Baby carriage

Abstract

A baby carriage comprises a connecting seat which comprises a first connecting rod and a second connecting rod which are in relative pivot connection; the armrest folding mechanism comprises a locking piece, a pushing piece and a driving gear, and the driving gear is connected with the locking piece and the pushing piece so as to push the locking piece and the pushing piece to move in opposite directions; the locking piece of the armrest folding mechanism can be locked on the armrest or unlocked from the armrest, and when the second connecting rod is folded relative to the first connecting rod, the pushing piece is triggered to act, so that the armrest is unlocked by the locking piece. According to the baby carriage, the handrail can be folded along with the folding of the second connecting rod relative to the first connecting rod, so that the use convenience is greatly improved.

Description

[0001] This application is a divisional application of the application whose applicant is "Mingmen Switzerland Co., Ltd.", whose application date is November 13, 2020, whose application number is 202011269204.7, and whose invention name is "Armrest folding mechanism and baby stroller". Technical Field

[0002] The present application relates to an armrest folding mechanism and a baby stroller, wherein the baby stroller comprises the armrest folding mechanism. Background Art

[0003] Baby strollers can relieve the fatigue caused by holding a baby for a long time, and improve the comfort of people's lives. In addition, in order to facilitate carrying when going out, baby strollers are usually foldable, and the main structure of the frame can be folded to reduce the volume and thus be easy to carry.

[0004] For example, the prior art discloses a folding mechanism for a baby stroller, wherein the frame of the baby stroller includes a front foot, a rear foot, and a rider that are pivotally connected to each other, the front wheel is mounted on the front foot, and the rear wheel is mounted on the rear foot, so that the unfolded frame can stand on the ground and walk on the ground. The rider rotates and folds relative to the rear foot during the folding process of the frame, so when the user applies a downward force to the rider, the rider can rotate and fold relative to the rear foot. During the unfolding process of the frame, the rider is pulled forward and upward, and the rider drives the armrest connecting seat to overcome the obstruction of the elastic convex provided at the rear foot fixing seat and pass over the elastic convex, thereby realizing the unfolding of the frame.

[0005] However, although the baby stroller disclosed in the above-mentioned prior art can realize the folding and folding of the main frame through the folding mechanism, in the folded and folded state of the baby stroller, the armrests held by the baby are still locked and cannot be folded, so the volume of the baby stroller in the folded and folded state cannot be effectively reduced.

[0006] For another example, the prior art also discloses a folding armrest folding device for a foldable baby stroller, wherein the armrest connecting seat comprises a connecting seat body and a linking piece pivotally connected to the lower joint and capable of rotating relative to the lower joint around a pivot axis, and a pin with a circumferential texture passes through the armrest body and the linking piece and is fixed to an axis hole seat on the lower joint, so that the armrest body and the linking piece can rotate synchronously with the textured pin as the axis. The armrest connecting seat also has a through guide groove and a guide pin. A through guide groove is formed on the linkage and is located above the pivot point of the pin. One end of the guide pin passes through the through guide groove and is fixed to the upper joint, and the other end has an end portion with a diameter greater than the width of the through guide groove, so that the guide pin can move in the through guide groove. When the upper joint and the lower joint rotate relative to each other, the guide pin fixed to the upper joint can move in the through guide groove, causing the linkage and the connecting seat body to rotate synchronously with the upper joint around the pin, and also causing the armrest connecting seat to rotate a predetermined angle relative to the upper joint and the lower joint. Therefore, the armrest connecting seat and the armrest assembled thereon can be linked and retracted to a required position relative to the relative rotation of the push rod and the foot rod.

[0007] However, the above-mentioned baby stroller armrest folding mechanism still has the problems of complex structure, difficult assembly and laborious folding operation. Summary of the invention

[0008] In view of this, the purpose of the present application is to provide an armrest folding mechanism and a baby stroller including the armrest folding mechanism, wherein the armrest can be folded as the backrest support or the frame is folded relative to the seat support, thereby greatly improving the convenience of use.

