WO2021052161A1 - Baby stroller - Google Patents

Abstract

A baby stroller, comprises a braking mechanism; the braking mechanism comprises brake teeth (3a) provided on a side surface of a wheel (2b), brake tooth grooves (3b) being formed between two adjacent brake teeth (3a); a brake pin (3c) provided at one side of a fork arm (2a1) close to the wheel (2b), the brake pin (3c) being movable upward along the fork arm (2a1) to be clamped into the brake tooth groove (3b); a brake hook (3d) mounted on a wheel carrier mounting base (2c) and movable relative to the wheel carrier mounting base (2c), the brake hook (3d) being provided with a hook portion (3d1); a transmission member (3e) mounted on a wheel carrier (2a) and movable relative to the wheel carrier (2a); a driving member (3f) mounted on a stroller frame (1) or the wheel carrier mounting base (2c) and connected to the brake hook (3d); a brake pin reset component (3g) mounted on the wheel carrier (2a) and capable of pushing, by means of the rebound force thereof, the brake pin (3c) to reset and driving the transmission member (3e) to reset; and a brake hook reset component (3h) mounted on the wheel carrier mounting base (2c) and capable of pushing, by means of the rebound force thereof, the brake hook (3d) to reset. The casters of the baby stroller can all be universal wheels, having the advantages of being convenient to assemble and disassemble and being able to brake synchronously.

Description

一种婴儿手推车A kind of baby stroller 技术领域Technical field

本发明涉及婴童用品技术领域，特别涉及一种婴儿手推车。The invention relates to the technical field of baby products, in particular to a baby stroller.

背景技术Background technique

近些年来，随着经济的发展，婴儿手推车已逐渐普及，人们对于手推车的使用便利性与安全性要求越来越高。例如某些国家强制规定市场销售的婴儿手推车必须能够实现同步制动，即用户在单次踩踏刹车时能同时刹住两个后轮(手推车行业内称之为“单踩双刹”)。对于固定轮而言，实现同步制动非常容易，但对于万向轮而言，必须依靠巧妙的结构设计才能同时兼顾自由转向和同步制动。In recent years, with the development of the economy, baby strollers have gradually become popular, and people have increasingly higher requirements for the convenience and safety of the strollers. For example, some countries mandate that baby strollers sold on the market must be able to achieve synchronous braking, that is, the user can brake two rear wheels at the same time when a single step on the brake (called "single step and double brake" in the trolley industry). For fixed wheels, it is very easy to achieve synchronous braking, but for universal wheels, it is necessary to rely on clever structural design to take into account both free steering and synchronous braking.

中国专利文献“CN203528569U”公开了一种可用于万向轮的联动刹车机构，其通过牵引索带动左右两轮上的刹车机构联动刹车，牵引索采用多段结构，在车轮与固定架发生相对转动的部位，两段牵引索通过转接头实现彼此间的可转动连接，从而兼顾了万向轮的自由转向和同步制动。虽然该专利解决了万向轮难以同时兼顾自由转向和同步制动的问题，但是需要指出的是，当上述联动刹车机构应用于婴儿手推车上时，由于其联动刹车结构的限制，万向轮拆装不便，为便于消费者使用，出厂时通常需要事先将万向轮安装在轮组固定座上，不便于节省物流运输空间。The Chinese patent document "CN203528569U" discloses a linkage brake mechanism that can be used for universal wheels. The brake mechanism on the left and right wheels is driven by a traction cable to perform linkage braking. The traction cable adopts a multi-section structure, and the wheel and the fixed frame rotate relative to each other. In this position, the two sections of traction cable are rotatably connected to each other through the adapter, thereby taking into account the free steering and synchronous braking of the universal wheel. Although this patent solves the problem that it is difficult for the universal wheel to balance free steering and synchronous braking at the same time, it should be pointed out that when the above-mentioned linkage brake mechanism is applied to a stroller, due to the limitation of the linkage brake structure, the universal wheel is removed. It is inconvenient to install. For the convenience of consumers, it is usually necessary to install the universal wheel on the wheel fixing seat before leaving the factory, which is inconvenient to save logistics and transportation space.

中国专利文献“CN108820029A”公开了一种可用于万向轮组且可拆卸的婴儿车同步制动机构，该同步制动机构通过传动组件实现将两个车轮所对应的刹车推块同步往下压，刹车推块往下移动时再推动位于其下方的刹车销，刹车销受压后发生转动，使得其靠近刹车齿的一端从叉架中伸出并***刹车齿的齿槽内，从而实现同步制动。由于该同步制动机构中的刹车销是从叉架中伸出的，那么叉架本体的侧壁上应当要开设与刹车销相适应的孔洞，这样在刹车销发生转动时，其靠近刹车齿的一端就可以侧向伸出，进而***刹车齿的齿槽中完成刹车。应当指出，该可用于万向轮组的同步制动机构解决了文献“CN203528569U”中万向轮拆装不便的问题，但不可忽视的是，由于叉架本体上开设的孔洞靠近车轮，在手推车日常使用过程中，一些细小的石子等异物容易卡入孔洞中，从而导致刹车销不能正常伸出，影响了制动机构的可靠性。Chinese patent document "CN108820029A" discloses a detachable synchronous brake mechanism for a baby stroller that can be used for universal wheel sets. The synchronous brake mechanism realizes synchronously pressing down the brake push blocks corresponding to the two wheels through a transmission assembly. , When the brake push block moves down, it pushes the brake pin below it, and the brake pin rotates after being pressed, so that the end close to the brake tooth protrudes from the fork and is inserted into the tooth groove of the brake tooth to achieve synchronization brake. Since the brake pin in the synchronous brake mechanism protrudes from the fork, the side wall of the fork body should be provided with a hole suitable for the brake pin, so that when the brake pin rotates, it is close to the brake tooth One end can be extended laterally, and then inserted into the tooth groove of the brake tooth to complete the brake. It should be pointed out that the synchronous braking mechanism that can be used for universal wheel sets solves the problem of inconvenient disassembly and assembly of universal wheels in the document "CN203528569U". In the process of daily use, some small stones and other foreign objects are easy to get stuck in the hole, which causes the brake pin to not extend normally, which affects the reliability of the brake mechanism.

发明内容Summary of the invention

针对现有技术存在的问题，本发明提供一种万向轮可拆装并且制动可靠性更高的 婴儿手推车。In view of the problems existing in the prior art, the present invention provides a baby stroller with a removable universal wheel and higher braking reliability.

为了解决上述技术问题，本发明采用如下技术方案：一种婴儿手推车，包括车架、万向轮组、制动机构及座椅支架，所述万向轮组包括轮架、安装在所述轮架的叉臂上的车轮以及固定设置在车架底部的轮架安装座，所述轮架与轮架安装座可拆卸连接且轮架可相对于轮架安装座在水平面内自由转动，所述制动机构包括：In order to solve the above technical problems, the present invention adopts the following technical solutions: a baby stroller includes a frame, a universal wheel set, a braking mechanism and a seat bracket, the universal wheel set includes a wheel frame, and is mounted on the wheel The wheels on the fork arms of the frame and the wheel frame mounting seat fixedly arranged at the bottom of the frame, the wheel frame and the wheel frame mounting seat are detachably connected, and the wheel frame can freely rotate in a horizontal plane relative to the wheel frame mounting seat. The braking mechanism includes:

刹车齿，设置在所述车轮的侧面，在相邻的两个刹车齿之间形成刹车齿槽；The brake teeth are arranged on the side of the wheel, and a brake tooth groove is formed between two adjacent brake teeth;

刹车销，设于所述叉臂靠近车轮的一侧，所述刹车销可沿着叉臂往上运动卡入刹车齿槽中并可沿着叉臂往下运动从刹车齿槽中脱出；The brake pin is arranged on the side of the fork arm close to the wheel, and the brake pin can move upward along the fork arm into the brake tooth groove and move down along the fork arm to escape from the brake tooth groove;

刹车挂钩，安装在所述轮架安装座上并可相对于轮架安装座运动，所述刹车挂钩设有钩挂部；The brake hook is mounted on the wheel frame mounting seat and can move relative to the wheel frame mounting seat, and the brake hook is provided with a hooking portion;

传动件，安装在所述轮架上并可相对于轮架运动，所述传动件用于带动刹车销运动并设有与钩挂部的形状相配合的倒钩部，所述倒钩部位于钩挂部上方并间隔一段距离；The transmission part is installed on the wheel frame and can move relative to the wheel frame. The transmission part is used to drive the brake pin to move and is provided with a barb part that matches the shape of the hook part, and the barb part is located at Above the hook part and spaced a certain distance;

驱动件，安装在所述车架或轮架安装座上并且连接刹车挂钩；The driving part is installed on the frame or wheel frame mounting seat and connected with the brake hook;

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所述刹车销复位并带动传动件复位；The brake pin reset component is installed on the wheel frame and can use its own resilience to push the brake pin to reset and drive the transmission component to reset;

刹车挂钩复位部件，安装在所述轮架安装座上，可利用其自身的回弹力推动所述刹车挂钩复位；The brake hook reset component is installed on the wheel carrier mounting seat, and can use its own resilience to push the brake hook to reset;

所述驱动件施加拉力带动刹车挂钩运动时，所述刹车挂钩复位部件产生弹性变形，所述刹车挂钩的钩挂部往上钩住传动件的倒钩部并带动传动件运动，所述传动件运动时带动刹车销沿着叉臂往上运动并使得刹车销复位部件产生弹性变形，所述刹车销卡入刹车齿槽中实现制动；所述驱动件施加的拉力撤消后，所述刹车挂钩复位部件的回弹力推动刹车挂钩往下运动复位，所述刹车销复位部件的回弹力推动刹车销沿着叉臂往下运动并带动传动件复位，所述刹车销从刹车齿槽中脱出，制动解除。When the driving member exerts a pulling force to drive the brake hook to move, the brake hook restoring component is elastically deformed, and the hook portion of the brake hook hooks up the barb portion of the transmission member and drives the transmission member to move, and the transmission member moves When driving the brake pin to move upward along the fork arm and make the brake pin resetting part elastically deform, the brake pin is locked into the brake tooth groove to achieve braking; after the pulling force applied by the driving part is removed, the brake hook is reset The resilient force of the component pushes the brake hook to move down to reset, and the resilient force of the brake pin reset component pushes the brake pin to move down along the fork arm and drives the transmission member to reset. The brake pin comes out of the brake tooth groove and brakes Lifted.

优选地，前述所述制动机构还包括滑套，所述滑套环套住叉臂，所述刹车销固定连接在滑套靠近车轮的一侧，所述传动件设有用于提拉滑套的提拉部，所述刹车挂钩带动传动件运动时，所述提拉部往上提拉滑套，使得所述滑套沿着叉臂往上运动，从而带着所述刹车销沿着叉臂往上运动并卡入刹车齿槽中。Preferably, the aforementioned braking mechanism further includes a sliding sleeve, the sliding sleeve ring sleeves the fork arm, the brake pin is fixedly connected to the side of the sliding sleeve close to the wheel, and the transmission member is provided with a sliding sleeve for lifting When the brake hook drives the transmission member to move, the lifting part pulls the sliding sleeve upward so that the sliding sleeve moves upward along the fork arm, thereby bringing the brake pin along the fork The arm moves up and snaps into the brake tooth groove.

进一步地，所述传动件为摆臂，所述摆臂的一端设置铰接点并于该铰接点处与轮架铰接，所述提拉部为设于摆臂另一端的柱销，所述滑套的顶端设有翻边，所述翻边位于柱销的上方，所述倒钩部设于前述铰接点与柱销之间，所述刹车挂钩的钩挂部钩住倒钩部往上提拉时，所述摆臂绕其与轮架的铰接点转动，所述柱销钩住滑套顶端的翻边并往上提拉， 从而使得所述滑套沿着叉臂往上运动。Further, the transmission member is a swing arm, one end of the swing arm is provided with a hinge point and is hinged with the wheel frame at the hinge point, the lifting part is a pin provided at the other end of the swing arm, and the sliding The top of the sleeve is provided with a flanging, the flanging is located above the pin, the barb part is arranged between the aforementioned hinge point and the pin, and the hook part of the brake hook hooks the barb part and lifts upward When pulled, the swing arm rotates around its hinge point with the wheel frame, and the pin hooks the flange at the top of the sliding sleeve and pulls it upward, so that the sliding sleeve moves upward along the fork arm.

其中，所述车架还包括两根横管，每根横管的两端分别连接位于其左侧和右侧的轮架安装座，所述驱动件包括制动拉线以及通过制动拉线间接连接刹车挂钩的刹车踏板，所述两根横管上均安装有刹车踏板，所述刹车踏板可相对于横管转动；Wherein, the frame further includes two horizontal tubes, the two ends of each horizontal tube are respectively connected to the wheel frame mounting seats on the left and right sides of the horizontal tube, and the driving part includes a brake cable and indirectly connected through the brake cable For the brake pedal of the brake hook, a brake pedal is installed on the two horizontal pipes, and the brake pedal can rotate relative to the horizontal pipe;

刹车时，踩踏所述刹车踏板使其相对于横管转动，此时所述刹车踏板拉扯制动拉线，所述制动拉线往上提拉刹车挂钩。When braking, step on the brake pedal to make it rotate relative to the horizontal tube. At this time, the brake pedal pulls the brake cable, and the brake cable pulls the brake hook upward.

