CN108945076B - Baby stroller - Google Patents

Abstract

The present invention discloses a baby stroller, wherein the side brackets on each side of the stroller frame each include a front support rod, a rear support rod and a push rod extending in the up-down direction, the upper part of the rear support rod is rotatably connected to the front support rod through a first axis, the upper part of the front support rod and the lower part of the push rod are rotatably connected through a second axis, the side brackets on each side also include a connecting assembly arranged between the front support rod and the rear support rod, and a sliding member arranged on the front support rod and capable of sliding up and down, an upper connecting rod pivotally connected to the push rod at one end and pivotally connected to the sliding member at the other end, when the stroller frame is in an unfolded state, the push rod has a forward push working position extending upwardly from the front to the rear and a reverse push working position extending upwardly from the rear to the front. The baby stroller has a small number of rods and a simple structure, and the reversing operation of the push rod and the unfolding and folding operation of the stroller frame are very convenient.

Description

Baby stroller

Technical Field

The invention relates to a baby stroller, in particular to a baby stroller with a reversible push rod.

Background Art

For the convenience of storage and carrying, most baby strollers are foldable. Most of the baby strollers can only be pushed in one direction, that is, the person pushes the stroller from the back to the front. In this way, the condition of the infant cannot be observed at any time during the pushing process, which is not convenient for the pusher to interact with the infant.

Currently, there are many push rod reversible baby strollers on the market. The push rod can also be flipped to the front side of the stroller, so that a person can stand in the front side of the stroller and push the stroller towards the child. Existing push rod reversible baby strollers have various structures that can realize the front and rear reversal of the push rod. Most of them have the problem of complicating the overall structure of the stroller frame, affecting the folding operation of the frame and the control of production costs.

Summary of the invention

The purpose of the present invention is to provide a new-structure baby stroller with a reversible push rod.

To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a baby stroller, comprising a stroller frame in an unfolded state, a wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state, the stroller frame comprising two side brackets arranged on the left and right sides, each side bracket comprising a front support rod, a rear support rod and a push rod respectively extending in the up-down direction, the upper part of the rear support rod being rotatably connected to the front support rod through a first axis, the upper part of the front support rod and the lower part of the push rod being rotatably connected through a second axis, the axis center line of the first axis and the axis center line of the second axis extending parallel to or in line with each other,

The side bracket on each side also includes a connecting assembly arranged between the front support rod and the rear support rod, a sliding member arranged on the front support rod so as to slide up and down, and an upper connecting rod pivotally connected at one end to the push rod and pivotally connected at the other end to the sliding member. When the cart frame is in the unfolded state, the push rod has a forward pushing working position extending upward from the front to the rear and a reverse pushing working position extending upward from the rear to the front.

Preferably, the connecting assembly comprises a lower connecting rod extending in the front-rear direction, a rear pivot of the lower connecting rod is connected to the rear support rod, and a front pivot of the lower connecting rod is connected to the sliding member.

Furthermore, the lower portion of the upper connecting rod is pivotally connected to the sliding member via a third axis, the front portion of the lower connecting rod is pivotally connected to the sliding member via a fourth axis, and the axis centerline of the third axis is parallel to the axis centerline of the fourth axis.

As another embodiment, the lower portion of the upper link is pivotally connected to the sliding member via a third axis, the front portion of the lower link is pivotally connected to the sliding member via a fourth axis, and the axis centerline of the third axis extends colinearly with the axis centerline of the fourth axis.

Furthermore, a crank slider mechanism is formed between the front support rod, the rear support rod, the lower connecting rod and the sliding member, and another crank slider mechanism is formed between the front support rod, the push rod, the upper connecting rod and the sliding member.

Furthermore, the upper connecting rods and the lower connecting rods on both sides are located between the front supporting rods, the rear supporting rods and the push rods on both sides along the left-right direction.

Preferably, when the push rod is in the forward thrust working position, the front support rod and the upper connecting rod extend in the same length direction; when the push rod is in the reverse thrust working position, the upper connecting rod is located at the front side of the second shaft.

Preferably, when the cart frame is in a folded state, the front support rod and the rear support rod are folded together in a front-to-rear direction, and the push rod is turned over and folded at the front side of the front support rod.

Preferably, the locking mechanism comprises a locking joint provided between the front support rod and the push rod for locking the two, and the locking joint locks the push rod in the forward push working position and the reverse push working position.

