Stroller

Abstract

The present application relates to a kind of child stroller, its frame includes front support, rear support, side pole frame, push rod frame, rear support frame and bottom support frame, wherein, the upper portion of the front support, the upper portion of the rear support and the lower portion of the side pole frame are rotatably connected with each other, the rear portion of the bottom support frame is rotatably connected on the rear support, the front portion of the bottom support frame can be both relatively rotatable and slidably arranged on the front support along the length extension direction of the front support;The upper portion of the side pole frame is rotatably connected on the push rod frame, the rear support frame is rotatably connected with the rear support, the upper portion of the rear support frame is rotatably connected with the lower portion of the push rod frame, the lower portion of the rear support frame can be both relatively rotatable and relatively slidably arranged on the bottom support frame along the length extension direction of the bottom support frame.The frame is simple in structure in unfolded state, and folding operation is simple and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of children's products, in particular to a children's stroller. BACKGROUND

[0002] The structures of the existing children's strollers are various, the number of rod members and the connection relationship are different, and the corresponding folding principle, the shape after folding and the size after folding are also different. How to make the structure of the stroller as simple as possible, the folding operation more convenient and the volume after folding as small as possible under the premise of ensuring good stability and normal use performance of the stroller has been the goal that the technical personnel in the field continuously pursue. SUMMARY

[0003] The purpose of the present application is to provide a children's stroller with a new folding principle.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a children's stroller, comprising a stroller frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the stroller frame, the stroller frame comprising a front support, a rear support, a side rod support, a push rod support, a rear support frame and a bottom support frame, wherein the front support, the side rod support, the push rod support and the rear support frame each extend rearwardly and upwardly from bottom to top when the stroller frame is in the unfolded state, the rear support extends forwardly and upwardly from bottom to top, the front wheel assembly is arranged at the lower part of the front support, the rear wheel assembly is arranged at the lower part of the rear support, two of the upper part of the front support, the upper part of the rear support and the lower part of the side rod support are rotationally connected, and the third one is rotationally connected with one of the two, or the three are rotationally connected around the same rotation center line,

[0005] the bottom support frame extends in the front-rear direction, the rear part of the bottom support frame is rotationally connected to the rear support, and the front part of the bottom support frame is arranged on the front support in a manner that it can rotate relative to the front support and slide along the length extension direction of the front support; the upper part of the side rod support is rotationally connected to the push rod support, the rear support is rotationally connected to the rear support, the upper part of the rear support is rotationally connected to the lower part of the push rod support, and the lower part of the rear support is arranged on the bottom support frame in a manner that it can rotate relative to the bottom support frame and slide along the length extension direction of the bottom support frame.

[0006] In some embodiments, the front part of the bottom support frame is rotationally connected with a first sliding member, the first sliding member is arranged on the front support in a manner that it can slide along the length extension direction of the front support; the lower part of the rear support is rotationally connected with a second sliding member, and the second sliding member is arranged on the bottom support frame in a manner that it can slide relative to the bottom support frame along the length extension direction of the bottom support frame.

[0007] In some embodiments, during the process of transforming the frame from the unfolded state to the folded state, the first sliding member slides upward along the front support, and the second sliding member slides forward along the bottom support; and in the folded state, the front support, the bottom support, the rear support, the side rod support and the push rod support are sequentially folded from front to back.

[0008] In some embodiments, the front support is provided with a first limiting member, and the bottom support is provided with a second limiting member; in the unfolded state, the first sliding member abuts against the first limiting member downward, and the second sliding member abuts against the second limiting member rearward.

[0009] In some embodiments, the upper portion of the front support is rotatably connected with the upper portion of the rear support about a first axis, and the upper portion of the rear support is rotatably connected with the lower portion of the side rod support about a second axis, the first axis and the second axis being parallel to each other.