更进一步地，所述驱动件还包括定向拉动销，所述制动拉线通过定向拉动销与刹车踏板间接连接，所述刹车踏板包括可拆卸连接在一起的上壳体和下壳体，所述横管从上壳体和下壳体之间的空隙中穿过，所述上壳体和下壳体的内壁靠近横管的外周面，所述上壳体的内壁上设有两个第一斜槽，所述下壳体的内壁上设有两个第二斜槽，所述第一斜槽在水平面上的投影与位于其正下方的第二斜槽在水平面上的投影呈一定夹角交叉，所述横管上间隔开设有两个起导向作用的长孔，所述长孔沿左右方向延伸并竖向贯穿横管，每个长孔中均穿设有一根定向拉动销，每根横管中穿设有两根制动拉线，每根制动拉线的两端分别连接一个定向拉动销和一个刹车挂钩，每根定向拉动销的两端均从长孔中伸出并对应***一个第一斜槽和一个第二斜槽中；Further, the driving member further includes a directional pulling pin, the brake cable is indirectly connected to the brake pedal through the directional pulling pin, and the brake pedal includes an upper shell and a lower shell that are detachably connected together. The horizontal tube passes through the gap between the upper shell and the lower shell. The inner walls of the upper shell and the lower shell are close to the outer circumferential surface of the horizontal tube. The inner wall of the upper shell is provided with two first An oblique groove, two second oblique grooves are provided on the inner wall of the lower casing, and the projection of the first oblique groove on the horizontal plane and the projection of the second oblique groove directly below it on the horizontal plane form a certain angle Cross, the horizontal tube is provided with two long holes for guiding at intervals, the long holes extend in the left-right direction and vertically penetrate the horizontal tube, each long hole is penetrated with a directional pulling pin, each Two brake cables are pierced in the horizontal tube. The two ends of each brake cable are respectively connected with a directional pulling pin and a brake hook. Both ends of each directional pulling pin extend from the elongated hole and insert a corresponding one. In a first chute and a second chute;

刹车时，踩踏所述刹车踏板使其相对于横管转动，此时所述第一斜槽和第二斜槽的侧壁一起推抵定向拉动销的外周面并带动定向拉动销在长孔中移动，两根定向拉动销在长孔中相向移动的过程中各自拉扯与其连接的制动拉线，通过两根制动拉线同时往上提拉刹车挂钩来实现左右两侧的车轮同步制动。When braking, step on the brake pedal to rotate relative to the horizontal tube. At this time, the side walls of the first chute and the second chute push against the outer peripheral surface of the directional pulling pin and drive the directional pulling pin to move in the long hole. When the two directional pulling pins move towards each other in the long hole, each pulls the brake cable connected to it, and the two brake cables simultaneously pull the brake hook up to achieve synchronous braking of the wheels on the left and right sides.

其中，所述车架包括一组推管以及交叉设置在推管下方的两组脚管，所述推管的顶端连接推把，所述轮架安装座固定连接在脚管的底部，所述推管通过第一活动关节与脚管连接，所述第一活动关节包括分别连接在两组脚管顶端的第一接头和第二接头以及固定连接于推管的第三接头，所述第一接头与第二接头连接，所述第三接头铰接于第一接头和/第二接头并以铰接点作为转动轴心，所述两组脚管上均设有用于锁止推管的推管锁止部件，所述推管被解锁释放后，将所述推管从推车的一侧转动至另一侧可以变换推车的推行方向。Wherein, the frame includes a set of push pipes and two sets of leg pipes intersectingly arranged under the push pipes, the top end of the push pipe is connected to the push handle, and the wheel frame mounting seat is fixedly connected to the bottom of the leg pipe. The push tube is connected to the foot tube through a first movable joint. The first movable joint includes a first joint and a second joint respectively connected to the top ends of the two sets of foot tubes, and a third joint fixedly connected to the push tube. The joint is connected to the second joint, the third joint is hinged to the first joint and/or the second joint and the hinge point is used as the rotation axis, and the two sets of leg tubes are provided with push tube locks for locking the push tube After the push tube is unlocked and released, the push tube can be rotated from one side of the trolley to the other side to change the pushing direction of the trolley.

更进一步地，前述婴儿手推车还包括万向轮转向锁止机构，所述万向轮转向锁止机构包括锁止孔、锁止销、锁止销复位部件及定向拉动块，所述锁止孔开设在轮架上，所述锁止销设置在轮架安装座中并可从轮架安装座底端伸出再往下***锁止孔中，所述锁止销复位部件设置在轮架安装座中并可依靠其自身的回弹力推动锁止销往下复位，所述脚管中设有可沿其轴线方向移动的定向拉动块，所述脚管中还穿设用于连接锁止销和定向拉动块 的锁止销拉线，所述定向拉动块上设有传动销，所述第三接头的内侧设有导槽，所述导槽包括第一释放段、第二释放段以及处于第一释放段和第二释放段之间并于前述二者相连的提拉段，所述第一释放段及第二释放段的导向面与第三接头转动轴心之间的距离大于提拉段的导向面与第三接头转动轴心之间的距离，所述传动销伸入导槽中；Furthermore, the aforementioned baby stroller further includes a universal wheel steering locking mechanism, the universal wheel steering locking mechanism including a locking hole, a locking pin, a locking pin reset component and a directional pulling block, the locking hole The locking pin is arranged on the wheel frame, the locking pin is arranged in the wheel frame mounting seat and can be extended from the bottom end of the wheel frame mounting seat and then inserted into the locking hole down, and the locking pin reset component is arranged on the wheel frame mounting seat In the seat, the locking pin can be pushed down to reset by its own resilience, the leg tube is provided with a directional pulling block that can move along its axis, and the leg tube is also penetrated for connecting the locking pin And the locking pin pull wire of the directional pulling block, the directional pulling block is provided with a drive pin, the inner side of the third joint is provided with a guide groove, and the guide groove includes a first release section, a second release section, and a second release section. A lifting section between a release section and a second release section and connected to the foregoing two, the distance between the guiding surfaces of the first release section and the second release section and the rotation axis of the third joint is greater than that of the lifting section The distance between the guide surface of the third joint and the axis of rotation of the third joint, the drive pin extends into the guide groove;

当转动所述推管并带动第三接头转动到被推管锁止部件锁止的位置时，所述提拉段的导向面往上提拉其中一组脚管中定向拉动块的传动销，使得该定向拉动块所连接的锁止销拉线往上提拉并将与其连接的锁止销从锁止孔中抽出，同时另一组脚管中所设置的定向拉动块的传动销位于导槽的第一释放段或第二释放段中，当与该定向拉动块通过锁止销拉线连接的锁止销同其下方轮架所开设的锁止孔对齐时，该锁止销被与其对应的锁止销复位部件的回弹力往下推动并***锁止孔中。When the push tube is rotated and the third joint is driven to rotate to the position locked by the push tube locking component, the guide surface of the pulling section pulls up the drive pin of the directional pulling block in one of the leg tubes, The locking pin cable connected to the directional pulling block is pulled upward and the locking pin connected to it is pulled out from the locking hole, while the drive pin of the directional pulling block provided in the other set of leg tubes is located in the guide groove In the first release section or the second release section, when the locking pin connected to the directional pulling block through the locking pin pull line is aligned with the locking hole opened in the lower wheel frame, the locking pin is corresponding to it The resilient force of the locking pin reset component pushes down and inserts it into the locking hole.

其中，所述推管锁止部件包括设置在脚管上的第一销钉，所述推管的底端安装有锁止块及锁止块复位部件，所述锁止块与推管滑动连接且仅可沿推管的轴线方向来回移动，所述推管中穿设有锁止块拉线，所述推管上还安装有解锁部件，所述解锁部件与推管滑动连接并可沿推管的轴线方向来回移动，所述锁止块拉线的底端连接锁止块，所述锁止块拉线的顶端连接解锁部件，所述锁止块的底端开设有与第一销钉相配合的限位缺口；Wherein, the push tube locking component includes a first pin provided on the leg tube, a locking block and a locking block resetting component are installed at the bottom end of the push tube, and the locking block is slidably connected to the push tube and It can only move back and forth along the axial direction of the push tube. The push tube is provided with a locking block pull line. The push tube is also equipped with an unlocking component that is slidably connected to the push tube and can move along the push tube. Moving back and forth in the axial direction, the bottom end of the locking block cable is connected to the locking block, the top end of the locking block cable is connected to the unlocking component, and the bottom end of the locking block is provided with a limiter that cooperates with the first pin gap;

沿所述推管往上拉动解锁部件时，所述解锁部件通过锁止块拉线拉动锁止块沿着推管的轴线往上移动，同时所述锁止块复位部件产生弹性变形，所述锁止块底端原本卡住第一销钉的限位缺口远离第一销钉，实现解锁；松开所述解锁部件后，在所述锁止块复位部件的回弹力作用下，所述锁止块沿推管的轴线方向往下移动，所述锁止块通过锁止块拉线拉动解锁部件也沿推管的轴线方向往下移动，所述锁止块沿推管的轴线方向往下移动至其底端的限位缺口卡住第一销钉时，所述推管被锁止。When the unlocking component is pulled up along the push tube, the unlocking component pulls the locking block to move upwards along the axis of the push tube through the locking block pull line, and at the same time the locking block resetting component is elastically deformed, and the lock The limit notch at the bottom of the stop block that originally clamped the first pin is far away from the first pin to achieve unlocking; after the unlocking part is released, under the action of the resilient force of the locking block resetting part, the locking block is The push tube moves downward in the axial direction, the locking block pulls the unlocking member through the locking block pull wire and also moves downward along the push tube axial direction, and the locking block moves downward along the push tube axial direction to its bottom. When the limiting notch at the end clamps the first pin, the push tube is locked.

进一步地，所述第一接头、第二接头及第三接头通过同一铰接点铰接在一起，所述座椅支架通过第二活动关节与第一接头及第二接头连接，所述第二活动关节包括底座及活动座，所述底座与第一接头及第二接头铰接，所述活动座安装在底座上并被限制为仅可相对于底座上下移动，所述座椅支架包括可收折的护栏，所述护栏的端头固定连接有第四接头，所述第四接头铰接在活动座上并可被锁止，该婴儿手推车还包括脚管锁止机构；Further, the first joint, the second joint, and the third joint are hinged together through the same hinge point, the seat bracket is connected to the first joint and the second joint through a second movable joint, and the second movable joint It includes a base and a movable seat, the base is hinged with the first joint and the second joint, the movable seat is mounted on the base and is restricted to only move up and down relative to the base, and the seat bracket includes a foldable guardrail , The end of the guardrail is fixedly connected with a fourth joint, the fourth joint is hinged on the movable seat and can be locked, and the baby stroller further includes a foot tube locking mechanism;

所述脚管锁止机构包括固定设置在前后两组脚管上的第二销钉，所述活动座的底部设有与第二销钉相配合的锁止口，通过所述锁止口卡住第二销钉阻止前后两组脚管往中间收拢，所述底座上还安装有用于阻止活动座往上移动的活动座锁止部件，所述第四接头上设有活动座解锁结构，所述座椅支架收折时带动第四接头转动，在所述第四接头转动的过程中，所述活动座解锁结构推动活动座锁止部件移动并解除对活动座的锁止，将解锁后的活 动座往上提，让所述锁止口远离第二销钉即可解除对脚管的锁止。The leg tube locking mechanism includes a second pin fixedly arranged on the front and rear two sets of leg tubes. The bottom of the movable seat is provided with a locking opening that cooperates with the second pin, and the second pin is locked by the locking opening. The two pins prevent the two sets of front and rear legs from being folded in the middle. The base is also equipped with a movable seat locking component for preventing the movable seat from moving upwards. The fourth joint is provided with a movable seat unlocking structure. The seat When the bracket is folded, the fourth joint is driven to rotate. During the rotation of the fourth joint, the movable seat unlocking structure pushes the movable seat locking component to move and unlocks the movable seat, and moves the unlocked movable seat to Lift up and let the locking opening be far away from the second pin to unlock the leg tube.

其中，所述活动座锁止部件包括锁止钩，所述锁止钩通过销轴与底座连接并可以销轴为轴芯翻转，所述锁止钩的底端设有钩扣，所述活动座上开设有与钩扣相配合的扣孔，所述底座上还设有锁止钩复位弹簧，通过所述锁止钩复位弹簧自身的回弹力推住锁止钩，使得所述钩扣卡在扣孔中；Wherein, the movable seat locking component includes a locking hook, the locking hook is connected to the base through a pin shaft and can be turned over with the pin shaft as a shaft core, the bottom end of the locking hook is provided with a hook, the movable The seat is provided with a buckle hole that cooperates with the hook, and the base is also provided with a locking hook reset spring. The locking hook is pushed by the resilient force of the locking hook reset spring itself, so that the hook is locked. In the buttonhole

所述活动座解锁结构包括设置在第四接头上的传动面，所述传动面的下方设有推杆，所述推杆活动连接于活动座且被限制为仅可相对于活动座上下移动，所述推杆的顶端抵靠住传动面，所述推杆的底端及锁止钩的顶端设有相互吻合的斜面，所述斜面与销轴的轴心平行，所述推杆底端的斜面抵靠住锁止钩顶端的斜面，所述传动面起点距第四接头铰接点的距离小于其终点距第四接头铰接点的距离；The movable seat unlocking structure includes a transmission surface arranged on the fourth joint, and a push rod is arranged below the transmission surface, and the push rod is movably connected to the movable seat and is restricted to only move up and down relative to the movable seat, The top end of the push rod abuts against the transmission surface, the bottom end of the push rod and the top end of the locking hook are provided with inclined surfaces that coincide with each other, and the inclined surface is parallel to the axis of the pin shaft. Against the inclined surface of the top end of the locking hook, the distance between the starting point of the transmission surface and the hinge point of the fourth joint is less than the distance between its end point and the hinge point of the fourth joint;

所述座椅支架收折时带动第四接头转动，在所述第四接头转动的过程中，所述传动面推抵住推杆顶端的位置逐渐由其起点移动到终点，所述传动面推动推杆往下移动，所述推杆往下运动时通过其底端的斜面施加压力于锁止钩顶端的斜面，所述锁止钩受力后压缩锁止钩复位弹簧并以销轴为轴芯翻转，使得所述钩扣从扣孔脱出。When the seat bracket is folded, the fourth joint is driven to rotate. During the rotation of the fourth joint, the position where the transmission surface pushes against the top end of the push rod gradually moves from its starting point to the end point, and the transmission surface pushes The push rod moves down, and when the push rod moves down, pressure is applied to the inclined surface of the top end of the locking hook through the inclined surface of the bottom end of the push rod. The locking hook compresses the return spring of the locking hook after being forced and takes the pin shaft as the axis core. Turn it over to make the hook come out of the button hole.

