CN211663319U - Portable stroller frame and children's stroller - Google Patents

Abstract

The present disclosure relates to a portable cart frame and a children's cart. The portable cart frame includes: a front foot group; a rear foot group; a first joint (1), which is fixedly connected to the rear foot group and is rotatably connected to the front foot group; a frame support group is rotatably connected to the rear foot group and the first joint (1). , is configured to be supported on the first joint (1) and the rear foot group in the unfolded state of the portable cart frame, and folded and folded with the rear foot group in the folded state of the portable cart frame; the front support group, The front foot group and the frame support group are respectively connected, and are configured to unfold the front foot group in the unfolded state of the portable cart frame, and retract the front foot group and make the front foot group and the rear foot group in the retracted state of the portable cart frame. and the rear support group, respectively connected to the rear foot group and the frame support group, and configured to unfold the rear foot group in the unfolded state of the portable cart frame, and make the rear foot group in the retracted state of the portable cart frame. Group collapsing.

Description

Portable stroller frame and children's stroller

technical field

The present disclosure relates to a portable stroller frame and a children's stroller.

Background technique

A trolley is a human-driven transport vehicle that can be used for short- and medium-distance transportation of goods, babies, etc. In order to reduce the space occupied by the trolley in the non-use state, some trolleys in the related art can realize the function of folding the cart in the front-rear direction, the up-down direction or the left-right direction.

SUMMARY OF THE INVENTION

After research, it is found that some foldable carts in the related art have many folding steps, which leads to the problem of inconvenient operation. Some carts are larger in size after being folded, which leads to inconvenient storage or transportation. In addition, some carts are folded. The rear of the car is small in size, but the frame is easy to shake and become unstable when it is unfolded and used normally.

In view of this, the embodiments of the present disclosure provide a portable stroller frame and a children's stroller, which are easy to fold and relatively stable after unfolding.

In one aspect of the present disclosure, there is provided a portable cart frame comprising:

forefoot group;

rear foot group;

a first joint, fixedly connected with the rear foot group, and rotatably connected with the front foot group;

A frame support group, rotatably connected to the rear foot group and the first joint, is configured to be supported on the first joint and the rear foot group in the unfolded state of the portable cart frame, and is The portable cart frame is folded in the folded state and folded with the rear foot group;

The front support group is connected to the front foot group and the frame support group respectively, and is configured to unfold the front foot group in the unfolded state of the portable cart frame, and to unfold the front foot group when the portable cart frame is folded. In the state, the front foot group is folded and the front foot group and the rear foot group are folded; and

The rear support group is connected to the rear foot group and the frame support group respectively, and is configured to unfold the rear foot group in the unfolded state of the portable cart frame, and to expand the rear foot group in the unfolded state of the portable cart frame. The rear foot group is folded in the folded state.

In some embodiments, the portable cart frame further includes:

A seat frame support group, respectively connected to the frame support group and the first joint, is configured to be deployed in the deployed state of the portable cart frame to form a structure for mounting on the portable cart It supports the seat on the frame, and is folded and folded between the frame support group and the front foot group in the folded state of the portable cart frame.

In some embodiments, the forefoot set includes two forefoot bars, the front support group includes: a first front connecting support bar, a second front connecting support bar, two front support links, and two forefoot connectors, The first end of the first front connecting support rod and the first end of the second front connecting support rod are pivotally connected to the two front foot rods respectively, and the second end of the first front connecting support rod is connected to the two front foot rods. The second ends of the second front connecting support rods are pivotally connected, one end of the two front support rods is respectively pivoted with the first front connecting support rod and the second front connecting support rod, and the other ends are respectively connected with the first front connecting support rod and the second front connecting support rod. The frame support group is connected, one end of the two front foot connecting pieces is pivotally connected with the two front foot rods, and the other end is respectively connected with the frame support group; the frame support group is configured to be in the When the frame support group is folded toward the rear foot group, the two front foot rods are driven to fold toward the rear foot group by the two front foot connecting pieces, and the first front connection is driven by the two front foot connecting pieces The support rod and the second front connecting support rod are folded toward each other, so that the two front foot rods are close to each other.

In some embodiments, the first front connecting support bar and the second front connecting support bar are provided at 180 degrees in the unfolded state of the portable cart frame.

In some embodiments, it is provided that the two front support links are bent rods, and both ends of the two front support links connected to the frame support group are located between the two front foot connectors and the The inside of the end where the frame support group is attached.

