Baby stroller with foldable backrest

Abstract

The present invention provides a baby stroller with a backrest that can be linked and folded, comprising a frame that can be switched between an expanded state and a folded state and a support body arranged on the frame, the support body comprising a seat portion and a backrest portion that can be folded and expanded with each other, the seat portion and the backrest portion are synchronously expanded and folded with the frame, the backrest portion is provided with a bendable bending area, a connecting member with a flexible structure is connected between the backrest portion and the frame; the folding of the seat portion relative to the backrest portion causes the bending area to bend away from the ground by pulling the backrest portion by the connecting member, and the bending of the bending area shortens the distance between the upper edge and the lower edge of the backrest portion. The folding of the frame of the baby stroller with a backrest that can be linked and folded will drive the folding of the backrest portion, and the folding of the backrest portion avoids the end edge of the backrest portion from touching the ground, and the folding operation of the backrest portion is simple and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of baby carriages, and in particular relates to a baby carriage with a backrest that can be linked and folded. Background Art

[0002] Baby strollers are widely used in families with infants and young children. To make baby strollers more convenient to store and carry, most baby strollers currently include a frame that can be converted between a folded state and an unfolded state, so that the baby stroller can be folded into a smaller volume. However, most of the backrests of existing baby strollers are fixed, which makes the backrests non-foldable. Therefore, when the frame is folded, the end edge of the backrest will touch the ground. After touching the ground many times, the backrest of the baby stroller will become dirty, which will undoubtedly greatly reduce the user experience. Of course, some backrests are provided with multiple pivot structures in order to be foldable. This increases the complexity of the structure of the baby stroller and makes the folding operation of the backrest not smooth.

[0003] Therefore, it is necessary to provide a baby stroller with a backrest that can be folded in a linked manner to overcome the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The object of the present invention is to provide a baby stroller with a backrest that can be folded in a linked manner. The folding of the frame of the baby stroller with a backrest that can be folded in a linked manner will drive the folding of the backrest. The folding of the backrest avoids the end edge of the backrest from touching the ground. At the same time, the folding operation of the backrest is simple and convenient.

[0005] To achieve the above objectives, the present invention provides a baby stroller with a backrest that can be linked and folded, comprising a frame that can be switched between an expanded state and a folded state and a support body arranged on the frame, the support body comprising a seat portion and a backrest portion that can be folded and expanded with each other, the seat portion and the backrest portion can be expanded and folded synchronously with the frame, the backrest portion is provided with a bendable bending zone, and a connecting member with a flexible structure is connected between the backrest portion and the frame; the seat portion is folded relative to the backrest portion by pulling the backrest portion with the connecting member, so that the bending zone is bent away from the ground, and the bending of the bending zone shortens the distance between the upper edge and the lower edge of the backrest portion.

[0006] Compared with the prior art, the backrest portion of the baby stroller with a backrest that can be folded in linkage is provided with a bendable bending zone, and a connector with a flexible structure is connected between the backrest portion and the frame. When the frame of the baby stroller with a backrest that can be folded in linkage is folded, the seat portion and the backrest portion will be folded synchronously, and during this folding process, the connector connected between the frame and the backrest portion will pull the backrest portion so that the bending zone is bent away from the ground, thereby shortening the distance between the upper edge and the lower edge of the backrest portion, thereby achieving the folding of the backrest portion and avoiding the end edge of the backrest portion from touching the ground. It can be seen that the folding of the frame of the baby stroller with a backrest that can be folded in linkage of the present invention will drive the folding of the backrest portion, and the folding of the backrest portion avoids the end edge of the backrest portion from touching the ground, and at the same time, the folding operation of the backrest portion is simple and convenient.

[0007] Preferably, a connecting piece with a flexible structure is connected between the backrest portion of the present invention and the seat portion on the frame.

[0008] Preferably, a bending zone is formed between the upper edge and the lower edge of the backrest portion of the present invention. Specifically, a bending zone is formed in the central area of ​​the backrest portion of the present invention.

[0009] Preferably, the backrest portion of the present invention is divided into a backrest upper portion and a backrest lower portion by a bending zone, and the connecting piece is connected to the backrest lower portion.

[0010] Preferably, the backrest portion of the present invention includes a backrest plate and a backrest protective cover having a flexible structure, wherein the backrest protective cover is wrapped around the backrest plate.

