CN212289998U

CN212289998U - Baby carriage frame assembly and baby carriage

Info

Publication number: CN212289998U
Application number: CN202021585550.1U
Authority: CN
Inventors: 刘修平
Original assignee: Unitron Enterprises Zhuhai Co ltd
Current assignee: Unitron Enterprises Zhuhai Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-01-05
Anticipated expiration: 2030-08-03

Abstract

The present disclosure relates to a stroller frame assembly and a stroller, wherein the frame assembly comprises: the front foot set comprises a front foot rod and a front foot joint, and the first end of the front foot joint is fixed at the first end of the front foot rod; the seat frame group includes: the seat part is provided with a locking and unlocking component and used for allowing the frame assembly to be folded after unlocking, and the seat part is hinged with the second end of the front foot joint to form a third hinge shaft; the rear leg group includes: the first end of the rear foot rod is hinged with the first end of the foot joint to form a first hinge shaft; a rear wheel assembly rotatably connected to the second end of the rear foot bar; a first end of the linkage rod is hinged with the lateral part of the seat part along the left-right direction to form a second hinged shaft, and the second hinged shaft is positioned on one side of the locking and unlocking component far away from the first hinged shaft; the linkage rod is used for moving upwards to unlock the rear wheel assembly when the frame assembly is folded; and the rear wheel driving mechanism is arranged on the rear foot rod and used for moving after the rear wheel assembly is unlocked so as to drive the rear wheel assembly to swing and retract.

Description

Baby carriage frame assembly and baby carriage

Technical Field

The present disclosure relates to the field of child products, and more particularly, to a stroller frame assembly and a stroller.

Background

The folding of frame is sometimes required to carry out for the convenience of carrying or depositing of present perambulator, and in order to realize these two functions, present frame folding mechanism is comparatively complicated, also needs complicated operating procedure when folding, and the operation degree of difficulty is great, and convenient operation nature is relatively poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a baby carriage frame assembly and a baby carriage, which can more conveniently realize the folding of a rear wheel assembly.

An aspect of an embodiment of the present disclosure provides a stroller frame assembly, including: the front foot set comprises a front foot rod and a front foot joint, and the first end of the front foot joint is fixed at the first end of the front foot rod; the seat frame group includes: a seat part, wherein the seat part is provided with a locking and unlocking part and is configured to allow the frame assembly to be folded after being unlocked, and the seat part is hinged with the second end of the front foot joint and forms a third hinge shaft; the rear leg group includes:

the first end of the rear foot rod is hinged with the first end of the foot joint and forms a first hinged shaft;

a rear wheel assembly rotatably connected to the second end of the rear foot bar;

the first end of the linkage rod is hinged with the lateral part of the seat part along the left-right direction to form a second hinged shaft, and the second hinged shaft is positioned on one side of the locking and unlocking component far away from the first hinged shaft in the front-back direction; the linkage rod is configured to move upwards to unlock the rear wheel assembly when the frame assembly is folded; and

and the rear wheel driving mechanism is arranged on the rear foot rod and is configured to move after the rear wheel assembly is unlocked so as to drive the rear wheel assembly to swing and retract.

In some embodiments, the rear wheel assembly includes a rear wheel configured to retract inwardly with the frame assembly in the fully folded condition to an axis in an upright condition.

In some embodiments, the linkage rod is located inboard of the rear foot bar in the side-to-side direction and is configured to move downwardly during deployment of the frame assembly to jack the rear wheel assembly outwardly and to lock the rear wheel assembly when moved downwardly into contact with at least a portion of the inboard side of the rear wheel assembly.

In some embodiments, the second end of the linkage rod is provided with a rounded corner on a side close to the rear foot rod.

In some embodiments, the set of hind legs further comprises: the first end of the rear foot rod joint is connected with the second end of the rear foot rod, the second end of the rear foot rod joint is hinged with the rear wheel assembly, and the rear wheel assembly is configured to be retracted to be in contact with the second end of the rear foot rod joint and the second end of the linkage rod for limiting.

In some embodiments, the rear foot bar is provided with a guide seat, and the rear wheel driving mechanism is configured to move under the guiding action of the guide seat.

In some embodiments, the guide seat is provided with a guide hole, and the linkage rod passes through the guide hole and is movably arranged relative to the guide hole.

