CN109849997B

CN109849997B - Child cart

Info

Publication number: CN109849997B
Application number: CN201910148606.2A
Authority: CN
Inventors: 高翔; 张孟
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2024-05-10
Anticipated expiration: 2039-02-28
Also published as: CN109849997A

Abstract

The invention discloses a baby stroller, which comprises a stroller frame, a front bracket, a rear bracket, a backrest frame, a stay bar frame, a seat frame and a handle pushing frame, wherein the upper part of the front bracket, the upper part of the rear bracket and the lower part of the backrest frame are connected in a relatively rotating manner; the rear bracket comprises an upper bracket and a lower bracket which relatively slide and stretch along the length direction, the upper part of the upper bracket is rotationally connected with the front bracket or the backrest rod, the seat frame is rotationally connected between the front bracket and the lower bracket, and the support rod frame is rotationally connected between the backrest frame and the lower bracket; the lower part of the push handle frame is rotatably connected to the upper part of the front bracket or the upper part of the rear bracket or the lower part of the backrest frame, and the push handle frame can be switched between a forward working position and a reverse working position in the unfolded state of the cart frame. The trolley frame has the advantages of small number of rod pieces, simple structure, convenient unfolding and folding operation of the trolley frame and convenient reversing operation of the push handle, and brings convenience for daily use of users.

Description

Child cart

Technical Field

The invention relates to a child stroller.

Background

In the prior art, strollers are of various structures, which generally include a stroller frame having an unfolded state and a folded state, a wheel assembly disposed at a bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state. At present, the frame of a baby carrier is various in variety, the number of the rods of the frame is different, and the connection relation and the connection position between the rods are different, so that the folding principle and the folding mode are also different.

Disclosure of Invention

The invention aims to provide a child cart with a novel structure and a reversible push handle.

In order to achieve the above purpose, the invention adopts the following technical scheme: a child stroller comprising a stroller frame having an expanded state and a collapsed state, a front wheel assembly disposed at a front portion of the stroller frame bottom, a rear wheel assembly disposed at a rear portion of the stroller frame bottom, and a locking mechanism for locking the stroller frame in the expanded state, the stroller frame comprising: the bottom is provided with a front bracket of the front wheel assembly, a rear bracket of the rear wheel assembly, a backrest frame, a stay bar frame, a seat frame and a handle pushing frame, wherein two parts of the upper part of the front bracket, the upper part of the rear bracket and the lower part of the backrest frame are rotationally connected, and a third part is rotationally connected with one part of the two parts, or the three parts are mutually rotationally connected together; the rear bracket comprises an upper bracket and a lower bracket which relatively slide and stretch along the length direction, the upper part of the upper bracket is rotationally connected with the front bracket or the backrest frame, the seat frame is rotationally connected between the front bracket and the lower bracket, the supporting rod frame is rotationally connected between the backrest frame and the lower bracket,

The lower part of the push handle frame is rotatably connected to the upper part of the front bracket, the upper part of the rear bracket or the lower part of the backrest frame, the push handle frame is provided with a forward working position and a reverse working position, and when the push handle frame is in the forward working position, the push handle frame gradually and upwards inclines and extends from front to back; when the push handle frame is in a reverse working position, the push handle frame gradually extends upwards from back to front, when the cart frame is in a folded state, the upper bracket and the lower bracket relatively slide to enable the rear bracket to extend, and the push handle frame and the backrest frame are folded together at the rear side of the rear bracket.

Preferably, the upper bracket comprises a sliding sleeve rod, the lower bracket comprises a bracket rod body, and the sliding sleeve rod can be arranged on the upper part of the bracket rod body in a relatively sliding manner.

Further, a limiting sleeve is fixedly arranged on the support rod body, and when the trolley frame is in a unfolding state, the limiting sleeve abuts against the bottom end part of the sliding sleeve rod.

Further, the seat frame and/or the stay bar frame are/is rotatably connected to the limit sleeve to realize the rotary connection with the lower bracket.

