Baby stroller

Abstract

The utility model discloses a child stroller which comprises a stroller frame with an unfolded state and a folded state, the stroller frame comprises a front support, a rear support and a push rod, the rear support is rotationally connected with the front support, and the push rod is in sliding fit with the front support. The baby stroller further comprises a front wheel assembly arranged at the bottom of the front support and a rear wheel assembly arranged at the bottom of the rear support, when the baby stroller is in a folded state, the front support and the rear support get close to each other, and the push rod slides downwards to be folded on the front support. The push rod extends downwards to the lower portion of the front support so that the push rod, the front wheel assembly and / or the rear wheel assembly can be jointly supported on the ground. After the stroller is folded, the lower portion of the push rod slides to the position below the lower portion of the front support, and the lower portion of the push rod and the front wheel assembly and / or the rear wheel assembly can be supported on the ground together, so that the stroller can stand on the ground after being folded, and the stroller is convenient to carry and store.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, specifically to a children's stroller. Background Technology

[0002] Strollers are primarily used by adults when taking children out. A typical stroller includes a frame, a front wheel assembly located at the front bottom of the frame, and a rear wheel assembly located at the rear bottom of the frame. While most strollers are foldable, some cannot stand upright after folding, making them inconvenient to carry and store. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a stroller that can stand upright on the ground after folding.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A stroller includes a stroller frame having an unfolded state and a folded state. The stroller frame includes a front support, a rear support, and a push rod. The rear support is rotatably connected to the front support, and the push rod is slidably engaged with the front support. The stroller also includes a front wheel assembly disposed at the bottom of the front support and a rear wheel assembly disposed at the bottom of the rear support. When the stroller is in the folded state, the front support and the rear support are close together, the push rod slides downward and folds into the front support, and the push rod extends downward to the lower part of the front support so that the push rod, the front wheel assembly, and / or the rear wheel assembly can be supported on the ground together.

[0006] Preferably, the front wheel assembly is rotatably mounted at the bottom of the front support about a pivot extending in the vertical direction. When the stroller is folded, the lowest point of the rear wheel assembly is located below the lowest point of the front wheel assembly, and the lower part of the rear wheel assembly and the push rod are supported on the ground together.

[0007] Furthermore, the front support and the push rod are both located in the middle of the stroller frame, the rear support is located on the left and right sides of the stroller frame, and the rear wheel assembly is located at the bottom of the rear support on each side. When the stroller is in a folded state, the rear wheel assembly on the left and right sides and the lower part of the push rod together support the ground, and the rear wheel assembly on the left and right sides and the lower part of the push rod are sequentially connected to form a triangular structure.

[0008] Preferably, the push rod includes a lower push rod and an upper push rod, the upper push rod being slidably disposed on the lower push rod along the length extension direction of the lower push rod, the lower push rod being slidably disposed on the front bracket along the length extension direction of the front bracket, and the push rod further includes a locking member for locking the relative positions of the upper push rod and the lower push rod.

[0009] Furthermore, when the stroller is in a folded state, the locking element cooperates with the front support to lock the positions of the front support and the lower push rod.

[0010] Furthermore, the front support is provided with a protrusion, and the locking member is provided with a recess that cooperates with the protrusion. When the stroller is in a folded state, the protrusion is engaged in the recess. The locking member is rotatably disposed on the upper part of the lower push rod. The locking member rotates relative to the lower push rod to make the protrusion engage in the recess, or to make the protrusion disengage from the recess.

[0011] Furthermore, the stroller also includes a first locking mechanism for locking the relative positions of the front support and the lower push rod when the stroller frame is in the unfolded state, and for unlocking the first locking mechanism when the stroller is folded and the upper push rod slides relative to the lower push rod.

[0012] And / or, the stroller further includes a second locking mechanism for locking the relative positions of the front support and the rear support when the stroller frame is in the unfolded state, and for unlocking the second locking mechanism when the stroller folds down and slides relative to the front support.

[0013] Preferably, the front support has a cavity extending along its length, and the push rod is slidably disposed in the cavity along the length extension direction of the cavity, with the bottom of the cavity open; when the stroller is in the unfolded state, the lower part of the push rod is located in the cavity and does not extend to the outside of the cavity; when the stroller is in the folded state, the lower part of the push rod extends from the bottom of the cavity to the outside of the cavity.

