A child's pushchair

Abstract

The application discloses a child stroller, which comprises a stroller frame having an unfolded state and a folded state, the stroller frame comprising a front support, a rear support assembly, a push rod assembly, a seat part, a first connecting rod and a second connecting rod, the rear support assembly comprising a rear lower rod and a rear upper rod which is slidably arranged on the rear lower rod along the length extension direction of the rear lower rod, the upper part of the front support is rotationally connected with the upper part of the rear lower rod, the lower part of the push rod assembly is rotationally connected with the lower part of the rear lower rod, one end of the support rod is rotationally connected with the front support, the other end of the support rod is rotationally connected with the lower part of the push rod assembly, the upper part of the rear upper rod is rotationally connected with the front part of the seat part, one end of the first connecting rod is rotationally connected with the rear part of the seat part, one end of the second connecting rod is rotationally connected with the other end of the first connecting rod, the other end of the second connecting rod is rotationally connected with the support rod, and the second connecting rod is rotationally connected with the lower part of the rear upper rod. The child stroller has a compact structure and small volume after being folded, and is convenient to carry and store.

Description

TECHNICAL FIELD

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

[0002] In order to facilitate the carrying and storage of the children's stroller, most of the children's strollers in the prior art can be folded. The children's stroller comprises a stroller frame, which is generally composed of a plurality of rod members connected with each other through rotation and / or sliding. When the connection mode of the rod members and the rod members between the stroller frame is different, the folding mode of the stroller frame is also different, and the overall size of the children's stroller after the stroller frame is folded is also different. Some children's strollers in the prior art have the problem that the structure is still relatively large after being folded, which is not convenient for carrying and storing. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art and provide a children's stroller with a compact structure and small size after being folded.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A children's stroller, comprising a stroller frame having an unfolded state and a folded state, the stroller frame comprising:

[0006] a front support;

[0007] a rear support assembly, the rear support assembly comprising a rear lower rod and a rear upper rod slidably arranged on the rear lower rod along the length extension direction of the rear lower rod, the upper part of the front support being rotatably connected with the upper part of the rear lower rod through a first shaft;

[0008] a push rod assembly, the lower part of the push rod assembly being rotatably connected with the lower part of the rear lower rod through a second shaft;

[0009] a support rod, one end of the support rod being rotatably connected with the front support through a third shaft, the other end of the support rod being rotatably connected with the lower part of the push rod assembly through a fourth shaft;

[0010] a seat part, the upper part of the rear upper rod being rotatably connected with the front part of the seat part through a fifth shaft;

[0011] a first connecting rod, one end of the first connecting rod being rotatably connected with the rear part of the seat part through a sixth shaft;

[0012] a second connecting rod, one end of the second connecting rod being rotatably connected with the other end of the first connecting rod through a seventh shaft, the other end of the second connecting rod being rotatably connected with the support rod through an eighth shaft, the second connecting rod being rotatably connected with the lower part of the rear upper rod through a ninth shaft.

[0013] Preferably, a sliding groove extending along the length direction of the rear lower rod is arranged on the rear lower rod, and the ninth shaft is arranged in the sliding groove and is arranged to be slidable along the length direction of the sliding groove.

[0014] Preferably, when the child stroller is in the unfolded state, the fifth shaft, the first shaft and the ninth shaft are arranged in sequence from top to bottom on the rear support assembly.

[0015] Preferably, when the child stroller is in the unfolded state, the third shaft is arranged in front of the first shaft on the front support.

[0016] Preferably, when the child stroller is in the unfolded state, the third shaft, the eighth shaft and the fourth shaft are arranged in sequence from front to back on the support rod, and the eighth shaft is arranged close to the third shaft.

[0017] Preferably, the seat part is a seat plate, or the seat part comprises seat rods arranged on the left and right sides and a cloth cover arranged between the seat rods on the left and right sides.

[0018] Preferably, the push rod assembly is arranged in the middle of the child stroller, the push rod assembly has a first extension rod extending forward from the lower end of the push rod assembly, the first extension rod is arranged below the second shaft, the support rods are arranged on the left and right sides of the child stroller respectively, and the first extension rods are coaxially rotatably connected to the other ends of the support rods on the left and right sides through the fourth shafts respectively.

[0019] Preferably, a second extension rod extending rearward and upward is arranged on the rear lower rod, the rear lower rods and the second extension rods are arranged on the left and right sides of the child stroller respectively in one-to-one correspondence, the push rod assembly is arranged in the middle of the child stroller, and the lower part of the push rod assembly is coaxially rotatably connected to the second extension rods on the left and right sides through the second shafts.

