CN119370172A

CN119370172A - Strollers

Info

Publication number: CN119370172A
Application number: CN202411563062.3A
Authority: CN
Inventors: 马福生; 石平中
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2025-01-28
Also published as: CN112319591B; CN112319591A

Abstract

The invention discloses a child stroller, which comprises two groups of side brackets, wherein each side bracket comprises a front bracket, a rear bracket, a supporting rod and a pull rod, each rear bracket on each side comprises a rear upper bracket and a rear lower bracket which are connected in a sliding and telescopic manner along the length direction, the front wheel assembly is arranged at the bottom of the front bracket, the rear wheel assembly is arranged at the bottom of the rear lower bracket, the upper part of the front bracket is connected with the upper part of the rear upper bracket in a relatively rotating manner, the supporting rod is connected with the rear upper bracket in a rotationally manner, the pull rod is connected between the supporting rod and the rear lower bracket in a rotationally manner, and in the process of converting the frame from an unfolded state to a folded state, the supporting rod is folded towards the rear bracket and drives the rear upper bracket and the rear lower bracket to slide relatively through the pull rod so as to shorten the length of the rear bracket.

Description

Child cart

The application relates to a divisional application of an application application with the application number 202011075877.9 of ' child cart ' and the application name of ' 10 months and 10 days in 2020.

Technical Field

The invention relates to a child stroller.

Background

In the prior art, the stroller is often foldable for convenience in carrying and storing. The existing children's carts are various, the number of cart frame members is different, the connection positions among the members are different, so that the folding principle and the folding mode are different, and the folding effect is different. The chinese patent with publication number CN111391908a discloses a foldable stroller, wherein each group of side brackets of the stroller frame can be folded by itself, and the two groups of side brackets can be folded together in the left-right direction, so that the overall volume of the stroller frame after folding is smaller. However, in the prior art, the folding operation of the frame needs to be carried out in two steps, and the folding operation is complicated.

Disclosure of Invention

The invention aims to provide a child stroller which is simple and convenient to fold and operate and has a very small folding volume.

In order to achieve the aim, the technical scheme is that the children cart comprises a cart frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly, wherein the front wheel assembly and the rear wheel assembly are arranged at the bottom of the cart frame, the cart frame is provided with two groups of side supports which are respectively arranged at the left side and the right side, the side supports at each side comprise a front support, a rear support, a brace rod and a pull rod, the rear support at each side comprises a rear upper support and a rear lower support which are in sliding telescopic connection along the length direction, the front wheel assembly is arranged at the bottom of the front support, the rear wheel assembly is arranged at the bottom of the rear lower support, the upper part of the front support is connected with the upper part of the rear upper support in a relative rotation mode, the brace rod is connected with the rear upper support in a rotary mode, the pull rod is connected between the brace rod and the rear lower support in a rotary mode, and the cart frame is folded towards the rear upper support and the lower support in a sliding mode relative to the length direction between the rear support and the rear support through the drive of the rear support.

In some embodiments, the side brackets of each side further comprise:

A side lever, wherein two of the lower part of the side lever, the upper part of the front bracket and the upper part of the rear upper bracket are rotationally connected and a third is rotationally connected to one of the two, or the three are rotationally connected together around the same rotation center line;

The upper part of the side rod is rotationally connected to the push rod, and the upper part of the supporting rod is rotationally connected with the lower part of the push rod;

In the process of converting the frame from the unfolding state to the folding state, the push rod rotates towards the direction of approaching the side rods and drives the side rods to approach the rear support, and the support rod rotates along with the push rod to be folded with the rear support.

In some embodiments, the side brackets on each side further comprise:

A connecting rod, the front part of the connecting rod is rotationally connected with the front bracket, the rear part of the connecting rod is rotationally connected with the stay bar,

The support rod is rotatably connected with the rear upper bracket through a first shaft, one end part of the pull rod is rotatably connected with the lower part of the support rod through a second shaft, and the other end part of the pull rod is rotatably connected with the rear lower bracket.

In some embodiments, the stay has a body bar extending in an up-down direction, and an extension bar extending forward from the body bar, the body bar being rotatably connected with the rear upper bracket through the first shaft, the extension bar being located below the first shaft in a length direction of the body bar, a front portion of the extension bar being rotatably connected with a rear portion of the link.

