CN114454946A

CN114454946A - Baby stroller frame, baby stroller and folding method of baby stroller

Info

Publication number: CN114454946A
Application number: CN202210282225.5A
Authority: CN
Inventors: 胡杰
Original assignee: Mamas and Papas Holdings Ltd
Current assignee: Mamas and Papas Holdings Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2022-05-10
Also published as: CN110667680A

Abstract

The invention discloses a baby stroller frame which comprises an upper push rod, a lower push rod, a front support, a rear support, a first rotating joint, a second rotating joint and an unlocking trigger mechanism, wherein the unlocking trigger mechanism is installed on the upper push rod, the lower end of the upper push rod is connected with the upper end of the lower push rod through the first rotating joint, the lower end of the lower push rod is connected with the upper ends of the front support and the rear support through the second rotating joint, and the unlocking trigger mechanism is used for triggering the first rotating joint to unlock and triggering the second rotating joint to unlock after the lower push rod is rotated. The invention also discloses a baby stroller, a folding method of the baby stroller frame and a folding method of the baby stroller. According to the invention, the first rotating joint is unlocked by operating the unlocking trigger mechanism, the upper push rod is turned backwards and downwards to realize unlocking of the second rotating joint, then the lower push rod is turned forwards and downwards, and finally the rear support and the front support are folded.

Description

Baby stroller frame, baby stroller and folding method of baby stroller

Technical Field

The invention relates to the technical field of baby strollers, in particular to a baby stroller frame, a baby stroller, a folding method of the baby stroller frame and a folding method of the baby stroller.

Background

The folding mode of the existing baby stroller frame is complex, the baby stroller frame is not easy to operate by a user, and the volume after being folded is large.

Therefore, there is a need for a stroller frame, a stroller, a method for folding a stroller frame, and a method for folding a stroller that are easy to operate and compact.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a baby stroller frame, a baby stroller, a folding method of the baby stroller frame and a folding method of the baby stroller, which are convenient to operate and fold and have smaller folded volume.

The invention provides a baby stroller frame which comprises an upper push rod, a lower push rod, a front support, a rear support, a first rotating joint, a second rotating joint and an unlocking trigger mechanism, wherein the unlocking trigger mechanism is installed on the upper push rod, the lower end of the upper push rod is connected with the upper end of the lower push rod through the first rotating joint, the lower end of the lower push rod is connected with the upper ends of the front support and the rear support through the second rotating joint, and the unlocking trigger mechanism is used for triggering the first rotating joint to unlock and triggering the second rotating joint to unlock after the lower push rod is rotated.

Furthermore, the unlocking trigger mechanism comprises a key, and the unlocking trigger mechanism is used for unlocking after the key is pressed and drives the first rotating joint to unlock through rotation.

Furthermore, the unlocking trigger mechanism further comprises an upper semicircular shell, a telescopic piece, a spring and a lower semicircular shell, wherein the upper semicircular shell and the lower semicircular shell are spliced into a cylindrical pipe, one part of the key extends out of the lower semicircular shell, the key is installed between the lower semicircular shell and the spring, the telescopic piece is connected with the upper semicircular shell, and two ends of the telescopic piece are respectively connected with an upper steel wire;

after the key is pressed, the unlocking trigger mechanism is unlocked, the key, the upper semicircular shell and the lower semicircular shell compress the telescopic piece after rotating, and the telescopic piece pulls the upper steel wire to drive the first rotating joint to unlock.

Furthermore, the upper push rod comprises an inner tube and an outer tube, and the cylindrical tube is sleeved outside the inner tube;

the unlocking triggering mechanism further comprises a sleeve, the sleeve is fixedly connected with the outer pipe, two ends of the cylindrical pipe are respectively inserted into the sleeve and can rotate, a locking groove is formed in the sleeve, locking blocks extend from two ends of the key and are inserted into the locking grooves, when the key is pressed, the locking blocks are separated from the locking grooves, and the cylindrical pipe can rotate relative to the sleeve.

Furthermore, the telescopic part comprises a first connecting part, a second connecting part, a first telescopic rod and a second telescopic rod, the first connecting part is connected with one end of the first telescopic rod, the second connecting part is connected with one end of the second telescopic rod, the other end of the first telescopic rod is connected with the other end of the second telescopic rod, the first connecting part and the second connecting part are respectively connected with one upper steel wire, and slope bosses are arranged on the first connecting part and the second connecting part;

two slope grooves are formed in the upper semicircular shell, the slope bosses are embedded into the slope grooves, and when the upper semicircular shell rotates, the slope grooves push the two slope bosses to drive the first telescopic rod and the second telescopic rod to mutually approach and retract.

