CN110667682A - Baby stroller and method of folding the same - Google Patents

Abstract

The invention discloses a baby stroller, comprising a seat frame assembly and a baby stroller frame. The seat frame assembly includes a first back, a second back, a seat, and a switch unit, which connects the first back and all The upper pivot joint between the second back and the lower pivot joint connected between the second back and the seat part, the switch unit is installed on the beam between the first back and the second back On the upper side, the beam is connected with the upper pivot joint, and the switch unit can unlock the upper pivot joint and the lower pivot joint. The invention also discloses a folding method of the baby stroller frame. In the present invention, after the upper rotating joint and the lower rotating joint are unlocked, the first back and the second back are rotated and folded relative to the seat part, so as to realize the operation of independent folding and folding of the seat frame assembly, and can be folded independently relative to the baby stroller frame Or unfolded for easy adjustment and suitable for different usage states and needs.

Description

Baby stroller and method of folding the same

technical field

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

Background technique

The retracting method of the existing baby stroller frame is complicated, and it is not easy for the user to operate.

In addition, the existing baby stroller frame is not provided with a seat frame assembly that can be folded and folded independently. When the baby stroller is retracted, the seat frame is folded and folded together, the seat frame cannot be adjusted independently, and the flexibility is poor.

Therefore, it is necessary to devise a baby stroller and a folding method of the seat frame assembly which is convenient to operate and retract, and can be independently folded, folded and adjusted.

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 and a baby stroller folding method with a seat frame assembly that is convenient to operate and retract, and can be independently folded, folded, and adjusted.

The present invention provides a baby stroller, comprising a seat frame assembly and a baby stroller frame, the seat frame assembly including a first back, a second back, a seat, and a switch unit, connecting the first back and the The upper pivot joint between the second back and the lower pivot joint connected between the second back and the seat part, the switch unit is mounted on the beam between the first back and the second back , the beam is connected with the upper pivot joint, and the switch unit can unlock the upper pivot joint and the lower pivot joint.

further,

When folded, after the switch unit is operated, the switch unit drives the upper pivot joint and the lower pivot joint to unlock, so that the first back can be rotated and folded relative to the second back, and the second The back can be rotatably folded relative to the seat part;

When unfolding, the first back is rotated, and after the first back is rotated and unfolded relative to the second back, the upper pivot joint locks the first back, and the second back is relative to the seat After the back portion is rotated and deployed in place, the lower pivot joint locks the second back portion.

Further, the switch unit includes a turning piece, a return spring and a steel wire, the turning piece is rotatably connected to the beam, the restoring spring is installed between the turning piece and the beam, and one end of the steel wire is is connected with the turning piece, and the other end is connected with the upper rotating joint and the lower rotating joint;

When the turning member is rotated, the turning member pulls the steel wire, and the steel wire drives the upper rotating joint and the lower rotating joint to unlock.

Further, the lower rotating joint includes a first casing, a second casing, a rotating shaft, a locking pin and a locking groove;

The first casing is connected to the second back, the second casing is connected to the seat portion, the rotating shaft is connected to the first casing and the second casing, and the first casing is connected to the second casing. The housing is rotatable about the rotation axis, the locking pin is connected to the switch unit and is installed between the first housing and the second housing, and the locking groove is formed in the second housing on the body;

When locked, the locking pin is inserted into the locking groove;

When unlocking, the switch unit drives the locking pin to escape from the locking groove.

Further, the lower rotating joint also includes a sliding groove shell, a sliding member and a claw plate, the sliding groove shell is connected between the second back and the second shell, and the sliding groove shell is connected to the The switch unit is connected, one end of the locking pin is fixed on the sliding member, and the other end passes through the limiting groove of the sliding groove shell and can slide along the sliding groove shell, and the claw plate is installed On the second casing, a plurality of card grooves on the claw plate correspond to the locking grooves, and the other end of the locking pin passes through the sliding groove shell and is inserted into the card groove and the locking groove. into the locking slot described above.

Further, the upper rotating joint includes a first rotating member, a second rotating member and a cam, the first rotating member is connected with the first back, and the second rotating member is connected with the second back, so the first rotating member is rotatably connected with the second rotating member;

When the upper rotating joint is locked, the cam is located between the first rotating member and the second rotating member along the axis direction;

The switch unit can drive the cam to disengage from the first rotating member or the second rotating member along the axis direction, and the upper rotating joint is unlocked.

Further, the baby stroller frame 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 upper push rod. Above, 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 The second rotating joint is connected, and the unlocking trigger mechanism is used for triggering the unlocking of the first rotating joint, 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;

The unlocking trigger mechanism further comprises 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 sticks out from the lower semicircular shell, The button is installed between the lower semicircular shell and the spring, the telescopic piece is connected to 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 connection, the first rotating joint is unlocked when the upper steel wire pulls the upper locking member;

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;

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 folding method for any one of the above-mentioned baby strollers, comprising the following steps:

operating the switch unit to unlock the upper pivot joint and the lower pivot joint;

Turn the first back forward and downward so that the first back is close to the second back;

Turn the second back forward and downward so that the second back is close to the seat portion;

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:

In the present invention, after the upper rotating joint and the lower rotating joint are unlocked, the first back and the second back are rotated and folded relative to the seat part, so as to realize the operation of independent folding and folding of the seat frame assembly, and can be folded independently relative to the baby stroller frame Or unfolded for easy adjustment and suitable for different usage states and needs.

