Folding joint structure of baby carriage

Abstract

The utility model discloses a folding joint structure of a baby carriage, which comprises a first connecting piece, a second connecting piece and a locking mechanism, the first connecting piece and the second connecting piece are rotationally connected and have an unfolded state and a folded state, the locking mechanism is arranged between the first connecting piece and the second connecting piece, and a mounting column extending axially is arranged at the rotating joint of the first connecting piece. The installation column is sleeved with a torsion spring, one end of the torsion spring is connected with the first connecting piece, and the other end of the torsion spring is connected with the second connecting piece. The folding joint is novel and simple in structure, the torsional spring is additionally arranged between the first connecting piece and the second connecting piece, after the locking mechanism is unlocked, the first connecting piece can be automatically folded relative to the second connecting piece under the action of the torsional spring and the gravity of the first connecting piece only by applying assistance force to the first connecting piece, and the folding joint is rapidly folded; manual auxiliary folding in the whole process is not needed, and operation is easy and labor-saving.

Description

Technical Field

[0001] The utility model relates to a folding joint structure of a baby carriage. Background Art

[0002] A baby stroller is a preferred means of travel for infants and young children. In order to facilitate carrying, most baby strollers are designed to be foldable. Such baby strollers can effectively reduce the volume they occupy when folded, and can be conveniently placed in the trunk of a car or on the luggage rack.

[0003] At present, most of the components of baby carriages are connected by rotation. When folding or unfolding, the corresponding components need to be rotated to a predetermined position, and the frame is generally provided with a locking mechanism for locking the frame when it is in the unfolded position. Conventional locking mechanisms are generally unlocked by unlocking members and traction locks for easy operation. The unlocking members are usually provided on the push rod assembly or the push handle assembly. However, in the prior art, when folding two unfolded components (such as the push rod and the push handle), it is often necessary to unlock them and manually rotate one of the components (the push handle) to its folded position relative to the other component (the push rod), which is not convenient and time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the utility model is to provide a folding joint structure of a baby carriage, which has a novel and simple structure. After the locking mechanism is unlocked, only an assisting force needs to be applied to the first connecting member, and the first connecting member can be automatically folded relative to the second connecting member under the action of the torsion spring and its own gravity, thereby realizing rapid folding of the folding joint. There is no need for manual auxiliary folding throughout the entire process, and the operation is simple and labor-saving.

[0005] The technical solution of the utility model is: a folding joint structure of a baby carriage, comprising a first connecting member and a second connecting member which are rotatably connected and have an expanded state and a folded state, and a locking mechanism arranged between the first connecting member and the second connecting member, wherein the rotating connection of the first connecting member has an axially extending mounting column, and a torsion spring is sleeved on the mounting column, one end of the torsion spring is connected to the first connecting member, and the other end is connected to the second connecting member; when the first connecting member and the second connecting member are relatively folded, the torsion spring can assist the two to be folded quickly.

[0006] As a preferred technical solution, the rotating connection of the second connecting member has an opening corresponding to the mounting column, and the outer side of the second connecting member has a cover plate, which is fixedly connected to the mounting column and can rotate with the first connecting member.

[0007] As a preferred technical solution, the folding joint structure also includes a canopy rod connecting piece, which is coaxially connected to the first connecting piece and the second connecting piece, and is limited by the cover plate through a limiting structure, and can rotate with the cover plate and the first connecting piece.

[0008] As a preferred technical solution, one side of the awning rod connector close to the cover plate has a protruding limiting block, and the outer side wall of the cover plate has a plurality of limiting grooves that cooperate with the limiting block. The angle adjustment of the awning rod connector can be realized by the snap-fit of the limiting block and different limiting grooves.

[0009] As a preferred technical solution, the first connector is arranged at the lower end of the push handle, and the second connector is arranged at the upper end of the push rod.

