CN109515507B

CN109515507B - Child cart frame and child cart

Info

Publication number: CN109515507B
Application number: CN201710843657.8A
Authority: CN
Inventors: 刘修平
Original assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO LTD
Current assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO LTD
Priority date: 2017-09-19
Filing date: 2017-09-19
Publication date: 2024-04-09
Anticipated expiration: 2037-09-19
Also published as: CN109515507A; WO2019056436A1

Abstract

The invention relates to a stroller frame and a stroller, wherein the stroller frame comprises a front foot rod (1), a rear foot rod (2), a handle rod (3), a sliding piece (4) and a folding mechanism, wherein the rear foot rod is respectively and rotatably connected with the front foot rod and the handle rod, the sliding piece is arranged on the handle rod and can slide relative to the handle rod, and the folding mechanism is rotatably connected with the sliding piece so as to drive the front foot rod and the handle rod to be respectively close to the rear foot rod through the folding mechanism when the sliding piece slides relative to the handle rod, thereby realizing folding of the stroller frame. Compared with the prior art that the sliding piece is arranged at the front foot rod, the rear foot rod or the connecting point of the front foot rod and the rear foot rod, the sliding piece is arranged on the handle rod, the height of the sliding piece relative to the ground is higher, the force application of an operator is more convenient, the unlocking operation of the sliding piece is more convenient and quicker, and the operability of the structure is stronger for an operator who holds a child in one hand and can only operate with one hand.

Description

Child cart frame and child cart

Technical Field

The invention relates to the technical field of child carts, in particular to a child cart frame and a child cart.

Background

With the development of society, the baby carriage has become a necessary tool for infants to travel. Parents pay more attention to the characteristics of easy folding, small size, convenient storage and the like of the child cart besides pursuing the basic requirements of safety and stability of the child cart. In view of this, at present, the child cart generally has a foldable function, and when in use, the cart is unfolded, and when not in use, the cart is folded, so that the child cart is convenient to carry, and the occupied space is reduced.

The existing foldable baby carriage frames are various, but most of the frames are complex in structure and inconvenient to fold, and some of the frames can be folded only by means of a specification, so that time and labor are wasted, and the practical operability is poor; some frames are still large in size even after being folded, are inconvenient to place and store, and cannot meet the demands of users.

Disclosure of Invention

The invention aims to provide a child trolley frame and a child trolley, so as to improve the operation convenience of the child trolley frame during folding.

In order to achieve the above object, the present invention provides a stroller frame, which includes a front leg, a rear leg, a handle bar, a sliding member and a folding mechanism, wherein the rear leg is rotatably connected with the front leg and the handle bar, respectively, the sliding member is disposed on the handle bar and is capable of sliding relative to the handle bar, and the folding mechanism is rotatably connected with the sliding member, so that the front leg and the handle bar are driven to be respectively drawn close to the rear leg by the folding mechanism when the sliding member slides relative to the handle bar, thereby realizing folding of the stroller frame.

Further, the folding mechanism comprises a driving piece, and the driving piece is rotatably connected between the sliding piece and the rear foot rod, so that the driving piece drives the handle rod to close to the rear foot rod when the sliding piece slides relative to the handle rod.

Further, the folding mechanism further comprises a first connecting rod, and the first connecting rod is rotatably connected between the driving piece and the front foot rod, so that the front foot rod is driven to be close to the rear foot rod through the first connecting rod when the driving piece moves.

Further, the driving member includes a first lever and a second lever rigidly connected, an end of the first lever being rotatably connected to the slider, an end of the second lever being rotatably connected to the first link, and the rear foot lever being rotatably connected to the rigid connection point of the first lever and the second lever.

Further, when the frame is in the unfolded state, the included angle between the second rod and the first connecting rod is 180 degrees.

Further, the included angle between the first rod and the second rod is a right angle or an obtuse angle.

Further, the handle bar can slide the sliding piece backwards along the handle bar when being pressed down, so that the handle bar is turned downwards and is close to the rear foot bar.

Further, the bicycle comprises a connecting piece, the handle rod and the rear foot rod are rotatably connected at a first connecting point of the connecting piece, and the front foot rod is rotatably connected at a second connecting point of the connecting piece.

Further, the connecting piece is a plastic piece.