[0014] Preferably, the stroller further includes a seat assembly and a connecting rod disposed on the stroller frame. The seat assembly includes a seat plate, the rear of which is rotatably connected to the upper part of the front support, one end of which is rotatably connected to the upper part of the rear support, and the other end of which is rotatably connected to the front of the seat plate.

[0015] Furthermore, the stroller also includes a pull cord disposed between the upper part of the seat and the push rod, and a cloth cover disposed on the pull cord.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: After the stroller of this utility model is folded, the lower part of the push rod slides to the lower part of the front support, and the lower part of the push rod can stand on the ground together with the front wheel assembly and / or the rear wheel assembly, so that the stroller can stand on its own after being folded, which makes it convenient to carry and store the stroller. Attached Figure Description

[0017] Appendix Figure 1 This is a three-dimensional schematic diagram of the stroller in the unfolded state according to this embodiment;

[0018] Appendix Figure 2 This is a three-dimensional schematic diagram of the stroller in the unfolded state of this embodiment (with the pull rope and cloth cover removed).

[0019] Appendix Figure 3 This is a side view of the stroller in the unfolded state of this embodiment (with the pull cord and fabric cover removed).

[0020] Appendix Figure 4 This is a three-dimensional schematic diagram of the stroller in this embodiment during the folding process (with the pull cord and cloth cover removed).

[0021] Appendix Figure 5 This is a side view of the stroller in this embodiment during the folding process (with the pull cord and cloth cover removed).

[0022] Appendix Figure 6 This is a three-dimensional schematic diagram of the stroller in the folded state of this embodiment (with the pull cord and cloth cover removed).

[0023] Appendix Figure 7 This is a side view of the stroller in the folded state of this embodiment (with the pull cord and cloth cover removed).

[0024] The components are as follows: 11. Front bracket; 111. Front support rod; 112. First connecting piece; 113. Second connecting piece; 113a. Protrusion; 12. Rear bracket; 13. Push rod; 131. Upper push rod; 132. Lower push rod; 133. Push handle; 133a. Crossbar; 133b. Side rod; 14. Rear crossbar; 2. Seat plate; 21. Third connecting piece; 22. Fourth connecting piece; 3. Connecting rod; 4. Front wheel assembly; 5. Rear wheel assembly; 6. Locking piece; 61. Recess; 7. Pull cord; 8. Fabric cover. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] In the following description, the directions "front," "back," "left," "right," "up," and "down" all refer to... Figure 3In 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 this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figures 1-7 As shown, the stroller in this embodiment includes a stroller frame, a front wheel assembly 4 disposed at the bottom front of the stroller frame, and a rear wheel assembly 5 disposed at the bottom rear of the stroller frame.

[0028] The trolley frame includes a front support 11, a rear support 12, and a push rod 13. A front wheel assembly 4 is disposed at the lower part of the front support 11, and a rear wheel assembly 5 is disposed at the lower part of the rear support 12. The upper part of the rear support 12 is rotatably connected to the upper part of the front support 11. The lower part of the push rod 13 is slidably connected to the upper part of the front support 11, allowing the push rod 13 to be slidably positioned relative to the front support 11 along its length.

[0029] In this embodiment, the front support 11 includes a front support rod 111 and a first connecting member 112. The front support rod 111 is located in the middle of the stroller in the left-right direction. When the stroller frame is in the unfolded state, the front support rod 111 extends from front to back and upward. The front wheel assembly 4 is disposed at the lower part of the front support rod 111. The first connecting member 112 is fixedly disposed at the upper part of the front support rod 111. The rear supports 12 are respectively disposed on the left and right sides of the first connecting member 112. The upper part of each rear support 12 is rotatably connected to the corresponding side of the first connecting member 112. The rear wheel assemblies 5 are respectively disposed at the lower part of each rear support 12.

[0030] Preferably, the front support rod 111 has a cavity extending along its length, and the push rod 13 is slidably disposed within the cavity of the front support rod 111 along the length extension direction of the cavity.

