CN112061217B - Child cart - Google Patents

Abstract

The present invention discloses a child stroller, comprising a stroller frame, a front wheel assembly arranged at the bottom front part of the stroller frame, a rear wheel assembly arranged at the bottom rear part of the stroller frame, and a seat bag assembly arranged on the stroller frame. The stroller frame comprises a push rod and a sliding member arranged on the push rod and capable of sliding along the length extension direction of the push rod. The seat bag assembly is arranged on the sliding member. When the child stroller is converted from an unfolded state to a folded state, the push rod flips backward and downward, and the sliding member slides along the length extension direction of the push rod, driving the seat bag assembly to synchronously slide relative to the push rod with the sliding member and approach the push rod. The seat bag assembly of the child stroller can be synchronously folded with the stroller frame, so that the folding operation of the child stroller is convenient. Moreover, after being folded, the child stroller has a compact structure and a small volume, and is easy to carry and store.

Description

Strollers

Technical Field

The present invention relates to the technical field of children's products, and in particular to a children's stroller.

Background Art

Strollers provide great convenience for adults to carry small children for outdoor activities, so they have gradually become a necessity for adults to carry children for outdoor activities. In order to facilitate the carrying and storage of strollers, the stroller frames that make up strollers are generally foldable. There are many types of existing strollers, and the number of stroller frame rods is different, and the connection positions between the rods are different, so the folding principles, folding methods and folded effects are different; moreover, some strollers cannot be folded together with the seat bag assembly, which makes the folding operation of the stroller inconvenient.

Summary of the invention

The object of the present invention is to provide an improved baby stroller in view of the deficiencies in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is:

A child stroller has an unfolded state and a folded state, the child stroller comprising a stroller frame, a front wheel assembly arranged at a bottom front portion of the stroller frame, a rear wheel assembly arranged at a bottom rear portion of the stroller frame, and a seat bag assembly arranged on the stroller frame, the stroller frame comprising a push rod and a sliding member slidably arranged on the push rod along a length extension direction of the push rod, the seat bag assembly being arranged on the sliding member, and when the child stroller is converted from the unfolded state to the folded state, the push rod flips backward and downward, the sliding member slides along the length extension direction of the push rod, and drives the seat bag assembly to synchronously slide relative to the push rod with the sliding member and move closer to the push rod.

Preferably, the cart frame also includes a front bracket for mounting the front wheel assembly, a rear bracket for mounting the rear wheel assembly, a vertical rod and a connecting rod, two of the three components, namely, the upper portion of the front bracket, the upper portion of the rear bracket and the lower portion of the push rod, are rotatably connected, the third component is rotatably connected to any one of the two aforementioned components, or the three aforementioned components are rotatably connected on the same axis, the sliding member can be slidably arranged on the push rod along the length extension direction of the push rod, one end of the connecting rod is rotatably connected to the front bracket, and the vertical rod is rotatably connected to the sliding member, the rear bracket and the other end of the connecting rod respectively.

Furthermore, when the stroller is in the unfolded state, the upper end of the upright is rotatably connected to the sliding member, the lower end of the upright is rotatably connected to the rear bracket, and the rotational connection between the upright and the connecting rod is located between the rotational connection between the upright and the sliding member and the rotational connection between the upright and the rear bracket.

Furthermore, the seat pocket assembly includes a lower frame and an upper frame, the upper portion of the lower frame is rotatably connected to the lower portion of the upper frame, and when the stroller is in a folded state, the front bracket, the rear bracket, the push rod and the upper frame are arranged in sequence from front to back.

Preferably, when the stroller is in an unfolded state, the sliding member is located at the lower portion of the push rod, and the push rod has an upper portion arranged opposite to the lower portion, and when the stroller is folded, the sliding member slides from the lower portion to the upper portion along the length extension direction of the push rod.

Furthermore, the push rod includes a push rod support and a push rod support fixedly arranged at the lower part of the push rod support, and the sliding member can be slidably arranged on the push rod support along the length extension direction of the push rod support. When the child stroller is in the unfolded state, the lower part of the sliding member cooperates with the push rod support, and when the child stroller is in the folded state, the cooperation between the sliding member and the push rod support is disengaged.

Preferably, when the child stroller is in a folded state, the height of the seat assembly on the stroller frame is not higher than the highest point of the stroller frame.

