CN110667680A - Baby stroller frame, baby stroller and method of folding the same - Google Patents

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 method of folding the same

technical field

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

Background technique

The retracting method of the existing baby stroller frame is complicated, the user is not easy to operate, and the folded volume is large.

Therefore, it is necessary to design a baby stroller frame, a baby stroller, a method for folding the baby stroller frame and a method for folding the baby stroller, which is convenient to operate and retract, and has a smaller volume after being folded.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a baby stroller frame, a baby stroller, a method for folding a baby stroller frame and a method for folding a baby stroller, which is convenient to operate and retract, and has a smaller volume after being folded.

The invention provides a baby stroller frame, which includes 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, and the unlocking trigger mechanism is installed on the push-up On the rod, the lower end of the upper push rod and the upper end of the lower push rod are connected through the first rotating joint, and the lower end of the lower push rod and the upper ends of the front bracket and the rear bracket pass through the joint. The second rotating joint is connected, and the unlocking trigger mechanism is used to trigger the first rotating joint to be unlocked, and the second rotating joint is triggered to unlock after rotating the push-down rod.

Further, the unlocking trigger mechanism includes a button, and the unlocking trigger mechanism is used to unlock itself after pressing the button, and drive the first rotation joint to unlock by rotating.

Further, the unlocking trigger mechanism also includes an upper semicircular shell, a telescopic piece, a spring and a lower semicircular shell, the upper semicircular shell and the lower semicircular shell are spliced into a cylindrical tube, and a part of the key is inserted from the lower semicircular shell. extending, the button is installed between the lower semicircular shell and the spring, the telescopic piece is connected with the upper semicircular shell, and the two ends of the telescopic piece are respectively connected with upper steel wires;

After the button is pressed, the unlocking trigger mechanism is unlocked, the button, the upper semicircular shell and the lower semicircular shell rotate to compress the telescopic piece, and the telescopic piece pulls the upper steel wire to drive the The first rotary joint is unlocked.

Further, the upper push rod includes an inner tube and an outer tube, and the cylindrical tube is sleeved outside the inner tube;

The unlocking trigger mechanism further comprises a sleeve, the sleeve is fixedly connected with the outer pipe, the two ends of the cylindrical pipe are respectively inserted into the sleeve and can be rotated, and the sleeve is provided with a lock The two ends of the button extend out of the locking block, the locking block is inserted into the locking groove, when the button is pressed, the locking block comes out of the locking groove, the The cylindrical tube is rotatable relative to the sleeve.

Further, the telescopic piece includes a first connecting piece, a second connecting piece, a first telescopic rod and a second telescopic rod, the first connecting piece is connected with one end of the first telescopic rod, and the second connecting piece is connected to one end of the first telescopic rod. The connecting piece 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, and the first connecting piece and the second connecting piece are respectively connected with one The upper steel wire, the first connecting piece and the second connecting piece are all provided with slope bosses;

The upper semicircular shell is provided with two ramp grooves, and the ramp bosses are embedded in the ramp grooves. When the upper semicircular shell rotates, the ramp grooves push the two ramp bosses to drive the first ramp. A telescopic rod and the second telescopic rod are retracted close to each other.

Further, the first rotating joint includes an upper push rod rotating casing, a lower push rod rotating casing and an upper locking member;

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, and the upper locking piece is connected to the unlocking trigger mechanism through the upper steel wire When the upper wire pulls the upper locking member, the first rotating joint is unlocked.

Further, the first rotating joint further includes a gear, the upper push rod rotating housing is provided with a first gear slot, and the lower push rod rotating housing is provided with a second gear slot,

When the first rotating joint is locked, the gear is embedded in the first gear slot and the second gear slot;

When the upper locking member moves upward, the gear is disengaged from the first gear slot or the second gear slot, and the first rotating joint is unlocked.

Further, the second rotating joint includes a lower wire and a lower locking member, and after the upper push rod is rotated, the lower wire pulls the lower locking member to unlock the second rotating joint.

Further, the second rotating joint includes a lower push rod rotating member, a front support rotating member and a rear support rotating member;

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

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

the rear bracket rotating member is connected with the upper end of the rear bracket;

A lower locking groove is formed on the lower push rod rotating member, the front support rotating member and the rear support rotating member, the lower locking member is inserted into the lower locking groove, and the second rotating joint is locked .