In some embodiments, it is provided that the rear foot group includes two rear foot rods, which are respectively fixedly connected to the two first joints, and the rear support group includes: two sliding connectors, two sliding support links, two sliding A support connector and a first cross bar group, two sliding connectors are respectively slidably arranged on the two rear foot bars, the two sliding support connectors are respectively pivotally connected with the frame support group, the two One end of each sliding support link is pivotally connected with the two sliding connecting pieces, and the other end is fixedly connected with the two sliding supporting connecting pieces, respectively. The first cross-bar group has four ends, wherein the first The end portion and the second end portion are respectively pivoted with the two first joints, and the third end portion and the fourth end portion are respectively pivoted with the two sliding connecting pieces; the frame support group is configured to When the frame support group is folded toward the rear foot group, the two sliding connecting pieces are driven to slide toward the lower ends of the two rear foot rods respectively through the two sliding support links, and the two sliding support rods are driven to slide toward the lower ends of the two rear foot rods respectively. The sliding of the connecting piece drives the change of the cross angle of the first cross bar group, so that the two rear leg bars move toward each other.

In some embodiments, providing the first set of cross-bars includes: a first rear foot sliding link and a second rear foot sliding link, the first rear foot sliding link and the second rear foot sliding link being arranged to cross, The two ends of the first rear foot sliding link are respectively the first end and the fourth end of the first cross link group, and the two ends of the second rear foot sliding link are respectively pivoted at the cross position. are the second end and the third end of the first cross-bar group.

In some embodiments, the plane of rotation providing the first set of crossbars is parallel to the plane of relative movement of the two rear foot bars.

In some embodiments, providing the frame support group includes: a back support rod, a handlebar support rod, an upper support rod and a second joint, two ends of the back support rod are respectively connected with the rear foot group and the second joint. The two ends of the upper support rod are pivotally connected with the first joint and the second joint respectively, the handle support rod is fixedly connected with the second joint, and the rear support group is connected to the second joint. The front support groups are all rotatably connected with the backrest support rod.

In some embodiments, the portable cart frame further includes: a seat frame support group; the seat frame support group includes: a second cross-bar group, the second cross-bar group has four ends, wherein the first cross-bar group One end portion and the second end portion are pivotally connected with the two first joints respectively, and the third end portion and the fourth end portion are respectively rotatably connected with the backrest support rod; the frame support group is configured to When the backrest support rod is folded toward the rear foot group, the change of the distance between the backrest support rod and the first joint drives the change of the cross angle in the second cross rod group, so that the two first joints are changed. A joint close to each other.

In some embodiments, the second set of cross-bars includes: a first mount support link, a second mount support link, a third mount support link, and a fourth mount support link, the first mount support link The one frame support link and the second seat frame support link are arranged crosswise and are pivotally connected at the cross position, and the third seat frame support link and the fourth seat frame support link are arranged crosswise and are pivotally connected at the cross position , one end of the first seat frame support link and the second seat frame support link are used as the first end and the third end of the second cross-bar group, respectively, and the first seat frame support link and the The other ends of the second seat frame support links are pivotally connected to one end of the fourth seat frame support links and the third seat frame support links, respectively, the fourth seat frame support links and the third seat frame support links The other ends of the support link of the seat frame serve as the second end portion and the fourth end portion of the second cross-bar group, respectively.

In some embodiments, the portable cart frame further includes: a seat frame support group; the seat frame support group includes: an armrest connector, an armrest assembly, a seat frame linkage, a seat extension connector, and a footrest assembly, Both ends of the armrest connecting piece are pivotally connected with the armrest group and the backrest support rod, the armrest group is pivotally connected with the upper support rod, and one end of the seat extension connecting piece is pivoted with the footrest group The other end is pivotally connected with the first joint, and the two ends of the seat frame linkage are respectively rotatably connected with the armrest connector and the seat frame linkage; the frame support group is configured to be in the When the backrest support rod is folded toward the rear foot group, the change in the distance between the backrest support rod and the upper support rod drives the change in the angle between the armrest group and the armrest connecting piece, so that the The armrest connecting piece drives the footrest group to turn an angle in a direction away from the front foot group through the seat extension connecting piece and the seat frame linkage.

In some embodiments, the frame support group includes two handlebar support rods, the frame support group further includes two handle bases, two handles, two handle locks and handle buttons, the two handle The upper ends of each handle support rod are fixedly connected to the lower ends of the two handle bases, respectively, the upper ends of the two handle groups are pivotally connected to the two handles, and the two handles are both connected to the handles. The lock button and the handle button are rotatably connected. By simultaneously pressing the handle button and the handle two lock buttons, the two handles can be unlocked relative to the two handle bases, and by making the two handle The handle is rotated relative to the two handle bases to unlock the second joint, the upper support rod and the backrest support rod.