In some embodiments, the guide seat is provided with a guide groove extending along the length direction of the rear foot bar, the side wall of the guide groove is provided with an opening extending along the length direction of the guide groove, and the rear wheel driving mechanism comprises:

the guide piece is movably arranged in the guide groove;

an elastic member provided between the guide and an end wall of a bottom of the guide groove, and configured to drive the guide to move upward after the rear wheel assembly is unlocked; and

and the first end of the connecting rod is fixed with the guide piece at the opening, and the second end of the connecting rod is hinged with the rear wheel assembly and is configured to drive the rear wheel assembly to swing and retract when moving upwards along with the guide piece.

In some embodiments, the guide way is seted up from the top of guide holder, and the lateral wall of guide way is the arc surface and circumference length exceeds half circumference, and the guide part includes:

a first cylindrical portion fixed to the first end of the connecting rod through the opening; and

the second cylindrical part is coaxially connected with the first cylindrical part, and the diameter of the second cylindrical part is smaller than that of the first cylindrical part;

the elastic element is sleeved on the second cylindrical portion and abuts against the end face, connected with the first cylindrical portion and the second cylindrical portion, of the first cylindrical portion.

In some embodiments, the hindfoot set further comprises a hindfoot bar joint, a first end of the hindfoot bar joint being connected to a second end of the hindfoot bar; the rear wheel assembly includes:

a rear wheel; and

the connecting piece is fixed on the rear wheel, the connecting piece is articulated with the second end of the rear foot rod joint to form a fifth articulated shaft, the connecting piece is articulated with the second end of the connecting rod to form a sixth articulated shaft, and the fifth articulated shaft and the sixth articulated shaft are arranged at intervals and extend along the front-back direction.

In some embodiments, the rear leg assembly further includes a cross bar, the left and right sides of the frame assembly are respectively provided with a rear leg, each rear leg is provided with a guide seat, and two ends of the cross bar are respectively connected with the guide seats on the two sides.

In some embodiments, the guide shoe comprises:

the first end of the connecting rod is connected with the cross rod;

the first guide part is connected to the second end of the connecting rod, is positioned on the inner side of the rear foot rod along the left-right direction, is provided with a guide hole for the linkage rod to pass through, and is configured to guide the movement of the linkage rod; and

the second guide part is connected and is kept away from the one end of connecting rod and extends up along the length direction of back foot bar at first guide part, and the second guide part is equipped with the guide way along the length direction of back foot bar from the top, is configured to provide the direction to rear wheel drive mechanism's motion.

Another aspect of embodiments of the present disclosure provides a stroller including the stroller frame assembly of the above-described embodiments.

According to the baby carriage frame assembly disclosed by the embodiment of the disclosure, the rear wheel assembly is locked by the linkage rod, so that the rear wheel assembly can be stably positioned at a fixed position after the frame assembly is unfolded, and the straightness of the baby carriage in use is ensured, so that the operability of a user during pushing and the comfort level of taking a baby are improved; moreover, the rear wheel assembly can bear the external force impact of the side surface in the using process, and the rear wheel assembly is prevented from being damaged, so that the using stability of the whole baby carriage is improved; in addition, in the folding process of the frame assembly, the linkage rod can unlock the rear wheel assembly and drive the rear wheel assembly to swing and retract through the movement of the rear wheel driving mechanism, so that the space occupied by the rear wheel assembly after the frame assembly is folded is reduced, the portability is improved, and the rear wheel assembly is easy to store.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

FIG. 1 is a schematic structural view of some embodiments of a stroller frame assembly of the present disclosure;

FIG. 2 is an exploded view of some embodiments of a stroller frame assembly of the present disclosure;

FIG. 3 is a schematic view of the rear leg assembly and handlebar assembly of the stroller frame assembly of the present disclosure;

FIG. 4 is an enlarged view of a portion of the bottom of the rear leg bar assembly of FIG. 3;

FIG. 5 is an exploded view of the hindfoot assembly of FIG. 3;

FIG. 6 is a first perspective view of the guide housing of the rear leg assembly;

FIG. 7 is a second perspective view of the guide housing of the rear leg assembly;

FIG. 8 is a rear elevational view of the rear wheel assembly locked with the frame assembly deployed;

FIG. 9 is a perspective view of the rear wheel assembly locked with the frame assembly deployed;

FIG. 10 is an enlarged view taken at P in FIG. 9;

FIG. 11 is a perspective view of the rear wheel assembly unlocked and the frame assembly stowed;

fig. 12 is an enlarged view at Q in fig. 11.