The present invention also provides a baby stroller, comprising a seat frame assembly, and the baby stroller frame according to any one of the above, wherein the seat frame assembly is mounted on the baby stroller frame.

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

Further, the seat frame assembly includes a first connecting column and a second connecting column, the front bracket is connected to the seat frame assembly through the first connecting column, and the rear bracket is connected to the seat frame The components are connected by the second connecting column.

Further, the baby stroller frame further includes 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, and the second connecting rod is rotatably connected to the other end of the first connecting rod. The other end 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 present invention also provides a method for folding a stroller frame for use in any of the above-mentioned stroller frames, comprising the following steps:

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

Turn the upper push rod backward and downward to be close to the lower push rod;

The second rotating joint is unlocked, and the lower push rod is turned forward and downward to approach the front bracket;

Lift the baby stroller frame, and the front support and the back support will naturally move closer to each other under the action of gravity.

Further, the step of operating the unlocking trigger mechanism to unlock the first rotating joint further includes:

pressing the button of the unlocking trigger mechanism;

Rotate the unlock trigger mechanism forward.

The present invention also provides a baby stroller folding method for any one of the above-mentioned baby strollers, comprising the following steps:

folding the seat frame assembly;

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

Turn the upper push rod backward and downward to be close to the lower push rod;

The second rotating joint is unlocked, and the lower push rod is turned forward and downward to approach the front bracket;

Lift the handle hole on the seat frame assembly, and the front bracket and the rear bracket are folded.

After adopting the above-mentioned technical scheme, it has the following beneficial effects:

The present invention unlocks the first rotating joint by operating the unlocking trigger mechanism, the upper push rod is turned backward and downward to unlock the second rotating joint, then the lower push rod is turned forward and downward, and finally the rear bracket and the front bracket are closed. The invention is convenient to operate and collect the vehicle, and the folded volume can be smaller, which is convenient for storage.

Description of drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. It should be understood that these drawings are only for the purpose of illustration and are not intended to limit the protection scope of the present invention. In the picture:

Fig. 1 is the perspective view of the unfolded state of the baby stroller frame in the first embodiment of the present invention;

2 is an exploded top view of the unlocking trigger mechanism of the baby stroller frame in the first embodiment of the present invention;

FIG. 3 is an exploded view from the bottom of the unlocking trigger mechanism of the baby stroller frame in the first embodiment of the present invention;

4 is an exploded view from the left side of the first rotating joint of the baby stroller frame in Embodiment 1 of the present invention;

5 is an exploded view from the right side of the first rotating joint of the baby stroller frame in the first embodiment of the present invention;

6 is a partial enlarged view of the first rotating joint of the baby stroller frame in the first embodiment of the present invention;

Fig. 7 is the left perspective exploded view of Fig. 6;

Fig. 8 is the right perspective exploded view of Fig. 6;

9 is a perspective view of the second pivot joint of the baby stroller frame in Embodiment 1 of the present invention;

10 is an exploded view from the left side of the second rotating joint of the baby stroller frame in Embodiment 1 of the present invention;

11 is an exploded view from the right side of the second rotating joint of the baby stroller frame in Embodiment 1 of the present invention;

12 is a partial enlarged view of the second rotating joint of the baby stroller frame in the first embodiment of the present invention;

Fig. 13 is a partial enlarged view of the rear fork member omitted in Fig. 12;

Fig. 14 is a partial enlarged view of Fig. 13 omitting the lower push rod rotating member and the lower locking member;

Fig. 15 is a partial enlarged view after omitting the front bracket rotating member in Fig. 14;

16 is a perspective view of the folded state of the baby stroller frame in the first embodiment of the present invention;

17 is a perspective view of the unfolded state of the baby stroller in the second embodiment of the present invention;

18 is a perspective view of the folded state of the baby stroller in the second embodiment of the present invention;

19 is a partial enlarged view of the baby stroller in the second embodiment of the present invention;

20 is a partial enlarged view of a rear view of the stroller in a modification of the second embodiment of the present invention;

FIG. 21 is a partial enlarged view from a top view of a baby stroller in a modification of the second embodiment of the present invention.

