CN108657259A - Foldable baby stroller frame and stroller - Google Patents

Abstract

The invention belongs to stroller technical fields, disclose a kind of foldable baby stroller frame, rotate the cross bar of pin joint with the vehicle frame left and right sides respectively including vehicle frame and both ends, vehicle frame includes the push-rod assembly being symmetrical set, fore-stock component and after-poppet component, fore-stock component lower end is equipped with front component, after-poppet component lower end is equipped with wheel assembly, the lower end of push-rod assembly is with the equal pin joint in upper end of after-poppet component in the upper end of fore-stock component, further include connecting rod and strut, connecting rod includes the front rod and back link of mutual rotation pin joint, front rod rotates pin joint with fore-stock component, back link rotates pin joint with after-poppet component, the upper and lower ends of strut respectively with push-rod assembly and link rotatable pin joint.The present invention also provides a kind of strollers including above-mentioned stroller vehicle frame.By above structure, bi-directional folded, the volume after folding smaller that stroller vehicle frame is front and back and controls is realized, storage easy to carry brings great convenience to user.

Description

Foldable stroller frame and stroller

technical field

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

Background technique

Baby strollers are already a necessary tool for infants and young children to travel. In addition to pursuing the basic requirements of stability and safety of baby strollers, users pay more and more attention to the characteristics of small size, light weight, and foldable baby strollers. The baby stroller with the above characteristics can be easily placed in the trunk of the car, and the volume occupied by it can also be reduced on the bus or train, which greatly facilitates travel and portability.

Baby strollers currently on the market generally include a vehicle frame, a front wheel assembly and a rear wheel assembly. The vehicle frame includes a front bracket assembly, a rear bracket assembly and a push rod assembly, and the vehicle frame can be locked when unfolded for use. However, the existing baby strollers can only be folded forward and backward when being folded, but cannot be folded left and right, resulting in a large volume after folding, which is inconvenient to place and carry, and cannot meet the needs of users.

Contents of the invention

The purpose of the present invention is to provide a foldable baby stroller frame and baby stroller, so as to solve the problems that the existing baby stroller cannot be folded left and right and has a large volume after folding.

For reaching this purpose, the present invention adopts following technical scheme:

A foldable baby stroller frame, comprising a frame and crossbars whose two ends are pivotally pinned to the left and right sides of the frame respectively, the frame includes a push rod assembly, a front bracket assembly and a rear A bracket assembly, the lower end of the front bracket assembly is provided with a front wheel assembly, the lower end of the rear bracket assembly is provided with a rear wheel assembly, the lower end of the push rod assembly and the upper end of the rear bracket assembly are both pinned to the upper end of the front bracket assembly, and includes A connecting rod and a strut, wherein the connecting rod includes a front connecting rod and a rear connecting rod which are pinned in rotation with each other, the front connecting rod is pinned in rotation with the front bracket assembly, and the rear connecting rod is pinned in rotation with the rear bracket assembly, The upper and lower ends of the strut are respectively pinned to the push rod assembly and the connecting rod for rotation.

Preferably, the vehicle frame further includes a seat post and a seat post stay symmetrically arranged left and right, the rear end of the seat post is pinned to the push rod assembly, and the upper and lower ends of the seat post stay are respectively connected , The front bracket assembly is rotated and pinned.

Preferably, a first locking mechanism is provided between the push rod assembly and the front bracket assembly, and when the baby stroller frame is in an unfolded state, the first locking mechanism locks the baby stroller frame.

Preferably, the pin connection axis between the connecting rod and the strut is coaxial with the pin connection axis between the front connecting rod and the rear connecting rod.

Preferably, the push rod assembly, the front bracket assembly and the rear bracket assembly are pinned in different axes.

Preferably, the front bracket assembly includes an upper front frame rod and a front leg tube, the upper front frame rod and the front leg tube are pinned in rotation, and a second locking mechanism is provided between the upper front frame rod and the front leg tube.

Preferably, the push rod assembly includes a lower push rod, an upper push rod and a push handle rod, the lower push rod and the upper push rod are pivotally connected with each other, and a third locking mechanism is arranged between the two. The push rod is slidingly matched with the upper push rod, and a fourth locking mechanism is provided at least at one working position between the two.