Further, the first rotating joint comprises an upper push rod rotating shell, a lower push rod rotating shell and an upper locking piece;

the upper push rod rotating shell is connected with the lower end of the upper push rod, the lower push rod rotating shell is connected with the upper end of the lower push rod, the upper locking piece is connected with the unlocking trigger mechanism through an upper steel wire, and the first rotating joint is unlocked when the upper locking piece is pulled by the upper steel wire.

Furthermore, the first rotary joint also comprises a gear, a first gear groove is arranged in the upper push rod rotary shell, a second gear groove is arranged in the lower push rod rotary shell,

the gear is embedded into the first gear groove and the second gear groove when the first rotary joint is locked;

when the upper locking piece moves upwards, the gear is separated from the first gear groove or the second gear groove, and the first rotating joint is unlocked.

Furthermore, the second rotary joint comprises a lower steel wire and a lower locking piece, and after the upper push rod rotates, the lower steel wire pulls the lower locking piece to unlock the second rotary joint.

Further, the second rotating joint comprises a lower push rod rotating piece, a front support rotating piece and a rear support rotating piece;

the lower push rod rotating part is connected with the lower end of the lower push rod, and the lower push rod rotating part is rotatably connected with the front support rotating part through a first rotating shaft;

the front support rotating piece is connected with the upper end of the front support, and the front support rotating piece is rotatably connected with the rear support rotating piece through a second rotating shaft;

the rear support rotating piece is connected with the upper end of the rear support;

the lower push rod rotating piece, the front support rotating piece and the rear support rotating piece are all provided with lower locking grooves, the lower locking piece is inserted into the lower locking grooves, and the second rotating joint is locked.

The invention also provides a baby stroller, which comprises a seat frame assembly and the baby stroller frame, wherein the seat frame assembly is arranged on the baby stroller frame.

Further, the baby stroller frame further comprises a first connecting rod, one end of the first connecting rod is rotatably connected with the lower push rod, and the other end of the first connecting rod is connected with the seat frame assembly.

Further, the seat frame assembly comprises a first connecting column and a second connecting column, the front bracket is connected with the seat frame assembly through the first connecting column, and the rear bracket is connected with the seat frame assembly through the second connecting column.

Further, the baby stroller frame further comprises a second connecting rod and a third connecting rod, one end of the second connecting rod is rotatably connected with the other end of the first connecting rod, the other end of the second connecting rod is rotatably connected with one end of the third connecting rod, and the other end of the third connecting rod is connected with the seat frame assembly.

The invention also provides a method for folding a baby carriage frame of any one of the baby carriage frames, which comprises the following steps:

operating the unlocking trigger mechanism to unlock the first rotating joint;

the upper push rod is turned backwards and downwards to be close to the lower push rod;

the second rotary joint is unlocked, and the lower push rod is turned forwards and downwards to be close to the front support;

the baby stroller frame is lifted, and the front implementation support and the rear implementation support naturally draw together under the action of gravity.

Further, the step of operating the unlock trigger mechanism to unlock the first rotational joint further comprises:

pressing a key of the unlocking trigger mechanism;

the unlock trigger mechanism is rotated forward.

The present invention also provides a method of collapsing a stroller for use with a stroller as defined in any one of the preceding claims, comprising the steps of:

folding the seat frame assembly;

operating the unlocking trigger mechanism to unlock the first rotating joint;

and lifting the handle hole on the seat frame assembly, and folding the front support and the rear support.

After adopting above-mentioned technical scheme, have following beneficial effect:

according to the invention, the first rotary joint is unlocked by operating the unlocking trigger mechanism, the upper push rod is turned backwards and downwards to unlock the second rotary joint, then the lower push rod is turned forwards and downwards, and finally the rear support and the front support are folded.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

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

FIG. 2 is a top-down exploded view of the release trigger mechanism of the stroller frame according to the first embodiment of the present invention;

FIG. 3 is an exploded bottom view of the release trigger mechanism of the stroller frame according to one embodiment of the present invention;

FIG. 4 is an exploded left view of the first pivot joint of the stroller frame according to one embodiment of the present invention;

FIG. 5 is an exploded view from the right of the first pivot joint of the stroller frame in accordance with one embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of the first pivot joint of the stroller frame according to the first embodiment of the present invention;

FIG. 7 is a left perspective exploded view of FIG. 6;

FIG. 8 is a right perspective exploded view of FIG. 6;

FIG. 9 is a perspective view of a second pivot joint of the stroller frame according to the first embodiment of the present invention;

FIG. 10 is an exploded left view of the second pivot joint of the stroller frame according to the first embodiment of the present invention;

FIG. 11 is an exploded view from the right of a second pivot joint of the stroller frame according to the first embodiment of the present invention;

FIG. 12 is an enlarged view of a second pivot joint of the stroller frame according to the first embodiment of the present invention;

FIG. 13 is an enlarged partial view of the rear fork of FIG. 12 with the rear fork omitted;