Reference number comparison table:

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

Upper push rod 21: inner tube 211, outer tube 212;

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

Second rotating joint 26: lower wire 261, lower locking member 262, lower push rod rotating member 263, front support rotating member 264, rear support rotating member 265, first rotating shaft 266, second rotating shaft 267, lower locking groove 268, lower Cover plate 269, return spring 2611, front fork 2641, rear fork 2651;

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

Seat frame assembly 10 : backrest rotating joint 13 , armrest bar 15 , first connecting column 123 , handle hole 1212 , second connecting column 1322 .

Detailed ways

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

It is easy to understand that, according to the technical solutions of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can replace various structural modes and implementation modes with each other. Therefore, the following specific embodiments and accompanying drawings are only exemplary descriptions of the technical solutions of the present invention, and should not be regarded as all of the present invention or as limitations or restrictions on the technical solutions of the invention.

Orientation terms such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the configurations shown in the respective drawings, which are It is a relative concept, so it may change accordingly according to its different locations and different usage states. Therefore, these and other terms of orientation should not be construed as limiting.

Example 1:

As shown in Figures 1-16, it is a schematic diagram of the structure of the baby stroller frame in the first embodiment.

As shown in FIG. 1, the baby 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. The mechanism 27 is installed on the upper push rod 21, the lower end of the upper push rod 21 and the upper end of the lower push rod 22 are connected by a first rotating joint 25, and the lower end of the lower push rod 22 passes through the upper ends of the front bracket 23 and the rear bracket 24. The second rotating joint 26 is connected, and the unlocking trigger mechanism 27 is used for triggering the unlocking of the first rotating joint 25 , and the second rotating joint 26 is unlocked after rotating the lower push rod 22 .

In this embodiment, the first rotating joint 25 is unlocked by operating the unlocking trigger mechanism 27, the upper push rod 21 is turned backward and downward to unlock the second rotating joint 26, and then the lower push rod 21 is turned forward and downward, and finally the rear bracket 24 is folded with the front bracket 23, the present invention is convenient to operate and retract the stroller, and the volume of the folded baby stroller frame can be smaller.

To unlock the trigger mechanism:

As shown in FIGS. 2-3 , the unlocking trigger mechanism 27 includes a button 271 , and the unlocking trigger mechanism 27 is used to unlock itself after pressing the button 271 , and to drive the first rotating joint 25 to unlock by rotating.

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

Further, the unlocking trigger mechanism 27 also includes an upper semicircular shell 272, a telescopic piece 273, a spring (not shown) and a lower semicircular shell 274. The upper semicircular shell 272 and the lower semicircular shell 274 are spliced into a cylindrical tube, and a part of the button 271 is inserted from the bottom. The semicircular shell 272 extends, the button 271 is installed between the lower semicircular shell 274 and the spring, the telescopic piece 273 is connected with the upper semicircular shell 272, and the two ends of the telescopic piece 273 are respectively connected with at least one upper steel wire (not shown);

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

Specifically, as shown in FIG. 3 , the button 271 is in the shape of a long bar, and the protruding strip 2713 of the button 271 is in the shape of a long bar, which is exposed to the outside of the unlocking trigger mechanism 27 and has enough area to allow four fingers to simultaneously act on the on the ridge 2713.

A part of the button 271 is installed inside the small semicircular shell 274 , and the protruding strip 2713 protrudes downward from the button hole 2741 of the lower semicircular shell 274 . Locking blocks 2711 extend outward from both ends of the button 271 , and lower inserts 2743 extend from the inner sides of both ends of the lower semicircular shell 274 . middle. When the button 271 is pressed, it will not come out of the guide groove 2742, and the button 271 and the lower semicircular shell 274 will rotate together.

As shown in FIG. 2 , a groove is formed on the upper surface of the protruding strip 2713 of the button 271 , and two spring mounting posts 2712 are installed in the groove. The spring mounting posts 2712 are used to set springs (not shown).

As shown in FIG. 3 , the surface of the spring mounting block 276 facing the button 271 is provided with two circular spring grooves 2761 . The top of the spring is inserted into the spring grooves 2761 . against. When the button 271 is pressed, the button 271 pushes the spring upward; when the button 271 is released, the button 271 returns to the original position under the action of the spring, and the protruding strip 2713 protrudes downward from the button 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 also includes two sleeves 275. The sleeves 275 are respectively fixedly connected with the two outer tubes 212. The two ends of the cylindrical tubes are respectively inserted into the two sleeves 275 and can be rotated. The locking groove 2751, the two ends of the button 271 extend out of the locking block 2711, the locking block 2711 is inserted into the locking groove 2751, when the button 271 is pressed, the locking block 2711 is released from the locking groove 2751, and the cylindrical tube can be relative to the locking groove 2751. The sleeve 275 rotates.