Description of the reference numerals

A100, a forefoot group; a200, a seat frame group; a300, a handle group; a400, a rear foot group;

A. a first hinge shaft; B. a second hinge shaft; C. a third hinge shaft; D. a fourth hinge shaft; m, a fifth articulated shaft; n, a sixth articulated shaft; s, a rear foot bar joint surface;

101. a front wheel assembly; 102. a front foot bar; 103. a foot lever; 104. a forefoot joint;

200. a locking and unlocking member; 220. a seat portion;

301. a handle joint;

401. a rear foot bar; 402. a guide seat; 21. a connecting rod; 22. a first guide portion; 23. a second guide portion; 22A, a guide hole; 23A, a guide groove; 23B, opening; 403. a cross bar; 404. a hind foot bar joint; 405. a side armrest joint; 410. a rear wheel assembly; 411. a rear wheel; 412. a connecting member; 420. a rear wheel drive mechanism; 421. a connecting rod; 422. a guide member; 422A, a first cylindrical part; 422B, a second cylindrical part; 423. an elastic element; 424. a screw; 430. a linkage rod; 431. a plug head; 432. and (4) rounding.

Detailed Description

The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

The terms "first", "second", and the like in the present disclosure are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.

In the description of the present disclosure, it is to be understood that the terms "front", "rear", "top", "bottom", "left" and "right", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, for example, defined in the direction of a baby seated in a stroller, and are only for convenience in describing the present disclosure, and do not indicate or imply that the devices referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present disclosure.

The present disclosure provides a stroller including a stroller frame assembly (hereinafter "frame assembly") configured to support a seat assembly, the frame assembly enabling walking of the stroller when subjected to an external force, and a seat assembly integrally mountable to the frame assembly for seating a baby or child, e.g., detachably mountable.

As shown in fig. 1, the present disclosure provides a stroller frame assembly, in some embodiments, comprising: front leg set a100, seat frame set a200, handlebar set a300, and rear leg set a 400.

As shown in fig. 2, the front foot assembly a100 includes a front foot bar 102, two foot bars 103 and two front foot joints 104, wherein the front foot bar 102 and the foot bars 103 can both be U-shaped, the two front foot joints 104 can be respectively fixed at the first ends of the left and right sides of the U-shaped front foot bar 102 and extend backward, and the front wheel assemblies 101 are respectively arranged at the bottom of the front foot bar 102 along the left and right ends of the frame assembly.

The seat set a200 includes a seat portion 220, a linkage rod 430, and a locking and unlocking member 200. The seat portion 220 is hinged to the second end of the forefoot joint 104 and forms a third hinge axis C; the locking and unlocking part 200 realizes unlocking by taking the third hinge shaft C as a rotation center and is configured to realize locking and unlocking of the frame assembly; a first end of the linkage rod 430 is hinged to a lateral portion of the seat part 220 in the left-right direction to form a second hinge axis B.

The handle group a300 is hinged to the seat portion 220 at a lateral side in the left-right direction, and forms a fifth hinge axis D.

The heel set a400 includes a heel bar 401 and a side armrest joint 405, wherein a first end of the side armrest joint 405 is fixed to a first end of the heel bar 401 and extends rearward, and a first end of the side armrest joint 405 is hinged to a first end of the front foot joint 104, so that the first end of the heel bar 401 is hinged to the first end of the front foot joint 104 to form a first hinge axis a. The second end of the rear foot bar 401 is attached to the rear wheel assembly 410. The second end of the side armrest joint 405 is hinged to the handle joint 301 of the handle set a300 to form a fourth hinge axis D.

Wherein, on the fore-and-aft direction of frame subassembly, first articulated shaft A, third articulated shaft C, second articulated shaft B and fourth articulated shaft D interval in proper order set up after to in the past, and each articulated shaft all extends along controlling the direction.

After the seat frame group A200 is unlocked through the locking and unlocking component 200, the front foot joint 104 is pushed to rotate around the first hinge shaft A through the third hinge shaft C to fold the front foot group A100; meanwhile, the seat frame group A200 drives the linkage rod 430 to rotate around the second hinge shaft B and move upwards, and the folding of the rear wheel component 410 is realized after the rear wheel component 410 is unlocked; meanwhile, the seat frame set a200 drives the handle set a300 to fold.

