TWM622371U - Foldable stroller frame and child stroller therewith - Google Patents

Abstract

A foldable stroller frame includes a front leg, a rear leg, a handle and a linking assembly. The rear leg is pivoted to the front leg and the handle. The linking assembly is pivoted to the front leg, the handle and the rear leg. The linking assembly drives the front leg to pivotally fold relative to the rear leg when the handle is pivotally folded relative to the rear leg. The foldable stroller frame further includes a seat assembly and a seat linking rod. The seat assembly is pivoted to the front leg, the rear leg or the handle. The seat linking rod is pivoted to the seat assembly and the linking assembly. The linking assembly drives the seat assembly to pivotally fold when the linking assembly drives the front leg to pivotally fold relative to the rear leg. Besides, a child stroller with the foldable stroller frame is provided.

Description

The collapsible frame and its stroller

This creation is about a children's product, especially a collapsible frame and its stroller.

In order to meet the practicability and portability required by consumers, the frame body of the child carrier is usually designed to be foldable. When the user wants to use the child carrier, the frame body can be unfolded to the unfolded state. When the child carrier needs to be used again, the user can fold the frame body to the folded state for convenient storage or carrying.

The frame of the existing stroller includes a front foot, a rear foot, a handle, and two folding mechanisms respectively arranged between the front foot and the rear foot, between the front foot and the handle, or respectively arranged between the front foot and the rear foot and between the rear foot and the handle. , When the user wants to fold the frame, he must bend down and operate one of the folding mechanisms to perform the relative folding of the front foot and the rear foot, and then operate the other folding mechanism to perform the relative folding of the handle and the front foot or the handle and the rear foot. Folding, the above operation is not only cumbersome, and in order to complete the above operation, the user needs to bend down and use both hands, so the use is relatively inconvenient.

In addition, in order to facilitate the children to ride, the existing stroller also includes a seat set mounted on the frame, but since the seat set is only supported by the support links located on both sides, the seat set cannot be stable. It is firmly supported, and the support link is easily broken or deformed.

Therefore, the purpose of this creation is to provide a collapsible frame and a stroller thereof to solve the above problems.

In order to achieve the above purpose, the present invention discloses a foldable bicycle frame, which includes a front foot, a rear foot, a handle and at least one link assembly, the rear foot is pivotally connected to the front foot, the handle is pivotally connected to the rear foot, and the at least one The link assembly is pivotally connected to the front foot, the handle and the rear foot, and the at least one link assembly is used to drive the front foot to pivot and fold relative to the rear foot when the handle is pivotally folded relative to the rear foot.

According to one embodiment of the present invention, the at least one link assembly includes a first link and a second link, a first end of the first link is pivoted to the front foot, and one of the first links The second end is pivotally connected to a first end of the second link, and a second end of the second link is pivotally connected to the rear leg.

According to one embodiment of the present invention, the at least one link assembly further includes a third link, a first end of the third link is pivotally connected to the first link or the second link, the third link A second end of the connecting rod is pivotally connected to the handle.

According to one embodiment of the present invention, the first end of the third link, the second end of the first link, and the first end of the second link are pivotally connected to each other at a pivot point.

According to one embodiment of the present invention, the third link includes the third link close to the third link An arc part of the first end makes the third connecting rod a bending structure.

According to one embodiment of the present invention, the foldable frame further includes a seat set and a seat linkage rod, and the seat set is pivotally connected to the front leg, the rear leg or the handle through a seat pivot point , a first pivot part of the seat link rod is pivotally connected to the seat set, and at least a second pivot part of the seat link rod is pivotally connected to the at least one link assembly.

According to one embodiment of the present invention, the seat link rod includes an inclined section located between the first pivot portion and the at least one second pivot portion of the seat link rod and along the retractable portion An up-down direction and a left-right direction of the frame extend.

According to one embodiment of the present invention, a middle portion of the seat link rod forms the first pivot portion, the first pivot portion is pivotally connected to the seat set, and the at least one link assembly includes two links assembly, the at least one second pivoting portion includes two second pivoting portions, the two second pivoting portions are respectively formed at both ends of the seat link rod, and the two second pivoting portions are pivotally connected to the two second pivoting portions respectively. connecting rod assembly.

According to one embodiment of the present invention, the seat linkage rod includes a first section, two second sections and two third sections, the first section is pivotally connected to the seat set, and the two second sections are respectively connected by the first section. Both ends of one segment are bent and extended outward, and each third segment is bent and extended from an end of the corresponding second segment away from the first segment and is pivotally connected to the corresponding link assembly.