The lower insert piece 2743 of the lower semicircular shell 274 is inserted into the sleeve 275 , and the main body of the lower semicircular shell 274 is butted against the edge of the sleeve 275 .

Upper inserts 2722 extend outward from both ends of the upper semicircular shell 275 , and the upper inserts 2722 are also inserted into the sleeve 275 .

When the button 271 is pressed, the locking block 2711 first comes out of the locking groove 2751 , the unlocking trigger mechanism 27 unlocks itself, and then the locking block 2711 enters the guide groove 2742 . The button 271 , the upper semicircular shell 272 and the lower semicircular shell 274 can rotate relative to the sleeve 275 and the upper push rod 21 , and the telescopic member 273 does not rotate at this time.

In order to facilitate the user's operation, the upper semi-circular shell 272 and the lower semi-circular shell 274 can be rotated toward the front of the stroller to form a cylindrical tube.

Further, as shown in FIGS. 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 , and the first connecting member 2731 and the first telescopic rod 2733 One end of the second telescopic rod 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 An upper steel wire is connected, and both the first connecting piece 2731 and the second connecting piece 2732 are provided with slope bosses 2735;

The upper semicircular shell 272 has two ramp grooves 2721. The ramp bosses 2735 are embedded in the ramp grooves 2721. When the upper semicircular shell 272 rotates, the ramp grooves 2721 push the two ramp bosses 2735 to drive the first telescopic rod 2733 and the second The telescopic rods 2734 are retracted close to each other.

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

The ramp boss 2735 is generally triangular in shape and includes two inclined surfaces. The ramp groove 2721 also has two inclined surfaces, wherein the length of one inclined surface is greater than the length of the other inclined surface.

When the upper semicircular shell 272 is rotated forward, the longer slope pushes the ramp bosses 2735, so that the two ramp bosses 2735 approach each other, driving the first telescopic rod 2733 and the second telescopic rod 2734 to retract towards each other.

When the user releases the unlocking trigger mechanism 27, the first telescopic rod 2733 and the second telescopic rod 2734 extend away from each other, the ramp boss 2735 pushes the upper semicircular shell 272 to rotate in the opposite direction, and the upper semicircular shell 272 drives the lower semicircular shell 274 and the buttons 271 are reversed back together.

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

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

When it is necessary to operate the unlocking trigger mechanism 27, one hand of the user holds the upper semicircular shell 272 and the lower semicircular shell 274 and splices them into a cylindrical tube, first presses the button 271, and then rotates the upper semicircular shell 272 and the lower semicircular shell 274 to form a cylinder Tube. One-handed operation to unlock, and can be done at one time. There is no need for two hands to operate at the same time, or complex operation gestures, or two operations to complete the operation.

The first rotary joint:

As shown in FIGS. 4-8 , the first rotating joint 25 includes an upper push rod rotating casing 251 , a lower push rod rotating casing 252 and an upper locking member 253 ;

The upper push rod rotating shell 251 is connected with the lower end of the upper push rod 21, the lower push rod rotating shell 252 is connected with the upper end of the lower push rod 22, and the upper locking piece 253 is connected to the first connecting piece 2731 of the unlocking trigger mechanism 27 through the upper wire Connected to the second connecting piece 2732 , the first rotating joint 25 is unlocked when the upper wire pulls the upper locking piece 253 .

Further, as shown in FIGS. 4-8 , the first rotating joint 25 further includes a gear 254 , a first gear slot 2511 is provided in the upper push rod rotating housing 251 , and a second gear is provided in the lower push rod rotating housing 252 slot 2521,

When the first rotating joint 25 is locked, the gear 254 is embedded in 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 rotating joint 25 is unlocked.

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

The gear 254 includes a plurality of teeth. An upper locking groove 2541 is defined on the edge of the gear 254. The upper locking block 2531 of the upper locking member 253 extends downward and is inserted into the upper locking groove 2541. When the upper locking member 253 locks the gear 254 , the gear 254 cannot be rotated, and 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 be rotated and folded. .

