CN213566088U

CN213566088U - Four-wheel baby stroller

Info

Publication number: CN213566088U
Application number: CN202021621536.2U
Authority: CN
Inventors: 张盛
Original assignee: Ningbo Wentai Sport Equipment Co ltd
Current assignee: Ningbo Wentai Sport Equipment Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-06-29
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a four-wheel baby stroller, including the hand (hold), the seat, go up the frame, lower frame, two front wheel groups and two rear wheel groups, it is provided with first interlock folding mechanism and second interlock folding mechanism to go up between frame and the lower frame, two rear wheel groups are installed respectively on first interlock folding mechanism and second interlock folding mechanism, the left side of lower frame front end is provided with first flattening mechanism, the right side of lower frame front end is provided with second flattening mechanism, two front wheel groups are installed respectively on first flattening mechanism and second flattening mechanism, can fold the front wheel group of installing on it to be on a parallel with ground on first flattening mechanism and the second flattening mechanism, when folding hand (hold) and last frame, first interlock folding mechanism and second interlock folding mechanism can fold two rear wheel groups to be on a parallel with ground in step; the folding bicycle has the advantages that the two front wheel sets and the two rear wheel sets are parallel to the ground after being folded, the volume of the folded bicycle is small, and the folding bicycle is convenient to carry and store.

Description

Four-wheel baby stroller

Technical Field

The utility model relates to a baby's handcart especially relates to a four-wheel baby's handcart.

Background

The existing four-wheeled baby stroller generally comprises a handle, a seat, an upper frame, a lower frame, two front wheel sets and two rear wheel sets, wherein the two front wheel sets are arranged on the left side and the right side of the front end of the lower frame in an bilateral symmetry manner, the two rear wheel sets are arranged on the left side and the right side of the rear end of the lower frame in an bilateral symmetry manner, the upper frame is arranged on the lower frame in a rotatable manner, the seat is arranged on the upper frame in a detachable manner, the handle is arranged on the upper frame in a rotatable manner, and a locking assembly is arranged between the handle and the upper frame. When the four-wheeled baby stroller in the unfolded state is folded, the seat is firstly detached, then the locking of the locking assembly is released, the handle is pushed or pulled forwards to rotate relative to the upper frame, the upper frame synchronously rotates relative to the lower frame, and therefore the handle and the upper frame are folded towards the direction of the lower frame. However, after the existing four-wheeled baby stroller is folded, the two front wheel sets and the two rear wheel sets are perpendicular to the ground, and the volume of the folded whole stroller is larger, so that the stroller is inconvenient to carry and store.

Disclosure of Invention

The utility model aims to solve the technical problem that a folding back two front wheelsets and two rear wheelsets all are on a parallel with ground is provided, and the volume ratio after whole car receipts are closed is smaller, portable and the four-wheel baby's handcart of accomodating.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a four-wheeled baby stroller comprises a handle, a seat, an upper frame, a lower frame, two front wheel sets and two rear wheel sets, wherein the upper frame is arranged on the lower frame in a rotatable manner, the seat is arranged on the upper frame in a detachable manner, the handle is arranged on the upper frame in a rotatable manner, a locking assembly is arranged between the handle and the upper frame, the stroller is characterized in that a first linkage folding mechanism and a second linkage folding mechanism are arranged between the upper frame and the lower frame, the two rear wheel sets are respectively arranged on the first linkage folding mechanism and the second linkage folding mechanism, a first leveling mechanism is arranged on the left side of the front end of the lower frame, a second leveling mechanism is arranged on the right side of the front end of the lower frame, the two front wheel sets are respectively arranged on the first leveling mechanism and the second leveling mechanism, the first leveling mechanism and the second leveling mechanism can fold the front wheel set arranged on the first leveling mechanism and the second leveling mechanism to be parallel to the ground, and when the handle and the upper frame are folded, the first linkage folding mechanism and the second linkage folding mechanism can synchronously fold the two rear wheel sets to be parallel to the ground.