In some embodiments, the armrest group includes: two side armrests, two connecting rods and a front armrest, the two side armrests are pivotally connected with the armrest connecting member and the upper support rod, the two One end of the connecting rod is pivotally connected to both ends of the front armrest respectively, and the other end is pivotally connected to the two side armrests respectively.

In one aspect of the present disclosure, there is provided a children's stroller, comprising: the aforementioned portable stroller frame.

Therefore, according to the embodiment of the present disclosure, the front leg group and the rear leg group are respectively deployed through the front support group and the rear support group in the unfolded state of the portable stroller frame, and the front support group is used in the folded state of the portable stroller frame. The front foot group and the rear foot group are respectively folded with the rear support group, and the front foot group and the rear foot group are folded toward each other, so that on the one hand, the front foot group, the front foot group and the rear foot group in the unfolded state of the portable cart frame are adjusted by the front support group and the rear support group. The rear foot group and the frame support group form a stable support function, so that the frame of the portable cart in the unfolded state is not easy to shake. On the other hand, the front support group and the rear support group are driven by the folding process of the frame support group to make the front foot group It can be folded and folded opposite to the rear foot group, which makes the folding operation of the portable cart frame more convenient. In some embodiments, the seat frame support group can strengthen the connection with the frame support group, the rear support group and the first joint to form a more stable support structure.

Description of drawings

The accompanying drawings, which form a part of the specification, illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, wherein:

FIG. 1 and FIG. 2 are respectively schematic structural diagrams of some embodiments of the portable cart frame according to the present disclosure from different viewing angles in an unfolded state;

FIG. 3 and FIG. 4 are schematic structural diagrams of different viewing angles in a semi-folded state according to some embodiments of the portable cart frame of the present disclosure;

FIG. 5 and FIG. 6 are respectively schematic structural diagrams of different viewing angles in a folded state according to some embodiments of the portable cart frame of the present disclosure;

FIG. 7 and FIG. 8 are respectively partial structural schematic diagrams of different parts of some embodiments of the portable cart frame according to the present disclosure;

FIG. 9 is an exploded enlarged view of the local structure within circle A in FIG. 1 .

It should be understood that the dimensions of the various parts shown in the drawings are not to actual scale. Furthermore, the same or similar reference numerals denote the same or similar components.

Description of reference numerals

1-The first joint, 2-upper support rod, 3-front foot rod, 4-rear foot rod, 5-second joint, 6-handle support rod, 7-back support rod, 8-slide support link, 9- Sliding connecting piece, 10-front wheel set, 11-first front connecting support rod, 12-second front connecting support rod, 13-front support link, 14-front foot connecting piece, 15-handle seat, 16-handle, 17-handle secondary lock button, 18-handle button, 19-rotation connection, 20-footrest group, 21-armrest group, 22-seat extension connection, 23-seat frame linkage, 24-slide support connection Parts, 25-armrest connecting piece, 26-rear wheel set, 27-first rear foot sliding link, 28-second rear foot sliding link, 29-first seat frame support link, 30-second seat frame support link rod, 31 - the third seat frame support link, 32 - the fourth seat frame support link.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the disclosure, its application or uses in any way. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that unless specifically stated otherwise, the relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values set forth in these embodiments are to be interpreted as illustrative only and not as limiting.

As used in this disclosure, "first," "second," and similar words do not denote any order, quantity, or importance, but are merely used to distinguish the different parts. "Comprising" or "comprising" and similar words mean that the element preceding the word covers the elements listed after the word, and does not exclude the possibility that other elements are also covered. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In the present disclosure, when a specific device is described as being located between the first device and the second device, there may or may not be an intervening device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other device without intervening devices, or may not be directly connected to the other device but have intervening devices.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general-purpose dictionaries should be construed to have meanings consistent with their meanings in the context of the related art, and not to be construed in an idealized or highly formalized sense, unless explicitly stated herein. Defined like this.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

As shown in FIG. 1 and FIG. 2 , they are respectively schematic structural diagrams of some embodiments of the portable cart frame according to the present disclosure from different viewing angles in an unfolded state. Referring to FIGS. 1 and 2, and in conjunction with FIGS. 3-9, in some embodiments, the portable cart frame includes: a front foot group, a rear foot group, a first joint 1, a frame support group, a front support group, and a rear support Group. The orientation terms "front" and "rear" mentioned here and hereinafter are determined based on the direction in which the portable cart frame is pushed and normally moves. For a stroller including the portable stroller frame, the child riding the stroller is positioned to the front of the person pushing the stroller, and the person is positioned to the rear of the child. The orientation words "left" and "right" are determined based on the forward direction of the portable cart frame. The directional word "down" is the direction adjacent to the ground or other surface on a portable frame parked or running on the ground or other surface, and "up" is the direction away from the ground or other surface.