When the upper locking member 253 is pulled upward by the upper steel wire, the upper locking block 2531 is disengaged from the upper locking groove 2541 . At this time, the reset member 258 pushes the gear 254 to move toward the first gear groove 2511 in the axial direction, and is completely embedded in the first gear groove 2511 and comes out of the second gear groove 2521. The lower push rod rotates the housing 252 and the upper push rod. The rotating casing 251 is rotatably connected only by a rotating shaft (not shown), and the lower push rod rotating casing 252 can rotate relative to the upper push rod rotating casing 251 , so that the upper push rod 21 rotates relative to the lower push rod 22 .

Further, as shown in Figures 6-7, the upper locking member 253 is installed in the connecting pipe 2513 of the upper push rod rotating housing 251, and the first gear groove 2511 is also provided with an entry groove 2512 that communicates with the connecting pipe 2513 to enter The slot 2512 corresponds to the upper locking slot 2541 in the axial direction. When locked, the upper locking block 2531 of the upper locking piece 253 is inserted into the entry slot 2512 .

Further, as shown in FIGS. 4-5 , the first rotating joint 25 further includes an upper cover plate 255 , which covers the outer side of the lower push rod rotating housing 252 and is used to block the end of the rotating shaft.

Further, as shown in FIGS. 7-8 , the first rotary joint 25 further includes a spring mounting seat 256 , a pushing spring 257 and a restoring member 258 , the pushing spring 257 is mounted on the spring mounting seat 256 , and the spring mounting seat 256 includes a The insertion arm 2561 extending from the gear 254 is provided with a slot 2543 on the gear 254 , and the insertion arm 2561 is inserted into the slot 2543 .

The reset piece 258 includes a lower wire hook 2581 and a second slope 2582. The lower wire hook 2581 is connected to one end of the lower wire for driving the lower wire. The two second slopes 2582 are located on the side of the reset member 258 facing the gear 254 . The gear 254 is provided with corresponding first slopes 2542 , and the first slopes 2542 are in contact with the second slopes 2582 .

When the upper locking member 253 is disengaged upward, the pressing spring 257 stretches and pushes the reset member 258 to move toward the gear 254 in the axial direction, and the second ramp 2582 pushes the first ramp 2542 to move in the axial direction, so that the gear 254 moves toward the first gear groove 2511 , and come out from the second gear groove 2521 to realize the unlocking of the first rotating joint 25 .

After unlocking, the upper push rod 21 drives the upper push rod to rotate the housing 251, the gear 254, the spring mounting seat 256, the pushing spring 257 and the reset piece 258 to rotate backward and downward together. Unlocking of the second rotary joint 26 .

The unlocking trigger mechanism 27 drives the first rotating joint 25 to unlock through the upper wire, and the first rotating joint 25 drives the second rotating joint 26 to unlock through the lower wire. The two-stage unlocking method 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 rotating joint 25 and the second rotating joint 26 are not unlocked at the same time, and the user must first rotate the upper push rod 21 to unlock the second rotating joint 26 and rotate the lower push rod 22 . The order of folding is unique, and it is convenient for users to operate in sequence according to the set folding order. If the first rotating joint 25 and the second rotating joint 26 are unlocked at the same time, the user may not know whether to fold the upper push rod 21 or the lower push rod 22 first.

Second rotary joint:

As shown in FIGS. 9-15 , the second rotating joint 26 includes a lower wire 261 and a lower locking member 262 . After the upper push rod 21 is rotated, the lower wire 261 pulls the lower locking member 262 to unlock the second rotating joint 26 .

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

The lower push rod rotating member 263 is connected with the lower end of the lower push rod 22, and the lower push rod rotating member 263 and the front support rotating member 264 are rotatably connected through a first rotating shaft 266;

The front support rotating member 264 is connected with the upper end of the front support 23, and the front support rotating member 264 and the rear support rotating member 265 are rotatably connected through the second rotating shaft 267;

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

A lower locking groove 268 is defined on the lower push rod rotating member 263 , the front support rotating member 264 and the rear support rotating member 265 . The lower locking member 262 is inserted into the lower locking groove 268 , and the second rotating joint 26 is locked.

Specifically, the lower push rod rotating member 263 includes two fan-shaped pieces, the front support rotating member 264 includes a circular piece, and the two lower push rod rotating members 263 clamp the front support rotating member 264 in the middle, and pass the first rotating shaft. 266 is rotatably connected to realize the relative rotation of the lower push rod 22 and the front bracket 23 .