The first linkage folding mechanism comprises a first connecting rod, a second connecting rod, a first fixed seat, a first connecting block and a first sliding block, the first sliding block is arranged on the lower frame and can move back and forth along the lower frame under stress, the first fixed seat is arranged at the left end of the rear part of the lower frame in a rotatable mode, a rear wheel group positioned at the left side is arranged on the first fixed seat, the first connecting block is arranged on the front side wall of the first fixed seat in a rotatable mode, one end of the first connecting rod is arranged on the first sliding block in a rotatable mode, the other end of the first connecting rod is arranged on the upper frame in a rotatable mode, one end of the second connecting rod is arranged on the first connecting block in a rotatable mode, and the other end of the second connecting rod is arranged on the first sliding block in a rotatable mode, the second linkage folding mechanism and the first linkage folding mechanism are in a bilateral symmetry structure, and the rear wheel group on the right side is arranged on the second linkage folding mechanism. In this structure, when folding the frame of going up, go up the frame and rotate to being close to the frame direction of getting off, first connecting rod among the first linkage folding mechanism promotes first slider and moves forward, and the second connecting rod moves forward along with first slider this moment, drives first fixing base and folds the messenger to be located left rear wheel group and be on a parallel with ground to frame below down via first connecting block, and the second linkage folding mechanism makes the rear wheel group that is located the right side be on a parallel with ground like this, and folding process is simple laborsaving.

The first flattening mechanism comprises a second fixing seat, a folding buckle, a first spring, a fixing sheet and a fixing clamp, the second fixing seat is rotatably arranged at the left end of the front part of the lower frame, a buckle is arranged on the rear side wall of the second fixing seat, a first cavity is arranged at the front part of the lower frame, the folding buckle, the first spring and the fixing sheet are arranged in the first cavity from top to bottom, the fixing sheet is fixed in the first cavity, the lower end of the first spring is fixed on the fixing sheet, the upper end of the first spring is fixed on the folding buckle, a first clamping groove is formed in the folding buckle, the fixing clamp is arranged below the front part of the upper frame, a clamping opening is formed in the fixing clamp, each front wheel group comprises a front wheel frame and a front wheel arranged on the front wheel frame respectively, the front wheel frame that is located left front wheelset be located the below of second fixing base and install the second fixing base on, when being located left front wheelset and being in the state of expanding, the receipts detain and be in first cavity department stretch out, the buckle with first draw-in groove joint, press down the receipts detain when, the buckle with the receipts detain and separate, the second beat flat mechanism be bilateral symmetry structure. In this structure, when buckle and first draw-in groove joint, first fixing base is fixed and can not rotate, when folding front wheelset, press down to receive to close the knot and make buckle and receive to close and detain and separate, rotate the second fixing base, the front wheelset rotates along with the second fixing base and folds to frame below, when the front wheelset is on a parallel with ground, the preceding wheel carrier card of front wheelset is gone into in the grip opening and is fixed, the second mechanism of leveling adopts the principle the same with first mechanism of leveling to level the front wheelset that is located the right side, folding process is simple laborsaving.