Preferably, the seat pocket assembly comprises a lower surrounding frame and an upper surrounding frame, the upper portion of the lower surrounding frame is rotatably connected to the lower portion of the upper surrounding frame, and the upper surrounding frame is connected to the sliding member.

Furthermore, when the stroller is in an unfolded state, the upper frame and the lower frame extend in the same straight line direction, and both extend obliquely upward from front to rear; when the stroller is in a folded state, the lower frame extends in the front-to-back direction, and the upper frame extends obliquely downward from front to rear, forming an angle of less than 180 degrees between the upper frame and the lower frame that is set toward the stroller frame.

Preferably, the seat pocket assembly is detachably connected to the sliding member.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the stroller of the present invention has a simple structure. When the push rod is turned backward and downward during the folding process of the stroller, the sliding member can be driven to slide along the length extension direction of the push rod, thereby driving the seat bag assembly to synchronously slide relative to the push rod with the sliding member and move closer to the push rod, that is, the seat bag assembly can be synchronously folded with the stroller frame, thereby making the folding and unfolding operation of the stroller convenient and convenient for the use of the stroller. Moreover, the stroller has a compact structure and a small volume after being folded, and is easy to carry and store.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG2 is a side view of the baby stroller of the present invention in the unfolded state;

FIG3 is a side view of the baby stroller of the present invention during folding;

FIG4 is a side view of the baby stroller of the present invention in a folded state;

FIG5 is a top view of the baby stroller of the present invention in a folded state.

DETAILED DESCRIPTION

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

As shown in FIGS. 1 to 5 , the child stroller of the present invention comprises a stroller frame 1, a front wheel assembly 40 arranged at the bottom front portion of the stroller frame 1, a rear wheel assembly 50 arranged at the bottom rear portion of the stroller frame 1, and a seat assembly 2 arranged on the stroller frame 1.

The cart frame 1 includes a front bracket 11 , a rear bracket 12 , a push rod 13 , a sliding member 14 , a vertical rod 15 and a connecting rod 16 .

The front wheel assembly 40 is disposed at the lower portion of the front bracket 11. The rear wheel assembly 50 is disposed at the lower portion of the rear bracket 12. Two of the three components, namely, the upper portion of the front bracket 11, the upper portion of the rear bracket 12 and the lower portion of the push rod 13, are rotatably connected, the third component is rotatably connected to any one of the two components, or the three components are rotatably connected coaxially. The sliding member 14 can be slidably disposed on the push rod 13 along the length extension direction of the push rod 13. One end of the connecting rod 16 is rotatably connected to the front bracket 11. The vertical rod 15 is rotatably connected to the sliding member 14, the rear bracket 12 and the other end of the connecting rod 16, respectively.

Specifically, on each side of the left and right sides of the cart frame 1, the front bracket 11 includes a front support rod 111 and a front support 112 fixedly arranged at the upper end of the front support rod 111, the rear bracket 12 includes a rear support rod 121 and a rear support 122 fixedly arranged at the upper end of the rear support rod 121, the push rod 13 includes a push rod support rod 131 and a push rod support 132 fixedly arranged at the lower end of the push rod support rod 131, and the outer contour surfaces of the three components, the front support 112, the rear support 122 and the push rod support 132, are all arc-shaped structures.

The front wheel assembly 40 is arranged at the lower part of the front support rod 111, the rear wheel assembly 50 is arranged at the lower part of the rear support rod 121, the front support 112, the rear support 122 and the push rod support 132 are connected to rotate with the same axis through the first shaft 31, one end of the connecting rod 16 is connected to the front support rod 111 through the second shaft 32, the upper end of the vertical rod 15 is connected to the sliding member 14 through the third shaft 33, the lower end of the vertical rod 15 is connected to the rear support rod 121 through the fourth shaft 34, the vertical rod 15 and the other end of the connecting rod 16 are connected to rotate through the fifth shaft 35, and the sliding member 14 can be slidably arranged on the push rod support rod 131 along the length extension direction of the push rod support rod 131. In this way, a crank slider mechanism is formed between the rear support 12, the push rod 13, the sliding member 14 and the vertical rod 15.