[0010] As a preferred technical solution, the locking mechanism includes a first card slot at the rotation connection of the first connector, a second card slot at the rotation connection of the second connector, a locking gear arranged between the first card slot and the second card slot, and a reset member arranged between the locking gear and the second connector. A rotating wheel and a linkage wheel are coaxially arranged in sequence between the first connector and the locking gear. The rotating wheel and the linkage wheel are in inclined surface cooperation, and the rotating wheel is connected to the unlocking assembly through a traction cable;

[0011] When the locking mechanism is in the locked state, its locking gear is simultaneously clamped in the first card slot and the second card slot. At this time, the first connector and the second connector cannot rotate relative to each other;

[0012] When the locking mechanism is unlocked, the unlocking assembly drives the rotating wheel to rotate through the traction cable. The rotating wheel drives the axial displacement of the linkage wheel through the inclined surface cooperation, and pushes the locking gear to axially move out of the first card slot and retract into the second card slot. At this time, the first connector and the second connector can rotate relative to each other.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The structure of the present utility model is novel and simple. A torsion spring is added between the first connector and the second connector. After the locking mechanism is unlocked, only a boosting force needs to be applied to the first connector, and it can automatically close relative to the second connector under the action of the torsion spring and its own gravity, realizing the rapid folding of this folding joint, without manual assistance for the whole folding process, and the operation is simple and labor-saving.

[0015] 2. The installation method of the awning rod connector of the present utility model is also improved. The traditional awning rod connector rotates with the second connector (push rod). When the vehicle frame is folded, a force for adjusting the awning head needs to be overcome. The awning rod connector of this design is in limit cooperation with the first connector (push handle) and rotates with it. When the vehicle frame is folded, there is no need to overcome the force for adjusting the awning head, which is more convenient for automatic vehicle folding.

[0016] 3. The cover plate in the present utility model has a plurality of limiting grooves that cooperate with the limiting blocks. The awning rod connector can achieve multi-gear angle adjustment through the clamping cooperation of the limiting blocks and different limiting grooves, with a simple and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical substantive significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model when it is in the unfolded state during implementation;

[0020] Figure 2 It is a partial assembly structure schematic diagram of the present utility model;

[0021] Figure 3 For Figure 1 the assembly structure schematic diagram;

[0022] Figure 4 For Figure 3 the assembly structure schematic diagram of one side folding joint;

[0023] Figure 5 For Figure 3 the assembly structure schematic diagram of the other side folding joint;

[0024] Figure 6 It is a cross-sectional structure schematic diagram of the present utility model;

[0025] Figure 7 It is a structure schematic diagram of the present utility model when it is implemented on a baby carriage and in the unfolded state;

[0026] Figure 8 It is a structure schematic diagram of the present utility model when it is implemented on a baby carriage and in the folding process;

[0027] Figure 9 It is a structure schematic diagram of the present utility model when it is implemented on a baby carriage and in the folded state.

[0028] Wherein: 1 is the first connecting member; 101 is the mounting post;

[0029] 2 is the second connecting member;

[0030] 3 is the locking mechanism; 301 is the first card slot; 302 is the second card slot; 303 is the locking gear; 304 is the reset member; 305 is the rotating wheel; 306 is the linkage wheel; 307 is the traction cable; 308 is the unlocking assembly;

[0031] 4 is the torsion spring;

[0032] 5 is the cover plate; 501 is the limiting groove;

[0033] 6 is the awning rod connecting member; 601 is the limiting block;

[0034] 7 is the push handle;

[0035] 8 is the push rod;

[0036] 9 is the sunshade awning rod. Detailed implementation manners

[0037] To make the objectives, 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 in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present application without creative efforts fall within the scope of protection of the present application. It can be understood that, without conflict, some technical means described in the various embodiments herein may be replaced or combined with each other.

[0038] In the description of the specification and claims of the present application, if there are terms such as "first", "second", etc., they are only used to distinguish the described objects and do not have any sequential or technical meaning. Thus, the objects defined with "first", "second", etc. may explicitly or implicitly include one or more of such objects. And, similar terms such as "one" or "a" do not represent a quantity limitation, but rather represent the existence of at least one, and "multiple" means not less than two.

[0039] In the descriptions of the specification and claims of this application, if there are terms such as "connected", "installed", "fixed", "accommodated", etc., without special instructions, they should all be understood in a broad sense. For example, "connected" can be a split connection or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; it can be an inseparable connection or a detachable connection. Another example is that "accommodated" does not necessarily mean complete accommodation as a whole, and this concept also includes the situation of partial accommodation with a part protruding outside. For those skilled in the art, the specific meanings of the foregoing terms in this application can be understood according to specific circumstances.