The upper frame comprises an upper frame pipe, a mounting frame for mounting the seat and the handle, a first base, a second slider, a third slider, a steel cable, a second spring, a first pipe plug, a second pipe plug, a vehicle collecting buckle, a vehicle collecting block, a second base, a first connecting pin and a second connecting pin, the vehicle collecting block is fixedly sleeved on the mounting frame, a second clamping groove and a third clamping groove are arranged on the vehicle collecting block, the upper part of the second base is sleeved on the vehicle collecting block, the first base is rotatably mounted on the lower frame, a first insertion hole with an upper end open is formed in the first base, the lower part of the upper frame pipe is inserted into the first insertion hole, a second insertion hole with a lower end open is formed in the second base, the upper part of the upper frame pipe is inserted into the second insertion hole, the first pipe plug and the second pipe plug are both located in the upper frame pipe, the second pipe plug is located above the first pipe plug, the second sliding block is arranged in the first pipe plug and can move up and down in the first pipe plug under stress, the lower end of the second spring is fixed on the second sliding block, the upper end of the second spring abuts against the first pipe plug, the first connecting pin penetrates through the first base, the upper frame pipe, the first pipe plug and the second sliding block, the first connecting pin can move up and down synchronously along with the second sliding block, the lower frame is provided with a positioning groove, when the upper frame is in an unfolding state, the first connecting pin is clamped into the positioning groove, and at the moment, the upper frame cannot rotate relative to the lower frame, the third slider is arranged in the second pipe plug and can move up and down in the second pipe plug under the action of stress, the second connecting pin penetrates through the second base, the second pipe plug and the third slider, the two ends of the second connecting pin are inserted into the car collecting block, the second connecting pin can move up and down along with the third slider, the lower end of the steel cable is fixed on the second slider, the upper end of the steel cable is fixed on the third slider, the car collecting buckle is rotatably arranged on the second base, a torsion spring is arranged between the car collecting buckle and the second base, a clamping pin is arranged on the car collecting buckle, when the upper frame is in an unfolding state, the clamping pin is clamped into the second clamping groove under the action of the torsion spring for internal fixation, when the vehicle folding buckle is pulled to enable the clamping pin to be separated from the second clamping groove and then clamped into the third clamping groove for fixation, the first connecting pin is separated from the positioning groove. In this structure, when the bayonet lock is fixed in the second draw-in groove, the mounting bracket can not rotate for last frame pipe, when pulling and receive the car and detain when making the bayonet lock break away from the second draw-in groove, the mounting bracket can rotate for last frame pipe, rotate the mounting bracket this moment and make the bayonet lock card go into in the third draw-in groove, at the rotation mounting bracket in-process, receive the car piece along with the mounting bracket synchronous rotation and drive second connecting pin rebound, the second connecting pin drives third slider rebound, the third slider passes through cable wire pulling second slider rebound, the second slides and drives first connecting pin rebound, when the bayonet lock card goes into the third draw-in groove, first connecting pin rebound extremely breaks away from the constant head tank, first base can rotate for lower frame this moment and carry out the folding of frame, the folding process is simple laborsaving.

Compared with the prior art, the utility model has the advantages that the first linkage folding mechanism and the second linkage folding mechanism are arranged between the upper frame and the lower frame, the two rear wheel sets are respectively arranged on the first linkage folding mechanism and the second linkage folding mechanism, the first flattening mechanism is arranged on the left side of the front end of the lower frame, the second flattening mechanism is arranged on the right side of the front end of the lower frame, the two front wheel sets are respectively arranged on the first flattening mechanism and the second flattening mechanism, the front wheel sets arranged on the first flattening mechanism and the second flattening mechanism can be folded to be parallel to the ground, when the handle and the upper frame are folded, the first linkage folding mechanism and the second linkage folding mechanism can synchronously fold the two rear wheel sets to be parallel to the ground, therefore, the utility model discloses two front wheel sets and two rear wheel sets are all parallel to the ground after being folded, the volume of the whole vehicle after being folded is smaller, is convenient to carry and store.

Drawings

FIG. 1 is a perspective view of the four-wheeled stroller of the present invention in an expanded state;

FIG. 2 is a perspective view of the four-wheeled stroller of the present invention in a folded state;

FIG. 3 is an exploded view of the upper frame, the lower frame and the rear wheels of the four-wheeled stroller of the present invention;

FIG. 4 is an exploded view of the upper frame and the lower frame of the four-wheeled stroller of the present invention;

fig. 5 is a schematic view of the upper frame of the four-wheeled stroller of the present invention in an expanded state;

FIG. 6 is a schematic view of the upper frame of the four-wheeled stroller of the present invention during the folding process;

fig. 7 is a schematic view of the upper frame of the four-wheeled stroller of the present invention when the folding is completed;

FIG. 8 is a partial exploded view of the lower frame and front wheel set of the four-wheeled stroller of the present invention;

fig. 9 is a partial exploded view of the lower frame of the four-wheeled baby stroller of the present invention;

FIG. 10 is a partial cross-sectional view of the connection between the lower frame and the front wheel set of the four-wheeled stroller of the present invention;

FIG. 11 is a schematic view of the front wheel set of the four-wheeled stroller of the present invention in an extended position;

