A basket frame and trolley

Abstract

This invention discloses a basket frame that can move from an unfolded state to a folded state after the locking device is unlocked. It includes a first support rod, to which a second support rod is connected, allowing it to slide vertically relative to the first support rod. The upper end of the second support rod has a second connecting seat, and the two sides of the second connecting seat are rotatably connected to a first support frame and a second support frame. The lower end of the first support rod has a first connecting seat, and the two sides of the first connecting seat are rotatably connected to a first support frame and a second support frame. When the first and second support frames rotate and fold relative to the second connecting seat, bringing them closer together, the second support rod slides downward relative to the first support rod, and the first and second support frames rotate relative to the first connecting seat, bringing them closer together. This invention also discloses a trolley using the aforementioned basket frame. The basket frame and trolley of this invention have a simple structure and a small folded size.

Description

[Technical Field]

[0001] This invention relates to a basket frame. This invention also relates to a trolley. [Background Technology]

[0002] Infant carriers are common baby products, and they are generally used to care for babies under 6 months old. After placing the baby in the carrier, it can be attached to the stroller frame and pushed around, or the carrier can be carried directly. However, traditional infant carrier frames are relatively complex and bulky when folded. Furthermore, traditional carriers require separate unlocking and folding of both the carrier and frame; the carrier must be unlocked and folded first, and then the frame, making folding strollers with carriers cumbersome.

[0003] Therefore, the present invention was developed based on the above-mentioned shortcomings. [Summary of the Invention]

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a basket frame with a simple structure and small folding volume.

[0005] The present invention also provides a trolley having the aforementioned basket frame, which is easy to operate when folded and has a small volume after folding.

[0006] This invention is achieved through the following technical solution:

[0007] A basket frame, which can move from an unfolded state to a folded state after the locking device is unlocked, includes a first support rod, a second support rod connected to the first support rod and slidably sliding relative to it, a second connecting seat at the upper end of the second support rod, a first support frame and a second support frame rotatably connected to both sides of the second connecting seat, a first connecting seat at the lower end of the first support rod, a first support frame and a second support frame rotatably connected to both sides of the first connecting seat, when the first support frame and the second support frame rotate and fold relative to the second connecting seat and move closer to each other, the second support rod slides downward relative to the first support rod, and the first support frame and the second support frame rotate relative to the first connecting seat and move closer to each other.

[0008] A first linkage component is provided between the first support frame and the first support bracket, and a second linkage component is provided between the second support frame and the second support bracket, and the ...

[0009] The first linkage component includes a U-shaped first linkage rod, the upper end of which is hinged to the first support frame, and the lower end of which is hinged to the first support bracket; the second linkage component includes a U-shaped second linkage rod, the upper end of which is hinged to the second support frame, and the lower end of which is hinged to the second support bracket.

[0010] A handle is connected to the first support frame or the second connecting seat. The handle includes a fixed seat fixed to the first support frame or the second connecting seat, and a U-shaped rod and a rod sleeve slidably connected to the rod. The rod sleeve is rotatably connected to the fixed seat. A locking assembly is provided between the rod sleeve and the fixed seat to lock them together. The locking assembly includes a locking groove provided on the fixed seat and the rod sleeve along the circumferential direction. A locking element is provided within the space enclosed by the fixed seat and the rod sleeve, which can move laterally and engage simultaneously with the locking groove on the fixed seat and the rod sleeve. A sliding block is provided between the rod and the sleeve, which can slide radially and push the engaging member to disengage from the engaging groove on the rod sleeve when sliding. The rod is provided with a push block that can push the sliding block to slide when it slides relative to the rod sleeve. The sliding block is provided with a first inclined surface. The rod sleeve is provided with a second inclined surface that cooperates with the first inclined surface and can push the first inclined surface to move the engaging member laterally when the sliding block slides. A first return spring is provided between the engaging member and the fixed seat to push the engaging member to return to its lateral position. A second return spring is provided between the push block and the rod sleeve to push the rod to return to its sliding position.

[0011] The locking device includes a first locking assembly disposed between a first support frame and a second connecting seat. The first support frame is provided with a first unlocking assembly for unlocking the first locking assembly. A second locking assembly is disposed between the second support frame and the second connecting seat. A second unlocking assembly is disposed between the first support frame and the second locking assembly, which can drive the second locking assembly to unlock when the first support frame rotates and folds relative to the second connecting seat. A third locking assembly is disposed between the second support rod and the first support rod for locking the two. A third unlocking assembly is disposed inside the second connecting seat, which can be driven by the second unlocking assembly to unlock the third locking assembly when the second unlocking assembly unlocks the second locking assembly.

[0012] The first locking assembly includes a first locking hole on a second connecting seat. A first locking rod, slidable relative to the first support frame, engages or disengages with the first locking hole. A third return spring, capable of pushing the first locking rod to slide back to its original position, is also provided between the first locking rod and the first support frame. The first unlocking assembly includes an unlocking seat fixed to the first support frame. An operating block is rotatably connected to the unlocking seat. A first pull rope, capable of pulling the first locking rod away from the first locking hole when the operating block rotates, is provided between the operating block and the unlocking seat. A gap is formed between the operating block and the unlocking seat. A pressing block, slidable within the operating block, engages or disengages from the gap. When the pressing block is within the gap, it prevents the operating block from rotating relative to the unlocking seat. When the pressing block disengages from the gap, it makes room for the rotation of the operating block. A button is provided on the operating block to push the pressing block out of the gap. A fourth return spring, capable of pushing the pressing block back to its original position, is provided between the pressing block and the operating block.

