CN110294008B

CN110294008B - Baby carriage

Info

Publication number: CN110294008B
Application number: CN201810240824.4A
Authority: CN
Inventors: 李建群
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2018-03-22
Filing date: 2018-03-22
Publication date: 2022-11-18
Anticipated expiration: 2038-03-22
Also published as: CN110294008A

Abstract

The invention discloses a baby stroller, which comprises a bottom tube, front legs, a handle, a connecting rod assembly and a transverse connecting mechanism, wherein the front legs are correspondingly pivoted on the bottom tube, and the handle is respectively and correspondingly pivoted on the front legs; one end of the connecting rod component is pivoted with a driver, and the other end of the connecting rod component is pivoted with a bottom tube; the transverse connecting mechanism comprises an upper cross pipe assembly and a lower cross pipe assembly, two ends of the upper cross pipe assembly are respectively pivoted to the connecting rod assembly and the bottom pipes, one end of the lower cross pipe assembly is pivoted between the bottom pipes, and the other end of the lower cross pipe assembly is slidably connected to the bottom pipes. The baby stroller can be longitudinally and transversely folded, has smaller volume after being folded, is convenient to carry and store, and is simple and convenient to fold and operate.

Description

Baby carriage

Technical Field

The invention relates to the technical field of baby carriers, in particular to a baby stroller with a smaller folding volume.

Background

The stroller is widely used in families with infants, and provides great convenience for outdoor activities of infants. Generally, the stroller has an unfolded state and a folded state, and when the stroller is not used, the stroller is folded for storage and carrying.

Most of the existing baby strollers can only be longitudinally folded but cannot be transversely folded, so that the folded baby strollers are still not small enough in size and inconvenient to carry and store. Some stroller with transverse folding function has transverse and longitudinal folding mechanism, so the user must operate both hands simultaneously to fold the stroller, which is very inconvenient for the user carrying the baby.

Therefore, there is a need for a stroller with a smaller folding volume and a convenient folding operation to overcome the above-mentioned problems in the prior art.

Disclosure of Invention

The invention aims to provide a baby stroller which is convenient to fold and operate and has a smaller folding volume.

In order to achieve the purpose, the technical scheme of the invention is as follows: providing a baby stroller comprising a pair of bottom tubes, a pair of front legs, a pair of rear support tubes, a pair of handrails, a pair of link assemblies and a transverse connecting mechanism; wherein, one end of each bottom tube is connected with the rear wheel; a front leg is correspondingly pivoted on a bottom tube, and the front leg is connected with a front wheel; the pair of the vehicle hands are correspondingly pivoted on the front feet respectively; the pair of connecting rod assemblies are respectively pivoted to a driver at one end and a bottom tube at the other end; the transverse connecting mechanism comprises an upper cross pipe assembly and a lower cross pipe assembly, two ends of the upper cross pipe assembly are respectively pivoted between the pair of connecting rod assemblies and the pair of bottom pipes, one end of the lower cross pipe assembly is pivoted between the pair of bottom pipes, and the other end of the lower cross pipe assembly is slidably connected to the pair of bottom pipes.

Preferably, the stroller further comprises a pair of seat tubes, one of the seat tubes is pivotally connected to the front leg and the connecting rod assembly, and the upper end of the upper cross tube assembly is pivotally connected to the pair of seat tubes.

Preferably, each of the connecting rod assemblies includes an upper connecting rod and a lower connecting rod pivotally connected to each other, the upper connecting rod is pivotally connected to the rider, and the lower connecting rod is pivotally connected to the bottom tube.

Preferably, the upper cross pipe assembly includes a first cross pipe and a second cross pipe which are arranged in a cross manner and pivoted with each other, upper ends of the first cross pipe and the second cross pipe are respectively pivoted to the pair of connecting rod assemblies or the pair of seat pipes, and lower ends of the first cross pipe and the second cross pipe are respectively pivoted to the pair of bottom pipes.

Preferably, the lower cross pipe assembly includes a third cross pipe and a fourth cross pipe which are crossed and pivoted with each other, one end of the third cross pipe and one end of the fourth cross pipe are respectively pivoted to the pair of bottom pipes, and the other end of the third cross pipe and the other end of the fourth cross pipe are respectively slidably connected to the pair of bottom pipes.

