locking mechanism realize locking it is affixed or Discharge folding.Although the locking mechanism that returns the vehicle to the garage and knock off can also be arranged the first four-bar mechanism, the second four-bar mechanism other are hinged Position, it is preferred that being arranged between back support rod and lower pushing hands bar, tool has the advantage that in this way：1, after seat is typically mounted at Between supporting rod 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 better locking effect；2, exist The middle part of lower pushing hands bar can be used for hiding with enough spaces is arranged the locking mechanism that returns the vehicle to the garage and knock off, and not only can avoid joint Security risk is caused with locking mechanism exposure, forward easily played by children, and more designs are provided to the locking mechanism that returns the vehicle to the garage and knock off Selection, can design the more reliable and more stable locking mechanism that returns the vehicle to the garage and knock off；3, the locking switch that returns the vehicle to the garage and knock off is generally located on pushing hands bar, in this way Design is also convenient for and other lockings on pushing hands bar not only so that the locking mechanism that returns the vehicle to the garage and knock off is simple in structure, easy to use and reliable Mechanism links, to reduce exposed switch.

Go forward foot lever lower end and lower preceding foot lever upper end respectively be in it is mutually matched under it is hook-shaped, the lower end for foot lever of going forward and Hook-shaped head is arranged under in the articulated shaft of the upper end of foot lever before lower, and the upper end of the lower end for foot lever of going forward and lower preceding foot lever is by setting The front foot rod lock mechanism realization for setting hook-shaped root under locks affixed or release folding.It goes forward foot lever and lower preceding foot lever uses Under hook-shaped articulated structure, not only there is preferable support switching performance, but also the front and back wheel after folding is had more rationally Dislocation arrangement space.

Cross bar includes：

First crossbar is arranged between the foot lever top of going forward of side frames, the both ends of first crossbar respectively with side frames The cross bar installing arm that foot lever top extends out of going forward is hinged；Alternatively, being arranged between the back support rod lower part of side frames, first The cross bar installing arm that the both ends of cross bar extend out with the back support rod lower part of side frames respectively is hinged；It may insure to support in this way Montant and back support rod are hinged securely to ensure the first four-bar mechanism stabilized structure.The present embodiment is preferably provided at side frames Back support rod lower part between, in this way when seat bar is mounted on back support rod and lower pushing hands bar, be mounted on both sides seat bar On seat webbing and first crossbar the upper and lower ends of the back support rod of side frames are all connected respectively, further ensure Stable structure.

Second crossbar is arranged between the foot lever lower part of going forward of side frames, the both ends of second crossbar respectively with side frames The cross bar installing arm that foot lever lower part extends out of going forward is hinged；It may insure stable connection between the preceding foot lever of side frames in this way, Second crossbar plays foot-operated effect simultaneously.

Third cross bar is arranged between the rear foot lever of side frames, the both ends of third cross bar respectively with the rear foot lever of side frames The cross bar installing arm to extend out is hinged；It may insure stable connection between the rear foot lever of side frames in this way.

4th cross bar is arranged between the upper pushing hands bar of side frames, and the both ends of the 4th cross bar are above pushed away with side frames respectively The cross bar installing arm that hand lever extends out is hinged；Alternatively, being arranged between the pushing hands bar hand handle of side frames, the both ends of the 4th cross bar The cross bar installing arm to extend out respectively with pushing hands bar hand handle is hinged.It may insure to connect surely between the pushing hands bar of side frames in this way Gu.

When side frames are in expansion lock-out state, the hinge on first crossbar, second crossbar, third cross bar and the 4th cross bar Spindle is distributed in different planes；When side frames be in collapse folded state when, first crossbar, second crossbar, third cross bar and Articulated shaft on 4th cross bar is located on same axis.In this way, when side frame is collapsed and folded, it can be along same axis to side frames Carry out opposite fold so that the vehicle frame volume smaller after folding；And when side frame is unfolded to lock, and may insure stable structure, Cart is avoided to generate loosening or folding in use.

First crossbar is mounted on and goes forward foot lever close to the position of rear foot lever, and second crossbar is arranged close to the portion of lower preceding foot lever Position.Selection reason in this way is in a limited space, can fix both sides far from first crossbar and second crossbar as possible Foot lever aspect of going forward obtains the arm of force of bigger, i.e., can stablize the foot lever of going forward of both sides with smaller power.Meanwhile first crossbar is pacified Mounted in going forward, foot lever is provided with vertical supporting rod close to the position of rear foot lever, is the hinged position of multiple components, can be carried at this The integral rigidity of high joint part, to improve vehicle rigidity.

Cross bar is equipped with four groups, and two groups are mounted between two pairs of foot levers of going forward, one group be mounted on two pairs after between foot lever, it is another Group is mounted between pushing hands bar, and the reason of selection in this way is, although three groups of cross bars theoretically fix the side frame of both sides enough, It is that side frame is equipped with multiple movable parts, the point that each hinged or axis connects is not enough to keep all moving components all in same Plane, therefore, four groups of cross bars of setting are necessary.And baby carriage in use, bear strength maximum Be exactly forward and backward foot lever, the firm rigidity for directly affecting whole trolley as the forward and backward foot lever of weighing component.

The mounting structure of above-mentioned each cross bar may refer to the patent of Publication No. CN103507846A and CN204222933U Document, the present embodiment are illustrated by taking third cross bar as an example, and the cross bar installing arm for installing and folding is equipped on rear foot lever, Cross bar installing arm is divided into the fixed tail portion of rear foot lever and the head far from rear foot lever, is installed on the head of cross bar installing arm hinged Spindle is similarly being equipped with the cross bar installing arm storage for storing cross bar installing arm when side frame opposite direction turns down on third cross bar Slot is arranged with the cross bar mounting hole of coordination hinge axis installation in the upper and lower of cross bar installing arm accommodating groove.Cross bar installing arm Shape and structure can be designed according to the needs of component evacuation and structural support when folding.

The structure in the prior art used in Folding trolley may be used in the mounting structure of seat and seat webbing, The present invention only provides a kind of preferred embodiment for explanation：After seat bar is mounted on by the first connector and the second connector On supporting rod and lower pushing hands bar, the first connector is hinged with back support rod and is fixedly connected with seat bar, the installation of the second connector 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 is stably connected with entirely through the flexible material on the pushing hands bar being arranged with car body holding.The load-bearing of seat bar is by the first connection Part, the second connector and flexible material shared.Wherein flexible material can select the form of cloth set.