In FIGS. 1 and 2 , the forefoot set includes two forefoot bars 3 . A front wheel group 10 can also be provided on the lower ends of the two front foot rods 3 for the front foot group, which is used for contacting with the ground and walking on the ground. The rear foot group includes two rear foot bars 4 . A rear wheel group 26 can also be provided at the lower ends of the two rear foot bars 4 for the rear foot group to be in contact with the ground and walk on the ground.

The first joint 1 is fixedly connected with the rear foot group, and is rotatably connected with the front foot group. In FIG. 1 , the portable cart frame includes two first joints 1 , which are respectively fixedly connected to the upper ends of the two rear leg bars 4 , and are pivotally connected to the upper ends of the two front leg bars 3 respectively.

a frame support group, rotatably connected with the rear foot group and the first joint 1, and configured to be supported on the first joint 1 and the rear foot group in the unfolded state of the portable cart frame, And in the folded state of the portable cart frame, it is folded and folded with the rear foot group.

1 and 2 , the frame support group may include: a backrest support rod 7 , a handlebar support rod 6 , an upper support rod 2 and a second joint 5 . Both ends of the backrest support rod 7 are pivotally connected to the rear foot group and the second joint 5 respectively, and both ends of the upper support rod 2 are pivotally connected to the first joint 1 and the second joint 5 respectively. The handle support rod 6 is fixedly connected with the second joint 5 . In FIG. 1 , the frame support group includes two backrest support bars 7 . The two backrest support rods 7 are pivotally connected to the two rear foot rods 4 respectively, and have a portion extending forward relative to the pivoted position.

In FIG. 1 and FIG. 3 , the frame support group includes two handlebar support rods 6 , and the frame support group also includes two handle bases 15 , two handles 16 , a handle secondary locking member 17 and a handle button 18 . The upper ends of the two handle support rods 6 are fixedly connected to the lower ends of the two handle bases 15 respectively, and the upper ends of the two handle groups are pivotally connected to the two handles 16 respectively. The two handles 16 Both are rotatably connected to the handle two-way lock press member 17 and the handle button 18. By pressing the handle button 18 and the handle two-way lock press member 17 at the same time, the two handles 16 can be relative to the two handles. The handle bases 15 are unlocked, and by rotating the two handles 16 relative to the two handle bases 15, the second joint 5 can be connected between the upper support rod 2 and the backrest support rod 7 Unlock.

In some embodiments, the front support group is connected to the front foot group and the frame support group, respectively, and is configured to deploy the front foot group in the unfolded state of the portable cart frame, and install the portable cart In the folded state of the frame, the front foot group is folded and folded with the rear foot group.

1 and 7 , in some embodiments, the front support group includes: a first front connecting support rod 11 , a second front connecting support rod 12 , two front support links 13 and two front foot connecting pieces 14 . The first end of the first front connecting support rod 11 and the first end of the second front connecting support rod 12 are pivotally connected to the two front foot rods 3 respectively. Both ends are pivotally connected to the second end of the second front connecting support rod 12 .

One end of the two front support links 13 is pivotally connected with the first front connecting support rod 11 and the second front connecting support rod 12 respectively, and the other ends are respectively connected with the frame support group. One end of the two front foot connectors 14 is pivotally connected to the two front foot rods 3 respectively, and the other end is respectively connected to the frame support group. Both the front support link 13 and the front foot connecting member 14 can be pivotally connected with the portion of the backrest support rod 7 extending forward relative to the pivot position.

When the frame support group is folded toward the rear foot group, the two front foot links 14 can drive the two front foot rods 3 to fold toward the rear foot group, and the two front foot links 14 can be folded toward the rear foot group. The front foot connecting member 14 drives the first front connecting support rod 11 and the second front connecting support rod 12 to fold toward each other, so that the two front foot rods 3 are moved toward each other. In this way, the size of the front foot group in the left-right direction and the front-rear direction can be reduced in the folded state, and the size of the folded frame can be further reduced.

In order to improve the stability of the portable cart frame in the unfolded state, the first front connecting support rod 11 and the second front connecting support rod 12 are 180 degrees in the unfolded state of the portable cart frame, so that the first front The connection support rod 11 and the second front connection support rod 12 do not easily generate a torque that causes them to fold when they are subjected to a force passing through their pivots.

In addition, referring to FIGS. 2 and 3 , in some embodiments, the two front support links 13 are bent rods, so that the front support links 13 are connected to the first front connecting support rod 11 and the second front connecting support rod 12 . The pivot axis need not be parallel to the pivot axis of the front support link 13 and the back support link 7 .