Further, the rear support comprises two rear support rods which are respectively arranged at the left side and the right side, each rear support rod comprises a sliding sleeve rod and a support rod body, and the lower part of each support rod body at each side is provided with a rear wheel assembly.

Preferably, the strut frame extends in an up-down direction, the seat frame extends in a front-rear direction, and the lower part of the strut frame and the rear part of the seat frame are respectively connected with the lower bracket in a rotating manner; or the lower part of the stay bar frame and the rear part of the seat frame are rotationally connected to the lower bracket around the same rotation center line; or the lower part of the support rod frame is rotatably connected with the rear part of the seat frame, and one of the lower part of the support rod frame and the rear part of the seat frame is rotatably connected with the lower bracket.

Preferably, the cart frame further comprises a handrail frame which is arranged at the upper part of the front bracket and extends forwards, and a reversing locking piece which is used for locking the pushing handle frame in the forward working position and the reverse working position is further arranged on the cart frame, and when the pushing handle frame is in the forward working position, the reversing locking piece locks the pushing handle frame and the backrest frame with each other; when the handle pushing frame is in the reverse working position, the reversing locking piece locks the handle pushing frame and the handrail frame with each other.

Preferably, the front bracket comprises two front supporting rods which are respectively arranged at the left side and the right side, and the bottom of each front supporting rod is provided with the front wheel assembly; the rear support comprises two rear supporting rods which are respectively arranged at the left side and the right side, the bottom of each rear supporting rod is provided with a rear wheel assembly, when the trolley frame is in a folded state, the two rear wheel assemblies are positioned between the two front wheel assemblies along the left-right direction, and the front wheel assemblies and the rear wheel assemblies are jointly supported on the ground.

Further, the upper part of the front bracket, the upper part of the rear bracket, the lower part of the handle pushing frame and the lower part of the backrest frame are rotatably connected with each other, and the locking mechanism comprises a main locking joint arranged among the upper part of the front bracket, the upper part of the rear bracket and the lower part of the backrest frame.

Still further, the front bracket includes two front struts that locate left and right sides respectively, the shallow frame still includes locates both sides between the front strut upper portion handrail frame, handrail frame include with front strut fixed connection and the base pole that extends forward, and rotationally connect in both sides between the base pole handrail pole, when the shallow frame is in the folded condition, handrail pole relative the base pole upset is drawn in the front side of front bracket.

Still further, the handrail frame still includes locating the base pole with handrail locking joint between the handrail pole, handrail locking joint with the main locking joint is equipped with the linkage structure, when fore-stock, after-stock and the back frame are drawn in mutually, the handrail pole is relative the base pole rotates, the linkage structure drives the main locking joint changes to the locking state from the unblock state.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the stroller frame only comprises the front bracket, the rear bracket, the seat frame, the backrest frame, the stay bar frame and the pushing handle frame, so that the stroller frame can be unfolded and folded, and the working position of the pushing handle frame can be switched according to the needs when the stroller frame is unfolded, thereby meeting the needs of forward pushing or reverse pushing in daily use. The trolley frame has the advantages of small number of rod pieces, simple structure, convenient unfolding and folding operation of the trolley frame and convenient reversing operation of the push handle, and brings convenience for daily use of users.

Drawings

FIG. 1 is a perspective view of the stroller of the present invention in an expanded condition with the handle bars in a forward operating position;

FIG. 2 is a perspective view of the child stroller of the present invention in an expanded configuration with the stroller frame in a reverse operating position;

Fig. 3 to 5 are schematic views of the folding principle of the stroller of the present invention;

Wherein: 1. a front bracket; 11. a front strut; 12. a foot pedal; 2. a rear bracket; 21. a slip-on rod; 22. a bracket rod body; 23. a limit sleeve; 24. a rear cross bar; 3. a backrest frame; 31. a backrest rod; 32. the push handle is positively locked to the seat; 4. a seat frame; 41. a seat rod; 5. a brace bar frame; 51. a brace rod; 6. a handrail frame; 61. a base rod; 62. a grab rail; 63. a handrail locking joint; 64. a push handle reverse locking seat; 7. a handle pushing frame; 71. pushing down the handle; 72. a push-up handle; 73. pushing the handle to lock the joint; 74. a reversing locking member; 8. a primary locking joint; 9. unlocking the handle; 10. a front wheel assembly; 20. and a rear wheel assembly.