The structure in the prior art used in Folding trolley may be used in above-mentioned upper pushing hands rod lock mechanism, and The present invention uses a kind of preferred embodiment, is described as follows：

Upper pushing hands rod lock mechanism includes upper pushing hands bar telescoping switch, upper pushing hands lever lock rationed marketing, shrapnel and shrapnel set, shrapnel It is fixed on the insertion section of pushing hands bar during pushing hands bar is inserted into, the outer warping end of shrapnel fixes upper pushing hands lever lock rationed marketing, upper pushing hands lever lock Rationed marketing is stretched out upper pushing hands bar and is coordinated with the lock pin holes on middle pushing hands bar, and shrapnel set is set in outside shrapnel and is controlled by sliding The outer warping end of shrapnel is included in or sticks up, and shrapnel set is connected by steel wire and the upper pushing hands bar telescoping switch in pushing hands bar hand handle It connects.When pressing pushing hands bar telescoping switch, steel wire pulls the sliding of shrapnel set that the outer warping end of shrapnel is included in shrapnel set so that shrapnel Therefrom abjection unlocks state in the lock pin holes on pushing hands bar for upper pushing hands lever lock rationed marketing on outer warping end, goes up pushing hands bar in this way It can be moved up and down in middle pushing hands bar and realize that pushing hands bar is flexible；Pushing hands bar telescoping switch, upper pushing hands bar movement are pressed in release After in place, shrapnel resets under own resilient effect, and the outer warping end of shrapnel sticks up shrapnel and covers so that above pushing away on shrapnel outer warping end Position locking is realized in lock pin holes during hand lever locking pin is inserted on pushing hands bar.Multiple locking pins are set on middle pushing hands bar Hole can adjust the height of pushing hands bar with user-friendly in this way.

The structure in the prior art used in Folding trolley may be used in the above-mentioned locking mechanism that returns the vehicle to the garage and knock off, such as public The number of opening is the structure disclosed in the patent document of CN201257998Y, and the present invention uses 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, which is equipped with, can accommodate rear support The upper end of the groove of bar upper end, back support rod is inserted into the groove and is hinged by articulated shaft with the side wall of the groove, rear support The upper end of bar is equipped with sticking department, and when back support rod is rotated relative 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 on middle pushing hands bar is connected by steel wire and side frame locking piece It connects；When side frame locking piece, which stretches into, coordinates positioning with the sticking department of back support rod upper end in groove, back support rod is pushed away relative under Hand lever cannot rotate to realize that the two locking is affixed, and two four-bar mechanisms of such side frame are locked can not activity；Work as side Frame locking piece retract and with the lock part of back support rod upper end from when, back support rod can be rotated relative to lower pushing hands bar, this Two four-bar mechanisms of sample side frame can activity progress folding.In this way, the connection row of not only return the vehicle to the garage and knock off switch and side frame locking piece Journey is short, simple in structure, 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 not easy by child getting in contact, safer.

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

The structure in the prior art used in Folding trolley may be used in pushing hands rod lock mechanism among the above, and The present invention uses 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 connect with the linkage portion for being arranged in back support rod upper end, and middle pushing hands rod lock part is slidably arranged in lower pushing hands bar top simultaneously Mating with lock hole in middle pushing hands bar lower end is arranged, middle pushing hands rod lock part is connect by steel wire with STATEMENT OF FEDERALLY SPONSORED, in push away Hand lever locking piece assigns the trend of the lock hole in insertion on pushing hands bar by spring；When back support rod turns relative to lower pushing hands bar When dynamic, linkage portion drives STATEMENT OF FEDERALLY SPONSORED movement, pushing hands rod lock part and the locking on middle pushing hands bar during STATEMENT OF FEDERALLY SPONSORED is driven by steel wire Hole locking latch or separation release.In this way, the locking of middle pushing hands bar folding and release and the folding of four-bar mechanism are carried out In addition linkage need not increase exposed switch come pushing hands bar folding in controlling, reduce cost, improve safety, and lead to Cross pushing hands rod lock part in coordinate design, STATEMENT OF FEDERALLY SPONSORED and linkage portion matching relationship, can be in four-bar mechanism folding to suitable The folding of middle pushing hands bar is restarted in position, more convenient to use reasonable.

The cooperation of linkage portion and STATEMENT OF FEDERALLY SPONSORED can be diversified forms, as long as can pulling steel be converted to for the rotation of linkage portion Line.In the present invention preferably, linkage portion is hooked by the STATEMENT OF FEDERALLY SPONSORED of hanging groove and hook form and is connected, simple in structure, cooperation Reliably, small.In other embodiments, the two can also be coordinated by way of elongated groove/opening and pin, can also be The wire loop of steel wire is directly articulated in linkage portion.

Because the moving direction of middle pushing hands rod lock part and the moving direction of STATEMENT OF FEDERALLY SPONSORED are inconsistent, middle pushing hands rod lock Part needs to connect by turning member with STATEMENT OF FEDERALLY SPONSORED, which can be the pulley or pillar to detour for steel wire.In this hair In bright preferably, a lever piece is hingedly set inside the upper end of lower pushing hands bar, and one end of lever piece passes through elongated groove/opening, pin It is flexibly connected with middle pushing hands rod lock part, the other end of lever piece is connect by steel wire with STATEMENT OF FEDERALLY SPONSORED, simple in structure in this way, is adjusted It is convenient.

The mating structure of middle pushing hands rod lock part and the lock hole on middle pushing hands bar can refer to Publication No. Lock gear structure in the patent document of CN204415487U.In the present invention preferably, middle pushing hands rod lock part is a pin, The articulated shaft of the pin and middle pushing hands bar and lower pushing hands bar is not coaxial, simple in structure in this way, small, and locking is reliable.