Further, the handle bar is "L" shaped and has a short bar and a long bar, the end of the short bar being rotatably connected to the rear foot bar, and the slider being provided on the long bar.

Further, the device also comprises a first locking mechanism, wherein when the first locking mechanism is in a locking state, the sliding piece is fixed relative to the handle rod; when the first locking mechanism is in an unlocked state, the sliding piece can slide relative to the handle bar.

Further, the first locking mechanism is arranged at the joint between the sliding piece and the handle bar; alternatively, the first locking mechanism is provided at the top hand grip of the handle bar.

Further, the handle bar includes an upper section and a lower section rotatably coupled therebetween such that the upper section can be flipped and folded forward relative to the lower section.

Further, the device also comprises a second locking mechanism, wherein when the second locking mechanism is in a locking state, the upper section and the lower section are relatively and fixedly connected; when the second locking mechanism is in an unlocked state, the upper section can be turned and folded forward relative to the lower section.

Further, the second locking mechanism comprises a sliding sleeve, the upper section and the lower section are connected through the sliding sleeve in a sleeved mode, and the upper section and the lower section can be locked or unlocked relatively through sliding of the sliding sleeve.

Further, the handlebar comprises an upper section and a lower section, the frame further comprises a first locking mechanism for locking the sliding piece and the handlebar and a second locking mechanism for locking the upper section and the lower section, an unlocking device is arranged at the hand-held part at the top end of the upper section, and the first locking mechanism and/or the second locking mechanism can be unlocked by operating the unlocking device.

Further, the unlocking device is connected with the second locking mechanism through the first flexible piece, and the upper section is connected with the first locking mechanism through the second flexible piece, so that the second locking mechanism is pulled to unlock through the first flexible piece when the unlocking device is operated, and the first locking mechanism is pulled to unlock through the second flexible piece after the upper section is overturned and folded relative to the lower section.

Further, the unlocking device is connected with the first locking mechanism and the second locking mechanism through the flexible member, so that the first locking mechanism and the second locking mechanism are simultaneously unlocked by pulling the flexible member when the unlocking device is operated.

Further, the folding device also comprises a seat rod group and a second connecting rod, wherein the seat rod group is rotatably connected with the sliding piece through the second connecting rod, so that the seat rod group is driven to fold through the second connecting rod when the sliding piece slides relative to the handle rod.

Further, the seat bar group includes a leg rest, a seat bar and a back rest, one end of the seat bar is rotatably connected with the leg rest, the other end of the seat bar is rotatably connected with the back rest, and the second link is rotatably connected with the seat bar, so that the seat bar and the leg rest are driven to be close to the back rest through the second link when the sliding piece slides relative to the handle bar, thereby realizing folding of the seat bar group.

The invention further provides a child stroller for achieving the purpose, and the child stroller comprises the child stroller frame.

Based on the technical scheme, the sliding part is arranged on the handle bar, and the folding mechanism can drive the front foot bar and the handle bar to be respectively close to the rear foot bar when the sliding part slides relative to the handle bar, so that the folding of the frame is realized. Compared with the prior art that the sliding piece is arranged at the front foot rod, the rear foot rod or the connecting point of the front foot rod and the rear foot rod, the sliding piece is arranged on the handle rod, the height of the sliding piece relative to the ground is higher, the force application of an operator is more convenient, the unlocking operation of the sliding piece is more convenient and quicker, and the operability of the structure is stronger for an operator who holds a child in one hand and can only operate with one hand.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic view of a stroller frame according to an embodiment of the present invention.

Fig. 2 is a schematic view of another angle of the stroller frame of the embodiment of fig. 1.

FIG. 3 is a side view of one embodiment of the stroller frame of the present invention in an expanded state.

Fig. 4 is a schematic view of the stroller frame according to the embodiment of fig. 3 in a first state during folding.

Fig. 5 is a schematic view showing a second state structure of the stroller frame during folding in the embodiment of fig. 3.

Fig. 6 is a schematic view of the child stroller frame according to the embodiment of fig. 3 in a third state during folding.

Fig. 7 is a schematic view of the stroller frame of the embodiment of fig. 3 in a fully folded state.

Fig. 8 is a side view of another embodiment of the stroller frame of the present invention in an expanded state.