[0010] In some embodiments, the frame further comprises a seat support extending in the front-rear direction in the unfolded state, the rear portion of the seat support being rotatably connected with the rear support, and the front portion of the seat support being rotatably connected with a third sliding member, the third sliding member being slidably arranged on the side rod support along the length direction of the side rod support.

[0011] In some embodiments, the front support comprises two front support rods respectively arranged on the left and right sides and extending in the up-down direction, the rear support comprises two rear support rods respectively arranged on the left and right sides and extending in the up-down direction, the side rod support comprises two side rods respectively arranged on the left and right sides and extending in the up-down direction, the push rod support comprises two push rods respectively arranged on the left and right sides and extending in the up-down direction, the rear support comprises two rear support rods respectively arranged on the left and right sides and extending in the up-down direction, and the bottom support comprises two bottom support rods respectively arranged on the left and right sides and extending in the up-down direction.

[0012] On each of the left and right sides of the frame, the upper portion of the front support rod, the lower portion of the side rod and the upper portion of the rear support rod are rotatably connected with each other, the upper portion of the side rod is rotatably connected with the push rod, the rear portion of the bottom support rod is rotatably connected with the rear support rod, the front portion of the bottom support rod is both rotatably and slidably arranged on the front support rod, the rear support rod and the rear support rod cross each other and are rotatably connected at the crossing, the upper portion of the rear support rod is rotatably connected with the lower portion of the push rod, and the lower portion of the rear support rod is both rotatably and slidably arranged on the bottom support rod.

[0013] In some embodiments, a first sliding member is rotatably connected to the front part of the bottom support rod, and the first sliding member is slidably disposed on the front support rod along the length extension direction of the front support rod; a second sliding member is rotatably connected to the lower part of the rear support rod, and the second sliding member is slidably disposed on the bottom support rod along the length extension direction of the bottom support rod.

[0014] In some embodiments, the rear support rod includes a main body rod extending in a vertical direction and a connecting rod fixed to the upper part of the main body rod. The upper part of the front support rod is rotatably connected to one end of the connecting rod, and the lower part of the side rod is rotatably connected to the other end of the connecting rod. When the frame is in the unfolded state, the front support rod, connecting rod, and side rod on the same side extend in the same length direction. When the frame is in the folded state, the front support rod and the bottom support rod are retracted to the front side of the main body rod, and the side rod and the push rod are retracted to the rear side of the main body rod.

[0015] In some embodiments, the front wheel assembly has two sets disposed on the left and right sides of the bottom of the front support, and the rear wheel assembly has two sets disposed on the bottom of the rear support rods on both sides. When the frame is folded, the two sets of front wheel assemblies are suspended in the air and located between the rear support rods and the bottom support rods on both sides in the left and right direction. The lower part of the push rod and the rear wheel assembly are supported on the ground together.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In the stroller of the present invention, the frame mainly includes a front support, a rear support, a side rod frame, a push rod frame, a bottom support frame and a rear support frame. It has few rods and a simple structure in the unfolded state. When folding, it is only necessary to drive the push rod frame to rotate relative to the side rod frame, so that the rods in the frame can move relative to each other and retract, realizing the folding operation of the frame. The folding operation is simple and convenient. The folded frame structure is flat and compact and occupies less space. Attached Figure Description

[0017] Appendix Figure 1 This is a three-dimensional structural diagram of the frame of a children's stroller in an unfolded state according to a specific embodiment of the present invention.