首先，本发明通过刹车挂钩上设置的钩挂部与传动件上设置的倒钩部传递制动力，未制动时，钩挂部与倒钩部间隔一段距离，制动机构不会对轮架在水平面内的转动形成约束，万向轮可以自由转向。其次，由于在本发明所涉推车在未制动时，制动机构中位于轮架上的传动件与位于轮架安装座上的刹车挂钩本就处于未连接的断开状态，因此可以很轻松地将轮架与轮架安装座拆分开或者装配到一起，制动机构的存在并不会导致万向轮难以拆装。再次，本发明的制动原理是通过刹车挂钩往上提拉传动件，再由传动件带动刹车销往上移动并卡入刹车齿槽中实现制动，由于前述刹车销在制动过程中仅沿叉臂上下运动，故不需要在叉臂靠近车轮的一侧开设供刹车销伸出的孔洞，也就不会存在孔洞中卡入石子等异物导致刹车销无法正常伸出的情况，制动机构的工作可靠性更高。First, the present invention transmits the braking force through the hook portion provided on the brake hook and the barb portion provided on the transmission member. When the brake is not braked, the hook portion and the barb portion are separated by a certain distance, and the brake mechanism will not interfere with the wheel frame. The rotation in the horizontal plane forms constraints, and the universal wheels can turn freely. Secondly, because when the stroller of the present invention is not braking, the transmission member on the wheel frame in the braking mechanism and the brake hook on the wheel frame mounting seat are in an unconnected and disconnected state, so it can be very The wheel carrier and the wheel carrier mounting seat can be easily separated or assembled together, and the existence of the braking mechanism will not cause the universal wheel to be difficult to disassemble and assemble. Thirdly, the braking principle of the present invention is to pull the transmission member upward through the brake hook, and then the transmission member drives the brake pin to move upward and snap into the brake tooth groove to achieve braking, because the aforementioned brake pin only needs to be braked during the braking process. It moves up and down along the fork arm, so there is no need to open a hole for the brake pin to extend on the side of the fork arm close to the wheel, and there will be no foreign matter such as stones stuck in the hole causing the brake pin to fail to extend normally. The work reliability of the organization is higher.

附图说明Description of the drawings

图1为实施例中婴儿手推车完全展开后的的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of the baby stroller in the embodiment after being fully deployed;

图2为图1所示婴儿手推车处于半折叠状态的整体结构示意图；Figure 2 is a schematic diagram of the overall structure of the baby stroller shown in Figure 1 in a semi-folded state;

图3为图1所示婴儿手推车完全折叠后的整体结构示意图；Fig. 3 is a schematic diagram of the overall structure of the baby stroller shown in Fig. 1 after being completely folded;

图4为制动机构的整体结构示意图；Figure 4 is a schematic diagram of the overall structure of the brake mechanism;

图5为制动机构中各运动部件的连接结构示意图，刹车踏板的下壳体未在图中示出；Figure 5 is a schematic diagram of the connection structure of each moving part in the brake mechanism, and the lower housing of the brake pedal is not shown in the figure;

图6为制动机构中定向拉动销与刹车踏板的下壳体之间的连接结构示意图；Figure 6 is a schematic diagram of the connection structure between the directional pulling pin in the brake mechanism and the lower housing of the brake pedal;

图7为制动机构中定向拉动销与横杆之间的位置关系示意图；Figure 7 is a schematic diagram of the positional relationship between the directional pulling pin and the crossbar in the braking mechanism;

图8为万向轮转向锁止机构的整体结构示意图；Figure 8 is a schematic diagram of the overall structure of the universal wheel steering locking mechanism;

图9为推管处于锁止状态时，其与脚管之间的连接结构示意图；Figure 9 is a schematic diagram of the connection structure between the push tube and the leg tube when the push tube is in a locked state;

图10为图9的分解结构示意图；Fig. 10 is a schematic diagram of an exploded structure of Fig. 9;

图11为脚管锁止机构处于锁止状态时，其整体结构示意图；Figure 11 is a schematic diagram of the overall structure of the foot tube locking mechanism when it is in a locked state;

图12为脚管锁止机构中传动面与推杆之间的连接结构示意图；Figure 12 is a schematic view of the connection structure between the driving surface and the push rod in the leg locking mechanism;

图13为脚管锁止机构处于解锁状态时，其整体结构示意图；Figure 13 is a schematic diagram of the overall structure of the leg locking mechanism when it is in an unlocked state;

图14为锁止钩从扣孔中脱出时，上述二者之间的位置关系示意图，第二活动关节的底座未在图中示出；Figure 14 is a schematic diagram of the positional relationship between the above two when the locking hook comes out of the buckle hole, and the base of the second movable joint is not shown in the figure;

图15为图4中A部位的局部放大图；Figure 15 is a partial enlarged view of part A in Figure 4;

图16为图4中B部位的局部放大图；Figure 16 is a partial enlarged view of part B in Figure 4;

图17为图5中A部位的局部放大图；Figure 17 is a partial enlarged view of part A in Figure 5;

图18为图8中A部位的局部放大图；Figure 18 is a partial enlarged view of part A in Figure 8;

图19为图8中B部位的局部放大图；Figure 19 is a partial enlarged view of part B in Figure 8;

图20为图8中C部位的局部放大图；Figure 20 is a partial enlarged view of part C in Figure 8;

图21为图9中A部位的局部放大图；Figure 21 is a partial enlarged view of part A in Figure 9;

图22为图10中A部位的局部放大图；Figure 22 is a partial enlarged view of part A in Figure 10;

图23为图11中A部位的局部放大图；Figure 23 is a partial enlarged view of part A in Figure 11;

图24为图12中A部位的局部放大图；Figure 24 is a partial enlarged view of part A in Figure 12;

图25为图13中A部位的局部放大图；Figure 25 is a partial enlarged view of part A in Figure 13;

图26为图13中B部位的局部放大图；Figure 26 is a partial enlarged view of part B in Figure 13;

图27为图14中A部位的局部放大图。Fig. 27 is a partial enlarged view of part A in Fig. 14.

图中：In the picture:

1——车架 4——座椅支架 5——第一活动关节1——Frame 4——Seat bracket 5——First movable joint

8——第二活动关节 1a——横管 1b——推管8-second movable joint 1a-horizontal tube 1b-push tube

1c——脚管 1d——推把 2a——轮架1c-leg tube 1d-push handle 2a-wheel frame

2b——车轮 2c——轮架安装座 3a——刹车齿2b——wheel 2c——wheel frame mounting seat 3a——brake tooth

3b——刹车齿槽 3c——刹车销 3d——刹车挂钩3b——Brake tooth groove 3c——Brake pin 3d——Brake hook

3e——传动件 3f——驱动件 3g——刹车销复位部件3e——transmission part 3f——drive part 3g——brake pin reset part

3h——刹车挂钩复位部件 3i——滑套 4a——护栏3h-brake hook reset part 3i-sliding sleeve 4a-guardrail

5a——第一接头 5b——第二接头 5c——第三接头5a-the first joint 5b-the second joint 5c-the third joint

6a——锁止孔 6b——锁止销 6c——锁止销复位部件6a-Locking hole 6b-Locking pin 6c-Locking pin reset part

6d——定向拉动块 6e——锁止销拉线 7a——第一销钉6d-directional pulling block 6e-locking pin cable 7a-first pin

7b——锁止块 7c——锁止块复位部件 7d——锁止块拉线7b-Locking block 7c-Locking block reset part 7d-Locking block cable

7e——解锁部件 8a——底座 8b——活动座7e——Unlocking part 8a——Base 8b——Moving seat

8c——第四接头 8d——锁止钩 8e——锁止钩复位弹簧8c-fourth joint 8d-locking hook 8e-locking hook return spring

8f——推杆 9a——第二销钉 1a1——长孔8f——Push rod 9a——Second pin 1a1——Long hole

2a1——叉臂 3d1——钩挂部 3e1——倒钩部2a1-wishbone 3d1-hook part 3e1-barb part

3e2——提拉部 3f1——制动拉线 3f2——刹车踏板3e2-lifting part 3f1-brake cable 3f2-brake pedal

3f3——定向拉动销 3i1——翻边 5c1——导槽3f3——Directional pulling pin 3i1——Flanging 5c1——Guide groove

6d1——传动销 7b1——限位缺口 8b1——锁止口6d1——Drive pin 7b1——Limit gap 8b1——Lock port

8d1——钩扣 8b2——扣孔 8C1——传动面8d1-hook 8b2-button hole 8C1-drive surface

3f2a——上壳体 3f2b——下壳体 3f2a1——第一斜槽3f2a-upper shell 3f2b-lower shell 3f2a1-first chute

3f2b1——第二斜槽 5c1a——第一释放段 5c1b——第二释放段3f2b1-second chute 5c1a-first release section 5c1b-second release section

5c1c——提拉段。5c1c-Lifting section.

具体实施方式detailed description

为了便于本领域技术人员的理解，下面结合实施例与附图对本发明作进一步的说明，实施方式提及的内容并非对本发明的限定。In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and the drawings, and the content mentioned in the embodiments does not limit the present invention.

在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the position or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a limitation to the present invention.

此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the present invention, "plurality" means two or more than two, unless otherwise specifically defined.

图1-3示出了本发明所涉婴儿手推车的整体结构，整体来看，与已有的婴儿手推车一样，其也包括车架1、万向轮组、制动机构及座椅支架4，其中，万向轮组包括轮架2a、安装在轮架2a的叉臂2a1上的车轮2b以及固定设置在车架1底部的轮架安装座2c，出于防御拆装 以及节省物流运输空间的目的，轮架2a与轮架安装座2c之间采用可拆卸的连接方式，与常见的万向轮组一样，上述轮架2a可相对于轮架安装座2c在水平面内转动。图示婴儿手推车与已有的推车第一个大的不同点在于制动机构的结构，具体见图4-7及图15-17所示，制动机构包括：1、刹车齿3a，该刹车齿3a设置在车轮2b的侧面，在相邻的两个刹车齿3a之间形成有刹车齿槽3b；2、刹车销3c，刹车销3c设于叉臂2a1靠近车轮2b的一侧，刹车销3c可沿着叉臂2a1往上运动卡入刹车齿槽3b中实现制动，此外该刹车销3c也可沿着叉臂2a1往下运动从刹车齿槽3b中脱出，从而解除制动；3、刹车挂钩3d，该刹车挂钩3d安装在所述轮架安装座2c上并可相对于轮架安装座2c运动，刹车挂钩3d设有钩挂部3d1；4、传动件3e，该传动件3e安装在轮架2a上并可相对于轮架2a运动，传动件3e用于带动刹车销3c运动并设有与钩挂部3d1的形状相配合的倒钩部3e1，倒钩部3e1位于钩挂部3d1上方并间隔一段距离；5、驱动件3f，该驱动件3f安装在车架1或轮架安装座2c上并且连接刹车挂钩3d；6、刹车销复位部件3g，该刹车销复位部件3g(例如可以是图中所示的复位弹簧)安装在轮架2a上，可利用其自身的回弹力推动刹车销3c复位并带动传动件3e复位；7、刹车挂钩复位部件3h，该刹车挂钩复位部件3h(例如可以是图中所示的复位弹簧)安装在轮架安装座2c上，可利用其自身的回弹力推动刹车挂钩3d复位。Figures 1-3 show the overall structure of the baby stroller involved in the present invention. On the whole, like the existing baby stroller, it also includes a frame 1, a universal wheel set, a braking mechanism and a seat bracket 4. Among them, the universal wheel set includes a wheel frame 2a, a wheel 2b mounted on the fork arm 2a1 of the wheel frame 2a, and a wheel frame mounting seat 2c fixedly arranged at the bottom of the frame 1, for defensive disassembly and assembly and saving logistics and transportation space For the purpose, the wheel carrier 2a and the wheel carrier mounting seat 2c are connected in a detachable manner. Like a common universal wheel set, the wheel carrier 2a can be rotated in a horizontal plane relative to the wheel carrier mounting seat 2c. The first major difference between the baby stroller shown in the figure and the existing stroller is the structure of the brake mechanism, as shown in Figures 4-7 and 15-17. The brake mechanism includes: 1. Brake teeth 3a. The brake tooth 3a is arranged on the side of the wheel 2b, and a brake tooth groove 3b is formed between two adjacent brake teeth 3a; 2. The brake pin 3c is arranged on the side of the fork arm 2a1 close to the wheel 2b. The pin 3c can move upward along the fork arm 2a1 and snap into the brake tooth groove 3b to achieve braking. In addition, the brake pin 3c can also move downward along the fork arm 2a1 to escape from the brake tooth groove 3b, thereby releasing the brake; 3. Brake hook 3d, the brake hook 3d is mounted on the wheel carrier mounting seat 2c and can move relative to the wheel carrier mounting seat 2c, the brake hook 3d is provided with a hooking portion 3d1; 4. Transmission member 3e, the transmission member 3e is mounted on the wheel carrier 2a and can move relative to the wheel carrier 2a. The transmission member 3e is used to drive the brake pin 3c to move and is provided with a barb portion 3e1 that matches the shape of the hook portion 3d1. The barb portion 3e1 is located on the hook The hanging part 3d1 is above and separated by a certain distance; 5. The driving part 3f is installed on the frame 1 or the wheel frame mounting seat 2c and connected to the brake hook 3d; 6. The brake pin resetting part 3g, the brake pin resetting part 3g (for example, the return spring shown in the figure) is installed on the wheel frame 2a, and can use its own resilience to push the brake pin 3c to reset and drive the transmission member 3e to reset; 7. The brake hook reset component 3h, the brake hook The reset component 3h (for example, the reset spring shown in the figure) is installed on the wheel carrier mounting seat 2c, and can use its own resilience to push the brake hook 3d to reset.

