CN112319591A

CN112319591A - Children's barrow

Info

Publication number: CN112319591A
Application number: CN202011075877.9A
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: 2021-02-05

Abstract

The invention discloses a children's cart, which comprises a frame with an unfolding state and a folding state, wherein the frame is provided with two groups of side brackets, the frame is in the unfolding state, each side bracket at each side at least comprises a front bracket and a rear bracket, the upper part of the front bracket is relatively and rotatably connected with the upper part of the rear bracket, and when the frame is converted from the unfolding state to the folding state, the front bracket and the rear bracket relatively rotate and gradually furl; the frame further comprises a front support frame arranged between the front supports on the two sides, the front support frame comprises two front cross rods which are respectively and rotatably connected with the front supports on the two sides through a front rotating shaft, the adjacent ends of the two front cross rods are rotatably connected through a front connecting shaft, and the side support on each side further comprises a first driving mechanism which is used for driving the front cross rods to rotate in the process that the frame is converted from an unfolding state to a folding state so as to enable the two front cross rods to rotate and fold. The side support and the front cross rod can be synchronously folded only by one-time operation of the trolley, the folding operation is simple and convenient, and the folded volume is extremely small.

Description

Children's barrow

Technical Field

The invention relates to a baby stroller.

Background

In the prior art, the stroller is usually foldable for convenient carrying and storage. The existing stroller has various types, different numbers of rod pieces of a stroller frame and different connecting positions among the rod pieces, so that the folding principle and the folding mode are different, and the folding effect is different. Chinese patent publication No. CN111391908A discloses a foldable stroller, in which each group of side brackets of the stroller frame can be folded, and the two groups of side brackets can be folded in the left-right direction, so that the overall size of the foldable stroller frame is small after being folded. However, the folding of the frame in the prior art needs two-step operation, 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 has a small folded body.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a children's shallow, including the frame that has expansion state and fold condition, locate the front wheel subassembly and the rear wheel subassembly of frame bottom, and be used for with the locking mechanical system of frame locking under the expansion state, the frame has two sets of collateral branch framves of locating the left and right sides separately, the frame is under the expansion state, every side the collateral branch frame all includes fore-stock and after-poppet at least, the front wheel subassembly is located the bottom of fore-stock, the rear wheel subassembly is located the bottom of after-poppet, the upper portion of fore-stock with the upper portion of after-poppet is connected with relatively rotating, works as the frame is by the in-process of expansion state to fold condition conversion, the fore-stock with the after-poppet rotates and draws in gradually, the frame is still including setting up in both sides the front strut between the fore-stock, the front strut includes respectively through preceding pivot and both sides the two front crossbars rotate the connection, the adjacent end parts of the two front cross rods are rotatably connected through a front connecting shaft, and the side support at each side further comprises a first driving mechanism which is used for driving the front cross rods to rotate so as to enable the two front cross rods to rotate and fold in the process of converting the frame from the unfolding state to the folding state.

Preferably, the rear support of each side includes a rear upper support and a rear lower support which are telescopically connected in a sliding manner along the length direction, the rear wheel assembly is arranged at the bottom of the rear lower support, and when the frame is converted from the unfolded state to the folded state, the rear upper support and the rear lower support relatively slide to shorten the length.

Preferably, the side bracket of each side further comprises: a side bar, two of a lower portion of the side bar, an upper portion of the front bracket and an upper portion of the rear upper bracket being rotatably connected and a third one of the side bar and the upper portion being rotatably connected together, or the three being rotatably connected together around a same rotation center line; the upper part of the side rod is rotationally connected to the push rod; the supporting rod is rotatably connected with the rear upper bracket through a first shaft, and the upper part of the supporting rod is rotatably connected with the lower part of the push rod; 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 support rod; the side bracket also comprises a second driving mechanism which can drive the rear lower bracket and the rear upper bracket to relatively slide and shorten in the process of converting the frame from the unfolding state to the folding state.

Preferably, the second driving mechanism comprises a pull rod, one end of the pull rod is rotatably connected with the lower part of the support rod through a second shaft, and the other end of the pull rod is rotatably connected with the rear lower bracket.