According to one embodiment of the present invention, the first section of the seat link rod extends along a left-right direction of the foldable frame, and each second section of the seat link rod extends along a side of the foldable frame It extends in the up-down direction and the left-right direction.

According to one embodiment of the present invention, a lower surface of the seat set is formed with a rotation channel for cooperating with the first section of the seat link rod, and the rotation channel extends along the left-right direction of the collapsible frame , the first section of the seat linkage rod is rotatably arranged in the rotation channel.

According to one embodiment of the present invention, the seat set includes at least one rotating member, and one end of the at least one rotating member is pivotally connected to the front leg, the rear leg or the handle to form the seat pivot point.

According to one embodiment of the present invention, the at least one second pivot portion of the seat link lever is pivotally connected to any link of the at least one link assembly.

According to one embodiment of the present invention, the at least one link assembly includes a first link and a second link, a first end of the first link is pivoted to the front foot, and one of the first links The second end is pivotally connected to a first end of the second link, a second end of the second link is pivotally connected to the rear foot, and the at least one second pivot portion of the seat link lever is pivotally connected to the first link of the at least one link assembly.

According to one embodiment of the present invention, the at least one second pivot portion of the seat link lever is pivotally connected to an intermediate portion of the first link of the at least one link assembly.

According to one embodiment of the present invention, the seat set includes a front seat panel, a rear seat panel, and a positioning assembly, the rear seat panel is pivotally connected to the front seat panel, and the positioning assembly is connected to the front seat panel and the rear seat panel and is used for allowing or restricting the rear seat panel relative to the front seat panel to pivot between an unfolded position and a folded position.

According to one embodiment of the present invention, the foldable frame further includes an armrest and at least one armrest linkage, the handle includes a lower handle and an upper handle, the lower handle is pivotally connected to the front foot, and the upper handle is pivotally connected In the lower handle, the armrest is pivotally connected to the lower handle, and both ends of the at least one armrest linking member are pivotally connected to the upper handle and the armrest respectively. When the upper handle is pivoted and folded relative to the lower handle, the The armrest is driven to pivot and fold relative to the lower handle.

According to one embodiment of the present invention, the armrest includes a front armrest and a rear armrest, the front armrest is pivotally connected to the rear armrest, the lower handle is pivotally connected to the front armrest or the rear armrest, and the at least one armrest linking member is pivoted Connected to the front armrest and the rear armrest, when the upper handle is pivotally unfolded or folded relative to the lower handle, the front armrest and the rear armrest are driven to pivotally unfold or fold relative to the lower handle.

In order to achieve the above purpose, the present invention further discloses a stroller, which includes the foldable frame of any of the above embodiments and a carrier body mounted on the foldable frame.

Compared with the prior art, in this creation, when the handle is pivoted and folded relative to the rear foot, the link assembly can drive the front foot to pivot and fold relative to the rear foot, and when the link assembly drives the front foot to pivot and fold relative to the rear foot The link assembly can drive the seat set to pivot and fold, so the foldable frame and the stroller of the present invention are not only simple in structure but also convenient to fold.

10: Forefoot

100,100a: Retractable frame

1000, 1000a: Stroller

20: back foot

201: Cooperation Department

30: handle

31: Lower handle

32: Upper handle

40: Connecting rod assembly

401: The first pivot point

402: Second pivot point

403: Third pivot point

404: Fourth pivot point

405: Fifth pivot point

406: Sixth pivot

407: Seat pivot point

408: Link pivot point

41: The first link

42: Second Link

43: Third Link

44: Seat linkage rod

4401: The first pivot

4402: Second pivot

441: first paragraph

442: Second paragraph

443: third paragraph

50: Seat set

51: Front seat panel

52: Rear seat panel

520: Positioning Components

53: Turning parts

54: Turn the channel

61: Armrest linkage

62,62a: Armrest

621: Front armrest

622: Rear armrest

FIG. 1 and FIG. 2 are partial structural diagrams of the stroller at different angles according to the first embodiment of the invention.

FIG. 3 is an enlarged schematic view of part A of the stroller shown in FIG. 1 according to the first embodiment of the invention.

FIG. 4 is an enlarged schematic view of part B of the stroller shown in FIG. 2 according to the first embodiment of the invention.

FIG. 5 is a schematic diagram of a part of the structure of the collapsible frame according to the first embodiment of the invention.