Fig. 9 is a schematic view showing a first state structure of the stroller frame during folding in the embodiment of fig. 8.

Fig. 10 is a schematic view showing a second state structure of the stroller frame during folding in the embodiment of fig. 8.

Fig. 11 is a schematic view of the stroller frame of the embodiment of fig. 8 in a fully folded state.

In the figure:

1. a forefoot lever; 2. a rear foot bar; 3. a handle bar; 31. an upper section; 32. a lower section; 4. a slider; 5. a driving member; 6. a first link; 7. a connecting piece; 8. a first locking mechanism; 9. a second locking mechanism; 10. unlocking means; 11. a cross bar; 12. a leg rest; 13. a seat post; 14. a back rest lever; 15. and a second link.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

As shown in fig. 1 and 2, in an exemplary embodiment of the stroller frame provided by the present invention, the stroller frame includes a front leg bar 1, a rear leg bar 2, a handle bar 3, a sliding member 4, and a folding mechanism, the rear leg bar 2 is rotatably connected to the front leg bar 1 and the handle bar 3, respectively, the sliding member 4 is disposed on the handle bar 3 and is capable of sliding relative to the handle bar 3, and the folding mechanism is rotatably connected to the sliding member 4, so that the folding mechanism drives the front leg bar 1 and the handle bar 3 to be drawn toward the rear leg bar 2, respectively, when the sliding member 4 slides relative to the handle bar 3, thereby achieving folding of the stroller frame.

In the above-described exemplary embodiment, by providing the slider 4 and providing the slider 4 on the handlebar 3, the front foot bar 1 and the handlebar 3 can be driven to be respectively drawn toward the rear foot bar 2 by the folding mechanism when the slider 4 slides relative to the handlebar 3, thereby achieving folding of the vehicle frame. Compared with the prior art, the sliding piece is arranged at the front foot rod, the rear foot rod or the connecting point of the front foot rod and the rear foot rod, the sliding piece is arranged on the handle rod in the embodiment, the sliding piece is higher than the ground in height, the operator can apply force more conveniently, the operation of unlocking the sliding piece is more convenient and quick, and the operability of the structure is stronger for the operator who holds the child in one hand and can only operate in one hand.

Specifically, the folding mechanism includes a driving member 5, where the driving member 5 is rotatably connected between the sliding member 4 and the rear leg 2, so that the driving member 5 drives the handle bar 3 to close to the rear leg 2 when the sliding member 4 slides relative to the handle bar 3.

By arranging the driving piece 5, when the sliding piece 4 slides relative to the handle bar 3, the sliding piece 4 can drive the driving piece 5 connected with the sliding piece to rotate around a connection point between the driving piece 5 and the rear foot bar 2, and the rotation of the driving piece 5 can further drive the handle bar 3 to be close to the rear foot bar 2, so that labor is saved and convenience is realized; in addition, when the stroller frame is in the unfolded state, the driving piece 5 can also support the handle bar 3, so that the structural strength of the stroller frame is improved.

Further, the folding mechanism further comprises a first connecting rod 6, and the first connecting rod 6 is rotatably connected between the driving piece 5 and the front foot rod 1, so that the front foot rod 1 is driven to be close to the rear foot rod 2 through the first connecting rod 6 when the driving piece 5 moves.

Through setting up first connecting rod 6, when slider 4 slides for handlebar 3, can drive driving piece 5 rotation, can drive the first connecting rod 6 rotation rather than being connected when driving piece 5 rotation, and the rotation of first connecting rod 6 can further drive preceding foot pole 1 and draw close to back foot pole 2, and then realizes the folding of frame.

In the above-described embodiment, the structural form of the driving member 5 may be variously selected as long as the function thereof can be achieved. For example, the driving member 5 may have a triangle structure, and three corner ends of the driving member 5 are rotatably connected to the slider 4, the rear foot bar 2, and the first link 6, respectively. In another embodiment, the driving member 5 comprises a first and a second rigidly connected rod, the end of the first rod being rotatably connected to the slider 4, the end of the second rod being rotatably connected to the first link 6, the rear foot bar 2 being rotatably connected to the rigid connection point of the first and second rods.