FIG. 14 is a partial enlarged view of FIG. 13 with the lower push rod rotating member and lower locking member omitted;

FIG. 15 is an enlarged partial view of the front carrier rotating member of FIG. 14 with the front carrier rotating member omitted;

FIG. 16 is a perspective view of the stroller frame in a folded state according to one embodiment of the present invention;

FIG. 17 is a perspective view of a stroller in accordance with a second embodiment of the present invention in an expanded position;

FIG. 18 is a perspective view of the stroller in a collapsed state according to the second embodiment of the present invention;

FIG. 19 is an enlarged, fragmentary view of a stroller in accordance with a second embodiment of the present invention;

FIG. 20 is a rear perspective partially enlarged view of a stroller in accordance with a second variation of the present invention;

fig. 21 is a top partially enlarged view of a stroller according to a second modification of the embodiment of the present invention.

Reference numerals comparison table:

the baby stroller frame 20: an upper push rod 21, a lower push rod 22, a front bracket 23, a rear bracket 24, a first rotating joint 25, a second rotating joint 26, an unlocking trigger mechanism 27, a first connecting rod 28, a second connecting rod 29a and a third connecting rod 29 b;

the upper push rod 21: inner tube 211, outer tube 212;

first rotary joint 25: an upper push rod rotating housing 251, a lower push rod rotating housing 252, an upper locking piece 253, a gear 254, an upper cover plate 255, a spring mounting seat 256, a pushing spring 257, a reset piece 258, a first gear groove 2511, an entry groove 2512, a second gear groove 2521, an upper locking block 2531, an upper locking groove 2541, a first slope 2542, a slot 2543, an insertion arm 2561, a lower wire hook 2581 and a second slope 2582;

second rotary joint 26: a lower wire 261, a lower locking member 262, a lower push rod rotation member 263, a front bracket rotation member 264, a rear bracket rotation member 265, a first rotation shaft 266, a second rotation shaft 267, a lower locking groove 268, a lower cover plate 269, a return spring 2611, a front fork 2641, and a rear fork 2651;

unlock trigger mechanism 27: the key 271, the upper semicircular shell 272, the telescopic piece 273, the lower semicircular shell 274, the sleeve 275, the spring mounting block 276, the locking block 2711, the spring mounting post 2712, the convex strip 2713, the slope slot 2721, the upper insert piece 2722, the first connecting piece 2731, the second connecting piece 2732, the first telescopic rod 2733, the second telescopic rod 2734, the slope boss 2735, the key hole 2741, the guide slot 2742, the lower insert piece 2743, the locking slot 2751 and the spring slot 2761;

the seat frame assembly 10: the backrest rotating joint 13, the grab bar 15, the first connecting post 123, the handle hole 1212 and the second connecting post 1322.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

The first embodiment is as follows:

fig. 1 to 16 are schematic structural views of a stroller frame according to a first embodiment.

As shown in fig. 1, the stroller frame 20 includes an upper push rod 21, a lower push rod 22, a front bracket 23, a rear bracket 24, a first rotating joint 25, a second rotating joint 26, and an unlocking trigger mechanism 27, wherein the unlocking trigger mechanism 27 is mounted on the upper push rod 21, a lower end of the upper push rod 21 is connected to an upper end of the lower push rod 22 through the first rotating joint 25, a lower end of the lower push rod 22 is connected to the front bracket 23 and an upper end of the rear bracket 24 through the second rotating joint 26, the unlocking trigger mechanism 27 is used for triggering the first rotating joint 25 to unlock, and the lower push rod 22 is rotated to trigger the second rotating joint 26 to unlock.

In the embodiment, the unlocking trigger mechanism 27 is operated to unlock the first rotating joint 25, the upper push rod 21 is turned backwards and downwards to unlock the second rotating joint 26, then the lower push rod 21 is turned forwards and downwards, and finally the rear support 24 and the front support 23 are folded.

Unlocking the trigger mechanism:

as shown in fig. 2-3, the unlocking trigger mechanism 27 includes a button 271, and the unlocking trigger mechanism 27 is configured to unlock itself after pressing the button 271 and drive the first rotating joint 25 to unlock through rotation.

Specifically, the unlocking trigger mechanism 27 is installed at the top center of the upper push rod 21, and the button 271 faces downward, so that when the user holds the unlocking trigger mechanism 27 with four fingers, the button 271 can be pressed.

Further, the unlocking triggering mechanism 27 further includes an upper semicircular shell 272, a telescopic member 273, a spring (not shown) and a lower semicircular shell 274, the upper semicircular shell 272 and the lower semicircular shell 274 are spliced to form a cylindrical tube, a part of the key 271 extends out of the lower semicircular shell 272, the key 271 is installed between the lower semicircular shell 274 and the spring, the telescopic member 273 is connected with the upper semicircular shell 272, and two ends of the telescopic member 273 are respectively connected with at least one upper steel wire (not shown);

after the button 271 is pressed, the unlocking and unlocking trigger mechanism 27 is unlocked, the button 271, the upper semicircular shell 272 and the lower semicircular shell 274 compress the telescopic piece 273 after rotating, and the telescopic piece 273 pulls the upper steel wire to drive the first rotating joint 25 to unlock.

