CN112124406A - Baby stroller capable of being folded in two directions - Google Patents

Abstract

The invention discloses a bidirectionally foldable baby stroller, which comprises a left-right symmetrical side frame and a foldable transverse connection assembly. The side support includes a front wheel support, a rear wheel support, a push rod assembly, a rear support rod and a connecting rod The push rod assembly includes upper and lower push rods that are rotatably connected; the rear wheel bracket includes upper and lower rear wheel brackets that are slidably connected; the lower end of the lower push rod is rotatably connected to the upper end of the upper rear wheel bracket; the upper and lower ends of the rear support rod are respectively It is rotatably connected with the lower end of the upper push rod and the upper part of the lower rear wheel bracket; the upper end of the front wheel bracket is rotatably connected with the lower end of the rear support rod and the upper part of the lower rear wheel bracket; the front and rear ends of the connecting rod are respectively connected with the lower part of the lower push rod and the rear support rod. ;A four-link structure is formed between the upper push rod, the lower push rod, the rear support rod and the connecting rod. When the upper and lower push rods are rotated and folded, under the action of the four-link structure, the upper and rear wheel brackets are relatively lower and rearward. The wheel bracket is slid and retracted to shorten the length of the rear wheel bracket, which is convenient to improve the front and rear distance after the whole vehicle is folded.

Description

Two-way foldable stroller

technical field

The invention relates to the field of baby strollers, in particular to a bidirectionally foldable baby stroller.

Background technique

Strollers are already an essential tool for infants and young children to travel. In addition to the basic requirements of stability and safety, users pay more and more attention to the small size and lightness of strollers for storage and safety. carry.

There are many kinds of frames of existing baby strollers, and the folding principles and folding methods are different. They are roughly divided into two types: one-way folding and two-way folding. The structures of the existing two-way folding carts are relatively similar, and the designs are not novel enough to further reduce the folded volume of the whole vehicle.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a bidirectionally foldable baby stroller, which has a relatively novel structural design and can further reduce the folded volume of the whole vehicle, which is convenient for storage and carrying.

The technical solution of the present invention is: a bidirectionally foldable baby stroller, comprising a frame having an unfolded position and a folded position, and a locking mechanism for locking the frame when the frame is in the unfolded position. The frame includes a side frame arranged symmetrically on the left and right and a transverse connecting assembly arranged between the left and right side brackets and can be folded laterally, the side brackets include a front wheel bracket with a front wheel assembly installed at the bottom, and a rear wheel assembly installed at the bottom. A wheel bracket and a push rod assembly, the side bracket further includes a rear strut and a connecting rod; the push rod assembly includes an upper push rod and a lower push rod rotatably connected to the lower part of the upper push rod; the rear wheel bracket includes a lower push rod A wheel bracket and an upper rear wheel bracket slidably connected with the lower rear wheel bracket; the lower end of the lower push rod is rotatably connected with the upper end of the upper rear wheel bracket; the upper end of the rear support rod is rotatably connected with the lower end of the upper push rod, so The lower end of the rear strut is rotatably connected with the upper part of the lower rear wheel bracket; the upper end of the front wheel bracket is rotatably connected with the lower end of the rear strut and/or the upper part of the lower rear wheel bracket; the front end of the connecting rod is rotatably connected with the lower part of the lower push rod, The rear end of the connecting rod is rotatably connected with the rear support rod; the upper push rod, the lower push rod, the rear support rod and the connecting rod form a four-link structure, and the upper push rod and the lower push rod are rotated and folded relative to each other. At the time, under the continuous action of the four-link structure, the upper rear wheel bracket is driven to slide and shrink relative to the lower rear wheel bracket, thereby shortening the length of the rear wheel bracket.