Preferably, the first driving mechanism includes a front linkage rod and a slider capable of relatively sliding along the vertical direction and disposed on the front bracket, one end of the front linkage rod is rotatably connected to the slider through a third shaft, the other end of the front linkage rod is rotatably connected to the front cross rod through a fourth shaft, the front cross rod is located between the fourth shaft and the front connecting shaft in the length direction of the front cross rod, and the first driving mechanism further includes a driving member capable of driving the slider to slide along the front bracket when the front bracket and the rear bracket relatively approach to move.

Preferably, the driving member is a driving link, one end of the driving link is rotatably connected to the rear bracket, and the other end of the driving link is rotatably connected to the sliding member through a fifth shaft.

Preferably, the fifth shaft is located above the third shaft on the sliding part, and in the process of converting the frame from the unfolded state to the folded state, the sliding part slides downwards along the front bracket, and the front connecting shaft moves upwards to enable the two front cross rods to rotate and fold mutually.

Preferably, the frame still includes the setting in both sides back strut between the back upper bracket, back strut includes respectively through back pivot and both sides two back horizontal poles that back upper bracket rotated the connection, two adjacent tip of back horizontal pole is connected through the back connecting axle rotatoryly, every side the side support still including be used for the frame order about from the development to fold condition conversion in-process the back horizontal pole rotates and makes two the third actuating mechanism that the back horizontal pole rotated and draws in.

Preferably, the third driving mechanism comprises a rear linkage rod, one end of the rear linkage rod is rotationally connected to the stay rod through a first universal joint, the other end of the rear linkage rod is rotationally connected to the rear cross rod on the same side through a second universal joint, and the first universal joint is located below the first shaft along the length extension direction of the stay rod; and in the length direction of the rear transverse rod, the second universal joint is positioned between the rear connecting shaft and the rear rotating shaft.

Preferably, the main body pole that the vaulting pole has and extends along upper and lower direction, and certainly the extension rod that the main body pole extends forward, the main body pole through the primary shaft with back upper bracket rotationally connects, the extension rod is located the length direction of main body pole is in the below of primary shaft, the anterior of extension rod with the rear portion of connecting rod rotationally connects.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the child stroller is simple in structure, small in size after being folded, simple and convenient to operate, and convenient to use, and the side support and the front support can be synchronously folded only through one-time operation due to the arrangement of the first driving mechanism.

Drawings

FIG. 1 is a schematic perspective view of a stroller frame in an expanded state according to an embodiment of the stroller of the present invention;

FIG. 2 is a perspective view of the frame of this embodiment at another angle when the frame is in the extended position;

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

FIG. 4 is a schematic perspective view of the frame of this embodiment at another angle when the frame is in the extended position;

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

FIG. 6 is a side view of the present embodiment with the frame in an expanded position;

FIG. 7 is a sectional view of the frame in the expanded state in this embodiment;

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

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

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

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

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

FIG. 13 is a perspective view of the frame of this embodiment in a folded position;

FIG. 14 is a side view of the frame of this embodiment in a folded condition;

wherein: 11. a side bracket; 111. a front bracket; 112. a rear bracket; 1121. a rear upper bracket; 1122. a rear lower bracket; 113. a side lever; 114. a push rod; 115. a stay bar; 1151. a main body lever; 1152. an extension rod; 116. a connecting rod; 117. a seat post; 12. a cross brace assembly; 121. a front cross bar; 122. a rear cross bar; 123. an upper stay bar; 124. a handle bar is pushed; 131. a pull rod; 132. a front linkage rod; 133. a slider; 134. a drive link; 135. a rear linkage rod; 136. a first universal joint; 137. a second universal joint; 2. a front wheel assembly; 3. a rear wheel assembly.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

The following descriptions of the up-down, front-back, left-right, etc. orientations are defined with reference to the orientation of a child as viewed while seated in the stroller.

As shown in fig. 1 to 14, the stroller includes 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 has two sets of side brackets 11 respectively provided at left and right sides, and a cross brace assembly 12 provided between the side brackets in a left and right direction to be unfolded or folded.

