阅读说明：本技术 一种婴儿手推车 (A kind of baby stroller ) 是由 高雄伟 余吴翔 刘杰 于 2019-09-18 设计创作，主要内容包括：一种婴儿手推车,涉及婴童用品技术领域,其包括制动机构,制动机构包括：刹车齿,设置在车轮的侧面,在相邻的两个刹车齿之间形成刹车齿槽；刹车销,设于叉臂靠车轮的一侧,刹车销可沿着叉臂往上运动卡入刹车齿槽中；刹车挂钩,安装在轮架安装座上并可相对于轮架安装座运动,刹车挂钩设有钩挂部；传动件,安装在轮架上并可相对于轮架运动；驱动件,安装在车架或轮架安装座上并且连接刹车挂钩；刹车销复位部件,安装在轮架上,可利用其自身的回弹力推动刹车销复位并带动传动件复位；刹车挂钩复位部件,安装在轮架安装座上,可利用其自身的回弹力推动刹车挂钩复位。该婴儿手推车的脚轮可以全部为万向轮,具有万向轮拆装方便并且可同步制动的优点。(A kind of baby stroller is related to infant articles technical field comprising arrestment mechanism, arrestment mechanism include: brake tooth, and the side of wheel is arranged in, and brake tooth socket is formed between two adjacent brake teeth；Brake pin leans on the side of wheel set on yoke, and brake pin can up be moved along yoke to be caught in brake tooth socket；Brake hook, is mounted in wheel carrier mounting base and can move relative to wheel carrier mounting base, and brake hook is equipped with hook portion；Driving member is mounted on wheel carrier and can move relative to wheel carrier；Actuator is mounted in vehicle frame or wheel carrier mounting base and connects brake hook；Brake pin reset components, are mounted on wheel carrier, brake pin can be pushed to reset using the screen resilience of its own and driving member is driven to reset；Brake hook reset components, are mounted in wheel carrier mounting base, brake hook can be pushed to reset using the screen resilience of its own.The castor of the baby stroller can have the advantages that universal wheel is convenient for disassembly and assembly and can synchronous braking with all universal wheels.)

1. a kind of baby stroller, including vehicle frame (1), steering wheel group, arrestment mechanism and seat support (4), the steering wheel group Including wheel carrier (2a), the wheel (2b) being mounted on the yoke (2a1) of the wheel carrier (2a) and it is fixed at vehicle frame (1) bottom The wheel carrier mounting base (2c) in portion, the wheel carrier (2a) is detachably connected with wheel carrier mounting base (2c) and wheel carrier (2a) can be relative to wheel Frame mounting base (2c) rotates in the horizontal plane, which is characterized in that the arrestment mechanism includes:

It brakes tooth (3a), setting forms brake tooth in the side of the wheel (2b) between two adjacent brake teeth (3a) Slot (3b)；

Brake pin (3c) is set to the yoke (2a1) close to the side of wheel (2b), and the brake pin (3c) can be along yoke (2a1) up movement is caught in brake tooth socket (3b) and can move down the abjection from brake tooth socket (3b) along yoke (2a1)；

Brake hook (3d), is mounted on the wheel carrier mounting base (2c) and can move relative to wheel carrier mounting base (2c), described Brake hook (3d) is equipped with hook portion (3d1)；

Driving member (3e) is mounted on the wheel carrier (2a) and can move relative to wheel carrier (2a), and the driving member (3e) is used for It drives brake pin (3c) to move and is equipped with the barb (3e1) matched with the shape of hook portion (3d1), the barb (3e1) is located above hook portion (3d1) and is spaced a distance；

Actuator (3f) is mounted in the vehicle frame (1) or wheel carrier mounting base (2c) and connects brake hook (3d)；

Brake pin reset components (3g), is mounted on the wheel carrier (2a), can push the brake using the screen resilience of its own Pin (3c) resets and driving member (3e) is driven to reset；

Brake hook reset components (3h), is mounted on the wheel carrier mounting base (2c), can be pushed using the screen resilience of its own The brake hook (3d) resets；

When the actuator (3f) applies pulling force drive brake hook (3d) movement, brake hook reset components (3h) generation The hook portion (3d1) of flexible deformation, the brake hook (3d) up hooks the barb (3e1) of driving member (3e) and drives biography Moving part (3e) movement, drives brake pin (3c) up to move along yoke (2a1) and to stop when the driving member (3e) moves Vehicle pin reset components (3g) generate flexible deformation, and the brake pin (3c), which is caught in brake tooth socket (3b), realizes braking；The drive After the pulling force that moving part (3f) applies is cancelled, the screen resilience of brake hook reset components (3h) pushes brake hook (3d) down Movement resets, and the screen resilience of brake pin reset components (3g) pushes brake pin (3c) to move down simultaneously along yoke (2a1) Driving member (3e) is driven to reset, the brake pin (3c) abjection, brake release from brake tooth socket (3b).

2. baby stroller according to claim 1, it is characterised in that: the arrestment mechanism further includes sliding sleeve (3i), institute Sliding sleeve (3i) ring set to be stated to live yoke (2a1), the brake pin (3c) is fixedly connected on the side of sliding sleeve (3i) close to wheel (2b), The driving member (3e) is equipped with the pulling part (3e2) for lifting sliding sleeve (3i), and the brake hook (3d) drives driving member (3e) move when, the pulling part (3e2) up lifts sliding sleeve (3i) so that the sliding sleeve (3i) along yoke (2a1) up Movement, to up move and be caught in brake tooth socket (3b) along yoke (2a1) with brake pin (3c).

3. baby stroller according to claim 2, it is characterised in that: the driving member (3e) is swing arm, the swing arm One end setting hinge joint and at the hinge joint with wheel carrier (2a) hingedly, the pulling part (3e2) be set on swing arm other end Pin, the top of the sliding sleeve (3i) is equipped with flange (3i1), and the flange (3i1) is located at the top of pin, the barb (3e1) is set between aforementioned hinge point and pin, and it is past that the hook portion (3d1) of the brake hook (3d) hooks barb (3e1) When upper lifting, the swing arm is rotated around the hinge joint of itself and wheel carrier (2a), and the pin hooks the flange on the top sliding sleeve (3i) It (3i1) and up lifts, so that the sliding sleeve (3i) is up moved along yoke (2a1).

4. baby stroller described in any one of -3 according to claim 1, it is characterised in that: the vehicle frame (1) further includes Two transverse tubes (1a), the both ends of every transverse tube (1a) are separately connected the wheel carrier mounting base (2c) positioned at its left and right side, described Actuator (3f) includes brake pulling wire (3f1) and is stepped on by the brake that brake pulling wire (3f1) is indirectly connected with brake hook (3d) Plate (3f2) is mounted on brake pedal (3f2) on two transverse tubes (1a), and the brake pedal (3f2) can be relative to transverse tube (1a) rotation；

When brake, trampling the brake pedal (3f2) rotates it relative to transverse tube (1a), at this time the brake pedal (3f2) It pulls brake pulling wire (3f1), the brake pulling wire (3f1) up lifts brake hook (3d).