Preferably, there are at least three cross bars, and at least one cross bar is connected between the left and right symmetrical push rod assemblies, between the front bracket assemblies and between the rear bracket assemblies;

When the vehicle frame is fully folded, the axes of the pinned shafts between the push rod assembly, the front bracket assembly and the rear bracket assembly on the left side and the cross bar all coincide, and the push rod assembly, the front bracket assembly and the rear bracket assembly on the right side The axes of the pinned shafts between the components and the crossbar are all coincident;

When the vehicle frame is in the unfolded state, the axes of the pinned shafts between the push rod assembly, the front bracket assembly and the rear bracket assembly on the left side and the cross bar are not coincident, and the push rod assembly, the front bracket assembly and the rear bracket assembly on the right side are not coincident. The axes of the pinned shafts between the bracket assembly and the crossbar are all misaligned.

Preferably, a cross bar is connected between the struts on both sides,

When the vehicle frame is fully folded, the pin joint axis between the left strut and the cross bar coincides with the axis of the pin joint shaft between the left push rod assembly and the cross bar, and the right strut and cross bar The pinning axis between the rods coincides with the axis of the pinning axis between the push rod assembly on the right and the cross bar;

When the vehicle frame is in the unfolded state, the axis of the pin joint shaft between the left strut and the cross bar does not coincide with the axis of the pin joint shaft between the left push rod assembly and the cross bar, and the right strut and cross bar do not coincide. The axis of the pinning between the crossbars does not coincide with the axis of the pinning between the pushrod assembly on the right and the crossbar.

The present invention also provides a baby stroller, including the above-mentioned foldable baby stroller frame.

Through the above-mentioned structure, the present invention realizes bidirectional folding of the front and rear and left and right sides of the baby stroller frame, and the folded size is smaller, which is easy to carry and store, and brings great convenience to users.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of foldable stroller frame of the present invention;

Fig. 2 is a side view of the foldable stroller frame of the present invention;

Fig. 3 is a schematic diagram of the state in which the foldable baby stroller frame push bar of the present invention slides into the upper push rod;

Fig. 4 is a schematic diagram of the foldable stroller frame of the present invention after the upper push rod is folded;

Fig. 5 is a schematic view of the foldable stroller frame of the present invention during the process of folding the lower push rod;

Fig. 6 is a schematic diagram of the foldable stroller frame of the present invention after the push rod is completely folded down;

Fig. 7 is a schematic diagram of the state of the foldable stroller frame of the present invention after the front leg tube is folded;

Fig. 8 is a schematic view of the foldable baby stroller frame of the present invention after being folded left and right.

In the picture:

1. Vehicle frame; 2. Cross bar; 1-1. Push rod assembly; 1-2. Front bracket assembly; 1-3. Rear bracket assembly; 1-4. Front wheel assembly; 1-5. Rear wheel assembly; 1-6, connecting rod; 1-7, strut; 1-8, seat post; 1-9, seat post stay; 1-1-1, lower push rod; 1-1-2, upper push rod; 1-1-3, push handle bar; 1-2-1, upper front frame bar; 1-2-2, front leg tube; 1-6-1, front connecting rod; 1-6-2, rear connecting rod.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

The present invention provides a foldable stroller frame. In this embodiment, the directional terms such as "left", "right", "front", "rear", "up" and "down" are Both are directions felt by the user when the user is pushing the baby stroller.

As shown in Figures 1 and 2, the foldable stroller frame includes a frame 1 and crossbars 2 that are pinned to the left and right sides of the frame 1 at both ends, and the frame 1 includes symmetrically arranged The push rod assembly 1-1, the front bracket assembly 1-2 and the rear bracket assembly 1-3, wherein the lower end of the front bracket assembly 1-2 is provided with a front wheel assembly 1-4, and the lower end of the rear bracket assembly 1-3 is provided with a rear wheel Assemblies 1-5, the lower end of the push rod assembly 1-1 and the upper end of the rear bracket assembly 1-3 are all pinned to the upper end of the front bracket assembly 1-2, and the push rod assembly 1-1, the front bracket assembly 1-2 and The three of the rear support components 1-3 are connected by different shaft pins.

