Linkage baby carriage structure

Abstract

The utility model discloses a linkage baby carriage structure which comprises a carriage frame and a seat frame, and the carriage frame comprises a front foot pipe set, a rear foot pipe set, a handle pipe set and a joint set. The joint group comprises a middle joint, an inner joint and an outer joint which are pivotally connected through the same rotating shaft, and the lower end of the handlebar tube group is mounted at the middle joint; the upper end of the front foot pipe group is mounted on the inner joint, and the upper end of the rear foot pipe group is mounted on the outer joint; a first locking structure is arranged between the inner joint and the outer joint; the middle joint and the handle pipe assembly are provided with a second locking structure, when in an unfolded state, the first locking structure enables pivoting of the inner joint and the outer joint support to be locked, the second locking structure enables pivoting between the middle joint and the inner joint to be locked, and at the moment, the connecting rod assembly is in a limiting state; when folding is needed, the second locking structure is unlocked, the first locking structure is driven to be unlocked, and the first connecting rod assembly moves along with the second locking structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of children's pushchair, especially to a linkage children's pushchair structure. BACKGROUND

[0002] The pushchair is mainly used for the tool car designed for the convenience of children's outdoor activities.

[0003] The existing children's pushchair generally comprises a front tube group, a rear tube group, a handle tube group and a seat frame, the existing seat frame is generally designed separately,

[0004] Therefore, there are two problems in the market: 1. The seat frame is designed as a whole, so the volume is large after folding; 2. The linkage between the seat frame and the frame is poor, so the folding convenience is affected. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a linkage children's pushchair structure, which aims to improve the existing children's pushchair structure, and to realize the linkage between the frame and the seat frame, while the structure is stable and convenient to use.

[0006] In order to achieve the above purpose, the utility model provides a linkage children's pushchair structure, comprising:

[0007] The frame comprises a front tube group, a rear tube group, a handle tube group and a joint group;

[0008] The joint group comprises a middle joint, an inner joint and an outer joint connected by the same pivot shaft,

[0009] The lower end of the handle tube group is installed on the middle joint;

[0010] The upper end of the front tube group is installed on the inner joint, and the upper end of the rear tube group is installed on the outer joint;

[0011] The first locking structure is arranged between the inner joint and the outer joint,

[0012] The seat frame is provided with a connecting rod assembly between the bottom of the seat frame, the upper part of the front tube group and the outer joint;

[0013] The middle joint and the handle tube group are provided with a second locking structure,

[0014] When in the unfolded state, the first locking structure locks the pivoting of the inner joint and the outer joint bracket, and the second locking structure locks the pivoting between the middle joint and the inner joint, at this time the connecting rod assembly is in the limiting state;

[0015] When folding is needed, the second locking structure is unlocked, and the first locking structure is unlocked and the first connecting rod assembly is moved.

[0016] In actual design, the mutual rotation of the middle joint, the inner joint and the outer joint is realized through the same rotating shaft, and then the relative rotation of the front pipe group, the rear pipe group and the handle pipe group is realized when folding is needed, and at the same time, the connecting rod assembly is arranged between the seat frame and the frame, which not only ensures the support when unfolding (forming multiple stable triangular structures), but also can realize the linkage folding between the seat frame and the frame when folding;

[0017] When unfolding and locking are needed, first, the front pipe group and the rear pipe group move away from each other with the rotating shaft as the axis point, and at the same time, the seat frame is unfolded under the action of the connecting rod assembly, and when the front roller and the rear roller are in the maximum stroke position, the inner joint and the outer joint are clamped by the first locking structure,

[0018] At the same time, the handle pipe group is also unfolded, and the second locking structure locks the middle joint and the inner joint, thereby realizing a stable unfolded state.

[0019] In actual design, in order to ensure the stable gravity center of the structure, the inner joint is provided with two pieces and is arranged at the two sides of the middle joint, and the outer joint is provided with two pieces and is arranged at the outer side of the inner joint. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic view of the utility model;

[0021] Figure 2 It is a side view of the utility model in an unfolded state;

[0022] Figure 3 It is a sectional view of the utility model after the second locking structure is unlocked;

[0023] Figure 4 It is a partial side view of the frame;

[0024] Figure 5 It is a partial exploded view of the frame;

[0025] Figure 6 It is a partial sectional view of the joint group;

[0026] Figure 7 It is a switching schematic view of the trolley from unfolding to folding.