Specifically, as shown in fig. 3, the key 271 is a long strip, and the protrusion 2713 of the key 271 is a long strip oval, and is exposed outside the unlocking trigger mechanism 27, so that a sufficient area is provided for four fingers to simultaneously act on the protrusion 2713.

A portion of the key 271 fits inside the small semicircular shell 274, and a rib 2713 projects downward from a key hole 2741 of the lower semicircular shell 274. The two ends of the key 271 extend outwards to form a locking block 2711, the inner sides of the two ends of the lower semicircular shell 274 extend out to form lower insertion pieces 2743 respectively, a guide groove 2742 is formed in the lower insertion pieces 2743, and the locking block 2711 is inserted into the guide groove 2742. When the push button 271 is pressed, it will not be pulled out from the guide groove 2742, and the push button 271 and the lower half-round housing 274 will rotate together.

As shown in fig. 2, a groove is formed on the upper surface of the protruding strip 2713 of the key 271, two spring mounting posts 2712 are mounted in the groove, and a spring (not shown) is sleeved on the spring mounting posts 2712.

As shown in fig. 3, two circular spring grooves 2761 are opened on the surface of the spring mounting block 276 facing the push button 271, the top end of the spring is inserted into the spring grooves 2761, and the spring mounting block 276 abuts against the inner tube 211 of the push rod 21. When the button 271 is pressed, the button 271 pushes the spring upward; when the key 271 is released, the key 271 is returned by the spring, and the protrusion 2713 protrudes downward from the key hole 2741.

Further, as shown in fig. 2, the upper push rod 21 includes an inner tube 211 and two outer tubes 212, and the cylindrical tube is sleeved outside the inner tube 211;

the unlocking trigger mechanism 27 further comprises two sleeves 275, the sleeves 275 are respectively fixedly connected with the two outer tubes 212, two ends of each cylindrical tube are respectively inserted into the two sleeves 275 and can rotate, locking grooves 2751 are formed in the sleeves 275, locking blocks 2711 extend out of two ends of each key 271, the locking blocks 2711 are inserted into the locking grooves 2751, when the keys 271 are pressed, the locking blocks 2711 are separated from the locking grooves 2751, and the cylindrical tubes can rotate relative to the sleeves 275.

The lower tab 2743 of the lower semicircular shell 274 is inserted into the sleeve 275 and the body of the lower semicircular shell 274 abuts the edge of the sleeve 275.

Upper tabs 2722 extend outwardly from opposite ends of the upper housing 275, the upper tabs 2722 also being received in the sleeve 275, the body of the upper housing 275 abutting the edges of the sleeve 275.

When the push button 271 is pressed, the locking piece 2711 is firstly released from the locking groove 2751, the unlocking trigger mechanism 27 is unlocked, and then the locking piece 2711 enters the guide groove 2742. The push button 271, the upper semicircular shell 272 and the lower semicircular shell 274 can rotate with respect to the sleeve 275 and the push-up rod 21, while the expansion member 273 is not rotated.

For user convenience, the upper and lower

semi-circular shells

272 and 274 may be rotated toward the front of the stroller to form a cylindrical tube.

Further, as shown in fig. 2-3, the telescopic member 273 includes a first connecting member 2731, a second connecting member 2732, a first telescopic rod 2733 and a second telescopic rod 2734, the first connecting member 2731 is connected to one end of the first telescopic rod 2733, the second connecting member 2732 is connected to one end of the second telescopic rod 2734, the other end of the first telescopic rod 2733 is connected to the other end of the second telescopic rod 2734, the first connecting member 2731 and the second connecting member 2732 are respectively connected to an upper steel wire, and the first connecting member 2731 and the second connecting member 2732 are both provided with a slope boss 2735;

two slope grooves 2721 are formed in the upper semicircular shell 272, the slope bosses 2735 are embedded into the slope grooves 2721, and when the upper semicircular shell 272 rotates, the slope grooves 2721 push the two slope bosses 2735 to drive the first telescopic rod 2733 and the second telescopic rod 2734 to mutually approach and retract.

Wherein the first telescopic bar 2733 is inserted into the second telescopic bar 2734, and a spring is installed in the second telescopic bar 2734.

Ramp boss 2735 is generally triangular in shape and includes two sloped surfaces. The ramp slot 2721 also has two ramps, one of which has a length greater than the other.