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:

1 is a perspective view of a baby stroller in Embodiment 1 of the present invention;

2 is a partial enlarged view of the baby stroller in the first embodiment of the present invention;

3 is a perspective view of the seat frame assembly in Embodiment 1 of the present invention;

4 is a partial enlarged view of the switch unit of the seat frame assembly in the first embodiment of the present invention;

FIG. 5 is a perspective view of a turning member of the switch unit of the seat frame assembly in the first embodiment of the present invention;

6 is a perspective view of the switch unit of the seat frame assembly in Embodiment 1 of the present invention after omitting the flipping member;

7 is a partial enlarged view of the lower pivot joint of the seat frame assembly in the first embodiment of the present invention;

8 is an exploded view of the lower pivot joint of the seat frame assembly in the first embodiment of the present invention;

FIG. 9 is a schematic structural diagram of the lower pivot joint of the seat frame assembly in a modification of the first embodiment of the present invention;

10 is an exploded view of a side surface at the lower pivot joint of the seat frame assembly in a modification of the first embodiment of the present invention;

Fig. 11 is an exploded view of the other side of the lower pivot joint of the seat frame assembly in the modification of the first embodiment of the present invention;

12 is a partial enlarged view of the seat portion of the seat frame assembly in the modification of the first embodiment of the present invention;

13 is an exploded view of one side of the upper pivot joint of the seat frame assembly in the first embodiment of the present invention;

14 is an exploded view of the other side of the upper pivot joint of the seat frame assembly in the first embodiment of the present invention;

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

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

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

18 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;

19 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;

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

Fig. 21 is the left perspective exploded view of Fig. 20;

Fig. 22 is the right perspective exploded view of Fig. 20;

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

FIG. 24 is an exploded view from the left side of the second rotating joint of the baby stroller frame in the first embodiment of the present invention;

FIG. 25 is an exploded view from the right side of the second rotating joint of the baby stroller frame in the first embodiment of the present invention;

Fig. 26 is a partial enlarged view of the second rotating joint of the baby stroller frame in the first embodiment of the present invention;

Fig. 27 is a partial enlarged view of the rear fork member omitted in Fig. 26;

Fig. 28 is a partial enlarged view of Fig. 27 omitting the lower push rod rotating member and the lower locking member;

Fig. 29 is a partial enlarged view of Fig. 28 after omitting the front support rotating member;

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

31 is a perspective view of the unfolded state of the baby stroller in the first embodiment of the present invention;

32 is a perspective view of the folded state of the stroller in the first embodiment of the present invention;

Figure 33 is a partial enlarged view of the baby stroller in the first embodiment of the present invention;

Fig. 34 is a partial enlarged view of the rear view of the stroller in the modification of the first embodiment of the present invention;

Fig. 35 is a partial enlarged view of the top view of the stroller in the modification of the first embodiment of the present invention;

36 is a flow chart of a method for folding a baby stroller in the second embodiment of the present invention.

Reference number comparison table:

Seat Frame Assembly 10:

The first back 11: the second through hole 111;

Seat part 12: seat plate 121, extension rod 122, first connecting column 123, shielding plate 124, installation groove 125, embedded groove 1211, handle hole 1212;

Lower rotating joint 13: first casing 131, second casing 132, rotating shaft 133, locking pin 134, locking groove 135, sliding groove shell 136, sliding piece 137, claw plate 138, cross bar 139, guide groove 1321 , the second connecting column 1322, the limit slot 1361, the third wire hole 1362, the second wire hole 1371, the pin hole 1372, the limit block 1373, the card slot 1381;

The switch unit 14: the turning element 141, the return spring 142, the steel wire 143, the first steel wire hole 1411, the first hinge part 1412, the first steel wire 143a, the second steel wire 143b;

Handrail 15;

Cross beam 16: second hinge part 161;

Ceiling unit 17: ceiling rod 171, ceiling rotating member 172, roof cloth 173;

second back 18;

Upper rotating joint 19: first rotating member 191, second rotating member 192, cam 193, cam groove 1921, sliding shaft 1922, fourth wire hole 1931;

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.

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.

The "front", "rear", "up", "down", "left" and "right" directions in the present invention are based on the orientation of the stroller.

Example 1:

Referring to Figures 1-2, it is a schematic structural diagram of a baby stroller frame in Embodiment 1 of the present invention.

The stroller includes a stroller frame 20, which includes a push rod 21, a front bracket 22, a rear bracket 23, wheels 24, and a grab bar 15, and a seat frame assembly 10, which is mounted on the on the stroller frame 20.

The baby stroller frame 20 further includes a frame rotation joint 26, and the front bracket 22, the rear bracket 23 and the push rod 21 are connected through the frame rotation joint 26, and can be rotated and folded. The folding operations of the stroller frame 20 and the seat frame assembly 10 are two completely independent modes of operation.

When the entire stroller needs to be folded, the seat frame assembly 10 is folded first, and then the stroller frame 20 is folded.