5. baby stroller according to claim 4, it is characterised in that: the actuator (3f) further includes that orientation pulls pin (3f3), the brake pulling wire (3f1) pull pin (3f3) to be indirectly connected with brake pedal (3f2) by orientation, and the brake is stepped on Plate (3f2) includes the upper housing (3f2a) being detachably connected and lower case (3f2b), and the transverse tube (1a) is from upper housing It is passed through in gap between (3f2a) and lower case (3f2b), the inner wall of the upper housing (3f2a) and lower case (3f2b) is close The outer peripheral surface of transverse tube (1a), sets that there are two the first skewed slot (3f2a1), the lower cases on the inner wall of the upper housing (3f2a) It is set on the inner wall of (3f2b) there are two the second skewed slot (3f2b1), first skewed slot (3f2a1) projection in the horizontal plane and position The projection intersection in a certain angle of the second skewed slot (3f2b1) in the horizontal plane immediately below it is spaced on the transverse tube (1a) It opens up there are two the long hole (1a1) playing the guiding role, the long hole (1a1) extends in left-right direction and vertically through transverse tube (1a) is equipped with an orientation in each long hole (1a1) and pulls pin (3f3), be equipped with two brakings in every transverse tube (1a) Bracing wire (3f1), the both ends of every brake pulling wire (3f1) are separately connected an orientation and pull pin (3f3) and a brake hook (3d), every orientation pull the both ends of pin (3f3) one first skewed slot of stretching and corresponding insertion from long hole (1a1) In (3f2a1) and second skewed slot (3f2b1)；

When brake, trampling the brake pedal (3f2) rotates it relative to transverse tube (1a), at this time first skewed slot The side wall of (3f2a1) and the second skewed slot (3f2b1) pushes against orientation together and pulls the outer peripheral surface of pin (3f3) and orientation is driven to pull pin (3f3) is moved in long hole (1a1), and two orientations pull pin (3f3) respectively to draw during moving towards in long hole (1a1) Brake pulling wire connected to it (3f1) is pulled, up (3d) Lai Shixian is linked up in lifting brake simultaneously by two brake pulling wires (3f1) Wheel (2b) synchronous braking of the left and right sides.

6. baby stroller described in any one of -3 according to claim 1, it is characterised in that: the vehicle frame (1) includes one The top of group ejector sleeve (1b) and two groups of foot tubes (1c) arranged in a crossed manner below ejector sleeve (1b), the ejector sleeve (1b) connects handle (1d), the wheel carrier mounting base (2c) are fixedly connected on the bottom of foot tube (1c), and the ejector sleeve (1b) passes through the first turning joint (5) it is connect with foot tube (1c), first turning joint (5) includes the first connector for being connected to two groups of foot tube (1c) tops (5a) and the second connector (5b) and the third connector (5c) for being fixedly connected on ejector sleeve (1b), first connector (5a) and second Connector (5b) connection, the third connector (5c) be articulated with the first connector (5a) and/the second connector (5b) and using hinge joint as Center of rotation is equipped with the ejector sleeve locking component for locking ejector sleeve (1b), the ejector sleeve (1b) on two groups of foot tubes (1c) After being unlocked release, the ejector sleeve (1b), which is turned to the other side from the side of cart, can convert the implementation direction of cart.

7. baby stroller according to claim 6, it is characterised in that: the baby stroller further includes universal wheel steering lock Locking mechanism, universal wheel steering, locking mechanism include locking hole (6a), lock pin (6b), lock pin reset components (6c) and determine To block (6d) is pulled, the locking hole (6a) is provided on wheel carrier (2a), and the lock pin (6b) is arranged in wheel carrier mounting base And can stretch out from the wheel carrier mounting base bottom end (2c) and be inserted into locking hole (6a) down again, lock pin reset components (6c) setting In wheel carrier mounting base (2c) and lock pin (6b) can be pushed to reset down by the screen resilience of its own, in the foot tube (1c) Equipped with block (6d) can be pulled along the orientation that its axis direction moves, also wear in the foot tube (1c) for connecting lock pin (6b) The lock pin bracing wire (6e) of block (6d) is pulled with orientation, the orientation pulls block (6d) to be equipped with trundle (6d1), the third The inside of connector (5c) is equipped with guide groove (5c1), and the guide groove (5c1) includes the first releasing section (5c1a), the second releasing section (5c1b) and in the lifting section being connected between the first releasing section (5c1a) and the second releasing section (5c1b) and in both The guide surface of (5c1c), first releasing section (5c1a) and the second releasing section (5c1b) and third connector (5c) center of rotation it Between distance be greater than the guide surface and the distance between third connector (5c) center of rotation of lifting section (5c1c), the trundle (6d1) is protruded into guide groove (5c1)；

It is described when rotating the ejector sleeve (1b) and third connector (5c) being driven to turn to the position by ejector sleeve locking component locking The guide surface of lifting section (5c1c) up lifts the trundle (6d1) that orientation in wherein one group of foot tube (1c) pulls block (6d), makes The orientation pulls block (6d) lock pin bracing wire (6e) for being connected up to lift and by lock pin connected to it (6b) from lock Only extraction in hole (6a), while orientation set in another group of foot tube (1c) pulls the trundle (6d1) of block (6d) to be located to lead In the first releasing section (5c1a) or the second releasing section (5c1b) of slot (5c1), when with the orientation pull block (6d) pass through lock pin When the lock pin (6b) of bracing wire (6e) connection is with locking hole (6a) alignment that wheel carrier (2a) is opened up below, the lock pin (6b) It is pushed down and be inserted into locking hole (6a) by the screen resilience of corresponding lock pin reset components (6c).

8. baby stroller according to claim 6, it is characterised in that: the ejector sleeve locking component includes being arranged in foot tube The first pin (7a) on (1c), the bottom end of the ejector sleeve (1b) are equipped with latch (7b) and latch reset components (7c), The latch (7b) is slidably connected with ejector sleeve (1b) and can only move back and forth along the axis direction of ejector sleeve (1b), the ejector sleeve It is equipped in (1b) latch bracing wire (7d), is also equipped with unlocking part (7e), the unlocking part on the ejector sleeve (1b) (7e) is slidably connected with ejector sleeve (1b) and can move back and forth along the axis direction of ejector sleeve (1b), the bottom of the latch bracing wire (7d) The top of end connection latch (7b), the latch bracing wire (7d) connects unlocking part (7e), the bottom of the latch (7b) End offers the spacing breach (7b1) matched with the first pin (7a)；

When up pulling unlocking part (7e) along the ejector sleeve (1b), the unlocking part (7e) is drawn by latch bracing wire (7d) Dynamic latch (7b) is up moved along the axis of ejector sleeve (1b), while the latch reset components (7c) generate elasticity and become Shape, latch (7b) bottom end are blocked the spacing breach (7b1) of the first pin (7a) far from the first pin (7a) originally, are realized Unlock；After unclamping the unlocking part (7e), under the rebound effect of the latch reset components (7c), the latch (7b) moves down along the axis direction of ejector sleeve (1b), and the latch (7b) pulls unlocking part by latch bracing wire (7d) The axis direction of (7e) also along ejector sleeve (1b) moves down, and the latch (7b) moves down along the axis direction of ejector sleeve (1b) When spacing breach (7b1) to its bottom end blocks the first pin (7a), the ejector sleeve (1b) is locked up.