When the upper half-shell 272 is rotated in the forward direction, the longer slope pushes against the ramp boss 2735, causing the two ramp bosses 2735 to approach each other, driving the first telescopic bar 2733 and the second telescopic bar 2734 to retract toward each other.

When the user releases the unlocking triggering mechanism 27, the first telescopic rod 2733 and the second telescopic rod 2734 are away from each other and extend out, the slope boss 2735 pushes the upper semicircular shell 272 to rotate reversely, and the upper semicircular shell 272 drives the lower semicircular shell 274 and the key 271 to rotate reversely to return.

The first connecting member 2731 and the second connecting member 2732 are both provided with steel wire holes for connecting one end of an upper steel wire (not shown).

When the first telescopic bar 2733 and the second telescopic bar 2734 are retracted close to each other, one end of the upper wire is pulled, and the upper wire drives the first rotary joint 25 to unlock.

When the unlocking trigger mechanism 27 needs to be operated, one hand of a user holds the upper semicircular shell 272 and the lower semicircular shell 274 to be spliced into a cylindrical pipe, firstly presses the key 271, and then rotates the upper semicircular shell 272 and the lower semicircular shell 274 to be spliced into the cylindrical pipe. The unlocking by one-hand operation is realized, and the unlocking can be finished at one time. The operation can be completed without simultaneous operation of two hands, complex operation gestures or two-time operation.

A first rotary joint:

as shown in fig. 4 to 8, the first rotary joint 25 includes an upper push rod rotary housing 251, a lower push rod rotary housing 252, and an upper locking piece 253;

the upper push rod rotation housing 251 is connected to the lower end of the upper push rod 21, the lower push rod rotation housing 252 is connected to the upper end of the lower push rod 22, the upper locking member 253 is connected to the first connecting member 2731 and the second connecting member 2732 of the unlocking trigger mechanism 27 via the upper wire, and the upper wire pulls the upper locking member 253 to unlock the first rotary joint 25.

Further, as shown in fig. 4-8, the first rotary joint 25 further includes a gear 254, a first gear groove 2511 is formed in the upper push rod rotary housing 251, a second gear groove 2521 is formed in the lower push rod rotary housing 252,

when the first rotary joint 25 is locked, the gear 254 is fitted into the first gear groove 2511 and the second gear groove 2521;

when the upper locking member 253 moves upward, the gear 254 is disengaged from the first gear groove 2511 or the second gear groove 2521, and the first rotary joint 25 is unlocked.

Specifically, the upper push rod rotation housing 251, the lower push rod rotation housing 252, and the gear 254 are coaxially connected.

The gear 254 includes a plurality of teeth, an upper locking groove 2541 is formed at an edge of the gear 254, the upper locking piece 2531 of the upper locking piece 253 extends downward and is inserted into the upper locking groove 2541, the upper locking piece 253 locks the gear 254, the gear 254 cannot rotate, the upper push rod rotating housing 251 and the lower push rod rotating housing 252 cannot rotate relative to each other, at this time, the first rotating joint 25 is locked, and the upper push rod 21 and the lower push rod 22 cannot rotate and fold.

When the upper lock piece 253 is pulled upward by the upper wire, the upper lock piece 2531 is disengaged from the upper lock groove 2541. At this time, the restoring member 258 pushes the gear 254 to move toward the first gear groove 2511 in the axial direction, and is completely inserted into the first gear groove 2511 and removed from the second gear groove 2521, the lower push rod rotation housing 252 and the upper push rod rotation housing 251 are rotatably connected only by a rotation shaft (not shown), and the lower push rod rotation housing 252 can rotate relative to the upper push rod rotation housing 251, so that the upper push rod 21 relatively rotates relative to the lower push rod 22.

Further, as shown in fig. 6 to 7, the upper locking member 253 is installed in the connection pipe 2513 of the upper push rod rotation housing 251, an entry groove 2512 communicating with the connection pipe 2513 is further opened in the first gear groove 2511, the entry groove 2512 axially corresponds to the upper locking groove 2541, and the upper locking piece 2531 of the upper locking member 253 is inserted into the entry groove 2512 when locking.

Further, as shown in fig. 4 to 5, the first rotary joint 25 further includes an upper cover plate 255, and the upper cover plate 255 covers the outer side surface of the lower push rod rotary housing 252 to shield the end of the rotary shaft.

Further, as shown in fig. 7 to 8, the first rotary joint 25 further includes a spring mount 256, a push spring 257 and a restoring member 258, the push spring 257 is mounted on the spring mount 256, the spring mount 256 includes a plug arm 2561 extending toward the gear 254, a slot 2543 is provided on the gear 254, and the plug arm 2561 is inserted into the slot 2543.

The restoring member 258 comprises a lower wire hook 2581 and a second slope 2582, wherein the lower wire hook 2581 is connected with one end of the lower wire and used for driving the lower wire. Two second ramps 2582 are located on a side of the restoring member 258 facing the gear 254, and a corresponding first ramp 2542 is provided on the gear 254, and the first ramp 2542 contacts with the second ramp 2582.