Further, as shown in Figures 1-2, the front bracket 22 is rotatably connected to the seat portion 12, the lower pivot joint 13 and the push rod 21 are rotatably connected through the first connecting rod 25, and the armrest 15 and the seat portion 12 are rotatably connected. In the rotational connection, the handrail 15 extends out of the second connecting rod 28 , and the second connecting rod 28 is rotatably connected with the first connecting rod 25 through the third connecting rod 29 .

Specifically, as shown in FIG. 2 , the seat portion 12 is provided with a first connecting column 123 , and the front bracket 22 is rotatably connected to the seat plate 121 through the first connecting column 123 .

The seat frame assembly 10 is positioned at three points through the first connecting post 123 , the connecting point between the armrest bar 15 and the seat portion 12 , the third connecting rod 29 and the connecting point between the first connecting rod 25 and the lower pivot joint 13 . .

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

Seat Frame Assembly:

As shown in Figures 3-14, it is a schematic structural diagram of the seat frame assembly in the first embodiment of the present invention.

A seat frame assembly 10 for a stroller, comprising a first back 11, a second back 18, a seat portion 12, a switch unit 14, an upper pivot joint 19 connecting the first back 11 and the second back 18, and The lower rotary joint 13 connected between the second back 18 and the seat portion 12, the switch unit 14 is mounted on the beam 16 between the first back 11 and the second back 18, the beam 16 is connected with the upper rotary joint 19, the switch unit 14 can unlock the upper pivot joint 19 and the lower pivot joint 13 .

When folded, after the switch unit 14 is operated, the switch unit 14 drives the upper pivot joint 19 and the lower pivot joint 13 to unlock, so that the first back 11 can be rotated and folded relative to the second back 18 , and the second back 18 can be relative to the seat portion 12 . turn to close;

When unfolding, rotate the first back 11. After the first back 11 is rotated and unfolded relative to the second back 18, the upper pivot joint 19 locks the first back 11. After the second back 18 is rotated and unfolded relative to the seat portion 12, the lower The pivot joint 13 locks the second back 18 .

When it needs to be folded, the switch unit 14 is operated, and the switch unit 14 drives the upper rotating joint 19 and the lower rotating joint 13 to unlock;

Then, turn the first back 11 toward the direction close to the second back 18 until the first back 11 is rotated and is almost parallel to the second back 18;

Then, the first back 11 and the second back 18 are rotated together toward the direction close to the seat portion 12 until the first back 11 and the second back 18 are rotated to a horizontal position similar to the seat portion 12 .

When the seat frame assembly 10 needs to be unfolded again, first turn the first back 11 and the second back 18 away from the seat portion 12 until the proper unfolding angle is adjusted, and the lower turning joint 13 is locked again; A back 11 is turned upward relative to the second back 18 until the first back 11 and the second back 18 are on the same line, and the upper rotating joint 19 is locked again.

In this embodiment, after the upper rotating joint 19 and the lower rotating joint 13 are unlocked, the first back 11 and the second back 18 are rotated and folded relative to the seat portion 12 to realize the independent folding and folding operation of the seat frame assembly. The cart frame can be folded or unfolded separately for easy adjustment and is suitable for different usage states and needs.

Wherein, as shown in FIG. 3 , the first back portion 11 includes a hollow U-shaped rod, and two ends of the U-shaped rod are connected with two upper rotating joints 19 .

Specifically, the first back 11 is a complete U-shaped rod, the U-shaped rod is installed upside down when unfolded, and the two ends are respectively connected with the upper rotating joint 19 .

When the stroller is actually in use, the U-shaped bar jacket is provided with a back cloth, or back plate, to support the baby's back.

Optionally, the first back 11 can also be of other structures, for example, a U-shaped bar is replaced by a backboard, which can support the baby's head.

Further, as shown in FIG. 3 , the second back 18 is two straight rods, which are respectively connected to both ends of the U-shaped first back 11 . The first back 11 and the second back 18 are connected by an upper pivot joint 19 , the two upper pivot joints 19 are connected by a beam 16 , and the switch unit 14 is mounted on the beam 16 .

Further, as shown in FIGS. 4-6 , the switch unit 14 includes a turning member 141, a return spring 142 and a steel wire 143, the turning member 141 is rotatably connected to the beam 16, and the restoring spring 142 is installed between the turning member 141 and the beam 16, One end of the steel wire 143 is connected with the turning piece 141, and the other end is connected with the upper rotating joint 19 and the lower rotating joint 13;

When the turning member 141 is rotated, the turning member 141 pulls the wire 143, and the wire 143 drives the upper rotating joint 19 and the lower rotating joint 13 to unlock.

Specifically, as shown in FIGS. 5-6 , the turning member 141 includes a first wire hole 1411 and a first hinge portion 1412 , the first wire hole 1411 is fixedly connected to one end of the wire 143 , and the first hinge portion 1412 is connected to the first hinge portion 1412 on the beam 16 . The two hinge parts 161 are rotatably connected. One end of the return spring 142 is connected to the turning member 141 , and the other end is connected to the beam 16 .