Preferably, the stroller further comprises a pair of sliding sleeves, each sliding sleeve is correspondingly slidably connected to one of the bottom tubes, and the lower cross tube assembly is pivotally connected to the sliding sleeve.

Preferably, the stroller further comprises a pair of rear support tubes, one of the rear support tubes is disposed between one of the base tubes and one of the link assemblies, the upper end of the rear support tube is pivotally connected to the front leg, the lower end of the rear support tube is connected to the base tube, and the link assembly is pivotally connected to the middle end of the rear support tube.

Preferably, the stroller further comprises a pair of sliding sleeves, each sliding sleeve is correspondingly slidably connected to one of the bottom tubes, and the rear supporting tube is pivotally connected to the sliding sleeve.

Preferably, the stroller further comprises a handle connecting mechanism pivotally connected between the pair of handles and a frame locking mechanism disposed between the handles and the front legs and connected to the handle connecting mechanism, wherein after the handle connecting mechanism is unlocked, the handle connecting mechanism can pivot relative to the handles and drive the frame locking mechanism to unlock.

Preferably, the frame locking mechanism includes a locking member slidably disposed in the rider and connected to the rider coupling mechanism, and the locking member is detachably engaged with the front leg.

Preferably, the frame locking mechanism further includes a first pivot member fixed to the front leg, and a locking notch corresponding to the locking member is formed in the first pivot member, and the locking member is detachably engaged with the locking notch.

Preferably, the frame locking mechanism further comprises a second pivoting member fixed to the rider, a slot is formed in the second pivoting member, and the first pivoting member is clamped in the slot and pivotally connected to the second pivoting member.

Preferably, the handlebar connecting mechanism comprises a transverse connecting piece pivoted between the handlebars and a handlebar locking assembly arranged on the transverse connecting piece, and after the handlebar locking assembly is unlocked, the transverse connecting piece can pivot relative to the handlebars to drive the frame locking mechanism to be unlocked.

Preferably, the rider connection mechanism further comprises a traction member connected between the frame locking mechanism and the transverse connecting member, and the transverse connecting member pulls the frame locking mechanism to unlock when pivoting.

Preferably, the driver connecting mechanism further comprises a fixing member fixed to the transverse connecting member and the traction member, and the transverse connecting member drives the fixing member to pivot synchronously.

Preferably, the transverse connecting member is provided with a clamping hole corresponding to the fixing member in shape, and the fixing member is fixedly connected in the clamping hole.

Preferably, the rider is provided with a sliding groove opposite to the fixing member, and the fixing member protrudes out of the transverse connecting member and is slidably clamped in the sliding groove.

Preferably, the handlebar connecting mechanism further comprises a pair of handlebar connecting members respectively fixed to the pair of handlebars, and both ends of the transverse connecting member are respectively pivoted to the two handlebar connecting members.

Preferably, the transverse connecting member includes a first rod and a second rod pivotally connected to each other, and the rider locking assembly is disposed at a pivotal connection of the first rod and the second rod.

Preferably, the rider locking assembly comprises a first rotary joint, a second rotary joint and a positioning piece; the first rotating joint is arranged at one end of the first rod piece and is provided with a first accommodating groove; the second rotating joint is arranged at one end of the second rod piece and is pivoted with the first rotating joint, and the second rotating joint is provided with a second accommodating groove corresponding to the first accommodating groove; the positioning piece is slidably arranged in the first accommodating groove and the second accommodating groove, when the positioning piece is clamped with the first rotary joint and the second rotary joint, the handlebar locking assembly is locked, and when the positioning piece slides to be separated from the first rotary joint or the second rotary joint, the handlebar locking assembly is unlocked.

Preferably, the positioning member is provided with a plurality of positioning teeth in a protruding manner, and the inner walls of the first accommodating groove and the second accommodating groove are respectively provided with a plurality of positioning grooves corresponding to the positioning teeth.

Preferably, the rider locking assembly further includes a lock releasing button slidably connected to the first rotating joint or the second rotating joint for driving the positioning member to slidably release the lock.

Preferably, the handlebar locking assembly further includes an elastic member abutting against the positioning member for driving the positioning member to return to the locking position.