上述制动机构的工作原理为：当驱动件3f施加拉力带动刹车挂钩3d运动时，刹车挂钩复位部件3h受力产生弹性变形，刹车挂钩3d的钩挂部3d1往上钩住传动件3e的倒钩部3e1并带动传动件3e运动，传动件3e运动时带动刹车销3c沿着叉臂2a1往上运动并使得刹车销复位部件3g产生弹性变形，刹车销3c卡入刹车齿槽3b中实现制动。当前述驱动件3f施加的拉力撤消后，刹车挂钩复位部件3h的回弹力将推动刹车挂钩3d往下运动实现复位，同时刹车销复位部件3g的回弹力推动刹车销3c沿着叉臂2a1往下运动并带动传动件3e复位，最终刹车销3c从刹车齿槽3b中脱出，制动解除。The working principle of the above braking mechanism is: when the driving part 3f exerts a pulling force to drive the brake hook 3d to move, the brake hook resetting part 3h is forced to produce elastic deformation, and the hook part 3d1 of the brake hook 3d hooks upwards to the barb of the transmission member 3e The part 3e1 also drives the transmission member 3e to move. When the transmission member 3e moves, it drives the brake pin 3c to move up along the fork arm 2a1 and causes the brake pin reset component 3g to elastically deform, and the brake pin 3c is locked into the brake tooth groove 3b to achieve braking. . When the pulling force exerted by the aforementioned driving member 3f is cancelled, the resilience of the brake hook reset component 3h will push the brake hook 3d to move down to reset, and the resilience of the brake pin reset component 3g pushes the brake pin 3c down along the fork arm 2a1 It moves and drives the transmission member 3e to reset, and finally the brake pin 3c escapes from the brake tooth groove 3b, and the brake is released.

在以上实施例中，推车所采用的制动机构的结构与现有技术完全不同，上述实施例通过在刹车挂钩3d上设置的钩挂部3d1与传动件3e上设置的倒钩部3e1传递制动力，未制动时，钩挂部3d1与倒钩部3e1间隔一段距离，制动机构不会对轮架在水平面内的转动形成约束，万向轮可以自由转向。另外，由于在上述推车在未制动时，制动机构中位于轮架2a上的传动件3e与位于轮架安装座上2c的刹车挂钩3d本就处于未连接的断开状态，因此可以很轻松地将轮架2a与轮架安装座2c拆分开或者装配到一起，制动机构的存在并不会导致万向轮难以拆装。此外，上述制动机构的制动过程是通过刹车挂钩3d往上提拉传动件3e，再由传动件3e带动刹车销3c往上移动并卡入刹车齿槽3b中实现制动，由于刹车销3c在制动过程中仅沿叉臂2a1上下运动，故不需要在叉臂2a1靠近车轮2b的一侧开设供刹车销3c伸 出的孔洞，也就不会存在孔洞中卡入石子等异物导致刹车销3c无法正常伸出的情况，制动机构的工作可靠性更高。In the above embodiment, the structure of the brake mechanism adopted by the stroller is completely different from the prior art. The above embodiment is transmitted through the hook portion 3d1 provided on the brake hook 3d and the barb portion 3e1 provided on the transmission member 3e. When the braking force is not braking, the hooking portion 3d1 and the barb portion 3e1 are separated by a certain distance, the braking mechanism will not restrict the rotation of the wheel frame in the horizontal plane, and the universal wheel can turn freely. In addition, since the above-mentioned cart is not braked, the transmission member 3e located on the wheel frame 2a in the brake mechanism and the brake hook 3d located on the wheel frame mounting seat 2c are originally in an unconnected and disconnected state, so you can The wheel carrier 2a and the wheel carrier mounting seat 2c can be easily separated or assembled together, and the existence of the braking mechanism will not cause the universal wheel to be difficult to disassemble and assemble. In addition, the braking process of the above-mentioned brake mechanism is to pull the transmission member 3e upward through the brake hook 3d, and then the transmission member 3e drives the brake pin 3c to move upward and snap into the brake tooth groove 3b to achieve braking. 3c only moves up and down along the fork arm 2a1 during braking, so there is no need to open a hole for the brake pin 3c to extend on the side of the fork arm 2a1 close to the wheel 2b, and there will be no foreign objects such as stones stuck in the hole. In the case that the brake pin 3c cannot be extended normally, the working reliability of the brake mechanism is higher.

在上述实施例的基础上，实际实施应用时，出于保证刹车销3c与叉臂2a1之间连接可靠性与连接结构紧凑性以及整个制动***工作稳定性的考虑，前述制动机构还可以包括滑套3i，将滑套3i环套住叉臂2a1，刹车销3c则固定连接在滑套3i靠近车轮2b的一侧，在传动件3e设置用于提拉滑套3i的提拉部3e2。当刹车制动时，可以通过刹车挂钩3d带动传动件3e运动，这时传动件3e的提拉部3e2再往上提拉滑套3i，就可使得滑套3i沿着叉臂2a1往上运动，从而通过滑套3i带着刹车销3c沿叉臂2a1往上运动并卡入刹车齿槽3b中实现制动，解除制动的过程与完成制动的过程相反，在此不作赘述。On the basis of the above-mentioned embodiment, in actual application, in order to ensure the reliability of the connection between the brake pin 3c and the fork arm 2a1, the compactness of the connection structure and the working stability of the entire brake system, the aforementioned brake mechanism can also be used The sliding sleeve 3i is included, the sliding sleeve 3i is looped around the fork arm 2a1, the brake pin 3c is fixedly connected to the side of the sliding sleeve 3i close to the wheel 2b, and a lifting part 3e2 for lifting the sliding sleeve 3i is provided on the transmission part 3e . When the brake is applied, the transmission member 3e can be driven by the brake hook 3d to move. At this time, the lifting part 3e2 of the transmission member 3e will lift the sliding sleeve 3i upwards, so that the sliding sleeve 3i can move upward along the fork arm 2a1. Therefore, the brake pin 3c is moved upward along the fork arm 2a1 by the sliding sleeve 3i and locked into the brake tooth groove 3b to achieve braking. The process of releasing the braking is opposite to the process of completing the braking, and will not be repeated here.

同样出于保证制动***结构紧凑性及工作可靠性的考虑，如图所示，前述传动件3e在实际应用时例如可以采用摆臂的结构，在该摆臂的一端设置铰接点并于该铰接点处与轮架2a铰接，至于提拉部3e2则为设于摆臂另一端的柱销，相应地，在滑套3i的顶端设有翻边3i1，翻边3i1位于柱销的上方，倒钩部3e1设于前述铰接点与柱销之间。如此一来，当刹车挂钩3d的钩挂部3d1钩住倒钩部3e1往上提拉时，摆臂会绕其与轮架2a的铰接点转动，此时作为提拉部3e2的柱销将钩住滑套3i顶端的翻边3i1并往上提拉，从而使得滑套3i沿着叉臂2a1往上运动。Also for the sake of ensuring the compactness and working reliability of the braking system, as shown in the figure, the aforementioned transmission member 3e can be used in practical applications, for example, in the structure of a swing arm, and a hinge point is provided at one end of the swing arm and connected to the The hinge point is hinged with the wheel frame 2a. As for the lifting part 3e2, it is a pin provided at the other end of the swing arm. Correspondingly, a flange 3i1 is provided at the top of the sliding sleeve 3i, and the flange 3i1 is located above the pin. The barb portion 3e1 is provided between the aforementioned hinge point and the pin. In this way, when the hook part 3d1 of the brake hook 3d hooks the barb part 3e1 and pulls upward, the swing arm will rotate around its hinge point with the wheel frame 2a. At this time, the pin as the lifting part 3e2 will Hook the flange 3i1 at the top of the sliding sleeve 3i and pull it upward, so that the sliding sleeve 3i moves upward along the fork arm 2a1.

与现有婴儿手推车一样，如图所示，上述实施例所涉及的婴儿手推车的车架1也包括两根横管1a，每根横管1a的两端也是分别连接位于其左侧和右侧的轮架安装座2c，其中，驱动件3f包括制动拉线3f1以及通过制动拉线3f1间接连接刹车挂钩3d的刹车踏板3f2，与常见的婴儿手推车不同的是，图示两根横管1a上均安装有刹车踏板3f2，刹车踏板3f2可相对于横管1a转动，也就是说，在图1-3所示婴儿手推车中，其前后两组脚轮均带有刹车。与现有技术类似，上述婴儿手推车在刹车时，也是通过踩踏刹车踏板3f2使其相对于横管1a转动来实现，刹车踏板3f2被踩下时将拉扯制动拉线3f1，制动拉线3f1将往上提拉刹车挂钩3d，从而带动刹车挂钩3d运动。Like the existing baby stroller, as shown in the figure, the frame 1 of the baby stroller involved in the above embodiment also includes two horizontal tubes 1a, and the two ends of each horizontal tube 1a are also connected to the left and right sides respectively. The wheel carrier mounting seat 2c, wherein the driving member 3f includes a brake cable 3f1 and a brake pedal 3f2 that is indirectly connected to the brake hook 3d through the brake cable 3f1. The difference from the common baby stroller is that the two horizontal tubes 1a are shown in the figure. Both are equipped with a brake pedal 3f2, which can rotate relative to the horizontal tube 1a, that is to say, in the baby stroller shown in Figures 1-3, the two sets of front and rear casters are equipped with brakes. Similar to the prior art, when the baby stroller is braked, it is also achieved by stepping on the brake pedal 3f2 to rotate relative to the horizontal tube 1a. When the brake pedal 3f2 is stepped on, the brake cable 3f1 will be pulled, and the brake cable 3f1 will move toward The brake hook 3d is lifted up to drive the brake hook 3d to move.

作为实现“一踩双刹(即左右轮同步制动)”的一种可选方案，前述驱动件3f还可以采用如图所示包括定向拉动销3f3的结构，制动拉线3f1通过定向拉动销3f3与刹车踏板3f2间接连接，其中，刹车踏板3f2包括可拆卸连接在一起的上壳体3f2a和下壳体3f2b，横管1a从上壳体3f2a和下壳体3f2b之间的空隙中穿过，上壳体3f2a和下壳体3f2b的内壁靠近横管1a的外周面，上壳体3f2a的内壁上设有两个第一斜槽3f2a1，下壳体3f2b的内壁上设有两个第二斜槽3f2b1，第一斜槽3f2a1在水平面上的投影与位于其正下方的第二斜槽3f2b1在水平面上的投影呈一定夹角交叉，另外，在横管1a上间隔开设两个起导向作用的长孔1a1， 长孔1a1沿左右方向(即图7中所示横管的轴线方向)延伸并竖向贯穿横管1a，每个长孔1a1中均穿设一根定向拉动销3f3，每根横管1a中穿设两根制动拉线3f1，每根制动拉线3f1的两端分别连接一根定向拉动销3f3和一个刹车挂钩3d，每根定向拉动销3f3的两端均从长孔1a1中伸出并对应***一个第一斜槽3f2a1和一个第二斜槽3f2b1中。As an optional solution to achieve "one step on double brakes (that is, synchronous braking of the left and right wheels)", the aforementioned driving member 3f can also adopt a structure including a directional pulling pin 3f3 as shown in the figure, and the brake cable 3f1 passes through the directional pulling pin. 3f3 is indirectly connected to the brake pedal 3f2, wherein the brake pedal 3f2 includes an upper shell 3f2a and a lower shell 3f2b that are detachably connected together, and a horizontal pipe 1a passes through the gap between the upper shell 3f2a and the lower shell 3f2b The inner walls of the upper shell 3f2a and the lower shell 3f2b are close to the outer circumferential surface of the horizontal tube 1a, the inner wall of the upper shell 3f2a is provided with two first chute 3f2a1, and the inner wall of the lower shell 3f2b is provided with two second The chute 3f2b1, the projection of the first chute 3f2a1 on the horizontal plane and the projection of the second chute 3f2b1 directly below it on the horizontal plane cross at a certain angle. In addition, two are provided at intervals on the horizontal tube 1a to act as a guide. The long hole 1a1 of the long hole 1a1 extends in the left-right direction (that is, the axial direction of the horizontal tube shown in Figure 7) and vertically penetrates the horizontal tube 1a. Each long hole 1a1 is provided with a directional pulling pin 3f3, each Two brake cables 3f1 pass through the horizontal tube 1a, and the two ends of each brake cable 3f1 are respectively connected with a directional pulling pin 3f3 and a brake hook 3d, and both ends of each directional pulling pin 3f3 pass through the long hole 1a1 extends out and is correspondingly inserted into a first chute 3f2a1 and a second chute 3f2b1.