Figures 6 to 9 are schematic views of the collapsible frame in different states according to the first embodiment of the invention.

FIG. 10 is a partial structural schematic diagram of the collapsible frame in the unfolded state according to the first embodiment of the invention.

FIG. 11 is a schematic diagram of a part of the structure of the foldable frame in the folded state according to the first embodiment of the invention.

FIG. 12 and FIG. 13 are partial structural diagrams of the stroller in different states according to the second embodiment of the invention.

Figures 14 and 15 are schematic structural diagrams of the handrail in different states of the second embodiment of the invention.

The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only for referring to the directions of the attached drawings. Therefore, the directional terms used are intended to be illustrative and not intended to limit the creation. In addition, the term "pivot" or "connection" herein includes any direct and indirect means of structural connection. Therefore, if the first device is described as being pivoted/connected to the second device, it means that the first device can be directly structurally connected to the second device, or indirectly structurally connected to the second device through other devices or connecting means.

In order to describe the technical content and structural features of the present creation in detail, several embodiments are listed below for further description in conjunction with the accompanying drawings.

Please refer to Figures 1 to 11. Figures 1 and 2 are partial structural diagrams of a stroller 1000 at different angles according to the first embodiment of the invention. Figure 3 is the first embodiment of the invention. The illustrated enlarged schematic diagram of the part A of the stroller 1000, Figure 4 is an enlarged schematic diagram of the B part of the stroller 1000 shown in the first embodiment of the creation, and Figure 5 is the first embodiment of the creation. Example 1 foldable car Parts of the structure of the frame 100 are schematic views. Figures 6 to 9 are schematic views of the foldable frame 100 in different states according to the first embodiment of the invention. Figure 10 shows the foldable frame 100 of the first embodiment of the invention. A schematic diagram of a part of the structure in the unfolded state, and FIG. 11 is a schematic diagram of a part of the structure of the collapsible bicycle frame 100 in the collapsed state according to the first embodiment of the creation. As shown in FIG. 1 to FIG. 11, the stroller 1000 includes a collapsible frame 100 and a carrier body (not shown in the figure), and the vehicle body system is installed on the collapsible frame 100 for accommodating For children, for example, the vehicle body can be a portable seat, a sleeping box or a carrying basket. The collapsible frame 100 includes a front leg 10, a rear leg 20, a handle 30 and two link assemblies 40. The two link assemblies 40 are respectively located on opposite sides of the collapsible frame 100. The front foot 10, the rear foot 20, the handle 30 and the two link assemblies 40 are linked with each other. When the handle 30 is pivoted and folded relative to the rear foot 20, the front foot 10 can be connected by two The rod assembly 40 is driven to pivot and fold relative to the rear foot 20, but the invention is not limited to this. For example, in another embodiment, the foldable frame may only include one on one side of the frame. connecting rod assembly.

The two link assemblies 40 located on opposite sides of the collapsible frame 100 have the same structure and action, so only the link assembly 40 located on one side will be described below.

As shown in FIGS. 1 to 5 and 9 to 11, the front leg 10 is pivotally connected to the rear leg 20 through a first pivot point 401 , and the rear leg 20 is pivoted through a second pivot point 402 Connected to the handle 30, the link assembly 40 is pivotally connected to the front leg 10, the rear leg 20 and the handle 30 via a third pivot point 403, a fourth pivot point 404 and a fifth pivot point 405, respectively. The assembly 40, the handle 30 and the rear foot 20 together form a first four-bar linkage mechanism, the linkage assembly 40, the front leg 10 and the rear leg 20 together form a second four-bar linkage mechanism, the first four-bar linkage mechanism is shared with the second four-bar linkage mechanism At least one link of the link assembly 40 is used so that when the handle 30 is pivoted and folded relative to the rear foot 20 , the front foot 10 can be driven to pivot and fold relative to the rear foot 20 . In this embodiment, the front end of the rear foot 20 includes a fitting portion 201 that is bent and extended toward the front foot 10 . The second pivot point 402 is pivotally connected to the mating One of the parts 201 is a bent part.

As shown in FIGS. 1 to 5, 9 and 10, the link assembly 40 includes a first link 41 and a second link 42. The first end of the first link 41 is connected by The third pivot point 403 is pivotally connected to the front foot 10 , the second end of the first link 41 is pivotally connected to the first end of the second link 42 through a sixth pivot point 406 , and the second link 42 is The second end is pivotally connected to the rear leg 20 through the fourth pivot point 404 .