[0013] The second locking assembly includes a second locking hole on the second connecting seat. A second locking rod is provided within the second support frame, capable of sliding relative to it and engaging or disengaging with the second locking hole. A fifth return spring is provided between the second locking rod and the second support frame, capable of pushing the second locking rod to slide back to its original position. A sliding groove is provided on the second connecting seat, communicating with the second locking hole. The second unlocking assembly includes a push rod that can slide within the sliding groove and, when sliding, pushes the second locking rod out of the second locking hole. A drive wall is provided on the first support frame, capable of pushing the push rod to slide when it rotates and folds relative to the second connecting seat. A sixth return spring is provided between the push rod and the second connecting seat, capable of pushing the push rod to slide back to its original position.

[0014] The third locking assembly includes a third locking hole on the side wall of the first support rod. The second support rod includes a rod body that can slide within the first support rod and a third connecting seat fixed within the rod body. The third connecting seat contains a locking block that can move laterally within it and can pass through the side wall of the second support rod to engage or disengage with the third locking hole. The third connecting seat also contains a seventh return spring that can push the locking block to slide back to its original position. The third unlocking assembly includes a sliding seat that can slide up and down within the third connecting seat and can drive the locking block to disengage from the third locking hole when sliding upward. The third unlocking assembly also includes a moving block located within the second connecting seat and that can be driven upward by the push rod when the push rod pushes the second locking rod. A second pull rope connects the moving block and the sliding seat. An eighth return spring that can push the sliding seat to slide back to its original position is also provided between the third connecting seat and the sliding seat.

[0015] A stroller includes a foldable frame, the frame including rear legs, a rear wheel a at the lower end of the rear legs, a rear leg seat at the upper end of the rear legs, a first connecting piece rotatably connected to the rear leg seat, a front leg fixedly connected to the first connecting piece, a front wheel b at the lower end of the front leg, a second connecting piece rotatably connected to the rear leg seat, a push rod assembly fixedly connected to the second connecting piece, a locking assembly for locking the frame in an unfolded state within the rear leg seat, a basket frame as described in any one of the claims connected to the frame, a second support rod having an unlocking part at the lower end, wherein during the movement of the basket frame from an unfolded state to a folded state, the second support rod slides and retracts relative to the first support rod, causing the unlocking part to drive the locking assembly to unlock, and after the locking assembly unlocks, the push rod assembly and the front leg can rotate relative to the rear leg seat and move closer to the rear legs.

[0016] The first connecting piece and the second connecting piece are provided with a linkage piece that is hinged to both of them and can drive the first connecting piece and the front leg to rotate and fold relative to the rear leg when the second connecting piece and the push rod assembly rotate and fold relative to the rear leg seat. The rear leg seat is provided with a connecting part. The lower end of the first support rod is provided with a locking seat that can be detachably locked with the connecting part. The locking assembly includes a locking part provided on the second connecting piece. The rear leg seat is provided with a locking block that can slide relative to it and engage or disengage with the locking part. A ninth return spring is provided between the locking block and the rear leg seat that can push the locking block to slide back to its original position. The locking block is provided with a protrusion that is exposed on the rear leg seat and can be pushed by the lower end of the unlocking part when the basket frame is folded.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. When the basket frame of the present invention is folded, the first support frame and the second support frame rotate downward relative to the second connecting seat and move closer to each other. The second support rod slides downward relative to the first support rod, causing the second support rod and the first support rod to retract relative to each other. The first support frame and the second support frame rotate downward relative to the first connecting seat and move closer to each other, thus realizing the overall folding of the basket frame. This makes the basket frame small in size after folding, easy to store or carry. Moreover, the structure of the entire basket frame is also very simple. After attaching a cloth cover to the basket frame, it can be used as a basket, and the baby is placed in the space enclosed by the cloth cover.

[0019] 2. The first support frame and the first support frame of the basket frame of the present invention are provided with a first linkage member that is movably connected to the two, and the second support frame and the second support frame are provided with a second linkage member that is movably connected to the two. When the basket frame is unfolded, the first linkage member and the second linkage member can apply force to the first support frame and the second support frame, which can enhance the load-bearing capacity of the first support frame and the second support frame, and make the basket frame more solid and reliable when unfolded.