The driving piece 5 is arranged as two rods which are rigidly connected, so that the occupied space can be reduced, interference between the driving piece 5 and other parts of the frame is avoided, and the total weight of the frame can be reduced.

Preferably, the length of the first rod is longer than that of the second rod, so that the gap between the handle bar 3 and the rear foot bar 2 is larger, and the requirement of the inclination angle of the handle bar 3 is met.

The angle between the second rod and the first link 6 is preferably, but not limited to, 180 ° when the frame is in the unfolded state. Therefore, when the first connecting rod 6 is folded upwards after the driving piece 5 starts to rotate during folding, the first connecting rod 6 does not need to retreat along the direction of transversely approaching the front foot rod 1, the operation space of the first connecting rod 6 is reduced, and the operability is stronger.

The angle between the first and second bars is preferably, but not limited to, a right angle or an obtuse angle. The included angle between the first rod and the second rod is a right angle, so that the handle rod 3 can be better supported; the included angle between the first rod and the second rod is an obtuse angle, and after the sliding piece 4 is unlocked, the handle rod 3 can be pressed downwards more effort-saving, so that the sliding piece 4 can slide relative to the handle rod 3; and the included angle is difficult to cause the clamping shell when obtuse, so that the sliding piece can slide relatively more smoothly, and the folding efficiency is effectively improved.

In the above embodiments, the sliding of the sliding member 4 with respect to the handlebar 3 can be achieved by a variety of different operation modes when the frame is folded, such as pressing down the handlebar 3 or pushing the rear foot bar 2 forward, etc.; for the folding action of the frame, there may be various forms, for example, the handlebar 3 and the front foot bar 1 may be folded toward the rear foot bar 2 in the same turning direction (for example, both clockwise and counterclockwise), or may be folded toward the rear foot bar 2 in the opposite turning direction (for example, the handlebar 3 is folded back in the clockwise and the front foot bar 1 is folded back in the counterclockwise).

Preferably, the handle bar 3 is capable of sliding the slider 4 backward along the handle bar 3 when subjected to a pressing force, so that the handle bar 3 is turned down and brought close to the rear foot bar 2. Namely, the handle bar 3 is close to the rear foot bar 2 backwards in the clockwise direction, and the front foot bar 1 is close to the rear foot bar 2 backwards in the clockwise direction, so that the handle bar 3 is pressed downwards, the stress point is a rear wheel touchdown point, the handle bar is relatively easy to force, and an operator applies downward pressure on the far end of the handle bar 3, so that the force arm is long and saves more labor; if the handle bar 3 is turned forwards, which is equivalent to directly lifting the weight of the whole frame, the weight of the rear foot bar 2 and the wheels are used for triggering the folding point to rotate, and the labor is wasted.

In addition, the stroller frame can further comprise a connecting piece 7, the handle bar 3 and the rear foot bar 2 are rotatably connected at a first connecting point of the connecting piece 7, and the front foot bar 1 is rotatably connected at a second connecting point of the connecting piece 7. By arranging the connecting pieces 7, the stress can be dispersed, the gap between each connecting point can be increased, and the gap between two adjacent rod pieces can be increased when the connecting pieces are folded, so that fingers of an operator or a child can be prevented from being clamped in the folding process.

Preferably, the connecting piece 7 is a plastic piece, which can reduce weight while satisfying structural strength.

In a preferred embodiment of the stroller frame of the present invention, the handlebar 3 is "L" shaped and has a short bar with a short length and a long bar with a long length, the ends of the short bar being rotatably connected to the rear foot bar 2, and the slider 4 is provided on the long bar. The handle bar 3 is L-shaped, so that the driving piece 5 can be conveniently arranged, and the folding is more convenient.

In another embodiment of the stroller frame of the present invention, the stroller frame further comprises a first locking mechanism 8, wherein the sliding member 4 is fixed relative to the handlebar 3 when the first locking mechanism 8 is in the locked state, and wherein the sliding member 4 cannot slide relative to the handlebar 3; the slider 4 is slidable with respect to the handle bar 3 when the first locking mechanism 8 is in the unlocked state. By providing the first locking mechanism 8, the locking and unlocking of the sliding part 4 can be controlled, and the safety of the frame is ensured.

Preferably, the first locking mechanism 8 may be provided at the connection between the slider 4 and the handle bar 3; alternatively, the first locking mechanism 8 may be provided on the top hand grip of the handle bar 3 to facilitate the operation of the operator.