When the flipping member 141 is flipped toward the rear of the seat frame assembly 10, the flipping member 141 rotates around the first hinge portion 1412 and pulls the wire 143, and the wire 143 drives the upper rotating joint 19 and the lower rotating joint 13 to unlock. When the flipping member 141 is flipped over , stretch the return spring 142 . When the flipping member 141 is released, the return spring 142 drives the flipping member 141 to return to the initial position.

Further, as shown in FIG. 6 , the steel wire 143 includes a first steel wire 143 a and a second steel wire 143 b , the first steel wire 143 a is connected to the upper rotating joint 19 , and the second steel wire 143 b is connected to the lower rotating joint 13 .

There are two first wire holes 1411 of the turning member 141, each of which is connected to a general wire 143, and a general wire 143 is divided into two strands, which are the first wire 143a and the second wire 143b respectively. The first wire 143a and the The upper rotating joint 19 is connected, and the second wire 143b is connected with the lower rotating joint 13 . When the turning member 141 is turned over, it can simultaneously drive the upper rotating joint 19 and the lower rotating joint 13 to unlock.

Optionally, there may be only one steel wire 143, and the first steel wire holes 1411 of the flipping member 141 are respectively connected with a steel wire 143, and each steel wire 143 simultaneously drives the upper rotating joint 19 and the lower rotating joint 13 to unlock.

Further, as shown in FIG. 3 and FIGS. 7-8 , the lower rotating joint 13 includes a first casing 131 , a second casing 132 , a rotating shaft 133 , a locking pin 134 and a locking groove 135 ;

The first casing 131 is connected to the second back 18 , the second casing 132 is connected to the seat portion 12 , the rotating shaft 133 is connected to the first casing 131 and the second casing 132 , and the first casing 131 can rotate around the rotating shaft 133 , the locking pin 134 is connected with the switch unit 14 and is installed between the first casing 131 and the second casing 132, and the locking groove 135 is formed on the second casing 132;

When locked, the locking pin 134 is inserted into the locking groove 135;

When unlocking, the switch unit 14 drives the locking pin 134 out of the locking groove 135 .

Specifically, as shown in FIG. 2 , the first casing 131 and the second casing 132 are both disc-shaped, and the first casing 131 and the second casing 132 form an installation cavity after being fastened together. The locking pin 134 and the locking The grooves 135 are all installed in the installation cavity.

There are two lower pivot joints 13, which are located on the left and right sides of the second back 18 and the seat portion 12 respectively. The back 18 and the switch unit 14 become a whole and rotate together.

The two second shells 132 are integrally connected with the seat portion 12 . During actual processing, the second shells 132 and the seat plate 121 of the seat portion 12 can be integrally injection-molded.

A plurality of hollows are formed on the seat plate 121 , and the seat plate 121 can be covered with a seat pad to increase comfort. The hollow part can increase the air permeability of the seat plate 121, and can also reduce the weight and cost. It also provides sufficient support and stability.

The locking grooves 135 include three, which are distributed around the center of the second housing 132 with equal radii. The plurality of locking grooves 135 are convenient for adjusting the angle between the second back 18 and the seat portion 12 , and the locking pin 134 can be snapped into any one of the locking grooves 135 to meet different needs of users. The user can adjust the second back 18 and the first back 11 to a lying state, a semi-lying state, and a sitting state.

Further, as shown in FIGS. 7-8 , the lower rotating joint 13 further includes a sliding groove shell 136 , a sliding member 137 and a claw plate 138 , and the sliding groove shell 136 is connected between the second back 18 and the second shell 132 , The sliding groove shell 136 includes a third wire hole 1362 , and the other end of the second wire 143b is fixedly connected to the third wire hole 1362 . The third steel wire hole 1362 of the sliding groove shell 136 is connected to the switch unit 14 through the second steel wire 143b, one end of the locking pin 134 is fixed on the sliding member 137, and the other end passes through the limit groove 1361 of the sliding groove shell 136 and can slide along the The groove shell 136 slides, the claw plate 138 is installed on the second housing 132 , the claw plate 138 is provided with three clamping grooves 1381 that completely match the shape of the locking groove 135 , and a plurality of clamping grooves 1381 on the claw plate 138 Corresponding to the locking groove 135 , the other end of the locking pin 134 is inserted into the locking groove 1381 and the locking groove 135 after passing through the sliding groove shell 136 .

Specifically, the sliding groove shell 136 is fixedly connected to the lower end of the second back 18 , a semicircular groove is formed on the sliding groove shell 136 , the sliding member 137 is oval, and the sliding member 137 is at least partially inserted into the sliding groove shell 136 .

When the second wire 143b is pulled, it drives the sliding groove shell 136 to move upward.

When the sliding groove shell 136 is pulled upward, the locking pin 134 is driven to slide upward, the locking pin 134 drives the sliding member 137 to slide upward, and the locking pin 134 comes out of the locking groove 135 to realize the unlocking of the lower rotating joint 13 .

The claw plate 138 is connected with the second housing 132 by screws.

The sliding groove shell 136 is also connected with a reset member. When the user releases the flipping member 141 , the reset member moves the sliding groove shell 136 downward, keeping the locking pin 134 locked into the locking groove 1381 and the locking groove 135 . The return member may be a return spring.