In some embodiments, the frame assembly comprises: a front foot set A100, a seat frame set A200 and a rear foot set A400, wherein the front foot set A100 comprises a front foot rod 102 and a front foot joint 104, and a first end of the front foot joint 104 is fixed at a first end of the front foot rod 102; set a200 of mounts comprises: a seat portion 220, the seat portion 220 having a locking/unlocking member 200 disposed thereon and configured to allow the frame assembly to be folded after being unlocked, the seat portion 220 being hinged to the second end of the front foot joint 104 and forming a third hinge axis C; hind foot group a400 includes: a rear foot bar 401, a rear wheel assembly 410, a linkage bar 430 and a rear wheel drive mechanism 420.

Wherein, the first end of the rear foot bar 401 and the seat part 220 are hinged with the first end of the front foot joint 104 along the left-right direction, and form a first hinge axis A, and the left and right sides of the frame component are respectively provided with a rear foot bar 401. The rear wheel assembly 410 is rotatably connected to the second end of the rear foot bar 401. A first end of the linkage rod 430 is hinged to a lateral portion of the seat portion 220 in the left-right direction to form a second hinge axis B, which is located on a side of the locking and unlocking member 200 away from the first hinge axis a in the front-rear direction. The linkage rod 430 is configured to bear against the rear wheel assembly 410 by a second end of the linkage rod 430 when the frame assembly is in the deployed state, so as to provide a locking force for the rear wheel assembly 410; and moves upward to unlock the rear wheel assembly 410 when the carriage assembly is folded. The rear wheel drive mechanism 420 is configured to move after the rear wheel assembly 410 is unlocked to swing the rear wheel assembly 410 back and forth.

Since the second hinge axis B is located at a side of the locking and unlocking member 200 far from the first hinge axis a, in the process of pulling up the vehicle after the locking and unlocking member 200 is unlocked by an external force, the rear end of the seat portion 220 rotates upward with the first hinge axis a as a rotation axis, and thus the linkage rod 430 moves upward to unlock the rear wheel assembly 410.

In this embodiment, the linkage rod 430 is provided to lock the rear wheel assembly 410, so that it can be ensured that the rear wheel assembly 410 can be stably positioned at a fixed position after the frame assembly is unfolded, thereby ensuring the linearity of the stroller in use, improving the operability of the stroller and the comfort of the stroller, and improving the safety of the stroller in traveling. Moreover, the rear wheel assembly 410 can bear the impact of external force from the side surface in the using process, and the rear wheel assembly 410 is prevented from being damaged, so that the using stability of the whole baby carriage is improved. In addition, in the process of folding the frame assembly, the linkage rod 430 can unlock the rear wheel assembly 410, and the rear wheel assembly 410 is driven to swing and retract by the movement of the rear wheel driving mechanism 420, so that the space occupied by the folded rear wheel assembly 410 after the frame is folded is reduced, the portability is improved, and the storage is easy.

In some embodiments, as shown in fig. 11, the rear wheel assembly 410 includes a rear wheel 411, the rear wheel 411 being configured to retract inwardly with the frame assembly in a fully folded condition to an axis in an upright condition. Here, "inwardly retracted" means inwardly retracted in the left-right direction, and "vertical state" is not a vertical position in a strict sense and may be in a preset angle range including the vertical state.

In this embodiment, the rear wheel assembly 410 can be retracted to the inner side of each rod of the frame assembly after the frame assembly is folded in the left-right direction and the up-down direction, so that the extra occupied space of the rear wheel assembly 410 after the frame assembly is folded can be reduced to a greater extent, the volume of the frame assembly is reduced, the portability is improved, and the frame assembly is easy to store.

In some embodiments, as shown in fig. 8 and 9, linkage 430 is located inboard of rear foot bar 401 in the left-right direction and is configured to move the rear wheel assembly 410 outwardly by downward movement of linkage 430 during frame assembly deployment, e.g., to move the rear wheel assembly 410 outwardly by the second (bottom) end of linkage 430 and to lock the rear wheel assembly 410 when moved downward into contact with at least a portion of the inboard side of the rear wheel assembly 410.

