CN110271598B - Child cart - Google Patents

Abstract

The invention discloses a child stroller, which comprises a frame, wherein the frame comprises two side brackets which are respectively arranged at the left side and the right side, and the side brackets comprise: a front strut extending obliquely from front to back and upward in a deployed state of the frame; the rear supporting rod extends obliquely from back to front and upwards in the unfolded state of the frame, and the upper part of the front supporting rod is rotationally connected with the upper part of the rear supporting rod through a first shaft; the lower part of the push rod is rotationally connected with the rear supporting rod through a second shaft; the seat rod extends along the front-rear direction in the unfolded state of the frame, the front part of the seat rod is rotationally connected with the front supporting rod through a third shaft, and the rear part of the seat rod is rotationally connected with the lower part of the push rod through a fourth shaft; in the unfolded state of the frame, the second shaft is located above the fourth shaft. The child stroller is simple to operate, convenient to fold, compact in structure after being folded and easy to carry and store.

Description

A child stroller

Technical Field

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

Background technique

A child stroller in the prior art includes a stroller frame having an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly disposed at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state. There are many types of existing child strollers, and the number of stroller frame rods is different, and the connection positions between the rods are different, so the folding principles and folding methods are different, and the effects after folding are also different.

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.

To achieve the above object, the technical solution adopted by the present invention is:

The foldable stroller according to claim 1, wherein the front wheel assembly is arranged at the front of the bottom of the frame and the rear wheel assembly is arranged at the rear of the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state. The frame comprises two side brackets arranged at left and right sides, and the side brackets on each side comprise: a front support rod, wherein the front support rod extends from front to rear and obliquely upward in the unfolded state of the frame; a rear support rod, wherein the rear support rod extends from rear to front and obliquely upward in the unfolded state of the frame, and the upper part of the front support rod and the upper part of the rear support rod are rotatably connected by a first shaft; a push rod, wherein the lower part of the push rod is rotatably connected to the rear support rod by a second shaft; a seat rod, wherein the seat rod extends in a front-to-back direction in the unfolded state of the frame, the front part of the seat rod is rotatably connected to the front support rod by a third shaft, and the rear part of the seat rod is rotatably connected to the lower part of the push rod by a fourth shaft; and the second shaft is located above the fourth shaft in the unfolded state of the frame.

Furthermore, when the frame is in a folded state, the push rod is retracted behind the rear support rod, the front support rod, the rear support rod and the seat rod are close to each other, and the fourth axis is located above the second axis.

Furthermore, the rear support rod includes a main rod extending obliquely in the up-down direction and a connecting rod fixedly arranged on the upper part of the main rod, and the connecting rod is rotatably connected to the front support rod through the first shaft.

Furthermore, when the vehicle frame is in an unfolded state, the front support rod and the connecting rod are connected along a length direction and extend along the same length direction.

Further, the locking mechanism comprises an expansion locking mechanism arranged at the rotation connection between the push rod and the seat rod.

Furthermore, the front wheel assembly is provided at the lower portion of the front support rod on each side, and the rear wheel assembly is provided at the lower portion of the rear support rod on each side. When the frame is in the folded state, the two groups of rear wheel assemblies are retracted between the two groups of front wheel assemblies in the left-right direction.

Furthermore, the side bracket on each side also includes a reversing push handle, the lower part of the reversing push handle on each side is rotatably connected to the push rod on the same side through a fifth axis, and the child stroller has a forward use state and a rearward use state. In the forward use state, the reversing push handle extends from front to rear and tilted upward, and the upper end of the reversing push handle is located behind the seat rod; in the rearward use state, the reversing push handle extends from rear to front and tilted upward, and the upper end of the reversing push handle is located in front of the seat rod. The frame is also provided with a reversing locking member for locking the reversing push handle in the forward use state or the rearward use state.

Furthermore, the reversing locking member is arranged on the reversing push handle, and in the forward use state, the reversing locking member and the push rod are mutually locked; in the backward use state, the reversing locking member and the front support rod are mutually locked.