[0009] To this end, according to a scheme of the present application, a baby stroller is provided, comprising: a connecting seat, the connecting seat comprising a first connecting rod and a second connecting rod pivotally connected to each other; an armrest folding mechanism, the armrest folding mechanism comprising a locking member, a pushing member and a driving gear, the driving gear being respectively connected to the locking member and the pushing member to push the locking member and the pushing member to move in opposite directions; and an armrest, the locking member of the armrest folding mechanism being able to lock to or unlock from the armrest, wherein when the second connecting rod is folded relative to the first connecting rod, the pushing member is triggered to act so that the locking member unlocks the armrest.

[0010] According to one embodiment, the baby stroller also includes an elastic element, and the locking member is pressed against the connecting seat through the elastic element. When the second connecting rod is folded relative to the first connecting rod, the elastic element is in a compressed state. When the second connecting rod is unfolded relative to the first connecting rod, the elastic element prompts the locking member to lock the armrest.

[0011] According to one embodiment, the locking member includes a locking end and a connecting end, and a first rack portion located between the locking end and the connecting end, the locking end can lock the armrest or unlock the armrest, and the first rack portion is provided with a first tooth structure.

[0012] According to one embodiment, the pushing member includes a pushing end and a second rack portion, the second rack portion is provided with a second tooth structure, and when the second connecting rod is folded relative to the first connecting rod, the pushing end moves under the pushing action of the second connecting rod.

[0013] According to an embodiment, the armrest is provided with a locking hole, and the locking end of the locking member is releasably engaged with the locking hole, so that the armrest can be locked or unlocked.

[0014] According to an embodiment, the cross section of the locking end of the locking member is non-circular, and the cross section of the locking hole of the handrail has a shape matching the cross section of the locking end.

[0015] According to an embodiment, the second connecting rod is connected to the frame of the baby stroller, or the second connecting rod is connected to the frame of the baby stroller via a cross bar.

[0016] According to an embodiment, the second connecting rod is provided with a driving member, and the driving member pushes the pushing member when the second connecting rod is folded relative to the first connecting rod.

[0017] According to one embodiment, the baby stroller further comprises: a seat support connected to the first connecting rod; a backrest support pivotally connected to the seat support, and the second connecting rod is connected to the backrest support.

[0018] According to one embodiment, the armrest folding mechanism is connected above the first connecting rod and is arranged parallel to the first connecting rod.

[0019] In addition, according to one aspect of the present application, there is provided an armrest folding mechanism, which is pivotally connected to an armrest and connected to a first connecting rod of a connecting seat, and is used to make the armrest fold as the second connecting rod of the connecting seat is folded relative to the first connecting rod, including: a locking member, including a locking end and a connecting end, and a first rack portion located between the locking end and the connecting end, the locking end can be releasably engaged with the armrest, and the first rack portion is provided with a first tooth structure; a pushing member, including a pushing end and a second rack portion, the second rack portion is provided with a second tooth structure, the second tooth structure and the first tooth structure are arranged opposite to each other, and the pushing end moves under the pushing action of the second connecting rod; an elastic element, including a first end and a second end opposite to each other, the first end is connected to the connecting end, and the second end abuts against the connecting seat; and a driving gear engaged with the first tooth structure and the second tooth structure.

[0020] Preferably, the first rack portion is formed as a first frame, the first frame has an upper edge and a lower edge arranged parallel to each other, and the first tooth structure is arranged on the inner side of at least one of the upper edge and the lower edge of the first frame; the second rack portion is formed as a second frame, the second frame has an upper edge and a lower edge arranged parallel to each other, and the second tooth structure is arranged on the inner side of at least one of the upper edge and the lower edge of the second frame; the driving gear is penetrated through the first frame and the second frame to engage with the first tooth structure and the second tooth structure.