[0027] In the drawings,

[0028] 1 is a frame, 11 is a front pipe group, 12 is a rear pipe group, 13 is a handle pipe group, 131 is a lower handle pipe, 132 is an upper handle pipe,

[0029] 2 is a joint group, 21 is a middle joint, 22 is an inner joint, 23 is an outer joint,

[0030] 3 is the seat frame, 30 is the base, 31 is the swivel seat, 32 is the backrest frame, 33 is the front linkage tube, and 34 is the upper frame.

[0031] 4 is the connecting rod assembly, 41 is the first upper support rod, 42 is the first lower support rod, 43 is the middle support rod, 44 is the rear support rod, and 45 is the stop.

[0032] 51 is the first slot, 52 is the first pin, and 53 is the guide groove.

[0033] 6 is the locking seat, 61 is the second locking pin, 62 is the hook, and 63 is the top.

[0034] 7 is the drive seat, and 70 is the top spring. Detailed Implementation

[0035] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0038] like Figures 1 to 7 As shown, a linked children's stroller structure includes:

[0039] The frame 1 includes a front leg tube assembly 11, a rear leg tube assembly 12, a handlebar tube assembly 13, and a joint assembly 2.

[0040] The lower part of the front tube group is provided with two front rollers arranged at intervals, and the rear tube group is provided with rear rollers arranged at intervals;

[0041] The joint group 2 comprises a middle joint 21, an inner joint 22 and an outer joint 23 which are pivotally connected by the same rotating shaft,

[0042] The lower end of the handle tube group 13 is mounted on the middle joint 21;

[0043] The upper end of the front tube group 11 is mounted on the inner joint 22, and the upper end of the rear tube group 12 is mounted on the outer joint 23;

[0044] The first locking structure is arranged between the inner joint 22 and the outer joint 23,

[0045] The seat frame 3, the bottom of the seat frame 3, the upper part of the front tube group 11 and the outer joint 23 are provided with a linkage assembly 4;

[0046] The middle joint 21 and the handle tube group 13 are provided with the second locking structure,

[0047] When in the unfolded state, the first locking structure pivotally locks the inner joint 22 and the outer joint 23, and the second locking structure pivotally locks the middle joint 21 and the inner joint 22, and at this time the linkage assembly 4 is in the limiting state;

[0048] When folding is needed, the second locking structure is unlocked, and the first locking structure is unlocked and the first linkage assembly 4 is moved.

[0049] In actual design, the mutual rotation of the middle joint 21, the inner joint 22 and the outer joint 23 is realized by the same rotating shaft, and the relative rotation of the front tube group 11, the rear tube group 12 and the handle tube group 13 when folding is needed is realized, and at the same time, the linkage assembly 4 is arranged between the seat frame 3 and the frame 1, which not only ensures the support when unfolding (forming multiple stable triangular structures), but also realizes the linkage folding between the seat frame 3 and the frame 1 when folding;

[0050] When unfolding and locking are needed, first, the front tube group 11 and the rear tube group 12 move away from each other with the rotating shaft as the axis point, and at the same time, the seat frame 3 is unfolded under the action of the linkage assembly 4, and when the front roller and the rear roller are in the maximum stroke position, the inner joint 22 and the outer joint 23 are clamped by the first locking structure,

[0051] At the same time, the handle tube group 13 is also unfolded, and the second locking structure locks the middle joint 21 and the inner joint 22, thereby realizing a stable unfolded state.

[0052] In actual design, in order to ensure the stable center of gravity of the structure, the inner joint 22 is provided with two pieces and is arranged at the two sides of the middle joint 21, and the outer joint 23 is provided with two pieces and is arranged at the outer side of the inner joint 22.

