CN114802404A

CN114802404A - Foldable stroller

Info

Publication number: CN114802404A
Application number: CN202210650040.5A
Authority: CN
Inventors: 唐伟红; 钟友明; 毛成银
Original assignee: Kunshan Weikai Children Products Co Ltd
Current assignee: Kunshan Weikai Children Products Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-07-29

Abstract

The invention discloses a foldable stroller, which comprises a frame with an unfolding position and a folding position, a frame locking mechanism for locking the frame at the unfolding position, and a foldable seat bag arranged on the frame, wherein the frame comprises a push handle, a push rod, a front support and a rear support; the upper end of the front support is rotatably connected with the upper end of the rear support, the lower end of the push rod is rotatably connected with the upper end of the rear support, and the push handle is rotatably connected with the upper end of the push rod; a linkage mechanism is arranged between the seat pocket and the frame locking mechanism; when the seat bag is folded, the linkage mechanism automatically releases the locking of the frame locking mechanism, the frame can be folded, and the push handle, the push rod and the front support are arranged in an N shape after being folded; when the seat pocket is folded, the automatic unlocking of the frame can be realized, the operation is very convenient, and the whole vehicle can be folded and folded quickly.

Description

Foldable stroller

Technical Field

The invention relates to the field of children's carriages, in particular to a foldable children's carriage.

Background

The stroller in the prior art comprises a frame with an unfolding position and a folding position, a front wheel assembly arranged at the front part of the bottom of the frame, a rear wheel assembly arranged at the rear part of the bottom of the frame, a locking mechanism for locking the frame at the unfolding position, and a foldable seat bag arranged on the frame. The existing stroller has various frames, different numbers of rod pieces and different connection relations and connection positions between the rod pieces, so that the folding principle and the folding mode are different. When current children's shallow is folding, often need carry out the unblock operation of seat pocket and frame respectively, the operation is comparatively loaded down with trivial details.

Disclosure of Invention

The invention aims to: the foldable stroller has the advantages that when the seat pocket is folded and furled, the automatic unlocking of the stroller frame can be realized, the operation is very convenient, and the entire stroller can be folded and furled quickly.

The technical scheme of the invention is as follows: a foldable stroller comprises a frame with an unfolding position and a folding position, a frame locking mechanism for locking the frame at the unfolding position, and a foldable seat bag arranged on the frame, wherein the seat bag comprises a cushion frame and a backrest frame, and the frame comprises a push handle, a push rod, a front support and a rear support; the upper end of the front support is rotatably connected with the upper end of the rear support, the lower end of the push rod is rotatably connected with the upper end of the rear support, and the push handle is rotatably connected with the upper end of the push rod; a linkage mechanism is arranged between the seat pocket and the frame locking mechanism; when the seat pocket is folded, the linkage mechanism automatically releases the locking of the frame locking mechanism, the frame can be folded, and the push handle, the push rod and the front support are arranged in an N shape after the frame is folded.

Furthermore, the linkage mechanism comprises a sliding sheet which can slide relative to the frame, a first spring which is arranged between the sliding sheet and the frame, and a boss which is formed on the cushion frame or the backrest frame; one side of the slip sheet is provided with a convex column corresponding to the boss, and the other side of the slip sheet is connected with an unlocking piece of the frame locking mechanism through a traction cable;

when the seat bag is folded, the boss on the seat cushion frame or the backrest frame rotating relative to the frame is in sliding fit with the convex column and drives the sliding sheet to move, and the sliding sheet pulls the unlocking piece through the traction cable to unlock the frame locking mechanism.

Furthermore, the seat pocket also comprises a seat pocket connector rotationally connected with the seat cushion frame and the backrest frame, and a backrest angle adjusting mechanism for realizing locking and positioning of the backrest frame at different use angles; the seat pocket connector clip is detachably connected with the socket of the frame.

Furthermore, the slip sheet is arranged on the plug socket of the frame in a sliding mode, and the first spring is arranged between the slip sheet and the plug socket.