As can be seen from fig. 8, the rear wheel assembly 410 includes a rear wheel 411 and a connecting member 412, and the connecting member 412 is provided on the rear wheel 411 so that the rear wheel 411 is connected to the rear foothold 401 through the connecting member 412. The linkage rod 430 pushes the rear wheel assembly 410 outward through a second end (bottom end) of the linkage rod 430 in the downward movement process, and the linkage rod 430 cannot move downward continuously after moving downward to the outer side surface along the left-right direction to be contacted with the connecting piece 412, so that the rear wheel assembly 410 is locked.

The embodiment can gradually push the rear wheel assembly 410 to return to the initial position from the retracted position through the linkage rod 430 in the unfolding process of the frame assembly, so that the rear wheel assembly 410 is smoothly and smoothly opened, and after the frame assembly is completely unfolded, the rear wheel assembly 410 is reliably locked at the initial position due to the contact limit of the linkage rod 430 and the rear wheel assembly 410, so that the straightness of the baby carriage during running can be improved, the operability of a user during the baby carriage and the comfort of the baby carriage can be improved, and the safety of the baby carriage during running can also be improved. Moreover, the rear wheel assembly 410 can bear the impact of external force from the side surface in the using process, and the rear wheel assembly 410 is prevented from being damaged, so that the using stability of the whole baby carriage is improved.

As shown in fig. 8, a second end of the linkage rod 430 is provided with a rounded corner 432 on a side close to the rear foot bar 401. For example, the linkage rod 430 is a tubular structure, a plug 431 is arranged at the second end of the linkage rod 430, and a rounded corner 432 is arranged at one side of the bottom end of the plug 431, which is close to the rear foot rod 401. By providing the rounded corners 432, when the rear wheel 411 is about to be unfolded outward to the initial position, the second end of the linkage rod 430 can be smoothly moved along the inner side wall of the rear wheel assembly 410, and the rear wheel assembly 410 is prevented from being scratched.

In some embodiments, as shown in fig. 5, the frame assembly further comprises: a rear foot bar joint 404, wherein a first end of the rear foot bar joint 404 is connected with a second end of the rear foot bar 401, a second end of the rear foot bar joint 404 is hinged with a rear wheel component 410, and the rear wheel component 410 is configured to be retracted to be in contact with the rear foot bar joint 404 and the second end of the linkage rod 430 for limiting. This embodiment can limit the position in which the rear wheel assembly 410 is retracted.

For example, as shown in FIG. 5, the hindfoot bar 401 is tubular in configuration, with a first end of the hindfoot bar joint 404 inserted into a second end of the hindfoot bar 401, and a second end of the hindfoot bar joint 404 exposed from the hindfoot bar 401 and hingedly attached to the connecting member 412 of the rear wheel assembly 410. When the frame assembly is fully folded, the connecting member 412 of the rear wheel assembly 410 contacts the second end of the linkage rod 430 for limiting. Furthermore, the rear foot bar joint 404 comprises a main body part and a hinge joint connected to the bottom end of the main body part, the hinge joint comprises two disks arranged at an interval, the top end of the connecting piece 412 is located between the two disks and is hinged to the hinge joint, and when the rear wheel 411 is retracted to a state that the axis is vertical, the side surface of the connecting piece 412 is simultaneously contacted with the bottom surface of the main body part, namely the rear foot bar joint surface S.

In some embodiments, as shown in fig. 3, 4 and 10, a guide seat 402 is disposed on the rear foot bar 401, and the rear wheel driving mechanism 420 is configured to be mounted on the rear foot bar 401 through the guide seat 402 and move under the guiding action of the guide seat 402. This embodiment can provide convenience for the installation of the rear wheel drive mechanism 420 and provide guidance for the movement thereof, so that the folding process of the rear wheel assembly 410 during the folding process of the frame assembly is more stable.

In some embodiments, as shown in fig. 6 and 9, the guide holder 402 is provided with a guide hole 22A, and the linkage rod 430 passes through the guide hole 22A and is movably disposed with respect to the axial direction of the guide hole 22A. For example, the linkage rod 430 has a tubular structure with an oblong cross section, and accordingly, the guide hole 22A is also designed as an oblong hole.

The embodiment can provide guidance for the up-and-down movement of the linkage rod 430, so that the movement of the linkage rod 430 is more stable, and the linkage rod 430 is prevented from shifting in the folding or unfolding process of the frame, so that the locking and unlocking of the rear wheel assembly 410 can be accurately and reliably realized.