In some embodiments, the frame further comprises a rear support frame arranged between the rear upper brackets at two sides, the rear support frame comprises two rear cross bars which are respectively connected with the rear upper brackets at two sides in a rotating way through rear rotating shafts, adjacent ends of the two rear cross bars are connected in a rotating way through rear connecting shafts,

The side brackets at each side further comprise a rear linkage rod, and the rear linkage rod is rotationally connected with the supporting rods and the rear cross rods at the same side, so that the two rear cross rods are driven to relatively rotate and fold when the supporting rods are rotated and folded relative to the rear brackets.

In some embodiments, one end of the rear linkage rod is rotatably connected to the stay rod through a first universal joint, the other end of the rear linkage rod is rotatably connected to the rear cross rod on the same side through a second universal joint, the first universal joint is located below the first shaft along the length extension direction of the stay rod, and the second universal joint is located between the rear connecting shaft and the rear rotating shaft along the length direction of the rear cross rod.

In some embodiments, the frame further comprises a front support frame arranged between the front brackets at two sides, the front support frame comprises two front cross bars rotationally connected with the front brackets at two sides through front rotating shafts, adjacent ends of the two front cross bars are rotationally connected through front connecting shafts, a first driving mechanism is further arranged on each side of the side brackets, and the first driving mechanism is configured to drive the two front cross bars to rotate and fold relatively in the process of rotating and folding the front brackets and the rear brackets relatively.

In some embodiments, the first driving mechanism includes a front linkage rod and a sliding member that is relatively slidably disposed on the front bracket in an up-down direction, one end of the front linkage rod is rotatably connected to the sliding member, the other end of the front linkage rod is rotatably connected to the front cross bar, and the first driving mechanism further includes a driving member configured to drive the sliding member to slide along the front bracket when the front bracket and the rear bracket relatively approach to each other.

In some embodiments, one end of the front link lever is rotatably connected to the slider through a third shaft, the other end of the front link lever is rotatably connected to the front cross bar through a fourth shaft, and the front rotation shaft is located between the fourth shaft and the front connection shaft in a length direction of the front cross bar.

In some embodiments, the driving member is a driving link, one end of which is rotatably connected to the rear bracket, and the other end of which is rotatably connected to the slider.

In some embodiments, the other end of the driving link is rotatably connected to the sliding member through a fifth shaft, the fifth shaft is located above the third shaft on the sliding member, the sliding member slides down along the front bracket during the process of converting the vehicle frame from the unfolded state to the folded state, and the front connecting shaft moves upwards to enable the two front crossbars to rotate and fold.

Compared with the prior art, the child stroller has the advantages that the rear support on each side comprises the rear upper support and the rear lower support which are connected in a sliding and telescopic mode along the length direction, the rear upper support and the rear lower support slide to shorten the length when the stroller frame is folded, the structure is simple, the volume after folding is extremely small, the pull rod is arranged, when the pull rod rotates relative to the rear support in the folding process of the stroller frame, the pull rod can drive the rear upper support and the rear lower support to slide to shorten the length of the rear support, and the child stroller is simple, convenient and quick to operate and convenient to use.

Drawings

FIG. 1 is a schematic perspective view of a stroller in an embodiment of the present invention with a frame in an extended position;

FIG. 2 is a schematic perspective view of another angle of the frame in the unfolded state in the present embodiment;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic perspective view of another angle of the frame in the unfolded state in the present embodiment;

FIG. 5 is an enlarged view of FIG. 4 at B;

FIG. 6 is a side view of the frame of the present embodiment in a deployed state;

FIG. 7 is a cross-sectional view of the frame in the unfolded state of the present embodiment;

FIG. 8 is a schematic perspective view of the frame during folding in the present embodiment;

FIG. 9 is an enlarged view of FIG. 8 at C;

FIG. 10 is a schematic perspective view of the frame at another angle during folding in the present embodiment;

FIG. 11 is an enlarged view of FIG. 10 at D;

FIG. 12 is a side view of the frame during folding of the present embodiment;

FIG. 13 is a perspective view of the frame in the folded state according to the present embodiment;

FIG. 14 is a side view of the frame in a collapsed condition of the present embodiment;

Wherein 11, side brackets, 111, front bracket, 112, rear bracket, 1121, rear upper bracket, 1122, rear lower bracket, 113, side bar, 114, push rod, 115, stay, 1151, body bar, 1152, extension bar, 116, link, 117, seat bar, 12, cross bar assembly, 121, front cross bar, 122, rear cross bar, 123, upper stay, 124, push handle cross bar, 131, pull bar, 132, front linkage, 133, slider, 134, drive link, 135, rear linkage, 136, first universal joint, 137, second universal joint, 2, front wheel assembly, 3, rear wheel assembly.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.

The following description of the directions up and down, front and back, left and right, etc. are defined with reference to the directions that a child sees when seated in the stroller.