[0018] Appendix Figure 2 For the appendix Figure 1 A side view diagram of the structure of a children's stroller;

[0019] Appendix Figure 3 For the appendix Figure 1 A three-dimensional structural diagram of a stroller frame in a semi-folded state;

[0020] Appendix Figure 4 For the appendix Figure 3 A side view diagram of the structure of a children's stroller;

[0021] Fig. 2 is a perspective view of the frame of the child stroller in the folded state; Figure 5 Fig. 3 is a side view of the frame of the child stroller in the folded state; Figure 1 Fig. 4 is a perspective view of the frame of the child stroller in the unfolded state;

[0022] Fig. 5 is a side view of the frame of the child stroller in the unfolded state; Figure 6 Fig. 6 is a perspective view of the frame of the child stroller in the unfolded state; Figure 3 Fig. 7 is a side view of the frame of the child stroller in the unfolded state;

[0023] Fig. 8 is a perspective view of the frame of the child stroller in the unfolded state;

[0024] Fig. 9 is a side view of the frame of the child stroller in the unfolded state;

[0025] Fig. 10 is a perspective view of the frame of the child stroller in the unfolded state;

[0026] Fig. 11 is a side view of the frame of the child stroller in the unfolded state; DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be further described below in conjunction with the drawings and specific embodiments.

[0028] The following descriptions of the front, rear, left, right, up and down directions are made in reference to the directions observed by a user when pushing the child stroller, with the frame of the child stroller in the unfolded state, and are only intended to clearly illustrate the relative positions of the various rods / components in the child stroller.

[0029] Referring to Fig. 1, there is shown a child stroller, which comprises a frame having an unfolded state and a folded state, a front wheel assembly 20 and a rear wheel assembly 30 arranged at the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state. Figures 1 to 6 The frame comprises a front support 1, a rear support 2, a side rod holder 3, a push rod holder 4, a rear support 6 and a bottom support 5, wherein the front support 1, the side rod holder 3, the push rod holder 4 and the rear support 6 each extend rearwardly and upwardly from bottom to top, the rear support 2 extends forwardly and upwardly from bottom to top, the bottom support 5 extends in the front-rear direction, the front wheel assembly 20 is arranged at the bottom of the front support 1, and the rear wheel assembly 20 is arranged at the bottom of the rear support 2.

[0030]

[0031] ​Two of the upper portion of the front support 1, the upper portion of the rear support 2 and the lower portion of the side rod support 3 are rotatably connected to one another, and the third one is rotatably connected to one of the aforementioned two, or the upper portion of the front support 1, the upper portion of the rear support 2 and the lower portion of the side rod support 3 are rotatably connected around the same rotation center line; the upper portion of the side rod support 3 is rotatably connected to the push rod support 4; the rear portion of the bottom support 5 is rotatably connected to the rear support 2, and the front portion of the bottom support 5 is rotatably and slidably arranged on the front support 1 along the length direction of the front support 1; the rear support 6 is rotatably connected to the rear support 2, the upper portion of the rear support 6 is rotatably connected to the lower portion of the push rod support 4, and the lower portion of the rear support 6 is rotatably and slidably arranged on the bottom support 5 along the length direction of the bottom support 5.

[0032] Specifically, as shown in the drawings, in the embodiment, the rods / components on the frame are arranged as follows:

[0033] The front support 1 comprises two front support rods 11 arranged on the left and right sides and extending in the up-down direction, a front cross rod 12 fixedly arranged between the lower portions of the two front support rods 11 and extending in the left-right direction, and two front wheel assemblies 20 arranged on the left and right lower portions of the front support 1.

[0034] The rear support 2 comprises two rear support rods 21 arranged on the left and right sides and extending in the up-down direction, a rear cross rod 22 fixedly arranged between the lower portions of the two rear support rods 21 and extending in the left-right direction, and two rear wheel assemblies 30 arranged on the lower portions of the two rear support rods 21. Here, the rear support rod 21 is a T-shaped rod, which comprises a main rod 21a extending in the up-down direction and a connecting rod 21b fixedly arranged on the upper portion of the main rod 21a. When the frame is in the unfolded state, the main rod 21a extends upward and forward, and the connecting rod 21b extends downward and rearward.