[0011] Preferably, the backrest board of the present invention comprises an upper backrest board and a lower backrest board, the upper backrest board corresponds to the upper backrest portion, and the lower backrest board corresponds to the lower backrest portion.

[0012] Preferably, the backrest board of the present invention further comprises an unfolding and folding portion, and the upper backrest board and the lower backrest board are connected via the unfolding and folding portion.

[0013] Preferably, the unfolded and folded portion of the present invention forms a bending area.

[0014] Preferably, the upper backrest board and the lower backrest board of the present invention are connected in a bendable linkage via the unfolding and folding parts.

[0015] Preferably, the folding of the seat portion relative to the lower backrest board of the present invention drives the upper edge of the upper backrest board away from the ground through the linkage of unfolding the folding portion.

[0016] Preferably, the unfolding and folding portion of the present invention is a flexible structure.

[0017] Preferably, the unfolding and folding portion of the present invention is a folding structure.

[0018] Preferably, the unfolding and folding portion of the present invention is a linear structure that can be bent repeatedly.

[0019] Preferably, the connecting member of the present invention is connected to the backing plate by fusion welding.

[0020] Preferably, the connecting piece of the present invention is connected to the backrest protection cover by sewing or aluminum rivets.

[0021] Preferably, the connecting pieces of the present invention are symmetrically arranged on both sides of the backrest portion.

[0022] Preferably, the connecting member of the present invention is a webbing.

[0023] Preferably, the webbing of the present invention is fixedly connected to the seat portion by sewing or aluminum rivets.

[0024] Preferably, the webbing of the present invention is detachably connected to the seat portion by means of a male buckle and a female buckle that cooperate with each other.

[0025] Preferably, the upper backrest plate of the present invention is provided with shoulder strap holes for the shoulder straps of the five-point safety belt to pass through.

[0026] Preferably, two shoulder strap holes facing each other are respectively opened on both sides of the upper backrest plate of the present invention, and the upper end node of the shoulder strap can be adjusted arbitrarily between the upper and lower shoulder strap holes on the same side, which can adjust the height of the shoulder strap to be suitable for use by children of different heights.

[0027] Preferably, the bicycle frame of the present invention comprises a handrail, which is in a foldable shape, and the folded portion of the handrail corresponds to the bending area of ​​the backrest portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the baby stroller with a backrest that can be folded in a linked manner after being unfolded.

[0029] Figure 2 It is a schematic diagram of the structure of the baby stroller with a backrest that can be folded in a linked manner after being folded.

[0030] Figure 3 The figure is a schematic structural diagram of a backrest board of a baby stroller capable of being folded in a linked manner according to the present invention.

[0031] Figure 4a The schematic diagram is a schematic diagram of the seat and backrest of the baby stroller with a foldable backrest according to the present invention when the seat and backrest are unfolded.

[0032] Figure 4b The diagram is a principle diagram of the seat and backrest of the baby stroller with a foldable backrest in linkage with the present invention when the seat and backrest are folded.

[0033] Figure 5 The figure is a schematic structural diagram of an embodiment of the connection between a backrest plate and a connecting piece of the present invention. DETAILED DESCRIPTION

[0034] In order to explain the technical content, structural features and technical effects of the present invention in detail, the following is a detailed description in combination with the implementation methods and the accompanying drawings.

[0035] Please see Figure 1-Figure 2 The baby stroller 100 with a backrest that can be folded in a linked manner of the present invention comprises a frame 1 and a support body 2 disposed on the frame 1. The frame 1 is a folding structure, and the frame 1 can be switched between an unfolded state and a folded state. The support body 2 comprises a seat portion 21 and a backrest portion 22 that can be folded and unfolded with each other. The seat portion 21 and the backrest portion 22 are unfolded and folded synchronously with the frame 1, that is, the folding of the frame 1 will synchronously drive the seat portion 21 and the backrest portion 22 to fold. In order to allow the backrest portion 22 to be folded synchronously, a bendable bending area 221 is provided on the backrest portion 22, and a connector 3 with a flexible structure is connected between the backrest portion 22 and the frame 1. When the frame 1 of the baby stroller 100 with a backrest that can be folded in a linked manner of the present invention is folded, the seat portion 21 and the backrest portion 22 will be folded synchronously. During the folding process of the frame 1, the connecting member 3 connected between the frame 1 and the backrest portion 22 is stretched and pulled on the backrest portion 22. At the same time, the flexibility of the connecting member 3 allows the two ends of the connecting member 3 to adjust the corresponding adaptive shape during the folding process of the frame 1 at any angle; under the pulling of the connecting member 3, the backrest portion 22 will bend the bending area 221 of the backrest portion 22 away from the ground 4, thereby shortening the distance between the upper edge 2221 and the lower edge 2222 of the backrest portion 22 (in this application, the distance is denoted as 2221). Figure 1 The direction indicated by the arrow A is upward), that is, the backrest portion 22 is folded, and the distance between the upper edge 2221 of the folded backrest portion 22 and the ground 4 is as shown in FIG. Figure 2 As shown in FIG. 1 , the existence of the distance D prevents the upper edge 2221 of the backrest portion 22 from touching the ground. It can be seen that the folding of the frame 1 of the baby stroller 100 with a backrest that can be folded in conjunction with the backrest of the present invention will drive the folding of the backrest portion 22, and the folding of the backrest portion 22 prevents the upper edge 2221 of the backrest portion 22 from touching the ground. At the same time, the folding operation of the backrest portion 22 is simple and convenient.