[0021] Preferably, the first tooth structure is arranged on the inner side of the upper edge of the first frame, and the second tooth structure is arranged on the inner side of the lower edge of the second rectangular frame; or the first tooth structure is arranged on the inner side of the lower edge of the first frame, and the second tooth structure is arranged on the inner side of the upper edge of the second frame.

[0022] Preferably, the first frame and / or the second frame is rectangular.

[0023] Preferably, the second connecting rod of the connecting seat is provided with a driving member, and the driving member pushes the pushing end when the second connecting rod is folded relative to the first connecting rod.

[0024] Preferably, the pushing end is provided with a guide surface for guiding the pushing of the driving member.

[0025] Preferably, the armrest is provided with a locking hole, and the locking end is releasably engaged with the locking hole.

[0026] Preferably, the cross section of the locking end of the locking member is non-circular, and the cross section of the locking hole of the handrail has a shape matching the cross section of the locking end.

[0027] According to another aspect of the present application, a baby stroller is provided, comprising: a frame forming the main frame structure of the baby stroller; a connecting seat, the connecting seat comprising a first connecting rod and a second connecting rod pivotally connected to each other, thereby allowing the second connecting rod to be folded and unfolded relative to the first connecting rod; a seat bracket, the two ends of the seat bracket are respectively connected to the first connecting rod of the connecting seat; an armrest folding mechanism connected to the first connecting rod; and an armrest, the armrest being pivotally connected to the armrest folding mechanism so that the armrest is folded as the second connecting rod of the connecting seat is folded relative to the first connecting rod.

[0028] Preferably, the second connecting rod is connected to the frame of the baby carriage, and more preferably, the second connecting rod is connected to the frame of the baby carriage via a cross bar.

[0029] Preferably, the baby carriage further comprises a backrest support pivotally connected to the seat support, and the second connecting rod is connected to the backrest support.

[0030] In the armrest folding mechanism according to the present application and the baby stroller including the armrest folding mechanism, the armrest can be folded as the backrest support or the frame is folded relative to the seat support, avoiding the cumbersome operation of separately folding the armrests in the prior art, greatly improving the convenience of use, and the armrest folding mechanism according to the present application also has the advantages of simple structure, easy assembly, and labor-saving folding and folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Those skilled in the art will appreciate that the drawings are primarily for illustrative purposes and are not intended to limit the scope of the inventive subject matter described herein. The drawings are not necessarily drawn to scale; in some cases, various aspects of the inventive subject matter disclosed herein may be exaggerated or enlarged in the drawings to facilitate understanding of different features. In the drawings, the same reference numerals generally refer to the same features (e.g., functionally similar and / or structurally similar elements).

[0032] In the attached figure:

[0033] Figure 1 is a schematic diagram of a baby stroller with an armrest folding mechanism according to the present application;

[0034] Figure 2 is a schematic diagram of a main frame structure of a baby stroller with an armrest folding mechanism according to the present application in an unfolded state;

[0035] Figure 3 is a schematic diagram of a main frame structure of a baby stroller with an armrest folding mechanism according to the present application in a semi-folded state;

[0036] Figure 4is a schematic diagram of a main frame structure of a baby stroller with an armrest folding mechanism according to the present application in a folded state;

[0037] Figure 5 is a schematic diagram showing an armrest folding mechanism according to the present application;

[0038] Figure 6 is another schematic diagram showing the armrest folding mechanism according to the present application;

[0039] Figure 7 is a schematic diagram showing the armrest folding mechanism according to the present application in an unfolded state;

[0040] Figure 8 is a schematic diagram showing the armrest folding mechanism according to the present application beginning to enter a folding state; and

[0041] Fig. 9 is a schematic diagram of a baby stroller with an armrest folding mechanism according to another embodiment of the present application.