Detailed Description

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

Referring to the stroller shown in fig. 1-5, the stroller includes a stroller frame having an expanded state and a collapsed state, a front wheel assembly 10 disposed at a front portion of the stroller frame bottom, a rear wheel assembly 20 disposed at a rear portion of the stroller frame bottom, and a locking mechanism for locking the stroller frame in the expanded state.

The cart frame comprises: the front support 1 with the front wheel assembly 10 at the bottom, the rear support 2 with the rear wheel assembly 20 at the bottom, the backrest frame 3, the seat frame 4 and the brace frame 5, wherein the front support 1, the rear support 2 and the backrest frame 3 respectively extend along the up-down direction in the unfolded state of the trolley frame, two parts of the upper part of the front support 1, the upper part of the rear support 2 and the lower part of the backrest frame 3 are rotatably connected, and the third part is rotatably connected with one part of the two parts, or the three parts are rotatably connected with each other.

The rear bracket 2 comprises an upper bracket and a lower bracket which relatively slide and stretch along the length direction, wherein the upper part of the upper bracket is rotationally connected with the upper part of the front bracket 1 or the lower part of the backrest frame 3, the seat frame 4 is rotationally connected between the front bracket 1 and the lower bracket, and the supporting rod frame 5 is rotationally connected between the backrest frame 3 and the lower bracket. In the present embodiment, the upper part of the front bracket 1, the upper part of the rear bracket 2 and the lower part of the back frame 3 are rotatably connected to each other, that is, the upper part of the front bracket 1, the upper part of the upper bracket and the lower part of the back frame 3 are rotatably connected to each other.

Referring to the drawings, the seat frame 4 extends in the front-rear direction, the strut frame 5 extends in the up-down direction, and the lower part of the strut frame 5 and the rear part of the seat frame 4 are respectively rotatably connected with the lower bracket; or the lower part of the brace bracket 5 and the rear part of the seat bracket 4 are rotatably connected on the lower bracket around the same rotation center line; it is also possible to provide that the lower part of the strut frame 5 is rotatably connected with the rear part of the seat frame 4 and then one of the lower part of the strut frame 5 and the rear part of the seat frame 4 is rotatably connected with the lower bracket.

Referring to the drawings, in this embodiment, a front bracket 1 includes two front struts 11 disposed on left and right sides, a foot pedal 12 is disposed between lower portions of the front struts 11 on both sides, and front wheel assemblies 10 are mounted on lower portions of the front struts 11 on both sides; in the rear bracket 2, the upper bracket comprises two sliding sleeve rods 21 which are respectively arranged at the left side and the right side, the lower bracket comprises two bracket rod bodies 22 which are respectively arranged at the left side and the right side, the sliding sleeve rods 21 can be relatively slidably arranged at the upper parts of the corresponding side bracket rod bodies 22, and the sliding sleeve rods 21 are sleeved on the bracket rod bodies 22. On each side of the cart frame, a sliding sleeve rod 21 and a bracket rod body 22 form a rear supporting rod of the rear bracket 2, the lower part of each bracket rod body 22 is provided with a rear wheel assembly 20, and a rear cross rod 24 is fixedly arranged between the bracket rod bodies 22 on two sides. On each of the left and right sides of the rear bracket 2, a stop collar 23 is fixedly provided on the bracket rod body 22, and when the cart frame is in a unfolded state, the stop collar 23 abuts against the bottom end portion of the slide collar rod 21.