In FIGS. 1-7 , the ends of the two front support links 13 connected to the frame support group are located inside the ends of the two front foot connectors 14 connected to the frame support group. In this way, the two are not likely to interfere with each other during folding, so that they can be folded into a smaller size.

In some embodiments, the rear support group is connected to the rear foot group and the frame support group, respectively, and is configured to deploy the rear foot group in the unfolded state of the portable cart frame, and to deploy the rear foot group in the portable cart frame. In the folded state of the cart frame, the rear foot group is folded and folded with the rear foot group.

2, 4 and 7-8, in some embodiments, the rear support group includes: two sliding connecting pieces 9, two sliding supporting connecting rods 8, two sliding supporting connecting pieces 24 and the first A set of crossbars. The two sliding connecting pieces 9 are respectively slidably arranged on the two rear foot rods 4 , the two sliding supporting connecting pieces 24 are respectively pivotally connected with the frame support group, and the two sliding supporting links 8 One end is pivotally connected with the two sliding connecting pieces 9 respectively, and the other end is fixedly connected with the two sliding supporting connecting pieces 24 respectively. The sliding connector 9 can be a sleeve that is sleeved on the rear foot rod 4 .

The first cross-bar group has four ends, wherein the first end and the second end are pivotally connected with the two first joints 1 respectively, and the third end and the fourth end are respectively slid with the two The connecting member 9 is pivotally connected; the frame support group is configured to drive the two sliding connecting members 9 through the two sliding support links 8 when the frame supporting group is folded toward the rear foot group, respectively. Slide toward the lower ends of the two rear leg rods 4 , and drive the cross angle of the first cross rod group to change through the sliding of the two sliding connectors 9 , so that the two rear leg rods 4 move toward each other. In this way, the size of the rear leg group in the left-right direction and the front-rear direction can be reduced in the folded state, and the size of the folded frame can be further reduced.

In FIGS. 2 and 4 , the first cross bar group includes: a first rear foot sliding link 27 and a second rear foot sliding link 28 . The first rear foot sliding link 27 and the second rear foot sliding link 28 are arranged intersectingly, and are pivotally connected at the intersecting position. The two ends of the first rear foot sliding link 27 are the first end and the fourth end of the first cross-bar group, respectively, and the two ends of the second rear foot sliding link 28 are the first end and the fourth end respectively. The second end and the third end of the crossbar set. The cross-bar group is more stable in support, and can move synchronously during folding, thereby simplifying the folding operation. In order to further reduce the size in the front-rear direction after folding, the rotation plane of the first cross-bar group can also be made parallel to the relative movement plane of the two rear leg bars 4 .

In the above embodiment, both the rear support group and the front support group can be rotatably connected with the backrest support rod 7 . By operating the backrest support rod 7, the rear support group and the front support group can be driven to fold or unfold the rear foot group and the front foot group, thereby further simplifying the operation.

For the frame of the portable cart that needs to set the seating position, a seat frame support group can also be added to realize the setting and support of the seating position. In some embodiments, the portable cart frame further includes: a seat frame support group connected with the frame support group and the first joint 1 respectively. The seat frame support set is configured to be deployed in the deployed state of the portable cart frame to form a support for a seat mounted on the portable cart frame, and to be mounted on the portable cart frame It is folded and folded between the frame support group and the front foot group in the folded state.

Referring to Figures 1-9, in some embodiments, the seat frame support group includes: a second cross-bar group having four ends, wherein a first end and a second end They are pivotally connected to the two first joints 1 respectively, and the third end and the fourth end are respectively connected to the backrest support rod 7 in rotation. In FIG. 2 , the third end portion and the fourth end portion of the second cross-bar group are respectively rotatably connected to the sliding support connector 24 , and the sliding support connector 24 is rotatably connected to the backrest support tube 7 .

The frame support group is configured to drive the second cross bar through the change of the distance between the backrest support bar 7 and the first joint 1 when the backrest support bar 7 is folded toward the rear foot group The angle of intersection in the group is varied so that the two first joints 1 are moved towards each other. In this way, the size of the first joint and the backrest support rod in the left-right direction and the front-rear direction can be reduced in the folded state of the frame, and the size of the folded frame can be further reduced.

In FIGS. 2 , 7 and 8 , the second cross-bar group includes: a first mount support link 29 , a second mount support link 30 , a third mount support link 31 and a fourth mount support link connecting rod 32. The first seat frame support link 29 and the second seat frame support link 30 are arranged intersecting and pivoted at the intersection position, and the third seat frame supporting link 31 and the fourth seat frame supporting link 32 are arranged intersecting , and pivoted at the cross position.