9. baby stroller according to claim 6, it is characterised in that: first connector (5a), the second connector (5b) And third connector (5c) is hinged by same hinge joint, the seat support (4) passes through the second turning joint (8) and the One connector (5a) and the second connector (5b) connection, second turning joint (8) includes pedestal (8a) and sliding seat (8b), described Hingedly, the sliding seat (8b) is mounted on pedestal (8a) and is limited by pedestal (8a) and the first connector (5a) and the second connector (5b) It is made as only moving up and down relative to pedestal (8a), the seat support (4) includes foldable guardrail (4a), the guardrail The end of (4a) is fixedly connected with the 4th connector (8c), and the 4th connector (8c) is hinged on sliding seat (8b) and can be locked Only, which further includes foot tube lockable mechanism；

The foot tube lockable mechanism includes the second pin (9a) being fixed on the foot tube (1c) of two groups of front and back, the sliding seat The bottom of (8b) is equipped with the locking mouth (8b1) matched with the second pin (9a), blocks the second pin by the locking mouth (8b1) Following closely (9a) prevents the two groups of foot tubes (1c) in front and back from collapsing toward centre, is also equipped on the pedestal (8a) for preventing sliding seat (8b) The sliding seat locking component up moved, the 4th connector (8c) are equipped with sliding seat unlocking structure, the seat support (4) The rotation of the 4th connector (8c) is driven when folding, during the 4th connector (8c) rotation, the sliding seat unlocking structure It pushes sliding seat locking component mobile and releases the locking to sliding seat (8b), the sliding seat (8b) after unlock is up mentioned, is allowed The locking mouth (8b1) can release the locking to foot tube (1c) far from the second pin (9a).

10. baby stroller according to claim 9, it is characterised in that: the sliding seat locking component includes locking hook (8d), the locking hook (8d) are connect with pedestal (8a) by pin shaft and can be overturn by central spindle of pin shaft, the locking hook (8d) Bottom end be equipped with fastener (8d1), offer the button hole (8b2) matched with fastener (8d1), the bottom on the sliding seat (8b) It is additionally provided with locking hook reset spring (8e) on seat (8a), is pushed and is locked by the rebound of the locking hook reset spring (8e) itself Only hook (8d), so that the fastener (8d1) is stuck in button hole (8b2)；

The sliding seat unlocking structure includes the driving face (8c1) being arranged on the 4th connector (8c), the driving face (8c1) Lower section is equipped with push rod (8f), and the push rod (8f) is movably connected on sliding seat (8b) and be restricted to only can be relative to sliding seat (8b) is moved up and down, and the top of the push rod (8f) abuts against driving face (8c1), the bottom end of the push rod (8f) and locking hook The top of (8d) is equipped with mutually identical inclined-plane, the axis parallel on the inclined-plane and pin shaft, the inclined-plane of push rod (8f) bottom end The inclined-plane on the top locking hook (8d) is abutted against, the distance of described the 4th connector (8c) hinge joint of driving face (8c1) start point distance is less than Distance of its terminal away from the 4th connector (8c) hinge joint；

The rotation of the 4th connector (8c) is driven when seat support (4) folding, during the 4th connector (8c) rotation, The position that the driving face (8c1) pushes against the top push rod (8f) is gradually moved to terminal, the driving face (8c1) by its starting point It pushes push rod (8f) to move down, locking hook is brought pressure to bear on by the inclined-plane of its bottom end when the push rod (8f) moves down The inclined-plane on the top (8d) compresses locking hook reset spring (8e) after locking hook (8d) stress and is central spindle overturning using pin shaft, So that the fastener (8d1) is deviate from from button hole (8b2).

Technical field

The present invention relates to infant articles technical field, in particular to a kind of baby stroller.

Background technique

In recent years, with the development of economy, baby stroller is gradually popularized, and people are for the easy-to-use of trolley Property is higher and higher with security requirement.Such as certain state compulsions provide that the baby stroller of market sale allows for realizing together Step braking, i.e. user can check two rear-wheels simultaneously when single tramples brake and (be referred to as " singly to step on double in trolley industry Stop ").For fast pulley, realize that synchronous braking is very easy to, but for universal wheel, it is necessary to by cleverly structure Design, which can just combine, freely to be turned to and synchronous braking.

Chinese patent literature " CN203528569U " discloses a kind of linkage braking mechanism that can be used for universal wheel, passes through Hauling rope drives the braking mechanism on the two-wheeled of left and right to link and brakes, and hauling rope uses multi-segment structure, occurs in wheel and fixed frame The position of relative rotation, two sections of hauling ropes realize being rotatably connected to each other by adapter, to take into account universal wheel It freely turns to and synchronous braking.It is difficult to combine and freely turns to and synchronous braking is asked although the patent solves universal wheel Topic, it should be noted however that when above-mentioned linkage braking mechanism is applied on baby stroller, due to its brake structure that links Limitation, universal wheel dismounting is inconvenient, and to use convenient for consumer, when factory, which usually requires universal wheel is mounted on wheel group in advance, consolidates In reservation, it is not easy to save logistics transportation space.

Chinese patent literature " CN108820029A " discloses that one kind can be used for steering wheel group and dismountable perambulator is same Arrestment mechanism is walked, which realizes brake pushing block corresponding to two wheels is synchronous down by transmission component Pressure, brake pushing block rotates after pushing the brake pin being disposed below, brake pin to be pressurized when moving down again, so that its is close One end of brake tooth in crotch from stretching out and being inserted into the tooth socket of brake tooth, to realize synchronous braking.Due to the synchronous braking Brake pin in mechanism is stretched out from crotch, sells adaptable then should open up and brake on the side wall of crotch ontology Hole, in this way when brake pin rotates, one end close to brake tooth can be extended laterally, and then be inserted into brake tooth Brake is completed in tooth socket.It should be pointed out that the synchronous brake mechanism that can be used for steering wheel group solves document The inconvenient problem of universal wheel dismounting in " CN203528569U ", but it is very important, due to the hole opened up on crotch ontology Close to wheel, during trolley routine use, the foreign matters such as some tiny stones are easy to be caught in hole, so as to cause brake Vehicle pin cannot normally stretch out, and affect the reliability of arrestment mechanism.

Summary of the invention

In view of the problems of the existing technology, the present invention provides that a kind of universal wheel is removable and braking reliability is higher Baby stroller.

In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of baby stroller, including vehicle frame, Steering wheel group, arrestment mechanism and seat support, the steering wheel group include wheel carrier, the wheel on the yoke for being mounted on the wheel carrier And it is fixed at the wheel carrier mounting base of bottom of frame, the wheel carrier is detachably connected with wheel carrier mounting base and wheel carrier can be opposite It is freely rotated in the horizontal plane in wheel carrier mounting base, the arrestment mechanism includes:

Brake tooth, and the side of the wheel is arranged in, and brake tooth socket is formed between two adjacent brake teeth；

Brake pin, set on the yoke close to the side of wheel, the brake pin can up be moved along yoke is caught in brake tooth It can move in slot and down to deviate from from brake tooth socket along yoke；

Brake hook, is mounted in the wheel carrier mounting base and can move relative to wheel carrier mounting base, and the brake hook is equipped with Hook portion；

Driving member is mounted on the wheel carrier and can move relative to wheel carrier, and the driving member is for driving the movement of brake pin simultaneously Equipped with the barb that the shape with hook portion matches, the barb is located above hook portion and is spaced a distance；

Actuator is mounted in the vehicle frame or wheel carrier mounting base and connects brake hook；

Brake pin reset components, are mounted on wheel carrier, the brake pin can be pushed to reset using the screen resilience of its own and driven Driving member resets；

Brake hook reset components, are mounted in the wheel carrier mounting base, can push the brake using the screen resilience of its own Hook resets；

When the actuator applies pulling force drive brake hook movement, the brake hook reset components generation flexible deformation, institute The hook portion for stating brake hook up hooks the barb of driving member and drives drive member, and when drive member drives Brake pin up moves along yoke and brake pin reset components is made to generate flexible deformation, and the brake pin card enters the tooth socket that brakes Middle realization braking；After the pulling force that the actuator applies is cancelled, the screen resilience of the brake hook reset components pushes brake to hang Hook moves reset down, and the screen resilience of the brake pin reset components pushes brake pin to move down along yoke and drive transmission Part resets, and the brake pin is deviate from from brake tooth socket, brake release.