Further, the lateral connection assembly includes a foot folding assembly and an X-shaped folding strut assembly; the foot folding assembly is a U-shaped opening and rearward, which includes left and right symmetrical two foot side bars and left and right two Folding footboards whose ends are respectively rotatably connected to the front ends of the two foot side rods, the front part of the foot side rods is rotatably connected to the front wheel bracket; The lower end of the rod is movably connected; the upper rear wheel bracket is inserted into the lower rear wheel bracket, the side wall of the lower rear wheel bracket is provided with a chute, and the lower end of the upper rear wheel bracket is provided with a protruding chute and is connected with the lower rear wheel bracket. A sliding piece that is slidably fitted with the chute, the rear end of the foot side rod is rotatably connected with the sliding piece on the corresponding side, and the rear end of the X-shaped folding strut assembly is movably connected with the sliding piece through the rear steering joint; when the rear wheel bracket is mounted When the lower rear wheel bracket is slid and retracted, the sliding member drives the foot folding assembly and the rear end of the X-shaped folding strut assembly to move, and when the front wheel bracket is retracted relative to the rear wheel bracket, it drives the lower part of the frame to retract left and right to realize the frame. Fold in both directions.

Further, the foldable footboard includes a left footboard and a right footboard that are rotatably connected. When the two side frames are folded left and right, the left footboard and the right footboard are folded backwards to form a V-shape with an opening facing forward.

Further, the front and rear ends of the X-shaped folding strut assembly are rotatably connected to the above-mentioned front steering joint and rear steering joint, the front steering joint and the lower end of the rear strut are rotatably connected through a transverse axis, and the rear steering joint is rotatably connected. The joint and the slider are rotatably connected through a transverse axis.

Further, the transverse connection assembly further includes a push handle folding assembly disposed between the push rods on both sides. Preferably, the push handle folding assembly is a three-section structure, which includes a left push handle, a right push handle and a middle push handle, and the outer ends of the left push handle and the right push handle are respectively on the upper part of the upper push rod on the corresponding side Rotationally connected, the left and right ends of the middle push handle are respectively rotatably connected with the inner ends of the left push handle and the right push handle.

Further, the lateral connection assembly further includes a handrail folding assembly; the handrail folding assembly includes two handrail side bars symmetrical to the left and right, and a folding handrail member whose left and right ends are respectively connected to the two handrail side bars in rotation; the handrail side bars The front part of the rod is rotatably connected with the lower push rod, the rear end of the armrest side rod is rotatably connected with the rear strut, and the armrest side rod is located above the connecting rod. Preferably, the foldable handrail is composed of a plurality of handrail segments connected end-to-end rotatably.

Further, the locking mechanism includes a push rod locking mechanism disposed at the rotational connection between the upper push rod and the lower push rod.

The advantages of the present invention are:

1. In the present invention, the rear wheel bracket is designed as an upper rear wheel bracket and a lower rear wheel bracket that are slidably connected, and a four-link structure is formed between the upper push rod, the lower push rod, the rear support rod and the connecting rod. When the upper push rod and the lower push rod rotate and fold relative to each other, under the linkage of the four-link structure, the upper rear wheel bracket is driven to slide and retract relative to the lower rear wheel bracket, thereby shortening the length of the rear wheel bracket, which is convenient to improve the overall reduction. The distance between the front and the rear after the car is folded.

2. In the present invention, the rear end of the foot folding assembly and the X-shaped folding strut assembly is rotatably connected with the sliding member at the lower end of the upper rear wheel bracket, so when the upper rear wheel bracket is slid and retracted relative to the lower rear wheel bracket, the sliding It drives the foot folding assembly and the rear end of the X-shaped folding strut assembly to move, and when the front wheel bracket is folded relative to the rear wheel bracket, it drives the lower part of the frame to fold left and right; this design is convenient for the frame to realize bidirectional folding at the same time, easy to operate, Fast, time-saving and labor-saving.