One ends of the first seat frame support link 29 and the second seat frame support link 30 serve as the first end and the third end of the second cross-bar group, respectively, and the first seat frame support link 29 and the other ends of the second seat frame support link 30 are pivotally connected to one end of the fourth seat frame support link 32 and the third seat frame support link 31 respectively, and the fourth seat frame support link 32 and the other end of the third seat frame support link 31 respectively serve as the second end and the fourth end of the second cross-bar group. The cross-bar group is more stable in support, and can move synchronously during folding, thereby simplifying the folding operation.

Referring to FIGS. 1 , 7-9 , in some embodiments, the seat frame support group includes: an armrest connecting member 25 , an armrest assembly 21 , a seat frame linkage member 23 , a seat extension connecting member 22 and a footrest assembly 20 . Both ends of the armrest connecting member 25 are pivotally connected to the armrest group 21 and the backrest support rod 7 respectively, and the armrest group 21 is pivotally connected to the upper support rod 2 . One end of the seat extension connecting member 22 is pivotally connected to the footrest group 20 , and the other end is pivotally connected to the first joint 1 . Both ends of the seat frame linking member 23 are respectively rotatably connected to the armrest connecting member 25 and the seat frame linking member 23 .

In FIGS. 1-6 , the armrest group 21 includes: two side armrests, two connecting rods and a front armrest, and the two side armrests are pivotally connected to the armrest connecting member 25 and the upper support rod 2 One end of the two connecting rods is pivotally connected with both ends of the front armrest respectively, and the other end is pivotally connected with the two side armrests respectively. In this way, the armrest group 21 can be folded into a smaller size in the left-right direction, so that the portable cart frame can be folded smaller.

The frame support group is configured to drive the armrest group 21 and the armrest group 21 through the change of the distance between the backrest support rod 7 and the upper support rod 2 when the backrest support rod 7 is folded toward the rear foot group. The included angle of the armrest connector 25 is changed, so that the armrest connector 25 drives the footrest group 20 in a direction away from the front foot group through the seat extension connector 22 and the seat frame linkage 23 Flip angle. In this way, the armrest group and the footrest group can also be folded to a smaller size in the front-rear direction as the backrest support bar 7 is folded toward the rear foot group.

The above-mentioned embodiments of the portable cart frame of the present disclosure can be applied to various types of carts, such as children's carts, article carts, and the like. In one aspect of the present disclosure, there is also provided a children's stroller, comprising any of the aforementioned portable stroller frames.

The following describes the folding process from the unfolded state to the folded state based on some embodiments of the portable cart frame shown in FIGS. 1-9 .

When it is necessary to fold the frame of the portable cart in the unfolded state, the operator first presses the handle two-way lock button 17 by hand, and then presses the handle button 18 by hand to realize the gap between the left and right handles 16 Unlock. Move the two handles 16 down to rotate between the two handles 16 and the handle base 15 (see Figures 3 and 4 ), through this rotation, the second joint 5 is connected to the backrest support tube 7 and the upper support tube 2 to unlock.

After unlocking between the second joint 5 and the backrest support tube 7 and the upper support tube 2, the operator presses down the handlebar support rod 6 to drive the backrest support rod 7 and the upper support tube 2 to go around the rear leg tube 4 and the first joint respectively 1 turn. Through the movement of the upper support tube 2 and the backrest support tube 7, the armrest group 21, the armrest connecting piece 25 and the sliding support link 8 are driven to move.

When the sliding support link 8 moves downward, the sliding connecting member 9 is driven to slide down along the rear leg tube 4 . The movement of the sliding connector 9 drives the first rear foot sliding link 27 and the second rear foot sliding link 28 to move, so that the cross angle of the first cross-bar group changes, and further drives the left and right front foot groups, rear foot groups and The frame support group moves in the middle direction. At the same time, the sliding support link 8 also drives the second seat frame support link 30 and the third seat frame support link 31 to move, so that the crossing angle of the second cross-bar group changes, thereby driving the first joints on the left and right sides 1 and the frame support group move in the middle direction.

When the backrest support rod 7 moves relative to the upper support rod 2 , the backrest support rod 7 can drive the armrest connecting member 25 to move, and then drive the seat frame linkage 23 and the armrest group 21 to move. The seat frame linkage can further drive the extension connecting member 22 and the footrest group 20 connected thereto to move. The backrest support tube 7 can also drive the front foot connecting piece 14 to move, so as to drive the front foot rod 3 to rotate around the first joint 1 and move closer to the rear foot rod 4 .

The backrest support tube 7 also drives the front support link 13 to move, and through the movement of the front support link 13, the first front connection support rod 11 and the second front connection support rod 12 are folded toward each other, so that the left and right sides are folded. The front foot group moves in the middle direction. Figures 5 and 6 show the good retracting effect of each component folded close to each other after the frame of the portable cart is folded.