Preferably, the aforementioned arrestment mechanism further includes sliding sleeve, and the sliding sleeve ring set lives yoke, and the brake pin is fixed to be connected The side in sliding sleeve close to wheel is connect, the driving member is equipped with the pulling part for lifting sliding sleeve, and the brake hook, which drives, to be passed When moving part moves, the pulling part up lifts sliding sleeve, so that the sliding sleeve is up moved along yoke, thus with the brake Vehicle pin is up moved along yoke and is caught in brake tooth socket.

Further, the driving member be swing arm, the swing arm one end setting hinge joint and at the hinge joint with wheel Frame is hinged, and the pulling part is the pin set on swing arm other end, and the top of the sliding sleeve is equipped with flange, and the flange is located at column The top of pin, the barb are set between aforementioned hinge point and pin, and it is past that the hook portion of the brake hook hooks barb When upper lifting, the swing arm is rotated around the hinge joint of itself and wheel carrier, and the pin hooks the flange on sliding sleeve top and up lifts, So that the sliding sleeve is up moved along yoke.

Wherein, the vehicle frame further includes two transverse tubes, and the both ends of every transverse tube are separately connected positioned at its left and right side Wheel carrier mounting base, the actuator include brake pulling wire and are indirectly connected with the brake pedal of brake hook by brake pulling wire, Brake pedal is mounted on two transverse tubes, the brake pedal can be rotated relative to transverse tube；

When brake, trampling the brake pedal rotates it relative to transverse tube, and the brake pedal pulls brake pulling wire at this time, institute It states brake pulling wire and up lifts brake hook.

Further, the actuator further includes that orientation pulls pin, and the brake pulling wire pulls pin by orientation and stops Vehicle pedal is indirectly connected with, and the brake pedal includes the upper housing being detachably connected and lower case, and the transverse tube is from upper Passed through in gap between shell and lower case, the inner wall of the upper housing and lower case close to transverse tube outer peripheral surface, it is described on It is set on the inner wall of shell there are two the first skewed slot, sets that there are two the second skewed slot, first skewed slots on the inner wall of the lower case The projection of the second skewed slot for projecting with being located at immediately below it in the horizontal plane in the horizontal plane is in a certain angle to intersect, the cross It is spaced apart and is set there are two the long hole playing the guiding role on pipe, the long hole extends in left-right direction and vertically through transverse tube, each It is equipped with an orientation in long hole and pulls pin, is equipped with two brake pulling wires, the both ends of every brake pulling wire in every transverse tube It is separately connected an orientation and pulls pin and a brake hook, every orientation pulls the both ends of pin to stretch out and correspond to from long hole It is inserted into first skewed slot and second skewed slot；

When brake, trampling the brake pedal rotates it relative to transverse tube, at this time the side of first skewed slot and the second skewed slot Wall pushes against orientation together and pulls the outer peripheral surface of pin and drive orientation that pin is pulled to move in long hole, and two orientations pull pin in long hole In move towards during respectively pull brake pulling wire connected to it, pass through two brake pulling wires simultaneously up lifting brake Link up with the wheel synchronous braking to realize the left and right sides.

Wherein, the vehicle frame includes one group of ejector sleeve and two below ejector sleeve group foot tube arranged in a crossed manner, the ejector sleeve Top connects handle, and the wheel carrier mounting base is fixedly connected on the bottom of foot tube, and the ejector sleeve passes through the first turning joint and foot Pipe connection, first turning joint include being connected to the first connector and the second connector and the fixation on two groups of foot tube tops Be connected to the third connector of ejector sleeve, first connector is connect with the second connector, the third connector be articulated with the first connector and/ Second connector and using hinge joint as center of rotation, is equipped with the ejector sleeve locking part for locking ejector sleeve in two groups of foot tubes Part, after the ejector sleeve is unlocked release, the ejector sleeve, which is turned to the other side from the side of cart, can convert the implementation of cart Direction.

Further, aforementioned baby stroller further includes universal wheel steering, locking mechanism, the universal wheel steering, locking Mechanism includes that locking hole, lock pin, lock pin reset components and orientation pull block, and the locking hole is provided on wheel carrier, described Lock pin is arranged in wheel carrier mounting base and can stretch out from wheel carrier mounting base bottom end to be inserted into locking hole down again, the lock pin Reset components are arranged in wheel carrier mounting base and lock pin can be pushed to reset down by the screen resilience of its own, in the foot tube Equipped with block can be pulled along the orientation that its axis direction moves, is also worn in the foot tube and pull block for connecting lock pin and orientation Lock pin bracing wire, the orientation pulls block to be equipped with trundle, and the inside of the third connector is equipped with guide groove, the guide groove packet It includes the first releasing section, the second releasing section and is mentioned between the first releasing section and the second releasing section and in what both was connected Section is drawn, the distance between guide surface and third connector center of rotation of first releasing section and the second releasing section are greater than lifting section Guide surface and the distance between third connector center of rotation, the trundle protrudes into guide groove；

When rotating the ejector sleeve and third connector being driven to turn to the position by ejector sleeve locking component locking, the lifting section Guide surface up lifts the trundle that orientation in wherein one group of foot tube pulls block, so that the lock pin that the orientation pulls block to be connected Bracing wire up lifts and extract lock pin connected to it from locking hole out, while orientation set in another group of foot tube is drawn The trundle of motion block is located in the first releasing section or the second releasing section of guide groove, when with the orientation pull block pass through lock pin bracing wire When the lock pin of connection is with the locking hole alignment that wheel carrier is opened up below, the lock pin is by corresponding lock pin reset portion The screen resilience of part is pushed down and is inserted into locking hole.

Wherein, the ejector sleeve locking component includes the first pin being arranged in foot tube, and the bottom end of the ejector sleeve is equipped with Latch and latch reset components, the latch are slidably connected with ejector sleeve and can only move back along the axis direction of ejector sleeve It is dynamic, it is equipped with latch bracing wire in the ejector sleeve, unlocking part is also equipped on the ejector sleeve, the unlocking part and ejector sleeve are sliding Dynamic to connect and move back and forth along the axis direction of ejector sleeve, the bottom end of the latch bracing wire connects latch, the latch The top of bracing wire connects unlocking part, and the bottom end of the latch offers the spacing breach matched with the first pin；

When up pulling unlocking part along the ejector sleeve, the unlocking part pulls latch along ejector sleeve by latch bracing wire Axis up move, while the latch reset components generate flexible deformation, and the latch bottom end blocks first originally The spacing breach of pin realizes unlock far from the first pin；After unclamping the unlocking part, in the latch reset components Under rebound effect, the latch moves down along the axis direction of ejector sleeve, and the latch is pulled by latch bracing wire Unlocking part also moves down along the axis direction of ejector sleeve, and the latch moves down to its bottom end along the axis direction of ejector sleeve Spacing breach when blocking the first pin, the ejector sleeve is locked up.