[0035] The side rod support 3 comprises two side rods 31 arranged on the left and right sides and extending in the up-down direction; the push rod support 4 comprises two push rods 41 arranged on the left and right sides and extending in the up-down direction. Here, the two push rods 41 are integrally arranged in the form of a U-shaped rod with the opening facing downward, and each push rod 41 comprises a push rod main body 41a extending in the up-down direction and a joint rod 41b extending downward and rearward from the lower end of the push rod main body 41a. The rear support 6 is located between the two rear support rods 21 in the left-right direction, and comprises two rear support rods 61 arranged on the left and right sides and extending in the up-down direction. The bottom support 5 comprises two bottom support rods 51 arranged on the left and right sides and extending in the front-rear direction.

[0036] The upper part of the front support rod 11 is connected to the lower end of the connecting rod 21b on each side of the frame to rotate around the first axis X1, the lower part of the side rod 31 is connected to the upper end of the connecting rod 21b to rotate around the second axis X2, the upper part of the side rod 31 is connected to the lower end of the push rod main body 41a of the push rod 41 to rotate around the third axis X3, the rear support rod 61 and the main rod 21a of the rear support rod 21 intersect each other and are connected at the intersection to rotate around the fourth axis X4, the upper part of the rear support rod 61 is connected to the lower end of the middle joint rod 41b of the push rod 41 to rotate around the fifth axis X5, and the fifth axis X5 is below the third axis X3; the rear part of the bottom support rod 51 is connected to the lower part of the main rod 21a of the rear support rod 21 to rotate around the seventh axis X7, and the front part of the bottom support rod 51 is connected to the first sliding piece 7 to rotate around the sixth axis X6, and the first sliding piece 7 is a first sliding sleeve that is slidingly fitted on the same side of the front support rod 11, so that the front part of the bottom support rod 51 can rotate relative to the front support rod 11 and slide up and down along the front support rod 11; the lower part of the rear support rod 61 is connected to the second sliding piece 8 to rotate, and the second sliding piece 8 is a second sliding sleeve that is slidingly fitted on the same side of the bottom support rod 51, so that the lower part of the rear support rod 61 can rotate relative to the bottom support rod 51 and slide forward and backward along the bottom support rod 51.

[0037] The first axis X1, the second axis X2, the third axis X3, the fourth axis X4, the fifth axis X5, the sixth axis X6, and the seventh axis X7 are parallel to each other and extend in the left-right direction.

[0038] The frame further comprises a seat frame 9 extending in the front-rear direction in the unfolded state, the seat frame 9 comprising two seat rods 91 arranged on the left and right sides and extending in the front-rear direction, and on each side of the frame, the rear part of the seat rod 91 is connected to the rear support rod 61 to rotate, and the position of the rotating connection is above the fourth axis X4; the front part of the seat rod 91 is connected to the third sliding piece 10, and the third sliding piece 10 is a third sliding sleeve that is slidingly fitted on the same side of the side rod 31.

[0039] Referring to Figure 1 , Figure 2As shown, with the frame in its unfolded state, on both sides of the frame, the connecting rods 21b of the front support rod 11 and rear support rod 21, the side rod 31, and the push rod body 41a of the push rod 41 extend backwards from bottom to top along the same length direction. The joint rod 41b of the rear support rod 61 and the push rod 41 also extend backwards from bottom to top along the same length direction. A triangle is formed between the front support rod 11, side rod 31, push rod 41, rear support rod 61, and rear support rod 21 on the same side. A triangle is also formed between the front support rod 11, rear support rod 21, and bottom support rod 51 on the same side. A triangle is also formed between the rear support rod 21, side rod 31, push rod 41, and rear support rod 61 on the same side. The front wheel assembly 20 and the rear wheel assembly 30 are simultaneously supported on the ground. The frame has a simple structure and good load-bearing capacity in this unfolded state.

[0040] As shown in the attached figures, the front support 1 is also provided with a first limiting member 1a and the bottom support 5 is provided with a second limiting member 5a, which are used to restrict the first sliding member 7 from sliding downward along the front support 1 and the second sliding member 8 from sliding backward along the bottom support 5 when the frame is in the unfolded state, thereby further improving the stability of the frame in the unfolded state.