Furthermore, the axis lines of the fourth axis coincide with the axis center lines of the fifth axis or the fourth axis is coaxial with the fifth axis.

Furthermore, the reversing push handle includes an upper reversing push handle and a lower reversing push handle, and the upper reversing push handle and the lower reversing push handle are rotationally connected via a sixth axis. When the frame is in the folded state, the rotation connection between the upper reversing push handle and the lower reversing push handle and the rear wheel assembly form support for the frame.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the child stroller of the present invention is easy to fold and unfold, and has a compact structure after folding, is highly practical, and is convenient for consumers to use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of the child stroller of the present invention with the frame unfolded (Example 1);

FIG2 is a side view of the child stroller of the present invention with the frame unfolded (Example 1);

FIG3 is a perspective view of the child stroller of the present invention when the frame is folded (Example 1);

FIG4 is a side view of the child stroller of the present invention when the frame is folded (Example 1);

FIG5 is a perspective view of the child stroller of the present invention in a forward-facing state (Example 2);

FIG. 6 is a side view of the child stroller of the present invention in a forward-facing use state (Example 2);

FIG. 7 is a perspective view of the child stroller of the present invention in a rearward-facing use state (Example 2);

FIG8 is a side view of the stroller of the present invention in a rearward-facing state (Example 2);

FIG9 is a perspective view of the child stroller of the present invention during folding (Example 2);

FIG. 10 is a side view of the child stroller of the present invention during folding (Example 2);

FIG11 is a perspective view of the child stroller of the present invention in a folded state (Example 2);

FIG12 is a side view of the child stroller of the present invention when the frame is folded (Example 2);

The numbers in the figure are:

1. Front wheel assembly; 2. Rear wheel assembly; 3. Deployment locking mechanism; 4. Front support rod; 5. Rear support rod; 5a. Connecting rod; 5b. Main rod; 6. Push rod; 7. Seat rod; 8. Reversing push handle; 8a. Upper reversing push handle; 8b. Lower reversing push handle; 9a. First axis; 9b. Second axis; 9c. Third axis; 9d. Fourth axis; 9e. Fifth axis; 9f. Sixth axis.

Detailed ways

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

Example 1

As shown in FIGS. 1 to 4 , the stroller of the present embodiment includes a frame having an unfolded state and a folded state, a front wheel assembly 1 provided at the front bottom of the frame, a rear wheel assembly 2 provided at the rear bottom of the frame, and an unfolding locking mechanism 3 for locking the frame in the unfolded state.

Specifically, the frame includes two side brackets arranged on the left and right sides, and the side brackets on each side include: a front support rod 4, which extends from the front to the rear and tilted upward when the frame is in the unfolded state; a rear support rod 5, which extends from the rear to the front and tilted upward when the frame is in the unfolded state. Specifically, the rear support rod 5 includes a main rod 5b extending obliquely in the up-down direction and a connecting rod 5a fixedly arranged on the upper part of the main rod 5b, and the connecting rod 5a is rotatably connected to the upper part of the front support rod 4 through a first shaft 9a. When the frame is in the unfolded state, the front support rod 4 and the connecting rod 5a are connected along the length direction and extend along the same length direction. Specifically, the front support rod 4 and the connecting rod 5a are set as arc-shaped rods to make the cart more beautiful; the push rod 6, the lower part of the push rod 6 is rotatably connected with the rear support rod 5 through the second axis 9b; the seat rod 7, when the frame is in the unfolded state, the seat rod 7 extends along the front and rear directions, the front part of the seat rod 7 is rotatably connected with the front support rod 4 through the third axis 9c, and the rear part of the seat rod 7 is rotatably connected with the lower part of the push rod 6 through the fourth axis 9d; when the frame is in the unfolded state, the second axis 9b is located above the fourth axis 9d.

Specifically, in this embodiment, the lower part of the front support rod 4 on each side is provided with a front wheel assembly 1, and the lower part of the rear support rod 5 on each side is provided with a rear wheel assembly 2. Of course, one set of front wheel assemblies 1 can also be provided at the front part of the bottom of the frame, and two sets of rear wheel assemblies 2 can be provided at the rear part of the bottom of the frame.