[0042] List of reference numerals:

[0043] 10: Frame

[0044] 12 crossbars

[0045] 20: Back support

[0046] 30: Seat bracket

[0047] 40: Connecting seat

[0048] 42 first connecting rod 44 second connecting rod

[0049] 441 drive parts

[0050] 60: Armrest

[0051] 62 locking holes

[0052] 70: Armrest folding mechanism

[0053] 71 Housing

[0054] 72 locking parts

[0055] 721 locking end 722 connecting end 723 first rack portion 7231 first tooth structure 74 pushing member

[0056] 741 Push end 7411 Guide surface

[0057] 742 second rack portion 7421 second tooth structure

[0058] 76 Elastic element

[0059] 761 first end 762 second end

[0060] 78 Drive gear

[0061] 781 Axis DETAILED DESCRIPTION

[0062] The accompanying drawings and example embodiments described below are not meant to limit the scope of the present embodiment to a single embodiment. Its embodiments can be realized by making some or all of the described or illustrated elements interchangeable. In addition, in the case where some elements of the disclosed exemplary embodiments can be implemented partially or entirely using known components, in some cases, only those parts of such known components necessary for understanding the present embodiment are described, and detailed descriptions of other parts of these known components are omitted to avoid blurring the present embodiment.

[0063] The armrest folding mechanism according to the present application can be applied to a variety of facilities, such as child car safety seats, children's dining chairs, etc. For the purpose of simplicity, the following embodiments are described by taking the armrest folding mechanism applied to a baby stroller as an example.

[0064] like Figure 1 As shown, the figure schematically shows a baby stroller according to the present application, and for the convenience of explanation, the figure only shows the frame structure of the baby stroller, which mainly includes a frame 10 constituting the main structure of the baby stroller, and a backrest bracket 20 and a seat bracket 30. The backrest bracket 20 and the seat bracket 30 together constitute an accommodating space for accommodating a baby. In addition, in order to improve the comfort and safety of the baby, a handrail 60 is also provided for the baby to hold when riding in the baby stroller.

[0065] The baby stroller is usually foldable so that it can be folded when needed and unfolded for the baby to sit in when in use. Figure 2 As schematically shown in the figure, the backrest bracket 20 and the seat bracket 30 are pivotally connected through a connecting seat 40. Specifically, the connecting seat 40 includes a first connecting rod 42 and a second connecting rod 44 that are pivotally connected. The first connecting rod 42 is connected to the seat bracket 30, and the second connecting rod 44 is connected to the backrest bracket 20. Preferably, the first connecting rod 42 is fixedly connected to the seat bracket 30, and the second connecting rod 44 is fixedly connected to the backrest bracket 20. The backrest bracket 20 can be in a folded or unfolded state relative to the seat bracket 30. In another embodiment, the seat bracket 30 is slidably connected to the first connecting rod 42, and the backrest bracket 20 is slidably connected to the second connecting rod 44. Figure 2 The backrest bracket 20 is shown in a schematic diagram relative to the seat bracket 30 in an unfolded state. In the unfolded state, the backrest bracket 20 and the seat bracket 30 form an angle of approximately 90 degrees. The above angle values ​​are only for example, and the present application is not limited to the angles shown in this example. Please also refer to Figure 3 and Figure 4 , which respectively show schematic diagrams of the main frame structure of the baby stroller according to the present application in a semi-folded and folded state, and the angle between the backrest support 20 and the seat support 30 can be continuously reduced as the folding state deepens. Figure 4 In the fully folded state shown, the backrest support 20 is completely folded relative to the seat support 30, and the angle between the two is close to 0 degrees, thereby greatly reducing the size of the baby stroller and making it easier to carry outside.

[0066] The baby stroller according to the present application is also provided with an armrest folding mechanism 70, and the two ends of the armrest 60 are respectively pivotally connected to the two armrest folding mechanisms 70, so that the armrest 60 can be unlocked as the backrest bracket 20 is folded relative to the seat bracket 30, thereby automatically folding, greatly improving the convenience of the folding operation. Although it is preferred to provide two armrest folding mechanisms 70 in terms of balance and stability, only one armrest folding mechanism 70 according to the present application can also be provided.