上述制动机构实现左右轮同步制动的原理为：刹车时，踩踏刹车踏板3f2使其相对于横管1a转动，此时第一斜槽3f2a1和第二斜槽3f2b1相对于横管1a转动，第一斜槽3f2a1和第二斜槽3f2b1的侧壁一起推抵定向拉动销3f3的外周面并带动定向拉动销3f3在长孔1a1中移动(即沿图示横管1a的轴线方向移动)，两根定向拉动销3f3在长孔1a1中相向移动的过程中各自拉扯与其连接的制动拉线3f1，通过两根制动拉线3f1同时往上提拉刹车挂钩3d来实现左右两侧的车轮2b同步制动。The above-mentioned braking mechanism realizes the principle of synchronous braking of the left and right wheels: when braking, step on the brake pedal 3f2 to rotate relative to the horizontal tube 1a. At this time, the first chute 3f2a1 and the second chute 3f2b1 rotate relative to the horizontal tube 1a. The side walls of the first chute 3f2a1 and the second chute 3f2b1 together push against the outer peripheral surface of the directional pulling pin 3f3 and drive the directional pulling pin 3f3 to move in the long hole 1a1 (that is, move along the axial direction of the horizontal tube 1a in the figure). When the directional pulling pins 3f3 move towards each other in the long hole 1a1, each pulls the brake cable 3f1 connected to it, and the two brake cables 3f1 simultaneously pull the brake hook 3d upwards to realize the synchronous braking of the wheels 2b on the left and right sides. move.

另外，如图1-3、图9-10及图21-22所示，与常见的婴儿手推车一样，在上述实施例中，车架1也包括一组推管1b以及交叉设置在推管1b下方的两组脚管1c，推管1b的顶端连接推把1d，轮架安装座2c固定连接在脚管1c的底部，与已有婴儿推车的不同之处在于：推管1b是通过第一活动关节5与脚管1c连接。其中，第一活动关节5包括分别连接在两组脚管1c顶端的第一接头5a和第二接头5b以及固定连接于推管1b的第三接头5c，第一接头5a与第二接头5b连接，第三接头5c铰接于第一接头5a和/第二接头5b并以铰接点作为转动轴心，两组脚管1c上均设有用于锁止推管1b的推管锁止部件，推管1b被解锁释放后，将推管1b从推车的一侧转动至另一侧就可以变换推车的推行方向(即实现“可换向推行”的功能)。In addition, as shown in FIGS. 1-3, 9-10, and 21-22, as with common baby strollers, in the above-mentioned embodiment, the frame 1 also includes a set of push tubes 1b and a set of push tubes 1b arranged crosswise. The bottom two sets of foot tubes 1c, the top of the push tube 1b is connected to the push handle 1d, and the wheel mount 2c is fixedly connected to the bottom of the foot tube 1c. The difference from the existing strollers is that the push tube 1b passes through the A movable joint 5 is connected to the leg tube 1c. The first movable joint 5 includes a first joint 5a and a second joint 5b respectively connected to the top ends of the two sets of leg tubes 1c, and a third joint 5c fixedly connected to the push tube 1b. The first joint 5a is connected to the second joint 5b. , The third joint 5c is hinged to the first joint 5a and/or the second joint 5b and takes the hinge point as the rotation axis. The two sets of leg tubes 1c are provided with a push tube locking component for locking the push tube 1b. After 1b is unlocked and released, turn the push tube 1b from one side of the cart to the other side to change the pushing direction of the cart (that is, to realize the "reversible pushing" function).

除此之外，为便于使用者推行，上述婴儿手推车还可以包括如图8所示的万向轮转向锁止机构，具体地，结合图18-20所示，该万向轮转向锁止机构包括锁止孔6a、锁止销6b、锁止销复位部件6c(例如可以是图中所示的复位弹簧)及定向拉动块6d，锁止孔6a开设在轮架2a上，锁止销6b设置在轮架安装座中并可从轮架安装座2c底端伸出再往下***锁止孔6a中，锁止销复位部件6c设置在轮架安装座2c中并可依靠其自身的回弹力推动锁止销6b往下复位，脚管1c中设有可沿其轴线方向移动的定向拉动块6d，脚管1c中还穿设用于连接锁止销6b和定向拉动块6d的锁止销拉线6e，定向拉动块6d上设有传动销6d1，第三接头5c的内侧设有导槽5c1，导槽5c1包括第一释放段5c1a、第二释放段5c1b以及处于第一释放段5c1a和第二释放段5c1b之间并于前述二者相连的提拉段5c1c，第一释放段5c1a及第二释放段5c1b的导向面与第三接头5c转动轴心之间的距离大于提拉段5c1c的导向面与第三接头5c转动轴心之间的距离，传动销6d1伸入导槽5c1中。In addition, in order to facilitate the user's implementation, the aforementioned baby stroller may also include a universal wheel steering locking mechanism as shown in FIG. 8, specifically, in conjunction with FIGS. 18-20, the universal wheel steering locking mechanism It includes a locking hole 6a, a locking pin 6b, a locking pin reset component 6c (for example, a return spring as shown in the figure), and a directional pulling block 6d. The locking hole 6a is opened on the wheel frame 2a, and the locking pin 6b It is arranged in the wheel carrier mounting seat and can be extended from the bottom end of the wheel carrier mounting seat 2c and then inserted into the locking hole 6a. The locking pin resetting part 6c is arranged in the wheel carrier mounting seat 2c and can rely on its own return. The elastic force pushes the locking pin 6b down to reset, the leg tube 1c is provided with a directional pulling block 6d that can move along its axis, and the leg tube 1c is also provided with a lock for connecting the locking pin 6b and the directional pulling block 6d. The pin pull wire 6e, the directional pulling block 6d is provided with a drive pin 6d1, and a guide groove 5c1 is provided on the inner side of the third joint 5c. The guide groove 5c1 includes a first release section 5c1a, a second release section 5c1b, and a first release section 5c1a and The lifting section 5c1c between the second release section 5c1b and connected to the aforementioned two, the distance between the guide surface of the first release section 5c1a and the second release section 5c1b and the rotation axis of the third joint 5c is greater than that of the lifting section 5c1c The distance between the guide surface and the rotation axis of the third joint 5c, the drive pin 6d1 extends into the guide groove 5c1.

值得一提的是，上述万向轮转向锁止机构可以实现与推管1b之间的联动，例如当转动推 管1b并带动第三接头5c转动到被推管锁止部件锁止的位置时，提拉段5c1c的导向面往上提拉其中一组脚管1c中定向拉动块6d的传动销6d1，使得该定向拉动块6d所连接的锁止销拉线6e往上提拉并将与其连接的锁止销6b从锁止孔6a中抽出，同时另一组脚管1c中所设置的定向拉动块6d的传动销6d1位于导槽5c1的第一释放段5c1a或第二释放段5c1b中，当与该定向拉动块6d通过锁止销拉线6e连接的锁止销6b同其下方轮架2a所开设的锁止孔6a对齐时，该锁止销6b被与其对应的锁止销复位部件6c的回弹力往下推动并***锁止孔6a中。简单来说，上述万向轮转向锁止机构会随推管1b方向的切换而相应地切换其所锁止的万向轮，例如推管1b由推车前侧转动至后侧时，推车前侧的万向轮会同时解锁，而推车后侧的万向轮将被锁止。需要指出的是，由于上述万向轮转向锁止机构与推管1b联动，再加上制动机构在万向轮组中可相对转动的部分(轮架2a与轮架安装座2c)之间是通过钩挂部3d1与倒钩部3e1传递制动力，这样一来，上述婴儿手推车还可以实现一个其它现有手推车所不具备的新功能，那就是推管1b换向后无需再去解除制动，原因在于：假设在推管1b换向之前，后侧万向轮组处于被万向轮转向锁止机构锁止而不能转向的状态，同时使用者通过制动机构刹住了前述后侧万向轮组，以推行方向为参考方向，当推管1b换向之后，之前刹住的后侧万向轮组变换到了推车前侧，同时该万向轮组所对应的万向轮转向锁止机构随推管1b换向而解锁，这时推动推车使得前述万向轮转向，钩挂部3d1将与倒钩部3e1在竖直方向上产生错位，而在刹车销复位部件3g的回弹力作用下，刹车销3c将会沿着叉臂2a1往下运动并带动传动件3e复位，进而带动刹车销3c从刹车齿槽3b中脱出解除制动，当传动件3e的倒钩部3e1往下移动至刹车挂钩3d的钩挂部3d1下方后，倒钩部3e1与钩挂部3d1完全脱离，二者彼此不存在任何干涉，这时该变换到推车前侧的万向轮便可自由转向。It is worth mentioning that the aforementioned universal wheel steering locking mechanism can achieve linkage with the push tube 1b. For example, when the push tube 1b is rotated and the third joint 5c is driven to rotate to the position locked by the push tube locking component , The guiding surface of the lifting section 5c1c pulls up the drive pin 6d1 of the directional pulling block 6d in one of the leg tubes 1c, so that the locking pin cable 6e connected to the directional pulling block 6d is pulled up and connected to it The locking pin 6b is drawn out from the locking hole 6a, and the driving pin 6d1 of the directional pulling block 6d provided in the other set of leg tubes 1c is located in the first release section 5c1a or the second release section 5c1b of the guide groove 5c1, When the locking pin 6b connected to the directional pulling block 6d through the locking pin cable 6e is aligned with the locking hole 6a opened in the lower wheel frame 2a, the locking pin 6b is reset by its corresponding locking pin reset part 6c The resilience force pushes down and inserts into the locking hole 6a. To put it simply, the aforementioned universal wheel steering locking mechanism will switch the universal wheel to which it is locked as the direction of the push tube 1b is switched. For example, when the push tube 1b is rotated from the front side of the cart to the rear side, the cart The universal wheel on the front side will be unlocked at the same time, and the universal wheel on the rear side of the cart will be locked. It should be pointed out that, because the above-mentioned universal wheel steering locking mechanism is linked with the push tube 1b, and the brake mechanism is between the relatively rotatable part of the universal wheel set (wheel carrier 2a and wheel carrier mounting seat 2c) The braking force is transmitted through the hook part 3d1 and the barb part 3e1. In this way, the aforementioned baby stroller can also achieve a new function that other existing strollers do not have, that is, there is no need to release the brake after the push tube 1b is reversed. The reason is that before the push tube 1b changes direction, the rear universal wheel set is locked by the universal wheel steering lock mechanism and cannot be turned, and the user brakes the aforementioned rear side through the brake mechanism. The universal wheel group, taking the pushing direction as the reference direction, when the push tube 1b changes direction, the rear universal wheel group braked before is changed to the front side of the cart, and at the same time the universal wheel group corresponding to the universal wheel group turns The locking mechanism is unlocked with the direction of the push tube 1b. At this time, the cart is pushed to make the aforementioned universal wheel turn. The hook part 3d1 will be misaligned with the barb part 3e1 in the vertical direction, and the brake pin reset part 3g Under the action of the rebound force, the brake pin 3c will move down along the fork arm 2a1 and drive the transmission member 3e to reset, and then drive the brake pin 3c to escape from the brake tooth groove 3b to release the brake, when the barb portion 3e1 of the transmission member 3e After moving down to below the hooking part 3d1 of the brake hook 3d, the barb part 3e1 and the hooking part 3d1 are completely separated, and there is no interference between the two. At this time, it is necessary to change to the universal wheel on the front side of the cart. Free steering.

作为一种优选的结构，在上述实施例中，推管锁止部件包括如图9-10所示设置在脚管1c上的第一销钉7a，在推管1b的底端安装有图21-22所示的锁止块7b及锁止块复位部件7c(例如可以是图22中所示的复位弹簧)，锁止块7b与推管1b滑动连接且仅可沿推管1b的轴线方向来回移动，推管1b中穿设有锁止块拉线7d，推管1b上还安装有解锁部件7e，解锁部件7e与推管1b滑动连接并可沿推管1b的轴线方向来回移动，锁止块拉线7d的底端连接锁止块7b，锁止块拉线7d的顶端连接解锁部件7e，锁止块7b的底端开设有与第一销钉7a相配合的限位缺口7b1。As a preferred structure, in the above embodiment, the push tube locking component includes a first pin 7a arranged on the leg tube 1c as shown in Figures 9-10, and the bottom end of the push tube 1b is provided with Figure 21- The locking block 7b shown in 22 and the locking block resetting member 7c (for example, the return spring shown in FIG. 22), the locking block 7b is slidably connected to the push tube 1b and can only move back and forth along the axis of the push tube 1b Move, the push tube 1b is provided with a locking block pull wire 7d, and an unlocking part 7e is also installed on the push tube 1b. The unlocking part 7e is slidably connected to the push tube 1b and can move back and forth along the axial direction of the push tube 1b. The locking block The bottom end of the pull wire 7d is connected to the locking block 7b, the top end of the locking block pull wire 7d is connected to the unlocking component 7e, and the bottom end of the locking block 7b is provided with a limiting notch 7b1 that cooperates with the first pin 7a.