Furthermore, the plug socket is provided with a guide post, and the slide piece is provided with a guide groove for the guide post to slide.

Furthermore, the frame also comprises a rear support rod and a front support rod, the upper end of the rear support rod is rotatably connected with the lower end of the push handle, and the lower part of the rear support rod is rotatably connected with the rear support; the lower end of the rear support rod extends forwards and is rotatably connected with the rear end of the front support rod, and the front end of the front support rod is rotatably connected with the lower part of the front support.

Further, the frame locking mechanism is arranged between the push handle and the push rod or between the rear support rod and the push handle.

Furthermore, the frame locking mechanism comprises a first connecting seat positioned on the push rod or the rear support rod, a second connecting seat positioned on the push handle and rotationally matched with the first connecting seat, a gear arranged between the first connecting seat and the second connecting seat and capable of axially moving, and a second spring for driving the gear to reset, wherein the first connecting seat and the second connecting seat are provided with a first tooth socket and a second tooth socket which are matched with the gear, the unlocking piece is arranged between the gear and the second connecting seat and capable of rotating around a connecting shaft between the first connecting seat and the second connecting seat, and the gear is matched with a chute inclined plane of the unlocking piece through an inclined block;

when the frame locking mechanism is in a locking state, the gear is clamped in a first tooth groove of the first connecting seat and a second tooth groove of the second connecting seat at the same time, and the first connecting seat and the second connecting seat cannot rotate relatively at the moment;

when the slip sheet slides and pulls the unlocking piece through the traction cable, the unlocking piece rotates and drives the gear shaft to move axially, so that the gear shaft is withdrawn from the first tooth groove or the second tooth groove, the first connecting seat and the second connecting seat can rotate relatively at the moment, and the frame locking mechanism is in an unlocking state.

The invention has the advantages that: when the seat pocket is folded, the boss on the seat cushion frame or the backrest frame rotating relative to the frame is in sliding fit with the protruding column and drives the sliding piece to move, the sliding piece pulls the unlocking piece through the traction cable to unlock the frame locking mechanism, the automatic unlocking of the frame is realized, the operation is very convenient, and the whole vehicle can be folded and folded quickly. In addition, after the frame is folded, the push handle, the push rod and the front support are arranged in an N shape, so that the whole structure is simple and compact, and the frame is convenient to store.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention in use;

FIG. 2 is a schematic view showing a seat pocket of the present invention when folded;

FIG. 3 is a schematic structural view of the folding process of the vehicle frame of the present invention;

FIG. 4 is a schematic structural view after the whole vehicle is folded;

FIG. 5 is a schematic perspective view of the seat pocket of the present invention in use;

FIG. 6 is a schematic side view of the seat pocket of the present invention in use;

FIG. 7 is a schematic view of the folding joint of the seat pocket and the convex pillar in FIG. 6;

FIG. 8 is a side view of the seat pocket of the present invention in a folded state;

FIG. 9 is a schematic view of the folding joint and the convex pillar of the seat pocket of FIG. 8;

FIG. 10 is a schematic structural view of the vehicle frame of the present invention in use;

FIG. 11 is a schematic structural view of the slide plate of the socket of the present invention when the slide plate slides without force;

FIG. 12 is a schematic view of a slide sheet of the socket of the present invention after being forced to slide;

FIG. 13 is a schematic view of an assembly structure of the socket and the sliding piece of the present invention;

FIG. 14 is a schematic structural view of one embodiment of a frame locking mechanism of the present invention;

FIG. 15 is a schematic structural view of another embodiment of a frame locking mechanism according to the present invention.

Wherein: 1, a vehicle frame; 2, a seat pocket; 3, a frame locking mechanism; 4 a cushion frame; 5 a backrest frame; 6, pushing a handle; 7, pushing a rod; 8, a front bracket; 9, a rear bracket; 10 a linkage mechanism; 11 sliding sheets; 12 a first spring; 13 a boss; 14 convex columns; 15, a traction rope; 16 unlocking the lock; 17 seat pocket plug-in components; 18, a socket; 19 a guide post; 20 a guide groove; 21 a rear stay bar; 22 a front stay; 23 a first connection seat; 24 a second connecting seat; 25 gears.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.