[0040] In the descriptions of the specification and claims of this application, if there are terms such as "upper", "lower", "horizontal", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of clearly and simply describing this application, rather than indicating or implying that the element referred to must have a specific direction, be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and can change accordingly with the change of the orientation in which the components are placed in the drawings. For example, if the device in the figure is flipped, the element described as "below" other elements will be positioned "above" other elements.

[0041] In the descriptions of the specification and claims of this application, if there is the term "if", depending on the context, it can usually be interchanged with "when...", "at...", "in response to determining", or "in response to detecting".

[0042] In the descriptions of the specification and claims of this application, if there is "in the direction of" regarding motion, including motion with a direction component, it is not necessary to understand the term "in the direction of" as motion only in that one direction. For those skilled in the art, the specific meanings of the foregoing terms in this application can be understood according to specific circumstances.

[0043] As Figures 1 to 9 shown, a folding joint structure of a baby stroller includes a first connecting member 1 and a second connecting member 2 that are rotationally connected and have a deployed state and a folded state, and a locking mechanism 3 disposed between the first connecting member 1 and the second connecting member 2. The rotational connection portion of the first connecting member 1 has an axially extending mounting post 101. A torsion spring 4 is sleeved on the mounting post 101. One end of the torsion spring 4 is connected to the first connecting member 2, and the other end is connected to the second connecting member 3. When the first connecting member 1 and the second connecting member 2 are relatively folded, the torsion spring 4 can assist them in quickly folding.

[0044] In this embodiment, the locking mechanism 3 includes a first card slot 301 located at the rotational connection of the first connecting member 1, a second card slot 302 located at the rotational connection of the second connecting member 2, a locking gear 303 disposed between the first card slot 301 and the second card slot 302, and a reset member 304 disposed between the locking gear 303 and the second connecting member 2. A rotating wheel 305 and a linkage wheel 306 are coaxially arranged in sequence between the first connecting member 1 and the locking gear 303. The rotating wheel 305 and the linkage wheel 306 are in inclined surface cooperation, and the rotating wheel 305 is connected to the unlocking assembly 308 through a traction cable 307;

[0045] When the locking mechanism 3 is in the locked state, its locking gear 303 is simultaneously clamped in the first card slot 301 and the second card slot 302. At this time, the first connecting member 1 and the second connecting member 2 cannot perform relative rotation;

[0046] When the locking mechanism 3 is unlocked, the unlocking assembly 305 drives the rotating wheel 305 to rotate through the traction cable 307. The rotating wheel 305 drives the axial displacement of the linkage wheel 306 through inclined surface cooperation, and pushes the locking gear 303 to axially move out of the first card slot 301 and retract into the second card slot 302. At this time, the first connecting member 1 and the second connecting member 2 can perform relative rotation.

[0047] In this embodiment, the first connecting member 1 is disposed at the lower end of the push handle 7, and the second connecting member 2 is disposed at the upper end of the push rod 8. The unlocking assembly 308 is preferably disposed on the upper part of the push handle 7.

[0048] In this embodiment, the rotational connection of the second connecting member 2 has an opening 201 corresponding to the mounting post 101. The outer side of the second connecting member 2 has a cover plate 5 with a diameter larger than the opening and capable of covering the opening 201. The cover plate 5 is fixedly connected to the mounting post 201 through a locking member and can rotate with the first connecting member 1.

[0049] In this embodiment, the folding joint structure further includes a awning rod connecting member 6, and the awning rod connecting member 6 is located at both end portions of the sunshade awning rod 9. The awning rod connecting member 6 is coaxially connected to the first connecting member 1 and the second connecting member 2, and is limited in cooperation with the cover plate 5 through a limiting structure, and can rotate with the cover plate 5 and the first connecting member 1.

[0050] In this embodiment, the side of the awning rod connecting member 6 close to the cover plate 5 has a protruding limiting block 601. The outer side wall of the cover plate 5 has a plurality of limiting grooves 501 cooperating with the limiting block 601. The angle adjustment of the awning rod connecting member 6 can be realized through the clamping cooperation of the limiting block 601 and different limiting grooves 501, and the structure is simple and reliable.