In this embodiment, the sliding member 137 , the sliding groove shell 136 , and the locking pin 134 are integrally connected with the first housing 131 , and the claw plate 138 and the locking groove 135 are integrally connected with the second housing 132 . The two parts are locked through the cooperation of the locking pin 134 with the locking groove 135 and the locking groove 1381 . When the locking pin 134 is disengaged from the locking groove 135 and the locking groove 1381 , the unlocking is realized, and the second back 18 can be rotated relative to the seat portion 12 . , the angle of the second back 18 can be adjusted or fully folded.

Optionally, as shown in FIGS. 9-11 , it is a schematic structural diagram of the lower rotating joint 13 in the modification.

The lower rotating joint 13 includes a first casing 131, a second casing 132, a rotating shaft 133, a locking pin 134 and a locking groove 135;

The first casing 131 is connected to the second back 18 , the second casing 132 is connected to the seat portion 12 , the rotating shaft 133 is connected to the first casing 131 and the second casing 132 , and the first casing 131 can rotate around the rotating shaft 133 , the locking pin 134 is connected with the switch unit 14 and is installed between the first casing 131 and the second casing 132, and the locking groove 135 is formed on the second casing 132;

When locked, the locking pin 134 is inserted into the locking groove 135;

When unlocking, the switch unit 14 drives the locking pin 134 out of the locking groove 135 .

Specifically, as shown in FIG. 3 and FIG. 9 , the first housing 131 and the second housing 132 are both disc-shaped, and the first housing 131 and the second housing 132 form an installation cavity after being buckled, and the locking pin Both 134 and locking slot 135 are installed in the mounting cavity.

There are two lower pivot joints 13, which are located on the left and right sides of the second back 18 and the seat portion 12 respectively. The back 18 and the switch unit 14 become a whole and rotate together.

The two second shells 132 are integrally connected with the seat portion 12 . During actual processing, the second shells 132 and the seat plate 121 of the seat portion 12 can be integrally injection-molded.

A plurality of hollows are formed on the seat plate 121 , and the seat plate 121 can be covered with a seat pad to increase comfort. The hollow part can increase the air permeability of the seat plate 121, and can also reduce the weight and cost. It also provides sufficient support and stability.

As shown in FIG. 10 , the locking grooves 135 include four, which are distributed with equal radii around the center of the second housing 132 . The plurality of locking grooves 135 are convenient for adjusting the angle between the second back 18 and the seat portion 12 , and the locking pin 134 can be snapped into any one of the locking grooves 135 to meet different needs of users. The user can adjust the second back 18 to a lying state, a semi-lying state, and a sitting state.

Further, as shown in FIGS. 9-11 , the lower rotary joint 13 further includes a sliding groove shell 136 , a sliding member 137 and a claw plate 138 , and the sliding groove shell 136 is connected between the second back 18 and the second shell 132 , The sliding member 137 is connected to the switch unit 14 and can slide along the sliding groove shell 136 , the claw plate 138 is mounted on the second housing 132 , the plurality of clamping grooves 1381 on the claw plate 138 correspond to the locking grooves 135 , and the locking pin 134 One end is installed on the slider 137 , and the other end is inserted into the card slot 1381 and the locking slot 135 .

Specifically, the sliding groove shell 136 is fixedly connected to the end of the U-shaped rod. A semicircular groove is formed on the sliding groove shell 136 .

The sliding member 137 includes a second wire hole 1371 , and the other end of the second wire 143b is fixedly connected to the second wire hole 1371 . When the second wire 143b is pulled, the sliding member 137 is driven to slide upward.

The sliding member 137 also includes a pin hole 1372, and the locking pin 134 is inserted into the pin hole 1372 and is fixedly connected. When the sliding member 137 slides upward, it drives the locking pin 134 to slide upward together, and the locking pin 134 is released from the locking groove 135 to realize downward rotation. Unlocking of joint 13.

The claw plate 138 is provided with four clamping grooves 1381 that completely match the shape of the locking groove 135 , and the claw plate 138 is connected to the second housing 132 by screws.

As shown in FIG. 11 , the sliding member 137 further includes a limiting block 1373 , and a limiting groove 1361 is defined on the sliding groove shell 136 . When the sliding member 137 slides upward, the limiting groove 1361 plays a limiting role.

The sliding member 137 is also connected with a restoring member. When the user releases the flipping member 141 , the restoring member makes the sliding member 137 slide down along the sliding groove shell 136 , keeping the locking pin 134 locked into the locking groove 1381 and the locking groove 135 . The return member may be a return spring.

In the modified example, the sliding member 137 , the sliding groove shell 136 , and the locking pin 134 are integrally connected with the first housing 131 , and the claw plate 138 , the locking groove 135 and the second housing 132 are integrally connected. The two parts are locked through the cooperation of the locking pin 134 , the locking groove 135 and the card groove 1381 . When the locking pin 134 comes out of the locking groove 135 and the card groove 1381 , the unlocking is realized, and the second back 18 can rotate relative to the seat portion 12 . , the angle of the second back 18 can be adjusted or fully folded.

Further, as shown in FIG. 12 , the seat portion 12 includes a seat plate 121 and an extension rod 122 . The seat plate 121 is provided with an embedding groove 1211 , and the corresponding extension rod 122 is provided with an embedding block (not shown), and the embedding block is embedded in the into the embedding groove 1211 to realize the connection between the extension rod 122 and the seat plate 121 .