Above-mentioned front foot rod lock mechanism, including lower front foot rod lock hook and lower front foot rod lock portion, lower front foot rod lock hook Middle part be hingedly arranged in hook-shaped root under foot lever of going forward, one end of lower front foot rod lock hook is and lower front foot rod lock portion The hook portion of cooperation is hooked, one end of lower front foot rod lock hook is to stick up the release portion to go forward outside foot lever, and lower front foot rod lock hook connects Elastic component is connected to assign trend of the hook portion close to lower front foot rod lock portion；Instantly the release portion of front foot rod lock hook is folded Rear foot lever when pushing back, the hook portion of lower front foot rod lock hook is with lower front foot rod lock part to which lower preceding foot lever can be with folding； When rear foot lever and lower preceding foot lever expansion, the release portion of lower front foot rod lock hook sticks up outward, the hook portion of lower front foot rod lock hook It hooks and coordinates with lower front foot rod lock portion, to which lower preceding foot lever and foot lever locking of going forward are affixed.In this way, will using locking hook forms Being folded with after side frame folding for lower preceding foot lever, more meets use habit, and pass through interoperation so that folding operation Simpler convenience.

In order to solve the problem of " because position of taking is not to being easy to scatter after left and right sides holder doubling gathering ", the 4th Side frame doubling locking mechanism, including the doubling locking switch being slidably arranged on the 4th cross bar and doubling locking are provided on cross bar Pin, one end of doubling locking pin are connect with doubling locking switch, and the other end of doubling locking pin stretches out the end of the 4th cross bar simultaneously Mating affixed to lock the two with the lock hole that is arranged in cross bar installing arm, cross bar installing arm is fixed on pushing hands On bar, the end set of cross bar installing arm has two lock holes for corresponding to side frame doubled state and side frame unfolded state respectively.This Sample can realize locking in side frame doubled state and side frame unfolded state, need operation doubling locking switch that could unlock receipts Folding.

Ceiling frame be sleeved on the 4th cross bar can front and back overturning, and allow it to be laid flat by bit-stopping structure for sunshade to make With.

Above-mentioned baby carriage use process is as follows：

Baby carriage is when being unfolded use state, upper pushing hands rod lock mechanism, middle pushing hands rod lock mechanism, locking of returning the vehicle to the garage and knock off Mechanism, front foot rod lock mechanism and side frame doubling locking mechanism are in the affixed state of locking, and entire vehicle frame support is firm.It is accurate It is 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 upper in pushing hands bar hand handle Pushing hands bar telescoping switch, pushing hands rod lock mechanism in release, pushes down on, and upper pushing hands bar is shunk passage to middle pushing hands bar bottom Portion；Then the switch that returns the vehicle to the garage and knock off is pulled, the locking mechanism that returns the vehicle to the garage and knock off is discharged, makes to unlock between back support rod and lower pushing hands bar, push down on Pressure, the first four-bar mechanism folding of side frames being made of front support rod, back support rod, foot lever of going forward, lower pushing hands bar makes Pushing hands bar must be descended, and preceding foot lever is moved and is drawn close upwards, while front support rod is driven by the first connecting rod affixed with it by upper front foot Second four-bar mechanism folding of bar, first connecting rod, second connecting rod composition, to which preceding foot lever is moved and leaned on foot lever upwards after pulling Hold together；After back support rod turns to certain position, by be linked so that in the release of pushing hands rod lock mechanism, lower pushing hands bar with Middle pushing hands bar unlocks, and continues to push against, make lower pushing hands bar upwards before foot lever movement while folding in pushing hands bar.Pushing hands Bar, front and back support bar group at the first four-bar mechanism and rear foot lever be accommodated in the both sides of foot lever of going forward respectively, rear foot lever will before Foot lever locking mechanism discharges.Front-wheel is adjusted to behind front position, lower preceding foot lever is folded to below rear foot lever, go forward foot lever and Foot lever is hinged hook-shaped design under cooperation position so that the dislocation arrangement of front and back wheel is more reasonable before lower.Side frame doubling locking is pulled to open It closes, side frames doubling locking is released, by side frames along the both sides of first crossbar, second crossbar, third cross bar and the 4th cross bar Hinge axes turn down, and after side frames doubling in place, side frame doubling locking mechanism locks side frames, completes entire vehicle frame folding.

Description of the drawings

Fig. 1 is the structural schematic diagram of the present invention；

Fig. 2 is one of the 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 schematic diagram of upper pushing hands rod lock mechanism；

Figure 14 is the structural schematic diagram of locking mechanism of returning the vehicle to the garage and knock off；

Figure 15 is one of the structural schematic diagram of middle pushing hands rod lock mechanism；

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

Figure 17 is the structural schematic diagram of front foot rod lock mechanism；

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

Specific implementation mode

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " clockwise ", " inverse The orientation or positional relationship of the instructions such as hour hands " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally Invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with specific side Position construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two It is a or more than two, unless otherwise restricted clearly.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine Tool connects, and can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two members Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be Concrete meaning in bright.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower" It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " 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 symmetrically arranged on the left and the right and it is connected to two Cross bar between side frame, each side frame include preceding foot lever 10, rear foot lever 20 and pushing hands bar, and 10 lower section of preceding foot lever is equipped with front-wheel 13,20 lower section of rear foot lever is equipped with trailing wheel 21.

As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, pushing hands bar includes pushing hands bar hand handle 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 a manner of it can stretch up and down in middle pushing hands bar 62 and by upper pushing hands lever lock 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 is pushed away in passing through Hand lever locking mechanism, which is realized, locks affixed or release folding.

As shown in Figures 1 to 6, preceding foot lever 10 divides for foot lever 11 and the lower preceding foot lever 12 of going forward, lower 12 lower end of preceding foot lever installation The lower end of front-wheel 13, the upper end of lower preceding foot lever 12 and foot lever 11 of going forward is hinged, 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 and the lower end of lower pushing hands bar 50 are hinged, the upper end of back support rod 40 and lower pushing hands bar 50 Middle part it is 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 it is hinged, the middle part of vertical supporting rod 14 is fixedly connected or is integrally formed with the upper end for foot lever 11 of going forward；First connecting rod 31 One end is fixedly connected or is integrally formed with the lower end of front support rod 30, one end of the other end and second connecting rod 32 of first connecting rod 31 Hinged, the other end of second connecting rod 32 and the middle part of rear foot lever 20 are hinged；In this way, going forward to connect between foot lever 11 and lower pushing hands bar 50 It connects front support rod 30 and back support rod 40 and constitutes folding first four-bar mechanism, 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 four-bar mechanism, the first double leval jib machine of folded state Structure is stacked in about 11 both sides of foot lever of going forward respectively with rear foot lever 20.