In this embodiment, the sliding member 14 includes a sliding sleeve 141 sleeved on the outside of the push rod support rod 131 and a connecting portion 142 fixedly arranged at the rear of the sliding sleeve 141. The upper end of the vertical rod 15 is rotatably connected to the connecting portion 142 via the third shaft 33. The lower portion of the sliding sleeve 141 is an arc-shaped structure matching the outer contour surface of the push rod support 132. The sliding member 14 can slide relative to the push rod support rod 131 so that the lower portion of the sliding sleeve 141 is matched or disengaged from the push rod support 132. A locking device (not shown in the figure) is also provided between the sliding member 14 and the push rod support rod 131, which is used to lock the relative position of the sliding member 14 and the push rod 131 when the child stroller is in the unfolded state.

The seat pocket assembly 2 includes a lower frame 21 and an upper frame 22. The upper portion of the lower frame 21 is rotatably connected to the lower portion of the upper frame 22. The upper frame 22 is arranged on the sliding member 14. In this way, when the sliding member 14 slides relative to the push rod 13, the seat pocket assembly 2 can be driven to slide synchronously with the sliding member 14 relative to the push rod 13.

In this embodiment, a specific structure of a cart frame 1 is provided. Of course, the cart frame 1 is not limited to the above structure. As long as the cart frame 1 includes the above-mentioned push rod 13 and sliding member 14, and the seat bag assembly 2 is arranged on the sliding member 14, when the sliding member 14 slides relative to the push rod 13, the seat bag assembly 2 can be driven to slide synchronously with the sliding member 14 relative to the push rod 13.

Taking the stroller frame 1 in this embodiment as an example, when the stroller is in the unfolded state, the front support rod 111 and the push rod support rod 131 extend in the same straight line direction, both extending obliquely upward from front to rear, the rear support rod 121 extending obliquely downward from front to rear, the vertical rod 15 extends in the up-down direction, and the connecting rod 16 extends in the front-to-back direction; on the front bracket 11, the second axis 32 is located at the front and lower part of the first axis 31; on the rear bracket 12, the fourth axis 34 is located at the rear and lower part of the first axis 31; the third axis 33 is located at the rear and upper part of the first axis 31; on the vertical rod 15, the third axis 33, the fifth axis 35 and the fourth axis 34 are arranged in sequence from top to bottom, that is, the fifth axis 35 is located in the area between the push rod 13 and the rear bracket 12; the sliding member 14 is located at the lower end of the push rod support rod 131 on the push rod support rod 131, and the lower part of the sliding member 14 cooperates with the push rod support 132, and the push rod support rod 131 has an upper end arranged opposite to the lower end. The lower frame 21 and the upper frame 22 extend in the same straight line direction, and both extend obliquely upward from front to rear, and the straight line where the lower frame 21 and the upper frame 22 are located is approximately parallel to the straight line where the front support rod 111 and the push rod support rod 131 are located. As shown in Figures 1 and 2.

When the stroller is folded, the push rod 13 is pressed backward and downward, and the push rod 13 rotates backward and downward around the first axis 31 to get closer to the rear bracket 12. The slider crank mechanism formed between the rear bracket 12, the push rod 13, the slide 14 and the vertical rod 15 drives the slide 14 to slide from the lower end to the upper end along the push rod support rod 131, and the cooperation between the lower part of the slide 14 and the push rod support 132 is disengaged. The slide of the slide 14 causes the vertical rod 15 to rotate, and the front bracket 11 is pulled by the connecting rod 16 to rotate backward around the first axis 31 and get closer to the rear bracket 12; the slide 14 is relative to the push rod support rod. During the sliding process of 131, the seat pocket assembly 2 can also be driven to synchronously slide relative to the push rod support rod 131 and move closer to the rear bracket 12, that is, the seat pocket assembly 2 can be synchronously folded with the stroller frame 1, and the folding process is shown in Figure 3; until the various rods that constitute the stroller frame 1 are closely brought together, the stroller frame 1 is folded; the lower frame 21 is turned forward to be approximately horizontal, and an angle set toward the stroller frame 1 is formed between it and the upper frame 22, and the angle is less than 180 degrees. The seat pocket assembly 2 is also folded, and the entire child stroller is folded. The final folding is shown in Figures 4 and 5.

When the stroller is in the folded state, the front support 11, the rear support 12, the push rod 13 and the upper frame 22 are arranged in sequence from front to back and are closely together, and the push rod support rod 131 and the upper frame 22 are still in a state of being approximately parallel. The lower frame 21 extends in the front-to-back direction, and the height of the entire seat pocket assembly 2 on the stroller frame 1 is not higher than the highest point of the stroller frame 1. In this embodiment, when the stroller is in the folded state, the rear support 122 of the rear support 12 is at the highest position, and the lower frame 21 is located below the top of the rear support 122. After the entire stroller is folded, the structure is compact and the volume is small, which is easy to carry and store.