In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one of the two, and "a plurality" denotes no less than two.

In the description of the present application and the claims, the terms "connected," "mounted," "fixed," "housed," and the like shall be understood broadly unless otherwise specified. For example, "connected" may be a separate connection or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; either non-removably or removably. For example, "accommodated" does not necessarily mean that the entire body is completely accommodated, and the concept also includes a partial accommodation case in which a part protrudes outward. The specific meaning of the foregoing terms in the present application can be understood by those skilled in the art as appropriate.

In the description of the present application and in the claims, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", etc. based on the orientation or positional relationship shown in the drawings, it is only for the convenience of clearly and simply describing the present application, and it is not indicated or implied that the elements referred to must have a specific direction, be constructed and operated in a specific orientation, and these directional terms are relative concepts for the sake of description and clarification and may be changed accordingly according to the change of orientation in which the elements in the drawings are placed. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present specification and claims, the term "if present may generally be interchangeable with" when … "or" at … "or" in response to a determination "or" in response to a detection ", depending on the context.

In the description of the present specification and claims, if there is "direction" with respect to motion, including motion having a directional component, the term "in direction" is not necessarily to be construed as motion in only that one direction, and those skilled in the art will understand the specific meaning of the aforementioned terms in the present application as the case may be.

As shown in fig. 1 to 10, a foldable stroller includes a frame 1 having an unfolded position and a folded position, a frame locking mechanism 3 for locking the frame 1 in the unfolded position, and a seat pocket 2 mounted on the frame 1 and foldable.

In this embodiment, the seat bag 2 includes a seat cushion frame 4, a backrest frame 5, and a seat bag connector 17 that are rotatably connected, and a backrest angle adjusting mechanism that realizes locking and positioning of the backrest frame 5 at different use angles. The seat pocket 2 is a seat pocket structure that is common in the art, and the setting position and the structure of the backrest angle adjusting mechanism are also various and are not specifically limited and described herein.

In this embodiment, the frame 1 includes a push handle 6, a push rod 7, a front bracket 8 with a front wheel assembly mounted at the bottom, a rear bracket 9 with a rear wheel assembly mounted at the bottom, a rear support rod 21 and a front support rod 22; the upper end of the front bracket 8 is rotatably connected with the upper end of the rear bracket 9, the lower end of the push rod 7 is rotatably connected with the upper end of the rear bracket 9, and the push handle 6 is rotatably connected with the upper end of the push rod 7; the upper end of the rear support rod 21 is rotatably connected with the lower end of the push handle 6, and the lower part of the rear support rod 21 is rotatably connected with the rear support 9; the lower end of the rear support rod 21 extends forwards and is rotatably connected with the rear end of the front support rod 22, and the front end of the front support rod 22 is rotatably connected with the lower part of the front support 8.

Further, a linkage mechanism 10 is arranged between the seat pocket 2 and the frame locking mechanism 3; when the seat pocket 2 is folded, the linkage mechanism 10 automatically releases the locking of the frame locking mechanism 3, at the moment, the frame 1 can be folded, and the push handle 6, the push rod 7 and the front bracket 8 are arranged in an N shape after being folded.

In this embodiment, when the seat bag 2 is folded, preferably, when the included angle between the backrest frame 5 and the seat cushion frame 4 is smaller than 90 degrees, the linkage mechanism 10 automatically releases the locking of the frame locking mechanism 3, so that accidental unlocking caused by misoperation when a seated child is not completely seated can be avoided, and the safety performance during use is improved.

As shown in fig. 7, 9, 11 to 13, the linkage mechanism 10 includes a sliding piece 11 that is slidable relative to the frame 1, a first spring 12 disposed between the sliding piece 11 and the frame 1, and a boss 13 formed on the cushion frame 4 or the back frame 5; one side of the sliding sheet 11 is provided with a convex column 14 corresponding to the convex platform 13, and the other side of the sliding sheet 11 is connected with an unlocking piece 16 of the frame locking mechanism 3 through a traction cable 15.