[0053] Specifically, the first locking structure comprises a first clamping groove 51 arranged on the inner joint 22, and the rear leg pipe is provided with a first clamping pin 52 matched with the first clamping groove 51, when the first clamping pin 52 is clamped in the first clamping groove 51, the relative rotation of the front leg pipe group 11 and the rear leg pipe group 12 is locked, and in the preferred embodiment, the first clamping groove 51 is in an arc shape and is arranged at the rear wall position of the inner joint 22.

[0054] In the embodiment of the utility model, the middle joint 21 is provided with a guide groove 53, and the first clamping pin 52 can slide along the length direction of the guide groove 53, thereby realizing the mutual linkage among the three.

[0055] Specifically, the connecting rod assembly 4 comprises a first upper support rod 41, a first lower support rod 42, a rear support rod 44 and a middle support rod 43.

[0056] The upper end of the first upper support rod 41 is pivotally connected with the front part of the seat frame 3,

[0057] The lower end of the first lower support rod 42 is pivotally connected with the upper part of the front leg pipe group 11,

[0058] The lower end of the first upper support rod 41 and the upper end of the first lower support rod 42 are pivotally connected and are provided with a limiting structure;

[0059] The upper end and the lower end of the rear support rod 44 are respectively pivotally connected with the rear part of the seat frame 3 and the outer joint 23;

[0060] The two ends of the middle support rod 43 are respectively pivotally connected with the first lower support rod 42 and the middle support rod 43.

[0061] Through the cooperation of the connecting rod assembly 4, the linkage folding and rotating unfolding of the seat frame 3 are realized, and the corresponding supporting effect is also realized.

[0062] In one of the embodiments, the lower end of the rear support rod 44 is pivotally connected with the first clamping pin.

[0063] In the embodiment of the utility model, the lower end of the rear support rod 44 and the rear end of the middle support rod 43 are located at the same pivot end.

[0064] Specifically, the limiting structure is a blocking part arranged on the upper end of the first lower support rod 42, the blocking part is located at the rear part position of the first lower support rod 42, and the first lower support rod 42 is used for limiting the swing of the first upper support rod 41, thereby realizing stable limiting.

[0065] In the embodiment of the utility model, the inner joint 22 is equipped with the second pin 61,

[0066] The second locking structure comprises a locking seat 6 swingingly installed at the middle joint 21, the front end of the locking seat 6 is a hook portion 62, the hook portion 62 can swing between a position of being hooked with the second pin 61 and a position of being away from the second pin 61, thereby realizing mutual locking between the middle joint 21 and the inner joint 22.

[0067] Specifically, the lower part of the handle tube group is slidably installed with a driving seat 7,

[0068] The rear end of the locking seat 6 is a top portion 63;

[0069] A top spring 70 is arranged between the bottom of the driving seat 7 and the bottom of the handle tube group 13, the top spring 70 is used for exerting upward elastic force on the driving seat 7 and making the top portion 63 upward, thereby exerting elastic force on the hook portion 62 for being hooked with the second pin 61.

[0070] In the embodiment of the utility model, the handle tube group 13 comprises a lower handle tube 131 and an upper handle tube 132 slidably installed in the inner cavity of the lower handle tube 131,

[0071] The driving seat 7 is slidably installed in the lower handle tube 131, when the upper handle tube 132 extends into the inner cavity, can abut against the upper end of the driving seat 7 and drive the driving seat 7 to move downward, thereby making the hook portion 62 away from the second pin 61, thereby realizing unlocking, specifically, a locking structure is arranged between the upper handle tube 132 and the lower handle tube 131, thereby realizing locking between the two.

[0072] Specifically, the seat frame 3 comprises a base 30, a rotating seat 31 pivotally installed at the base 30, a backrest frame 32 pivotally installed at the rear part of the rotating seat 31, a front linkage pipe 33 and an upper enclosing frame 34;

[0073] The rear end of the upper enclosing frame 34 is pivotally installed at the two sides of the middle part of the backrest frame 32,

[0074] The backrest frame 32 and the base 30 are equipped with switching devices for adjusting the inclination thereof, in actual design, the switching devices can realize inclination angle adjustment of the backrest, also can realize mutual folding between the backrest and the base 30, thereby realizing overall folding of the trolley,

[0075] When the seat frame 3 is folded, the backrest is leaned forward, then the handle tube group is unlocked, thereby directly lifting the handle provided at the rear part of the base 30 as a base point, namely, the overall folding and storage of the trolley can be realized.