When the upper locking member 253 is released upward, the biasing spring 257 is expanded to axially push the restoring member 258 toward the gear 254, and the second ramp 2582 pushes the first ramp 2542 to axially move, so that the gear 254 moves toward the first gear groove 2511 and is released from the second gear groove 2521, thereby unlocking the first rotary joint 25.

After unlocking, the upper push rod 21 drives the upper push rod rotating shell 251, the gear 254, the spring mounting seat 256, the pushing spring 257 and the resetting piece 258 to rotate backwards and downwards, and the resetting piece 258 pulls the lower steel wire when rotating, so that the second rotating joint 26 is unlocked.

The unlocking trigger mechanism 27 drives the first rotating joint 25 to unlock through the upper steel wire, and the first rotating joint 25 drives the second rotating joint 26 to unlock through the lower steel wire. The two-section unlocking mode enables the second rotating joint 26 to be unlocked only after the first rotating joint 25 is unlocked and the upper push rod 21 is rotated and folded. The first rotary joint 25 and the second rotary joint 26 are not unlocked simultaneously, and the user must first rotate the upper push rod 21 to unlock the second rotary joint 26 and rotate the lower push rod 22. The folding sequence is unique, and the user can conveniently and sequentially operate according to the set folding sequence. If the first rotary joint 25 and the second rotary joint 26 are unlocked at the same time, it may not be known to the user whether the upper push rod 21 or the lower push rod 22 should be folded first.

A second revolute joint:

as shown in fig. 9 to 15, the second revolute joint 26 includes a lower wire 261 and a lower locking member 262, and when the upper push rod 21 is rotated, the lower wire 261 pulls the lower locking member 262 to unlock the second revolute joint 26.

Further, the second rotating joint 26 further includes a lower push rod rotating member 263, a front bracket rotating member 264 and a rear bracket rotating member 265;

the lower push rod rotating part 263 is connected with the lower end of the lower push rod 22, and the lower push rod rotating part 263 is rotatably connected with the front bracket rotating part 264 through a first rotating shaft 266;

the front supporter rotating member 264 is connected to the upper end of the front supporter 23, and the front supporter rotating member 264 and the rear supporter rotating member 265 are rotatably connected by a second rotating shaft 267;

the rear bracket rotating piece 265 is connected with the upper end of the rear bracket 24;

the lower push rod rotation element 263, the front support rotation element 264 and the rear support rotation element 265 are all provided with a lower locking groove 268, the lower locking element 262 is inserted into the lower locking groove 268, and the second rotation joint 26 is locked.

Specifically, the lower push rod rotating member 263 includes two fan-shaped pieces, the front bracket rotating member 264 includes a circular piece, and the two lower push rod rotating members 263 hold the front bracket rotating member 264 therebetween and are rotatably connected by the first rotating shaft 266, so as to realize the relative rotation between the lower push rod 22 and the front bracket 23.

As shown in fig. 14 to 15, the rear supporter rotating unit 265 is wrench-shaped, inserted into the front supporter rotating unit 264, and rotatably coupled by the second rotating shaft 267 to realize the relative rotation of the front supporter 23 and the rear supporter 24.

As shown in fig. 10 to 12, the second rotary joint 26 further includes a rear fork 2651, and the rear fork 2651 holds the installed lower push rod rotating member 263, the front bracket rotating member 264, and the rear bracket rotating member 265 therein, and is rotatably connected by a second rotating shaft 267.

As shown in fig. 10 to 11, the second rotary joint 26 further includes a front fork 2641, and the front fork 2641 holds therein the lower push rod rotating member 263, the front bracket rotating member 264, the rear bracket rotating member 265, and the rear fork 2651 after mounting, and is rotatably connected to the first rotary shaft 266 and the second rotary shaft 267. The outer side of front fork 2641 is covered with a lower cover plate 269 which provides an aesthetic appearance by shielding the internal mounting structure.

In addition to the front fork 2641, the lower lever rotating member 263, the front bracket rotating member 264, the rear bracket rotating member 265, and the rear fork 2651 are provided with lower locking grooves 268. The lower locking groove 268 of the lower lever rotator 263 is a long groove, the lower locking member 262 can slide up and down in the long groove, and the upper end of the lower locking member 262 is connected to the lower end of the lower wire 261. When the lower wire 261 pulls the lower locking member 262, the lower locking member 262 slides upward along the elongated slot, and is disengaged from the lower locking grooves 268 of the front bracket rotating member 264, the rear bracket rotating member 265, and the rear fork 2651, thereby unlocking the second rotating joint 26.