[0067] The following will refer to Figure 5 The specific structure of the armrest folding mechanism 70 according to the present application is described in detail. The armrest folding mechanism 70 can be symmetrically arranged at both ends of the armrest 60, and the armrest folding mechanism 70 is connected to the first connecting rod 42 of the connecting seat 40. The following description is based on the example of the armrest folding mechanism 70 being fixedly connected to the first connecting rod 42 of the connecting seat 40. The following description is based on the example of the armrest folding mechanism 70 arranged on one side. Figure 5 As shown, the armrest folding mechanism 70 includes a locking member 72, a pushing member 74, an elastic element 76 and a driving gear 78. Figure 6 As shown, the locking member 72 includes a locking end 721, a connecting end 722, and a first rack portion 723 located between the locking end 721 and the connecting end 722, and the first rack portion 723 is provided with a first tooth structure 7231. The locking end 721 of the locking member 72 can be releasably locked to the armrest 60, for example, it can be releasably locked in the locking hole 62 of the armrest 60 (such as Figure 6 ), the connecting end 722 of the locking member 72 is connected to the first end 761 of the elastic element 76, and the second end 762 of the elastic element 76 abuts against the connecting seat 40. The first rack portion 723 located between the locking end 721 and the connecting end 722 can be in various forms, such as a rack shape. In the embodiment shown in the drawings, the first rack portion 723 is in a frame form. Although a rectangular frame form is shown in this embodiment, other frame forms can also be used. In addition, as shown in FIG. Figure 6As shown, the frame of the first rack portion 723 has an upper edge and a lower edge arranged parallel to each other, and the first tooth structure 7231 is arranged on the upper edge of the frame. Of course, the first tooth structure 7231 can also be arranged on both the upper edge and the lower edge of the frame; or the first tooth structure 7231 is only arranged on the lower edge of the frame.

[0068] In addition, the cross section of the locking end 721 of the locking member 72 is non-circular, for example, Figure 6 , and accordingly, the cross section of the locking hole 62 of the handrail 60 has a shape that matches the cross section of the locking end 721, for example, Figure 6 The matching of the rectangular, non-circular cross-section shown in FIG. 7 reduces rotation about the axis, thereby making the engagement of the locking member 72 with the armrest 60 more secure.

[0069] The push member 74 of the armrest folding mechanism 70 includes a push end 741 and a second rack portion 742 disposed at opposite ends thereof. The second rack portion 742 can be in various forms, such as a rack shape. In the embodiment shown in the drawings, the second rack portion 742 is in a frame form. Although a rectangular frame form is shown in this embodiment, other shapes of frames can also be used. In addition, as shown in FIG. Figure 6 As shown, the frame of the second rack portion 742 has an upper edge and a lower edge arranged parallel to each other, and the second tooth structure 7421 is arranged on the upper edge of the frame. Of course, the second tooth structure 7421 can also be arranged on both the upper edge and the lower edge of the frame; or the second tooth structure 7421 is only arranged on the lower edge of the frame. Accordingly, the teeth of the first tooth structure 7231 or the second tooth structure 7421 can be trapezoidal, triangular or circular.

[0070] The driving gear 78 is connected to the locking member 72 and the pushing member 74 respectively, and pushes the locking member 72 and the pushing member 74 to move in opposite directions, for example, Figure 6 It can be seen that the driving gear 78 pushes the locking member 72 and the pushing member 74 to move to the right and left respectively. The driving gear 78 is arranged in the frame structure of the first rack portion 723 and the frame structure of the second rack portion 742, so as to be meshed with the first tooth structure 7231 and the second tooth structure 7421 at the same time. Therefore, if the first tooth structure 7231 is arranged at the upper edge of the frame structure of the first rack portion 723, the second tooth structure 7421 is correspondingly arranged at the lower edge of the frame structure of the second rack portion 742; and if the first tooth structure 7231 is arranged at the lower edge of the frame structure of the first rack portion 723, the second tooth structure 7421 is correspondingly arranged at the upper edge of the frame structure of the second rack portion 742.