Wherein, realize that locking is solid by the locking mechanism that returns the vehicle to the garage and knock off between the upper end of back support rod 40 and the middle part of lower pushing hands bar 50 Connect or discharge folding.Although the locking mechanism that returns the vehicle to the garage and knock off can also be arranged the first four-bar mechanism, the second four-bar mechanism other Articulated position, it is preferred that being arranged between back support rod 40 and lower pushing hands bar 50, tool has the advantage that in this way：1, seat is general 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, and direct locking has preferably locking Effect；2, it can be used for hiding with enough spaces at the middle part of lower pushing hands bar 50 and the locking mechanism that returns the vehicle to the garage and knock off be set, so not only Security risk can be caused to avoid joint and locking mechanism exposure, forward easily played by children, and be carried to the locking mechanism that returns the vehicle to the garage and knock off More design alternatives have been supplied, the more reliable and more stable locking mechanism that returns the vehicle to the garage and knock off can be designed；3, the locking switch that returns the vehicle to the garage and knock off is generally located on On pushing hands bar, designed not only in this way so that the locking mechanism that returns the vehicle to the garage and knock off is simple in structure, easy to use and reliable, but also is also convenient for and pushing hands bar On other locking mechanisms linkage, to reduce exposed switch.

As shown in figure 17, go forward foot lever 11 lower end and lower preceding foot lever 12 upper end respectively be in it is mutually matched under it is hook-shaped, Hook-shaped head is arranged under in the go forward articulated shaft 122 of the lower end of foot lever 11 and the upper end of lower preceding foot lever 12, foot lever 11 of going forward Lower end and the upper end of lower preceding foot lever 12 realize that locking is affixed or releases by the way that the front foot rod lock mechanism of hook-shaped root is arranged under Put folding.Go forward foot lever and lower preceding foot lever use under hook-shaped articulated structure, not only there is preferable support switching performance, but also make Front and back wheel after must folding has the arrangement space that more reasonably misplaces.

Cross bar includes：

First crossbar 70 is arranged between 11 top of foot lever of going forward of side frames, and the both ends of first crossbar 70 are respectively with two The cross bar installing arm that 11 top of foot lever extends out of going forward of side frame is hinged；Alternatively, being arranged under the back support rod 40 of side frames Between portion, the cross bar installing arm that the both ends of first crossbar 70 extend out with 40 lower part of the back support rod of side frames respectively is hinged； It may insure that vertical supporting rod 14 and back support rod 40 are hinged securely to ensure the first four-bar mechanism stabilized structure in this way.This reality It applies example to be preferably provided between 40 lower part of back support rod of side frames, be pushed away under mounted on back support rod 40 when seat bar 41 in this way When on hand lever 50, the seat webbing and first crossbar 70 being mounted in both sides seat bar 41 are respectively to the back support rod of side frames 40 Upper and lower ends are all connected, and stable structure is further ensured.

Second crossbar 80 is arranged between 11 lower part of foot lever of going forward of side frames, and the both ends of second crossbar 80 are respectively with two The cross bar installing arm that 11 lower part of foot lever extends out of going forward of side frame is hinged；Between the preceding foot lever 10 that may insure side frames in this way Stable connection, while second crossbar 80 plays foot-operated effect.

Third cross bar 25 is arranged between the rear foot lever 20 of side frames, the both ends of third cross bar 25 respectively with side frames The cross bar installing arm that foot lever 20 extends out afterwards is hinged；It may insure stable connection between the rear foot lever 20 of side frames in this way.

4th cross bar 65 is arranged between the upper pushing hands bar 61 of side frames, the both 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 it is hinged；Alternatively, be arranged between the pushing hands bar hand handle 611 of side frames, the The cross bar installing arm that the both ends of four cross bars 65 extend out with pushing hands bar hand handle 611 respectively is hinged.It may insure side frames in this way Pushing hands bar between stable connection.

As shown in Figure 1, when side frames are in expansion lock-out state, first crossbar 70, second crossbar 80, third cross bar 25 It is distributed in different planes with the articulated shaft on the 4th cross bar 65；As shown in Fig. 6-Figure 11, rugosity is collapsed when side frames are in When state, the articulated shaft on first crossbar 70, second crossbar 80, third cross bar 25 and the 4th cross bar 65 is located on same axis.This Sample can carry out opposite fold so that the vehicle frame volume after folding is more along same axis when side frame is collapsed and folded to side frames It is small；And when side frame is unfolded to lock, and may insure stable structure, avoid cart from generating loosening or folding in use.

The mounting structure of above-mentioned each cross bar may refer to the patent of Publication No. CN103507846A and CN204222933U Document, the present embodiment are illustrated by taking third cross bar 25 as an example, and the cross bar peace for installing and folding is equipped on rear foot lever 20 Arm is filled, cross bar installing arm is divided into 20 fixed tail portion of rear foot lever and the head far from rear foot lever 20, the head of cross bar installing arm On articulated shaft is installed, similarly on third cross bar 25 be equipped with for when side frame opposite direction turn down storage cross bar installing arm cross Bar installing arm accommodating groove is arranged with the cross bar mounting hole of coordination hinge axis installation in the upper and lower of cross bar installing arm accommodating groove. The shape and structure of cross bar installing arm can be designed according to the needs of component evacuation and structural support when folding.

The structure in the prior art used in Folding trolley may be used in the mounting structure of seat and seat webbing, 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 Two connectors 412 are mounted on back support rod 40 and lower pushing hands bar 50, the first connector 411 it is hinged with back support rod 40 and with seat Chair bar 41 is fixedly connected, and the second connector 412 is mounted on lower pushing hands bar 50, and seat bar 41 is shelved on the second connector 412 Or be slidably connected with 412 sleeve of the second connector, the seat bar 41 of side frames is entirely through soft on the pushing hands bar being arranged Material is stably connected with car body holding.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 select the form of cloth set.