[0041] Specifically, each of the left and right sides of the front support rod 11 of the front bracket 1 is provided with a first limiting member 1a, which is a first limiting post. The first sliding sleeve of the first sliding member 7 is provided with a first limiting groove 7a. When the frame is in the unfolded state, the first limiting post is engaged in the first limiting groove 7a, so that the first sliding member 7 abuts against the first limiting member 1a downward, thereby restricting the first sliding member 7 from sliding downward along the front support rod 11. Similarly, each of the left and right sides of the bottom support rod 51 of the bottom support frame 5 is provided with a second limiting member 5a, which is a second limiting post. The second sliding sleeve of the second sliding member 8 is provided with a second limiting groove 8a. When the frame is in the unfolded state, the second limiting post is engaged in the second limiting groove 8a, so that the second sliding member 8 abuts against the second limiting member 8a backward, thereby restricting the second sliding member 8 from sliding backward along the bottom support rod 51.

[0042] See Figure 3 , Figure 4 As shown, when the stroller needs to be folded up, after the locking mechanism is unlocked, the push rod frame 4 is driven to move backward and downward, causing the push rod frame 4 to flip and retract relative to the side rod frame 3, and driving the side rod frame 3 to flip and retract backward toward the rear support 2. This linkage causes the rear support frame 6 to rotate relative to the rear support 2, and the second sliding member 8 to slide forward along the bottom support frame 5, causing the bottom support frame 5 to rotate relative to the rear support 2, which in turn causes the first sliding member 7 to slide upward along the front support 1, so that the rods on the frame gradually retract together.

[0043] The folded stroller is like Figure 5 , Figure 6As shown, in the folded state, the front support 1, the bottom support 5, the rear support 2, the side rod frame 3 and the push rod frame 4 are folded in sequence from front to back, the front support rod 11 and the bottom support rod 51 are folded at the front side of the main rod 21a, the side rod 31 and the push rod 41 are folded at the rear side of the main rod 21a, the rear support 6 and the seat frame 9 are folded between the left and right side rod members of the bottom support 5, the rear support 2, the side rod frame 3 and the push rod frame 4, the two groups of front wheel assemblies 20 are suspended and located between the two side rear rods 21 and the two bottom support rods 51 in the left and right directions, the lower part of the push rod 41 is supported on the ground together with the rear wheel assembly 30, forming the self-standing of the folded child stroller. In the folded child stroller, all the rod members are tightly folded together, the structure is very compact and flat, which brings great convenience for the user's daily carrying and storage, etc.

[0044] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A stroller, comprising a frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly disposed at the bottom of the frame, characterized in that: The frame includes a front support, a rear support, side struts, a push rod, a rear support, and a bottom support. In the deployed state, the front support, side struts, push rod, and rear support each extend rearward at an angle from bottom to top, while the rear support extends forward at an angle from bottom to top. The front wheel assembly is located at the lower part of the front support, and the rear wheel assembly is located at the lower part of the rear support. Two of the upper parts of the front support, the upper parts of the rear support, and the lower parts of the side struts are rotatably connected, and the third is rotatably connected to one of the aforementioned two. Alternatively, the upper parts of the front support, the upper parts of the rear support, and the lower parts of the side struts are rotatably connected. The lower part of the side frame, including the three components, is rotatably connected around the same rotation center line. The bottom support frame extends in the front-rear direction, and its rear part is rotatably connected to the rear support. The front part of the bottom support frame is both rotatable relative to the front support and slidable relative to the front support along its length. The upper part of the side frame is rotatably connected to the push rod frame. The rear support frame is rotatably connected to the rear support. The upper part of the rear support frame is rotatably connected to the lower part of the push rod frame. The lower part of the rear support frame is both rotatable relative to the bottom support frame and slidable relative to the bottom support frame along its length. The front part of the bottom support frame is rotatably connected to a first sliding member, which is slidably disposed on the front support frame along the length extension direction of the front support frame; the lower part of the rear support frame is rotatably connected to a second sliding member, which is slidably disposed on the bottom support frame relative to the bottom support frame along the length extension direction of the bottom support frame. During the transition of the frame from the unfolded state to the folded state, the first sliding member slides upward along the front support, and the second sliding member slides forward along the bottom support; when the frame is in the folded state, the first sliding member and the second sliding member move closer to each other.