Preferably, the upper frame 22 is detachably arranged on the sliding member 14, so that when the child stroller is not used for a long time, the seat bag assembly 2 can be removed from the stroller frame 1, and packed and stored separately. Moreover, after the seat bag assembly 2 is damaged, a new seat bag assembly 2 can be replaced without replacing the stroller frame 1, which can reduce costs.

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 (9)

1. A child stroller having an expanded and collapsed configuration, the child stroller comprising a stroller frame, a front wheel assembly disposed at a bottom front portion of the stroller frame, a rear wheel assembly disposed at a bottom rear portion of the stroller frame, and a seat pocket assembly disposed on the stroller frame, characterized in that: the trolley frame comprises a push rod and a sliding piece which can be arranged on the push rod in a sliding manner along the length extending direction of the push rod, the seat pocket assembly is arranged on the sliding piece, when the trolley is switched from an unfolding state to a folding state, the push rod turns backwards and downwards, the sliding piece slides along the length extending direction of the push rod, and the seat pocket assembly is driven to synchronously slide along with the sliding piece relative to the push rod and be close to the push rod;

the cart frame also comprises a front support used for installing the front wheel assembly, a rear support used for installing the rear wheel assembly, a vertical rod and a connecting rod, wherein two parts of the upper part of the front support, the upper part of the rear support and the lower part of the push rod are rotationally connected, the third part is rotationally connected with any one of the two parts, or the three parts are rotationally connected with the same shaft, the sliding part can be slidably arranged on the push rod along the length extending direction of the push rod, one end part of the connecting rod is rotationally connected with the front support, and the vertical rod is rotationally connected with the sliding part, the rear support and the other end part of the connecting rod respectively.

2. The stroller of claim 1, wherein: when the child stroller is in the unfolded state, the upper end part of the upright rod is rotationally connected with the sliding part, the lower end part of the upright rod is rotationally connected with the rear support, and the rotational connection part of the upright rod and the connecting rod is positioned between the rotational connection part of the upright rod and the sliding part and the rotational connection part of the upright rod and the rear support.

3. The stroller of claim 1, wherein: the seat pocket assembly comprises a lower enclosing frame and an upper enclosing frame, the upper portion of the lower enclosing frame is connected with the lower portion of the upper enclosing frame in a rotating mode, and when the child stroller is in a folded state, the front support, the rear support, the push rod and the upper enclosing frame are sequentially arranged from front to back.

4. The stroller of claim 1, wherein: when the child stroller is in the unfolded state, the sliding piece is located at the lower portion of the push rod, the push rod is provided with an upper portion which is opposite to the lower portion, and when the child stroller is folded, the sliding piece slides from the lower portion to the upper portion along the length extending direction of the push rod.

5. The stroller of claim 4, wherein: the push rod comprises a push rod supporting rod and a push rod support seat fixedly arranged at the lower part of the push rod supporting rod, the sliding piece can be arranged on the push rod supporting rod in a sliding manner along the length extending direction of the push rod supporting rod, when the child stroller is in an unfolding state, the lower part of the sliding piece is matched with the push rod support seat, and when the child stroller is in a folding state, the sliding piece is matched with the push rod support seat to be separated.

6. The stroller of claim 1, wherein: when the child stroller is in a folded state, the seat pocket assembly is not higher than the highest position of the stroller frame.

7. The stroller of claim 1, wherein: the seat pocket assembly comprises a lower enclosing frame and an upper enclosing frame, wherein the upper part of the lower enclosing frame is rotationally connected with the lower part of the upper enclosing frame, and the upper enclosing frame is connected with the sliding piece.

8. The stroller of claim 7, wherein: when the child stroller is in a unfolded state, the upper surrounding frame and the lower surrounding frame extend along the same straight line direction and extend obliquely upwards from front to back, when the child stroller is in a folded state, the lower surrounding frame extends along the front and back direction, the upper surrounding frame extends obliquely downwards from front to back, an included angle which is arranged towards the stroller frame is formed between the upper surrounding frame and the lower surrounding frame, and the included angle is smaller than 180 degrees.

9. The stroller of claim 1, wherein: the seat pocket assembly is detachably connected with the sliding piece.