Further, first connector, the second connector and third connector are hinged by same hinge joint, described Seat support is connect by the second turning joint with the first connector and the second connector, and second turning joint includes pedestal and work Dynamic seat, the pedestal and the first connector and the second connector are hinged, and the sliding seat is mounted on the base and be restricted to only can phase Pedestal is moved up and down, the seat support includes foldable guardrail, and the end of the guardrail is fixedly connected with the 4th and connects Head, the 4th connector are hinged in sliding seat and can be locked up, which further includes foot tube lockable mechanism；

The foot tube lockable mechanism includes the second pin being fixed in the foot tube of two groups of front and back, and the bottom of the sliding seat is set There is the locking mouth matched with the second pin, the second pin is blocked by the locking mouth, the two groups of foot tubes in front and back is prevented to receive toward centre Hold together, the sliding seat locking component for preventing sliding seat from up moving is also equipped on the pedestal, is set on the 4th connector There is a sliding seat unlocking structure, when seat support folding drives the rotation of the 4th connector, in the process of the 4th connector rotation In, the sliding seat unlocking structure pushes sliding seat locking component mobile and releases the locking to sliding seat, by the work after unlock Dynamic seat up mentions, and allows the locking mouth that can release the locking to foot tube far from the second pin.

Wherein, the sliding seat locking component includes locking hook, and the locking hook is connect with pedestal by pin shaft and can be with Pin shaft is central spindle overturning, and the bottom end of the locking hook is equipped with fastener, offers the button hole matched with fastener in the sliding seat, It is additionally provided with locking hook reset spring on the pedestal, locking hook is pushed by the rebound of the locking hook reset spring itself, So that the fastener is stuck in button hole；

The sliding seat unlocking structure includes the driving face being arranged on the 4th connector, and the lower section of the driving face is equipped with push rod, The push rod is movably connected on sliding seat and is restricted to only move up and down relative to sliding seat, the top of the push rod against Firmly driving face, the bottom end of the push rod and the top of locking hook are equipped with mutually identical inclined-plane, the axle center on the inclined-plane and pin shaft In parallel, the inclined-plane of the push rod bottom end abuts against the inclined-plane on locking hook top, the 4th connector hinge joint of driving face start point distance Distance be less than distance of its terminal away from the 4th connector hinge joint；

The rotation of the 4th connector is driven when the seat support folding, during the 4th connector rotation, the driving face The position for pushing against push rod top is gradually moved to terminal by its starting point, and the driving face pushes push rod to move down, described to push away Inclined-plane when bar moves down by its bottom end brings pressure to bear on the inclined-plane on locking hook top, compresses lock after the locking hook stress Only hook reset spring and using pin shaft as central spindle overturn so that the fastener from button hole deviate from.

Firstly, the barb transmitting that the present invention links up with the hook portion being arranged by brake and is arranged on driving member is braked Power, when not braking, hook portion is spaced a distance with barb, and arrestment mechanism will not be formed the rotation of wheel carrier in the horizontal plane Constraint, universal wheel can be turned to freely.Secondly as the cart involved by the present invention when not braking, is located at wheel in arrestment mechanism Driving member on frame is originally at not connected off-state with the brake hook being located in wheel carrier mounting base, therefore can be very light Wheel carrier is split or is assembled together with wheel carrier mounting base by loose ground, and the presence of arrestment mechanism not will lead to universal wheel and be difficult to Dismounting.Again, braking principle of the invention is up to lift driving member by the hook that brakes, then drive brake to sell to by driving member Upper movement is simultaneously caught in realization braking in brake tooth socket, since aforementioned brake pin only moves up and down along yoke in braking process, therefore It does not need to open up the hole stretched out for brake pin close to the side of wheel in yoke, would not exist in hole yet and be caught in stone etc. The case where foreign matter causes brake pin not stretch out normally, the functional reliability of arrestment mechanism is higher.

Detailed description of the invention

Fig. 1 be embodiment in baby stroller be fully deployed after overall structure diagram；

Fig. 2 is the overall structure diagram that baby stroller shown in Fig. 1 is in semi-collapsed condition；

Fig. 3 is the completely folded overall structure diagram of baby stroller shown in Fig. 1；

Fig. 4 is the overall structure diagram of arrestment mechanism；

Fig. 5 is the attachment structure schematic diagram of each moving component in arrestment mechanism, and the lower case of brake pedal is not shown；

Fig. 6 is the attachment structure schematic diagram that orientation pulls between pin and the lower case of brake pedal in arrestment mechanism；

Fig. 7 is the positional diagram that orientation pulls between pin and cross bar in arrestment mechanism；

Fig. 8 is the overall structure diagram of universal wheel steering, locking mechanism；

When Fig. 9 is that ejector sleeve is in lockup state, the attachment structure schematic diagram between foot tube；

Figure 10 is the decomposition texture schematic diagram of Fig. 9；

When Figure 11 is that foot tube lockable mechanism is in lockup state, overall structure diagram；

Figure 12 is the attachment structure schematic diagram in foot tube lockable mechanism between driving face and push rod；

When Figure 13 is that foot tube lockable mechanism is in the unlocked state, overall structure diagram；

Figure 14 is locking hook when deviating from from button hole, the positional diagram between said two devices, the bottom of the second turning joint Seat is not shown；

Figure 15 is the partial enlarged view at the position A in Fig. 4；

Figure 16 is the partial enlarged view at the position B in Fig. 4；

Figure 17 is the partial enlarged view at the position A in Fig. 5；

Figure 18 is the partial enlarged view at the position A in Fig. 8；

Figure 19 is the partial enlarged view at the position B in Fig. 8；

Figure 20 is the partial enlarged view at the position C in Fig. 8；

Figure 21 is the partial enlarged view at the position A in Fig. 9；

Figure 22 is the partial enlarged view at the position A in Figure 10；

Figure 23 is the partial enlarged view at the position A in Figure 11；

Figure 24 is the partial enlarged view at the position A in Figure 12；

Figure 25 is the partial enlarged view at the position A in Figure 13；

Figure 26 is the partial enlarged view at the position B in Figure 13；

Figure 27 is the partial enlarged view at the position A in Figure 14.

In figure:

1 --- vehicle frame 4 --- seat support 5 --- first turning joint

8 --- the second turning joint 1a --- transverse tube 1b --- ejector sleeves

1c --- foot tube 1d --- handle 2a --- wheel carrier

2b --- wheel 2c --- wheel carrier mounting base 3a --- brake tooth

3b --- brake tooth socket 3c --- brake pin 3d --- brake hook

3e --- driving member 3f --- actuator 3g --- brake pin reset components

3h --- brake hook reset components 3i --- sliding sleeve 4a --- guardrail

5a --- the first connector 5b --- the second connector 5c --- third connector

6a --- locking hole 6b --- lock pin 6c --- lock pin reset components

--- orientation pulls block 6e --- lock pin bracing wire 7a --- first pin to 6d

7b --- latch 7c --- latch reset components 7d --- latch bracing wire

7e --- unlocking part 8a --- pedestal 8b --- sliding seat

8c --- the 4th connector 8d --- locking hook 8e --- locking hook reset spring

8f --- push rod 9a --- the second pin 1a1 --- long hole

2a1 --- yoke 3d1 --- hook portion 3e1 --- barb

3e2 --- pulling part 3f1 --- brake pulling wire 3f2 --- brake pedal

--- orientation pulls pin 3i1 --- flange 5c1 --- guide groove to 3f3

6d1 --- trundle 7b1 --- spacing breach 8b1 --- locking mouth

8d1 --- fastener 8b2 --- button hole 8C1 --- driving face

3f2a --- upper housing 3f2b --- lower case 3f2a1 --- first skewed slot

3f2b1 --- the second skewed slot 5c1a --- the first releasing section 5c1b --- second releasing section

5c1c --- lifting section.