A first locking mechanism (not shown) is arranged between the push rod assembly 1-1 and the front bracket assembly 1-2. rack to lock.

The above-mentioned push rod assembly 1-1 includes a lower push rod 1-1-1, an upper push rod 1-1-2 and a push handle rod 1-1-3, a lower push rod 1-1-1 and an upper push rod 1-1 -2 are rotated and pinned, and a third locking mechanism (not shown) is provided between the two, and the lower push rod 1-1-1 and the upper push rod 1-1-2 are controlled by the third locking mechanism. Locking and unlocking: the above-mentioned push handle bar 1-1-3 is slidingly matched with the upper push bar 1-1-2, and a fourth locking mechanism (not shown in the figure) is provided at least at one working position between the two, That is, when the push rod 1-1-3 stretches out the upper push rod 1-1-2 fully or when the push handle 1-1-3 fully stretches into the upper push rod 1-1-2, the fourth locking mechanism Push bar 1-1-3 and push up bar 1-1-2 to lock and unlock.

Referring to Fig. 2, the front bracket assembly 1-2 includes an upper front frame rod 1-2-1 and a front leg tube 1-2-2, and the upper front frame rod 1-2-1 and the front leg tube 1-2-2 rotate Pin connection, a second locking mechanism (not shown) is provided between the upper front frame rod 1-2-1 and the front leg pipe 1-2-2, which can align the upper front frame rod 1-2-1 and the front foot Tube 1-2-2 for locking and unlocking. The front wheel assembly 1-4 connected at the front leg tube 1-2-2 can be connected with the front leg tube 1-2-2 by rotating the pin connection between the upper front frame rod 1-2-1 and the front leg tube 1-2-2. 2 fold together.

In this embodiment, as shown in Figure 1, the frame of the foldable stroller further includes a connecting rod 1-6 and a strut 1-7, and the connecting rod 1-6 includes a front connecting rod 1- 6-1 and the rear connecting rod 1-6-2, the front connecting rod 1-6-1 is connected with the rotating pin of the front bracket assembly 1-2, and the rear connecting rod 1-6-2 is connected with the rotating pin of the rear bracket assembly 1-3 , the upper and lower ends of the strut 1-7 are respectively pinned to the push rod assembly 1-1 and the connecting rod 1-6 for rotation. Specifically, the pin connection axis between the above-mentioned connecting rod 1-6 and the strut 1-7 is coaxial with the pin connection shaft between the front connecting rod 1-6-1 and the rear connecting rod 1-6-2.

In this embodiment, the vehicle frame 1 also includes seatposts 1-8 and seatpost struts 1-9, which are symmetrically arranged left and right. The rear ends of the seatposts 1-8 are pinned to the push rod assembly 1-1. The upper and lower ends of the strut 1-9 are respectively connected with the seat post 1-8 and the front bracket assembly 1-2 by rotating pins.

In this embodiment, at least three crossbars 2 are provided, and at least one crossbar is connected between the left and right symmetrical push rod assemblies 1-1, between the front bracket assemblies 1-2 and between the rear bracket assemblies 1-3. A cross bar 2 is used for folding left and right of the stroller frame.

When the vehicle frame 1 is fully folded, the axes of the pinned shafts between the push rod assembly 1-1 on the left side, the front bracket assembly 1-2 and the rear bracket assembly 1-3 and the cross bar 2 are all coincident, and the push rod assembly on the right side The axes of the pinned shafts between the push rod assembly 1-1, the front bracket assembly 1-2 and the rear bracket assembly 1-3 and the cross bar 2 are all coincident; when the vehicle frame 1 is in the unfolded state, the left push rod assembly 1-1. The axes of the pinned shafts between the front bracket assembly 1-2 and the rear bracket assembly 1-3 and the cross bar 2 are not coincident. The push rod assembly 1-1 on the right side, the front bracket assembly 1-2 and The axes of the pinned shafts between the rear bracket assemblies 1-3 and the crossbar 2 are not coincident. Through the above structural arrangement, it can be ensured that the entire vehicle frame 1 can be folded smoothly when folding left and right.