[0031] The push rod 13 can be a single rod or composed of multiple rods that are sequentially slidably connected. In this embodiment, both the upper and lower ends of the cavity of the front support rod 111 are open, allowing the upper part of the push rod 13 to extend outside the upper part of the cavity, while the lower part of the push rod 13 can be retracted into the cavity or extended to the outside of the cavity. The push rod 13 includes an upper push rod 131 and a lower push rod 132. The lower push rod 132 has a cavity extending along its length. The upper push rod 131 can be slidably disposed within the cavity of the lower push rod 132 along the length extension direction of the cavity, and the lower push rod 132 can be slidably disposed within the cavity of the front support rod 111 along the length extension direction of the cavity. Preferably, the upper push rod 131, lower push rod 132, and front support rod 111 are all arc-shaped structures. When the stroller is in the unfolded state, the arc-shaped structures of the upper push rod 131, lower push rod 132, and front support rod 111 are arranged in sequence, making the stroller aesthetically pleasing.

[0032] The push rod 13 also includes a push handle 133, which is fixedly disposed at the upper end of the upper push rod 131. The push handle 133 includes at least a horizontal bar 133a extending in the left-right direction. In this embodiment, the push handle 133 also includes side bars 133b extending forward from the left and right ends of the horizontal bar 133a, respectively.

[0033] The push rod 13 also includes a locking member 6, which is used to lock the relative positions of the upper push rod 131 and the lower push rod 132. In this embodiment, the locking member 6 is rotatably mounted on the lower push rod 132. When the locking member 6 is in the locked state, it abuts against the upper push rod 131, thereby offsetting the radial clearance between the upper push rod 131 and the lower push rod 132 and preventing wobbling between them. Figures 1-3 As shown.

[0034] The push rod 13 can also be locked axially between the upper push rod 131 and the lower push rod 132 by an additional locking device, preventing them from sliding relative to each other. Only after the locking device 6 is unlocked can the additional locking device be unlocked, allowing the upper push rod 131 and the lower push rod 132 to slide relative to each other. This improves the safety performance of the stroller and prevents accidental unlocking of the lock between the upper push rod 131 and the lower push rod 132, thus preventing them from sliding relative to each other.

[0035] When the stroller is folded, the locking element 6 engages with the front support 11, thereby locking the positions of the front support 11 and the lower push rod 132, ensuring the stroller remains stably folded and does not unfold automatically. Figure 6 and Figure 7 As shown.

[0036] Specifically, the front bracket 11 is provided with a protrusion 113a, and the locking member 6 is provided with a recess 61 that mates with the protrusion 113a, such as... Figure 1 , Figure 2 , Figures 5-7 As shown. When the stroller is in the folded state, the locking member 6 is locked, at which time the protrusion 113a engages with the recess 61, thereby locking the positions of the front support 11 and the lower push rod 132, as shown. Figure 6 and Figure 7 As shown. When the locking member 6 rotates relative to the lower push rod 132 to unlock the locking member 6, the protrusion 113a can disengage from the recess 61. When the locking member 6 rotates relative to the lower push rod 132 to lock the locking member 6, the protrusion 113a can engage with the recess 61.

[0037] The stroller also includes a seat assembly, which is mounted on the stroller frame and is used by the child to sit in. Specifically, such as... Figure 2 and Figure 3 As shown, the seat assembly includes a seat 2 for a child to sit on, and the stroller also includes a linkage 3. The rear of the seat 2 is rotatably connected to the upper part of the front support 11. One end of the linkage 3 is rotatably connected to the upper part of the rear support 12, and the other end of the linkage 3 is rotatably connected to the front of the seat 2. Thus, a four-bar linkage is formed between the front support 11, the seat 2, the linkage 3, and the rear support 12. When the rear support 12 rotates relative to the front support 11, the seat 2 rotates synchronously relative to the front support 11. Therefore, when the stroller is unfolded or folded, the rotation of the rear support 12 causes the seat 2 to rotate relative to the front support 11 in conjunction with the rear support 12, eliminating the need for separate operation of rotating the seat 2 relative to the front support 11, making the folding and unfolding of the stroller convenient.