The backrest frame 3 also comprises two backrest rods 31 which are respectively arranged at the left side and the right side and extend along the up-down direction, wherein the upper parts of the backrest rods 31 at the two sides are connected so that the backrest frame 3 forms a U shape with a downward opening; the seat frame 4 includes two seat bars 41 which are provided on both left and right sides and extend in the front-rear direction, and the stay bar frame 5 includes two stay bars 51 which are provided on both left and right sides and extend in the up-down direction.

The upper part of the front strut 1, the upper part of the slide bush rod 21 and the lower part of the backrest rod 31 are rotatably connected together around the same rotation center line through the main locking joint 8 on the left and right sides of the trolley frame, the front part of the seat rod 41 is rotatably connected to the front strut 1, the upper part of the stay rod 51 is rotatably connected to the backrest rod 31, and the rear part of the seat rod 41 and the lower part of the stay rod 51 are rotatably connected to the limit sleeve 23 through the same rotation shaft and are respectively rotatably connected with the rear strut. When the main locking joint 8 is locked, the front bracket 1, the rear bracket 2, the backrest frame 3, the seat frame 4 and the stay bar frame 5 are kept relatively locked.

Referring to the drawings, the stroller frame further includes a handle frame 6 provided between the front struts 1 on both sides, the handle frame 6 including two base bars 61 provided on both left and right sides and fixedly connected to the front struts 11 on the corresponding sides, and a handle bar 62 rotatably connected between the base bars 61 on both sides, specifically, the base bars 61 extend forward from the front struts 11, the handle bar 62 has a U-shape with an opening facing rearward, and rear ends thereof are rotatably connected to front portions of the base bars 61 on the corresponding sides through handle locking joints 63, respectively. In this way, the grab rail 62 can be folded down to be folded at the front side of the front bracket 1 in the folded state of the cart frame, thereby reducing the occupied space.

Referring to the drawings, the stroller frame further includes a handle frame 7, and a lower portion of the handle frame 7 is rotatably coupled to an upper portion of the front bracket 1 or an upper portion of the rear bracket 2 or a lower portion of the back frame 3. In this embodiment, the handle frame 7 has handle bars provided separately on the left and right sides, each of the handle bars includes a lower handle 71, an upper handle 72 having a lower portion rotatably connected to an upper portion of the lower handle 71 via a handle lock joint 73, and a lower portion of the lower handle 71 rotatably connected to an upper portion of the front strut 1, an upper portion of the slide bush 21, and a lower portion of the backrest 31 on the same side about the same rotation center line. The top of the push-up handle 72 is also provided with an unlocking handle 9, which unlocking handle 9 is used for unlocking the handle locking joint 73. In the setting, the push handle locking joint 73 and the main locking joint 8 can be arranged in a linkage unlocking manner, so that the main locking joint 8 is in linkage unlocking when the push handle 72 is turned over and folded relative to the push handle 71.

The push handle frame 7 has a forward working position and a reverse working position, when the push handle frame 7 is in the forward working position, the push handle frame 7 gradually extends upwards from front to back in an inclined manner, and a person can stand behind the rear wheel assembly 20 to push the cart; when the handle bar 7 is in the reverse operating position, the handle bar 7 extends gradually upwards from the rear to the front, and a person can stand in front of the front wheel assembly 10 to push the cart towards the back frame 3.

The trolley frame also comprises a reversing lock 74 for locking the handle bar rest 7 in the above-mentioned forward and reverse operating positions. Here, the reversing lock 74 described above is provided on each side of the push-down knob 71, the push-forward locking seats 32 are provided on both the left and right sides of the back rest 3, and the push-reverse locking seats 64 are provided on both the left and right side base bars 61 of the armrest frame 6. When the push handle frame 7 is in the forward working position, the reversing locking piece 74 and the push handle forward locking seat 32 on the corresponding side are mutually matched and locked so that the push handle frame 7 is locked relative to the backrest frame 3; when the handle bar frame 7 is in the reverse operating position, the reversing lock 74 is locked with the handle bar reverse lock seat 64 on the corresponding side so that the handle bar frame 7 is locked with respect to the armrest frame 6.