[0020] Preferably, the push rod assembly comprises a lower push rod and an upper push rod arranged on the lower push rod to be slidable along the length direction of the lower push rod, the lower part of the lower push rod is rotatably connected to the rear lower rod through the second shaft, when the child stroller is in the unfolded state, the lower end of the upper push rod is higher than the lower end of the lower push rod, and when the child stroller is in the folded state, the lower end of the upper push rod extends downward below the lower push rod.

[0021] Furthermore, the lower push rod has a cavity extending along its length, and the upper push rod is slidably disposed in the cavity along the length extension direction of the cavity. The lower end of the cavity is open. When the stroller is in the unfolded state, the lower end of the upper push rod is received in the cavity. When the stroller is in the folded state, the lower end of the upper push rod extends downward to the outside of the cavity.

[0022] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: When the stroller of the present invention is folded, the push rod assembly rotates forward and approaches the lower rear rod, the front support rotates backward and approaches the lower rear rod, the upper rear rod slides downward and approaches the lower rear rod, and the seat part rotates relative to the upper rear rod and the first connecting rod and is housed between the lower rear rod and the push rod assembly, so that the components of the stroller frame are closely close together, making the folded stroller compact and small in size, thus facilitating the carrying and storage of the stroller. Attached Figure Description

[0023] Appendix Figure 1 This is a three-dimensional schematic diagram of the stroller in the unfolded state according to this embodiment;

[0024] Appendix Figure 2 This is a side view of the stroller in the unfolded state according to this embodiment;

[0025] Appendix Figure 3 This is a cross-sectional view of the stroller in the unfolded state according to this embodiment;

[0026] Appendix Figure 4 This is a three-dimensional schematic diagram of the stroller in this embodiment after the upper push rod has slid down a certain distance (with the seat removed);

[0027] Appendix Figure 5 This is a three-dimensional schematic diagram of the folding process of the stroller in this embodiment;

[0028] Appendix Figure 6 This is a side view of the stroller during the folding process in this embodiment;

[0029] Appendix Figure 7 This is a cross-sectional view of the stroller during the folding process in this embodiment;

[0030] Appendix Figure 8 This is a three-dimensional schematic diagram of the stroller in the folded state according to this embodiment;

[0031] Appendix Figure 9 This is a side view of the stroller in the folded state according to this embodiment;

[0032] Appendix Figure 10 This is a cross-sectional view of the stroller in the folded state according to this embodiment.

[0033] The components are as follows: 11. Front support; 12. Rear support assembly; 121. Lower rear rod; 121a. Slide groove; 121b. Second extension rod; 122. Upper rear rod; 13. Push rod assembly; 131. Lower push rod; 131a. First extension rod; 132. Upper push rod; 14. Support rod; 15. Seat section; 16. First connecting rod; 17. Second connecting rod; 2. Front wheel assembly; 3. Rear wheel assembly; 41. First axle; 42. Second axle; 43. Third axle; 44. Fourth axle; 45. Fifth axle; 46. Sixth axle; 47. Seventh axle; 48. Eighth axle; 49. Ninth axle. Detailed Implementation

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] In the following description, the directions "front," "back," "left," "right," "up," and "down" all refer to... Figure 2 In the figure, the left direction is "front", the right direction is "back", the top direction is "up", and the bottom direction is "down". The directions perpendicular to the paper are "left" and "right". The above definitions of directions 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 orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0036] like Figures 1-10 As shown, the stroller of the present invention includes a stroller frame having an unfolded state and a folded state, a front wheel assembly 2 disposed at the bottom front of the stroller frame, and a rear wheel assembly 3 disposed at the bottom rear of the stroller frame.

[0037] The stroller frame includes a front support 11, a rear support assembly 12, a push rod assembly 13, a support rod 14, a seat 15, a first link 16, and a second link 17.

[0038] The front wheel assembly 2 is located at the bottom of the front bracket 11.

[0039] The rear support assembly 12 includes a lower rear rod 121 and an upper rear rod 122 slidably disposed on the lower rear rod 121 along its length extension direction. In this embodiment, the lower rear rod 121 has a cavity extending along its length direction, and the upper rear rod 122 is partially located in the cavity and slidably disposed along the length extension direction of the cavity.

[0040] The rear wheel assembly 3 is located at the bottom of the rear lower rod 121. The upper part of the front bracket 11 is rotatably connected to the upper part of the rear lower rod 121 via a first shaft 41.

[0041] The lower part of the push rod assembly 13 is rotatably connected to the rear lower rod 121 via the second shaft 42.

[0042] One end of the strut 14 is rotatably connected to the front support 11 through a third shaft 43, and the other end of the strut 14 is rotatably connected to the lower part of the push rod assembly 13 through a fourth shaft 44.