Compared with the prior art, the baby stroller has the advantages that the stroller handle, the front leg and the bottom tube are mutually pivoted, the connecting rod assembly is respectively pivoted between the stroller handle and the bottom tube, meanwhile, the connecting rod assembly and the bottom tube are also pivoted with the upper cross tube assembly which can pivot per se, and the bottom tube is also pivoted with the lower cross tube assembly which can pivot per se; therefore, when the baby stroller is folded, the stroller hands, the front legs and the bottom tubes can be pushed to pivot mutually to realize longitudinal folding of the baby stroller, in the process, the upper cross tube assembly and the lower cross tube assembly respectively pivot to drive the pair of bottom tubes, the pair of stroller hands and the pair of front legs to be drawn close respectively, so that the baby stroller is transversely folded, the folded baby stroller has a small size, and is convenient to carry and store, and the folding operation is simple and convenient.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the stroller of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 from another angle.

Fig. 3 is a schematic view of the stroller of fig. 1 in a collapsed state.

Fig. 4 is a schematic view of the handle linkage of the stroller of fig. 1.

Fig. 5 is another state diagram of fig. 4.

Fig. 6 is a partially exploded view of fig. 4.

Fig. 7 is a schematic view of the structure of fig. 6 from another angle.

Fig. 8 is an exploded view of the hand lock assembly of fig. 4.

Fig. 9 is a schematic view of the structure of fig. 8 from another angle.

Fig. 10 is an exploded view of the hand attachment mechanism of fig. 4 in cooperation with the frame locking mechanism.

Fig. 11 is a schematic view of the frame locking mechanism of fig. 10 from another angle.

Fig. 12 is a schematic view of another embodiment of the stroller of the present invention.

Fig. 13 is a schematic view of the structure of fig. 12 from another angle.

Fig. 14 is a schematic view of the stroller of fig. 12 in a collapsed state.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements.

Referring first to fig. 1-2, an embodiment of a stroller 1 is provided that includes a pair of riders 10, a pair of front legs 20, a pair of rear support tubes 30, a pair of bottom tubes 40, a pair of linkage assemblies 50, a pair of seat tubes 60, and a transverse linkage 70. The lower end of each rider 10 and the upper end of a front leg 20 are pivotally connected to the first pivot point A1, the lower end of each front leg 20 and the front end of a bottom tube 40 are pivotally connected to the second pivot point A2, and the lower end of the front leg 20 and the rear end of the bottom tube 40 are respectively provided with a front wheel and a rear wheel. Each rear support tube 30 is correspondingly disposed between a front leg 20 and a bottom tube 40, the upper end of the rear support tube 30 and the front leg 20 are pivotally connected to the third pivot point A3, and the lower end of the rear support tube 30 is slidably connected to the bottom tube 40. The upper end of each link assembly 50 and a rider 10 are pivotally connected to the fourth pivot point A4, the lower end of each link assembly 50 and a corresponding bottom tube 40 are pivotally connected to the fifth pivot point A5, and a pair of link assemblies 50 are symmetrically disposed on both sides of the stroller 1. A pair of seat tubes 60 are symmetrically pivoted to the pair of riders 10, and the rear end of each seat tube 60 and the corresponding linkage assembly 50 are pivoted to the sixth pivot point A6. When folded, the stroller 1 is folded longitudinally by pivoting the handle 10, the front leg 20, the rear support tube 30, the bottom tube 40, the connecting rod assembly 50 and the seat tube 60.

As shown in fig. 1, the transverse connecting mechanism 70 is respectively pivoted between the pair of bottom tubes 40 and the pair of connecting rod assemblies 50, and the transverse connecting mechanism 70 pivots to enable the pair of bottom tubes 40 to be drawn close to each other, so as to enable the pair of front legs 20 and the pair of handrails 10 to be drawn close to each other, thereby achieving the transverse folding of the stroller 1.

As shown in fig. 1-2, each link assembly 50 includes an upper link 51 and a lower link 52, the upper link 51 and the lower link 52 are pivotally connected to the seventh pivot point A7, the upper link 51 and a rider 10 are pivotally connected to the fourth pivot point A4, and the lower link 52 and the bottom tube 40 on the same side are pivotally connected to the fifth pivot point A5; the rear end of the seat tube 60 is pivotally connected to the upper link 51, and the seat tube is pivotally connected to the sixth pivot point A6, and the sixth pivot point A6 and the seventh pivot point A7 may be the same pivot point (i.e. disposed on the same pivot axis), or may be respectively disposed in two.