As shown in fig. 13, a return spring 2611 is sleeved on the lower wire 261, and when the lower wire 261 is pulled upward, the return spring 2611 is compressed. When the tension of the lower wire 261 is released, the return spring 2611 pushes the lower locking member 262 downward, and the lower locking member 262 is reinserted into the lower locking groove 268.

The lower rotary joint 26 in this embodiment can not only realize folding of the stroller, but also provide sufficient support for the front support 23, the rear support 24 and the lower push rod 22, thereby increasing the stability of the stroller in the unfolded state.

The folding process is as follows:

as shown in fig. 1, when the stroller frame 20 is folded, the push button 271 is first pressed, and then the cylindrical tube formed by the upper semicircular shell 272 and the lower semicircular shell 274 is rotated forward, so as to unlock the first rotary joint 25;

after unlocking, the upper push rod 21 is turned backwards and downwards, the upper push rod 21 is folded to the rear side of the lower push rod 22, and the second rotary joint 26 is unlocked after the upper push rod 21 is folded;

then the lower push rod 22 is turned forwards and downwards, and the lower push rod 22 and the upper push rod 21 are turned downwards together to be close to the front bracket 23;

finally, the baby stroller frame 20 is lifted, the rear support 24 and the front support 23 naturally close under the action of gravity, the folding of the whole baby stroller frame 20 is completed, and the folded state is shown in fig. 16.

Through implementing this embodiment, can make things convenient for the quick folding of baby's shallow frame to volume after folding is littleer. Because the push rod is divided into two sections by the upper push rod 21 and the lower push rod 22, the volume after folding can be reduced, and the storage is convenient. In addition, the unlocking of the second rotary joint 26 is realized by folding the upper push rod 21, so that the step-by-step operation during folding is facilitated, and the folding device is simple and easy to understand.

Example two:

as shown in fig. 17-19, the stroller includes a seat frame assembly 10 and further includes a stroller frame 20, the seat frame assembly 10 being mounted to the stroller frame 20.

The seat frame assembly 10 includes a grab bar 15 and a backrest swivel joint 13.

Further, as shown in fig. 17, the stroller frame 20 further includes a first connecting rod 28, one end of the first connecting rod 28 is rotatably connected to the lower push rod 22, and the other end thereof is connected to the backrest rotating joint 13 of the seat frame assembly 10.

Further, as shown in fig. 19, the stroller frame 20 further includes a second connecting rod 29a and a third connecting rod 29b, one end of the second connecting rod 29b is rotatably connected to the other end of the first connecting rod 28, the other end of the second connecting rod 29a is rotatably connected to one end of the third connecting rod 29b, and the other end of the third connecting rod 29b is fixedly connected to the grab bar 15 of the seat frame assembly 10.

The first, second and third connecting

rods

28, 29a, 29b act as a supporting connection for the seat frame assembly 10. As shown in fig. 17, the seat frame assembly 10 can be maintained in a stable state when the stroller is unfolded. As shown in fig. 18, the seat frame assembly 10 can be stowed in the stroller frame 20 when the stroller is collapsed.

In this embodiment, the seat frame assembly 10 can be folded independently relative to the stroller frame 20, and can be flexibly adjusted to meet different use requirements.

Alternatively, the seat frame assembly 10 may also be folded together with the stroller frame 20.

As shown in a variation of the second embodiment in fig. 20-21, the seat frame assembly 10 can further include a first connecting rod 28, a first connecting post 123, and a second connecting post 1322; one end of the first connecting rod 28 is rotatably connected with the lower push rod 22, and the other end is connected with the backrest rotating joint 13 of the seat frame assembly 10; the front bracket 23 is connected to the seat frame assembly 10 via a first connecting post 123; the rear bracket 24 is connected 1322 to the seat frame assembly 10 by a second connecting post.

When the stroller frame 20 is unfolded, the first connecting post 123, the second connecting post 1322 and the connecting rod 25 serve as a three-point positioning for the seat frame assembly 10, and the relative positions of the seat frame assembly 10 and other components of the stroller frame 20 are maintained.

When the stroller frame 20 is folded, the respective connection points of the first connection post 123, the second connection post 1322 and the first connection rod 28 are rotated, and the seat frame assembly 10 is rotated with respect to the push-up rod 21, the push-down rod 22, the front bracket 22 and the rear bracket 23.

Through implementing this embodiment, can realize the convenient folding fast of baby's shallow. And the seat frame assembly 10 and the stroller frame 20 are independently folded and folded, so that the adjustment flexibility is increased, and different requirements of users can be met.

Example three:

the folding method of the baby stroller frame comprises the following steps:

operating the unlocking trigger mechanism 27 to unlock the first rotary joint 25;

further, when the unlock trigger mechanism 27 is operated,

firstly pressing the key 271 of the unlocking trigger mechanism 27;

the unlocking trigger 27 is then rotated forward.