As shown in fig. 1, 6 and 7, each side bracket 11 includes:

the front bracket 111, the front wheel assembly 2 locates the bottom of the front bracket 111;

a rear bracket 112 including a rear upper bracket 1121 and a rear lower bracket 1122 telescopically connected to each other in a sliding manner in a longitudinal direction, wherein the rear wheel assembly 3 is provided at the bottom of the rear lower bracket 1122;

a side rod 113, the lower part of the side rod 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 piece which can stretch along the length direction of the push rod 114, 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 having a main body rod 1151 extending in the up-down direction and an extension rod 1152 extending forward from the main body rod 1151, wherein an upper portion of the main body rod 1151 is rotatably connected to a lower portion of the push rod 114 via a rotation shaft s, a middle portion of the main body rod 1151 is rotatably connected to the rear upper bracket 1121 via a first axis a, and the extension rod 1152 is located below the first axis a in the longitudinal direction of the main body rod 1151;

a link 116, a front portion of the link 116 being rotatably connected to the front bracket 111 via a rotation shaft q, and a rear portion of the link 116 being rotatably connected to a front portion of the extension bar 1152 via a rotation shaft r;

a seat bar 117, the rear part of the seat bar 117 is rotatably connected to the stay 115 through a rotating shaft u, the seat bar 117 is also rotatably connected to the side bar 113 through a rotating shaft v, and the rotating shaft v is positioned in front of the rotating shaft u in the length direction of the seat bar 117.

The side bracket 11 further includes a second driving mechanism capable of driving the relative sliding and shortening between the rear lower bracket 1122 and the rear upper bracket 1121 during the conversion of the frame from the unfolded state to the folded 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 pivotally connected to a lower end portion of the main body rod 1151 via a second axis b, which is located below the first axis a in the longitudinal direction of the main body rod 1151, and a rear end portion of the pull rod 131 is pivotally connected to the rear lower bracket 1122 via a rotation axis w. When the side bracket 11 is folded, when the supporting rod 115 rotates around the first axis a relative to the rear upper bracket 1121, the lower portion of the main rod 1151 moves forward, so as to pull the pulling rod 131 to move forward, so that the rear lower bracket 1122 slides and shortens relative to the rear upper bracket 1121, and the rear bracket 112 is folded in a linkage manner.

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

As shown in fig. 1 and 2, the front support frame includes two front cross bars 121 rotatably connected to the front brackets 111 on both sides through front rotating shafts f, respectively, and adjacent ends of the two front cross bars 121 are rotatably connected through a front connecting shaft g. The side brackets 11 on each side further include a first driving mechanism for driving the front cross bars 121 to rotate during the transition of the frame from the unfolded state to the folded state, so that the two front cross bars 121 are relatively rotated and folded.

As shown in fig. 2 and 3, the first driving mechanism includes a front linkage rod 132 and a sliding member 133 disposed on the front bracket 111 and capable of relatively sliding in the vertical direction, an upper end of the front linkage rod 132 is rotatably connected to the sliding member 133 through a third shaft c, and a lower end of the front linkage rod 132 is rotatably connected to the front cross bar 121 through a fourth shaft d. As shown in fig. 2 and 3, in the longitudinal direction of the front cross bar 121, the front rotating shaft f is located between the fourth shaft d and the front connecting shaft g, and the axial lines of the front connecting shaft g, the front rotating shaft f, the third shaft c and the fourth shaft d are parallel to each other.

As shown in fig. 2, 3, 6 and 7, the first driving mechanism further includes a driving element capable of driving the sliding element 133 to slide along the front bracket 111 when the front bracket 111 and the rear bracket 112 move relatively toward each other, in this embodiment, the driving element is specifically a driving link 134, an upper end of the driving link 134 is rotatably connected to the rear upper bracket 1121 through a rotating shaft t, a lower end of the driving link 134 is rotatably connected to the sliding element 133 through a fifth shaft e, and the fifth shaft e is located above the third shaft c on the sliding element 133. During the frame conversion from the unfolded state to the folded state, the sliding member 133 slides downward along the front bracket 111, and the front connecting shaft g moves upward to enable the two front cross bars 121 to rotate and fold each other.

As shown in fig. 4 and 5, the back bracket includes two back cross rods 122 rotatably connected to the back upper brackets 1121 at both sides through back rotation shafts h, respectively, and adjacent ends of the two back cross rods 122 are rotatably connected through a back connection shaft i. The side brackets 11 on each side further include a third driving mechanism for driving the rear cross bar 122 to rotate so as to fold the two rear cross bars 122 in the process of converting the frame from the unfolded state to the folded state.