Specific embodiment

For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing Bright, the content that embodiment refers to not is limitation of 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", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or two More than, unless otherwise specifically defined.

Fig. 1-3 shows the overall structure of baby stroller involved by the present invention, on the whole, with existing baby stroller It equally, also include vehicle frame 1, steering wheel group, arrestment mechanism and seat support 4, wherein steering wheel group includes wheel carrier 2a, installation Wheel 2b on the yoke 2a1 of the wheel carrier 2a and wheel carrier mounting base 2c for being fixed at 1 bottom of vehicle frame, dismounts for defence And the purpose in logistics transportation space is saved, and dismountable connection type is used between wheel carrier 2a and wheel carrier mounting base 2c, and it is normal The steering wheel group seen is the same, and above-mentioned wheel carrier 2a can be rotated in the horizontal plane relative to wheel carrier mounting base 2c.Illustrate baby stroller It is the structure of arrestment mechanism with first big difference of existing cart, is specifically shown in shown in Fig. 4-7 and Figure 15-17, brakes Mechanism includes:1、Brake tooth 3a, and brake tooth 3a is arranged in the side of wheel 2b, is formed between two adjacent brake tooth 3a There is brake tooth socket 3b；2、Brake pin 3c, brake pin 3c are set to yoke 2a1 close to the side of wheel 2b, and brake pin 3c can be along fork Arm 2a1 up move is caught in brake tooth socket 3b in realize braking, furthermore brake pin 3c can also be moved down along yoke 2a1 from Deviate from brake tooth socket 3b, to release braking；3、Brake hook 3d, brake hook 3d are mounted on the wheel carrier mounting base 2c It can move above and relative to wheel carrier mounting base 2c, brake hook 3d is equipped with hook portion 3d1；4、Driving member 3e, the driving member 3e peace It can move on wheel carrier 2a and relative to wheel carrier 2a, driving member 3e is for driving brake pin 3c to move and being equipped with and hook portion The barb 3e1 that the shape of 3d1 matches, barb 3e1 are located above hook portion 3d1 and are spaced a distance；5、Actuator 3f, actuator 3f are mounted on vehicle frame 1 or wheel carrier mounting base 2c and connect brake hook 3d；6、Brake pin reset components 3g, brake pin reset components 3g(for example can be reset spring shown in figure) it is mounted on wheel carrier 2a, it can be using it certainly The screen resilience of body pushes brake pin 3c to reset and driving member 3e is driven to reset；7、Brake hook reset components 3h, brake hook Reset components 3h(for example can be reset spring shown in figure) it is mounted on wheel carrier mounting base 2c, it can returning using its own Elastic force pushes brake hook 3d to reset.

The working principle of above-mentioned arrestment mechanism are as follows: when actuator 3f, which applies pulling force, drives brake hook 3d movement, brake It links up with reset components 3h stress and generates flexible deformation, the hook portion 3d1 of brake hook 3d up hooks the barb of driving member 3e 3e1 simultaneously drives driving member 3e to move, and brake pin 3c is driven up to move along yoke 2a1 and to brake when driving member 3e is moved It sells reset components 3g and generates flexible deformation, brake pin 3c, which is caught in brake tooth socket 3b, realizes braking.When aforementioned actuator 3f applies Pulling force cancel after, brake hook reset components 3h screen resilience by push brake hook 3d down move realization reset, simultaneously The screen resilience of brake pin reset components 3g pushes brake pin 3c to move down along yoke 2a1 and driving member 3e is driven to reset, most Brake pin 3c deviates from from brake tooth socket 3b eventually, brake release.

In the embodiment above, the structure with the prior art of arrestment mechanism used by cart are entirely different, above-mentioned implementation Example transmits brake force by linking up with the barb 3e1 being arranged on the hook portion 3d1 and driving member 3e that are arranged on 3d in brake, does not make When dynamic, hook portion 3d1 is spaced a distance with barb 3e1, and arrestment mechanism will not be formed the rotation of wheel carrier in the horizontal plane Constraint, universal wheel can be turned to freely.In addition, due to, when not braking, being located on wheel carrier 2a in arrestment mechanism in above-mentioned cart Driving member 3e link up with 3d with the brake for being located at 2c in wheel carrier mounting base and be originally at not connected off-state, therefore can be very Easily wheel carrier 2a and wheel carrier mounting base 2c are split or be assembled together, the presence of arrestment mechanism not will lead to universal Wheel is difficult to dismount.In addition, the braking process of above-mentioned arrestment mechanism is up to lift driving member 3e by brake hook 3d, then by passing Moving part 3e drives brake pin 3c up to move and be caught in brake tooth socket 3b and realizes braking, since brake pin 3c is in braking process It only moves up and down along yoke 2a1, therefore does not need to open up the hole stretched out for brake pin 3c close to the side of wheel 2b in yoke 2a1 Hole would not also exist in hole and be caught in the case where foreign matters such as stone cause brake pin 3c not stretch out normally, arrestment mechanism Functional reliability is higher.

On the basis of the above embodiments, actual implementation for guaranteeing to brake to sell between 3c and yoke 2a1 in application, connect The considerations of reliability and connection structure compactedness and entire braking system job stability, aforementioned arrestment mechanism can also include Sliding sleeve 3i ring set lives in yoke 2a1 by sliding sleeve 3i, and brake pin 3c is then fixedly connected on sliding sleeve 3i close to the side of wheel 2b, is passing The pulling part 3e2 for lifting sliding sleeve 3i is arranged in moving part 3e.When brake, driving member can be driven by brake hook 3d 3e movement, at this moment the pulling part 3e2 of driving member 3e again up lift sliding sleeve 3i, so that it may so that sliding sleeve 3i along yoke 2a1 up It moves, is braked to up be moved with brake pin 3c along yoke 2a1 by sliding sleeve 3i and be caught in realization in brake tooth socket 3b, solution Except the process of braking and the process of completion braking are on the contrary, therefore not to repeat here.

Equally for the considerations of guaranteeing brake system structure compactedness and functional reliability, as shown, aforesaid transmissions 3e in practical application for example can use swing arm structure, the swing arm one end be arranged hinge joint and at the hinge joint with Wheel carrier 2a is hinged, is then the pin set on swing arm other end as pulling part 3e2, correspondingly, is equipped with and turns on the top of sliding sleeve 3i Side 3i1, flange 3i1 are located at the top of pin, and barb 3e1 is set between aforementioned hinge point and pin.In this way, when brake When the hook portion 3d1 of hook 3d hooks barb 3e1 and up lifts, swing arm can be rotated around the hinge joint of itself and wheel carrier 2a, at this time Pin as pulling part 3e2 will hook the flange 3i1 on the top sliding sleeve 3i and up lift, so that sliding sleeve 3i is along yoke 2a1 is up moved.

As existing baby stroller, as shown, the vehicle frame 1 of baby stroller involved in above-described embodiment also wraps Two transverse tube 1a are included, the both ends of every transverse tube 1a are also the wheel carrier mounting base 2c being separately connected positioned at its left and right side, wherein Actuator 3f includes brake pulling wire 3f1 and is indirectly connected with the brake pedal 3f2 of brake hook 3d by brake pulling wire 3f1, with Unlike common baby stroller, illustrates and be mounted on brake pedal 3f2 on two transverse tube 1a, brake pedal 3f2 can phase Transverse tube 1a is rotated, that is to say, that in the baby stroller shown in Fig. 1-3, the two groups of castors in front and back have brake.With it is existing Have that technology is similar, above-mentioned baby stroller rotates it relative to transverse tube 1a in brake, and by trampling brake pedal 3f2 It realizing, brake pulling wire 3f1 will be pullled when brake pedal 3f2 is operated, and brake pulling wire 3f1 will up lift brake hook 3d, To drive brake hook 3d movement.