As shown in FIGS. 14-15 , the rear support rotating member 265 is in the shape of a wrench, inserted into the front support rotating member 264 and rotatably connected through the second rotating shaft 267 to realize the relative rotation of the front support 23 and the rear support 24 .

As shown in FIGS. 10-12 , the second rotating joint 26 further includes a rear fork 2651 , and the rear fork 2651 clamps the installed lower push rod rotation member 263 , the front bracket rotation member 264 and the rear bracket rotation member 265 therein. , and is rotatably connected through the second shaft 267 .

As shown in FIGS. 10-11 , the second rotating joint 26 further includes a front fork member 2641, and the front fork member 2641 connects the installed lower push rod rotating member 263, the front support rotating member 264, the rear support rotating member 265 and the rear fork member. 2651 is clamped therein and is rotatably connected with the first rotating shaft 266 and the second rotating shaft 267 . The outer side surface of the front fork 2641 is covered with a lower cover plate 269, which plays an aesthetic role by shielding the internal installation structure.

In addition to the front fork member 2641 , the lower push rod rotating member 263 , the front support rotating member 264 , the rear support rotating member 265 and the rear fork member 2651 are all provided with lower locking grooves 268 . The lower locking groove 268 on the lower push rod rotating member 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 up along the long groove and is released from the lower locking grooves 268 of the front bracket rotating member 264, the rear bracket rotating member 265 and the rear fork member 2651 to realize the second rotating joint 26 unlocked.

As shown in FIG. 13 , the lower wire 261 is sleeved with a return spring 2611 , and when the lower wire 261 is pulled upward, the return spring 2611 is compressed. When the pulling force of the lower wire 261 is released, the return spring 2611 pushes the lower locking piece 262 downward, and the lower locking piece 262 is reinserted into the lower locking groove 268 .

The lower pivot joint 26 in this embodiment can not only realize folding and retracting, but also provide sufficient support for the front bracket 23 , the rear bracket 24 and the lower push rod 22 to increase the stability of the baby stroller frame in the unfolded state.

The folding process is as follows:

As shown in FIG. 1 , when the baby stroller frame 20 is folded, first press the button 271, and then rotate the cylindrical tube formed by the upper semicircular shell 272 and the lower semicircular shell 274 forward to unlock the first rotating joint 25;

After unlocking, flip the upper push rod 21 backwards and downwards, fold the upper push rod 21 to the rear side of the lower push rod 22, and after the upper push rod 21 is folded, unlock the second rotating joint 26;

Then turn the lower push rod 22 forward and downward, and the lower push rod 22 is turned downward together with the upper push rod 21 to be close to the front bracket 23;

Finally, lift the baby stroller frame 20, the rear bracket 24 and the front bracket 23 will naturally move closer under the action of gravity, and the entire baby stroller frame 20 can be retracted.

By implementing this embodiment, the rapid folding of the stroller frame can be facilitated, and the folded volume is smaller. Since the upper push rod 21 and the lower push rod 22 divide the push rod into two sections, the folded volume can be reduced, which is convenient for storage. In addition, the unlocking of the second rotating joint 26 is realized by the folding of the upper push rod 21 , which facilitates the step-by-step operation during folding, and is simple and easy to understand.

Embodiment 2:

As shown in Figures 17-19, the stroller includes a seat frame assembly 10, and also includes a stroller frame 20 on which the seat frame assembly 10 is mounted.

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

Further, as shown in FIG. 17 , the baby stroller frame 20 further includes a first connecting rod 28 , one end of the first connecting rod 28 is rotatably connected with the lower push rod 22 , and the other end is rotatably connected with the backrest of the seat frame assembly 10 . 13 Connections.

Further, as shown in FIG. 19 , the baby 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 with the other end of the first connecting rod 28, and the second The other end of the connecting rod 29a is rotatably connected with one end of the third connecting rod 29b, and the other end of the third connecting rod 29b is fixedly connected with the armrest bar 15 of the seat frame assembly 10 .

The first connecting rod 28 , the second connecting rod 29 a and the third connecting rod 29 b serve to support and connect the seat frame assembly 10 . As shown in FIG. 17, when the stroller is unfolded, the seat frame assembly 10 can be held in a stable state. As shown in FIG. 18 , when the stroller is folded, the seat frame assembly 10 can be received in the stroller frame 20 .

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 usage requirements.

