Baby carriage
Technical Field
The invention relates to a baby stroller.
Background
Prior art child strollers typically include a stroller frame having an extended position and a collapsed position, a seat mechanism disposed on the stroller frame, a full-stroller locking mechanism for locking the stroller frame in the extended position, a front wheel assembly, a rear wheel assembly, and the like. The cart frames are various in variety, the number of the rods of the cart frames is different, and the connection relation and the connection position among the rods are different, so that the folding principle, the folding mode, the production process and the production cost are different.
Disclosure of Invention
The invention aims to provide a unidirectional folding baby stroller.
In order to solve the technical problems, the technical scheme adopted by the invention is that the baby stroller comprises a stroller frame with an unfolding position and a folding position, a seat device, a front wheel assembly, a rear wheel assembly and a frame locking mechanism for locking the stroller frame in the unfolding position, wherein the stroller frame comprises side brackets positioned at two side parts and a plurality of cross bars fixedly connected between the side brackets at two sides, and each side bracket comprises:
The rear wheel assembly is arranged at the lower part of the rear bracket;
An upper link mechanism formed at an upper portion of the rear bracket, comprising:
A push rod;
the lower end part of the push rod is pivotally connected with the rear end part of the push rod connecting rod around a shaft;
The side handrail is positioned above the push rod connecting rod, the rear end part of the side handrail is connected with the push rod around a two-axis pivot, the front end part of the side handrail is connected with the upper end part of the rear support around a three-axis pivot, the push rod connecting rod is connected with the rear support around a four-axis pivot, and the four axes are positioned below the three axes;
each side of the side bracket further comprises:
The rear frame sliding piece is arranged in a sliding manner along the upper and lower length directions of the rear bracket;
the front frame sliding piece is pivotally connected to the push rod connecting rod around five shafts, and the five shafts are positioned below the four shafts;
a front bracket, the front bracket slide being slidably engaged along a front-to-rear direction of the front bracket, the front wheel assembly being disposed at a front portion of the front bracket;
The upper end part of the push rod auxiliary rod is in pivot connection with the upper connecting rod mechanism, the lower part of the push rod auxiliary rod, the rear part of the front support and two parts of the rear support slide are in pivot connection, and the third part is in pivot connection with at least one of the two parts.
The invention aims to provide a transversely folded baby stroller.
In order to solve the technical problems, the technical scheme adopted by the invention is that the baby stroller comprises a stroller frame with an unfolding position and a folding position, a seat device, a front wheel assembly, a rear wheel assembly and a frame locking mechanism for locking the stroller frame in the unfolding position, wherein the stroller frame comprises side brackets positioned at two side parts and a transverse support frame which is connected between the side brackets at two sides and can be transversely folded, and each side bracket comprises:
The rear wheel assembly is arranged at the lower part of the rear bracket;
An upper link mechanism formed at an upper portion of the rear bracket, comprising:
A push rod;
the lower end part of the push rod is pivotally connected with the rear end part of the push rod connecting rod around a shaft;
The side handrail is positioned above the push rod connecting rod, the rear end part of the side handrail is connected with the push rod around a two-axis pivot, the front end part of the side handrail is connected with the upper end part of the rear support around a three-axis pivot, the push rod connecting rod is connected with the rear support around a four-axis pivot, and the four axes are positioned below the three axes;
each side of the side bracket further comprises:
The rear frame sliding piece is arranged in a sliding manner along the upper and lower length directions of the rear bracket;
the front frame sliding piece is connected to the push rod connecting rod around a five-axis pivot;
a front bracket, the front bracket slide being slidably engaged along a front-to-rear direction of the front bracket, the front wheel assembly being disposed at a front portion of the front bracket;
The upper end part of the push rod auxiliary rod is pivotally connected with the upper link mechanism, the lower part of the push rod auxiliary rod and the rear part of the front bracket are pivotally connected with two parts of the rear bracket slide, and the third part is pivotally connected with at least one of the two parts;
the cross frame includes:
The bottom bracket is arranged between the lower end parts of the push rod connecting rods at two sides and the lower part of the rear bracket.