Optionally, the extension rod 122 can adjust the angle relative to the seat plate 121; when the baby is sitting, the extension rod 122 is turned downward, so that the baby's calf can naturally bend downward; when the baby is lying down, the extension rod 122 is turned upward , which is kept on the same plane as the seat plate 121 for supporting the legs and feet of the baby.

Further, as shown in Figures 13-14, the upper rotating joint 19 includes a first rotating member 191, a second rotating member 192 and a cam 193, the first rotating member 191 is connected with the first back 11, and the second rotating member 192 is connected with the first rotating member 192. The two backs 18 are connected, and the first rotating member 191 and the second rotating member 192 are rotatably connected;

When the upper rotating joint 19 is locked, the cam 193 is located between the first rotating member 191 and the second rotating member 192 along the axis direction;

The switch unit 14 can drive the cam 193 to disengage from the first rotating member 191 or the second rotating member 192 along the axis direction, and the upper rotating joint 19 is unlocked.

Specifically, as shown in FIG. 13 , the cam 193 includes a fourth wire hole 1931, and the fourth wire hole 1931 is connected to the first wire 143a. The second rotating member 192 is provided with a cam groove 1921. The cam 193 is at least partially embedded in the cam groove 1921. The second rotating member 192 further includes a sliding shaft 1922. The cam 193 is sleeved on the sliding shaft 1922 and can slide along the sliding shaft 1922. Shaft 1922 moves axially. The first rotating member 191 is rotatably connected with the sliding shaft 1922 , and the cam 193 can at least partially be embedded in the first rotating member 191 .

In the locked state, a part of the cam 193 is embedded in the cam groove 1921 of the second rotating member 192 , and the other part is embedded in the first rotating member 191 to lock the first rotating member 191 and the second rotating member 192 . At this time, the first back 11 and the second back 18 are locked.

When the turning member 141 is turned over, the first wire 143a pulls the cam 193 so that the cam 193 completely enters the cam groove 1921 and is disengaged from the first rotating member 191 . The first rotating member 191 can rotate relative to the second rotating member 192 to realize the rotation of the first back portion 11 relative to the second back portion 18 .

A reset member can be installed between the cam 193 and the cam groove 1921, and when the cam 193 is pulled toward the cam groove 1921, the reset member is compressed. When the first wire 143a does not exert force on the cam 193, the cam 193 moves away from the second rotating member 192 again under the action of the reset member, and is partially inserted into the first rotating member 191, so that the first rotating member 191 and the first rotating member 191 are connected with each other. Locking between the second rotating members 192 .

Wherein, as shown in FIG. 3 , a ceiling unit 17 is also installed on the seat portion 11 , and the ceiling unit 17 includes a ceiling rod 171 , a ceiling rotating member 172 and a tent cloth 173 .

Further, as shown in FIGS. 13-14 , a ceiling rotating member 172 is installed on the outside of the first rotating member 191 . The ceiling rod rotating member 172 is rotatably connected to the first rotating member 191 and is fixedly connected to the ceiling rod 171 .

The two ceiling rods 171 are used to support the tent cloth 173 , and one side of the tent cloth 173 is fixed on the first back 11 . The ceiling rotating member 172 is used to adjust the included angle between the ceiling rod 171 and the first back portion 11 to facilitate unfolding or folding of the awning. When the ceiling rotating member 172 is rotated, the ceiling rod 171 can be driven to be turned upward and folded.

Further, as shown in FIG. 8 , the rear side of the seat plate 121 is provided with a handle hole 1212. After the seat frame assembly 10 is completely folded, after the user's hand is inserted into the handle hole 1212, the entire stroller or the stroller can be moved. The entire seat frame assembly 10 lifts up for easy handling.

By implementing this embodiment, the folding of the first back 11 relative to the second back 18 and the angle adjustment and folding of the second back 18 relative to the seat portion 12 can be realized, which increases the flexibility of adjustment and can meet the different needs of users .

Stroller Rack:

As shown in Figures 15-30, it is a schematic diagram of the structure of the baby stroller frame in the first embodiment.

As shown in FIG. 15 , 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. 16-17 , 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 rotate to drive the first rotating joint 25 to unlock.

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. 17 , the button 271 is in the shape of a long strip, and the protruding strip 2713 of the button 271 is in the shape of a long strip, which is exposed to the outside of the unlocking trigger mechanism 27 and has enough area to allow four fingers to 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. 16 , 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. 17 , the surface of the spring mounting block 276 facing the button 271 is provided with two circular 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. 16 , 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. 16-17 , 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. 18-22 , 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 251 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. 18-22 , the first rotating joint 25 further includes a gear 254 , the upper push rod rotating housing 251 is provided with a first gear slot 2511 , and the lower push rod rotating housing 252 is provided with a second gear 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 20-21, 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. 18-19 , the first rotating joint 25 further includes an upper cover 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. 21-22 , the first rotary joint 25 further includes a spring mounting seat 256 , a pushing spring 257 and a reset member 258 , the pushing spring 257 is mounted on the spring mounting seat 256 , and the spring mounting seat 256 includes a direction toward 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. 23-29 , 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;

The lower push rod rotating member 263 , the front support rotating member 264 and the rear support rotating member 265 are all provided with a lower locking groove 268 , 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. 28-29 , 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. 24-26 , 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. 24-25 , 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 upward along the elongated groove and is released from the lower locking groove 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. 27 , the lower wire 261 is sleeved with a return spring 2611 . 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.