[0038] In this embodiment, a second connector 113 is fixedly mounted on the upper part of the front support rod 111, and a protrusion 113a is mounted on the second connector 113. The second connector 113 is located above the first connector 112. Connecting rods 3 are respectively mounted on the left and right sides. Third connectors 21 extending downwards from the bottom of the seat plate 2 are respectively mounted on the left and right sides of the front part of the seat plate 2, and a fourth connector 22 extending downwards from the bottom of the seat plate 2 is mounted in the middle of the rear part of the seat plate 2. The second connector 113 and the fourth connector 22 are rotatably connected. One end of each connecting rod 3 is rotatably connected to the upper part of the corresponding rear bracket 12, and the other end of the connecting rod 3 is rotatably connected to the corresponding third connector 21. Figure 2 and Figure 3 As shown.

[0039] like Figure 1 As shown, the stroller may also include a pull cord 7 and a cloth cover 8 disposed on the pull cord 7. The pull cord 7 is disposed between the seat plate 2 and the side rod 133b of the push handle 133.

[0040] The stroller also includes a first locking mechanism, which locks the relative positions of the front support 11 and the lower push rod 132 when the stroller frame is in the unfolded state. When the stroller is folded, the upper push rod 131 slides relative to the lower push rod 132, which unlocks the first locking mechanism. This makes unlocking the first locking mechanism convenient, requiring no separate operation, and facilitates the folding of the stroller. The specific structure of the first locking mechanism and the structure that unlocks it can both adopt structures from the prior art.

[0041] The stroller also includes a second locking mechanism. When the stroller frame is in the unfolded state, the second locking mechanism locks the relative positions of the front support 11 and the rear support 12, thereby locking the position of the four-bar linkage formed between the front support 11, the seat plate 2, the connecting rod 3, and the rear support 12. When the stroller is folded down, the push rod 132 slides relative to the front support 11, which unlocks the second locking mechanism. This makes unlocking the second locking mechanism convenient, requiring no separate operation, and facilitates the folding of the stroller. The specific structure of the second locking mechanism and the structure that drives the unlocking of the second locking mechanism can both adopt structures in the prior art.

[0042] In this embodiment, the stroller frame also includes a rear crossbar 14 connecting the lower parts of the rear supports 12 on the left and right sides. The front wheel assembly 4 is located between the rear wheel assemblies 5 on the left and right sides and in front of the rear crossbar 14. Preferably, the front wheel assembly 4 is rotatably mounted on the front support 11 about a pivot extending in the vertical direction. In this way, when the stroller is folded, the front wheel assembly 4 can rotate relative to the front support 11, so that the plane of the front wheel assembly 4 is approximately parallel to the central axis of the rear crossbar 14. This allows the front wheel assembly 4 to be closer to the rear crossbar 14, and the front support 11 to be more closely aligned with the rear support 12, thereby reducing the structural volume of the stroller after folding.

[0043] When the stroller is in the unfolded state, all locking components, the first locking mechanism, and the second locking mechanism on the push rod 13 are locked. Most of the upper push rod 131 extends from the upper end of the lower push rod 132's cavity to the outside of the lower push rod 132's cavity. Most of the lower push rod 132 extends from the upper end of the front support rod 111's cavity to the outside of the front support rod 111's cavity. The lower part of the lower push rod 132 is located inside the front support rod 111's cavity and does not extend outside. The pull rope 7 is taut, keeping the fabric cover 8 flat. Figures 1-3 As shown.

[0044] When the stroller is folded, the locks between the upper push rod 131 and the lower push rod 132 are fully unlocked, causing the upper push rod 131 to slide downwards until it is mostly retracted into the cavity of the lower push rod 132, simultaneously unlocking the first locking mechanism. The push rod assembly 13 slides downwards until the upper part of the push rod assembly 13 is mostly retracted into the cavity of the front support rod 111, simultaneously unlocking the second locking mechanism. This causes the rear support 12 to rotate forward and gradually approach the front support 11, pulling the seat plate 2 downwards via the connecting rod 3, gradually approaching the front support 11, and causing the front wheel assembly 4 to rotate relative to the front support 11 around the pivot extending vertically. During this process, the pull rope 7 gradually loosens. Figure 4 and Figure 5 As shown.