[0071] The shaft 781 of the driving gear 78 is fixed in the housing 71 of the armrest folding mechanism 70, and the locking member 72 and the pushing member 74 are positioned by the driving gear 78 passing through the housing 71, and the locking end 721 of the locking member 72 can be releasably engaged with the armrest 60. The armrest 60 has a locking hole 62, and the locking end 721 can be releasably engaged with the locking hole 62. In one embodiment, in the unfolded state, at least part of the locking end 721 is located in the locking hole 62. The connecting end 722 of the locking member 72 is pressed against the connecting seat 40 through the elastic component 76.

[0072] The following will refer to Figure 7 and Figure 8 The operation process of the armrest folding mechanism 70 according to the present application is described. Figure 7 Schematically shows a schematic diagram of the armrest folding mechanism 70 according to the present application when it is in an unfolded state; Figure 8 The schematic diagram of the armrest folding mechanism 70 according to the present application when it begins to enter the folding state is schematically shown. As described above, the connecting seat 40 includes a first connecting rod 42 and a second connecting rod 44 that are pivotally connected, the first connecting rod 42 is fixed to the seat support 30, and the second connecting rod 44 is fixed to the backrest support 20, so that the backrest support 20 can be pivotally rotated relative to the seat support 30. The second connecting rod 44 of the connecting seat 40 is also provided with a driving member 441. When the backrest support 20 is pivotally folded relative to the seat support 30, that is, as the angle θ between the backrest support 20 and the seat support 30 gradually decreases, the driving member 441 begins to contact and push the pushing member 74. Preferably, the pushing end 741 of the pushing member 74 is provided with a guiding surface 7411, and the guiding surface 7411 is, for example, an inclined surface, so as to increase the contact area between the driving member 441 and the pushing end 741, so that the driving member 441 can push the pushing member 74 more easily. The pushing member 74 starts to move toward one side of the armrest 60 under the action of the driving member 441. Since the driving gear 78 is meshed with the first tooth structure 7231 and the second tooth structure 7421 at the same time, the second tooth structure 7421 pushes the driving gear 78 to start rotating as the pushing member 74 moves. The rotating driving gear 78 pushes the locking member 72 to start moving toward one side of the backrest bracket 20 via the first tooth structure 7231. Figure 6 As shown, the locking end 721 of the locking member 72 gradually disengages from the locking hole 62 of the armrest 60 , thereby unlocking the armrest 60 , so that the armrest 60 can be folded toward the backrest bracket 20 .

[0073] During the process of folding and retracting the armrest 60 toward the backrest bracket 20, the locking member 72 moves toward one side of the backrest bracket 20, pressing the elastic element 76 so that the elastic element 76 is in a compressed state. Therefore, on the other hand, when the backrest bracket 20 is in an unfolded state relative to the seat bracket 30, the elastic force of the elastic element 76 can cause the locking member 72 to move toward one side of the armrest 60 and re-fit with the locking hole 62 of the armrest 60, thereby re-achieving the locking state of the armrest 60.