当沿推管1b往上拉动解锁部件7e(该解锁部件7e可以是图中所示的塑料拉手，也可以采用其它结构形式)时，解锁部件7e通过锁止块拉线7d拉动锁止块7b沿着推管1b的轴线往上移动，同时锁止块复位部件7c产生弹性变形，锁止块7b底端原本卡住第一销钉7a的限位缺口7b1远离第一销钉7a，实现解锁；而在松开解锁部件7e后，在锁止块复位部件7c的 回弹力作用下，锁止块7b沿推管1b的轴线方向往下移动，锁止块7b通过锁止块拉线7d拉动解锁部件7e也沿推管1b的轴线方向往下移动，锁止块7b沿推管1b的轴线方向往下移动至其底端的限位缺口7b1卡住第一销钉7a时，推管1b被锁止。When the unlocking member 7e is pulled upwards along the push tube 1b (the unlocking member 7e can be the plastic handle shown in the figure, or other structural forms), the unlocking member 7e pulls the locking block 7b along the locking block pull wire 7d The axis of the push tube 1b moves upward, and at the same time the locking block resetting part 7c is elastically deformed, and the bottom end of the locking block 7b originally clamps the limiting notch 7b1 of the first pin 7a away from the first pin 7a to achieve unlocking; After the unlocking part 7e is released, under the action of the resilience of the locking block resetting part 7c, the locking block 7b moves downward along the axial direction of the push tube 1b, and the locking block 7b pulls the unlocking part 7e through the locking block cable 7d. Moving downward along the axial direction of the push tube 1b, the locking block 7b moves downward along the axial direction of the push tube 1b until the limiting notch 7b1 at the bottom end clamps the first pin 7a, the push tube 1b is locked.

进一步地，图10所示第一接头5a、第二接头5b及第三接头5c通过同一铰接点铰接在一起，座椅支架4通过图1所示第二活动关节8与第一接头5a及第二接头5b连接，其中，第二活动关节8的结构见图23所示，其包括底座8a及活动座8b，底座8a与第一接头5a及第二接头5b铰接，活动座8b安装在底座8a上并被限制为仅可相对于底座8a上下移动，座椅支架4包括可收折的护栏4a(如图1所示，护栏4a用于挡在婴儿胸前)，见图11-12所示，护栏4a的端头固定连接有第四接头8c，第四接头8c铰接在活动座8b上并可被锁止，此外，该婴儿手推车还包括脚管锁止机构，脚管锁止机构与脚管1c及第二活动关节8之间的位置关系与连接结构见图11-14及图23-27所示，具体来说，前述脚管锁止机构包括固定设置在前后两组脚管1c上的第二销钉9a，活动座8b的底部设有与第二销钉9a相配合的锁止口8b1，通过锁止口8b1卡住第二销钉9a阻止前后两组脚管1c往中间收拢，底座8a上还安装有用于阻止活动座8b往上移动的活动座锁止部件，第四接头8c上设有活动座解锁结构，座椅支架4收折时带动第四接头8c转动，在第四接头8c转动的过程中，活动座解锁结构推动活动座锁止部件移动并解除对活动座8b的锁止，将解锁后的活动座8b往上提，让锁止口8b1远离第二销钉9a即可解除对脚管1c的锁止。Further, the first joint 5a, the second joint 5b, and the third joint 5c shown in FIG. 10 are hinged together by the same hinge point, and the seat bracket 4 is connected to the first joint 5a and the first joint 5a and the first joint 5a through the second movable joint 8 shown in FIG. The two joints 5b are connected. The structure of the second movable joint 8 is shown in Figure 23. It includes a base 8a and a movable base 8b. The base 8a is hinged to the first joint 5a and the second joint 5b, and the movable base 8b is installed on the base 8a. The upper part is restricted to only move up and down relative to the base 8a. The seat bracket 4 includes a foldable guardrail 4a (as shown in Figure 1, the guardrail 4a is used to block the baby's chest), as shown in Figure 11-12 , The end of the guardrail 4a is fixedly connected with a fourth joint 8c, the fourth joint 8c is hinged on the movable seat 8b and can be locked, in addition, the baby stroller also includes a foot tube locking mechanism, a foot tube locking mechanism and a foot The positional relationship and connection structure between the tube 1c and the second movable joint 8 are shown in Figures 11-14 and 23-27. Specifically, the aforementioned leg tube locking mechanism includes fixedly arranged on the front and rear two sets of leg tubes 1c The second pin 9a, the bottom of the movable seat 8b is provided with a locking opening 8b1 that cooperates with the second pin 9a, and the second pin 9a is clamped by the locking opening 8b1 to prevent the two front and rear legs 1c from being folded in the middle. The base 8a There is also a movable seat locking component used to prevent the movable seat 8b from moving upward. The fourth joint 8c is provided with a movable seat unlocking structure. When the seat bracket 4 is folded, the fourth joint 8c is driven to rotate. In the process of rotation, the movable seat unlocking structure pushes the movable seat locking component to move and unlocks the movable seat 8b. Lift the unlocked movable seat 8b upwards to keep the locking port 8b1 away from the second pin 9a. Locking of pin 1c.

其中，活动座锁止部件包括锁止钩8d，锁止钩8d通过销轴与底座8a连接并可以销轴为轴芯翻转，锁止钩8d的底端设有钩扣8d1，活动座8b上开设有与钩扣8d1相配合的扣孔8b2，底座8a上还设有锁止钩复位弹簧8e，通过锁止钩复位弹簧8e自身的回弹力推住锁止钩8d，使得钩扣8d1卡在扣孔8b2中。Wherein, the movable seat locking component includes a locking hook 8d. The locking hook 8d is connected to the base 8a through a pin shaft and can be turned over with the pin shaft. The bottom end of the locking hook 8d is provided with a hook 8d1, and the movable seat 8b is provided with a hook 8d1. A buckle hole 8b2 matched with the hook 8d1 is opened. The base 8a is also provided with a locking hook return spring 8e. The locking hook 8d is pushed by the resilient force of the locking hook return spring 8e, so that the hook 8d1 is stuck in Button hole 8b2.

其中，活动座解锁结构包括设置在第四接头8c上的传动面8c1，在该传动面8c1的下方设有推杆8f，推杆8f活动连接于活动座8b且被限制为仅可相对于活动座8b上下移动，推杆8f的顶端抵靠住传动面8c1，推杆8f的底端及锁止钩8d的顶端设有相互吻合的斜面，前述斜面与销轴的轴心平行，推杆8f底端的斜面抵靠住锁止钩8d顶端的斜面，传动面8c1起点距第四接头8c铰接点的距离小于其终点距第四接头8c铰接点的距离。Among them, the movable seat unlocking structure includes a transmission surface 8c1 provided on the fourth joint 8c, and a push rod 8f is provided below the transmission surface 8c1. The push rod 8f is movably connected to the movable seat 8b and is restricted to be movable only relative to the movable seat 8b. The seat 8b moves up and down, the top end of the push rod 8f abuts against the transmission surface 8c1, the bottom end of the push rod 8f and the top end of the locking hook 8d are provided with inclined surfaces that coincide with each other, and the foregoing inclined surface is parallel to the axis of the pin shaft, and the push rod 8f The inclined surface of the bottom end abuts against the inclined surface of the top end of the locking hook 8d, and the distance between the starting point of the transmission surface 8c1 and the hinge point of the fourth joint 8c is smaller than the distance between its end point and the hinge point of the fourth joint 8c.

上述脚管锁止机构的工作原理为：当座椅支架4收折时将带动第四接头8c转动，在第四接头8c转动的过程中，传动面8c1推抵住推杆8f顶端的位置逐渐由其起点移动到终点，传动面8c1推动推杆8f往下移动，推杆8f往下运动时通过其底端的斜面施加压力于锁止钩8d顶端的斜面，锁止钩8d受力后压缩锁止钩复位弹簧8e并以销轴为轴芯翻转，使得钩扣8d1从扣孔8b2脱出，实现脚管1c解锁，这时两组脚管1c方可往中间收拢。值得一提的是，上 述脚管锁止机构在护栏4a未收折前无法解锁，这样可以更好地保证使用安全性。The working principle of the above-mentioned leg tube locking mechanism is: when the seat bracket 4 is folded, the fourth joint 8c is driven to rotate. During the rotation of the fourth joint 8c, the driving surface 8c1 pushes against the top of the push rod 8f gradually. Moving from the starting point to the end point, the driving surface 8c1 pushes the push rod 8f to move down. When the push rod 8f moves down, the inclined surface at the bottom end applies pressure to the inclined surface of the top end of the locking hook 8d. The locking hook 8d compresses the lock after being forced. The hook stop return spring 8e is turned over with the pin shaft as the axis, so that the hook 8d1 escapes from the buckle hole 8b2, and the leg tube 1c is unlocked. At this time, the two sets of leg tubes 1c can be folded in the middle. It is worth mentioning that the aforementioned leg lock mechanism cannot be unlocked before the guardrail 4a is folded, which can better ensure the safety of use.

总的来说，本发明所涉及的婴儿手推车较现有推车具有以下优点：1、万向轮拆装方便、制动机构可实现同步制动且工作可靠性更高。2、可换向推行，并可在换向后让一侧万向轮的转向自动锁止，而另一侧万向轮的转向自动解锁，同时换向前原本被刹车制动的万向轮组也能在推行时通过让万向轮转向而解除制动，上述锁止和解锁过程无需使用者另行手动操作。3、座椅支架4未收折前脚管锁止机构无法解锁，能更好地保证安全性。4、由于推车前后都采用万向轮，前后方向都可推行，推车的组装工作也变得更简单。In general, the baby stroller involved in the present invention has the following advantages compared with existing strollers: 1. The universal wheel is convenient to disassemble and assemble, the brake mechanism can realize synchronous braking, and the work reliability is higher. 2. It can be reversed, and the steering of one universal wheel can be automatically locked after the reversal, while the steering of the other side universal wheel is automatically unlocked, and at the same time, the universal wheel that was previously braked can be changed forward. The group can also release the brake by turning the universal wheel when it is pushed, and the above-mentioned locking and unlocking process does not require manual operation by the user. 3. The front leg locking mechanism of the seat bracket 4 cannot be unlocked without being folded, which can better ensure safety. 4. Since the cart adopts universal wheels both front and rear, it can be pushed in the front and rear directions, making the assembly work of the cart easier.

上述实施例为本发明较佳的实现方案，除此之外，本发明还可以其它方式实现，在不脱离本技术方案构思的前提下任何显而易见的替换均在本发明的保护范围之内。The above-mentioned embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways, and any obvious replacement without departing from the concept of the technical scheme falls within the protection scope of the present invention.

为了让本领域普通技术人员更方便地理解本发明相对于现有技术的改进之处，本发明的一些附图和描述已经被简化，并且为了清楚起见，本申请文件还省略了一些其它元素，本领域普通技术人员应该意识到这些省略的元素也可构成本发明的内容。In order to allow those of ordinary skill in the art to more easily understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and for clarity, some other elements are omitted in this application file. Those of ordinary skill in the art should realize that these omitted elements can also constitute the content of the present invention.

Claims (10)

1. 一种婴儿手推车，包括车架(1)、万向轮组、制动机构及座椅支架(4)，所述万向轮组包括轮架(2a)、安装在所述轮架(2a)的叉臂(2a1)上的车轮(2b)以及固定设置在车架(1)底部的轮架安装座(2c)，所述轮架(2a)与轮架安装座(2c)可拆卸连接且轮架(2a)可相对于轮架安装座(2c)在水平面内转动，其特征在于，所述制动机构包括：A baby stroller includes a frame (1), a universal wheel set, a braking mechanism and a seat bracket (4), the universal wheel set includes a wheel frame (2a), and is mounted on the wheel frame (2a) The wheel (2b) on the fork arm (2a1) and the wheel carrier mounting seat (2c) fixedly arranged at the bottom of the frame (1), the wheel carrier (2a) and the wheel carrier mounting seat (2c) are detachably connected and The wheel carrier (2a) can rotate in a horizontal plane relative to the wheel carrier mounting seat (2c), and is characterized in that the braking mechanism includes:

   刹车齿(3a)，设置在所述车轮(2b)的侧面，在相邻的两个刹车齿(3a)之间形成刹车齿槽(3b)；The brake tooth (3a) is arranged on the side of the wheel (2b), and a brake tooth groove (3b) is formed between two adjacent brake teeth (3a);

   刹车销(3c)，设于所述叉臂(2a1)靠近车轮(2b)的一侧，所述刹车销(3c)可沿着叉臂(2a1)往上运动卡入刹车齿槽(3b)中并可沿着叉臂(2a1)往下运动从刹车齿槽(3b)中脱出；The brake pin (3c) is arranged on the side of the fork arm (2a1) close to the wheel (2b), and the brake pin (3c) can move upward along the fork arm (2a1) and snap into the brake tooth groove (3b) It can move down along the fork arm (2a1) to escape from the brake tooth groove (3b);

   刹车挂钩(3d)，安装在所述轮架安装座(2c)上并可相对于轮架安装座(2c)运动，所述刹车挂钩(3d)设有钩挂部(3d1)；The brake hook (3d) is mounted on the wheel carrier mounting seat (2c) and can move relative to the wheel carrier mounting seat (2c), and the brake hook (3d) is provided with a hooking portion (3d1);

   传动件(3e)，安装在所述轮架(2a)上并可相对于轮架(2a)运动，所述传动件(3e)用于带动刹车销(3c)运动并设有与钩挂部(3d1)的形状相配合的倒钩部(3e1)，所述倒钩部(3e1)位于钩挂部(3d1)上方并间隔一段距离；The transmission part (3e) is installed on the wheel frame (2a) and can move relative to the wheel frame (2a). The transmission part (3e) is used to drive the brake pin (3c) to move and is provided with a hooking part (3d1) the barb portion (3e1) with matching shape, the barb portion (3e1) is located above the hook portion (3d1) and spaced at a distance;

   驱动件(3f)，安装在所述车架(1)或轮架安装座(2c)上并且连接刹车挂钩(3d)；The driving part (3f) is installed on the frame (1) or the wheel frame mounting seat (2c) and connected to the brake hook (3d);

   刹车销复位部件(3g)，安装在所述轮架(2a)上，可利用其自身的回弹力推动所述刹车销(3c)复位并带动传动件(3e)复位；The brake pin reset component (3g) is installed on the wheel frame (2a), and can use its own resilience to push the brake pin (3c) to reset and drive the transmission member (3e) to reset;