[0076] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, as described in the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A linked child's pushchair structure characterised in that, The utility model relates to a folding bicycle, comprising: a frame including a front tube group, a rear tube group and a handle tube group and a joint group; the joint group includes a middle joint, an inner joint and an outer joint pivoted by the same pivot, the lower end of the handle tube group is installed on the middle joint; the upper end of the front tube group is installed on the inner joint, and the upper end of the rear tube group is installed on the outer joint; a first locking structure is arranged between the inner joint and the outer joint, a seat frame, a first link assembly is arranged between the bottom of the seat frame, the upper part of the front tube group and the outer joint; the middle joint and the handle tube group are provided with a second locking structure, when in the unfolded state, the first locking structure pivots the inner joint and the outer joint bracket, and the second locking structure pivots the middle joint and the inner joint, at this time, the first link assembly is in the limiting state; when folding is needed, the second locking structure is unlocked, and the first locking structure is unlocked and the first link assembly is moved.

2. The linked child stroller structure of claim 1, wherein: the first locking structure includes a first clamping groove arranged on the inner joint, and the rear tube is provided with a first clamping pin matched with the first clamping groove, when the first clamping pin is clamped in the first clamping groove, the relative rotation of the front tube group and the rear tube group is locked.

3. The linked child stroller structure of claim 2, wherein: the middle joint is provided with a guide groove, and the first clamping pin can slide along the length direction of the guide groove.

4. The linked child stroller structure of claim 1, wherein: the link assembly includes a first upper support rod, a first lower support rod, a rear support rod and a middle support rod; the upper end of the first upper support rod is pivoted with the front part of the seat frame, the lower end of the first lower support rod is pivoted with the upper part of the front tube group, the lower end of the first upper support rod and the upper end of the first lower support rod are pivoted and provided with a limiting structure; the upper end and the lower end of the rear support rod are respectively pivoted with the rear part of the seat frame and the outer joint; the two ends of the middle support rod are respectively pivoted with the first lower support rod and the middle support rod.

5. The linked child cart arrangement of claim 4, wherein: the rear end of the middle support rod and the lower end of the rear support rod are located at the same pivoting end.

6. The linked child stroller structure of claim 4, wherein: the limiting structure is a blocking part arranged on the upper end of the first lower support rod, the blocking part is located at the rear part of the first lower support rod, and the first lower support rod is used for limiting the swing of the first upper support rod.

7. The linked child stroller structure of claim 1, wherein: the inner joint is provided with a second clamping pin, the second locking structure includes a locking seat pivoted on the middle joint, the front end of the locking seat is a hook part, and the hook part can swing between the position of being hooked with the second clamping pin and the position of being away from the second clamping pin.

8. The linked child cart arrangement of claim 7, wherein: the lower part of the handle tube group is slidably installed with a driving seat, the rear end of the locking seat is a top part; a top spring is arranged between the bottom of the driving seat and the bottom of the handle tube group, the top spring is used for exerting upward elastic force on the driving seat and making the top part upward, and then exerting elastic force on the hook part for being hooked with the second clamping pin.

9. The linked child cart arrangement of claim 8, wherein: the handle tube group includes a lower handle tube and an upper handle tube slidably installed in the inner cavity of the lower handle tube, the driving seat is slidably installed in the lower handle tube, when the upper handle tube extends into the inner cavity, the upper end of the driving seat can be abutted and the driving seat is driven to move downward, and then the hook part is away from the second clamping pin.

10. The linked child stroller structure of claim 8, wherein: the seat frame includes a base, a rotating seat pivoted on the base, a backrest frame pivoted on the rear part of the rotating seat, a front linkage tube and an upper surrounding frame; the rear end of the upper surrounding frame is pivoted on the two sides of the middle part of the backrest frame, The backrest frame and the base are provided with switching devices for adjusting the inclination thereof.

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