As a kind of optinal plan of realization " one steps on dual brake (i.e. left and right wheels synchronous braking) ", aforementioned actuator 3f can be with Using the structure for as shown in the figure including orientation pulling pin 3f3, brake pulling wire 3f1 is pulled by orientation sells 3f3 and brake pedal 3f2 It is indirectly connected with, wherein brake pedal 3f2 includes the upper housing 3f2a and lower case 3f2b being detachably connected, transverse tube 1a It is passed through in gap between upper housing 3f2a and lower case 3f2b, the inner wall of upper housing 3f2a and lower case 3f2b are close to transverse tube The outer peripheral surface of 1a is set on the inner wall of upper housing 3f2a there are two the first skewed slot 3f2a1, set on the inner wall of lower case 3f2b there are two The projection of second skewed slot 3f2b1, the first skewed slot 3f2a1 in the horizontal plane is with the second skewed slot 3f2b1 being located at immediately below it in water Projection intersection in a certain angle in plane, in addition, interval opens up two long hole 1a1 playing the guiding role on transverse tube 1a, it is long Hole 1a1 extends in left-right direction (i.e. the axis direction of transverse tube shown in Fig. 7) and vertically through transverse tube 1a, in each long hole 1a1 It wears an orientation and pulls and sell 3f3, wear two brake pulling wire 3f1, the both ends of every brake pulling wire 3f1 in every transverse tube 1a It is separately connected an orientation and pulls and sell 3f3 and brake hook 3d, every orientation pulls the both ends of pin 3f3 from long hole 1a1 Middle stretching simultaneously corresponds in insertion one a first skewed slot 3f2a1 and second skewed slot 3f2b1.

Above-mentioned arrestment mechanism realizes the principle of left and right wheels synchronous braking are as follows: when brake, trampling brake pedal 3f2 keeps it opposite In transverse tube 1a rotate, at this time the first skewed slot 3f2a1 and the second skewed slot 3f2b1 relative to transverse tube 1a rotate, the first skewed slot 3f2a1 and The side wall of second skewed slot 3f2b1 pushes against orientation together and pulls the outer peripheral surface of pin 3f3 and orientation is driven to pull pin 3f3 in long hole 1a1 Middle movement (axis direction i.e. along diagram transverse tube 1a moves), the mistake that two orientations pull pin 3f3 to move towards in long hole 1a1 Brake pulling wire 3f1 connected to it is respectively pullled in journey, by two brake pulling wire 3f1 simultaneously up lifting brake hook 3d come Realize the wheel 2b synchronous braking of the left and right sides.

In addition, as shown in Fig. 1-3, Fig. 9-10 and Figure 21-22, as common baby stroller, in above-described embodiment In, vehicle frame 1 also includes the top connection of one group of ejector sleeve 1b and two below ejector sleeve 1b group foot tube 1c arranged in a crossed manner, ejector sleeve 1b Handle 1d, wheel carrier mounting base 2c are fixedly connected on the bottom of foot tube 1c, with existing stroller the difference is that: ejector sleeve 1b It is to be connect by the first turning joint 5 with foot tube 1c.Wherein, the first turning joint 5 includes being connected to two groups of tops foot tube 1c The first connector 5a and the second connector 5b at end and the third connector 5c for being fixedly connected on ejector sleeve 1b, the first connector 5a connect with second Head 5b connection, third connector 5c are articulated with the first connector 5a and the/the second connector 5b and using hinge joints as center of rotation, two groups of feet The ejector sleeve locking component for locking ejector sleeve 1b is equipped on pipe 1c, after ejector sleeve 1b is unlocked release, by ejector sleeve 1b from cart Side, which turns to the other side, can convert the implementation direction (realizing the function of " implementation capable of reversing ") of cart.

In addition to this, to carry out convenient for user, above-mentioned baby stroller can also include universal rotation as shown in Figure 8 To lockable mechanism, specifically, in conjunction with shown in Figure 18-20, the universal wheel steering, locking mechanism include locking hole 6a, lock pin 6b, Lock pin reset components 6c(for example can be reset spring shown in figure) and orientation pull block 6d, locking hole 6a is provided with wheel On frame 2a, lock pin 6b is arranged in wheel carrier mounting base and can stretch out from the wheel carrier bottom end mounting base 2c is inserted into locking hole 6a down again In, lock pin reset components 6c is arranged in wheel carrier mounting base 2c and can push lock pin 6b down by the screen resilience of its own It resets, block 6d can be pulled along the orientation that its axis direction moves by being equipped in foot tube 1c, also be worn in foot tube 1c for connecting locking It sells 6b and orientation pulls the lock pin bracing wire 6e of block 6d, orientation pulls block 6d to be equipped with trundle 6d1, the inside of third connector 5c Equipped with guide groove 5c1, guide groove 5c1 include the first releasing section 5c1a, the second releasing section 5c1b and in the first releasing section 5c1a and Lifting the section 5c1c, the first releasing section 5c1a and the second releasing section 5c1b being connected between second releasing section 5c1b and in both Guide surface and the distance between third connector 5c center of rotation is greater than the guide surface of lifting section 5c1c and third connector 5c is rotated The distance between axle center, trundle 6d1 are protruded into guide groove 5c1.

It is noted that above-mentioned universal wheel steering, locking mechanism may be implemented the linkage between ejector sleeve 1b, such as when When rotating ejector sleeve 1b and third connector 5c being driven to turn to the position by ejector sleeve locking component locking, the guide surface of section 5c1c is lifted The trundle 6d1 that orientation in wherein one group of foot tube 1c pulls block 6d is up lifted, so that the lock that the orientation pulls block 6d to be connected Shotpin bracing wire 6e is up lifted and extract lock pin 6b connected to it from locking hole 6a out, while institute in another group of foot tube 1c The orientation of setting pulls the trundle 6d1 of block 6d to be located in the first releasing section 5c1a or the second releasing section 5c1b of guide groove 5c1, when With the same locking hole 6a that wheel carrier 2a is opened up below of the lock pin 6b that the orientation pulls block 6d to connect by lock pin bracing wire 6e When alignment, lock pin 6b is pushed down by the screen resilience of corresponding lock pin reset components 6c and is inserted into locking hole 6a In.In simple terms, above-mentioned universal wheel steering, locking mechanism can correspondingly switch its locking with the switching in the direction ejector sleeve 1b Universal wheel, such as when ejector sleeve 1b is by turning to rear side on front side of cart, the universal wheel on front side of cart can unlock simultaneously, and on rear side of cart Universal wheel will be locked up.It should be pointed out that since above-mentioned universal wheel steering, locking mechanism and ejector sleeve 1b link, along with system Motivation structure be between part relatively turnable in steering wheel group (wheel carrier 2a and wheel carrier mounting base 2c) by hook portion 3d1 with Barb 3e1 transmits brake force, and so, above-mentioned baby stroller can also realize that an other existing trolleys do not have Standby new function, that is, no longer need to release braking after ejector sleeve 1b commutation, reason is: assuming that before ejector sleeve 1b commutation, Rear side steering wheel group is in the state that cannot be turned to by universal wheel steering, locking mechanism locking, while user passes through brake Structure has checked aforementioned rear side steering wheel group, to carry out direction as reference direction, after ejector sleeve 1b commutation, and the rear side checked before Steering wheel group has transformed on front side of cart, while universal wheel steering, locking mechanism corresponding to the steering wheel group commutates with ejector sleeve 1b And unlock, at this moment push cart that aforementioned universal wheel is turned to, hook portion 3d1 will be generated in the vertical direction with barb 3e1 Dislocation, and under the rebound effect of brake pin reset components 3g, brake pin 3c will be moved and be driven down along yoke 2a1 Driving member 3e resets, and then brake pin 3c abjection from brake tooth socket 3b is driven to release braking, as the barb 3e1 of driving member 3e After moving down to below the hook portion 3d1 of brake hook 3d, barb 3e1 is completely disengaged with hook portion 3d1, and the two is each other not There are any interference, and at this moment it is just capable of free rotation to transform to the universal wheel on front side of cart for this.