Furthermore, the side bracket on each side also includes a push handle, the lower pivot of the push handle is connected to the upper part of the push rod, a push handle locking piece is provided between the push rod and the push handle, and the push handle is linked to unlock the locking joint when it is flipped relative to the push rod.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the baby stroller of the present invention has a small number of rods and a simple structure, which effectively solves the problems of complex structure and high production cost of the reversing stroller; at the same time, on the baby stroller, the reversing operation of the push rod and the unfolding and folding operation of the stroller frame are very convenient, and the volume of the stroller frame after folding is also very compact, which is convenient for users' daily use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a baby stroller in an unfolded state according to Embodiment 1 of the present invention;

FIG2 is a side view of the baby stroller of Embodiment 1 in the unfolded state, wherein the push rod is in the forward pushing working position;

FIG3 is a side view of the baby stroller of Embodiment 1 in the unfolded state, wherein the push rod is in the reverse push working position;

FIG4 is a side view of the baby stroller of Example 1 when the handle is folded;

FIG5 is a side view of the baby stroller of Example 1 in a semi-folded state;

FIG6 is a side view of the baby stroller of Example 1 in a folded state;

Figure 7 is a perspective view of the baby stroller of Example 2 in an unfolded state;

FIG8 is a side view of the baby stroller of Example 2 in a folded state;

Wherein: 100, side bracket; 101, front crossbar; 210, rear crossbar;

1. Front support rod; 2. Rear support rod; 3. Push rod; 4. Sliding piece (sleeve); 5. Upper connecting rod; 6. Lower connecting rod; 7. Push handle; 8. Locking joint; 9. Push handle locking piece; 11. First axis; 12. Second axis; 13. Third axis; 14. Fourth axis; 15. Fifth axis; 16. Sixth axis; 10. Front wheel; 20. Rear wheel.

DETAILED DESCRIPTION

The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to the baby stroller shown in FIGS. 1 to 6 , the baby stroller comprises a stroller frame having an unfolded state and a folded state, a wheel assembly disposed at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state. The stroller frame comprises two side brackets 100 disposed on the left and right sides, each side bracket 100 comprises a front support rod 1, a rear support rod 2 and a push rod 3 extending in the up-down direction, and the wheel assembly comprises a front wheel 10 disposed at the lower part of the front support rod 1 and a rear wheel 20 disposed at the lower part of the rear support rod 2.

As shown in FIG2 , the upper portion of the rear support rod 2 is rotatably connected to the front support rod 1 via the first shaft 11, and the upper portion of the front support rod 1 is rotatably connected to the lower portion of the push rod 3 via the second shaft 12. The first shaft 11 and the second shaft 12 are two shafts whose axis centers are parallel to each other, and the first shaft 11 is connected to the upper portion of the second shaft 12 on the front support rod 1. In other embodiments, the first shaft 11 and the second shaft 12 may also be arranged so that their axis centers extend colinearly.

The side bracket 100 on each side also includes a connecting assembly arranged between the front support rod 1 and the rear support rod 2, a sliding member 4 slidably arranged on the front support rod 1, and an upper connecting rod 5 arranged between the pushing rod 3 and the sliding member 4, wherein the sliding member 4 adopts a sliding sleeve slidably mounted on the front support rod 1, one end of the upper connecting rod 5 is pivotally connected to the sliding sleeve 4 through a third axis 13, and the other end of the upper connecting rod 5 is pivotally connected to the pushing rod 3 through a fifth axis 15.

The connecting assembly is mainly used for relative expansion and folding between the front support rod 1 and the rear support rod 2. When the cart frame is in the expanded state, the connecting assembly is supported between the front support rod 1 and the rear support rod 2 so that the front wheel 10 and the rear wheel 20 are expanded in the front-to-back direction and supported on the ground. When the cart frame is folded, the front support rod 1 and the rear support rod 2 are driven by the connecting assembly to rotate relative to each other so that the front wheel 10 and the rear wheel 20 are brought together in the front-to-back direction. Referring to FIGS. 1 to 3, in this embodiment, the connecting assembly includes a lower connecting rod 6 extending in the front-to-back direction, the front portion of the lower connecting rod 6 is pivotally connected to the sliding sleeve 4 through a fourth shaft 14, and the rear portion of the lower connecting rod 6 is pivotally connected to the rear support rod 2 through a sixth shaft 16. Here, the fourth shaft 14 and the third shaft 13 are two shafts whose axis lines are parallel to each other, and the third shaft 13 is located above the fourth shaft 14 on the sliding sleeve 4.