Thus, referring to fig. 1 and 2, when the cart frame is in a unfolded state, the front bracket 1, the rear bracket 2 and the backrest frame 3 are unfolded relatively, the seat frame 4 is supported between the front bracket 1 and the lower bracket of the rear bracket 2 along the front-rear direction, the stay bar frame 5 is supported between the backrest frame 3 and the lower bracket of the rear bracket 2 along the up-down direction, the upper bracket and the lower bracket of the rear bracket 2 are contracted relatively, and the upper sliding sleeve bars 21 of the rear struts at each side are propped against the limiting sleeves 23 of the bracket rod bodies 22 downwards; the primary locking joint 8 locks the stroller frame in a stable unfolded state. The user can lock the handle bar rest 7 with respect to the back rest 3 to be in the forward operating position as shown in fig. 1 or lock the handle bar rest 7 with respect to the back rest 3 to be in the reverse operating position as shown in fig. 2, as desired.

When the cart frame needs to be folded, referring to fig. 3 to 5, the push handle frame 7 is first in a forward working position, the push handle 72 is turned forward and folded relative to the push handle 71 according to fig. 3, the main locking joint 8 is driven to be unlocked in a linkage manner in the folding process of the push handle frame 7, the backrest frame 3 is driven to be turned backward together with the push handle frame 7, so that the seat frame 4 and the support rod frame 5 are opposite to the support rod body 22 of the rear support 2, the front support 1 and the rear support 2 are driven to be gradually folded along the front-rear direction, and meanwhile, the sliding sleeve rod 21 of the rear support 2 is gradually extended upwards relative to the support rod body 22, so that the rear support 2 is extended. Until the front bracket 1, the rear bracket 2 and the backrest frame 3 are mutually close together, the seat frame 4 and the stay bar frame 5 are folded in the backrest frame, as shown in figure 5; finally, the handrail rod 62 of the handrail frame 6 is turned downwards to be folded at the front side of the front bracket 1, so that the folding of the trolley frame is completed. In the folded cart frame, the two rear wheel assemblies 20 are located between the two front wheel assemblies 10 in the left-right direction, the rear wheel assemblies 20 are shielded by the front wheel assemblies 10 as seen from the side of the frame, and the front wheel assemblies 10 and the rear wheel assemblies 20 are supported on the ground together.

During the setting, the armrest locking joint 63 and the main locking joint 8 can be set in a linkage manner, specifically, a linkage structure is set between the connection, so that after the cart frame main body is folded, that is, after the front support 1, the rear support 2 and the backrest 3 of the cart frame are folded, the armrest rod 62 is driven to rotate relative to the base rod 61, the main locking joint 8 is driven to be converted from the unlocking state to the locking state by the linkage structure, and the front support 1, the rear support 2 and the backrest 3 are locked again, so that the cart frame is locked in the folding state, and the storage of the folded cart frame are facilitated.

When the cart frame needs to be opened, the locking mechanism of the whole cart is unlocked by operating the unlocking handle 9, and then the backrest frame 3 or the pushing handle frame 7 is lifted and swung, so that each rod piece of the cart frame can be opened by relative rotation under the action of self gravity until each locking joint of the locking mechanism is locked again, and the opening of the cart frame is completed.

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 utility model provides a children's shallow, includes has the shallow frame of expansion state and folding state, locates the front wheel subassembly at shallow frame bottom front portion, locates the rear wheel subassembly at shallow frame bottom rear portion, and be used for with shallow frame locking mechanism under the expansion state, its characterized in that: the cart frame includes: the bottom is provided with a front bracket of the front wheel assembly, a rear bracket of the rear wheel assembly, a backrest frame, a stay bar frame, a seat frame and a push handle frame, wherein the upper part of the front bracket, the upper part of the rear bracket, the lower part of the push handle frame and the lower part of the backrest frame are mutually and rotatably connected together; the rear bracket comprises an upper bracket and a lower bracket which relatively slide and stretch along the length direction, the upper part of the upper bracket is rotationally connected with the front bracket or the backrest frame, the seat frame is rotationally connected between the front bracket and the lower bracket, the supporting rod frame is rotationally connected between the backrest frame and the lower bracket,