FIG. 12 is a schematic view of the front wheel set of the four-wheeled stroller of the present invention during the folding process;

fig. 13 is a schematic view of the front wheel set of the four-wheeled stroller of the present invention when the folding is completed.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example (b): as shown in the figure, the four-wheel baby stroller comprises a handle 1, a seat 2, an upper frame 3, a lower frame 4, two front wheel sets 5 and two rear wheel sets 6, wherein the upper frame 3 is rotatably arranged on the lower frame 4, the seat 2 is detachably arranged on the upper frame 3, the handle 1 is rotatably arranged on the upper frame 3, a locking component is arranged between the handle 1 and the upper frame 3, a first linkage folding mechanism and a second linkage folding mechanism are arranged between the upper frame 3 and the lower frame 4, the two rear wheel sets 6 are respectively arranged on the first linkage folding mechanism and the second linkage folding mechanism, a first flattening mechanism is arranged on the left side of the front end of the lower frame 4, a second flattening mechanism is arranged on the right side of the front end of the lower frame 4, the two front wheel sets 5 are respectively arranged on the first flattening mechanism and the second flattening mechanism, the first flattening mechanism and the second flattening mechanism can fold the front wheel sets 5 on the first flattening mechanism to be parallel to the ground, when folding hand (hold) 1 and last frame 3, first interlock folding mechanism and second interlock folding mechanism can fold two rear wheel group 6 to being on a parallel with ground in step.

In this embodiment, the first linkage folding mechanism includes a first connecting rod 7, a second connecting rod 8, a first fixing seat 9, a first connecting block 10 and a first sliding block 11, the first sliding block 11 is installed on the lower frame 4 and can move back and forth along the lower frame 4 under stress, the first fixing seat 9 is installed at the left end of the rear portion of the lower frame 4 in a rotatable manner, the rear wheel set 6 located at the left side is installed on the first fixing seat 9, the first connecting block 10 is installed on the front side wall of the first fixing seat 9 in a rotatable manner, one end of the first connecting rod 7 is installed on the first sliding block 11 in a rotatable manner, the other end of the first connecting rod 7 is installed on the upper frame 3 in a rotatable manner, one end of the second connecting rod 8 is installed on the first connecting block 10 in a rotatable manner, the other end of the second connecting rod 8 is installed on the first sliding block 11 in a rotatable manner, the second linkage folding mechanism and the first linkage folding mechanism are in a, the rear wheel set 6 on the right side is mounted on the second interlocking folding mechanism.

In this embodiment, the first leveling mechanism includes a second fixing seat 12, a folding buckle 13, a first spring 14, a fixing plate 15 and a fixing clip 16, the second fixing seat 12 is rotatably installed at the left end of the front portion of the lower frame 4, a buckle 17 is disposed on the rear side wall of the second fixing seat 12, a first cavity 18 is disposed at the front portion of the lower frame 4, the folding buckle 13, the first spring 14 and the fixing plate 15 are disposed in the first cavity 18 from top to bottom, the fixing plate 15 is fixed in the first cavity 18, the lower end of the first spring 14 is fixed on the fixing plate 15, the upper end of the first spring 14 is fixed on the folding buckle 13, the folding buckle 13 has a first clamping groove 19, the fixing clip 16 is installed below the front portion of the upper frame 3, a clamping opening 20 is disposed on the fixing clip 16, each front wheel set 5 includes a front wheel frame 51 and a front wheel 52 installed on the front wheel frame 51, the front wheel frame 51 of the front wheel set 5 on the left side is located below the second fixing seat 12 and installed on the 12, when the front wheel set 5 on the left side is in the unfolded state, the folding buckle 13 extends out of the first cavity 18, the buckle 17 is clamped with the first clamping groove 19, when the folding buckle 13 is pressed downwards, the buckle 17 is separated from the folding buckle 13, and the second leveling mechanism is in a bilateral symmetry structure.