In a further embodiment of the stroller frame of the present invention, the handlebar 3 comprises an upper section and a lower section, which are rotatably connected to each other so that the upper section can be flipped and folded forward with respect to the lower section. The handle bar 3 is arranged in a two-section mode, so that the frame can realize a three-fold structure, the folded volume is smaller, the occupied space is smaller, and the carrying and the storage are more convenient.

Further, the stroller frame further comprises a second locking mechanism 9, when the second locking mechanism 9 is in a locked state, the upper section 31 and the lower section 32 are relatively and fixedly connected, and at the moment, the upper section 31 cannot be turned over relative to the lower section 32; the upper section 31 can be turned and folded forward relative to the lower section 32 when the second locking mechanism 9 is in the unlocked state.

Specifically, the second locking mechanism 9 may include a sliding sleeve, where the upper section 31 and the lower section 32 are sleeved and connected by the sliding sleeve, and the upper section 31 and the lower section 32 can be locked or unlocked relatively by sliding the sliding sleeve. The upper section 31 and the lower section 32 are locked or unlocked through the sliding sleeve structure, and the structure is simple and the operation is convenient.

Based on the handlebar 3 comprising an upper section 31 and a lower section 32, the frame further comprises a first locking mechanism 8 for locking the slider 4 with the handlebar 3 and a second locking mechanism 9 for locking the upper section 31 with the lower section 32, the top hand grip of the upper section 31 is provided with an unlocking means 10, by operating the unlocking means 10 the first locking mechanism 8 and/or the second locking mechanism 9 can be unlocked.

Specifically, in one embodiment, the unlocking means 10 may be used only for controlling the unlocking of the second locking mechanism 9. As shown in fig. 3 to 7, the frame of the stroller is in a state change from unfolded to fully folded, before folding, the first locking mechanism 8 is unlocked, the handle bar 3 can be integrally moved towards the rear foot bar 2 by pressing down the handle bar 3 with force, meanwhile, the front foot bar 1 is moved towards the rear foot bar 2 under the drive of the folding mechanism, then the second locking mechanism 9 is unlocked through the unlocking device 10, and the upper section 31 is turned over relative to the lower section 32, so that folding of the handle bar 3 is realized.

In another embodiment, the unlocking means 10 is connected to the second locking mechanism 9 by a first flexible member and the upper section 31 is connected to the first locking mechanism 8 by a second flexible member to pull the second locking mechanism 9 to unlock when the unlocking means 10 is operated and to pull the first locking mechanism 8 by the second flexible member after the upper section 31 is flipped and folded relative to the lower section 32.

When folding, first flexible piece is pulled through unlocking device 10 to make second locking mechanical system 9 unblock, can earlier turn over upper segment 31 forward and fold for lower segment 32 this moment, and after upper segment 31 turns over and folds in place, upper segment 31 can pull the second flexible piece to make first locking mechanical system 8 unblock, can push down handle bar 3 this moment, makes handle bar 3 and preceding foot bar 1 all draw close towards back foot bar 2, realizes the folding of whole frame.

In a further embodiment, the unlocking means 10 is connected to the first locking mechanism 8 and the second locking mechanism 9 by means of flexible members, so that the first locking mechanism 8 and the second locking mechanism 9 are simultaneously unlocked by pulling the flexible members when the unlocking means 10 is operated.

As shown in fig. 9 to 11, the unlocking device 10 can unlock the first locking mechanism 8 and the second locking mechanism 9 at the same time, and when the upper section 31 is folded, the upper section 31 and the lower section 32 can be simultaneously pressed down, so that the upper section 31, the lower section 32 and the front foot bar 1 are all closed towards the rear foot bar 2, and in this way, the unlocking is faster, and the folding efficiency is higher.

Of course, in other embodiments, the unlocking device 10 may be used only for controlling the unlocking of the first locking mechanism 8, which is not described in detail here.

As shown in fig. 8, the stroller frame further includes a seat bar set and a second link 15, where the seat bar set is rotatably connected to the sliding member 4 by the second link 15, so that the seat bar set is folded by the second link 15 when the sliding member 4 slides relative to the handlebar 3.