Specifically, the locking mechanism in this embodiment includes an unfolding locking mechanism 3 arranged at the rotational connection between the push rod 6 and the seat rod 7. When the unfolding locking mechanism 3 is locked, the front support rod 4, the rear support rod 5, the seat rod 7 and the push rod 6 are all locked, so that the side brackets on both sides are locked in the unfolded state. Of course, the unfolding locking mechanism 3 can also be arranged at the rotational connection between the front support rod 4 and the rear support rod 5, or at the rotational connection between the front support rod 4 and the seat rod 7, or at the rotational connection between the push rod 6 and the rear support rod 5.

When the frame is folded from the unfolded state, after the side brackets on both sides are unlocked, the push rod 6 is pressed to rotate it clockwise around the fourth axis 9d, and the lower part of the push rod 6 drives the rear part of the seat rod 7 to move upward, and the front part of the seat rod 7 drives the front support rod 4 to rotate and approach the rear support rod 5, so that the front support rod 4, the rear support rod 5, and the seat rod 7 rotate and approach each other, and finally the frame is folded as shown in Figures 3 and 4. At this time, the fourth axis 9d is located above the second axis 9b, the push rod 6 is folded behind the rear support rod 5, the seat rod 7 is located between the front support rod 4 and the rear support rod 5, and the two groups of rear wheel assemblies 2 are folded between the two groups of front wheel assemblies 1 in the left and right directions. Moreover, compared with the method of directly rotating and connecting the front support rod 4 and the main rod 5b, the setting of the connecting rod 5a further shortens the overall height of the frame in the folded state, which is more convenient for transportation and storage.

Example 2

As shown in Figures 4 to 12, in this embodiment, on the basis of Example 1, a reversing push handle 8 is added to the side bracket on each side, and the lower part of the reversing push handle 8 on each side is rotatably connected to the push rod 6 on the same side through the fifth shaft 9e. Here, the axis center lines of the fourth shaft 9d and the fifth shaft 9e coincide with each other or the fourth shaft 9d and the fifth shaft 9e are coaxial. The child stroller has a forward use state and a rearward use state. As shown in Figures 5 to 6, in the forward use state, the reversing push handle 8 extends from front to rear and upwardly inclined, and the upper end of the reversing push handle 8 is located behind the seat rod 7; as shown in Figures 7 to 8, in the rearward use state, the reversing push handle 8 extends from rear to front and upwardly inclined, and the upper end of the reversing push handle 8 is located in front of the seat rod 7. The frame is also provided with a reversing locking member (not shown in the figure) for locking the reversing push handle 8 in the forward use state or the rearward use state.

Specifically, the reversing locking member is arranged on the reversing push handle 8. In the forward use state, the reversing locking member and the push rod 6 are mutually locked; in the backward use state, the reversing locking member and the front support rod 4 are mutually locked.

Specifically, the reversing push handle 8 includes an upper reversing push handle 8a and a lower reversing push handle 8b, and the upper reversing push handle 8a and the lower reversing push handle 8b are rotatably connected via a sixth shaft 9f, wherein a push handle locking mechanism is arranged at the sixth shaft 9f. Preferably, an unlocking operating member is arranged on the push handle locking mechanism, and a linkage unlocking mechanism is also arranged between the push handle locking mechanism and the unfolding locking mechanism 3. The linkage unlocking mechanism can specifically adopt a traction rope, and the push handle locking mechanism can be unlocked by operating the unlocking operating member, and the unfolding locking mechanism 3 can be unlocked through the linkage unlocking mechanism between the two, thereby realizing the unlocking of the side brackets on both sides.

When the frame is folded from the unfolded state, the stroller is first converted to a forward-facing state. After the side brackets on both sides are unlocked, the upper reversing push handle 8a is flipped upward counterclockwise around the sixth axis 9f, and then the lower reversing push handle 8b is pressed downward to rotate it clockwise around the fifth axis 9e, driving the push rod 6 to rotate downward clockwise. In the folded state of the frame, the rotation connection between the upper reversing push handle 8a and the lower reversing push handle 8b and the rear wheel assembly 2 form a support for the frame, so that the frame can be self-standing after being folded.