   刹车挂钩复位部件(3h)，安装在所述轮架安装座(2c)上，可利用其自身的回弹力推动所述刹车挂钩(3d)复位；The brake hook reset component (3h) is installed on the wheel carrier mounting seat (2c), and its own resilience force can be used to push the brake hook (3d) to reset;

   所述驱动件(3f)施加拉力带动刹车挂钩(3d)运动时，所述刹车挂钩复位部件(3h)产生弹性变形，所述刹车挂钩(3d)的钩挂部(3d1)往上钩住传动件(3e)的倒钩部(3e1)并带动传动件(3e)运动，所述传动件(3e)运动时带动刹车销(3c)沿着叉臂(2a1)往上运动并使得刹车销复位部件(3g)产生弹性变形，所述刹车销(3c)卡入刹车齿槽(3b)中实现制动；所述驱动件(3f)施加的拉力撤消后，所述刹车挂钩复位部件(3h)的回弹力推动刹车挂钩(3d)往下运动复位，所述刹车销复位部件(3g)的回弹力推动刹车销(3c)沿着叉臂(2a1)往下运动并带动传动件(3e)复位，所述刹车销(3c)从刹车齿槽(3b)中脱出，制动解除。When the driving member (3f) exerts a pulling force to drive the brake hook (3d) to move, the brake hook reset component (3h) is elastically deformed, and the hook portion (3d1) of the brake hook (3d) hooks up the transmission member The barb portion (3e1) of (3e) drives the transmission member (3e) to move. When the transmission member (3e) moves, it drives the brake pin (3c) to move upward along the fork arm (2a1) and makes the brake pin reset component (3g) elastic deformation occurs, the brake pin (3c) snaps into the brake tooth groove (3b) to achieve braking; after the pulling force exerted by the drive member (3f) is removed, the brake hook reset member (3h) The resilience force pushes the brake hook (3d) to move down to reset, and the resilience of the brake pin reset component (3g) pushes the brake pin (3c) to move down along the fork arm (2a1) and drives the transmission member (3e) to reset, The brake pin (3c) is released from the brake tooth groove (3b), and the brake is released.
2. 根据权利要求1所述的婴儿手推车，其特征在于：所述制动机构还包括滑套(3i)，所述滑套(3i)环套住叉臂(2a1)，所述刹车销(3c)固定连接在滑套(3i)靠近车轮(2b)的一侧，所述传动件(3e)设有用于提拉滑套(3i)的提拉部(3e2)，所述刹车挂钩(3d)带动传动件(3e)运动时，所述提拉部(3e2)往上提拉滑套(3i)，使得所述滑套(3i)沿着叉臂(2a1)往上运动，从而带着所述刹车销(3c)沿着叉臂(2a1)往上运动并卡入刹车齿槽(3b)中。The baby stroller according to claim 1, characterized in that: the braking mechanism further comprises a sliding sleeve (3i), the sliding sleeve (3i) rings the fork arm (2a1), and the brake pin (3c) Fixedly connected to the side of the sliding sleeve (3i) close to the wheel (2b), the transmission member (3e) is provided with a lifting part (3e2) for pulling the sliding sleeve (3i), and the brake hook (3d) drives When the transmission member (3e) moves, the lifting part (3e2) pulls the sliding sleeve (3i) upward, so that the sliding sleeve (3i) moves upward along the fork arm (2a1), thereby carrying the The brake pin (3c) moves upward along the fork arm (2a1) and is locked into the brake tooth groove (3b).
3. 根据权利要求2所述的婴儿手推车，其特征在于：所述传动件(3e)为摆臂，所述摆臂 的一端设置铰接点并于该铰接点处与轮架(2a)铰接，所述提拉部(3e2)为设于摆臂另一端的柱销，所述滑套(3i)的顶端设有翻边(3i1)，所述翻边(3i1)位于柱销的上方，所述倒钩部(3e1)设于前述铰接点与柱销之间，所述刹车挂钩(3d)的钩挂部(3d1)钩住倒钩部(3e1)往上提拉时，所述摆臂绕其与轮架(2a)的铰接点转动，所述柱销钩住滑套(3i)顶端的翻边(3i1)并往上提拉，从而使得所述滑套(3i)沿着叉臂(2a1)往上运动。The baby stroller according to claim 2, characterized in that: the transmission member (3e) is a swing arm, one end of the swing arm is provided with a hinge point and is hinged with the wheel frame (2a) at the hinge point, the The lifting part (3e2) is a pin provided at the other end of the swing arm. The top end of the sliding sleeve (3i) is provided with a flange (3i1), and the flange (3i1) is located above the pin. The hook part (3e1) is arranged between the aforementioned hinge point and the pin. When the hook part (3d1) of the brake hook (3d) is hooked to the barb part (3e1) and pulled up, the swing arm is moved around it Rotating with the hinge point of the wheel frame (2a), the pin hooks the flange (3i1) at the top of the sliding sleeve (3i) and pulls it upwards, so that the sliding sleeve (3i) moves along the fork arm (2a1). ) Move up.
4. 根据权利要求1-3中任意一项所述的婴儿手推车，其特征在于：所述车架(1)还包括两根横管(1a)，每根横管(1a)的两端分别连接位于其左侧和右侧的轮架安装座(2c)，所述驱动件(3f)包括制动拉线(3f1)以及通过制动拉线(3f1)间接连接刹车挂钩(3d)的刹车踏板(3f2)，所述两根横管(1a)上均安装有刹车踏板(3f2)，所述刹车踏板(3f2)可相对于横管(1a)转动；The baby stroller according to any one of claims 1-3, characterized in that: the frame (1) further comprises two horizontal tubes (1a), and two ends of each horizontal tube (1a) are respectively connected at The wheel frame mounting seats (2c) on the left and right sides thereof, the driving member (3f) includes a brake cable (3f1) and a brake pedal (3f2) indirectly connected to the brake hook (3d) through the brake cable (3f1) A brake pedal (3f2) is installed on the two horizontal pipes (1a), and the brake pedal (3f2) can rotate relative to the horizontal pipe (1a);

   刹车时，踩踏所述刹车踏板(3f2)使其相对于横管(1a)转动，此时所述刹车踏板(3f2)拉扯制动拉线(3f1)，所述制动拉线(3f1)往上提拉刹车挂钩(3d)。When braking, step on the brake pedal (3f2) to rotate relative to the horizontal tube (1a). At this time, the brake pedal (3f2) pulls the brake cable (3f1), and the brake cable (3f1) is lifted up Pull the brake hook (3d).
5. 根据权利要求4所述的婴儿手推车，其特征在于：所述驱动件(3f)还包括定向拉动销(3f3)，所述制动拉线(3f1)通过定向拉动销(3f3)与刹车踏板(3f2)间接连接，所述刹车踏板(3f2)包括可拆卸连接在一起的上壳体(3f2a)和下壳体(3f2b)，所述横管(1a)从上壳体(3f2a)和下壳体(3f2b)之间的空隙中穿过，所述上壳体(3f2a)和下壳体(3f2b)的内壁靠近横管(1a)的外周面，所述上壳体(3f2a)的内壁上设有两个第一斜槽(3f2a1)，所述下壳体(3f2b)的内壁上设有两个第二斜槽(3f2b1)，所述第一斜槽(3f2a1)在水平面上的投影与位于其正下方的第二斜槽(3f2b1)在水平面上的投影呈一定夹角交叉，所述横管(1a)上间隔开设有两个起导向作用的长孔(1a1)，所述长孔(1a1)沿左右方向延伸并竖向贯穿横管(1a)，每个长孔(1a1)中均穿设有一根定向拉动销(3f3)，每根横管(1a)中穿设有两根制动拉线(3f1)，每根制动拉线(3f1)的两端分别连接一根定向拉动销(3f3)和一个刹车挂钩(3d)，每根定向拉动销(3f3)的两端均从长孔(1a1)中伸出并对应***一个第一斜槽(3f2a1)和一个第二斜槽(3f2b1)中；The baby stroller according to claim 4, characterized in that: the driving member (3f) further comprises a directional pulling pin (3f3), and the brake cable (3f1) is connected to the brake pedal (3f2) through the directional pulling pin (3f3). ) Indirect connection, the brake pedal (3f2) includes an upper shell (3f2a) and a lower shell (3f2b) that are detachably connected together, and the horizontal pipe (1a) is connected from the upper shell (3f2a) and the lower shell (3f2b) through the gap between the upper shell (3f2a) and the inner wall of the lower shell (3f2b) close to the outer peripheral surface of the horizontal tube (1a), the inner wall of the upper shell (3f2a) is provided There are two first oblique grooves (3f2a1), the inner wall of the lower shell (3f2b) is provided with two second oblique grooves (3f2b1), and the projection of the first oblique groove (3f2a1) on the horizontal plane is The projection of the second chute (3f2b1) directly below it on the horizontal plane crosses at a certain included angle, and the horizontal tube (1a) is provided with two long holes (1a1) that play a guiding role at intervals. 1a1) extends along the left and right directions and vertically penetrates the horizontal tube (1a), each long hole (1a1) is provided with a directional pulling pin (3f3), and each horizontal tube (1a) is provided with two The two ends of each brake cable (3f1) are connected to a directional pull pin (3f3) and a brake hook (3d), and both ends of each directional pull pin (3f3) pass through the long hole (1a1) protruding from and correspondingly inserted into a first chute (3f2a1) and a second chute (3f2b1);

   刹车时，踩踏所述刹车踏板(3f2)使其相对于横管(1a)转动，此时所述第一斜槽(3f2a1)和第二斜槽(3f2b1)的侧壁一起推抵定向拉动销(3f3)的外周面并带动定向拉动销(3f3)在长孔(1a1)中移动，两根定向拉动销(3f3)在长孔(1a1)中相向移动的过程中各自拉扯与其连接的制动拉线(3f1)，通过两根制动拉线(3f1)同时往上提拉刹车挂钩(3d)来实现左右两侧的车轮(2b)同步制动。When braking, step on the brake pedal (3f2) to rotate relative to the horizontal pipe (1a). At this time, the side walls of the first chute (3f2a1) and the second chute (3f2b1) push against the directional pull pin together The outer peripheral surface of (3f3) drives the directional pulling pin (3f3) to move in the elongated hole (1a1), and the two directional pulling pins (3f3) respectively pull the brake cable connected to the elongated hole (1a1) during the process of moving towards each other in the elongated hole (1a1). (3f1), the two brake cables (3f1) simultaneously pull up the brake hook (3d) to achieve synchronous braking of the wheels (2b) on the left and right sides.
6. 根据权利要求1-3中任意一项所述的婴儿手推车，其特征在于：所述车架(1)包括一组推管(1b)以及交叉设置在推管(1b)下方的两组脚管(1c)，所述推管(1b)的顶端连接推把 (1d)，所述轮架安装座(2c)固定连接在脚管(1c)的底部，所述推管(1b)通过第一活动关节(5)与脚管(1c)连接，所述第一活动关节(5)包括分别连接在两组脚管(1c)顶端的第一接头(5a)和第二接头(5b)以及固定连接于推管(1b)的第三接头(5c)，所述第一接头(5a)与第二接头(5b)连接，所述第三接头(5c)铰接于第一接头(5a)和/第二接头(5b)并以铰接点作为转动轴心，所述两组脚管(1c)上均设有用于锁止推管(1b)的推管锁止部件，所述推管(1b)被解锁释放后，将所述推管(1b)从推车的一侧转动至另一侧可以变换推车的推行方向。The baby stroller according to any one of claims 1-3, characterized in that: the frame (1) includes a set of push tubes (1b) and two sets of foot tubes intersectingly arranged under the push tubes (1b) (1c), the top end of the push tube (1b) is connected to the push handle (1d), the wheel frame mounting seat (2c) is fixedly connected to the bottom of the leg tube (1c), and the push tube (1b) passes through the first The movable joint (5) is connected to the foot tube (1c). The first movable joint (5) includes a first joint (5a) and a second joint (5b) connected to the top ends of the two sets of foot tubes (1c), and a fixed The third joint (5c) connected to the push tube (1b), the first joint (5a) is connected to the second joint (5b), and the third joint (5c) is hingedly connected to the first joint (5a) and/ The second joint (5b) uses the hinge point as the axis of rotation. The two sets of leg tubes (1c) are provided with a push tube locking component for locking the push tube (1b), and the push tube (1b) After being unlocked and released, turning the push tube (1b) from one side of the cart to the other side can change the pushing direction of the cart.
7. 根据权利要求6所述的婴儿手推车，其特征在于：该婴儿手推车还包括万向轮转向锁止机构，所述万向轮转向锁止机构包括锁止孔(6a)、锁止销(6b)、锁止销复位部件(6c)及定向拉动块(6d)，所述锁止孔(6a)开设在轮架(2a)上，所述锁止销(6b)设置在轮架安装座中并可从轮架安装座(2c)底端伸出再往下***锁止孔(6a)中，所述锁止销复位部件(6c)设置在轮架安装座(2c)中并可依靠其自身的回弹力推动锁止销(6b)往下复位，所述脚管(1c)中设有可沿其轴线方向移动的定向拉动块(6d)，所述脚管(1c)中还穿设用于连接锁止销(6b)和定向拉动块(6d)的锁止销拉线(6e)，所述定向拉动块(6d)上设有传动销(6d1)，所述第三接头(5c)的内侧设有导槽(5c1)，所述导槽(5c1)包括第一释放段(5c1a)、第二释放段(5c1b)以及处于第一释放段(5c1a)和第二释放段(5c1b)之间并于前述二者相连的提拉段(5c1c)，所述第一释放段(5c1a)及第二释放段(5c1b)的导向面与第三接头(5c)转动轴心之间的距离大于提拉段(5c1c)的导向面与第三接头(5c)转动轴心之间的距离，所述传动销(6d1)伸入导槽(5c1)中；The baby stroller according to claim 6, characterized in that: the baby stroller further comprises a universal wheel steering locking mechanism, the universal wheel steering locking mechanism comprising a locking hole (6a) and a locking pin (6b) , The locking pin reset component (6c) and the directional pulling block (6d), the locking hole (6a) is opened on the wheel frame (2a), and the locking pin (6b) is arranged in the wheel frame mounting seat and It can be extended from the bottom end of the wheel carrier mounting seat (2c) and then inserted down into the locking hole (6a). The locking pin reset component (6c) is arranged in the wheel carrier mounting seat (2c) and can rely on itself The resilience force pushes the locking pin (6b) to reset downwards, the leg tube (1c) is provided with a directional pulling block (6d) that can move along its axis, and the leg tube (1c) is also used for piercing A locking pin pull wire (6e) connecting the locking pin (6b) and the directional pulling block (6d), the directional pulling block (6d) is provided with a driving pin (6d1), the third joint (5c) A guide groove (5c1) is provided on the inner side, and the guide groove (5c1) includes a first release section (5c1a), a second release section (5c1b), and one of the first release section (5c1a) and the second release section (5c1b). In the lifting section (5c1c) which is connected between the aforementioned two, the distance between the guide surface of the first release section (5c1a) and the second release section (5c1b) and the rotation axis of the third joint (5c) is greater than The distance between the guide surface of the lifting section (5c1c) and the rotation axis of the third joint (5c), the drive pin (6d1) extends into the guide groove (5c1);