A stroller as shown in fig. 1 to 14, comprises a frame having an unfolded state and a folded state, a front wheel assembly 2 and a rear wheel assembly 3 provided at the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state, the frame having two sets of side brackets 11 provided separately on the left and right sides, and a cross brace assembly 12 provided between the side brackets so as to be unfolded or folded in the left and right direction.

As shown in fig. 1, 6 and 7, the side brackets 11 on each side each include:

A front bracket 111, the front wheel assembly 2 being provided at the bottom of the front bracket 111;

the rear bracket 112 comprises a rear upper bracket 1121 and a rear lower bracket 1122 which are connected in a sliding and telescopic manner along the length direction, and the rear wheel assembly 3 is arranged at the bottom of the rear lower bracket 1122;

The side lever 113, the lower part of the side lever 113 is rotatably connected with the upper part of the rear upper bracket 1121 through a rotating shaft n, the upper part of the front bracket 111 is rotatably connected with the upper part of the rear upper bracket 1121 through a rotating shaft p, and the rotating shaft n is positioned above the rotating shaft p;

A push rod 114, wherein the push rod 114 is a rod member which can be extended and contracted along the length direction, and the upper part of the side rod 113 is rotatably connected to the push rod 114 through a rotating shaft m;

A stay 115, the stay 115 having a main body rod 1151 extending in an up-down direction and an extension rod 1152 extending forward from the main body rod 1151, an upper portion of the main body rod 1151 being rotatably connected to a lower portion of the push rod 114 through a rotation shaft s, a middle portion of the main body rod 1151 being rotatably connected to the rear upper bracket 1121 through a first shaft a, the extension rod 1152 being located below the first shaft a in a length direction of the main body rod 1151;

A link 116, the front part of the link 116 being rotatably connected to the front bracket 111 through a rotation shaft q, the rear part of the link 116 being rotatably connected to the front part of the extension rod 1152 through a rotation shaft r;

The seat bar 117, the rear portion of the seat bar 117 is rotatably connected to the stay 115 through a rotation shaft u, the seat bar 117 is also rotatably connected to the side bar 113 through a rotation shaft v, and the rotation shaft v is located in front of the rotation shaft u in the longitudinal direction of the seat bar 117.

The side brackets 11 further include a second drive mechanism that is capable of urging the relative sliding motion between the rear lower brackets 1122 and the rear upper brackets 1121 to shorten during the transition of the frame from the extended state to the collapsed state.

As shown in fig. 1, 6 and 7, the second driving mechanism includes a pull rod 131, a front end portion of the pull rod 131 is rotatably connected to a lower end portion of the main body lever 1151 via a second shaft b, and a rear end portion of the pull rod 131 is rotatably connected to the rear lower bracket 1122 via a rotation shaft w, wherein the second shaft b is located below the first shaft a in a longitudinal direction of the main body lever 1151. When the side bracket 11 is folded, the stay 115 rotates about the first axis a relative to the rear upper bracket 1121, and the lower portion of the main body rod 1151 moves forward, so that the pull rod 131 is pulled to move forward, and the rear lower bracket 1122 and the rear upper bracket 1121 slide relatively and shorten, so that the rear bracket 112 is folded in a linkage manner.

As shown in fig. 1 and 2, the cross brace assembly 12 includes a front brace disposed between the front brackets 111 on both sides, a rear brace disposed between the rear upper brackets 1121 on both sides, an upper brace disposed between the seat bars 117 on both sides, and a push handle cross brace disposed between the push rods 114 on both sides.

As shown in fig. 1 and 2, the front bracket includes two front crossbars 121 rotatably connected to the front brackets 111 on both sides through front rotation shafts f, respectively, and adjacent ends of the two front crossbars 121 are rotatably connected through front connection shafts g. The side brackets 11 on each side further comprise a first driving mechanism for driving the front cross bars 121 to rotate during the process of converting the frame from the unfolded state to the folded state so as to enable the two front cross bars 121 to relatively rotate and fold.

As shown in fig. 2 and 3, the first driving mechanism includes a front link 132 and a slider 133 provided on the front bracket 111 so as to be relatively slidable in the up-down direction, an upper end portion of the front link 132 is rotatably connected to the slider 133 through a third shaft c, and a lower end portion of the front link 132 is rotatably connected to the front cross bar 121 through a fourth shaft d. As shown in fig. 2 and 3, in the length direction of the front cross bar 121, the front rotation axis f is located between the fourth axis d and the front connection axis g, and the axes of the front connection axis g, the front rotation axis f, the third axis c, and the fourth axis d are parallel to each other.