In some embodiments, the upper link mechanism of each side further comprises a seat slide pivotally connected to the side rail about an eight axis, a seat frame slidably disposed on the seat slide in a fore-aft length direction, and the rear portion of the seat frame is pivotally connected to the push rod link and/or the push rod auxiliary link.
In some embodiments, the side rail is pivotally connected to a front rail by an eleven-axis pivot, an end of the front rail is pivotally connected to an end of a rail link by a twelve-axis pivot, and the other end of the rail link is connected to the seat slide about a thirteen-axis connection.
In some embodiments, the upper end of the push rod auxiliary rod is pivotally connected to the push rod link about six axes, the six axes being located between the one axis and the four axes.
In some embodiments, the lower portion of the push rod auxiliary lever, the rear portion of the front bracket and the rear bracket slide are connected by seven-axis coaxial pivots.
In some embodiments, the cross frame further comprises a front frame pivotally connected between the front and rear parts of the front frame at both sides, and a push rod frame pivotally connected between the upper parts of the push rods at both sides.
In some embodiments, the bottom bracket is formed by crossing two bottom rods and pivotally connecting the bottom rods at the crossing part, and four ends of the bottom bracket are respectively rotatably arranged with the lower ends of the push rod connecting rods at two sides and the lower part of the rear bracket through four universal joints.
In some embodiments, the push rod support is formed by pivotally connecting at least two push rod cross support sections, two outer ends of the push rod support are respectively and pivotally connected with upper ends of the push rods on two sides, the front support comprises two front main rods which are crossed and pivotally connected at the crossing, two front auxiliary rods which are respectively and pivotally connected with front ends of the front main rods, and the other ends of the two front auxiliary rods are respectively and pivotally connected with front parts of the front brackets on two sides, and the rear ends of the two front main rods are respectively and pivotally connected with rear parts of the front brackets on two sides.
In certain embodiments, the frame locking mechanism is disposed at a rotational connection of the push rod and the push rod link on each side.
The scope of the present application is not limited to the specific combination of the above technical features, but also covers other technical features formed by any combination of the above technical features or their equivalents. Such as those described above, and those disclosed in the present application (but not limited to) having similar functions, are replaced with each other.
Compared with the prior art, the four-bar mechanism has the advantages that the push rod, the side handrails, the push rod connecting rod and the rear support form the four-bar mechanism, the deformation of the four-bar mechanism is controlled by controlling the position of the push rod, and the push rod auxiliary rod drives the rear support sliding piece to slide along the rear support in the deformation process, so that the front support is controlled to retract or extend, and folding or unfolding is realized. The folding structure has the beneficial effects of small volume, small occupied space and strong rigid structure, and is convenient to operate by one hand in the folding process.
Drawings
FIG. 1 is a schematic diagram of a stroller dotted line (second embodiment, one-way fold);
FIG. 2 is a schematic perspective view of a stroller (first embodiment, folded laterally);
FIG. 3 is a schematic perspective view of a stroller II (first embodiment, folded laterally);
FIG. 4 is a schematic view of the underside of the stroller in an unfolded position (embodiment one, folded laterally);
FIG. 5 is a schematic side view of a stroller during half-folding (first embodiment, folded laterally);
FIG. 6 is a schematic underside view of the stroller in a collapsed position (embodiment one, folded laterally);
Wherein, 1, push rod, 2, push rod connecting rod, 3, side handrail, 4, rear bracket, 5, front bracket, 6, push rod auxiliary rod, 7, front bracket sliding piece, 8, rear bracket sliding piece, 9, seat sliding piece, 10, seat frame, 11, front handrail, 12, handrail connecting rod, 13, bottom bracket, 14, bottom rod, 15, universal joint, 16, front bracket, 17, push rod bracket, 18, front wheel assembly, 19, rear wheel assembly;
X1, a first axis, X2, a second axis, X3, a third axis, X4, a fourth axis, X5, a fifth axis, X6, a sixth axis, X7, a seventh axis, X8, an eighth axis, X11, an eleventh axis, X12, a twelve axis, X13, and a thirteenth axis.