Referring again to fig. 1-2, the transverse connecting mechanism 70 of the present embodiment includes an upper cross tube assembly 71 and a lower cross tube assembly 72, wherein the upper end of the upper cross tube assembly 71 is pivotally connected to the pair of connecting rod assemblies 50 or the pair of seat tubes 60, the lower end of the upper cross tube assembly 71 is pivotally connected to the pair of bottom tubes 40, the front end of the lower cross tube assembly 72 is correspondingly pivotally connected to the front ends of the pair of bottom tubes 40, and the rear end of the lower cross tube assembly 72 is slidably connected to the pair of bottom tubes 40.

More specifically, the upper cross pipe assembly 71 includes a first cross pipe 711 and a second cross pipe 712 which are crosswise arranged and pivoted to each other, and both are pivoted to the eighth pivot point A8, and in this embodiment, the upper ends of the first cross pipe 711 and the second cross pipe 712 and the pair of seat pipes 60 are respectively pivoted to the ninth pivot point A9, and the lower ends of the first cross pipe 711 and the second cross pipe 712 and the pair of bottom pipes 40 are respectively pivoted to the tenth pivot point a10.

Correspondingly, the lower cross tube assembly 72 includes a third cross tube 721 and a fourth cross tube 722 which are crossed and pivoted with each other, both of which are pivoted at the eleventh pivot point a11, the front ends of the third cross tube 721 and the fourth cross tube 722 are respectively pivoted with the pair of bottom tubes 40 at the twelfth pivot point a12, and the rear ends of the third cross tube 721 and the fourth cross tube 722 are respectively connected with the pair of bottom tubes 40 in a sliding manner.

Continuing to refer to fig. 1-2, the stroller 1 further comprises a pair of sliding sleeves 41, a sliding sleeve 41 is correspondingly slidably connected to a bottom tube 40, the rear ends of the third cross tube 721 and the fourth cross tube 722 are respectively pivoted to the sliding sleeves 41, and the third cross tube 721, the fourth cross tube 722 and the sliding sleeve 41 are respectively pivoted to the thirteenth pivot point a13. In addition, the lower end of the rear support tube 30 is also pivotally connected to the sliding sleeve 41, and the rear support tube 30 is slidably connected to the bottom tube 40 through the sliding sleeve 41.

As shown in fig. 1-2, during the folding process of the stroller 1, the third cross tube 721 and the fourth cross tube 722 pivot with each other to draw the pair of bottom tubes 40 together, and the first cross tube 711 and the second cross tube 712 pivot with each other to draw the pair of handles 10 together and draw the pair of front legs 20 together to fold the stroller 1 in the lateral direction.

As shown in fig. 1-2 and 10-11, the stroller 1 further includes a handle connecting mechanism 80 and a pair of frame locking mechanisms 90, the handle connecting mechanism 80 is pivotally connected between the pair of handles 10, each frame locking mechanism 90 is disposed between the pivotally connected handle 10 and a front leg 20 for locking the stroller 1 in the unfolded state, and the two frame locking mechanisms 90 are respectively connected to the handle connecting mechanism 80, when the handle connecting mechanism 80 is unlocked and pivoted relative to the handle 10, the frame locking mechanism 90 is unlocked, and the stroller 1 can be folded by operating the handle connecting mechanism 80 with a single hand, so that the folding operation is more convenient.

Referring now to fig. 10 in conjunction with fig. 4-7, the rider coupling mechanism 80 includes a transverse link 81, a rider link 82, a fixed member 83, a traction member 84, and a rider locking assembly 85. The two rider connecting members 82 are respectively fixed to the upper ends of the pair of riders 10, the two ends of the transverse connecting member 81 are respectively pivoted to the pair of rider connecting members 82, the two fixing members 83 are respectively fixed to the two ends of the transverse connecting member 81 and are respectively connected to a traction member 84, and the other end of the traction member 84 is connected to a frame locking mechanism 90 (see fig. 10). In addition, the handle locking assembly 85 is disposed on the transverse connecting member 81 to lock the handle locking assembly 85, when the handle locking assembly 85 is unlocked, the transverse connecting member 81 can pivot relative to the two handle connecting members 82, so as to drive the two fixing members 83 to pivot synchronously, and the frame locking mechanism 90 is pulled by the traction member 84 to unlock, and meanwhile, the transverse connecting members 81 can pivot and draw close to each other (detailed below), so as to realize transverse folding of the stroller 1, and facilitate folding operation of the stroller 1.