Structure as one preferred, in the above-described embodiments, ejector sleeve locking component include being arranged in as shown in figs. 9-10 The first pin 7a on foot tube 1c is equipped with latch 7b and latch reset portion shown in Figure 21-22 in the bottom end of ejector sleeve 1b Part 7c(for example can be reset spring shown in Figure 22), latch 7b and ejector sleeve 1b is slidably connected and only can be along ejector sleeve 1b's Axis direction moves back and forth, and latch bracing wire 7d is equipped in ejector sleeve 1b, is also equipped with unlocking part 7e, solution lock section on ejector sleeve 1b Part 7e is slidably connected with ejector sleeve 1b and can move back and forth along the axis direction of ejector sleeve 1b, and the bottom end of latch bracing wire 7d connects locking The top of block 7b, latch bracing wire 7d connect unlocking part 7e, and the bottom end of latch 7b is offered to be matched with the first pin 7a Spacing breach 7b1.

When up pulling unlocking part 7e(unlocking part 7e to can be plastic pull handle shown in figure along ejector sleeve 1b, Other structures form can be used) when, unlocking part 7e pulls latch 7b along the axis of ejector sleeve 1b by latch bracing wire 7d Line up moves, while latch reset components 7c generates flexible deformation, and the first pin 7a's blocked originally in the bottom end latch 7b Spacing breach 7b1 realizes unlock far from the first pin 7a；And after unclamping unlocking part 7e, latch reset components 7c's Under rebound effect, latch 7b moves down along the axis direction of ejector sleeve 1b, and latch 7b is pulled by latch bracing wire 7d Axis direction of the unlocking part 7e also along ejector sleeve 1b moves down, and latch 7b moves down to it along the axis direction of ejector sleeve 1b When the spacing breach 7b1 of bottom end blocks the first pin 7a, ejector sleeve 1b is locked up.

Further, the first connector 5a, the second connector 5b shown in Figure 10 and third connector 5c pass through same hinged point articulated Together, seat support 4 is connect by the second turning joint 8 shown in Fig. 1 with the first connector 5a and the second connector 5b, wherein the The structure of two turning joints 8 is as shown in Figure 23 comprising pedestal 8a and sliding seat 8b, pedestal 8a connect with the first connector 5a and second Head 5b is hinged, and sliding seat 8b is mounted on pedestal 8a and is restricted to only move up and down relative to pedestal 8a, and seat support 4 wraps Foldable guardrail 4a(is included as shown in Figure 1, guardrail 4a is for keeping off in baby front), as shown in Figure 11-12, the end of guardrail 4a It is fixedly connected with the 4th connector 8c, the 4th connector 8c is hinged on sliding seat 8b and can be locked up, in addition, the baby stroller is also Positional relationship and connection structure including foot tube lockable mechanism, between foot tube lockable mechanism and foot tube 1c and the second turning joint 8 As shown in Figure 11-14 and Figure 23-27, specifically, aforementioned foot tube lockable mechanism includes being fixed at two groups of front and back foot tube 1c On the second pin 9a, the bottom of sliding seat 8b is equipped with the locking mouth 8b1 matched with the second pin 9a, passes through locking mouth 8b1 Blocking the second pin 9a prevents the two groups of foot tube 1c in front and back from collapsing toward centre, is also equipped on pedestal 8a for preventing sliding seat 8b past The sliding seat locking component of upper movement, the 4th connector 8c are equipped with sliding seat unlocking structure, and the 4th is driven when 4 folding of seat support Connector 8c rotation, during the 4th connector 8c rotation, sliding seat unlocking structure pushes sliding seat locking component mobile and solves Except the locking to sliding seat 8b, the sliding seat 8b after unlock is up mentioned, locking mouth 8b1 can be released far from the second pin 9a To the locking of foot tube 1c.

Wherein, sliding seat locking component includes locking hook 8d, and locking hook 8d is connect with pedestal 8a and can be sold by pin shaft Axis is central spindle overturning, and the bottom end of locking hook 8d is equipped with fastener 8d1, offers the button hole matched with fastener 8d1 on sliding seat 8b It is additionally provided with locking hook reset spring 8e on 8b2, pedestal 8a, locking hook is pushed by the rebound of locking hook reset spring 8e itself 8d, so that fastener 8d1 is stuck in button hole 8b2.

Wherein, sliding seat unlocking structure includes the driving face 8c1 being arranged on the 4th connector 8c, driving face 8c1's Lower section is equipped with push rod 8f, and push rod 8f is movably connected on sliding seat 8b and is restricted to only move up and down relative to sliding seat 8b, The top of push rod 8f abuts against driving face 8c1, and the bottom end of push rod 8f and the top of locking hook 8d are equipped with mutually identical inclined-plane, preceding The axis parallel of inclined-plane and pin shaft is stated, the inclined-plane of the bottom end push rod 8f abuts against the inclined-plane on the top locking hook 8d, driving face 8c1 starting point Distance away from the 4th connector 8c hinge joint is less than distance of its terminal away from the 4th connector 8c hinge joint.

The working principle of above-mentioned foot tube lockable mechanism are as follows: the 4th connector 8c rotation, In will be driven when 4 folding of seat support During 4th connector 8c is rotated, the position that driving face 8c1 pushes against the top push rod 8f is gradually moved to terminal by its starting point, Driving face 8c1 pushes push rod 8f to move down, and brings pressure to bear on locking hook by the inclined-plane of its bottom end when push rod 8f is moved down The inclined-plane on the top 8d compresses locking hook reset spring 8e after locking hook 8d stress and is central spindle overturning using pin shaft, so that fastener 8d1 Deviate from from button hole 8b2, realize foot tube 1c unlock, at this moment two groups of foot tube sides 1c can be collapsed toward centre.It is noted that above-mentioned foot Pipe lockable mechanism can not be unlocked before the non-folding of guardrail 4a, can better ensure that safety in utilization in this way.

Generally speaking, the more existing cart of baby stroller according to the present invention has the advantage that 1, universal wheel dismounts Conveniently, arrestment mechanism can realize synchronous braking and functional reliability is higher.2, implementation capable of reversing, and can allow side ten thousand after commutation To the steering automatic locking of wheel, and the steering automatic unlocking of other side universal wheel, while originally by the ten thousand of brake before commutating Also braking can be released by allowing and universal wheel turns to when carrying out to wheel group, above-mentioned locking and unlocking process without using person separately Manual operation.3, the non-folding front foot pipe lockable mechanism of seat support 4 can not unlock, and can better ensure that safety.4, due to pushing away Universal wheel is all used after Chinese herbaceous peony, front-rear direction can all be carried out, and the assembly working of cart also becomes simpler.

Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way, In Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.

In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.