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

As shown in FIGS. 20-21 , which is a modification of the second embodiment, the seat frame assembly 10 may 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 connected to the The lower push rod 22 is rotatably connected, and the other end is connected with the backrest pivot joint 13 of the seat frame assembly 10; the front bracket 23 is connected with the seat frame assembly 10 through the first connecting column 123; the rear bracket 24 is connected with the seat frame assembly 10 through The second connecting post connects 1322.

When the baby stroller frame 20 is unfolded, the first connecting column 123 , the second connecting column 1322 and the connecting rod 25 play the role of three-point positioning for the seat frame assembly 10 . The relative positions of other components remain unchanged.

When the stroller frame 20 is folded, the connection points of the first connecting post 123, the second connecting post 1322 and the first connecting rod 28 are rotated, and the seat frame assembly 10 is relative to the upper push rod 21, the lower push rod 22, the front The bracket 22 and the rear bracket 23 are rotated.

By implementing this embodiment, the baby stroller can be quickly and conveniently folded. In addition, the seat frame assembly 10 and the baby stroller frame 20 can be folded and retracted independently, which increases the flexibility of adjustment and meets the different needs of users.

Embodiment three:

The folding method of the stroller frame includes the following steps:

Operate the unlocking trigger mechanism 27 to unlock the first rotating joint 25;

Further, when the unlocking trigger mechanism 27 is operated,

First press the button 271 of the unlocking trigger mechanism 27;

The unlocking trigger mechanism 27 is then rotated forward.

Turn the upper push rod 21 backward and downward to approach the lower push rod 22;

The second rotating joint 26 is unlocked, and the lower push rod 22 is turned forward and downward to approach the front bracket 23;

When the baby stroller frame 20 is lifted, the front bracket 23 and the rear bracket 24 will naturally move toward each other under the action of gravity.

By implementing this embodiment, the convenient and fast folding of the stroller frame can be realized.

Embodiment 4:

The method of folding a stroller includes the following steps:

folding seat frame assembly 10;

Operate the unlocking trigger mechanism 27 to unlock the first rotating joint 25;

Further, when the unlocking trigger mechanism 27 is operated,

First press the button 271 of the unlocking trigger mechanism 27;

The unlocking trigger mechanism 27 is then rotated forward.

Turn the upper push rod 21 backward and downward to approach the lower push rod 22;

The second rotating joint 26 is unlocked, and the lower push rod 22 is turned forward and downward to approach the front bracket 23;

Lift the handle hole 1212 on the seat frame assembly 10 (see FIG. 18 ), and the front bracket 23 and the rear bracket 24 are naturally folded under the action of gravity.

By implementing this embodiment, the convenient and fast folding of the baby stroller can be realized.

What has been described above is only the principles and preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, on the basis of the principle of the present invention, several other modifications can also be made, which should also be regarded as the protection scope of the present invention.

Claims (16)