As shown in Figure 12 and Figure 13, upper pushing hands rod lock mechanism includes upper pushing hands bar telescoping switch 6111, upper pushing hands rod lock Pin 613, shrapnel 614 and shrapnel set 615, shrapnel 614 are fixed on the insertion section of pushing hands bar 62 during pushing hands bar 61 is inserted into, shrapnel 614 outer warping end fixes upper pushing hands lever lock rationed marketing 613, upper pushing hands lever lock rationed marketing 613 stretch out upper pushing hands bar 61 and with middle pushing hands bar Lock pin holes cooperation on 62, shrapnel set 615 are set in outside shrapnel 614 and are included in by the outer warping end of sliding control shrapnel 614 Or stick up, shrapnel set 615 is connect by steel wire with the upper pushing hands bar telescoping switch 6111 in pushing hands bar hand handle 611.It presses Down when upper pushing hands bar telescoping switch 6111, steel wire pulls 615 sliding of shrapnel set that the outer warping end of shrapnel 614 is included in shrapnel set 615 So that upper pushing hands lever lock rationed marketing 613 on 614 outer warping end of shrapnel therefrom deviates to unlock in the lock pin holes on pushing hands bar 62 State, above pushing hands bar 61 can move up and down in middle pushing hands bar 62 and realize that pushing hands bar is flexible in this way；Pushing hands bar is pressed in release Telescoping switch 6111, after the upper movement in place of pushing hands bar 61, shrapnel 614 resets under own resilient effect, the outer warping end of shrapnel 614 Stick up the lock pin holes on pushing hands bar 62 during shrapnel set 615 makes the upper pushing hands lever lock rationed marketing 613 on 614 outer warping end of shrapnel be inserted into Middle realization position locking.Multiple lock pin holes are set on middle pushing hands bar 62, the height of pushing hands bar can be adjusted in this way 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 equipped with and can accommodate the groove 52 of 40 upper end of back support rod, the upper end of back support rod 40 be inserted into the groove 52 and with this The side wall of groove is hinged by articulated shaft, and the upper end of back support rod 40 is equipped with sticking department 42, when back support rod 40 is pushed away relative under 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, pacifies The switch 621 that returns the vehicle to the garage and knock off on middle pushing hands bar 62 is connect by steel wire with side frame locking piece 51；When side frame locking piece 51 stretch into it is recessed When being positioned with the cooperation of the sticking department 42 of 40 upper end of back support rod in slot 52, back support rod 40 cannot be rotated relative to lower pushing hands bar 50 Both to realize, locking is affixed, and two four-bar mechanisms of such side frame are locked can not activity；When side frame locking piece 51 moves back When returning and being detached with the sticking department 42 of 40 upper end of back support rod, back support rod 40 can be rotated relative to lower pushing hands bar 50, in this way Two four-bar mechanisms of side frame can activity progress folding.In this way, the connection stroke of not only return the vehicle to the garage and knock off switch and side frame locking piece Short, simple in structure, 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 not easy by child getting in contact, safer.

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

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 connect with the linkage portion 44 for being arranged in 40 upper end of back support rod, in push away Hand lever locking piece 54 is slidably arranged in lower 50 top of pushing hands bar and matches with 622 grafting of lock hole for being arranged in middle 62 lower end of pushing hands bar It closes, middle pushing hands rod lock part 54 is connect by steel wire with STATEMENT OF FEDERALLY SPONSORED 53, and middle pushing hands rod lock part 54 is assigned by spring in insertion The trend of lock hole 622 on pushing hands bar 62；When back support rod 40 is rotated relative to lower pushing hands bar 50, linkage portion 44 drives connection Moving part 53 moves, pushing hands rod lock part 54 and 622 grafting of lock hole on middle pushing hands bar 62 during STATEMENT OF FEDERALLY SPONSORED 53 is driven by steel wire Locking or separation release.In this way, the locking of middle 62 folding of pushing hands bar and release and the folding of four-bar mechanism are linked, Exposed switch need not in addition be increased come pushing hands bar folding in controlling, cost is reduced, improve safety, and pass through coordination The matching relationship of pushing hands rod lock part 54 in design, STATEMENT OF FEDERALLY SPONSORED 53 and linkage portion 44, can be in four-bar mechanism folding to suitable The folding of middle pushing hands bar is restarted in position, more convenient to use reasonable.

Linkage portion 44 and the cooperation of STATEMENT OF FEDERALLY SPONSORED 53 can be diversified forms, as long as can drawing be converted to for the rotation of linkage portion Dynamic steel wire.In the present embodiment preferably, as shown in figure 15,53 hook of STATEMENT OF FEDERALLY SPONSORED that linkage portion 44 passes through hanging groove and hook form Connection is hung, simple in structure, cooperation is reliable, small.In other embodiments, the two can also pass through elongated groove/opening and pin The mode of column coordinates, and can also be that the wire loop of steel wire is directly articulated in linkage portion.

Because the moving direction and the moving direction of STATEMENT OF FEDERALLY SPONSORED 53 of middle pushing hands rod lock part 54 are inconsistent, middle pushing hands bar Locking piece 54 needs to connect by turning member with STATEMENT OF FEDERALLY SPONSORED 53, which can be the pulley to detour for steel wire or branch Column.In the present embodiment preferably, as shown in figure 16, a lever piece 55, lever are hingedly set inside the upper end of lower pushing hands bar 50 One end of part 55 is flexibly connected by elongated groove/opening, pin with middle pushing hands rod lock part 54, and the other end of lever piece 55 passes through steel Line is connect with STATEMENT OF FEDERALLY SPONSORED 53, simple in structure in this way, easy to adjust.

Middle pushing hands rod lock part 54 and the mating structure of the lock hole 622 on middle pushing hands bar 62 can refer to publication number For the lock gear structure in the patent document of CN204415487U.In the present embodiment preferably, as shown in figure 16, middle pushing hands bar Locking piece 54 is a pin, and the articulated shaft of the pin and middle pushing hands bar 62 and lower pushing hands bar 50 is not coaxial, simple in structure in this way, body Product is small, and locking is reliable.