As shown in fig. 4-5, the transverse connecting member 81 further includes a first rod 811 and a second rod 812 pivotally connected to each other, the handlebar locking assembly 85 is disposed at the pivotal connection of the first rod 811 and the second rod 812 for locking the handlebar, and ends of the first rod 811 and the second rod 812, which are far away from the handlebar locking assembly 85, are pivotally connected to the handlebar connecting member 82 respectively. When the locking assembly 85 is unlocked, the first lever 811 and the second lever 812 are pushed to pivot and move closer to each other, and at the same time, the first lever 811 and the second lever 812 pivot relative to the handlebar connecting member 82 and pull the pulling member 84.

Referring to fig. 6-7, the first rod 811, the second rod 812 and the rider connecting member 82 have the same connecting structure, and the first rod 811 is taken as an example for description. As shown in fig. 6, one end of the first bar 811 is provided with a first pivot plane 8111, the first pivot plane 8111 is provided with an engaging hole 8112 corresponding to the shape of the fixing element 83, and the fixing element 83 is fastened and connected in the engaging hole 8112 and protrudes out of the first pivot plane 8111. As shown in fig. 7, a second pivot plane 821 matched with the first pivot plane 8111 is disposed at an end of the rider connector 82 away from the rider 10, an arc-shaped sliding slot 822 is disposed on the second pivot plane 821, and the fixing member 83 is slidably clamped in the sliding slot 822. When the first link 811 pivots relative to the rider link 82, the first link 811 carries the fixed member 83 to slide in the sliding groove 822 in the direction indicated by the arrow F in fig. 7, thereby pulling the towing member 84 upward of the rider 10.

Referring now to fig. 4 and 8-9, the rider lock assembly 85 includes a first rotational joint 851, a second rotational joint 852, a positioning member 853, a resilient member 854, and a release button 855. The first rotating joint 851 is disposed at one end of the first rod 811 far away from the handlebar connecting member 82, two side surfaces of the first rotating joint 851 are respectively provided with a first accommodating groove 8511 and a mounting hole 8512, the second rotating joint 852 is disposed at one end of the second rod 812 far away from the handlebar connecting member 82 and is provided with a second accommodating groove 8521, the first rotating joint 851 and the second rotating joint 852 are pivotally connected through a pivot shaft, the first accommodating groove 8511 and the second accommodating groove 8521 correspond to each other, the positioning member 853 slidably penetrates through the pivot shaft and is accommodated in the first accommodating groove 8511 and the second accommodating groove 8521, the elastic member 854 abuts against between the positioning member 853 and the second rotating joint 852, and the release button 855 is slidably connected to the first rotating joint 851 and is accommodated in the mounting hole 8512. When the positioning member 853 is engaged with the first rotating joint 851 and the second rotating joint 852, the rider locking assembly 85 is locked, and when the release button 855 is pressed to push the positioning member 853 to disengage from the first rotating joint 851, the rider locking assembly 85 is released, in which the elastic member 854 is compressed, and when the release button 855 is released, the elastic member 854 is deformed to drive the positioning member 853 to reset.

It will be understood that the release button 855 is connected to the second rotary joint 852 and the elastic member 854 is disposed between the positioning member 853 and the first rotary joint 851, which also does not affect the function of the rider lock assembly 85.

In this embodiment, the first rotating joint 851 and the first rod 811, and the second rotating joint 852 and the second rod 812 are integrally formed, but not limited thereto.

As shown in fig. 8-9, the positioning element 853 is provided with a plurality of positioning teeth 8531, inner walls of the first receiving groove 8511 and the second receiving groove 8521 are respectively provided with a plurality of positioning grooves (not numbered) corresponding to the positioning teeth 8531, and when the positioning element 853 is in the locking position, the positioning teeth 8531 thereon are engaged with the positioning grooves on the inner walls of the first receiving groove 8511 and the second receiving groove 8521.

Referring to fig. 10-11, each frame locking mechanism 90 includes a first pivot member 91, a second pivot member 92 and a locking member 93, the first pivot member 91 is fixed to the upper end of the front leg 20 and has a locking notch 911 formed thereon, the second pivot member 92 is fixed to the lower end of the rider 10 and has a slot 921 formed thereon, the first pivot member 91 is clamped in the slot 921 and pivotally connected to the second pivot member 92, and the locking member 93 is slidably disposed in the rider 10 and connected to the traction member 84. When the locking member 93 abuts against the engaging notch 911, the frame locking mechanism 90 is in a locked state, and when the traction member 84 pulls the locking member 93 to disengage from the engaging notch 911, the frame locking mechanism 90 releases the lock, so that the stroller 1 can be folded.