So far, the various embodiments of the present disclosure have been described in detail. Some details that are well known in the art are not described in order to avoid obscuring the concept of the present disclosure. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

While some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are provided for illustration only, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that, without departing from the scope and spirit of the present disclosure, the above embodiments can be modified or some technical features can be equivalently replaced. The scope of the present disclosure is defined by the appended claims.

Claims (15)

1. A portable cart frame, comprising:

a front foot group;

a rear foot group;

the first joint (1) is fixedly connected with the rear foot group and is rotationally connected with the front foot group;

the frame supporting group is rotationally connected with the rear foot group and the first joint (1), is configured to be supported on the first joint (1) and the rear foot group in an unfolding state of the portable cart frame, and is folded and folded with the rear foot group in a folding state of the portable cart frame;

a front support group connected to the front leg group and the frame support group, respectively, and configured to unfold the front leg group in an unfolded state of the frame of the portable stroller, and fold the front leg group and the rear leg group in a folded state of the frame of the portable stroller; and

and the rear support group is respectively connected with the rear foot group and the frame support group and is configured to unfold the rear foot group in the unfolded state of the frame of the portable cart and fold the rear foot group in the folded state of the frame of the portable cart.

2. The portable cart frame of claim 1, further comprising:

a seat support group, connected to the frame support group and to the first joint (1), respectively, configured to be unfolded in the unfolded state of the frame of the portable stroller to form a support for a seat mounted on the frame of the portable stroller, and to be folded and folded between the frame support group and the front leg group in the folded state of the frame of the portable stroller.

3. Portable stroller frame according to claim 1, characterized in that said front foot set comprises two front foot bars (3), said front support set comprising: the front leg connecting device comprises a first front connecting support rod (11), a second front connecting support rod (12), two front support connecting rods (13) and two front leg connecting pieces (14), wherein the first end of the first front connecting support rod (11) and the first end of the second front connecting support rod (12) are respectively pivoted with the two front leg rods (3), the second end of the first front connecting support rod (11) is pivoted with the second end of the second front connecting support rod (12), one ends of the two front support connecting rods (13) are respectively pivoted with the first front connecting support rod (11) and the second front connecting support rod (12), the other ends of the two front support connecting rods (14) are respectively pivoted with the two front leg rods (3), and the other ends of the two front leg connecting pieces are respectively connected with the frame supporting group; the frame support group is configured to drive the two front foot rods (3) to be folded towards the rear foot group through the two front foot connectors (14) when the frame support group is folded towards the rear foot group, and drive the first front connecting support rod (11) and the second front connecting support rod (12) to be folded towards each other through the two front foot connectors (14), so that the two front foot rods (3) are drawn towards each other.

4. Portable stroller frame according to claim 3, characterized in that said first (11) and second (12) front connecting support bar are 180 degrees in the unfolded state of said portable stroller frame.

5. A portable stroller frame according to claim 3, characterized in that the two front support links (13) are both knee bars, and the ends of the two front support links (13) connected to the frame support group are both located inside the ends of the two front foot attachments (14) connected to the frame support group.

6. Portable stroller frame according to claim 1, characterized in that said rear foot set comprises two rear foot bars (4) fixedly connected to two first joints (1), respectively, said rear support set comprising: the two sliding connecting pieces (9), the two sliding supporting connecting rods (8), the two sliding supporting connecting pieces (24) and a first cross rod group are arranged, the two sliding connecting pieces (9) are respectively arranged on the two rear foot rods (4) in a sliding mode, the two sliding supporting connecting pieces (24) are respectively pivoted with the frame supporting group, one ends of the two sliding supporting connecting rods (8) are respectively pivoted with the two sliding connecting pieces (9), the other ends of the two sliding supporting connecting rods are respectively fixedly connected with the two sliding supporting connecting pieces (24), the first cross rod group is provided with four end parts, a first end part and a second end part are respectively pivoted with the two first joints (1), and a third end part and a fourth end part are respectively pivoted with the two sliding connecting pieces (9); the frame support group is configured to drive the two sliding connecting pieces (9) to respectively slide towards the lower ends of the two rear foot rods (4) through the two sliding support connecting rods (8) when the frame support group is folded towards the rear foot group, and drive the cross angle change of the first cross rod group through the sliding of the two sliding connecting pieces (9) so as to enable the two rear foot rods (4) to be closed towards each other.