As shown in figure 17, above-mentioned front foot rod lock mechanism, including lower front foot rod lock hook 111 and lower front foot rod lock portion 121, the middle part of lower front foot rod lock hook 111 is hingedly arranged in hook-shaped root under foot lever 11 of going forward, lower front foot rod lock hook 111 one end is the hook portion 1112 that cooperation is hooked with lower front foot rod lock portion 121, and one end of lower front foot rod lock hook 111 is to stick up The release portion 1111 for going out to go forward outside foot lever 11, it is close to assign hook portion 1112 that lower front foot rod lock hook 111 is connected with elastic component The trend in lower front foot rod lock portion 121；Instantly the rear foot lever 20 that the release portion 1111 of front foot rod lock hook 111 is folded pushes back When, the hook portion 1112 of lower front foot rod lock hook 111 is detached with lower front foot rod lock portion 121, to which lower preceding foot lever 12 can be with folding； When rear foot lever 20 and lower preceding foot lever 12 are unfolded, the release portion 1111 of lower front foot rod lock hook 111 sticks up outward, lower front foot lever lock The hook portion 1112 and lower front foot rod lock portion 121 for determining hook 111 hook cooperation, to which lower preceding foot lever 12 and the locking of foot lever 11 of going forward are solid It connects.In this way, using locking hook forms being folded with lower preceding foot lever after side frame folding, more meet use habit, and Pass through interoperation so that the simpler convenience of folding operation.

In order to solve the problem of " because position of taking is not to being easy to scatter after left and right sides holder doubling gathering ", the 4th Side frame doubling locking mechanism is provided on cross bar, as shown in Fig. 1, Figure 18, including the doubling that is slidably arranged on the 4th cross bar 65 One end of locking switch 651 and doubling locking pin 6511, doubling locking pin 6511 is connect with doubling locking switch 651, doubling lock The other end of rationed marketing 6511 stretch out the end of the 4th cross bar 65 and with 6121 grafting of lock hole that is arranged in cross bar installing arm 612 Cooperation is affixed to lock the two, and cross bar installing arm 612 is fixed on pushing hands bar 61, and the end of cross bar installing arm 612 is set It is equipped with two lock holes 6121 for corresponding to side frame doubled state and side frame unfolded state respectively.In this way, in side frame doubled state and Side frame unfolded state can realize locking, need operation doubling locking switch that could unlock folding.

As shown in Figure 1, Figure 2, shown in Figure 18, ceiling frame 652, which is sleeved on the 4th cross bar 65, front and back to be overturn, and passes through stop bit Structure allows it to be laid flat for sunshade use.

Above-mentioned baby carriage use process is as follows：

As shown in Figure 1, baby carriage is when being unfolded 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, front foot rod lock mechanism and side frame doubling locking mechanism are in the affixed state of locking, entire vehicle frame Support is firm.

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

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

As shown in figure 4, then pulling the switch 621 that returns the vehicle to the garage and knock off, the locking mechanism that returns the vehicle to the garage and knock off is discharged, back support rod 40 and lower pushing hands bar are made It unlocks, pushes down between 50, by side frames by front support rod 30, back support rod 40, foot lever 11 of going forward, lower pushing hands bar First four-bar mechanism folding of 50 compositions so that preceding foot lever 11 is moved and drawn close lower pushing hands bar 50 upwards, while front support rod 30 drive the be made of foot lever 11 of going forward, first connecting rod 31, second connecting rod 32 the 2nd 4 by the first connecting rod 31 affixed with it Link mechanism folding, to which preceding foot lever 11 is moved and drawn close foot lever 20 upwards after pulling；

As shown in figure 5, after back support rod 40 turns to certain position, by being linked so that middle pushing hands rod lock machine Structure discharges, and lower pushing hands bar 50 unlocks with middle pushing hands bar 62, continues to push against, and makes in the preceding movement of foot lever 11 upwards of lower pushing hands bar 50 While folding in pushing hands bar 62.

As shown in fig. 6, pushing hands bar, front and back support bar group at the first four-bar mechanism and rear foot lever 20 be accommodated in respectively The both sides of preceding foot lever 11, rear foot lever 20 discharge front foot rod lock mechanism.

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

As shown in figure 9, pulling side frame doubling locking switch 651, side frames doubling locking is released, by side frames along the first cross Bar 70, second crossbar 80, third cross bar 25 and the 4th cross bar 65 both sides hinge axes fold, as shown in Figure 10, Figure 11, two After side frame doubling in place, side frame doubling locking mechanism locks side frames, completes entire vehicle frame folding.

A kind of collapsing mechanism of baby carriage, including two side frames symmetrically arranged on the left and the right and be connected to side frames it Between cross bar, each side frame includes preceding foot lever 10, rear foot lever 20 and pushing hands bar, and 10 lower section of preceding foot lever is equipped with front-wheel 13, the rear foot The lower section of bar 20 is equipped with trailing wheel 21, and the lower end of front support rod 30 and the middle part of preceding foot lever 10 are hinged, 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 and support are perpendicular The upper end of bar 14 is hinged, and the lower end of vertical supporting rod 14 and the upper end of rear foot lever 20 are hinged, the middle part of vertical supporting rod 14 and preceding foot lever 10 upper end is fixedly connected or is integrally formed；One end of first connecting rod 31 be fixedly connected with the lower end of front support rod 30 or one at 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；In this way, connecting front support rod 30 and back support rod 40 between preceding foot lever 10 and pushing hands bar and constituting folding first Four-bar mechanism, by being sequentially connected first connecting rod 31 and second connecting rod 32 and constituting second between preceding foot lever 10 and rear foot lever 20 Four-bar mechanism, the first four-bar mechanism and the rear foot lever 20 of folded state are stacked in preceding about 10 both sides of foot lever respectively；Wherein, It is realized by the locking mechanism that returns the vehicle to the garage and knock off between the upper end and the middle part of pushing hands bar of back support rod 40 and locks affixed or release folding.

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

A kind of method for folding that returns the vehicle to the garage and knock off of baby carriage as described 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, push down on, by side frames by front support rod 30, back support rod 40, the first four-bar mechanism folding of preceding foot lever 10, pushing hands bar composition so that preceding foot lever 11 is moved and is drawn close pushing hands bar upwards, Front support rod 30 is driven by the first connecting rod 31 affixed with it by preceding foot lever 10, first connecting rod 31,32 groups of second connecting rod simultaneously At the second four-bar mechanism folding, to pull after foot lever 20 upwards before foot lever 11 move and draw close；It continues to push against, pushing hands Bar, front and back support bar group at the first four-bar mechanism and rear foot lever 20 be accommodated in respectively before foot lever 10 both sides.