3. In the present invention, a push handle folding assembly is arranged between the upper push rods, which not only facilitates the left and right folding of the two sides of the frame, but also increases the lateral connection strength of the upper push rods on both sides, and also facilitates the folding operation of the whole vehicle. , When the whole vehicle is folded, after the locking mechanism is unlocked, the frame can be folded by pushing down and pushing the folding assembly forward.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. As far as technical personnel are concerned, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the three-dimensional structure schematic diagram of a certain angle when the present invention is in use;

Fig. 2 is the three-dimensional structure schematic diagram of another angle when the present invention is in use state;

Fig. 3 is the side structure schematic diagram when the present invention is in use;

FIG. 4 is a schematic three-dimensional structure diagram of the present invention at a certain angle during the folding process (the armrest folding assembly is not drawn);

FIG. 5 is a schematic three-dimensional structure diagram of the present invention at another angle during the folding process (the armrest folding assembly is not drawn);

Fig. 6 is the side structure schematic diagram of the present invention in the process of folding (the armrest folding assembly is not drawn);

FIG. 7 is a schematic three-dimensional structure diagram of the present invention in a folded state (the armrest folding assembly is not shown).

Among them: 1 front wheel assembly;

2 front wheel brackets;

3 rear wheel assembly;

4 rear wheel bracket; 4-1 lower rear wheel bracket; 4-1-1 chute; 4-2 upper rear wheel bracket; 4-2-1 sliding piece;

5 push rod assembly; 5-1 upper push rod; 5-2 lower push rod;

6 rear struts;

7 connecting rods;

8-foot folding assembly; 8-1 foot side bar; 8-2 folding foot plate; 8-2-1 left foot plate; 8-2-2 right foot plate;

9X type folding strut assembly;

10 Front steering joint;

11 rear steering joint;

12 Push handle folding assembly; 12-1 Left push handle; 12-2 Right push handle; 12-3 Middle push handle;

13 Armrest folding assembly; 13-1 Armrest side bars; 13-2 Folding armrest pieces.

Detailed ways

The above scheme will be further described below in conjunction with specific embodiments. It should be understood that these examples are intended to illustrate the invention and not to limit the scope of the invention. The implementation conditions adopted in the examples can be further adjusted according to specific conditions, and the unremarked implementation conditions are usually the conditions in routine experiments.

As shown in FIGS. 1 to 7 , a bidirectionally foldable stroller includes a frame having an unfolded position and a folded position, and a locking mechanism for locking the frame when the frame is in the unfolded position, so The frame includes a side frame arranged symmetrically on the left and right and a transverse connecting assembly arranged between the left and right side brackets and can be folded laterally. The side bracket includes a front wheel bracket 2 with a front wheel assembly 1 installed at the bottom, and a rear The rear wheel bracket 4, the push rod assembly 5, the rear strut 6 and the connecting rod 7 of the wheel assembly 3; the push rod assembly 5 includes an upper push rod 5-1 and a push down that is rotatably connected to the lower part of the upper push rod 5-1 rod 5-2; the rear wheel bracket 4 includes a lower rear wheel bracket 4-1 and an upper rear wheel bracket 4-2 slidably connected with the lower rear wheel bracket 4-1; the lower end of the lower push rod 5-2 is The upper end of the upper rear wheel bracket 4-2 is rotatably connected; the upper end of the rear support rod 6 is rotatably connected with the lower end of the upper push rod 5-1, and the lower end of the rear support rod 6 is rotated with the upper part of the lower rear wheel bracket 4-1 connection; the upper end of the front wheel bracket 2 is rotatably connected with the lower end of the rear strut 6 and/or the upper part of the lower rear wheel bracket 4-1; the front end of the connecting rod 7 is rotatably connected with the lower part of the lower push rod 5-2, and the connecting rod The rear end of 7 is rotatably connected with the rear strut 6; the upper push rod 5-1, the lower push rod 5-2, the rear strut 6 and the connecting rod 7 form a four-link structure.