   当转动所述推管(1b)并带动第三接头(5c)转动到被推管锁止部件锁止的位置时，所述提拉段(5c1c)的导向面往上提拉其中一组脚管(1c)中定向拉动块(6d)的传动销(6d1)，使得该定向拉动块(6d)所连接的锁止销拉线(6e)往上提拉并将与其连接的锁止销(6b)从锁止孔(6a)中抽出，同时另一组脚管(1c)中所设置的定向拉动块(6d)的传动销(6d1)位于导槽(5c1)的第一释放段(5c1a)或第二释放段(5c1b)中，当与该定向拉动块(6d)通过锁止销拉线(6e)连接的锁止销(6b)同其下方轮架(2a)所开设的锁止孔(6a)对齐时，该锁止销(6b)被与其对应的锁止销复位部件(6c)的回弹力往下推动并***锁止孔(6a)中。When the push tube (1b) is rotated and the third joint (5c) is rotated to the position locked by the push tube locking component, the guide surface of the lifting section (5c1c) pulls one set of feet upward The drive pin (6d1) of the directional pulling block (6d) in the tube (1c), so that the locking pin pull wire (6e) connected to the directional pulling block (6d) is pulled upward and the locking pin (6b) connected to it is pulled up ) Is pulled out from the locking hole (6a), and the drive pin (6d1) of the directional pulling block (6d) set in the other set of leg pipes (1c) is located in the first release section (5c1a) of the guide groove (5c1) Or in the second release section (5c1b), when the locking pin (6b) connected to the directional pulling block (6d) through the locking pin pull wire (6e) and the locking hole (2a) opened on the lower wheel frame (2a) When 6a) is aligned, the locking pin (6b) is pushed down by the resilient force of the corresponding locking pin resetting component (6c) and inserted into the locking hole (6a).
8. 根据权利要求6所述的婴儿手推车，其特征在于：所述推管锁止部件包括设置在脚管(1c)上的第一销钉(7a)，所述推管(1b)的底端安装有锁止块(7b)及锁止块复位部件(7c)，所述锁止块(7b)与推管(1b)滑动连接且仅可沿推管(1b)的轴线方向来回移动，所述推管(1b)中穿设有锁止块拉线(7d)，所述推管(1b)上还安装有解锁部件(7e)，所述解锁部件(7e)与推管(1b)滑动连接并可沿推管(1b)的轴线方向来回移动，所述锁止块拉线(7d)的底端连接锁止块(7b)，所述锁止块拉线(7d)的顶端连接解锁部件(7e)，所述锁止块(7b)的底 端开设有与第一销钉(7a)相配合的限位缺口(7b1)；The baby stroller according to claim 6, characterized in that: the push tube locking component comprises a first pin (7a) arranged on the foot tube (1c), and the bottom end of the push tube (1b) is installed The lock block (7b) and the lock block reset component (7c), the lock block (7b) is slidably connected with the push tube (1b) and can only move back and forth along the axis of the push tube (1b). A locking block pull wire (7d) is penetrated in the tube (1b), an unlocking component (7e) is also installed on the push tube (1b), and the unlocking component (7e) is slidably connected to the push tube (1b). Moving back and forth along the axial direction of the push tube (1b), the bottom end of the locking block cable (7d) is connected to the locking block (7b), and the top end of the locking block cable (7d) is connected to the unlocking component (7e), The bottom end of the locking block (7b) is provided with a limiting notch (7b1) that cooperates with the first pin (7a);

   沿所述推管(1b)往上拉动解锁部件(7e)时，所述解锁部件(7e)通过锁止块拉线(7d)拉动锁止块(7b)沿着推管(1b)的轴线往上移动，同时所述锁止块复位部件(7c)产生弹性变形，所述锁止块(7b)底端原本卡住第一销钉(7a)的限位缺口(7b1)远离第一销钉(7a)，实现解锁；松开所述解锁部件(7e)后，在所述锁止块复位部件(7c)的回弹力作用下，所述锁止块(7b)沿推管(1b)的轴线方向往下移动，所述锁止块(7b)通过锁止块拉线(7d)拉动解锁部件(7e)也沿推管(1b)的轴线方向往下移动，所述锁止块(7b)沿推管(1b)的轴线方向往下移动至其底端的限位缺口(7b1)卡住第一销钉(7a)时，所述推管(1b)被锁止。When the unlocking component (7e) is pulled up along the push tube (1b), the unlocking component (7e) pulls the locking block (7b) along the axis of the push tube (1b) through the locking block pull wire (7d) Moves upward, and at the same time the locking block resetting component (7c) is elastically deformed, and the bottom end of the locking block (7b) originally clamps the limiting notch (7b1) of the first pin (7a) away from the first pin (7a) ) To achieve unlocking; after releasing the unlocking component (7e), under the action of the resilient force of the locking block resetting component (7c), the locking block (7b) is along the axial direction of the push tube (1b) Moving down, the locking block (7b) pulls the unlocking member (7e) through the locking block pull wire (7d) and also moves downward along the axis of the push tube (1b), and the locking block (7b) moves along the push tube (1b). When the axial direction of the tube (1b) moves downward to the limit notch (7b1) at the bottom end of the tube (1b) to clamp the first pin (7a), the push tube (1b) is locked.
9. 根据权利要求6所述的婴儿手推车，其特征在于：所述第一接头(5a)、第二接头(5b)及第三接头(5c)通过同一铰接点铰接在一起，所述座椅支架(4)通过第二活动关节(8)与第一接头(5a)及第二接头(5b)连接，所述第二活动关节(8)包括底座(8a)及活动座(8b)，所述底座(8a)与第一接头(5a)及第二接头(5b)铰接，所述活动座(8b)安装在底座(8a)上并被限制为仅可相对于底座(8a)上下移动，所述座椅支架(4)包括可收折的护栏(4a)，所述护栏(4a)的端头固定连接有第四接头(8c)，所述第四接头(8c)铰接在活动座(8b)上并可被锁止，该婴儿手推车还包括脚管锁止机构；The baby stroller according to claim 6, characterized in that: the first joint (5a), the second joint (5b) and the third joint (5c) are hinged together by the same hinge point, and the seat bracket ( 4) Connected to the first joint (5a) and the second joint (5b) through a second movable joint (8), the second movable joint (8) includes a base (8a) and a movable seat (8b), the base (8a) is hinged with the first joint (5a) and the second joint (5b), the movable seat (8b) is installed on the base (8a) and is restricted to only move up and down relative to the base (8a), the The seat bracket (4) includes a collapsible guardrail (4a), the end of the guardrail (4a) is fixedly connected with a fourth joint (8c), and the fourth joint (8c) is hinged on the movable seat (8b) Can be locked, the stroller also includes a foot tube locking mechanism;

   所述脚管锁止机构包括固定设置在前后两组脚管(1c)上的第二销钉(9a)，所述活动座(8b)的底部设有与第二销钉(9a)相配合的锁止口(8b1)，通过所述锁止口(8b1)卡住第二销钉(9a)阻止前后两组脚管(1c)往中间收拢，所述底座(8a)上还安装有用于阻止活动座(8b)往上移动的活动座锁止部件，所述第四接头(8c)上设有活动座解锁结构，所述座椅支架(4)收折时带动第四接头(8c)转动，在所述第四接头(8c)转动的过程中，所述活动座解锁结构推动活动座锁止部件移动并解除对活动座(8b)的锁止，将解锁后的活动座(8b)往上提，让所述锁止口(8b1)远离第二销钉(9a)即可解除对脚管(1c)的锁止。The leg lock mechanism includes a second pin (9a) fixedly arranged on the front and rear two sets of leg pipes (1c), and the bottom of the movable seat (8b) is provided with a lock that cooperates with the second pin (9a) The stop port (8b1), through the locking port (8b1), clamps the second pin (9a) to prevent the front and rear two sets of foot tubes (1c) from being folded in the middle, and the base (8a) is also installed with a seat for preventing movement (8b) The movable seat locking component that moves upwards, the fourth joint (8c) is provided with a movable seat unlocking structure, and the fourth joint (8c) is driven to rotate when the seat bracket (4) is folded. During the rotation of the fourth joint (8c), the movable seat unlocking structure pushes the movable seat locking component to move and unlocks the movable seat (8b), and lifts the unlocked movable seat (8b) upward , The locking of the leg tube (1c) can be released by keeping the locking opening (8b1) away from the second pin (9a).
10. 根据权利要求9所述的婴儿手推车，其特征在于：所述活动座锁止部件包括锁止钩(8d)，所述锁止钩(8d)通过销轴与底座(8a)连接并可以销轴为轴芯翻转，所述锁止钩(8d)的底端设有钩扣(8d1)，所述活动座(8b)上开设有与钩扣(8d1)相配合的扣孔(8b2)，所述底座(8a)上还设有锁止钩复位弹簧(8e)，通过所述锁止钩复位弹簧(8e)自身的回弹力推住锁止钩(8d)，使得所述钩扣(8d1)卡在扣孔(8b2)中；The baby stroller according to claim 9, characterized in that: the movable seat locking component includes a locking hook (8d), and the locking hook (8d) is connected to the base (8a) through a pin and can be pinned. In order to reverse the shaft core, the bottom end of the locking hook (8d) is provided with a hook (8d1), and the movable seat (8b) is provided with a buckle hole (8b2) that matches the hook (8d1), so The base (8a) is also provided with a locking hook return spring (8e), and the locking hook (8d) is pushed by the resilient force of the locking hook return spring (8e) to make the hook (8d1) It is stuck in the button hole (8b2);

    所述活动座解锁结构包括设置在第四接头(8c)上的传动面(8c1)，所述传动面(8c1)的下方设有推杆(8f)，所述推杆(8f)活动连接于活动座(8b)且被限制为仅可相对于活动座(8b)上下移动，所述推杆(8f)的顶端抵靠住传动面(8c1)，所述推杆(8f)的底端及锁止钩(8d)的顶端设有相互吻合的斜面，所述斜面与销轴的轴心平行，所述推杆(8f)底端的斜面 抵靠住锁止钩(8d)顶端的斜面，所述传动面(8c1)起点距第四接头(8c)铰接点的距离小于其终点距第四接头(8c)铰接点的距离；The movable seat unlocking structure includes a transmission surface (8c1) provided on the fourth joint (8c), a push rod (8f) is provided under the transmission surface (8c1), and the push rod (8f) is movably connected to The movable seat (8b) is restricted to only move up and down relative to the movable seat (8b), the top end of the push rod (8f) abuts the transmission surface (8c1), the bottom end of the push rod (8f) and The top end of the locking hook (8d) is provided with an inclined surface that coincides with each other, the inclined surface is parallel to the axis of the pin shaft, and the inclined surface of the bottom end of the push rod (8f) abuts against the inclined surface of the top end of the locking hook (8d), so The distance between the starting point of the transmission surface (8c1) and the hinge point of the fourth joint (8c) is less than the distance between its end point and the hinge point of the fourth joint (8c);

    所述座椅支架(4)收折时带动第四接头(8c)转动，在所述第四接头(8c)转动的过程中，所述传动面(8c1)推抵住推杆(8f)顶端的位置逐渐由其起点移动到终点，所述传动面(8c1)推动推杆(8f)往下移动，所述推杆(8f)往下运动时通过其底端的斜面施加压力于锁止钩(8d)顶端的斜面，所述锁止钩(8d)受力后压缩锁止钩复位弹簧(8e)并以销轴为轴芯翻转，使得所述钩扣(8d1)从扣孔(8b2)脱出。When the seat bracket (4) is folded, the fourth joint (8c) is driven to rotate. During the rotation of the fourth joint (8c), the transmission surface (8c1) pushes against the top end of the push rod (8f) The position gradually moves from its starting point to the end point. The transmission surface (8c1) pushes the push rod (8f) to move downwards. When the push rod (8f) moves downwards, pressure is applied to the locking hook ( 8d) The inclined surface of the top end, the locking hook (8d) compresses the locking hook return spring (8e) after being forced and turns over with the pin shaft as the axis, so that the hook (8d1) escapes from the buckle hole (8b2) .

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