Specifically, in this embodiment, the link assembly 40 further includes a third link 43 , and the first end of the third link 43 is pivotally connected to the first link of the first link 41 via the sixth pivot point 406 . The two ends are connected to the first end of the second link 42 , the second end of the third link 43 is pivotally connected to the handle 30 through the fifth pivot point 405 , the first link 41 , the second link 42 , the front foot 10 and the rear foot 20 together form a second four-link mechanism, the second link 42, the third link 43, the rear foot 20 and the handle 30 together form a first four-link mechanism, the first four-link mechanism and the second four-link mechanism together The lever mechanism shares the second link 42 of the link assembly 40, but the present invention is not limited to this embodiment. For example, in another embodiment, the third link can also be pivoted to only one of the first link and the second link.

Preferably, the third link 43 includes an arc portion close to the sixth pivot point 406, that is, the arc portion is close to the first end of the third link 43, so that the third link 43 has a bent structure, so as to effectively The torque applied by the third link 43 to the first link 41 and the second link 42 is increased.

In addition, as shown in FIG. 5 , the collapsible frame 100 further includes a seat group 50 and a seat link rod 44 . The seat group 50 is pivotally connected to the handle 30 through a seat pivot point 407 , and the seat The link rod 44 is supported by the seat set 50 below the seat set 50 , a middle part of the seat link rod 44 forms a first pivot part 4401 , and two ends of the seat link rod 44 respectively form two second pivot parts 4402, the first pivot part 4401 is pivotally connected to the seat group In the middle portion of 50, each second pivot portion 4402 is pivotally connected to the first link 41 of the corresponding link assembly 40 through a link pivot point 408, and the first pivot portion 4401 is relative to the seat set The pivot shaft of 50 and each second pivot portion 4402 extend along the left and right directions of the collapsible frame 100 relative to the pivot shaft of the corresponding link assembly 40 .

In this embodiment, the projection points of the seat pivot point 407 , the first pivot part 4401 and the second pivot part 4402 on the vertical plane can be arranged in a triangle, and the seat pivot point 407 can be connected to the first pivot point Point 401 coincides.

Specifically, as shown in FIGS. 3 to 5 , the seat link rod 44 includes a first segment 441 , two second segments 442 and two third segments 443 , and the first segment 441 is pivotally connected to the seat group 50 . In the middle part, the two second segments 442 are respectively bent and extended outward from both ends of the first segment 441 , and each third segment 443 is bent and extended from one end of the corresponding second segment 442 away from the first segment 441 and is pivotally connected For the first link 41 of the corresponding link assembly 40 , the first section 441 is a horizontal section extending along the left-right direction of the collapsible frame 100 , and each second section 442 is a horizontal section extending along the foldable frame 100 . The inclined sections extending in the left-right direction and the up-down direction, each third section 443 is a vertical section extending along the up-down direction of the collapsible frame 100, the first pivot portion 4401 is formed on the first section 441, and each second pivot The connecting portion 4402 is formed on the corresponding third segment 443 .

More specifically, the lower surface of the seat set 50 is formed with a rotation channel 54 extending along the left-right direction of the collapsible frame 100 , and the first pivot portion 4401 on the first section 441 of the seat link rod 44 is rotatable. It is arranged in the rotation channel 54 .

As shown in FIG. 5 , the seat set 50 includes two rotating members 53 . The two rotating members 53 are respectively located in the middle of two opposite sides of the seat set 50 , and one end of each rotating member 53 is pivotally connected to the handle 30 to form Seat pivot point 407 .

However, the present invention is not limited to this embodiment. For example, in another embodiment, the seat set can be pivoted to the front foot or the rear foot through the seat pivot point. Alternatively, in another embodiment, the seat pivot point may not coincide with the first pivot point. Or, in another embodiment, the seat link lever is only formed with one second pivot portion located at one end thereof and pivotally connected to the second link or the third link. Alternatively, in another embodiment, the seat set may only include a rotating member located on one side and pivotally connected to the front leg or the rear leg.