Through the application of the technical solutions of the above embodiments, the child stroller of the present invention has a small number of rods, a simple structure, is easy to fold, and is highly practical. By setting the reversing handle 8, the stroller has a forward use state and a backward use state, enriching the user's usage options.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

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 stroller for children, comprising a frame having an unfolded state and a folded state, a front wheel assembly provided at the front bottom of the frame and a rear wheel assembly provided at the rear bottom of the frame, and a locking mechanism for locking the frame in the unfolded state, wherein the frame comprises two side brackets provided at left and right sides, and wherein each side bracket comprises: A front support rod, wherein the front support rod extends from front to rear and obliquely upwards when the frame is in an unfolded state; A rear support rod, wherein the rear support rod extends obliquely from the rear to the front and upward when the frame is in an unfolded state, and the upper portion of the front support rod and the upper portion of the rear support rod are rotatably connected via a first shaft; A push rod, the lower portion of which is rotatably connected to the rear support rod via a second shaft; A seat post, wherein the seat post extends in the front-to-back direction when the frame is in the unfolded state, the front portion of the seat post is rotationally connected to the front support rod via a third axis, and the rear portion of the seat post is rotationally connected to the lower portion of the push rod via a fourth axis; In the unfolded state of the frame, the second shaft is located above the fourth shaft; The side bracket on each side also includes a reversing push handle, the lower part of the reversing push handle on each side is rotatably connected to the push rod on the same side through a fifth axis, the reversing push handle includes an upper reversing push handle and a lower reversing push handle, the upper reversing push handle and the lower reversing push handle are rotatably connected through a sixth axis, when the frame is in a folded state, the rotation connection between the upper reversing push handle and the lower reversing push handle and the rear wheel assembly form a support for the frame, the fifth axis is located in front of the rear support rod, and the rotation connection between the upper reversing push handle and the lower reversing push handle is located behind the rear support rod. 2. The stroller according to claim 1 is characterized in that: when the frame is in the folded state, the push rod is retracted behind the rear support rod, the front support rod, the rear support rod and the seat rod are close to each other, and the fourth axis is located above the second axis. 3. The stroller according to claim 2, characterized in that: the rear support rod comprises a main rod extending obliquely in the up-down direction and a connecting rod fixedly arranged on the upper part of the main rod, and the connecting rod is rotatably connected to the front support rod through the first shaft. 4. The stroller according to claim 3, characterized in that: when the frame is in the unfolded state, the front support rod and the connecting rod are connected along the length direction and extend along the same length direction. 5. The stroller according to claim 1, wherein the locking mechanism comprises an unfolding locking mechanism provided at a rotational connection between the push rod and the seat rod. 6. The stroller according to claim 1 is characterized in that: the lower part of the front support rod on each side is provided with the front wheel assembly, and the lower part of the rear support rod on each side is provided with the rear wheel assembly, and when the frame is in a folded state, the two groups of the rear wheel assemblies are retracted between the two groups of the front wheel assemblies in the left-right direction. 7. A child stroller according to any one of claims 1 to 6, characterized in that: the child stroller has a forward use state and a rearward use state, in which in the forward use state, the reversing push handle extends from front to rear and obliquely upward, and the upper end of the reversing push handle is located behind the seat rod; in the rearward use state, the reversing push handle extends from rear to front and obliquely upward, and the upper end of the reversing push handle is located in front of the seat rod, and the frame is also provided with a reversing locking member for locking the reversing push handle in the forward use state or the rearward use state. 8. The stroller according to claim 7, characterized in that: the reversing locking member is arranged on the reversing push handle, and in the forward use state, the reversing locking member and the push rod are locked with each other; in the backward use state, the reversing locking member and the front support rod are locked with each other. 9. The stroller according to claim 7, characterized in that the axis lines of the fourth axis coincide with the axis center lines of the fifth axis or the fourth axis is coaxial with the fifth axis.