As shown in fig. 4 and 5, the third driving mechanism includes a rear linkage rod 135, one end of the rear linkage rod 135 is rotatably connected to the main rod 1151 through a first universal joint 136, and the other end of the rear linkage rod 135 is rotatably connected to the rear cross bar 122 on the same side through a second universal joint 137. Along the length extension of the main body rod 1151, the first gimbal 136 is located below the first axis a; along the length direction of the rear cross bar 122, the second universal joint 137 is located between the rear connecting shaft i and the rear rotating shaft h.

As shown in fig. 5, the first universal joint 136 includes a first connecting piece of a U-shaped structure, which is rotatably connected to the main rod 1151 of the stay 115 through a rotating shaft x1, and one end of the rear linkage rod 135 is rotatably connected to the first connecting piece through a rotating shaft x3, and the axis of the rotating shaft x1 and the axis of the rotating shaft x3 are perpendicular to each other. Similarly, the second universal joint 137 includes a second connecting piece of U-shaped structure, the second connecting piece is rotatably connected to the rear cross bar 122 through a rotating shaft x2, the other end of the rear linkage rod 135 is rotatably connected to the second connecting piece through a rotating shaft x4, and the axis of the rotating shaft x2 and the axis of the rotating shaft x4 are perpendicular to each other. Thereby, the rear cross bar 122 and the main body bar 1151 can rotate in a universal direction.

As shown in fig. 1, the upper supporting frame includes an upper supporting rod 123, the upper supporting rod 123 is specifically a double cross-shaped rod member foldable in the left and right directions, and when the upper supporting rod 123 is unfolded, it can support the child sitting on the stroller; as shown in fig. 10, when the two sets of side brackets 11 are drawn close to each other, the upper stay 123 can be folded in the left-right direction.

As shown in fig. 1, the push bar cross frame includes two push bar cross bars 124 rotatably connected to the push bars 114 at both sides through a rotating shaft j, respectively, and adjacent ends of the two push bar cross bars 124 are rotatably connected through a rotating shaft k. As shown in fig. 10, when the frame is converted from the unfolded state to the folded state, the two push bar cross bars 124 are respectively rotated downward around the rotating shaft j, and the rotating shaft k moves downward, so that the push bar cross bars are folded between the push bars 114 at both sides in the left and right directions.

In this embodiment, the locking mechanism may be disposed between the rod members of the side bracket 11 that are connected to each other in any rotation or sliding manner, and the rotating shaft k of the handle bar 124.

As shown in fig. 8 to 12, when the stroller needs to be folded, the locking mechanism is first unlocked, the push bar cross bar 124 and the push rod 114 are pressed downward, so that the push bar cross bars 124 on both sides rotate downward around the rotating shaft j, and the side bars 113 and the main bar 1151 rotate backward and downward to fold, thereby linking the rear frame 112 and the front frame 111 to close to each other; in this process, the side brackets 11 drive the rear lower brackets 1122 and the rear upper brackets 1121 to relatively slide and shorten through the second driving mechanism, drive the front cross bars 121 to rotate through the first driving mechanism so as to enable the two front cross bars 121 to rotate and fold, and drive the rear cross bars 122 to rotate through the third driving mechanism so as to enable the two rear cross bars 122 to rotate and fold; therefore, when the side brackets 11 on the two sides are respectively folded, the linkage cross brace component 12 is folded along the left-right direction to mutually fold the side brackets 11 on the two sides, and the push handle cross brace is also folded along the left-right direction.

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

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a children's shallow, includes the frame that has expansion state and fold condition, locates the front wheel subassembly and the rear wheel subassembly of frame bottom, and be used for with the locking mechanical system of frame locking under the expansion state, the frame has two sets of collateral branch framves of locating the left and right sides, its characterized in that: the frame is in an unfolding state, the side brackets on each side at least comprise a front bracket and a rear bracket, 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 bracket, the upper part of the front bracket is relatively and rotatably connected with the upper part of the rear bracket, when the frame is converted from the unfolding state to the folding state, the front bracket and the rear bracket relatively rotate and gradually furl,

the frame is still including setting up in both sides preceding strut between the fore-stock, preceding strut is including respectively through preceding pivot and both sides two preceding horizontal poles that the fore-stock rotates the connection, two the adjacent tip of preceding horizontal pole is connected with rotating through preceding connecting axle, every side the side support still including be used for the frame is by the in-process drive of expansion state to fold condition conversion preceding horizontal pole rotates and makes two the first actuating mechanism that the preceding horizontal pole rotated and draws in.