Preferably, as shown in FIG. 1 , FIG. 5 and FIG. 8 , the seat set 50 includes a front seat panel 51 , a rear seat panel 52 and a positioning assembly 520 , and the front seat panel 51 is pivotally connected to the seat linkage rod. 44. The rear seat panel 52 is pivotally connected to the front seat panel 51, and the positioning assembly 520 is connected between the front seat panel 51 and the rear seat panel 52 and is used to allow or restrict the rear seat panel 52 relative to the front seat panel 51 in the unfolded position and the folded position Since the seat pan 52 is located in the folding path of the handle 30 after the unfolded position, when the user wants to fold the foldable bicycle frame 100, the positioning assembly 520 can be operated first to allow the rear seat pan 52 to be relative to the foldable frame 100. The front seat panel 51 pivots, and then the handle 30 is folded, so that the rear seat panel 52 can be driven by the handle 30 to be folded to the folded position relative to the front seat panel 51 , thereby preventing the rear seat panel 52 from hindering the folding of the handle 30 .

In addition, as shown in FIG. 1 , FIG. 6 and FIG. 7 , the collapsible frame 100 further includes an armrest 62 and two armrest linkages 61 . The two armrest linkages 61 are located on opposite sides of the armrest 62 . 30 includes a lower handle 31 and an upper handle 32, the lower handle 31 is pivotally connected to the front foot 10, the upper handle 32 is pivotally connected to the lower handle 31, the armrest 62 is pivotally connected to the lower handle 31, and the two ends of each armrest linking member are respectively pivoted Regarding the upper handle 32 and the armrest 62, when the upper handle 32 is pivoted and folded relative to the lower handle 31, the armrest 62 is driven to pivot and fold relative to the lower handle 31. However, the present invention is not limited to this embodiment, for example For example, in another embodiment, a handrail connector on one side may be included.

Please refer to Figures 12 to 15 again. Figures 12 and 13 are partial structural schematic diagrams of a stroller 1000a in different states according to the second embodiment of the invention, and Figures 14 and 15 are the second embodiment of the invention. Embodiment 1 is a schematic diagram of the structure of the handrail 62a in different states. As shown in FIGS. 12 to 15, the stroller 1000a includes a collapsible frame 100a. Unlike the collapsible frame 100 of the first embodiment, the collapsible frame 100a of this embodiment is different from the collapsible frame 100 of the first embodiment. It includes an armrest 62a. The armrest 62a includes a front armrest 621 and a rear armrest 622. The front armrest 621 is pivotally connected to the rear armrest 622. The lower handle 31 is pivotally connected to the front armrest 621. The rear armrest 622, when the upper handle 32 is pivotally unfolded or folded relative to the lower handle 31, the front armrest 621 and the rear armrest 622 are driven together to pivotally unfold or fold relative to the lower handle 31, but this creation is not limited here. For example, in another embodiment, the lower handle can be pivotally connected to the rear armrest.

Compared with the prior art, in this creation, when the handle is pivoted and folded relative to the rear foot, the link assembly can drive the front foot to pivot and fold relative to the rear foot, and when the link assembly drives the front foot to pivot and fold relative to the rear foot The link assembly can drive the seat set to pivot and fold, so the foldable frame and the stroller of the present invention are not only simple in structure but also convenient to fold.

The above are only preferred embodiments of this creation, and all equivalent changes and modifications made according to the scope of the patent application of this creation shall fall within the scope of this creation.

10: Forefoot

100: Retractable frame

1000: Stroller

20: back foot

30: handle

31: Lower handle

32: Upper handle

401: The first pivot point

402: Second pivot point

403: Third pivot point

404: Fourth pivot point

406: Sixth pivot

408: Link pivot point

41: The first link

42: Second Link

43: Third Link

44: Seat linkage rod

50: Seat set

51: Front seat panel

52: Rear seat panel

61: Armrest linkage

62: Armrest

Claims (19)