A kind of foot lever of baby carriage, including preceding foot lever 10 and rear foot lever 20, the preceding foot lever 10 divide for foot lever of going forward 11 and lower preceding foot lever 12, front-wheel 13 is installed in lower 12 lower end of preceding foot lever, and the lower end of the upper end of lower preceding foot lever 12 and foot lever 11 of going forward is cut with scissors It connects, 20 lower section of rear foot lever is equipped with trailing wheel 21, and the upper end of rear foot lever 20 and the upper end for foot lever 11 of going forward are hinged, the foot lever of going forward 11 lower end and the upper end of lower preceding foot lever 12 be in respectively it is mutually matched under hook-shaped, the lower end for foot lever 11 of going forward and lower preceding foot lever 12 The articulated shaft 122 of upper end hook-shaped head is set under, the upper end of the lower end for foot lever 11 of going forward and lower preceding foot lever 12 is by setting The front foot rod lock mechanism realization for setting hook-shaped root under locks affixed or release folding.

A kind of baby carriage, including two side frames symmetrically arranged on the left and the right and the cross bar that is connected between side frames, Each side frame includes foot lever and pushing hands bar, and the foot lever is foot lever as described above.

A kind of foot lever method for folding of baby carriage as described above, rear foot lever 20 is accommodated in and is gone forward under foot lever 11 Side, rear foot lever 20 discharge front foot rod lock mechanism, and lower preceding 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 hand handle 611, upper pushing hands bar 61, middle pushing hands bar 62 and under push away Hand lever 50, upper pushing hands bar 61 are plugged in a manner of it can stretch up and down in middle pushing hands bar 62 and by upper pushing hands rod lock mechanism 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 passes through middle pushing hands lever lock Determine mechanism realization and locks affixed or release folding.

A kind of baby carriage, including two side frames symmetrically arranged on the left and the right and the cross bar that is connected between side frames, Each side frame includes foot lever and pushing hands bar, and the pushing hands bar is pushing hands bar as described above.

A kind of pushing hands bar folding method of baby carriage presses the upper pushing hands bar telescoping switch in pushing hands bar hand handle 611 6111, pushing hands rod lock mechanism in release pushes down on, and upper pushing hands bar 61 is shunk in passage to middle pushing hands bar 62；Then make Lower pushing hands bar 50 is rotated relative to support element, and by being linked so that middle pushing hands rod lock mechanism release, lower pushing hands bar 50 It unlocks, continues to push against with middle pushing hands bar 62, make lower pushing hands bar 50 and middle 62 folding of pushing hands bar together.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiments or example in can be combined in any suitable manner.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective In the case of can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.It is all the present invention Within spirit and principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims

1. a kind of baby carriage, including two side frames symmetrically arranged on the left and the right and the cross bar that is connected between side frames, often A side frame includes preceding foot lever (10), rear foot lever (20) and pushing hands bar, and front-wheel (13), rear foot lever are equipped with below preceding foot lever (10) (20) lower section trailing wheel (21) is installed, which is characterized in that the pushing hands bar include pushing hands bar hand handle (611), upper pushing hands bar (61), Middle pushing hands bar (62) and lower pushing hands bar (50), upper pushing hands bar (61) are plugged in middle pushing hands bar (62) in a manner of it can stretch up and down In and by upper pushing hands rod lock mechanism realize that locking is affixed or release is flexible, the lower end of middle pushing hands bar (62) and lower pushing hands bar (50) upper end is hinged and affixed by the realization locking of middle pushing hands rod lock mechanism or discharges folding；The preceding foot lever (10) is divided into Go forward foot lever (11) and lower preceding foot lever (12), lower preceding foot lever (12) lower end installation front-wheel (13), the upper end of lower preceding foot lever (12) with Go forward foot lever (11) lower end it is hinged, the middle part of the lower end of front support rod (30) and foot lever (11) of going forward is hinged, front support rod (30) upper end and the lower end of lower pushing hands bar (50) are hinged, and the upper end of back support rod (40) and the middle part of lower pushing hands bar (50) are cut with scissors It connects, the lower end of back support rod (40) is hinged with the upper end of vertical supporting rod (14), lower end and the rear foot lever (20) of vertical supporting rod (14) Upper end it is hinged, the middle part of vertical supporting rod (14) is fixedly connected or is integrally formed with the upper end of foot lever of going forward (11)；First connecting rod (31) one end is fixedly connected or is integrally formed with the lower end of front support rod (30), and the other end of first connecting rod (31) and second connects One end of bar (32) is hinged, and the other end of second connecting rod (32) is hinged with the middle part of rear foot lever (20)；In this way, foot lever of going forward (11) Front support rod (30) and back support rod (40) are connected between lower pushing hands bar (50) and constitute folding first four-bar mechanism, It goes 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 second Four-bar mechanism, the first four-bar mechanism of folded state and rear foot lever (20) are stacked in foot lever of going forward (11) up and down two respectively Side；

Wherein, the cross bar includes：

First crossbar (70) is arranged between foot lever of going forward (11) top of side frames, the both ends of first crossbar (70) respectively with The cross bar installing arm that foot lever of going forward (11) top of side frames extends out is hinged；Alternatively, the back support rod in side frames is arranged (40) between lower part, the cross bar that the both ends of first crossbar (70) extend out with the back support rod of side frames (40) lower part respectively is pacified It is hinged to fill arm；

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

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

4th cross bar (65) is arranged between the upper pushing hands bar (61) of side frames, the both 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；Alternatively, be arranged side frames pushing hands bar hand handle (611) it Between, the cross bar installing arm that the both ends of the 4th cross bar (65) extend out with pushing hands bar hand handle (611) respectively is hinged；

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

2. a kind of baby carriage according to claim 1, which is characterized in that seat bar (41) passes through the first connector (411) it is mounted on back support rod (40) and lower pushing hands bar (50) with the second connector (412), the first connector (411) is with after Supporting rod (40) is hinged and is fixedly connected with seat bar (41), and the second connector (412) is mounted on lower pushing hands bar (50), seat Bar (41) is shelved on the second connector (412) or is slidably connected with the second connector (412) sleeve.