By arranging the second connecting rod 15, when the sliding piece 4 slides relative to the handle rod 3, the seat rod group can be simultaneously driven to fold besides driving the handle rod 3 and the front foot rod 1 to be close to the rear foot rod 2, so that the folding action is more coherent, and the folding efficiency is higher.

Specifically, the seat bar group includes a leg rest 12, a seat bar 13, and a back rest 14, one end of the seat bar 13 is rotatably connected to the leg rest 12, the other end of the seat bar 13 is rotatably connected to the back rest 14, and a second link 15 is rotatably connected to the seat bar 13 to drive the seat bar 13 and the leg rest 12 to approach the back rest 14 through the second link 15 when the slider 4 slides with respect to the handle bar 3, thereby achieving folding of the seat bar group.

In addition, in order to ensure the overall stability of the frame, a cross bar 11 can be arranged between the two front foot bars 1 arranged on the left side and the right side, and a cross bar 11 can also be arranged between the two rear foot bars 2, so that the structural stability of the frame is improved.

In the above embodiments, the rods in the stroller frame may be solid rods to enhance structural strength; each rod piece can also be a hollow pipe piece so as to reduce the overall weight of the frame.

In the above embodiments, all the embodiments related to "rotatable connection" can adopt a hinged connection mode, which is easy to implement and has high reliability.

Based on the stroller frame, the invention further provides a stroller, and the stroller comprises the stroller frame. The positive technical effects of the stroller frame in the above embodiments are also applicable to the stroller, and are not described herein.

The specific structure and folding process of one embodiment of the stroller frame and stroller of the present invention will be described in detail with reference to fig. 1-11:

as shown in fig. 1 and 2, the stroller frame comprises a front foot bar 1, a rear foot bar 2, a handle bar 3, a slider 4, a driver 5, a first link 6 and a connector 7, wherein the handle bar 3 comprises an upper section 31 and a lower section 32, and the lower section 32 of the handle bar 3 is L-shaped and has a short bar and a long bar; the driving member 5 is also L-shaped and comprises a first rod and a second rod; the sliding piece 4 is sleeved on the long rod of the lower section 32 of the handle rod 3, and the sliding piece 4 can slide relative to the handle rod 3; one end of a first rod of the driving piece 5 is rotatably connected with the sliding piece 4, a connecting point of the first rod and the second rod is rotatably connected with the rear foot rod 2, and the end part of the second rod of the driving piece 5 is rotatably connected with the front foot rod 1 through a first connecting rod 6, wherein the first connecting rod 6 can be connected with the middle upper part of the front foot rod 1; one end of the front foot bar 1, which is close to the upper part, is rotatably connected with the rear foot bar 2; the rear foot rod 2 is rotatably connected with the short rod end part of the lower section 32 of the handle rod 3; wherein the front foot bar 1 can be connected at the second connection point of the connection piece 7, and the rear foot bar 2 and the handle bar 3 are connected at the first connection point of the connection piece 7.

The first locking mechanism is arranged on the sliding piece 4, the second locking mechanism is arranged between the upper section 31 and the lower section 32, and the unlocking device 10 is arranged at the top hand grip part of the upper section 31 of the handle bar 3, so that the operation of an operator is convenient. The two front foot bars 1 are connected through a cross bar 11, and the handle bar 3 is U-shaped, so that a stable frame seat space can be formed.

As shown in fig. 8, the seat bar group includes a leg rest 12, a seat bar 13, and a back rest 14, one end of the seat bar 13 is rotatably connected to the leg rest 12, the other end of the leg rest 12 is a free end, and the leg rest 12 is freely foldable with respect to the seat bar 13; the other end of the seat rod 13 is rotatably connected with the back rest rod 14, and the other end of the back rest rod 14 is connected with the frame through other connecting rods so as to ensure the fixation of the back rest rod 14; when the frame needs to be folded, the connection relation between the back rest bar 14 and other connecting rods can be released, so that the inclination angle of the back rest bar 14 can be adjusted, and the folding is facilitated; the second link 15 is rotatably connected with the seat post 13.