[0074] In the above embodiment, the second connecting rod 44 of the connecting seat 40 is connected to the backrest support 20 of the baby carriage. Fig. 9 In the baby stroller with an armrest folding mechanism according to another embodiment shown in FIG, the backrest bracket 20 is not provided, which can make the baby stroller lighter and reduce the cost. Fig. 9 In the illustrated embodiment, the second connecting rod 44 of the connecting seat 40 is connected to the frame 10 via a cross bar 12. For example, the cross bar 12, the second connecting rod 44 and the frame 10 are all fixedly connected. When the frame 10 is folded relative to the seat bracket 30, the second connecting rod 44 is linked to the frame 10, and the driving member 441 drives the armrest folding mechanism 70. The armrest 60 can also be folded accordingly through the action of the armrest folding mechanism 70. Of course, the second connecting rod 44 of the connecting seat 40 can be directly connected to the frame 10 without the cross bar 12. The specific structure of the armrest folding mechanism 70 and the folding, folding and unfolding locking states are the same as those of the aforementioned embodiment, and will not be repeated here.

[0075] The armrest folding mechanism 70 according to the present application allows the armrest 60 to fold along with the folding of the backrest bracket 20 or the frame 10 relative to the seat bracket 30, and locks the armrest 60 again when the backrest bracket 20 or the frame 10 is unfolded again relative to the seat bracket 30. Therefore, the convenience of the folding operation is greatly improved. In addition, the armrest folding mechanism 70 according to the present application uses gear transmission to achieve unlocking, so it also has the advantages of simple structure, easy assembly, and labor-saving folding and folding.

[0076] The description provided herein describes various features with the aid of its preferred and exemplary embodiments. A person skilled in the art will be able to make many other embodiments, modifications and variations within the scope and spirit of the appended claims after reading this description.

Claims

1. A baby stroller, comprising: A connecting seat, the connecting seat comprising a first connecting rod and a second connecting rod which are relatively pivotally connected; An armrest folding mechanism, the armrest folding mechanism comprising a locking member, a pushing member and a driving gear, the driving gear being connected to the locking member and the pushing member respectively to push the locking member and the pushing member to move in opposite directions; as well as an armrest, wherein the locking member of the armrest folding mechanism can be locked to or unlocked from the armrest, When the second connecting rod is folded relative to the first connecting rod, the pushing member is triggered to move so that the locking member unlocks the armrest.

2. The baby stroller according to claim 1, wherein: The baby stroller also includes an elastic element, through which the locking member is pressed against the connecting seat. When the second connecting rod is folded relative to the first connecting rod, the elastic element is in a compressed state. When the second connecting rod is unfolded relative to the first connecting rod, the elastic element prompts the locking member to lock the armrest.

3. The baby stroller according to claim 1, wherein: The locking member comprises a locking end and a connecting end, and a first rack portion located between the locking end and the connecting end, wherein the locking end can be locked to the armrest or unlock the armrest, and a first tooth structure is provided on the first rack portion.

4. The baby stroller according to claim 1, wherein: The pushing member includes a pushing end and a second rack portion, the second rack portion is provided with a second tooth structure, and when the second connecting rod is folded relative to the first connecting rod, the pushing end moves under the pushing action of the second connecting rod.

5. The baby stroller according to claim 1, wherein: The armrest is provided with a locking hole, and the locking end of the locking member is releasably engaged with the locking hole, so that the armrest can be locked or unlocked.

6. The baby stroller according to claim 5, wherein: The cross section of the locking end of the locking piece is non-circular, and the cross section of the locking hole of the handrail has a shape matching the cross section of the locking end.

7. The baby stroller according to claim 1, wherein: The second connecting rod is connected to the frame of the baby carriage, or the second connecting rod is connected to the frame of the baby carriage through a cross bar.

8. The baby stroller according to claim 1, wherein: The second connecting rod is provided with a driving member, and the driving member pushes the pushing member when the second connecting rod is folded relative to the first connecting rod.

9. The baby stroller according to claim 1, wherein: The baby stroller also includes: a seat bracket connected to the first connecting rod; A backrest bracket is pivotally connected to the seat bracket, and the second connecting rod is connected to the backrest bracket.

10. The baby stroller according to claim 1, wherein: The armrest folding mechanism is connected above the first connecting rod and is arranged parallel to the first connecting rod.

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