A collapsible bicycle frame, comprising: a front foot; a rear foot, which is pivotally connected to the front foot; a handle, which is pivotally connected to the rear foot; and at least one link assembly, which is pivotally connected to the front foot, the handle and The rear foot and the at least one link assembly are used to drive the front foot to pivot and fold relative to the rear foot when the handle is pivotally folded relative to the rear foot. The collapsible bicycle frame as claimed in claim 1, wherein the at least one link assembly includes a first link and a second link, a first end of the first link is pivotally connected to the front foot, the A second end of the first link is pivotally connected to a first end of the second link, and a second end of the second link is pivotally connected to the rear leg. The collapsible bicycle frame as claimed in claim 2, wherein the at least one link assembly further comprises a third link, and a first end of the third link is pivotally connected to the first link or the second link A connecting rod, a second end of the third connecting rod is pivotally connected to the handle. The collapsible bicycle frame as claimed in claim 3, wherein the first end of the third link, the second end of the first link and the first end of the second link are pivotally connected to each other A pivot point. The collapsible bicycle frame as claimed in claim 3, wherein the third link includes an arc portion close to the first end of the third link, so that the third link has a bending structure. The foldable vehicle frame as claimed in claim 1, further comprising a seat set and a seat link rod, the seat set is pivotally connected to the front leg, the rear leg or the handle through a seat pivot point , a first pivot part of the seat link rod is pivotally connected to the seat set, and at least a second pivot part of the seat link rod is pivotally connected to the at least one link assembly. The foldable frame of claim 6, wherein the seat link rod includes an inclined section located between the first pivot portion and the at least one second pivot portion of the seat link rod and extends along an up-down direction and a left-right direction of the collapsible frame. The foldable bicycle frame as claimed in claim 6, wherein a middle portion of the seat link rod forms the first pivot portion, the first pivot portion is pivotally connected to the seat set, and the at least one link The assembly includes two link assemblies, the at least one second pivoting portion includes two second pivoting portions, the two second pivoting portions are respectively formed at both ends of the seat link rod, and the two second pivoting portions not pivotally connected to the two link assemblies. The foldable frame as claimed in claim 8, wherein the seat link rod comprises a first section, two second sections and two third sections, the first section is pivotally connected to the seat set, and the two first sections The two sections are respectively bent and extended outward from both ends of the first section, and each third section is bent and extended from an end of the corresponding second section away from the first section and is pivotally connected to the corresponding connecting rod components. The foldable frame as claimed in claim 9, wherein the first section of the seat link rod extends along a left-right direction of the foldable frame, and each second section of the seat link rod extends along the foldable frame. An up-down direction and the left-right direction of the folded frame extend. The foldable vehicle frame as claimed in claim 10, wherein a lower surface of the seat set is formed with a rotation channel for cooperating with the first section of the seat link rod, and the rotation channel is along the foldable vehicle The frame extends in the left-right direction, and the first section of the seat linkage rod is rotatably disposed in the rotation channel. The foldable bicycle frame as claimed in claim 6, wherein the seat set includes at least one rotating member, and one end of the at least one rotating member is pivotally connected to the front leg, the rear leg or the handle to form the seat pivot contact. The foldable vehicle frame as claimed in claim 6, wherein the at least one second pivot portion of the seat link lever is pivotally connected to any link of the at least one link assembly. The collapsible bicycle frame as claimed in claim 13, wherein the at least one link assembly includes a first link and a second link, a first end of the first link is pivotally connected to the front foot, and the A second end of the first link is pivotally connected to a first end of the second link, a second end of the second link is pivotally connected to the rear foot, and the at least one second link of the seat link rod The pivot portion is pivotally connected to the first link of the at least one link assembly. The foldable bicycle frame as claimed in claim 14, wherein the at least one second pivot portion of the seat link lever is pivotally connected to a middle portion of the first link of the at least one link assembly. The foldable bicycle frame as claimed in claim 6, wherein the seat set comprises a front seat panel, a rear seat panel and a positioning assembly, the rear seat panel is pivotally connected to the front seat panel, and the positioning assembly is connected to the front seat between the panel and the rear seat panel and for allowing or restricting the rear seat panel relative to the front seat panel in a pivots between an unfolded position and a folded position. The foldable bicycle frame according to claim 1, further comprising an armrest and at least one armrest linkage, the handle comprising a lower handle and an upper handle, the lower handle is pivotally connected to the front foot, and the upper handle is pivotally connected In the lower handle, the armrest is pivotally connected to the lower handle, and both ends of the at least one armrest linking member are pivotally connected to the upper handle and the armrest respectively. When the upper handle is pivoted and folded relative to the lower handle, the The armrest is driven to pivot and fold relative to the lower handle. The collapsible bicycle frame as claimed in claim 17, wherein the armrest comprises a front armrest and a rear armrest, the front armrest is pivotally connected to the rear armrest, the lower handle is pivotally connected to the front armrest or the rear armrest, the At least one armrest linkage is pivotally connected to the front armrest and the rear armrest. When the upper handle is pivotally unfolded or folded relative to the lower handle, the front armrest and the rear armrest are driven to pivot relative to the lower handle Expand or collapse. A children's stroller includes the collapsible frame as described in any one of claims 1 to 18 and a carrier body mounted on the collapsible frame.

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