Further, as shown in FIG. 31 , 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. 32, 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 connecting rod 29b The other end of the 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 handrail 27 .

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. 34-35 as 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.

The folding process of the stroller frame is as follows:

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 Figure 36, the method of folding a stroller includes the following steps:

S201: operate the switch unit 14 to unlock the upper pivot joint 19 and the lower pivot joint 13;

S202: Turn the first back 11 forward and downward to make the first back 11 approach the second back 18;

S203: Turn the second back 18 forward and downward to make the second back 18 approach the seat portion 12;

S204: operate the unlocking trigger mechanism 27 to unlock the first rotating joint 25;

S205: Turn the upper push rod 21 backward and downward to approach the lower push rod 22;

S206: The second rotating joint 26 is unlocked, and the lower push rod 22 is turned forward and downward to approach the front bracket 23;

S207 : Lift the handle hole 1212 on the seat frame assembly 10 (see FIG. 32 ), and the front bracket 23 and the rear bracket 24 are naturally folded under the action of gravity.

Further, when operating the unlocking trigger mechanism 27 in step S204,

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

The unlocking trigger mechanism 27 is then rotated forward.

By implementing this embodiment, the seat frame assembly is folded first, and then the baby stroller frame is folded, and the seat frame assembly 10 and the baby stroller frame 20 are folded and retracted independently, which increases the flexibility of adjustment and satisfies the user's needs. different needs.

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 (13)

1. A stroller comprising a seat frame assembly (10) and a stroller frame (20), characterized in that the seat frame assembly (10) comprises a first back (11), a second back (18), a seat (12), a switch unit (14), a connection upper swivel joint (19) between the first back (11) and the second back (18), and a connection lower swivel joint (13) between the second back (18) and the seat (12), the switch unit (14) is mounted on a cross beam (16) between the first back (11) and the second back (18), the cross beam (16) is connected with the upper swivel joint (19), and the switch unit (14) is capable of unlocking the upper swivel joint (19) and the lower swivel joint (13).

2. The stroller of claim 1,

when the folding chair is folded, after the switch unit (14) is operated, the switch unit (14) drives the upper rotating joint (19) and the lower rotating joint (13) to be unlocked, so that the first back part (11) can be folded in a rotating mode relative to the second back part (18), and the second back part (18) can be folded in a rotating mode relative to the seat part (12);

when the seat is unfolded, the first back part (11) is rotated, after the first back part (11) is rotated and unfolded to a proper position relative to the second back part (18), the upper rotating joint (19) locks the first back part (11), and after the second back part (18) is rotated and unfolded to a proper position relative to the seat part (12), the lower rotating joint (13) locks the second back part (18).

3. The stroller of claim 1, wherein the switch unit (14) comprises a flip (141), a return spring (142) and a wire (143), the flip (141) is rotatably connected to the cross member (16), the return spring (142) is installed between the flip (141) and the cross member (16), one end of the wire (143) is connected to the flip (141), and the other end is connected to the upper rotary joint (19) and the lower rotary joint (13);

when the turnover piece (141) is rotated, the turnover piece (141) pulls the steel wire (143), and the steel wire (143) drives the upper rotating joint (19) and the lower rotating joint (13) to be unlocked.

4. The stroller of claim 1, wherein the lower pivot joint (13) comprises a first housing (131), a second housing (132), a pivot shaft (133), a locking pin (134) and a locking slot (135);

the first housing (131) is connected to the second back portion (18), the second housing (132) is connected to the seat portion (12), the rotating shaft (133) connects the first housing (131) and the second housing (132), the first housing (131) is rotatable about the rotating shaft (133), the locking pin (134) is connected to the switch unit (14) and is installed between the first housing (131) and the second housing (132), and the locking groove (135) is formed on the second housing (132);

when locked, the locking pin (134) is inserted into the locking groove (135);

when the lock is unlocked, the switch unit (14) drives the locking pin (134) to be disengaged from the locking groove (135).

5. Stroller according to claim 4, characterized in that the lower revolute joint (13) further comprises a sliding slot housing (136), a sliding member (137) and a claw plate (138), the sliding groove shell (136) is connected between the second back part (18) and the second shell (132), the sliding groove shell (136) is connected with the switch unit (14), one end of the locking pin (134) is fixed on the sliding piece (137), the other end of the locking pin passes through the limit groove (1361) of the sliding groove shell (136) and can slide along the sliding groove shell (136), the jaw plate (138) is mounted on the second housing (132), a plurality of catching slots (1381) on the jaw plate (138) correspond to the locking slots (135), the other end of the locking pin (134) passes through the sliding groove shell (136) and then is inserted into the clamping groove (138) and the locking groove (135).