1. A baby stroller frame, characterized in that it 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, and the unlocking trigger mechanism is installed in the On the upper push rod, the lower end of the upper push rod and the upper end of the lower push rod are connected by the first rotating joint, and the lower end of the lower push rod is connected to the front bracket and the rear bracket. The upper end is connected by the second rotating joint, and the unlocking trigger mechanism is used to trigger the first rotating joint to be unlocked, and the second rotating joint is triggered to unlock after rotating the push-down rod. 2 . The stroller frame according to claim 1 , wherein the unlocking trigger mechanism comprises a button, and the unlocking trigger mechanism is used to unlock itself after pressing the button, and drive the first rotation joint by rotating. 3 . Unlock. 3 . The stroller frame according to claim 2 , wherein the unlocking trigger mechanism further comprises an upper semicircular shell, a telescopic piece, a spring and a lower semicircular shell, and the upper semicircular shell and the lower semicircular shell are spliced together. 4 . into a cylindrical tube, a part of the button protrudes from the lower semicircular shell, the button is installed between the lower semicircular shell and the spring, the telescopic piece is connected with the upper semicircular shell, the telescopic Both ends of the piece are respectively connected with upper steel wires; After the button is pressed, the unlocking trigger mechanism is unlocked, the button, the upper semicircular shell and the lower semicircular shell rotate to compress the telescopic piece, and the telescopic piece pulls the upper steel wire to drive the The first rotary joint is unlocked. 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; The unlocking trigger mechanism further comprises a sleeve, the sleeve is fixedly connected with the outer pipe, the two ends of the cylindrical pipe are respectively inserted into the sleeve and can be rotated, and the sleeve is provided with a lock The two ends of the button extend out of the locking block, the locking block is inserted into the locking groove, when the button is pressed, the locking block comes out of the locking groove, the The cylindrical tube is rotatable relative to the sleeve. 5. The stroller frame of 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 being connected to One end of the first telescopic rod is connected, the second connecting piece 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 The first connecting piece and the second connecting piece are respectively connected with one of the upper steel wires, and both the first connecting piece and the second connecting piece are provided with slope bosses; The upper semicircular shell is provided with two ramp grooves, and the ramp bosses are embedded in the ramp grooves. When the upper semicircular shell rotates, the ramp grooves push the two ramp bosses to drive the first ramp. A telescopic rod and the second telescopic rod are retracted close to each other. 6 . The stroller frame of claim 1 , wherein the first rotating joint comprises an upper push rod rotating casing, a lower push rod rotating casing and an upper locking member; 7 . 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, and the upper locking piece is connected to the unlocking trigger mechanism through the upper steel wire When the upper wire pulls the upper locking member, the first rotating joint is unlocked. 7 . The baby stroller frame according to claim 6 , wherein the first rotating joint further comprises a gear, the upper push rod rotating housing is provided with a first gear slot, and the lower push rod rotating housing There is a second gear slot in the When the first rotating joint is locked, the gear is embedded in the first gear slot and the second gear slot; When the upper locking member moves upward, the gear is disengaged from the first gear slot or the second gear slot, and the first rotating joint is unlocked. 8 . The baby stroller frame according to claim 1 , wherein the second rotating joint comprises a lower wire and a lower locking member, and after the upper push rod is rotated, the lower wire pulls the lower locking member. 9 . to unlock the second pivot joint. 9 . The baby stroller frame according to claim 8 , wherein the second rotating joint comprises a lower push rod rotating member, a front support rotating member and a rear support rotating member; 10 . The lower push rod rotating member is connected with the lower end of the lower push rod, and the lower push rod rotating member and the front support rotating member are rotatably connected through a first rotating shaft; The front support rotating member is connected with the upper end of the front support, and the front support rotating member and the rear support rotating member are rotatably connected through a second rotating shaft; the rear bracket rotating member is connected with the upper end of the rear bracket; A lower locking groove is formed on the lower push rod rotating member, the front support rotating member and the rear support rotating member, the lower locking member is inserted into the lower locking groove, and the second rotating joint is locked . 10. A baby stroller, comprising a seat frame assembly, further comprising the baby stroller frame of any one of claims 1-9, the seat frame assembly being mounted on the baby stroller frame superior. 11. The stroller of claim 10, wherein the stroller frame further comprises a first connecting rod, one end of the first connecting rod is rotatably connected to the lower push rod, and the other end is rotatably connected to the lower push rod. connected with the seat frame assembly. 12. The stroller of claim 11, wherein the seat frame assembly comprises a first connecting post and a second connecting post, the front bracket and the seat frame assembly passing through the first connecting post A connecting column is connected, and the rear bracket is connected with the seat frame assembly through the second connecting column. 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 being connected to 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. 14. A baby stroller frame folding method for the baby stroller frame according to any one of claims 1-9, characterized in that, comprising the steps of: operating the unlocking trigger mechanism to unlock the first rotating joint; Turn the upper push rod backward and downward to be close to the lower push rod; The second rotating joint is unlocked, and the lower push rod is turned forward and downward to approach the front bracket; Lift the baby stroller frame, and the front support and the back support will naturally move closer to each other under the action of gravity. 15. The method for folding a stroller frame according to claim 14, wherein the step of operating the unlocking trigger mechanism to unlock the first rotating joint further comprises: pressing the button of the unlocking trigger mechanism; Rotate the unlock trigger mechanism forward. 16. A stroller folding method for the stroller according to any one of claims 10-13, characterized in that, comprising the steps of: folding the seat frame assembly; operating the unlocking trigger mechanism to unlock the first rotating joint; Turn the upper push rod backward and downward to be close to the lower push rod; The second rotating joint is unlocked, and the lower push rod is turned forward and downward to approach the front bracket; Lift the handle hole on the seat frame assembly, and the front bracket and the rear bracket are folded.

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