The lower part of the push handle frame is rotatably connected to the upper part of the front bracket, the upper part of the rear bracket or the lower part of the backrest frame, the push handle frame is provided with a forward working position and a reverse working position, and when the push handle frame is in the forward working position, the push handle frame gradually and upwards inclines and extends from front to back; when the push handle frame is in a reverse working position, the push handle frame gradually extends upwards from back to front, when the cart frame is in a folded state, the upper bracket and the lower bracket relatively slide to enable the rear bracket to extend, the push handle frame and the backrest frame are folded together at the rear side of the rear bracket,

The locking mechanism comprises a main locking joint arranged between the upper part of the front bracket, the upper part of the rear bracket and the lower part of the backrest frame,

The front bracket comprises two front struts which are respectively arranged at the left side and the right side, the trolley frame also comprises a handrail frame which is arranged between the upper parts of the front struts at the two sides, the handrail frame comprises a base rod which is fixedly connected with the front struts and extends forwards, and a handrail rod which is rotationally connected between the base rods at the two sides, when the trolley frame is in a folding state, the handrail rod overturns relative to the base rod and is folded at the front side of the front bracket,

The handrail frame also comprises a handrail locking joint arranged between the base rod and the handrail rod, wherein the handrail locking joint and the main locking joint are provided with a linkage structure, and when the front support, the rear support and the backrest frame are mutually folded, the handrail rod rotates relative to the base rod, and the linkage structure drives the main locking joint to be converted from an unlocking state to a locking state, so that the trolley frame is locked in the folding state.

2. The stroller of claim 1, wherein: the upper support comprises a sliding sleeve rod, the lower support comprises a support rod body, the sliding sleeve rod can be arranged on the upper portion of the support rod body in a relatively sliding mode, a limiting sleeve is fixedly arranged on the support rod body, and when the trolley frame is in a unfolding state, the limiting sleeve abuts against the bottom end portion of the sliding sleeve rod.

3. The stroller of claim 2, wherein: the seat frame and/or the stay bar frame are/is rotatably connected to the limit sleeve to realize the rotary connection with the lower bracket.

4. The stroller of claim 2, wherein: the rear support comprises two rear support rods which are respectively arranged at the left side and the right side, each rear support rod comprises a sliding sleeve rod and a support rod body, and the lower part of each support rod body at each side is provided with a rear wheel assembly.

5. The stroller of claim 1, wherein: the support rod frame extends in the up-down direction, the seat frame extends in the front-back direction, and the lower part of the support rod frame and the rear part of the seat frame are respectively and rotatably connected with the lower bracket; or the lower part of the stay bar frame and the rear part of the seat frame are rotationally connected to the lower bracket around the same rotation center line; or the lower part of the support rod frame is rotatably connected with the rear part of the seat frame, and one of the lower part of the support rod frame and the rear part of the seat frame is rotatably connected with the lower bracket.

6. The stroller of claim 1, wherein: the trolley frame also comprises a handrail frame which is arranged on the upper part of the front bracket and extends forwards, and a reversing locking piece which is used for locking the trolley frame in the forward working position and the reverse working position is also arranged on the trolley frame; when the handle pushing frame is in the reverse working position, the reversing locking piece locks the handle pushing frame and the handrail frame with each other.

7. The stroller of claim 1, wherein: the front support comprises two front support rods which are respectively arranged at the left side and the right side, and the bottom of each front support rod is provided with the front wheel assembly; the rear support comprises two rear supporting rods which are respectively arranged at the left side and the right side, the bottom of each rear supporting rod is provided with a rear wheel assembly, when the trolley frame is in a folded state, the two rear wheel assemblies are positioned between the two front wheel assemblies along the left-right direction, and the front wheel assemblies and the rear wheel assemblies are jointly supported on the ground.