In some embodiments, as shown in fig. 7 and 10, the guide base 402 is provided with a guide groove 23A extending along the length direction of the rear foot bar 401, a side wall of the guide groove 23A has an opening 23B extending along the length direction thereof, and the rear wheel driving mechanism 420 includes: a guide 422, an elastic member 423, and a link 421. Wherein the guide 422 is movably provided in the guide groove 23A; an elastic member 423, such as a spring, provided between the guide 422 and the end wall of the bottom of the guide groove 23A, configured to drive the guide 422 to move upward after the rear wheel assembly 410 is unlocked; a first end of the link 421 is fixed to the guide 422 at the opening 23B, and a second end of the link 421 is hinged to the rear wheel assembly 410 and configured to swing the rear wheel assembly 410 to retract when moving upward with the guide 422.

As shown in fig. 10, when the frame assembly is in the fully unfolded state, the rear wheel assembly 410 is in the fully opened state, the linkage rod 430 locks the rear wheel assembly 410, and the rear wheel assembly 410 drives the link 421 to move downwards, so that the guide 422 is driven to move downwards to compress the elastic element 423. As shown in fig. 12, when the frame assembly is folded, the linkage rod 430 is driven to move upwards to unlock the rear wheel assembly 410, and the guide 422 moves upwards in the guide groove 23A under the elastic action of the elastic element 423, so that the connecting rod 421 is driven to move upwards to drive the rear wheel assembly 410 to retract through the connecting rod 421.

This embodiment provides a driving force for the retraction of the rear wheel assembly 410 by the elastic action of the elastic member 423, and does not need to additionally provide a driving part, thereby enabling the structure of the frame assembly and having reliable operation.

As shown in fig. 10, the guide groove 23A is opened from the top of the guide holder 402, and the side wall of the guide groove 23A is a circular arc surface and the circumferential length exceeds a half circumference, so that the guide 422 is prevented from coming out of the opening 23B. The guide 422 includes: a first cylindrical portion 422A fixed to a first end of the link 421 through the opening 23B; and a second cylindrical portion coaxially connected to the first cylindrical portion 422A and having a diameter smaller than the first cylindrical portion 422A. The elastic element 423 is sleeved on the second cylindrical portion, a first end of the elastic element 423 abuts against an end surface of the first cylindrical portion 422A connected to the second cylindrical portion, and a second end of the elastic element 423 abuts against a bottom surface of the guide groove 23A.

This embodiment facilitates both the fixing of the link 421 to the guide 422 and the mounting of the elastic member 423, and simplifies the structure.

In some embodiments, as shown in fig. 5, the frame assembly further comprises a rear foot bar joint 404, a first end of the rear foot bar joint 404 being connected to a second end of the rear foot bar 401. The rear wheel assembly 410 includes: the connecting member 412 is fixed on the rear wheel 411, the connecting member 412 is hinged to the second end of the rear foot bar joint 404 to form a fifth hinge shaft M, the connecting member 412 is hinged to the second end of the connecting rod 421 to form a sixth hinge shaft N, and the fifth hinge shaft M and the sixth hinge shaft N are arranged at intervals and located in the inner area of the top of the rear wheel 411 and extend in the front-back direction.

The guide 422 and the elastic member 423 are installed in the guide groove 23A of the guide holder 402, and one screw 424 is fixed to the guide 422 through the opening 23B after passing through the top end of the connecting rod 421. At the sixth hinge axis N, another screw 424 is fixed to the link 412 after passing through the bottom end of the link 421.

This embodiment can drive rear wheel subassembly 410 through the fifth articulated shaft M and the sixth articulated shaft N of dislocation set when connecting rod 421 upward movement, uses fifth articulated shaft M to withdraw as the pivot, and simple structure is reliable.

In some embodiments, as shown in fig. 3, the frame assembly further includes a cross bar 403, a rear foot bar 401 is disposed on each of the left and right sides of the frame assembly, a guide seat 402 is disposed on each rear foot bar 401, and two ends of the cross bar 403 are connected to the guide seats 402 on the two sides. The rear foot rods 401 on both sides are connected through the cross rod 403 to form a rear foot group A400 with a stable structure, and the guide seat 402 is easy to position.