As shown in fig. 3, which is a side view of the stroller frame in a deployed state, the structure such as the seat bar set is omitted; as shown in fig. 4, when the first locking mechanism 8 is unlocked, the handle bar 3 is depressed, so that the slider 4 can slide relative to the lower section 32 of the handle bar 3 in a direction approaching the upper section 31, so that the handle bar 3 can be further drawn toward and folded toward the rear foot bar 2; as shown in fig. 5, during the pressing process of the handle bar 3, the rotation of the driving member 5 may drive the first link 6 to rotate, so as to drive the front foot bar 1 to close and fold toward the rear foot bar 2; as shown in fig. 6, the front foot bar 1 and the handle bar 3 are folded toward the rear foot bar 2; as shown in fig. 7, when the second locking mechanism 9 is unlocked, the upper section 31 of the handle bar 3 can be further folded relative to the lower section 32, so that a tri-fold structure is realized, the frame is completely folded, and the folding volume is small, so that the folding bicycle is convenient to store and carry.

As shown in fig. 8, which is a side view of the stroller frame in a deployed state, a seat post set configuration is included; as shown in fig. 9, when the first locking mechanism 8 and the second locking mechanism 9 are simultaneously unlocked, the upper section 31 can be turned and folded forwards, and simultaneously the upper section 31 of the handle bar 3 is pressed down, so that the sliding piece 4 slides relative to the lower section 32, and the driving piece 5 and the first connecting rod 6 can drive the lower section 32 and the front foot bar 1 to be close to the rear foot bar 2 clockwise and anticlockwise respectively; meanwhile, the seat rod 13 and the leg leaning rod 12 can be driven to be closed and folded towards the back leaning rod 14 through the second connecting rod 15; as shown in fig. 10, which is a folded state view of the handle bar 3 being further depressed, the back rest bar 14 is also closer to the rear foot bar 2; as shown in fig. 11, the leg rest 12 is shown in a fully folded state, and during folding, the leg rest 12 can be rotated relative to the seat bar 13, so that an operator can directly push the leg rest 12 to fold relative to the seat bar 13 by hand.

By way of illustration of various embodiments of the present stroller frame and stroller, it can be seen that the present stroller frame and stroller embodiments have at least one or more of the following advantages:

1. the sliding piece is arranged on the handle rod, the height from the ground is higher, the force application of an operator is more convenient, and the sliding piece is more convenient and quicker to unlock;

2. the handle rod comprises an upper section and a lower section, so that the frame can be folded three times, and the folded frame is smaller in size and convenient to store and carry;

3. through setting up unlocking device, can realize multiple unblock mode, it is more convenient to receive.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims

1. The children's barrow frame is characterized by comprising a front foot rod (1), a rear foot rod (2), a handle rod (3), a sliding piece (4) and a folding mechanism, wherein the rear foot rod (2) is respectively and rotatably connected with the front foot rod (1) and the handle rod (3), the sliding piece (4) is arranged on the handle rod (3) and can slide relative to the handle rod (3), and the folding mechanism is rotatably connected with the sliding piece (4) so as to drive the front foot rod (1) and the handle rod (3) to be close to the rear foot rod (2) respectively through the folding mechanism when the sliding piece (4) slides relative to the handle rod (3), so that the folding of the frame is realized; the folding mechanism comprises a driving piece (5), wherein the driving piece (5) is rotatably connected between the sliding piece (4) and the rear foot rod (2) so as to drive the handle rod (3) to be close to the rear foot rod (2) through the driving piece (5) when the sliding piece (4) slides relative to the handle rod (3); the folding mechanism further comprises a first connecting rod (6), wherein the first connecting rod (6) is rotatably connected between the driving piece (5) and the front foot rod (1) so as to drive the front foot rod (1) to be close to the rear foot rod (2) through the first connecting rod (6) when the driving piece (5) moves; the driving piece (5) comprises a first rod and a second rod which are rigidly connected, wherein the end part of the first rod is rotatably connected with the sliding piece (4), the end part of the second rod is rotatably connected with the first connecting rod (6), and the rear foot rod (2) is rotatably connected with the rigid connecting point of the first rod and the second rod; the handlebar (3) comprises an upper section (31) and a lower section (32), the frame further comprises a first locking mechanism (8) for locking the sliding piece (4) and the handlebar (3) and a second locking mechanism (9) for locking the upper section (31) and the lower section (32), an unlocking device (10) is arranged at the hand-held part at the top end of the upper section (31), and the first locking mechanism (8) and the second locking mechanism (9) can be unlocked by operating the unlocking device (10).