3. a kind of baby carriage according to claim 1, which is characterized in that the upper pushing hands rod lock mechanism includes upper Pushing hands bar telescoping switch (6111), upper pushing hands lever lock rationed marketing (613), shrapnel (614) and shrapnel set (615), shrapnel (614) are fixed The outer warping end of the insertion section of pushing hands bar (62) in upper pushing hands bar (61) is inserted into, shrapnel (614) fixes upper pushing hands lever lock rationed marketing (613), in upper pushing hands lever lock rationed marketing (613) stretching pushing hands bar (61) and on middle pushing hands bar (62) lock pin holes coordinate, bullet Piece set (615) is set in shrapnel (614) outside and is included in by the outer warping end of sliding control shrapnel (614) or sticks up, shrapnel set (615) it is connect with the upper pushing hands bar telescoping switch (6111) in pushing hands bar hand handle (611) by steel wire.

4. a kind of baby carriage according to claim 1, which is characterized in that the upper end of back support rod (40) and lower pushing hands It is realized by the locking mechanism that returns the vehicle to the garage and knock off between the middle part of bar (50) and locks affixed or release folding；The locking mechanism that returns the vehicle to the garage and knock off includes receiving Stopping switch (621) and side frame locking piece (51), the middle part of lower pushing hands bar (50), which is equipped with, can accommodate back support rod (40) upper end The upper end of groove (52), back support rod (40) is inserted into the groove (52) and is hinged by articulated shaft with the side wall of the groove, after The upper end of supporting rod (40) is equipped with sticking department (42), when back support rod (40) is rotated relative to lower pushing hands bar (50), sticking department (42) can be movable in groove (52), side frame locking piece (51) is slidably arranged in lower pushing hands bar (50), and return the vehicle to the garage and knock off switch (621) It is connect with side frame locking piece (51) by steel wire；When side frame locking piece (51) stretch into groove (52) with back support rod (40) upper end Sticking department (42) cooperation positioning when, back support rod (40) both cannot rotate to realize locking relative to lower pushing hands bar (50) Affixed, two four-bar mechanisms of such side frame are locked can not activity；When side frame locking piece (51) retract and and back support rod (40) when sticking department (42) separation of upper end, back support rod (40) can be rotated relative to lower pushing hands bar (50), such side frame Two four-bar mechanisms can activity progress folding.

5. a kind of baby carriage according to claim 1, which is characterized in that the middle pushing hands rod lock mechanism includes connection Moving part (53) and middle pushing hands rod lock part (54), STATEMENT OF FEDERALLY SPONSORED (53) are slidably arranged in the middle part of lower pushing hands bar (50) and exist with setting The linkage portion (44) of back support rod (40) upper end connects, and middle pushing hands rod lock part (54) is slidably arranged in lower pushing hands bar (50) top And it is mating with lock hole (622) in middle pushing hands bar (62) lower end is arranged, middle pushing hands rod lock part (54) by steel wire with STATEMENT OF FEDERALLY SPONSORED (53) connects, and middle pushing hands rod lock part (54) assigns the lock hole (622) in insertion on pushing hands bar (62) by spring Trend；When back support rod (40) is rotated relative to lower pushing hands bar (50), linkage portion (44) drives STATEMENT OF FEDERALLY SPONSORED (53) mobile, connection Lock hole (622) locking latch during moving part (53) is driven by steel wire on pushing hands rod lock part (54) and middle pushing hands bar (62) or Person detaches release.

6. a kind of baby carriage according to claim 1, which is characterized in that the lower end of the foot lever of going forward (11) is under The upper end of preceding foot lever (12) respectively be in it is mutually matched under hook-shaped, the upper end of the lower end of foot lever of going forward (11) and lower preceding foot lever (12) Articulated shaft (122) hook-shaped head is set under, the upper end of the lower end of foot lever of going forward (11) and lower preceding foot lever (12) is by setting The front foot rod lock mechanism realization for setting hook-shaped root under locks affixed or release folding.

7. a kind of baby carriage according to claim 6, which is characterized in that the front foot rod lock mechanism, including under Front foot rod lock hook (111) and lower front foot rod lock portion (121), the middle part of lower front foot rod lock hook (111) are hingedly arranged upper Under preceding foot lever (11) in hook-shaped root, one end of lower front foot rod lock hook (111) is to be hooked with lower front foot rod lock portion (121) The hook portion (1112) of cooperation, the other end of lower front foot rod lock hook (111) are to stick up the release portion of foot lever of going forward (11) outside (1111), lower front foot rod lock hook (111) is connected with elastic component to assign hook portion (1112) close to lower front foot rod lock portion (121) trend；Instantly when the rear foot lever (20) that the release portion (1111) of front foot rod lock hook (111) is folded pushes back, before lower The hook portion (1112) of foot lever lock hook (111) is detached with lower front foot rod lock portion (121), to which lower preceding foot lever (12) can receive Folding；When rear foot lever (20) and lower preceding foot lever (12) are unfolded, the release portion (1111) of lower front foot rod lock hook (111) is stuck up outward Go out, the hook portion (1112) of lower front foot rod lock hook (111) is hooked with lower front foot rod lock portion (121) to be coordinated, to lower preceding foot lever (12) it is locked with foot lever of going forward (11) affixed.

8. a kind of baby carriage according to claim 1, which is characterized in that be provided with side frame doubling on the 4th cross bar Locking mechanism, the side frame doubling locking mechanism include be slidably arranged in doubling locking switch (651) on the 4th cross bar (65) and One end of doubling locking pin (6511), doubling locking pin (6511) is connect with doubling locking switch (651), doubling locking pin (6511) the other end stretches out the end of the 4th cross bar (65) and the lock hole (6121) with setting in cross bar installing arm (612) Mating affixed to lock the two, cross bar installing arm (612) is fixed on pushing hands bar (61), cross bar installing arm (612) end set has two lock holes (6121) for corresponding to side frame doubled state and side frame unfolded state respectively.

9. a kind of baby carriage according to claim 1, which is characterized in that a ceiling frame (652) is sleeved on the 4th cross It front and back can be overturn on bar (65), and so that it is laid flat by bit-stopping structure and used for sunshade.