In this embodiment, the upper frame 3 includes an upper frame tube 20, a mounting frame 21 for mounting the seat 2 and the handle 1, a first base 22, a second slider 23, a third slider 24, a steel cable 25, a second spring 26, a first pipe plug 27, a second pipe plug 28, a vehicle folding buckle 29, a vehicle folding block 30, a second base 31, a first connecting pin 32 and a second connecting pin 33, the vehicle folding block 30 is fixedly sleeved on the mounting frame 21, a second clamping groove 34 and a third clamping groove 35 are arranged on the vehicle folding block 30, an upper portion of the second base 31 is sleeved on the vehicle folding block 30, the first base 22 is rotatably mounted on the lower frame 4, a first insertion hole with an upper end open is arranged on the first base 22, a lower portion of the upper frame tube 20 is inserted into the first insertion hole, a second insertion hole with a lower end open is arranged on the second base 31, an upper portion of the upper frame tube 20 is inserted into the second insertion hole, the first pipe plug 27 and the second pipe plug 28 are both located in the upper frame tube 20, the second pipe plug 28 is located above the first pipe plug 27, the second sliding block 23 is arranged inside the first pipe plug 27 and is stressed to move up and down inside the first pipe plug 27, the lower end of the second spring 26 is fixed on the second sliding block 23, the upper end of the second spring 26 is abutted against the first pipe plug 27, the first connecting pin 32 penetrates through the first base 22, the upper frame pipe 20, the first pipe plug 27 and the second sliding block 23, the first connecting pin 32 can synchronously move up and down along with the second sliding block 23, the lower frame 4 is provided with a positioning groove 36, when the upper frame 3 is in an unfolded state, the first connecting pin 32 is clamped into the positioning groove 36, at the moment, the upper frame 3 cannot rotate relative to the lower frame 4, the third sliding block 24 is arranged inside the second pipe plug 28 and is stressed to move up and down inside the second pipe plug 28, the second connecting pin 33 penetrates through the second base 31, the second pipe plug 28 and the third sliding block 24, and two ends of the second connecting pin 33 are inserted into the vehicle collecting block 30, the second connecting pin 33 can move up and down along with the third sliding block 24, the lower end of the steel cable 25 is fixed on the second sliding block 23, the upper end of the steel cable 25 is fixed on the third sliding block 24, the car collection buckle 29 is rotatably mounted on the second base 31, a torsion spring 37 is arranged between the car collection buckle 29 and the second base 31, a bayonet 38 is arranged on the car collection buckle 29, when the upper frame 3 is in an unfolded state, the bayonet 38 is clamped into the second clamping groove 34 under the action of the torsion spring 37 for fixation, and when the car collection buckle 29 is pulled to enable the bayonet 38 to be separated from the second clamping groove 34 and then clamped into the third clamping groove 35 for fixation, the first connecting pin 32 is separated from the positioning groove 36.

Claims

1. A four-wheeled baby stroller comprises a handle, a seat, an upper frame, a lower frame, two front wheel sets and two rear wheel sets, wherein the upper frame is arranged on the lower frame in a rotatable manner, the seat is arranged on the upper frame in a detachable manner, the handle is arranged on the upper frame in a rotatable manner, a locking assembly is arranged between the handle and the upper frame, the stroller is characterized in that a first linkage folding mechanism and a second linkage folding mechanism are arranged between the upper frame and the lower frame, the two rear wheel sets are respectively arranged on the first linkage folding mechanism and the second linkage folding mechanism, a first leveling mechanism is arranged on the left side of the front end of the lower frame, a second leveling mechanism is arranged on the right side of the front end of the lower frame, the two front wheel sets are respectively arranged on the first leveling mechanism and the second leveling mechanism, the first leveling mechanism and the second leveling mechanism can fold the front wheel set arranged on the first leveling mechanism and the second leveling mechanism to be parallel to the ground, and when the handle and the upper frame are folded, the first linkage folding mechanism and the second linkage folding mechanism can synchronously fold the two rear wheel sets to be parallel to the ground.