In this embodiment, the transverse connection assembly includes a foot folding assembly 8 and an X-shaped folding strut assembly 9 . The pedal folding assembly 8 is in the shape of a U-shaped opening and backward, and includes two pedal side rods 8-1 symmetrical to the left and right and a folding pedal whose left and right ends are respectively connected with the front ends of the two pedal side rods 8-1. A foot board 8-2, the front part of the foot side rod 8-1 is rotatably connected with the front wheel bracket 2; the folding foot board 8-2 includes a left foot board 8-2-1 and a right foot board rotatably connected 8-2-2, when the frames on both sides are folded from left to right, the left footboard 8-2-1 and the right footboard 8-2-2 are folded backwards to form a V shape with the opening facing forward. The front part of the X-shaped folding strut assembly 9 is movably connected with the lower end of the rear strut 6 through the front steering joint 10; the upper rear wheel bracket 4-2 is inserted into the lower rear wheel bracket 4-1, and the lower The side wall of the rear wheel bracket 4-1 is provided with a chute 4-1-1, and the lower end of the upper rear wheel bracket 4-2 is provided with a protruding chute 4-1-1 and slides with the chute 4-1-1 The matching sliding member 4-2-1, the rear end of the pedal side rod 8-1 is rotatably connected with the sliding member 4-2-1 on the corresponding side, and the rear end of the X-shaped folding strut assembly 9 passes through the rear steering joint 11 is movably connected with the slider 4-2-1.

In this embodiment, the front and rear ends of the X-shaped folding strut assembly 9 are rotatably connected to the front steering joint 10 and the rear steering joint 11, and the front steering joint 10 and the lower end of the rear strut 6 pass through a transverse axis Rotationally connected, the rear steering joint 11 and the slider 4-2-1 are rotatably connected through a transverse axis.

In this embodiment, the transverse connection assembly further includes a push handle folding assembly 12 disposed between the push rods 5-1 on both sides. Wherein, the push handle folding assembly 12 is preferably a three-stage structure, which includes a left push handle 12-1, a right push handle 12-2 and a middle push handle 12-3, the left push handle 12-1 and the right push handle 12-1 The outer ends of 12-2 are respectively connected to the upper part of the upper push rod 5-1 on the corresponding side in rotation, and the left and right ends of the middle push handle 12-3 are respectively connected with the left push handle 12-1 and the right push handle 12-2. The inner end turns the connection. The above-mentioned setting of the push handle folding assembly 12 not only facilitates the folding of the two side frames in the left and right directions, but also increases the lateral connection strength of the upper push rods 5-1 on both sides, and also facilitates the folding operation of the whole vehicle. After the locking mechanism is unlocked, the frame can be folded by pressing the push handle folding assembly forward.

In this embodiment, the transverse connection assembly further includes an armrest folding assembly 13; the armrest folding assembly 13 includes two armrest side bars 13-1 symmetrical to left and right, and the left and right ends rotate with the two armrest side bars 13-1 respectively. The connected folding armrest 13-2; the front part of the armrest side rod 13-1 is rotatably connected with the lower push rod 5-2, the rear end of the armrest side rod 13-1 is rotatably connected with the rear strut 6, and the The armrest side bar 13 - 1 is located above the link 7 . Wherein, the foldable armrest 13-2 is preferably composed of a plurality of armrest segments connected end-to-end rotatably. The arrangement of the above-mentioned armrest folding assembly 13 not only facilitates the realization of the left and right folding of the frame on both sides, but also increases the lateral connection strength of the upper push rods 5-1 on both sides. Under the action, it can realize automatic turning and folding.

In this embodiment, the locking mechanism includes a push rod locking mechanism disposed at the rotational connection between the upper push rod 5-1 and the lower push rod 5-2, and the unlocking structure of the push rod locking mechanism is disposed at the folded position of the push handle The middle push handle 12-3 of the assembly 12 is placed on the handle 12-3, which is convenient for one-handed operation, which saves time and effort; and the operating position is high, so there is no need to lean over during operation, and the operation is convenient.