[0043] The upper part of the rear upper rod 122 is rotatably connected to the front part of the seat part 15 through a fifth shaft 45. One end of the first connecting rod 16 is rotatably connected to the rear part of the seat part 15 through a sixth shaft 46, and the other end of the first connecting rod 16 is rotatably connected to one end of the second connecting rod 17 through a seventh shaft 47. The other end of the second connecting rod 17 is rotatably connected to the strut 14 through an eighth shaft 48, and the second connecting rod 17 is also rotatably connected to the lower part of the rear upper rod 122 through a ninth shaft 49.

[0044] In this way, a four-bar linkage mechanism is formed between the front support 11, the rear lower rod 121, the push rod assembly 13 and the strut 14, and a four-bar linkage mechanism is also formed between the first connecting rod 16, the second connecting rod 17, the rear upper rod 122 and the seat part 15.

[0045] In the present embodiment, the rear lower rod 121 is provided with a sliding groove 121a extending along the length direction thereof, and the ninth shaft 49 is arranged in the sliding groove 121a and is slidably arranged along the length direction of the sliding groove 121a. In this way, a crank slider mechanism is also formed between the strut 14, the second connecting rod 17, the ninth shaft 49 and the rear lower rod 121.

[0046] When one of the front support 11, the rear lower rod 121, the rear upper rod 122, the push rod assembly 13, the strut 14, the seat part 15, the first connecting rod 16 and the second connecting rod 17 is actuated, the remaining components can be simultaneously actuated through the two four-bar linkage mechanisms and the crank slider mechanism described above, thereby facilitating the folding and unfolding operations of the stroller frame.

[0047] In the present embodiment, the push rod assembly 13 comprises a lower push rod 131 and an upper push rod 132, the upper push rod 132 being slidably arranged on the lower push rod 131 along the length direction of the lower push rod 131, and the lower part of the lower push rod 131 is rotatably connected to the rear lower rod 121 through the second shaft 42.

[0048] Specifically, the lower push rod 131 has a lumen extending along the length direction thereof, and the upper push rod 132 is slidably arranged in the lumen along the length direction of the lumen. The lower end of the lumen of the lower push rod 131 is open, so that the lower end of the upper push rod 132 can be accommodated in the lumen of the lower push rod 131 or extended out of the lumen of the lower push rod 131 by sliding the upper push rod 132 relative to the lower push rod 131.

[0049] Of course, the push rod assembly 13 can also adopt the structure of a whole rod, or the lower push rod 131 and the upper push rod 132 can also be rotatably connected.

[0050] The front support 11, the rear support assembly 12, the strut 14, the first connecting rod 16 and the second connecting rod 17 are respectively arranged on the left and right sides of the stroller, and the push rod assembly 13 is arranged in the middle of the stroller.

[0051] In the embodiment, the lower push rod 131 has a first extension rod 131a extending forward from the lower end of the lower push rod 131, the first extension rod 131a is below the second shaft 42, and the other end of the strut 14 on each side is coaxially connected to the first extension rod 131a through the fourth shaft 44. When the stroller is in the unfolded state, the fourth shaft 44 is blocked by the rear lower rod 122, so that the fourth shaft 44 cannot be seen from the side of the stroller, making the appearance of the stroller neat and beautiful.

[0052] The rear lower rod 121 on each side is provided with a second extension rod 121b extending rearward and upward, and the lower part of the lower push rod 131 is coaxially connected to the second extension rod 121b on each side through the second shaft 42. In this way, when the stroller is folded, the upper push rod 132 is facilitated to slide downward relative to the lower push rod 131 to extend to the outside of the lumen of the lower push rod 131, so that the structure of the stroller after folding is more compact.

[0053] In the embodiment, the seat part 15 adopts the structure of a seat plate. Of course, the seat part can also adopt a seat rod, and the seat rod is arranged on the left and right sides of the stroller. At this time, the seat part further includes a cloth cover connected between the seat rods on the left and right sides.

[0054] When the stroller is in the unfolded state, the front support 11 on each side extends obliquely upward from front to back. The rear lower rod 121 and the rear upper rod 122 on each side extend obliquely downward from front to back, and the rear upper rod 122 mostly extends upward to the outside of the lumen of the rear lower rod 121. The push rod assembly 13 extends obliquely upward from front to back, and the upper push rod 132 mostly extends upward to the outside of the lumen of the lower push rod 131, and the lower end of the upper push rod 132 is accommodated in the lumen of the lower push rod 131. The strut 14 extends in the front-back direction, and the seat part 15 extends in the front-back direction. On the front support 11, the third shaft 43 is located in front of the first shaft 41. On the rear support assembly 12, the fifth shaft 45, the first shaft 41 and the ninth shaft 49 are sequentially arranged from top to bottom. On the strut 14, the third shaft 43, the eighth shaft 48 and the fourth shaft 44 are sequentially arranged from front to back, and the eighth shaft 48 is arranged close to the third shaft 43. As shown. Figures 1-3