7. The portable cart frame of claim 6, wherein said first cross bar set comprises: first back foot slip connecting rod (27) and second back foot slip connecting rod (28), first back foot slip connecting rod (27) with second back foot slip connecting rod (28) are criss-cross to be arranged, and at the pin joint of crossing position, the both ends of first back foot slip connecting rod (27) are respectively first tip and the fourth tip of first cross rod group, the both ends of second back foot slip connecting rod (28) are respectively the second tip and the third tip of first cross rod group.

8. Portable stroller frame according to claim 6, characterized in that the plane of rotation of said first cross bar set is parallel to the plane of movement of said two rear foot bars (4) towards each other.

9. The portable cart frame of any of claims 1 to 8, wherein said frame support assembly comprises: back bracing piece (7), hand (hold) bracing piece (6), go up bracing piece (2) and second joint (5), back bracing piece (7) both ends respectively with back foot group with second joint (5) pin joint, go up bracing piece (2) both ends respectively with first joint (1) with second joint (5) pin joint, hand (hold) bracing piece (6) with second joint (5) fixed connection, back support group with preceding support group all with back bracing piece (7) rotate to be connected.

10. The portable cart frame of claim 9, further comprising: a seat frame support group; the seat frame support set comprises: the first cross rod group is provided with four end parts, wherein the first end part and the second end part are respectively pivoted with the two first joints (1), and the third end part and the fourth end part are respectively connected with the backrest support rod (7) in a rotating way; the frame support group is configured to drive the change of the intersection angle in the second cross rod group through the change of the distance between the backrest support rod (7) and the first joint (1) when the backrest support rod (7) is folded towards the rear foot group, so that the two first joints (1) are closed towards each other.

11. The portable cart frame of claim 10, wherein said second cross bar set comprises: a first seat frame support connecting rod (29), a second seat frame support connecting rod (30), a third seat frame support connecting rod (31) and a fourth seat frame support connecting rod (32), wherein the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are arranged in a crossed manner and are pivoted at a crossed position, the third seat frame support connecting rod (31) and the fourth seat frame support connecting rod (32) are arranged in a crossed manner and are pivoted at a crossed position, one ends of the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are respectively used as a first end part and a third end part of the second cross rod group, the other ends of the first seat frame support connecting rod (29) and the second seat frame support connecting rod (30) are respectively pivoted with one ends of the fourth seat frame support connecting rod (32) and the third seat frame support connecting rod (31), and the other ends of the fourth seat frame support connecting rod (32) and the third seat frame support connecting rod (31) are respectively used as a second end part and a second end part of the second rod group and a third end part of the A fourth end portion.

12. The portable cart frame of claim 9, further comprising: a seat frame support group; the seat frame support set comprises: the armrest comprises an armrest connecting piece (25), an armrest group (21), a seat frame linkage piece (23), a seat extension connecting piece (22) and a foot rest group (20), wherein two ends of the armrest connecting piece (25) are respectively pivoted with the armrest group (21) and the backrest supporting rod (7), the armrest group (21) is pivoted with the upper supporting rod (2), one end of the seat extension connecting piece (22) is pivoted with the foot rest group (20), the other end of the seat extension connecting piece is pivoted with the first joint (1), and two ends of the seat frame linkage piece (23) are respectively rotatably connected with the armrest connecting piece (25) and the seat frame linkage piece (23); the frame support group is configured to drive the armrest group (21) and the included angle of the armrest connecting piece (25) to change through the change of the distance between the backrest support rod (7) and the upper support rod (2) when the backrest support rod (7) is folded towards the rear foot group, so that the armrest connecting piece (25) drives the footrest group (20) to turn over the angle along the direction far away from the front foot group through the seat extension connecting piece (22) and the seat frame linkage piece (23).

13. The portable stroller frame according to claim 9, wherein the frame support set comprises two handle support bars (6), the frame support set further comprises two handle seats (15), two handles (16), a handle two-way latch (17) and a handle button (18), the upper ends of the two handle support bars (6) are fixedly connected with the lower ends of the two handle seats (15), the upper ends of the two handle sets are pivotally connected with the two handles (16), the two handles (16) are rotatably connected with the handle two-way latch (17) and the handle button (18), the two handles (16) can be unlocked relative to the two handle seats (15) by simultaneously pressing the handle button (18) and the handle two-way latch (17), and the two handles (16) can be rotated relative to the two handle seats (15), can unlock the second joint (5) from the upper support bar (2) and the backrest support bar (7).

14. The portable stroller frame according to claim 12, wherein the armrest set (21) comprises: the two side handrails are pivoted with the handrail connecting piece (25) and the upper supporting rod (2), one ends of the two connecting rods are respectively pivoted with two ends of the front handrail, and the other ends of the two connecting rods are respectively pivoted with the two side handrails.

15. A child stroller, comprising:

a portable cart frame according to any of claims 1 to 14.

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