In this embodiment, preferably, a cross bar 2 is also connected between the struts 1-7 on both sides. When the vehicle frame 1 is fully folded, the left strut 1-7 and the cross bar 2 The pin joint axis coincides with the axis of the pin joint shaft between the left push rod assembly 1-1 and the cross bar 2, and the pin joint shaft between the right side brace 1-7 and the cross bar 2 coincides with the right push rod assembly 1-1. The axis of the pin joint shaft between the bar assembly 1-1 and the cross bar 2 coincides; The axis of the pin joint shaft between the push rod assembly 1-1 and the cross bar 2 does not coincide, and the pin joint shaft between the right strut 1-7 and the cross bar 2 is the same as the right push rod assembly 1-1 and The axes of the pinned shafts between the crossbars 2 do not coincide. The strength of the entire stroller frame is further improved for easy folding.

The collapsible stroller frame work process of the present invention is as follows:

When folding the foldable baby stroller frame, firstly, the locked state of the whole vehicle is released by the first locking mechanism, and then the push handle bar 1-1-3 and the upper push bar 1-1-2 are released by the fourth locking mechanism. between the lock, slide the push rod 1-1-3 into the upper push rod 1-1-2 (as shown in Figure 3), and then release the lower push rod 1-1-1 and the upper push rod through the third locking mechanism Lock between 1-1-2, fold back the upper push rod 1-1-2 (as shown in Figure 4), after the upper push rod 1-1-2 is folded, fold forward the lower push rod 1- 1-1, at this time, the lower push rod 1-1-1 will drive the front bracket assembly 1-2, the rear bracket assembly 1-3, the connecting rod 1-6, the strut 1-7, the seat post 1-8 and the seat post stay The rods 1-9 are folded together, the folding process is shown in Figure 5, until it is fully folded (as shown in Figure 6), the front frame rod and the front leg tube 1-2-2 are unlocked through the second locking mechanism, and then the front leg tube 1-2-2 and the front wheel assembly 1-4 are folded, and the folded stroller frame is shown in FIG. 7 . Finally, place the left front bracket assembly 1-2, rear bracket assembly 1-3, link 1-6, strut 1-7, seat post 1-8, and seat post strut 1-9 from left to right Fold inward, put the front bracket assembly 1-2, rear bracket assembly 1-3, connecting rod 1-6, strut 1-7, seatpost 1-8 and seatpost strut 1-9 on the right side from the right The left side is folded inward, that is, the folding of the entire foldable stroller frame is completed, as shown in FIG. 8 .

When unfolding the frame of the foldable baby stroller, it is only necessary to reverse the process of folding the frame of the baby stroller to realize the unfolding of the frame of the foldable baby stroller, which will not be repeated here.