In some embodiments, as shown in fig. 4, the guide holder 402 includes: a connecting rod 21, a first guide portion 22 and a second guide portion 23. Wherein, the first end of the connecting rod 21 is connected with the cross rod 403, for example, the cross rod 403 is a sleeve, and the cross rod 403 is sleeved outside the connecting rod 21; the first guide part 22 is connected to the second end of the connecting rod 21, the first guide part 22 is located on the inner side of the rear foot rod 401 along the left-right direction, a guide hole 22A for the linkage rod 430 to pass through is formed in the first guide part 22, and the guide hole 22A is configured to guide the movement of the linkage rod 430; the second guide portion 23 is connected to one end of the first guide portion 22 away from the connecting rod 21 and extends upward along the length direction of the rear foot rod 401, and the second guide portion 23 is provided with a guide groove 23A along the length direction of the rear foot rod 401 from the top and is configured to guide the movement of the rear wheel drive mechanism 420.

The guide seat 402 of this embodiment can provide guidance for the movement of the linkage rod 430 and the movement of the rear wheel driving mechanism 420 at the same time, and is connected with the cross rod 403, so that various structures are integrated, and the structure is more compact.

Secondly, the present disclosure provides a stroller including the stroller frame assembly of the above-described embodiment. The baby carriage has at least one of the following advantages:

1. it is possible to ensure that the rear wheel assembly 410 is stably positioned at a fixed position after the frame assembly is unfolded, thereby ensuring straightness during the traveling of the stroller, improving operability during the pushing of the user and comfort of the infant, and also improving safety during the traveling of the stroller.

2. The rear wheel assembly 410 can be guaranteed to bear lateral external force impact in the using process, the rear wheel assembly 410 is prevented from being damaged, and therefore the using stability of the whole baby carriage is improved.

3. In the process of folding the frame component, the rear wheel component 410 can be driven to swing and retract, and the space occupied by the folded rear wheel component 410 after the frame is folded is reduced, so that the portability is improved, and the storage is easy.

4. The parts are convenient to disassemble and are beneficial to maintenance, the manufacturing difficulty of the baby carriage can be reduced, and the baby carriage is easy to maintain in the using process.

A stroller frame assembly and a stroller provided by the present disclosure are described in detail above. The principles and embodiments of the present disclosure are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present disclosure. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.

Claims

1. A stroller frame assembly, comprising: the front leg assembly comprises a front leg assembly (A100), a seat frame assembly (A200) and a rear leg assembly (A400), wherein the front leg assembly (A100) comprises a front leg rod (102) and a front leg joint (104), and a first end of the front leg joint (104) is fixed at a first end of the front leg rod (102); the set of carriages (A200) comprises: a seat part (220), wherein a locking and unlocking component (200) is arranged on the seat part (220), the locking and unlocking component is configured to allow the frame assembly to be folded after being unlocked, and the seat part (220) is hinged with the second end of the front foot joint (104) and forms a third hinge shaft (C); the rear foot group (A400) comprises:

a rear foot bar (401), a first end of the rear foot bar (401) is hinged with a first end of the front foot joint (104) and forms a first hinge shaft (A);

a rear wheel assembly (410) rotatably connected to a second end of the rear foot bar (401);

a linkage rod (430), wherein a first end of the linkage rod (430) is hinged with a lateral part of the seat part (220) along the left-right direction to form a second hinged shaft (B), and the second hinged shaft (B) is positioned on one side of the locking and unlocking component (200) far away from the first hinged shaft (A) in the front-back direction; the linkage bar (430) is configured to move upward to unlock the rear wheel assembly (410) when the frame assembly is folded; and

the rear wheel driving mechanism (420) is arranged on the rear foot rod (401) and is configured to move after the rear wheel assembly (410) is unlocked so as to drive the rear wheel assembly (410) to swing and retract.

2. A stroller frame assembly according to claim 1, wherein the rear wheel assembly (410) comprises a rear wheel (411), the rear wheel (411) being configured to retract inwardly with the frame assembly in a fully folded condition to an axis in an upright condition.

3. The stroller frame assembly of claim 2, wherein said linkage bar (430) is located inboard of said rear foot bar (401) in a side-to-side direction and is configured to move downward during deployment of said frame assembly to jack said rear wheel assembly (410) outward and to lock said rear wheel assembly (410) when moved downward into contact with at least a portion of an inboard side of said rear wheel assembly (410).