6. The stroller of claim 1, wherein the upper pivot joint (19) comprises a first pivot member (191), a second pivot member (192) and a cam (193), the first pivot member (191) being coupled to the first back portion (11), the second pivot member (192) being coupled to the second back portion (18), the first pivot member (191) being rotatably coupled to the second pivot member (192);

when the upper rotating joint (19) is locked, the cam (193) is located between the first rotating member (191) and the second rotating member (192) in the axial direction;

the switch unit (14) can drive the cam (193) to be separated from the first rotating piece (191) or the second rotating piece (192) along the axial direction, and the upper rotating joint (19) is unlocked.

7. Stroller according to claim 1, characterized in that the stroller frame (20) comprises an upper push bar (21), a lower push bar (22), a front bracket (23), a rear bracket (24), a first swivel joint (25), a second swivel joint (26) and an unlocking trigger mechanism (27), the unlocking trigger mechanism (27) is arranged on the upper push rod (21), the lower end of the upper push rod (21) is connected with the upper end of the lower push rod (22) through the first rotating joint (25), the lower end of the lower push rod (22) is connected with the upper ends of the front bracket (23) and the rear bracket (24) through the second rotary joint (26), the unlocking trigger mechanism (27) is used for triggering the first rotating joint (25) to unlock, and the second rotating joint (26) is triggered to unlock after the lower push rod (22) is rotated.

8. The stroller of claim 7, wherein the unlocking trigger mechanism (27) comprises a button (271), and the unlocking trigger mechanism (27) is configured to unlock itself after pressing the button (271) and rotate to unlock the first rotary joint (25);

the unlocking trigger mechanism (27) further comprises an upper semicircular shell (272), a telescopic piece (273), a spring and a lower semicircular shell (274), wherein the upper semicircular shell (272) and the lower semicircular shell (273) are spliced to form a cylindrical pipe, a part of the key (271) extends out of the lower semicircular shell (273), the key (271) is installed between the lower semicircular shell (273) and the spring, the telescopic piece (273) is connected with the upper semicircular shell (272), and two ends of the telescopic piece (273) are respectively connected with an upper steel wire;

after the key (271) is pressed, the unlocking trigger mechanism (27) is unlocked, the key (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.

9. The stroller of claim 8, wherein the push-up rod (21) comprises an inner tube (211) and an outer tube (212), the cylindrical tube fitting over the inner tube (211);

the unlocking trigger mechanism (27) further comprises a sleeve (275), the sleeve (275) is fixedly connected with the outer pipe (212), two ends of the cylindrical pipe are respectively inserted into the sleeve (275) and can rotate, a locking groove (2751) is formed in the sleeve (275), two ends of the key (271) extend out of locking blocks (2711), the locking blocks (2711) are inserted into the locking groove (2751), when the key (271) is pressed, the locking blocks (2711) are separated from the locking groove (2751), and the cylindrical pipe can rotate relative to the sleeve (275).

10. The stroller of claim 8, wherein the telescopic member (273) comprises 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 connected to one of the upper steel wires, and each of the first connecting member (2731) and the second connecting member (2732) is provided with a ramp boss (2735);

two slope grooves (2721) are seted up in last semicircle shell (272), slope boss (2735) are embedded in slope groove (2721), when last semicircle shell (272) rotate, slope groove (2721) promote two slope boss (2735) drive first telescopic link (2733) with second telescopic link (2734) are close to each other and retract.

11. The stroller of claim 7, wherein the first pivot joint (25) comprises an upper push rod pivot housing (251), a lower push rod pivot housing (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), the upper locking piece (253) is connected with the unlocking trigger mechanism (27) through an upper steel wire, and the first rotating joint (25) is unlocked when the upper steel wire pulls the upper locking piece (253);

the first rotating joint (25) also comprises a gear (254), a first gear groove (2511) is arranged in the upper push rod rotating shell (251), a second gear groove (2521) is arranged in the lower push rod rotating shell (252),

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

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.

12. The stroller of claim 7, wherein the second pivot joint (26) comprises a lower wire (261) and a lower locking member (262), and when the upper push rod (21) is pivoted, the lower wire (261) pulls the lower locking member (262) to unlock the second pivot joint (26);

the second rotating joint (26) comprises a lower push rod rotating piece (263), a front support rotating piece (264) and a rear support rotating piece (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 support rotating part (264) through a first rotating shaft (266);

the front bracket rotating piece (264) is connected with the upper end of the front bracket (23), and the front bracket rotating piece (264) is rotatably connected with the rear bracket rotating piece (265) through a second rotating shaft (267);

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

lower locking grooves (268) are formed in the lower push rod rotating part (263), the front support rotating part (264) and the rear support rotating part (265), the lower locking part (262) is inserted into the lower locking grooves (268), and the second rotating joint (26) is locked.

13. A method of collapsing a stroller for a stroller according to any of claims 1 to 12, comprising the steps of:

-operating the switch unit (14) to unlock the upper revolute joint (19) and the lower revolute joint (13);

-turning the first back (11) forwards and downwards so that the first back (11) approaches the second back (18);

turning the second back part (18) forwards and downwards to enable the second back part (18) to approach the seat part (12);

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

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

the second rotary joint (26) is unlocked, and the lower push rod (21) is turned forwards and downwards to be close to the front bracket (23);

lifting a lifting handle hole (1212) on the seat frame assembly (10), and folding the front bracket (23) and the rear bracket (24).

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