Thus, on each side bracket 100, a crank slider mechanism is formed between the front support rod 1, the rear support rod 2, the lower connecting rod 6 and the sliding sleeve 4, and another crank slider mechanism is formed between the front support rod 1, the push rod 3, the upper connecting rod 5 and the sliding sleeve 4. The locking mechanism includes a locking joint 8 provided between the front support rod 1 and the push rod 3 for locking the two. When the locking joint 8 is locked, the front support rod 1, the rear support rod 2 and the push rod 3 in the side bracket 100 on each side are relatively locked.

Referring to Figures 1 to 4, when the cart frame is in the unfolded state, the front support rod 1 and the rear support rod 2 in each side bracket 100 are relatively unfolded and supported on the ground by the front wheel 10 and the rear wheel 20, and a stable triangular structure is formed between the front support rod 1, the rear support rod 2 and the lower connecting rod 6. The push rod 3 has a forward push working position extending upward from the front to the rear as shown in Figure 2, and a reverse push working position extending upward from the rear to the front as shown in Figure 3. The locking joint 8 is locked so that each side bracket is locked in the unfolded state, and the push rod 3 is locked in the above-mentioned forward push working position or reverse push working position.

As shown in Figures 1 and 2, when the push rod 3 is in the forward push working position, the front support rod 1 and the upper connecting rod 5 extend roughly in the same length direction; when the push rod 3 is in the reverse push working position, the upper connecting rod 5 flips to the front of the second axis 12 and is supported between the sliding sleeve 4 and the push rod 3. When the push rod 3 is in the unfolded state, if the user needs to convert the push rod 3 from the forward push working position to the reverse push working position, he only needs to unlock the locking joint 8 first, and then flip the push rod 3 forward, and the push rod 3 drives the upper connecting rod 5 to flip forward accordingly. The sliding sleeve 4 slides up and down along the front support rod 1 slightly during the forward flipping of the push rod 3, so that the push rod 3 and the upper connecting rod 5 can be smoothly flipped to the front side, and the locking joint 8 is re-locked, so that the push rod frame is locked, and the push rod 3 is locked in the reverse push working position. Vice versa.

As shown in the drawings, each side bracket 100 further includes a push handle 7, the lower part of which is pivotally connected to the upper part of the push rod 3, and a push handle locking member 9 is provided between the push rod 3 and the push handle 7. When the push handle locking member 9 is unlocked and the push handle 7 is flipped relative to the push rod 3, the locking joint 8 is unlocked in conjunction. In this embodiment, the push handles 7 on both sides are integrally arranged and are in a U-shape with the opening facing downward, and the cart frame further includes a front cross bar 101 provided between the lower parts of the front support rods 1 on both sides and a rear cross bar 201 provided between the lower parts of the rear support rods 2 on both sides, and the upper connecting rods 5 and the lower connecting rods 6 on both sides are located between the front support rods 1, the rear support rods 2 and the push rods 3 on both sides along the left-right direction.

When the stroller frame needs to be folded, as shown in Figure 4, the push handle locking piece 9 is first unlocked, and the push handle 7 is flipped relative to the push rod 3 and folded to the rear side of the push rod 3; the folding of the push handle 7 causes the locking joint 8 to be unlocked in conjunction. At this time, as shown in Figure 5, the push rod 3 is driven to flip forward, so that the upper connecting rod 5 can be flipped and drive the sliding sleeve 4 to slide downward along the front support rod 1, so that the front support rod 1 and the rear support rod 2 are driven to rotate relative to each other under the action of the lower connecting rod 6 and gradually folded in the front and rear directions until the folding is completed, forming the structure shown in Figure 6. In this folded state, the frame is supported on the ground by the front wheel 10 and the top of the push rod 3 to form a self-supporting structure.