Detailed Description
In a first embodiment, a laterally collapsible stroller, i.e., folded up and down, further shown in fig. 2-6, includes a stroller frame having an expanded position and a collapsed position, a seating arrangement, a front wheel assembly 18, a rear wheel assembly 19, and a frame locking mechanism for locking the stroller frame in the expanded position.
The cart frame comprises side brackets positioned at two side parts, and a transverse support connected between the side brackets and capable of being transversely folded, and the seat device is arranged between the side brackets.
As shown in fig. 2 to 6, each side bracket includes:
Each side bracket comprises:
A rear bracket 4, a rear wheel assembly 19 being provided at a lower portion of the rear bracket 4;
An upper link mechanism formed at an upper portion of the rear bracket 4, including:
A push rod 1;
the lower end part of the push rod 1 is pivotally connected with the rear end part of the push rod 2 around an axis X1;
The side handrail 3 is positioned above the push rod connecting rod 2, the rear end part of the side handrail 3 is in pivot connection with the push rod 1 around a two-axis X2, the front end part of the side handrail 3 is in pivot connection with the upper end part of the rear support 4 around a three-axis X3, the push rod connecting rod 2 is in pivot connection with the rear support 4 around a four-axis X4, the four-axis X4 is positioned below the three-axis X3, and the push rod 1, the push rod connecting rod 2, the side handrail 3 and the rear support 4 form a four-bar mechanism;
Each side bracket further comprises:
a rear frame slider 8, the rear frame slider 8 being slidably disposed along the up-down length direction of the rear frame 4;
A front frame slider 7, the front frame slider 7 being pivotally connected to the push rod link 2 about five axes X5;
a front bracket 5, a front bracket slider 7 slidably fitted along a front-rear direction of the front bracket 5, a front wheel assembly 18 provided at a front portion of the front bracket 5;
The push rod auxiliary rod 6, the upper end of the push rod auxiliary rod 6 is pivotally connected with the upper link mechanism, in this embodiment, the upper end of the push rod auxiliary rod 6 is pivotally connected with the push rod link 2 around six axes X6, and the six axes X6 are located between the one axis X1 and the four axes X4, but in addition, the upper end of the push rod auxiliary rod 6 is also applicable to the push rod 1, the side arm rest 3 and the seat frame 10 described below. The lower part of the push rod auxiliary rod 6 and the rear part of the front bracket 5 are coaxially and pivotally connected with three parts of the rear bracket slide 8;
The cross frame includes:
The bottom bracket 13, the bottom bracket 13 is arranged between the lower end parts of the push rod connecting rods 2 at two sides and the lower part of the rear bracket 4.
In this embodiment, the cross frame further includes a front frame 16 pivotally connected between the front and rear portions of the front frames 5 at both sides, and a push rod frame 17 pivotally connected between the upper portions of the push rods 1 at both sides, for ensuring rigidity of the lower front and upper portions at the deployed position.
The bottom bracket 13 is formed by crossing two bottom rods 14 and pivotally connecting the bottom rods at the crossing positions, and four end parts of the bottom bracket are respectively rotatably arranged with the lower end parts of the push rod connecting rods 2 at the two sides and the lower part of the rear bracket 4 through four universal joints 15.
The push rod support 17 is formed by pivoting the transverse support sections of three push rods 1, and two outer end parts of the push rod support 17 are respectively connected with the upper end parts of the push rods 1 at two sides in a pivot way. For convenient operation, the push rod support 17 is provided with an unlocking operation mechanism for controlling the unlocking of the frame locking mechanism, and a common mechanism on the trolley is omitted.
The front bracket 16 includes two cross-shaped front main rods pivotally connected at the cross-shaped parts, two front auxiliary rods pivotally connected to the front ends of the front main rods, respectively, and the other ends of the two front auxiliary rods are pivotally connected to the front parts of the front brackets 5 on both sides, respectively, and the rear ends of the two front main rods are pivotally connected to the rear parts of the front brackets 5 on both sides, respectively.