The upper push rod 21 is turned backwards and downwards to be close to the lower push rod 22;

the second rotating joint 26 is unlocked, and the lower push rod 22 is turned forwards and downwards to be close to the front support 23;

the stroller frame 20 is lifted up, and the front support 23 and the rear support 24 naturally come close under the action of gravity.

Through implementing this embodiment, can realize convenient, the quick folding of baby's shallow frame.

Example four:

a stroller folding method comprising the steps of:

folding the seat frame assembly 10;

further, when the unlock trigger mechanism 27 is operated,

firstly pressing the key 271 of the unlocking trigger mechanism 27;

the unlocking trigger 27 is then rotated forward.

the front and

rear brackets

23, 24 are naturally collapsed by gravity when lifting the handle hole 1212 (see fig. 18) of the seat frame assembly 10.

Through implementing this embodiment, can realize convenient, the quick folding of baby's shallow.

What has been described is merely illustrative of the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims

1. The utility model provides a baby stroller frame, its characterized in that, includes push-up rod, lower carriage, fore-stock, after-poppet, first revolute joint, second revolute joint and unblock trigger mechanism, unblock trigger mechanism installs on the push-up rod, the lower extreme of push-up rod with pass through between the upper end of lower carriage first revolute joint is connected, the lower extreme of lower carriage with the fore-stock the upper end of after-poppet passes through second revolute joint is connected, unblock trigger mechanism is used for triggering first revolute joint unblock rotates the push-down rod after-triggering second revolute joint unblock.

2. The stroller frame according to claim 1, wherein the unlocking trigger mechanism comprises a button, and the unlocking trigger mechanism is used for unlocking itself after pressing the button and driving the first rotating joint to unlock through rotation.

3. The stroller frame according to claim 2, wherein the unlocking triggering mechanism further comprises an upper semicircular shell, a telescopic member, a spring and a lower semicircular shell, the upper semicircular shell and the lower semicircular shell are spliced to form a cylindrical tube, a part of the key extends out of the lower semicircular shell, the key is installed between the lower semicircular shell and the spring, the telescopic member is connected with the upper semicircular shell, and two ends of the telescopic member are respectively connected with an upper steel wire;

4. The stroller frame according to claim 3, wherein the upper push rod comprises an inner tube and an outer tube, and the cylindrical tube is sleeved outside the inner tube;

5. The stroller frame according to claim 3, wherein the telescopic member comprises a first connecting member, a second connecting member, a first telescopic rod and a second telescopic rod, the first connecting member is connected with one end of the first telescopic rod, the second connecting member is connected with one end of the second telescopic rod, the other end of the first telescopic rod is connected with the other end of the second telescopic rod, the first connecting member and the second connecting member are respectively connected with one upper steel wire, and the first connecting member and the second connecting member are both provided with a slope boss;

6. The stroller frame of claim 1, wherein said first rotational joint comprises an upper push rod rotational housing, a lower push rod rotational housing, and an upper locking member;

7. The stroller frame according to claim 6, wherein the first rotary joint further comprises a gear, the upper push rod rotary housing has a first gear groove formed therein, the lower push rod rotary housing has a second gear groove formed therein,

8. The stroller frame according to claim 1, wherein the second rotating joint comprises a lower wire and a lower locking member, and when the upper push rod is rotated, the lower wire pulls the lower locking member to unlock the second rotating joint.

9. The stroller frame of claim 8, wherein said second rotational joint comprises a lower push rod rotational member, a front frame rotational member and a rear frame rotational member;

10. A stroller comprising a seat frame assembly, further comprising the stroller frame of any of claims 1-9, the seat frame assembly being mounted to the stroller frame.

11. The stroller of claim 10, further comprising a first link, one end of the first link being pivotally connected to the lower link and the other end of the first link being connected to the seat frame assembly.

12. The stroller of claim 11, wherein the seat frame assembly comprises a first attachment post and a second attachment post, the front bracket being connected to the seat frame assembly by the first attachment post, and the rear bracket being connected to the seat frame assembly by the second attachment post.

13. The stroller of claim 11, wherein the stroller frame further comprises a second connecting rod and a third connecting rod, one end of the second connecting rod is rotatably connected to the other end of the first connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is connected to the seat frame assembly.

14. A method of collapsing a stroller frame for a stroller frame according to any of claims 1 to 9, comprising the steps of:

operating the unlocking trigger mechanism to unlock the first rotating joint;

15. A stroller frame folding method according to claim 14, wherein said step of operating said unlocking trigger mechanism to unlock said first pivot joint further comprises:

pressing a key of the unlocking trigger mechanism;

the unlock trigger mechanism is rotated forward.

16. A stroller folding method for a stroller according to any one of claims 10 to 13, comprising the steps of:

folding the seat frame assembly;

operating the unlocking trigger mechanism to unlock the first rotating joint;