As shown in fig. 2,3, 6 and 7, the first driving mechanism further includes a driving member capable of driving the sliding member 133 to slide along the front bracket 111 when the front bracket 111 and the rear bracket 112 move relatively and close, in this embodiment, the driving member is specifically a driving link 134, an upper end portion of the driving link 134 is rotatably connected to the rear upper bracket 1121 through a rotation shaft t, and a lower end portion of the driving link 134 is rotatably connected to the sliding member 133 through a fifth shaft e, which is located above the third shaft c on the sliding member 133. In the process of converting the vehicle frame from the unfolded state to the folded state, the sliding piece 133 slides downwards along the front bracket 111, and the front connecting shaft g moves upwards so that the two front cross bars 121 are mutually rotated and folded.

As shown in fig. 4 and 5, the rear bracket includes two rear cross bars 122 rotatably connected to the rear upper brackets 1121 on both sides through rear rotation shafts h, respectively, and adjacent ends of the two rear cross bars 122 are rotatably connected through rear connection shafts i. The side brackets 11 on each side further include a third drive mechanism for driving the rear cross bars 122 to rotate during the transition of the frame from the unfolded state to the folded state to allow the two rear cross bars 122 to be folded in rotation.

As shown in fig. 4 and 5, the third driving mechanism includes a rear link lever 135, one end portion of the rear link lever 135 is rotatably connected to the main body lever 1151 via a first universal joint 136, and the other end portion of the rear link lever 135 is rotatably connected to the rear cross bar 122 on the same side via a second universal joint 137. The first universal joint 136 is located below the first axis a along the length extension of the main body bar 1151, and the second universal joint 137 is located between the rear connection axis i and the rear rotation axis h along the length of the rear cross bar 122.

As shown in fig. 5, specifically, the first universal joint 136 includes a first link plate of a U-shaped structure rotatably coupled to the main body lever 1151 of the stay 115 through a rotation shaft x 1, and one end of the rear link lever 135 is rotatably coupled to the first link plate through a rotation shaft x3, and an axis line of the rotation shaft x 1 and an axis line of the rotation shaft x3 are disposed perpendicular to each other. Similarly, the second universal joint 137 includes a second connection piece having a U-shaped structure, which is rotatably connected to the rear cross bar 122 through a rotation axis x2, and the other end of the rear link 135 is rotatably connected to the second connection piece through a rotation axis x4, and the axis of the rotation axis x2 and the axis of the rotation axis x4 are disposed perpendicular to each other. Thus, the rear cross bar 122 and the main body bar 1151 are capable of relative universal rotation.

The upper bracket includes an upper stay 123 as shown in fig. 1, the upper stay 123 is embodied as a double cross stay member that can be folded in the left-right direction, and when the upper stay 123 is unfolded, it can form a support for a child seated on the stroller, and when two sets of side brackets 11 are drawn together as shown in fig. 10, the upper stay 123 can be folded in the left-right direction.

As shown in fig. 1, the handle bar cross frame includes two handle bars 124 rotatably connected to push rods 114 on both sides by rotation shafts j, respectively, and adjacent ends of the two handle bars 124 are rotatably connected by rotation shafts k. As shown in fig. 10, when the frame is changed from the unfolded state to the folded state, the two handle bars 124 are respectively rotated downward about the rotation shafts j, and the rotation shafts k are moved downward, so that the handle bars are folded in the left-right direction between the side push rods 114.

In this embodiment, the locking mechanism may be disposed between the rods connected to the side bracket 11 in any rotation or sliding manner, and the rotation axis k of the handle bar 124, which is not an inventive gist of the present invention, and may be a prior art.

As shown in fig. 8 to 12, when the child stroller needs to be folded, the locking mechanism is unlocked first, the push handle cross bar 124 and the push rod 114 are pressed down, so that the push handle cross bar 124 on both sides respectively rotates downward around the rotation axis j, the side bar 113 and the main body bar 1151 are folded backward and downward, so that the rear bracket 112 and the front bracket 111 are linked to close to each other, in this process, the side brackets 11 drive the rear lower bracket 1122 and the rear upper bracket 1121 to slide relatively and shorten through the second driving mechanism, the front cross bar 121 is driven to rotate through the first driving mechanism, the two front cross bars 121 are driven to rotate and fold through the first driving mechanism, the two rear cross bars 122 are driven to rotate and fold through the third driving mechanism, and therefore, when the side brackets 11 on both sides are respectively folded, the linkage cross bar assembly 12 is folded in the left-right direction, the side brackets 11 are mutually folded, and the push handle cross bars are also folded in the left-right direction.