The front armrest 11 is also a common mechanism of the cart, and has a laterally foldable structure and a laterally non-foldable structure, and in this embodiment, the structure is not repeated.
In this embodiment, the upper link mechanism on each side further comprises a seat slide 9 pivotally connected to the side rail 3 about an eight axis X8, and a seat frame 10 slidably provided on the seat slide 9 in the front-rear length direction, and the rear portion of the seat frame 10 is pivotally connected to the push rod link 2 and/or the push rod auxiliary lever 6. The seat frame 10 meets both rigid comfort requirements and can also be used in a full vehicle frame fold.
The side arm rest 3 is pivotally connected to a front arm rest 11 through an eleven axis X11, an end of the front arm rest 11 is pivotally connected to one end of an arm link 12 through a twelve axis X12, and the other end of the arm link 12 is connected to the seat slider 9 around a thirteen axis X13. The front armrests 11 not only meet the requirements of rigidity and comfort, but also can be used for folding the whole vehicle frame.
The frame locking mechanism can be theoretically arranged at any rotation position of the four-bar mechanism, and can also be arranged between the rear sliding piece and the rear bracket, so that the connecting bar mechanism cannot deform. The present embodiment is based on convenient operation, and the push rod 1 and the push rod connecting rod 2 are arranged at the rotation connection part of each side. The specific structure of the frame locking mechanism is a common mechanism on each cart and is not repeated.
A second embodiment is a laterally non-foldable, but only one-way foldable stroller, as shown in fig. 1, comprising a stroller frame having an extended position and a folded position, a seat assembly, a front wheel assembly 18, a rear wheel assembly 19, and a frame locking mechanism for locking the stroller frame in the extended position, wherein the stroller frame comprises side brackets on both sides, and a plurality of cross bars fixedly connected between the side brackets, and is laterally non-foldable.
As shown in fig. 1, each side bracket includes:
Each side bracket comprises:
A rear bracket 4, a rear wheel assembly 19 being provided at a lower portion of the rear bracket 4;
An upper link mechanism formed at an upper portion of the rear bracket 4, including:
A push rod 1;
the lower end part of the push rod 1 is pivotally connected with the rear end part of the push rod 2 around an axis X1;
The side handrail 3 is positioned above the push rod connecting rod 2, the rear end part of the side handrail 3 is in pivot connection with the push rod 1 around a two-axis X2, the front end part of the side handrail 3 is in pivot connection with the upper end part of the rear support 4 around a three-axis X3, the push rod connecting rod 2 is in pivot connection with the rear support 4 around a four-axis X4, the four-axis X4 is positioned below the three-axis X3, and the push rod 1, the push rod connecting rod 2, the side handrail 3 and the rear support 4 form a four-bar mechanism;
Each side bracket further comprises:
a rear frame slider 8, the rear frame slider 8 being slidably disposed along the up-down length direction of the rear frame 4;
A front frame slider 7, the front frame slider 7 being pivotally connected to the push rod link 2 about a five axis X5, the five axis X5 being located below the four axis X4;
a front bracket 5, a front bracket slider 7 slidably fitted along a front-rear direction of the front bracket 5, a front wheel assembly 18 provided at a front portion of the front bracket 5;
The push rod auxiliary rod 6, the upper end of the push rod auxiliary rod 6 is pivotally connected with the upper link mechanism, in this embodiment, the upper end of the push rod auxiliary rod 6 is pivotally connected with the push rod link 2 around six axes X6, and the six axes X6 are located between the one axis X1 and the four axes X4, but in addition, the upper end of the push rod auxiliary rod 6 is also applicable to the push rod 1, the side arm rest 3 and the seat frame 10 described below. The lower part of the push rod auxiliary rod 6 and the rear part of the front bracket 5 are coaxially and pivotally connected with three parts of the rear bracket slide 8.
The seat frame 10 and the front armrest 11 are arranged as in the first embodiment. The main difference between the first embodiment and the second embodiment is that the second embodiment is not foldable in the lateral direction, so that a cross frame is not required.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.