Referring now to fig. 12-14, another embodiment of the stroller 1 of the present invention differs from the previous embodiment only in that: the lower end of the lower link 52 is not pivoted to the bottom tube 40, but is pivoted to the fifth pivot point A5 with the middle part of the rear supporting tube 30; in the present embodiment, the upper ends of the first cross pipe 711 and the second cross pipe 712 are respectively pivoted to the ninth pivot point A9 with the pair of lower links 52. The structure and connection of the other parts of the stroller 1 are the same as those of the above embodiments, and are not repeated.

The collapsing process of the stroller 1 of this embodiment will be described with reference to fig. 1-14.

First, the rider coupling mechanism 80 is unlocked. Referring specifically to fig. 4-5 and 8-9, when the positioning member 853 is disengaged from the positioning groove of the first rotary joint 851, the first rotary joint 851 and the first rotary joint 851 are pushed to pivot relative to each other by pushing the lock release button 855, so that the first lever 811 and the second lever 812 move downward and approach each other (as shown in fig. 5). Meanwhile, the first rod 811 and the second rod 812 pivot relative to the handle connector 82 respectively, and drive the fixing member 83 to slide in the sliding slot 822 along the direction indicated by the arrow F in fig. 7, so that the locking member 93 is pulled by the pulling member 84 to move upward along the handle 10, and when the locking member 93 is disengaged from the engaging notch 911 of the first pivot member 91, the frame locking mechanism 90 is unlocked, and the stroller 1 can be folded.

Then, the handle linkage 80 is pushed toward the front wheel of the stroller 1, so that the handle 10 rotates downward around the first pivot point A1 and approaches the front leg 20, and simultaneously the front leg 20 rotates downward around the second pivot point A2 and approaches the bottom tube 40, thereby pivoting the upper end of the rear support tube 30 around the third pivot point A3, pivoting the lower end of the rear support tube 30 relative to the sliding sleeve 41, and simultaneously pushing the sliding sleeve 41 to slide along the bottom tube 40, so that the rear support tube 30 approaches the bottom tube 40 gradually (see fig. 14). During the downward pivoting process of the rider 10, the upper link 51 is driven to move, so that the upper link 51 and the lower link 52 pivot around the fourth pivot point A4, the fifth pivot point A5 and the seventh pivot point A7, respectively, and the upper link 51 further drives the seat tube 60 to pivot to close to the front leg 20. The stroller 1 is folded longitudinally by pivoting the handle 10, the front leg 20, the rear support tube 30, the bottom tube 40, the link assembly 50, and the seat tube 60 relative to each other, and after folding, the handle connecting mechanism 80 is close to the front wheel, and the handle 10, the front leg 20, and the bottom tube 40 are substantially parallel, as shown in fig. 3.

During the folding process of the stroller 1, when the sliding sleeve 41 slides along the bottom tubes 40 toward the rear wheels, the third cross tube 721 and the fourth cross tube 722 are pulled to move along with the bottom tubes 40 and rotate around the thirteenth pivot point a13, and further the third cross tube 721 and the fourth cross tube 722 are pivoted close to each other around the eleventh pivot point a11 therebetween, and the front ends of the third cross tube 721 and the fourth cross tube 722 are pivoted around the twelfth pivot point a12 respectively to pull the bottom tubes 40 close to each other (see fig. 1-2 and 13-14). In the process of mutually closing the two bottom tubes 40, the first cross tube 711 and the second cross tube 712 pivoted with the bottom tubes are driven to pivot around the tenth pivot point a10, and simultaneously the first cross tube 711 and the second cross tube 712 pivot around the eighth pivot point A8 between the two, the upper ends of the first cross tube 711 and the second cross tube 712 rotate around the ninth pivot point A9 and the pair of lower links 52 are closed, so that the pair of front legs 20 and the pair of handrails 10 are pulled to respectively close, and the baby stroller 1 is transversely folded (see fig. 1-2 and 12-13). The folded stroller 1 has a smaller volume and is convenient to carry and store, as shown in fig. 3.