2. The stroller according to claim 1, characterized in that: When the frame is in a folded state, the front support, the bottom support, the rear support, the side support, and the push rod support are folded together sequentially from front to back.

3. The stroller according to claim 1, characterized in that: The front support is provided with a first limiting member, and the bottom support is provided with a second limiting member. When the frame is in the unfolded state, the first sliding member abuts against the first limiting member downwards, and the second sliding member abuts against the second limiting member backwards.

4. The stroller according to claim 1, characterized in that: The upper part of the front bracket is rotatably connected to the upper part of the rear bracket about a first axis, and the upper part of the rear bracket is rotatably connected to the lower part of the side frame about a second axis, wherein the first axis and the second axis are parallel to each other.

5. The stroller according to claim 1, characterized in that: The frame also includes a seat frame that extends in the front-rear direction when unfolded. The rear of the seat frame is rotatably connected to the rear support frame, and the front of the seat frame is rotatably connected to a third sliding member. The third sliding member is slidably disposed on the side frame along the length extension direction of the side frame.

6. The stroller according to any one of claims 1 to 5, characterized in that: The front support includes two front struts located on the left and right sides, both extending vertically; the rear support includes two rear struts located on the left and right sides, both extending vertically; the side struts include two side struts located on the left and right sides, both extending vertically; the push rods include two push rods located on the left and right sides, both extending vertically; the rear support includes two rear support struts located on the left and right sides, both extending vertically; the bottom support includes two bottom support struts located on the left and right sides, both extending vertically; and the left and right sides of the frame... The upper part of the front support rod and the lower part of the side rod are rotatably connected to the upper part of the rear support rod. The upper part of the side rod is rotatably connected to the push rod. The rear part of the bottom support rod is rotatably connected to the rear support rod. The front part of the bottom support rod is mounted on the front support rod, which can both rotate and slide relative to each other. The rear support rod and the rear support rod intersect each other and are rotatably connected at the intersection. The upper part of the rear support rod is rotatably connected to the lower part of the push rod. The lower part of the rear support rod is mounted on the bottom support rod, which can both rotate and slide relative to each other.

7. The stroller according to claim 6, characterized in that: The front part of the bottom support rod is rotatably connected to a first sliding member, which is slidably disposed on the front support rod along the length extension direction of the front support rod; the lower part of the rear support rod is rotatably connected to a second sliding member, which is slidably disposed on the bottom support rod along the length extension direction of the bottom support rod.

8. The stroller according to claim 6, characterized in that: The rear support rod includes a main body rod extending in the vertical direction and a connecting rod fixed to the upper part of the main body rod. The upper part of the front support rod is rotatably connected to one end of the connecting rod, and the lower part of the side rod is rotatably connected to the other end of the connecting rod. When the frame is in the unfolded state, the front support rod, connecting rod, and side rod on the same side extend in the same length direction. When the frame is in the folded state, the front support rod and the bottom support rod are folded up to the front of the main body rod, and the side rod and the push rod are folded up to the rear of the main body rod.

9. The stroller according to claim 6, characterized in that: The front wheel assembly has two sets disposed on the left and right sides of the bottom of the front support, and the rear wheel assembly has two sets disposed on the bottom of the rear support rods on both sides. When the frame is folded, the two sets of front wheel assemblies are suspended in the air and located between the rear support rods and the bottom support rods on both sides in the left and right direction. The lower part of the push rod and the rear wheel assembly are supported on the ground together.

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