The final folding state of the frame is shown as 13 and fig. 14, synchronous folding of the frame in the front-back, left-right, up-down directions can be realized only by one operation, the operation is simple and convenient, each rod piece after folding is compact in structure, the folding volume is extremely small, and the carrying and the storage are convenient.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The baby stroller comprises a frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly, wherein the front wheel assembly and the rear wheel assembly are arranged at the bottom of the frame, the frame is provided with two groups of side supports which are respectively arranged at the left side and the right side, and the baby stroller is characterized in that the side supports at each side comprise a front support, a rear support, a supporting rod and a pull rod, the rear support at each side comprises a rear upper support and a rear lower support which are in sliding telescopic connection along the length direction, the front wheel assembly is arranged at the bottom of the front support, the rear wheel assembly is arranged at the bottom of the rear lower support, the upper part of the front support is connected with the upper part of the rear upper support in a relative rotation manner, the supporting rod is connected with the rear upper support in a rotation manner, the pull rod is connected between the supporting rod and the rear lower support in a rotation manner, and the frame is folded towards the rear support and driven by the pull rod to relatively slide between the rear upper support and the rear lower support in the conversion process from the unfolding state to the folding state.

2. The stroller of claim 1, wherein the side brackets on each side further comprise:

The upper part of the side rod is rotationally connected to the push rod, the upper part of the supporting rod is rotationally connected with the lower part of the push rod, and the position where the side rod is rotationally connected with the push rod is positioned at the upper side of the rotational connection position of the supporting rod and the push rod;

3. The stroller of claim 2, wherein the side brackets on each side further comprise:

The front part of the connecting rod is rotationally connected to the front bracket, and the rear part of the connecting rod is rotationally connected with the stay bar;

4. The stroller of claim 3, wherein the stay has a body bar extending in an up-down direction, and an extension bar extending forward from the body bar, the body bar being rotatably connected to the rear upper bracket by the first shaft, the extension bar being located below the first shaft in a length direction of the body bar, a front portion of the extension bar being rotatably connected to a rear portion of the link.

5. The stroller of claim 2, wherein the frame further comprises a rear bracket disposed between the rear upper brackets at both sides, the rear bracket comprises two rear cross bars rotatably connected to the rear upper brackets at both sides through rear rotation shafts, respectively, adjacent ends of the two rear cross bars are rotatably connected through rear connection shafts,

6. The stroller of claim 5, wherein one end of the rear link is rotatably coupled to the stay via a first universal joint, the other end of the rear link is rotatably coupled to the rear cross bar on the same side via a second universal joint, the first universal joint is located below the first shaft in a length extending direction of the stay, and the second universal joint is located between the rear connecting shaft and the rear rotating shaft in a length direction of the rear cross bar.

7. The stroller of claim 1, wherein the frame further comprises a front support frame arranged between the front brackets at two sides, the front support frame comprises two front cross bars which are respectively connected with the front brackets at two sides in a rotating way through a front rotating shaft, adjacent ends of the two front cross bars are rotationally connected through a front connecting shaft, a first driving mechanism is further arranged on each side bracket, and the first driving mechanism is configured to drive the two front cross bars to rotate and fold relatively in the process of rotating and folding the front brackets and the rear brackets relatively.

8. The stroller of claim 7, wherein the first driving mechanism comprises a front linkage rod and a sliding piece which is arranged on the front bracket in a relatively sliding manner along the up-down direction, one end part of the front linkage rod is rotationally connected to the sliding piece, the other end part of the front linkage rod is rotationally connected with the front cross rod, and the first driving mechanism further comprises a driving piece which is configured to drive the sliding piece to slide along the front bracket when the front bracket and the rear bracket relatively approach to each other.

9. The stroller of claim 8, wherein one end of the front link is rotatably coupled to the slider via a third shaft, and the other end of the front link is rotatably coupled to the front cross bar via a fourth shaft, and the front rotation shaft is located between the fourth shaft and the front coupling shaft in a length direction of the front cross bar.

10. The stroller of claim 9, wherein the drive member is a drive link, one end of the drive link is rotatably connected to the rear bracket, the other end of the drive link is rotatably connected to the slider, and wherein the other end of the drive link is rotatably connected to the slider via a fifth shaft, the fifth shaft being positioned above the third shaft on the slider, and wherein the slider slides downward along the front bracket during the transition of the frame from the unfolded state to the folded state, and wherein the front connecting shaft moves upward such that the two front rails are rotatably retracted relative to each other.