[0055] ​When the stroller is folded from its unfolded state, the upper push rod 132 slides downwards to approach the lower push rod 131, and the entire push rod assembly 13 rotates forward around the second axis 42 to approach the rear lower rod 121. As the push rod assembly 13 rotates forward, the support rod 14 moves backwards, pulling the front support 11 to rotate backwards around the first axis 41 to approach the rear lower rod 121. This causes the second connecting rod 17 to move backwards, pulling the seat plate downwards around the fifth axis 45 and the sixth axis 46 via the first connecting rod 16. As the seat plate rotates downwards, the rear upper rod 122 slides downwards and gradually retracts into the cavity of the rear lower rod 121. The folding process is as follows: Figures 5-7 As shown, until the push rod assembly 13 and the lower rear rod 121 approach each other, the front bracket 11 and the lower rear rod 121 approach each other, the upper rear rod 122 is mostly retracted into the cavity of the lower rear rod 121, the seat plate is received between the lower rear rod 121 and the push rod assembly 13, the upper push rod 132 is mostly retracted into the cavity of the lower push rod 131, the lower part of the upper push rod 132 extends downward to the outside of the cavity of the lower push rod 131, and finally folds as shown. Figures 8-10 As shown. The folded stroller has a compact structure, small size, and is easy to carry and store.

[0056] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A children's stroller, characterized in that: The cart frame includes an unfolded state and a folded state, the cart frame comprising: Front bracket; A rear support assembly, the rear support assembly including a rear lower rod and a rear upper rod slidably disposed on the rear lower rod along the length extension direction of the rear lower rod, the upper part of the front support and the upper part of the rear lower rod being rotatably connected by a first shaft; A push rod assembly, the lower part of which is rotatably connected to the lower part of the rear lower rod via a second shaft; A strut, one end of which is rotatably connected to the front support via a third axis, and the other end of which is rotatably connected to the lower part of the push rod assembly via a fourth axis; The upper part of the rear upper rod is rotatably connected to the front part of the seat part via a fifth axis; The first link, one end of which is rotatably connected to the rear part of the seat via a sixth axis; The second link has one end rotatably connected to the other end of the first link via a seventh axis, the other end of the second link rotatably connected to the support rod via an eighth axis, and the second link rotatably connected to the lower part of the upper rear rod via a ninth axis.

2. The stroller according to claim 1, characterized in that: The lower rear rod is provided with a sliding groove extending along its length direction, and the ninth shaft is located in the sliding groove and can be slidably arranged along the length extension direction of the sliding groove.

3. The stroller according to claim 1, characterized in that: When the stroller is in the unfolded state, the fifth axis, the first axis, and the ninth axis are arranged sequentially from top to bottom on the rear support assembly.

4. The stroller according to claim 1, characterized in that: When the stroller is in the unfolded state, the third axis is located in front of the first axis on the front support.

5. The stroller according to claim 1, characterized in that: When the stroller is in the unfolded state, the third axis, the eighth axis, and the fourth axis are arranged sequentially from front to back on the support rod, with the eighth axis positioned close to the third axis.

6. The stroller according to claim 1, characterized in that: The seat portion is a seat board, or the seat portion includes seat posts located on the left and right sides and a fabric cover disposed between the seat posts on the left and right sides.

7. The stroller according to claim 1, characterized in that: The push rod assembly is located in the middle of the stroller. The push rod assembly has a first extension rod extending forward from its lower end. The first extension rod is located below the second shaft. The support rods are respectively located on the left and right sides of the stroller. The first extension rod is rotatably connected to the other end of the support rods on the left and right sides through the fourth shaft.

8. The stroller according to claim 1, characterized in that: The rear lower rod is provided with a second extension rod extending backward and upward. The rear lower rod and the second extension rod are respectively provided on the left and right sides of the stroller. The push rod assembly is provided in the middle of the stroller. The lower part of the push rod assembly is rotatably connected to the second extension rods on the left and right sides through the second shaft.

9. The stroller according to claim 1, characterized in that: The push rod assembly includes a lower push rod and an upper push rod that is slidably disposed on the lower push rod along the length extension direction of the lower push rod. The lower part of the lower push rod is rotatably connected to the rear lower rod via the second shaft. When the stroller is in the unfolded state, the lower end of the upper push rod is higher than the lower end of the lower push rod. When the stroller is in the folded state, the lower end of the upper push rod extends downward below the lower push rod.

10. The stroller according to claim 9, characterized in that: The lower push rod has a cavity extending along its length, and the upper push rod is slidably disposed in the cavity along the length extension direction of the cavity. The lower end of the cavity is open. When the stroller is in the unfolded state, the lower end of the upper push rod is received in the cavity. When the stroller is in the folded state, the lower end of the upper push rod extends downward to the outside of the cavity.

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