[0036] Please continue to see Figure 1-Figure 2 In order not to affect the appearance of the baby stroller 100 with a foldable backrest, the connector 3 can be connected to the seat portion 21 on the frame 1, that is, a connector 3 with a flexible structure is connected between the backrest portion 22 and the seat portion 21 on the frame 1. Specifically, a bending area 221 is formed between the upper edge 2221 and the lower edge 2222 of the backrest portion 22. In order to make the bending area 221 of the backrest portion 22 easier to bend in a direction away from the ground 4, the central area of ​​the backrest portion 22 is preferably formed with the bending area 221. Figure 1The bending area 221 divides the backrest portion 22 into an upper backrest portion 222 and a lower backrest portion 223. The connector 3 can be connected to both the lower backrest portion 223 and the upper backrest portion 222. In order to make it easier for the connector 3 to pull the backrest portion 22 during the folding of the frame 1, thereby bending the bending area 221 in a direction away from the ground, the connector 3 is preferably connected to the lower backrest portion 223. Taking into account the riding comfort of the baby, the backrest portion 22 of the present invention needs to have good softness and comfort. Therefore, the backrest portion 22 of the present invention includes a backrest board 224 that plays a supporting role and a backrest protective cover 225 with a flexible structure. The backrest protective cover 225 is covered on the outside of the backrest board 224. At the same time, the folding of the backrest portion 22 is achieved by folding the backrest board 224. The following is achieved by Figure 3 The specific structure of the backrest plate 224 is further described in detail.

[0037] Please see Figure 3 The backrest plate 224 includes an upper backrest plate 2241 corresponding to the upper backrest portion 222 and a lower backrest plate 2242 corresponding to the lower backrest portion 223, and also includes an unfolding and folding portion 2243. The upper backrest plate 2241 and the lower backrest plate 2242 are connected together through the unfolding and folding portion 2243. In order to enable the backrest plate 224 to be folded in a linked manner when the frame 1 is folded, the unfolding and folding portion 2243 can be bent under force, so the upper backrest plate 2241 and the lower backrest plate 2242 are in a bendable linkage connection through the unfolding and folding portion 2243. When the backrest plate 224 is folded, the unfolding and folding portion 2243 will bend, that is, the unfolding and folding portion 2243 forms the bending area 221 of the backrest portion 22, so that the end of the upper backrest plate 2241 close to the unfolding and folding portion 2243 and the end of the lower backrest plate 2242 close to the unfolding and folding portion 2243 are both arched upward. In order to enable the unfolding and folding portion 2243 to bend under force, the unfolding and folding portion 2243 is preferably a flexible structure. Specifically, the unfolding and folding portion 2243 can be a crease structure or a linear structure that can be bent repeatedly. Figure 4a-4b The folding principle of the backrest plate 224 will be described in more detail.