When the seat pocket 2 is folded, the boss 13 on the seat cushion frame 4 or the backrest frame 5 which rotates relative to the frame 1 is in sliding fit with the convex column 14 and drives the sliding sheet 11 to move, and the sliding sheet 11 pulls the unlocking piece 16 through the traction cable 15 to unlock the frame locking mechanism 3.

In this embodiment, frame 1 is equipped with and corresponds complex bayonet socket 18 with seat pocket plug connector 17, seat

pocket plug connector

17 and 18 detachable connections of bayonet socket of frame 1, preferably the plug-in type is connected, and this kind of detachable connection mode is common structure in this technical field, does not do specific restriction here and gives unnecessary details.

The sliding piece 11 is slidably disposed on the socket 18 of the vehicle frame 1, and the first spring 12 is disposed between the sliding piece 11 and the socket 18. In order to provide a better guiding function for the sliding of the sliding piece 11, the inserting seat 18 is provided with a guiding column 19, and the sliding piece 11 is provided with a guiding groove 20 for the sliding of the guiding column 19.

In this embodiment, the frame lock mechanism 3 is provided between the push handle 6 and the push rod 7 or between the rear stay 21 and the push handle 6.

As shown in fig. 14 and 15, the frame locking mechanism 3 includes a first connecting seat 23 located on the push rod 7 or the rear brace 21, a second connecting seat 24 located on the push handle 6 and rotationally engaged with the first connecting seat 23, a gear 25 disposed between the first connecting seat 23 and the second connecting seat 24 and axially movable, and a second spring for driving the gear 25 to return, the first connecting seat 23 and the second connecting seat 24 are provided with a first tooth groove and a second tooth groove engaged with the gear 25, the unlocking member 16 is disposed between the gear 25 and the second connecting seat 24 and rotatable around a connecting shaft between the first connecting seat 23 and the second connecting seat 24, and the gear 25 is engaged with a bevel face of the unlocking member 16 through a bevel block. Wherein, all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the claimed invention. Such as: the unlocking element 16 can also be arranged between the gear wheel 25 and the first connecting seat 23; the gear 25, in turn, can engage the ramp of the unlocking member 16 via a ramp.

When the frame locking mechanism 3 is in a locked state, the gear 25 is simultaneously clamped in the first tooth groove of the first connecting seat 23 and the second tooth groove of the second connecting seat 24, and at the moment, the first connecting seat 23 and the second connecting seat 24 cannot rotate relatively;

when the sliding piece 11 slides and pulls the unlocking piece 16 through the traction cable 15, the unlocking piece 16 rotates and drives the gear 25 to move axially, so that the gear 25 exits the first tooth groove or the second tooth groove, at the moment, the first connecting seat 23 and the second connecting seat 24 can rotate relatively, and the frame locking mechanism 3 is in an unlocking state.

When the seat pocket 2 is folded, the automatic unlocking of the frame can be realized, the operation is very convenient, and the whole vehicle can be folded and folded quickly.

The above are only specific application examples of the present invention, and do not limit the scope of the present invention in any way. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by using equivalent substitutions or equivalent transformations fall within the scope of the present invention.

Claims

1. The utility model provides a collapsible children's shallow, including frame (1) that has expansion position and folding position, lock frame (1) in frame locking mechanical system (3) under the expansion position and install on frame (1) and folding seat pocket (2), seat pocket (2) are including seat frame (4) and back frame (5), its characterized in that: the frame (1) comprises a push handle (6), a push rod (7), a front bracket (8) and a rear bracket (9); the upper end of the front support (8) is rotatably connected with the upper end of the rear support (9), the lower end of the push rod (7) is rotatably connected with the upper end of the rear support (9), and the push handle (6) is rotatably connected with the upper end of the push rod (7); a linkage mechanism (10) is arranged between the seat pocket (2) and the frame locking mechanism (3); when the seat pocket (2) is folded, the linkage mechanism (10) automatically releases the locking of the frame locking mechanism (3), at the moment, the frame (1) can be folded, and the push handle (6), the push rod (7) and the front support (8) are arranged in an N shape after being folded.