The folding principle of the present invention is:

When the whole vehicle is folded, after unlocking the locking mechanism, press the push handle folding assembly 12 forward, and the push handle folding assembly 12 folds down and drives the upper push rods 5-1 on both sides to fold left and right, so that the upper push rod is folded. 5-1 and the lower push rod 5-2 are rotated and folded relative to each other. Under the continuous action of the four-link structure, the upper push rod 5-1, the lower push rod 5-2, the rear support rod 6 and the connecting rod 7 are relatively folded. At the same time, the upper rear wheel bracket 4-2 is driven to slide and retract relative to the lower rear wheel bracket 4-1, and the upper rear wheel bracket 4-2 drives the pedal folding assembly 8 and the X-shaped folding strut through the sliding member 4-2-1. The rear end of the assembly 9 moves, and when the front wheel bracket 2 is folded relative to the rear wheel bracket 4, it drives the lower part of the frame to fold left and right, and finally realizes the bidirectional folding of the frame.

In the present invention, the rear wheel bracket 4 is designed as the upper rear wheel bracket 4-2 and the lower rear wheel bracket 4-1 which are slidably connected. When the upper push rod 5-1 and the lower push rod 5-2 are rotated and folded relatively, the four Under the linkage action of the connecting rod structure, the upper rear wheel bracket 4-2 is driven to slide and retract relative to the lower rear wheel bracket 4-1, thereby shortening the length of the rear wheel bracket 4, which is convenient to further reduce the front-to-rear distance after the whole vehicle is folded.

In the present invention, the rear ends of the foot folding assembly 8 and the X-shaped folding strut assembly 9 are rotatably connected with the sliding member 4-2-1 at the lower end of the upper rear wheel bracket 4-2, so the rear end of the upper rear wheel bracket 4-2 is rotatably connected. When the lower rear wheel bracket 4-1 is slid and retracted, the lower part of the frame can be retracted in both directions through the linkage action of the slider 4-2-1, the foot folding assembly 8 and the X-shaped folding strut assembly 9, which is convenient to operate. Quick and easy to fold, saving time and effort.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. In addition to the above-described embodiments, the present invention may also have other embodiments. All technical solutions formed by equivalent replacements or equivalent transformations fall within the scope of protection required by the present invention.

Claims (9)

1. The utility model provides a baby's shallow that can two-wayly fold, is including the frame that has expansion position and folding position and be used for locking the locking mechanical system to the frame when the frame is in expansion position, the frame includes the side frame that bilateral symmetry set up and sets up between the side frame of controlling and can transversely draw in the transverse connection subassembly, the side frame includes that front wheel support (2) that the front wheel subassembly (1) was installed to the bottom, rear wheel support (4) and push rod assembly (5) that rear wheel subassembly (3) were installed to the bottom, its characterized in that: the side support also comprises a rear support rod (6) and a connecting rod (7); the push rod assembly (5) comprises an upper push rod (5-1) and a lower push rod (5-2) which is rotatably connected with the lower part of the upper push rod (5-1); the rear wheel bracket (4) comprises a lower rear wheel bracket (4-1) and an upper rear wheel bracket (4-2) which is connected with the lower rear wheel bracket (4-1) in a sliding way; the lower end of the lower push rod (5-2) is rotatably connected with the upper end of the upper rear wheel bracket (4-2); the upper end of the rear support rod (6) is rotatably connected with the lower end of the upper push rod (5-1), and the lower end of the rear support rod (6) is rotatably connected with the upper part of the lower rear wheel bracket (4-1); the upper end of the front wheel bracket (2) is rotatably connected with the lower end of the rear stay bar (6) and/or the upper part of the lower rear wheel bracket (4-1); the front end of the connecting rod (7) is rotationally connected with the lower part of the lower push rod (5-2), and the rear end of the connecting rod (7) is rotationally connected with the rear support rod (6); a four-bar linkage structure is formed among the upper push rod (5-1), the lower push rod (5-2), the rear support rod (6) and the connecting rod (7), and when the upper push rod (5-1) and the lower push rod (5-2) rotate and fold relatively, the upper rear wheel support (4-2) is driven to slide and retract relative to the lower rear wheel support (4-1) under the linkage effect of the four-bar linkage structure, so that the length of the rear wheel support (4) is shortened.