[0038] Please see Figure 4a and Figure 4b ,exist Figure 4a When the frame 1 corresponding to the seat portion 21 and the backrest portion 22 is in an unfolded state, the Figure 4a When the directions of B1 and B2 correspond to the folding of the frame 1, the seat portion 21 and the backrest portion 22 are folded to present an Figure 4bfolded state. Specifically, the seat portion 21 moves in the direction indicated by the arrow B1, and the backrest portion 22 moves in the direction indicated by the arrow B2. Due to the pulling of the connecting member 3 on the lower backrest plate 2242, the end of the lower backrest plate 2242 close to the unfolding and folding portion 2243 is subjected to an upward pulling force F1, and at the same time, the upper backrest plate 2241 is subjected to its own downward gravity; during the folding process, the pulling force F1 causes the end of the lower backrest plate 2242 close to the unfolding and folding portion 2243 to be lifted up, and further, the end of the upper backrest plate 2241 away from the unfolding and folding portion 2243 is lowered under the action of its own gravity, and the end of the upper backrest plate 2241 close to the unfolding and folding portion 2243 is also lifted up, which causes the unfolding and folding portion 2243 to bend, and the bending direction is away from the ground 4; when the frame 1 is folded, the seat portion 21 and the backrest portion 22 are also folded (as shown in FIG. Figure 4b As shown in the figure, the included angle between the seat portion 21 and the backrest portion 22 changes from C1 before folding to C2. It can be seen that the included angle C2 is smaller than C1. The bend formed at the unfolding and folding portion 2243 causes the backrest portion 22 to be arched at the unfolding and folding portion 2243. The arch shortens the distance between the upper edge 2221 and the lower edge 2222 of the backrest portion 22, thereby realizing the folding of the backrest portion 22 and preventing the upper edge 2221 of the backrest portion 22 from touching the ground.

[0039] Please continue to see Figure 1 In order to make the backrest portion 22 receive a uniform pulling force from the connecting member 3, the connecting member 3 of the present invention is preferably symmetrically arranged on both sides of the backrest portion 22. The backrest protection cover 225 of the present invention may include a first backrest protection cover that is in direct contact with the baby, see Figure 5 The backrest protective cover 225 of the present invention may also include a second backrest protective cover 2251. The backrest board 224 may be directly covered with the second backrest protective cover 2251, and then the backrest board 224 covered with the second backrest protective cover 2251 is embedded in the first backrest protective cover. The connector 3 and the second backrest protective cover 2251 may be connected by sewing or aluminum rivets, or by fasteners. Of course, the backrest board 224 of the present invention does not need to be covered with the second backrest protective cover 2251, and the connector 3 may be connected to the backrest board 224 by fusion welding. Specifically, the connector 3 of the present invention may preferably be a webbing, and the webbing and the seat portion 21 may be fixedly connected by sewing or aluminum rivets. Of course, the webbing and the seat portion 21 may also be detachably connected by a male buckle and a female buckle that cooperate with each other.

[0040] Please see Figure 1-Figure 3The upper backrest plate 2241 of the present invention is provided with shoulder strap holes 2245 for the shoulder strap 5 of the five-point safety belt to pass through. Preferably, two shoulder strap holes 2245 facing each other are respectively provided on both sides of the upper backrest plate 2241. The upper end node of the shoulder strap 5 can be adjusted arbitrarily between the upper and lower shoulder strap holes 2245 on the same side, thereby adjusting the height of the shoulder strap 5 to be suitable for use by children of different heights. Preferably, the frame 1 of the present invention includes a handrail 11, and the handrail 11 is in a folded shape. The folded part of the handrail 11 corresponds to the bending area 221 of the backrest portion 22, which can make the bending area 221 of the folded backrest portion 22 be pressed by the handrail 11, thereby further ensuring that the upper edge 2221 of the backrest portion 22 does not touch the ground.

[0041] Please continue to see Figure 1-Figure 3 , Figure 4a-4b The backrest portion 22 of the baby stroller 100 with a backrest that can be linked and folded of the present invention includes a backrest board 224, and the backrest board 224 includes an upper backrest board 2241, a lower backrest board 2242 and an unfolding and folding portion 2243. The unfolding and folding portion 2243 can be bent when subjected to force, and the upper backrest board 2241 and the lower backrest board 2242 are connected in a bendable linkage through the unfolding and folding portion 2243. A connecting member 3 with a flexible structure is connected between the lower backrest board 2242 and the seat portion 21. When the frame 1 of the baby stroller 100 with a backrest that can be linked and folded is folded, the seat portion 21 and the backrest portion 22 are folded synchronously. During this folding process, the connecting member 3 connected between the seat portion 21 and the lower backrest plate 2242 will pull the lower backrest plate 2242 to bend the unfolding and folding portion 2243 in a direction away from the ground 4, thereby causing one end of the upper backrest plate 2241 close to the unfolding and folding portion 2243 and one end of the lower backrest plate 2242 close to the unfolding and folding portion 2243 to be lifted, thereby shortening the distance between the upper edge 2221 and the lower edge 2222 of the backrest portion 22, thereby achieving folding of the backrest portion 22 and preventing the upper edge 2221 of the backrest portion 22 from touching the ground. It can be seen that the folding of the frame 1 of the baby stroller 100 with a foldable backrest of the present invention will drive the folding of the backrest 22, and the folding of the backrest 22 avoids the end edge of the backrest 22 touching the ground. At the same time, the folding operation of the backrest 22 is simple and convenient, and is suitable for wide promotion and application.