Example 2

As shown in Fig. 7 and Fig. 8, the main difference between this embodiment and embodiment 1 is that in this embodiment, the third shaft 13 and the fourth shaft 14 are coaxially arranged, that is, the lower part of the upper connecting rod 5 and the front part of the lower connecting rod 6 are rotatably connected to the sliding sleeve 4 around the same rotation center line. On the cart frame, the push rod 3 also has a forward push working position and a reverse push working position, and its conversion principle is the same as that of embodiment 1, and the folding principle of the cart frame is also the same as that of embodiment 1, which will not be repeated here.

In summary, the baby stroller of the present invention has a small number of rods and a simple structure, which effectively solves the problems of complex structure and high production cost of the reversing stroller; at the same time, on the baby stroller, the reversing operation of the push rod 3 and the unfolding and folding operations of the stroller frame are very convenient, and the volume of the stroller frame after folding is also very compact, which is convenient for users' daily use.

The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a baby's shallow, includes the shallow frame that has the expansion state, locates the wheel subassembly of shallow frame bottom, and be used for with the locking mechanical system of shallow frame lock under the expansion state, the shallow frame is including locating two side brackets of left and right sides, its characterized in that: the side brackets at each side comprise a front supporting rod, a rear supporting rod and a push rod, wherein the front supporting rod, the rear supporting rod and the push rod extend in the vertical direction respectively, the upper part of the rear supporting rod is rotationally connected to the front supporting rod through a first shaft, the upper part of the front supporting rod is rotationally connected with the lower part of the push rod through a second shaft, the front supporting rod comprises a rod body extending in the vertical direction and a connecting end head fixedly arranged at the upper end of the rod body, the upper part of the rear supporting rod is rotationally connected with one end of the connecting end head around the first shaft, the lower part of the push rod is rotationally connected with the other end of the connecting end head around the second shaft, the axial leads of the first shaft and the second shaft are mutually parallel, the first shaft and the second shaft are respectively arranged at the front side and the rear side of the rod body,

The side brackets on each side also comprise a connecting component arranged between the front supporting rod and the rear supporting rod, a sliding piece arranged on the front supporting rod in a vertical sliding way, an upper connecting rod with one end pivoted on the push rod and the other end pivoted on the sliding piece,

When the trolley frame is in a unfolding state, the push rod is provided with a forward pushing working position extending from front to back and a reverse pushing working position extending from back to front, the locking mechanism comprises a locking joint arranged between the front support rod and the push rod and used for locking the front support rod and the push rod, and the locking joint locks the push rod in the forward pushing working position and the reverse pushing working position; when the trolley frame is in a folded state, the front supporting rod and the rear supporting rod are folded in the front-rear direction, and the push rod is turned over and folded at the front side of the rod body.

2. The stroller of claim 1, wherein: the link assembly includes a lower link extending in a front-to-rear direction, a rear portion of the lower link being pivotally connected to the rear strut, and a front portion of the lower link being pivotally connected to the slider.

3. The stroller of claim 2, wherein: the lower part of the upper connecting rod is connected to the sliding piece through a third shaft pivot, the front part of the lower connecting rod is connected to the sliding piece through a fourth shaft pivot, and the axial lead of the third shaft is parallel to the axial lead of the fourth shaft.

4. The stroller of claim 2, wherein: the lower part of the upper connecting rod is connected to the sliding piece through a third shaft pivot, the front part of the lower connecting rod is connected to the sliding piece through a fourth shaft pivot, and the axial lead of the third shaft and the axial lead of the fourth shaft extend in a collinear manner.

5. The stroller of claim 2, wherein: the front support rod, the rear support rod, the lower connecting rod and the sliding piece form a crank block mechanism, and the front support rod, the push rod, the upper connecting rod and the sliding piece form another crank block mechanism.

6. The stroller of claim 2, wherein: the upper connecting rod and the lower connecting rod on the two sides are positioned between the front supporting rod, the rear supporting rod and the push rod on the two sides along the left-right direction.

7. The stroller of claim 1, wherein: when the push rod is in the forward pushing working position, the front support rod and the upper connecting rod extend along the same length direction; when the push rod is in the reverse pushing working position, the upper connecting rod is positioned at the front side of the second shaft.

8. The stroller of claim 1, wherein: the side brackets on each side further comprise push handles, the lower parts of the push handles are pivotally connected to the upper parts of the push rods, push handle locking pieces are arranged between the push rods and the push handles, and the push handles are in linkage unlocking with the locking joints when turned over relative to the push rods.