2. A bi-directionally collapsible stroller as recited in claim 1, further comprising: the transverse connecting assembly comprises a pedal folding assembly (8) and an X-shaped folding stay bar assembly (9); the pedal folding assembly (8) is U-shaped with a backward opening and comprises two pedal side rods (8-1) which are bilaterally symmetrical and a folding pedal (8-2) with the left end and the right end respectively rotatably connected with the front ends of the two pedal side rods (8-1), and the front part of each pedal side rod (8-1) is rotatably connected with the front wheel bracket (2); the front part of the X-shaped folding support rod assembly (9) is movably connected with the lower end of the rear support rod (6) through a front steering joint (10); the upper rear wheel support (4-2) is inserted into the lower rear wheel support (4-1), a sliding groove (4-1-1) is formed in the side wall of the lower rear wheel support (4-1), a sliding piece (4-2-1) which extends out of the sliding groove (4-1-1) and is in sliding fit with the sliding groove (4-1-1) is arranged at the lower end of the upper rear wheel support (4-2), the rear end of the pedal side lever (8-1) is rotatably connected with the sliding piece (4-2-1) on the corresponding side, and the rear end of the X-shaped folding supporting rod assembly (9) is movably connected with the sliding piece (4-2-1) through a rear steering joint (11); when the upper rear wheel support (4-2) slides and retracts relative to the lower rear wheel support (4-1), the sliding part (4-2-1) drives the pedal folding component (8) and the rear end of the X-shaped folding support rod component (9) to move, and the lower part of the frame is driven to retract left and right while the front wheel support (2) retracts relative to the rear wheel support (4), so that the frame is retracted bidirectionally.

3. A bi-directionally collapsible stroller as recited in claim 2, further comprising: the folding foot pedal (8-2) comprises a left foot pedal (8-2-1) and a right foot pedal (8-2-2) which are connected in a rotating mode, and when the frames on the two sides are folded left and right, the left foot pedal (8-2-1) and the right foot pedal (8-2-2) are folded backwards to be folded into a V shape with a forward opening.

4. A bi-directionally collapsible stroller as recited in claim 2, further comprising: the front end and the rear end of the X-shaped folding support rod assembly (9) are rotatably connected with the front steering joint (10) and the rear steering joint (11), the front steering joint (10) is rotatably connected with the lower end of the rear support rod (6) through a transverse shaft, and the rear steering joint (11) is rotatably connected with the sliding piece (4-2-1) through a transverse shaft.

5. A bi-directionally collapsible stroller as recited in claim 2, further comprising: the transverse connecting assembly also comprises a push handle folding assembly (12) arranged between the push rods (5-1) on the two sides.

6. A bi-directionally collapsible stroller as recited in claim 5, further comprising: the push handle folding assembly (12) is of a three-section structure and comprises a left push handle (12-1), a right push handle (12-2) and a middle push handle (12-3), the outer ends of the left push handle (12-1) and the right push handle (12-2) are respectively and rotatably connected with the upper parts of the upper push rods (5-1) on the corresponding sides, and the left end and the right end of the middle push handle (12-3) are respectively and rotatably connected with the inner ends of the left push handle (12-1) and the right push handle (12-2).

7. A bi-directionally collapsible stroller as recited in claim 2, further comprising: the transverse connection assembly further comprises a handrail folding assembly (13); the handrail folding component (13) comprises two handrail side rods (13-1) which are symmetrical left and right, and folding handrail pieces (13-2) of which the left end and the right end are respectively connected with the two handrail side rods (13-1) in a rotating way; the front part of the handrail side rod (13-1) is rotationally connected with the lower push rod (5-2), the rear end of the handrail side rod (13-1) is rotationally connected with the rear support rod (6), and the handrail side rod (13-1) is positioned above the connecting rod (7).

8. A bi-directionally collapsible stroller as recited in claim 7, further comprising: the folding handrail piece (13-2) is formed by connecting a plurality of handrail sections which are connected end to end in a rotating way.

9. A bi-directionally collapsible stroller as recited in claim 1, further comprising: the locking mechanism comprises a push rod locking mechanism arranged at the rotary connection part of the upper push rod (5-1) and the lower push rod (5-2).

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