When the stroller 1 is opened, the rider 10 is pulled to pivot upward relative to the front leg 20, the rider 10 moves the front leg 20 upward, the front leg 20 moves and pivots the rear support tube 30, and the lower end of the rear support tube 30 pulls the sliding sleeve 41 to slide along the bottom tube 40 in the front wheel direction. In the above process, the sliding sleeve 41 slides to push the third cross tube 721 and the fourth cross tube 722 to pivot and unfold each other, and further push the pair of bottom tubes 40 away from each other to open the stroller 1 laterally; at the same time, the first and

second cross pipes

711 and 712 are driven to pivot and unfold, so as to push the pair of connecting rod assemblies 50 to open laterally.

In addition, after the locking of the cart handle locking assembly 85, the first rotating joint 851 and the second rotating joint 852 are pulled upwards, so that the first rod member 811 and the second rod member 812 are mutually pivoted to push the pair of cart handles 10 to be transversely opened, and further the transverse opening of the cart 1 is realized; after the first and

second levers

811, 812 are substantially aligned, release button 855 is released to re-lock the rider locking assembly 85, thereby locking the rider 10. In the process of pivoting and opening the first rod 811 and the second rod 812, the two rods drive the fixing member 83 to slide in the sliding slot 822 in the opposite directions indicated by the arrow F in fig. 7, so as to release the pulling force on the pulling member 84, and the locking member 93 is engaged with the engaging notch 911 of the second pivot member 92 again, thereby locking the stroller 1 in the unfolded state.

In summary, in the stroller 1 of the present invention, the handle 10, the front leg 20, the rear support tube 30 and the bottom tube 40 are pivotally connected to each other, the connecting rod assembly 50 is pivotally connected between the handle 10 and the rear support tube 30 or between the handle 10 and the bottom tube 40, meanwhile, an upper cross tube assembly 71 which is pivotable is pivotally connected between the connecting rod assembly 50 and the bottom tube 40, and a lower cross tube assembly 72 which is pivotable is pivotally connected between the bottom tubes 40; therefore, during folding, the stroller 10, the front legs 20, the rear supporting tubes 30 and the bottom tubes 40 are pushed to pivot with each other to fold the stroller 1 longitudinally, in this process, the upper cross tube assembly 71 and the lower cross tube assembly 72 pivot with each other to drive the pair of bottom tubes 40, the pair of stroller 10 and the pair of front legs 20 to respectively draw close, so as to fold the stroller 1 transversely, so that the folded stroller 1 has a smaller size, is convenient to carry and store, and is simple and convenient to fold.

The construction of the remainder of the stroller 1 according to the present invention is well known to those skilled in the art and will not be described in detail herein.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. A stroller, comprising:

a pair of bottom tubes each having one end connected to the rear wheel;

the pair of front legs are correspondingly pivoted on the bottom pipe, and the front legs are connected with front wheels;

a pair of vehicle hands which are correspondingly pivoted on the front feet respectively;

a pair of connecting rod assemblies, one end of each connecting rod assembly is pivoted to the handlebar, and the other end of each connecting rod assembly is pivoted to the bottom tube;

the transverse connecting mechanism comprises an upper cross pipe assembly and a lower cross pipe assembly, two ends of the upper cross pipe assembly are respectively pivoted to the pair of connecting rod assemblies and the pair of bottom pipes, one end of the lower cross pipe assembly is pivoted between the pair of bottom pipes, and the other end of the lower cross pipe assembly is slidably connected to the pair of bottom pipes;

the handlebar connecting mechanism is pivoted between the pair of handlebars;

the frame locking mechanism is arranged between the driver and the front leg and connected to the driver connecting mechanism;

the handlebar connecting mechanism comprises a transverse connecting piece pivoted between the handlebars, a handlebar locking assembly arranged on the transverse connecting piece, a traction piece connected between the frame locking mechanism and the transverse connecting piece, and a fixing piece fixed at two ends of the transverse connecting piece and connected with one end of the traction piece, wherein the other end of the traction piece is connected with the frame locking mechanism, the handlebars are provided with sliding grooves corresponding to the fixing piece, the fixing piece protrudes out of the transverse connecting piece and is clamped in the sliding grooves in a sliding way, the transverse connecting piece is provided with clamping holes corresponding to the shape of the fixing piece, the fixing piece is fixedly connected in the clamping holes, and after the handlebar locking assembly is unlocked, the transverse connecting piece can be pivoted relative to the handlebars, so that the transverse connecting piece drives the fixing piece to pivot synchronously and slide in the sliding grooves, and further pulls the traction piece and pulls the frame locking mechanism to unlock by the traction piece.