2. The stroller of claim 1, wherein: the rear support on each side comprises a rear upper support and a rear lower support which are in sliding telescopic connection along the length direction, the rear wheel assembly is arranged at the bottom of the rear lower support, and when the frame is converted from an unfolded state to a folded state, the rear upper support and the rear lower support slide relatively to shorten the length.

3. The stroller of claim 2, wherein: the side bracket of each side further comprises:

a side bar, two of a lower portion of the side bar, an upper portion of the front bracket and an upper portion of the rear upper bracket being rotatably connected and a third one of the side bar and the upper portion being rotatably connected together, or the three being rotatably connected together around a same rotation center line;

the upper part of the side rod is rotationally connected to the push rod;

the supporting rod is rotatably connected with the rear upper bracket through a first shaft, and the upper part of the supporting rod is rotatably connected with the lower part of the push rod;

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 support rod;

the side bracket also comprises a second driving mechanism which can drive the rear lower bracket and the rear upper bracket to relatively slide and shorten in the process of converting the frame from the unfolding state to the folding state.

4. The stroller of claim 3, wherein: the second driving mechanism comprises a pull rod, one end of the pull rod is rotatably connected with the lower part of the support rod through a second shaft, and the other end of the pull rod is rotatably connected with the rear lower bracket.

5. Child stroller according to any of claims 1 to 4, characterized in that: the first driving mechanism comprises a front linkage rod and a sliding piece, wherein the sliding piece can be arranged on the front support in a vertically relative sliding mode, one end portion of the front linkage rod is connected to the sliding piece in a rotating mode through a third shaft, the other end portion of the front linkage rod is connected with the front cross rod in a rotating mode through a fourth shaft, the front cross rod is arranged in the length direction of the front cross rod, the front cross rod is located between the fourth shaft and the front connecting shaft, and the first driving mechanism further comprises a driving piece capable of driving the sliding piece to follow the front support when the front support and the rear support move relatively close to each other.

6. The stroller of claim 5, wherein: the driving piece is a driving connecting rod, one end of the driving connecting rod is rotationally connected to the rear support, and the other end of the driving connecting rod is rotationally connected to the sliding piece through a fifth shaft.

7. The stroller of claim 6, wherein: the fifth shaft is arranged above the third shaft on the sliding piece, the sliding piece slides downwards along the front support in the process of converting the frame from the unfolded state to the folded state, and the front connecting shaft moves upwards to enable the two front cross rods to rotate mutually and be folded.

8. The stroller of claim 3, wherein: the frame is still including setting up in both sides back strut between the back upper bracket, back strut is including respectively through back pivot and both sides two back horizontal poles that back upper bracket rotated the connection, two adjacent tip of back horizontal pole is connected with rotating through the back connecting axle, every side the collateral branch frame is still including being used for the frame is ordered about to fold condition conversion in-process by the expansion state back horizontal pole rotates and makes two the third actuating mechanism that the back horizontal pole rotated and draws in.

9. The stroller of claim 8, wherein: the third driving mechanism comprises a rear linkage rod, one end part of the rear linkage rod is rotationally connected to the stay rod through a first universal joint, the other end part of the rear linkage rod is rotationally connected to the rear cross rod on the same side through a second universal joint, the first universal joint is positioned below the first shaft in the extension direction of the stay rod; and in the length direction of the rear transverse rod, the second universal joint is positioned between the rear connecting shaft and the rear rotating shaft.

10. The stroller of claim 3, wherein: the vaulting pole has the main part pole that extends along upper and lower direction, and certainly the extension rod that the main part pole extends forward, the main part pole pass through the primary shaft with back upper bracket rotationally connects, the extension rod is in the length direction of main part pole is located the below of primary shaft, the anterior of extension rod with the rear portion of connecting rod rotationally connects.