[0045] When the stroller is folded, the plane of the front wheel assembly 4 is approximately parallel to the central axis of the rear crossbar 14, causing the various rods that make up the stroller frame to be tightly close together. The lower part of the lower push rod 132 extends downwards to the outside of the cavity of the front support rod 111, allowing the lower part of the lower push rod 132, the front wheel assembly 4, and / or the rear wheel assembly 5 to jointly support the ground. This allows the stroller to stand upright on the ground after folding, facilitating its carrying and storage. In this embodiment, when the stroller is folded, the lowest point of the front wheel assembly 4 is located above the lowest point of the rear wheel assembly 5. The lower part of the lower push rod 132 and the left and right rear wheel assemblies 5 together support the ground. The left and right rear wheel assemblies 5 and the lower part of the lower push rod 132 are sequentially connected to form a triangular structure, resulting in good stability of the stroller after folding, allowing it to stand upright on the ground without easily tipping over. Figure 6 and Figure 7 As shown.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A children's stroller, characterized in that: The stroller includes a stroller frame with an unfolded state and a folded state. The stroller frame includes a front support, a rear support, and a push rod. The rear support is rotatably connected to the front support, and the push rod is slidably engaged with the front support. The stroller also includes a front wheel assembly located at the bottom of the front support and a rear wheel assembly located at the bottom of the rear support. When the stroller is in the folded state, the front support and the rear support are close together, the push rod slides downward and folds into the front support, and the push rod extends downward to the lower part of the front support so that the push rod, the front wheel assembly, and / or the rear wheel assembly are supported on the ground.

2. The stroller according to claim 1, characterized in that: The front wheel assembly is rotatably mounted at the bottom of the front support about a pivot extending vertically. When the stroller is folded, the bottom of the rear wheel assembly is located below the bottom of the front wheel assembly, and the lower part of the rear wheel assembly and the push rod are supported on the ground together.

3. The stroller according to claim 2, characterized in that: The front support and the push rod are both located in the middle of the stroller frame. The rear supports are located on the left and right sides of the stroller frame, and the rear wheel assemblies are located at the bottom of the rear supports on each side. When the stroller is folded, the rear wheel assemblies on the left and right sides and the lower part of the push rod together support the ground. The rear wheel assemblies on the left and right sides and the lower part of the push rod are connected sequentially to form a triangular structure.

4. The stroller according to claim 1, characterized in that: The push rod includes a lower push rod and an upper push rod. The upper push rod is slidably disposed on the lower push rod along the length extension direction of the lower push rod. The lower push rod is slidably disposed on the front bracket along the length extension direction of the front bracket. The push rod also includes a locking member for locking the relative positions of the upper push rod and the lower push rod.

5. The stroller according to claim 4, characterized in that: When the stroller is in a folded state, the locking device cooperates with the front bracket to lock the positions of the front bracket and the lower push rod.

6. The stroller according to claim 5, characterized in that: The front support has a protrusion, and the locking member has a recess that mates with the protrusion. When the stroller is folded, the protrusion engages with the recess. The locking member is rotatably mounted on the upper part of the lower push rod. The locking member can rotate relative to the lower push rod to engage the protrusion with the recess or disengage the protrusion from the recess.

7. The stroller according to claim 4, characterized in that: The stroller also includes a first locking mechanism for locking the relative position of the front support and the lower push rod when the stroller frame is in the unfolded state, and for unlocking the first locking mechanism when the stroller is folded and the upper push rod slides relative to the lower push rod. And / or, the stroller further includes a second locking mechanism for locking the relative positions of the front support and the rear support when the stroller frame is in the unfolded state, and for unlocking the second locking mechanism when the stroller folds down and slides relative to the front support.

8. The stroller according to claim 1, characterized in that: The front support has a cavity extending along its length, and the push rod is slidably disposed in the cavity along the length of the cavity, the bottom of the cavity being open; when the stroller is in the unfolded state, the lower part of the push rod is located in the cavity and does not extend to the outside of the cavity; when the stroller is in the folded state, the lower part of the push rod extends from the bottom of the cavity to the outside of the cavity.

9. The stroller according to claim 1, characterized in that: The stroller also includes a seat assembly and a connecting rod mounted on the stroller frame. The seat assembly includes a seat plate, the rear of which is rotatably connected to the upper part of the front support. One end of the connecting rod is rotatably connected to the upper part of the rear support, and the other end of the connecting rod is rotatably connected to the front of the seat plate.

10. The stroller according to claim 9, characterized in that: The stroller also includes a pull cord disposed between the upper part of the seat and the push rod, and a cloth cover disposed on the pull cord.

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