[0051] The structure of the utility model is novel and concise. A torsion spring 4 is added between the first connecting member 1 (push handle) and the second connecting member 2 (push rod). After the locking mechanism 3 is unlocked, only by applying a boosting force to the first connecting member 1 (push handle) (a forward thrust in the frame of this embodiment), it can automatically fold relative to the second connecting member 2 (push rod) under the action of the torsion spring and its own gravity, realizing the rapid folding of this folding joint, without the need for full manual-assisted folding, and the operation is simple and labor-saving.

[0052] The utility model also improves the installation method of the awning rod connecting member 6. In the traditional awning rod connecting member, it rotates with the second connecting member (push rod). When the frame is folded, a force for awning head adjustment needs to be overcome. In this design, the awning rod connecting member 6 is in limit cooperation with the first connecting member 1 (push handle) and rotates therewith. When the frame is folded, there is no need to overcome the force for awning head adjustment, which is more convenient for automatic folding of the vehicle.

[0053] As a preferred implementation of the present invention, in the description of this specification, the description referring to terms such as "preferred" and "optional" means that the specific features, structures, materials or characteristics described in connection with this embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] The above embodiments are only used to illustrate the detailed solutions of the present invention. The present invention is not limited to the above detailed solutions, that is, it does not mean that the present invention must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of each raw material of the product of the present invention, the addition of auxiliary components, and the selection of specific methods, etc., all fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A folding joint structure of a baby carriage, comprising a first connecting member and a second connecting member that are rotatably connected and have a deployed state and a retracted state, and a locking mechanism disposed between the first connecting member and the second connecting member, characterized in that: The rotating connection of the first connecting member has an axially extending mounting post, on which a torsion spring is sleeved. One end of the torsion spring is connected to the first connecting member and the other end is connected to the second connecting member; when the first connecting member and the second connecting member are relatively folded, the torsion spring can assist the two to quickly fold together.

2. The folding joint structure of a baby carriage according to claim 1, characterized in that: The rotating connection of the second connecting member has an opening corresponding to the mounting post. The outer side of the second connecting member has a cover plate, which is fixedly connected to the mounting post and can rotate with the first connecting member.

3. The folding joint structure of a stroller according to claim 2, characterized in that: The folding joint structure further includes a awning rod connecting member, which is coaxially connected to the first connecting member and the second connecting member, and is limited in cooperation with the cover plate through a limiting structure, and can rotate with the cover plate and the first connecting member.

4. The folding joint structure of a baby carriage according to claim 3, wherein: One side of the awning rod connecting member close to the cover plate has a protruding limiting block, and the outer side wall of the cover plate has a plurality of limiting grooves cooperating with the limiting block. The angle adjustment of the awning rod connecting member can be realized by the clamping cooperation of the limiting block and different limiting grooves.

5. The folding joint structure of a stroller according to claim 3, characterized in that: The first connecting member is arranged at the lower end of the push handle, and the second connecting member is arranged at the upper end of the push rod.

6. The folding joint structure of a stroller according to claim 1, wherein: The locking mechanism includes a first clamping groove at the rotating connection of the first connecting member, a second clamping groove at the rotating connection of the second connecting member, a locking gear arranged between the first clamping groove and the second clamping groove, and a reset member arranged between the locking gear and the second connecting member. A rotating wheel and a linkage wheel are coaxially arranged in sequence between the first connecting member and the locking gear. The rotating wheel and the linkage wheel are in inclined surface cooperation, and the rotating wheel is connected to the unlocking assembly through a traction cable; When the locking mechanism is in the locked state, its locking gear is simultaneously clamped in the first clamping groove and the second clamping groove, and at this time, the first connecting member and the second connecting member cannot rotate relatively; When the locking mechanism is unlocked, the unlocking assembly drives the rotating wheel to rotate through the traction cable. The rotating wheel drives the linkage wheel to axially displace through inclined surface cooperation, and pushes the locking gear to axially move out of the first clamping groove and retract into the second clamping groove. At this time, the first connecting member and the second connecting member can rotate relatively.

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