2. The four-wheeled stroller as recited in claim 1, wherein said first linkage folding mechanism comprises a first link, a second link, a first fixed seat, a first link block and a first slider, said first slider is mounted on said lower frame and is forced to move back and forth along said lower frame, said first fixed seat is rotatably mounted on the left end of the rear portion of said lower frame, the rear wheel set located on the left side is mounted on said first fixed seat, said first link block is rotatably mounted on the front wall of said first fixed seat, one end of said first link is rotatably mounted on said first slider, the other end of said first link is rotatably mounted on said upper frame, one end of said second link is rotatably mounted on said first link block, the other end of the second connecting rod is arranged on the first sliding block in a rotatable mode, the second linkage folding mechanism and the first linkage folding mechanism are in a bilateral symmetry structure, and the rear wheel set on the right side is arranged on the second linkage folding mechanism.

3. The four-wheeled stroller as recited in claim 1, wherein the first leveling mechanism comprises a second fixing base, a foldable buckle, a first spring, a fixing plate and a fixing clip, the second fixing base is rotatably mounted at the left end of the front portion of the lower frame, a buckle is disposed on the rear side wall of the second fixing base, a first cavity is disposed at the front portion of the lower frame, the foldable buckle, the first spring and the fixing plate are sequentially disposed in the first cavity from top to bottom, the fixing plate is fixed in the first cavity, the lower end of the first spring is fixed on the fixing plate, the upper end of the first spring is fixed on the foldable buckle, the foldable buckle has a first engaging groove, and the fixing clip is mounted below the front portion of the upper frame, the fixation clamp on be provided with the centre gripping mouth, every preceding wheelset include the preceding wheel carrier respectively and install the preceding wheel carrier on the front wheel, the preceding wheel carrier that is located left preceding wheelset be located the below of second fixing base and install the second fixing base on, when being located left preceding wheelset and being in the state of expanding, the receipts close and be in first cavity department stretch out, the buckle with first draw-in groove joint, press down the receipts close when, the buckle with the receipts detain and separate, the second beat the mechanism and be bilateral symmetry structure.

4. The four-wheeled baby stroller as claimed in claim 1, wherein the upper frame comprises an upper frame tube, a mounting frame for mounting the seat and the handle, a first base, a second slider, a third slider, a cable, a second spring, a first tube plug, a second tube plug, a retracting buckle, a retracting block, a second base, a first connecting pin and a second connecting pin, the retracting block is fixedly sleeved on the mounting frame, the retracting block is provided with a second clamping groove and a third clamping groove, the upper portion of the second base is sleeved on the retracting block, the first base is rotatably mounted on the lower frame, the first base is provided with a first insertion hole with an open upper end, the lower portion of the upper frame tube is inserted into the first insertion hole, the second base is provided with a second insertion hole with an open lower end, the upper part of the upper frame pipe is inserted into the second jack, the first pipe plug and the second pipe plug are both positioned in the upper frame pipe, the second pipe plug is positioned above the first pipe plug, the second sliding block is arranged in the first pipe plug and can move up and down in the first pipe plug under the action of stress, the lower end of the second spring is fixed on the second sliding block, the upper end of the second spring is propped against the first pipe plug, the first connecting pin penetrates through the first base, the upper frame pipe, the first pipe plug and the second sliding block, the first connecting pin can synchronously move up and down along with the second sliding block, the lower frame is provided with a positioning groove, when the upper frame is in an unfolding state, the first connecting pin is clamped into the positioning groove, at the moment, the upper frame cannot rotate relative to the lower frame, the third sliding block is arranged in the second pipe plug and can move up and down in the second pipe plug under the action of stress, the second connecting pin penetrates through the second base, the second pipe plug and the third sliding block, the two ends of the second connecting pin are inserted into the car folding block, the second connecting pin can move up and down along with the third sliding block, the lower end of the steel cable is fixed on the second sliding block, the upper end of the steel cable is fixed on the third sliding block, the car folding buckle is installed on the second base in a rotatable mode and is provided with a torsion spring between the car folding buckle and the second base, the car folding buckle is provided with a clamping pin, when the upper frame is in an unfolding state, the clamping pin is clamped into the second clamping slot under the action of the torsion spring for fixing, when the vehicle folding buckle is pulled to enable the clamping pin to be separated from the second clamping groove and then clamped into the third clamping groove for fixation, the first connecting pin is separated from the positioning groove.