[0042] It is worth noting that the specific structure and folding function of the frame 1 of the baby stroller 100 that can be folded in a linked manner with a backrest according to the present invention are well known to those skilled in the art and will not be described in detail herein.

[0043] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A baby stroller with a backrest that can be folded and linked, comprising a frame that can be switched between an expanded state and a folded state and a support body arranged on the frame, the support body comprising a seat portion and a backrest portion that can be folded and expanded with each other, the seat portion and the backrest portion are synchronously expanded and folded with the frame, characterized in that: The backrest portion is provided with a bendable bending zone, the bending zone divides the backrest portion into an upper backrest portion and a lower backrest portion, and a connecting member with a flexible structure is connected between the lower backrest portion and the frame; The folding of the seat portion relative to the backrest portion generates an upward pulling force on one end of the lower portion of the backrest close to the bending zone by the pulling of the connecting piece on the lower portion of the backrest, and at the same time, the upper portion of the backrest is subjected to its own downward gravity, so that during the folding process, one end of the upper portion of the backrest close to the bending zone and one end of the lower portion of the backrest close to the bending zone are both arched upward, and the bending zone is bent away from the ground. The bending of the bending zone shortens the distance between the upper edge and the lower edge of the backrest, and the angle between the seat portion and the lower portion of the backrest changes from a first angle before folding to a second angle, and the second angle is smaller than the first angle.

2. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: A connecting piece with a flexible structure is connected between the lower part of the backrest and the seat part on the frame.

3. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: The bending area is formed between the upper edge and the lower edge of the backrest portion.

4. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: The backrest portion includes a backrest plate and a backrest protective cover with a flexible structure, and the backrest protective cover is covered outside the backrest plate.

5. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 4, characterized in that: The backrest plate includes an upper backrest plate and a lower backrest plate, wherein the upper backrest plate corresponds to the upper backrest portion, and the lower backrest plate corresponds to the lower backrest portion.

6. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 5, characterized in that: The backrest board also includes an unfolding and folding portion, and the upper backrest board and the lower backrest board are connected via the unfolding and folding portion.

7. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 6, characterized in that: The unfolding and folding portion forms the bending area.

8. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 6, characterized in that: The upper backrest plate and the lower backrest plate are connected in a bendable linkage via the unfolding and folding portion.

9. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 8, characterized in that: The folding of the seat portion relative to the lower backrest plate drives the upper edge of the upper backrest plate away from the ground through the linkage of the unfolding and folding portion.

10. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 6, characterized in that: The unfolding and folding portion is a flexible structure.

11. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 10, characterized in that: The unfolding and folding portion is in a folding structure.

12. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 10, characterized in that: The unfolding and folding portion is a linear structure that can be bent repeatedly.

13. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 4, characterized in that: The connecting member is connected to the backing plate by fusion welding.

14. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 4, characterized in that: The connecting piece is connected to the backrest protection cover by sewing or aluminum rivets.

15. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: The connecting members are symmetrically arranged on both sides of the backrest portion.

16. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: The connecting piece is a webbing.

17. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 16, characterized in that: The webbing is fixedly connected to the seat portion by sewing or aluminum rivets.

18. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 16, characterized in that: The webbing is detachably connected to the seat portion by means of a male buckle and a female buckle that cooperate with each other.

19. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 5, characterized in that: The upper backrest plate is provided with shoulder strap holes for the shoulder straps of the five-point safety belt to pass through.

20. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 19, characterized in that: Two shoulder strap holes facing each other are respectively provided on both sides of the upper backrest plate, and the upper end node of the shoulder strap can be adjusted arbitrarily between the upper and lower shoulder strap holes on the same side.

21. The baby stroller with a backrest that can be folded in a linked manner as claimed in claim 1, characterized in that: The frame comprises a handrail, which is in a folding shape, and the folding portion of the handrail corresponds to the bending area of ​​the backrest portion.

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