4. A stroller frame assembly according to claim 3, wherein the second end of the linkage bar (430) is provided with a rounded corner (432) on a side adjacent the rear foot bar (401).

5. The stroller frame assembly of claim 1, wherein said rear leg group (a400) further comprises: a rear foot bar joint (404), a first end of the rear foot bar joint (404) is connected with a second end of the rear foot bar (401), a second end of the rear foot bar joint (404) is hinged with the rear wheel assembly (410), and the rear wheel assembly (410) is configured to be retracted to be in contact with the rear foot bar joint (404) and a second end of the linkage rod (430) for limiting.

6. A stroller frame assembly according to claim 1, wherein the rear foot bar (401) is provided with a guide seat (402), and the rear wheel drive mechanism (420) is configured to move under the guiding action of the guide seat (402).

7. A stroller frame assembly according to claim 6, wherein the guide seat (402) is provided with a guide hole (22A), and the linkage rod (430) passes through the guide hole (22A) and is movably disposed relative to the guide hole (22A).

8. The stroller frame assembly according to claim 6, wherein the guide seat (402) is provided with a guide groove (23A) extending along a length direction of the rear foot bar (401), a side wall of the guide groove (23A) has an opening (23B) extending along a length direction thereof, and the rear wheel drive mechanism (420) comprises:

a guide member (422) movably provided in the guide groove (23A);

an elastic member (423) provided between the guide (422) and an end wall of a bottom of the guide groove (23A), and configured to drive the guide (422) to move upward after the rear wheel assembly (410) is unlocked; and

a connecting rod (421), a first end of the connecting rod (421) is fixed with the guiding piece (422) at the opening (23B), and a second end of the connecting rod (421) is hinged with the rear wheel assembly (410) and is configured to drive the rear wheel assembly (410) to swing and retract when moving upwards along with the guiding piece (422).

9. The stroller frame assembly according to claim 8, wherein the guide groove (23A) is opened from the top of the guide seat (402), the side wall of the guide groove (23A) is a circular arc surface and the circumferential length exceeds a half circumference, and the guide (422) comprises:

a first cylindrical portion (422A) fixed to a first end of the link (421) through the opening (23B); and

a second cylindrical portion coaxially connected to the first cylindrical portion (422A) and having a smaller diameter than the first cylindrical portion (422A);

the elastic element (423) is sleeved on the second cylindrical portion and abuts against an end face of the first cylindrical portion (422A) connected with the second cylindrical portion.

10. The stroller frame assembly of claim 8, wherein said rear foot set (a400) further comprises a rear foot bar joint (404), a first end of said rear foot bar joint (404) being connected to a second end of said rear foot bar (401); the rear wheel assembly (410) includes:

a rear wheel (411); and

connecting piece (412) is fixed on rear wheel (411), connecting piece (412) with the second end of back foot bar joint (404) is articulated to form fifth articulated shaft (M), connecting piece (412) with the second end of connecting rod (421) is articulated to form sixth articulated shaft (N), fifth articulated shaft (M) with sixth articulated shaft (N) interval sets up, and all extends along the fore-and-aft direction.

11. The stroller frame assembly according to claim 6, wherein the rear leg assembly (A400) further comprises a cross bar (403), one rear leg bar (401) is disposed on each of the left and right sides of the stroller frame assembly, one guide seat (402) is disposed on each rear leg bar (401), and both ends of the cross bar (403) are connected to the guide seats (402) on both sides.

12. The stroller frame assembly of claim 11, wherein the guide seat (402) comprises:

a connecting rod (21), a first end of the connecting rod (21) being connected with the cross bar (403);

the first guide part (22) is connected to the second end of the connecting rod (21), the first guide part (22) is located on the inner side of the rear foot rod (401) in the left-right direction, a guide hole (22A) for the linkage rod (430) to pass through is formed in the first guide part (22), and the guide hole (22A) is configured to guide the movement of the linkage rod (430); and

the second guide part (23) is connected to the one end that first guide part (22) kept away from connecting rod (21) and along the length direction of back foot pole (401) extends upwards, second guide part (23) follow from the top the length direction of back foot pole (401) is equipped with guide way (23A), is configured to provide the direction to the motion of rear wheel drive mechanism (420).

13. A stroller comprising the stroller frame assembly of any one of claims 1 to 12.