2. A foldable stroller according to claim 1, wherein: the linkage mechanism (10) comprises a sliding sheet (11) capable of sliding relative to the frame (1), a first spring (12) arranged between the sliding sheet (11) and the frame (1), and a boss (13) formed on the cushion frame (4) or the backrest frame (5); one side of the sliding sheet (11) is provided with a convex column (14) corresponding to the convex plate (13), and the other side of the sliding sheet (11) is connected with an unlocking piece (16) of the frame locking mechanism (3) through a traction cable (15);

when the seat pocket (2) is folded, a boss (13) on the seat cushion frame (4) or the backrest frame (5) which rotates relative to the frame (1) is in sliding fit with the convex column (14) and drives the sliding sheet (11) to move, and the sliding sheet (11) pulls the unlocking piece (16) through the traction rope (15) to unlock the frame locking mechanism (3).

3. A foldable stroller according to claim 2, wherein: the seat pocket (2) also comprises a seat pocket connector (17) which is rotationally connected with the cushion frame (4) and the backrest frame (5), and a backrest angle adjusting mechanism which realizes the locking and positioning of the backrest frame (5) at different use angles; the seat pocket plug connector (17) is detachably connected with a plug socket (18) of the frame (1).

4. A foldable stroller according to claim 3, wherein: the sliding sheet (11) is arranged on a plug socket (18) of the frame (1) in a sliding mode, and the first spring (12) is arranged between the sliding sheet (11) and the plug socket (18).

5. The foldable stroller of claim 4, wherein: the plug socket (18) is provided with a guide post (19), and the sliding sheet (11) is provided with a guide groove (20) for the guide post (19) to slide.

6. A foldable stroller according to claim 1, wherein: the frame (1) further comprises a rear support rod (21) and a front support rod (22), the upper end of the rear support rod (21) is rotatably connected with the lower end of the push handle (6), and the lower part of the rear support rod (21) is rotatably connected with the rear bracket (9); the lower end of the rear support rod (21) extends forwards and is rotatably connected with the rear end of the front support rod (22), and the front end of the front support rod (22) is rotatably connected with the lower part of the front support (8).

7. The foldable stroller of claim 6, wherein: the frame locking mechanism (3) is arranged between the push handle (6) and the push rod (7) or between the rear support rod (21) and the push handle (6).

8. The foldable stroller of claim 7, wherein: the frame locking mechanism (3) comprises a first connecting seat (23) positioned on the push rod (7) or the rear support rod (21), a second connecting seat (24) positioned on the push handle (6) and rotationally matched with the first connecting seat (23), a gear (25) which is arranged between the first connecting seat (23) and the second connecting seat (24) and can axially move, and a second spring for driving the gear (25) to reset, wherein a first tooth groove and a second tooth groove which are matched with the gear (25) are formed in the first connecting seat (23) and the second connecting seat (24), the unlocking piece (16) is arranged between the gear (25) and the second connecting seat (24) and can rotate around a connecting shaft between the first connecting seat (23) and the second connecting seat (24), and the gear (25) is matched with an inclined groove of the unlocking piece (16) through an inclined block;

when the frame locking mechanism (3) is in a locking state, the gear (25) is clamped in a first tooth groove of the first connecting seat (23) and a second tooth groove of the second connecting seat (24) at the same time, and the first connecting seat (23) and the second connecting seat (24) cannot rotate relatively at the moment;

when the sliding sheet (11) slides and pulls the unlocking piece (16) through the traction cable (15), the unlocking piece (16) rotates and drives the gear (25) to axially move, so that the gear is withdrawn from the first tooth groove or the second tooth groove, the first connecting seat (23) and the second connecting seat (24) can relatively rotate at the moment, and the frame locking mechanism (3) is in an unlocking state.