The present invention also provides a baby stroller, including the above-mentioned foldable baby stroller frame, through the above-mentioned foldable baby stroller frame, two-way folding of the front and back and left and right sides of the baby stroller frame is realized, and the volume after folding is Smaller, easy to carry and store, bringing great convenience to users.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A collapsible stroller frame, characterized in that it comprises a frame (1) and crossbars (2) whose two ends are pinned to the left and right sides of the frame (1) respectively, said frame (1) It includes a push rod assembly (1-1), a front bracket assembly (1-2) and a rear bracket assembly (1-3), which are symmetrically arranged left and right, and the lower end of the front bracket assembly (1-2) is provided with a front The wheel assembly (1-4), the rear wheel assembly (1-5) is provided at the lower end of the rear support assembly (1-3), and the lower end of the push rod assembly (1-1) is connected with the rear support assembly (1-3) The upper ends are all pinned to the upper end of the front bracket assembly (1-2), and also include connecting rods (1-6) and struts (1-7), and the connecting rods (1-6) include front connecting rod (1-6-1) and rear connecting rod (1-6-2), the front connecting rod (1-6-1) is pinned to the front bracket assembly (1-2), and the rear connecting rod The rod (1-6-2) is pivotally connected with the rear bracket assembly (1-3), and the upper and lower ends of the support rod (1-7) are respectively connected with the push rod assembly (1-1) and the connecting rod (1- 6) Rotate the pin connection. 2. The foldable stroller frame according to claim 1, characterized in that, the frame (1) further comprises seatposts (1-8) and seatpost struts (1) arranged symmetrically left and right. -9), the rear end of the seat post (1-8) is pinned to the push rod assembly (1-1), and the upper and lower ends of the seat post stay (1-9) are respectively connected to the seat post (1- 8), the front bracket assembly (1-2) is rotated and pinned. 3. The foldable stroller frame according to claim 1, characterized in that a first locking mechanism is provided between the push rod assembly (1-1) and the front bracket assembly (1-2), When the baby stroller frame is in the unfolded state, the first locking mechanism locks the baby stroller frame. 4. The foldable stroller frame according to claim 1, characterized in that, the pin connection shaft between the connecting rod (1-6) and the strut (1-7) is connected to the front connecting rod ( 1-6-1) and the pinned shaft between the rear link (1-6-2) are coaxial. 5. The foldable stroller frame according to claim 1, characterized in that, the push rod assembly (1-1), the front support assembly (1-2) and the rear support assembly (1-3) Between the different axis pin connection. 6. The foldable stroller frame according to claim 1, characterized in that, the front bracket assembly (1-2) comprises an upper front frame rod (1-2-1) and a front leg tube (1-2-1) 2-2), the upper front frame rod (1-2-1) and the front leg tube (1-2-2) are rotated and pinned, and the upper front frame rod (1-2-1) is connected to the front leg tube ( 1-2-2) is provided with a second locking mechanism. 7. The foldable stroller frame according to claim 1, characterized in that, the push rod assembly (1-1) comprises a lower push rod (1-1-1), an upper push rod (1-1-1) 1-2) and the push bar (1-1-3), the rotation pin connection between the lower push rod (1-1-1) and the upper push rod (1-1-2), and between the two A third locking mechanism is provided, the push handle rod (1-1-3) is slidingly matched with the upper push rod (1-1-2), and a fourth locking mechanism is provided between the two at least at one working position . 8. The foldable baby stroller frame according to any one of claims 1-7, characterized in that the crossbar (2) is provided with at least 3 symmetrical push rod assemblies (1-1 ), between the front support components (1-2) and between the rear support components (1-3) are connected with at least one cross bar (2); When the vehicle frame (1) is fully folded, the left push rod assembly (1-1), the front bracket assembly (1-2), the rear bracket assembly (1-3) and the cross bar (2) The axes of the pinned shafts are all coincident, and the pinned shafts between the right push rod assembly (1-1), the front bracket assembly (1-2), the rear bracket assembly (1-3) and the cross bar (2) Axes are coincident; When the vehicle frame (1) is in the unfolded state, the left push rod assembly (1-1), the front bracket assembly (1-2), the rear bracket assembly (1-3) and the cross bar (2) The axes of the pinned shafts are not coincident, and the pinned shafts between the right push rod assembly (1-1), the front bracket assembly (1-2), the rear bracket assembly (1-3) and the cross bar (2) The axes are not coincident. 9. The foldable stroller frame according to claim 8, characterized in that a cross bar (2) is connected between the struts (1-7) on both sides, When the vehicle frame (1) is fully folded, the pin connection shaft between the left side strut (1-7) and the cross bar (2) is connected with the left side push rod assembly (1-1) and the cross bar ( 2) The axes of the pinned shafts between are coincident, and the pinned shafts between the right brace (1-7) and the cross bar (2) are the same as the right push rod assembly (1-1) and the cross bar ( 2) The axes of the pinned shafts coincide; When the vehicle frame (1) is in the unfolded state, the pin connection shaft between the left strut (1-7) and the cross bar (2) is connected with the left push rod assembly (1-1) and the cross bar ( 2) The axes of the pinned shafts do not coincide, the pinned shaft between the right strut (1-7) and the cross bar (2) is the same as the right push rod assembly (1-1) and the cross bar (2) The axes of the pinned shafts do not coincide. 10. A baby stroller, characterized in that it comprises the foldable baby stroller frame according to any one of claims 1-9.