2. The stroller of claim 1, further comprising a pair of seat tubes, one of said seat tubes pivotally connected to a respective one of said front legs and one of said link assemblies, said upper cross tube assembly upper end being pivotally connected to a pair of said seat tubes.

3. The stroller of claim 1, wherein each of said link assemblies includes an upper link pivotally connected to said handle and a lower link pivotally connected to said base tube.

4. The stroller of claim 2, wherein the upper cross tube assembly comprises a first cross tube and a second cross tube disposed in a cross and pivotally connected to each other, wherein upper ends of the first cross tube and the second cross tube are pivotally connected to the pair of link assemblies or the pair of seat tubes, respectively, and lower ends of the first cross tube and the second cross tube are pivotally connected to the pair of bottom tubes, respectively.

5. The stroller of claim 1, wherein the lower cross-tube assembly includes third and fourth cross-tubes disposed in a cross-like configuration and pivotally connected to each other, one end of each of the third and fourth cross-tubes being pivotally connected to a respective one of the pair of base tubes, and the other end of each of the third and fourth cross-tubes being slidably connected to a respective one of the pair of base tubes.

6. The stroller as recited in claim 1, further comprising a pair of sliding sleeves, each of said sliding sleeves being slidably connected to a corresponding one of said base tubes, said lower cross tube assembly being pivotally connected to said sliding sleeves.

7. The stroller of claim 1, further comprising a pair of rear support tubes, one of said rear support tubes being disposed between one of said base tubes and one of said linkage assemblies, and said rear support tubes having upper ends pivotally connected to said front legs and lower ends connected to said base tubes.

8. The stroller of claim 7, further comprising a pair of sliding sleeves, each sliding sleeve being slidably coupled to a corresponding one of said base tubes, said rear support tube being pivotally coupled to said sliding sleeves.

9. The stroller of claim 1, wherein said frame locking mechanism comprises a locking member slidably disposed within said handle and coupled to said handle coupling mechanism, said locking member detachably engaging said front leg.

10. The stroller of claim 9, wherein the frame locking mechanism further comprises a first pivot member fixed to the front leg and having a locking notch corresponding to the locking member, the locking member being detachably engaged with the locking notch.

11. The stroller as recited in claim 10, wherein the frame locking mechanism further comprises a second pivot member secured to the rider and defining a slot, the first pivot member being captured within the slot and pivotally connected to the second pivot member.

12. The stroller as recited in claim 1, wherein said handle coupling mechanism further comprises a pair of handle links fixed to a pair of said handles, respectively, and said transverse link is pivotally connected at opposite ends thereof to said handle links, respectively.

13. The stroller of claim 1, wherein the transverse link comprises a first link and a second link pivotally connected to each other, and the handlebar locking assembly is disposed at the pivotal connection of the first link and the second link.

14. The stroller of claim 13, wherein said handle lock assembly comprises:

the first rotating joint is arranged at one end of the first rod piece and is provided with a first accommodating groove;

the second rotating joint is arranged at one end of the second rod piece and is pivoted with the first rotating joint, and the second rotating joint is provided with a second accommodating groove corresponding to the first accommodating groove;

the positioning piece is arranged in the first accommodating groove and the second accommodating groove in a sliding mode, when the positioning piece is clamped with the first rotating joint and the second rotating joint, the handlebar locking assembly is locked, and when the positioning piece slides to be separated from the first rotating joint or the second rotating joint, the handlebar locking assembly is unlocked.

15. The stroller of claim 14, wherein the positioning member has a plurality of positioning teeth protruding therefrom, and the first receiving groove and the second receiving groove have a plurality of positioning grooves formed on inner walls thereof, respectively, corresponding to the positioning teeth.

16. The stroller of claim 14, wherein the handlebar locking assembly further comprises a lock release button slidably coupled to the first pivot joint or the second pivot joint for actuating the positioning member to slidably release the lock.

17. The stroller of claim 16, wherein the handle lock assembly further comprises a resilient member abutting the positioning member for urging the positioning member to return to the locked position.