2. A stroller frame according to claim 1, characterized in that the angle between the second rod and the first rod (6) is 180 ° when the frame is in the unfolded state.

3. The stroller frame of claim 1, wherein the angle between the first and second bars is a right angle or an obtuse angle.

4. A stroller frame according to claim 1, characterized in that the handlebar (3) is capable of sliding the slider (4) backwards along the handlebar (3) when subjected to a pressing force, so that the handlebar (3) is turned downwards and is close to the rear foot bar (2).

5. The stroller frame according to claim 1, further comprising a connector (7), wherein the handlebar (3) and the rear foot bar (2) are rotatably connected at a first connection point of the connector (7), and wherein the front foot bar (1) is rotatably connected at a second connection point of the connector (7).

6. The stroller frame according to claim 5, characterized in that the connecting piece (7) is a plastic piece.

7. A stroller frame according to claim 1, characterized in that the handlebar (3) is "L" -shaped and has a short bar and a long bar, the ends of which are rotatably connected to the rear foot bar (2), the slide (4) being arranged on the long bar.

8. The stroller frame according to claim 1, further comprising a first locking mechanism (8), wherein the slide (4) is fixed relative to the handlebar (3) when the first locking mechanism (8) is in a locked state; when the first locking mechanism (8) is in an unlocked state, the sliding piece (4) can slide relative to the handle bar (3).

9. A stroller frame according to claim 8, characterized in that the first locking mechanism (8) is arranged at the connection between the slider (4) and the handlebar (3); alternatively, the first locking mechanism (8) is provided at the tip hand grip of the handle bar (3).

10. A stroller frame according to claim 1, characterized in that the handlebar (3) comprises an upper section (31) and a lower section (32), the upper section (31) and the lower section (32) being rotatably connected to enable the upper section (31) to be flipped and folded forward with respect to the lower section (32).

11. The stroller frame according to claim 10, further comprising a second locking mechanism (9), wherein the upper section (31) is fixedly connected with the lower section (32) with respect to each other when the second locking mechanism (9) is in a locked state; when the second locking mechanism (9) is in an unlocked state, the upper section (31) can be turned forward and folded relative to the lower section (32).

12. Child stroller frame according to claim 11, characterized in that the second locking mechanism (9) comprises a sliding sleeve, the upper section (31) and the lower section (32) are connected by means of the sliding sleeve, and the upper section (31) and the lower section (32) can be locked or unlocked relatively by means of the sliding sleeve.

13. Child stroller frame according to claim 1, characterized in that the unlocking means (10) are connected to the second locking mechanism (9) by a first flexible member and the upper section (31) is connected to the first locking mechanism (8) by a second flexible member, so that the second locking mechanism (9) is pulled by the first flexible member to unlock when the unlocking means (10) is operated, and the first locking mechanism (8) is pulled by the second flexible member to unlock after the upper section (31) is flipped and folded relative to the lower section (32).

14. Child stroller frame according to claim 1, characterized in that the unlocking means (10) are connected to the first locking mechanism (8) and the second locking mechanism (9) by means of flexible members, so that the first locking mechanism (8) and the second locking mechanism (9) are simultaneously unlocked by pulling the flexible members when the unlocking means (10) are operated.

15. Child stroller frame according to any of the claims 1-14, further comprising a seat bar set and a second link (15), the seat bar set being rotatably connected to the slider (4) by means of the second link (15) for bringing about folding of the seat bar set by means of the second link (15) when the slider (4) slides with respect to the handlebar (3).

16. Child car frame according to claim 15, characterized in that the seat bar set comprises a leg rest bar (12), a seat bar (13) and a back rest bar (14), one end of the seat bar (13) is rotatably connected to the leg rest bar (12), the other end of the seat bar (13) is rotatably connected to the back rest bar (14), the second link (15) is rotatably connected to the seat bar (13) to bring the seat bar (13) and the leg rest bar (12) close to the back rest bar (14) by the second link (15) when the slider (4) slides relative to the handle bar (3), thereby achieving folding of the seat bar set.

17. A stroller comprising a stroller frame according to any one of claims 1 to 16.