[0020] 3. The stroller of the present invention has the aforementioned carrier frame. After the carrier frame is connected to the cloth cover, the stroller frame can be pushed to take the baby out, such as to the park or shopping mall. When the stroller needs to be folded, the carrier frame is folded first. During the folding process, the second support rod slides relative to the first support rod. During the sliding process, the lower end of the second support rod pushes the locking component of the stroller frame to unlock the locking component. Once the locking component is unlocked, the stroller frame can be folded. Therefore, the unlocking operation of the stroller frame is linked, making the stroller folding operation more convenient and quick. [Attached Image Description]

[0021] Figure 1 This is a three-dimensional view of the basket frame of the present invention;

[0022] Figure 2 This is a side view of the basket frame of the present invention during folding;

[0023] Figure 3 This is one of the exploded views of the components of the basket frame of the present invention;

[0024] Figure 4 This is the second exploded view of the components of the basket frame of the present invention;

[0025] Figure 5 This is the third exploded view of the components of the basket frame of the present invention;

[0026] Figure 6 This is a cross-sectional view of the basket frame of the present invention;

[0027] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0028] Figure 8 This is the fourth exploded view of the components of the basket frame of the present invention;

[0029] Figure 9 This is the fifth exploded view of the components of the basket frame of the present invention;

[0030] Figure 10 This is the sixth exploded view of the components of the basket frame of the present invention;

[0031] Figure 11 This is a cross-sectional view of the components of the basket frame of the present invention;

[0032] Figure 12 This is a perspective view of the trolley of the present invention;

[0033] Figure 13 This is a perspective view of the components of the trolley of the present invention;

[0034] Figure 14 This is an exploded view of the components of the trolley of the present invention;

[0035] Figure 15 This is one of the side views of the trolley during the folding process of the present invention;

[0036] Figure 16 This is the second side view of the folding process of the trolley of the present invention;

[0037] Figure 17 This is the third side view of the folding process of the trolley of the present invention.

Detailed Implementation Methods

[0038] The present invention will now be further described with reference to the accompanying drawings:

[0039] like Figure 1 , Figure 2 , Figure 6 and Figure 12 As shown, a baby carrier frame 10 can be moved from an unfolded state to a folded state after the locking device is unlocked. With a fabric cover attached to the carrier frame 10, it can be used as a baby carrier or a pet carrier. In the unfolded state, a baby or pet can be placed inside the carrier; in the folded state, the carrier is convenient for users to carry or store. The carrier can also be mounted on a foldable stroller frame 7 for use with a stroller.

[0040] like Figure 1 , Figure 2 and Figure 6As shown, the basket frame 10 includes a first support rod 11, on which a second support rod 12 is connected and can slide up and down relative to it. The upper end of the second support rod 12 is provided with a second connecting seat 22. The two sides of the second connecting seat 22 are rotatably connected to a first support frame 31 and a second support frame 32. The lower end of the first support rod 11 is provided with a first connecting seat 21, on which the two sides of the first connecting seat 21 are rotatably connected to a first support frame 41 and a second support frame 42. When the first support frame 31 and the second support frame 32 rotate and fold relative to the second connecting seat 22 and move closer to each other, the second support rod 12 slides downward relative to the first support rod 11, and the first support frame 41 and the second support frame 42 rotate relative to the first connecting seat 21 and move closer to each other. When folded, the first support frame 31 and the second support frame 32 rotate downward relative to the second connecting seat 22 and move closer to each other. The second support rod 12 slides downward relative to the first support rod 11, causing the second support rod 12 and the first support rod 11 to retract towards each other. The first support frame 41 and the second support frame 42 rotate downward relative to the first connecting seat 21 and move closer to each other, ultimately achieving the overall folding of the basket frame 10. This results in a small folded size for easy storage or carrying, and the overall structure of the basket frame is also very simple. In actual use, a cloth cover is attached to the basket frame 10. The upper end of the cloth cover is connected to the first support frame 31 and the second support frame 32, and the lower end of the cloth cover is connected to the first support frame 41 and the second support frame 42. Therefore, in the unfolded state, the baby or pet is placed in the space enclosed by the cloth cover, with the bottom supported by the first support frame 41 and the second support frame 42. The upper end of the flexible fabric cover is connected to the first support frame 31 and the second support frame 32, which can apply an upward pulling force to the first support frame 41 and the second support frame 42, thereby enabling the first support frame 41 and the second support frame 42 of the basket to have support capabilities.

[0041] like Figure 1 , Figure 2 and Figures 12 to 15 As shown, a first linkage member 51 is provided between the first support frame 31 and the first support frame 41, and a second linkage member 52 is provided between the second support frame 32 and the second support frame 42, both of which are movably connected. When the basket is unfolded, the first linkage member 51 and the second linkage member 52 can apply an upward force to the first support frame 41 and the second support frame 42, ensuring that the first support frame 41 and the second support frame 42 are not solely pulled by the fabric cover, thus enhancing their load-bearing capacity and making the basket frame more robust and reliable in the unfolded state. Furthermore, when the basket is folded, the first linkage member 51 can move relative to the first support frame 31 and the first support frame 41, and the second linkage member 52 can move relative to the second support frame 32 and the second support frame 42, achieving coordinated folding and making the entire basket frame folding convenient and quick.

[0042] like Figure 1 , Figure 2 and Figures 12 to 15 As shown, the first linkage 51 includes a U-shaped first linkage rod 511, the upper end of which is hinged to the first support frame 31, and the lower end of which is hinged to the first support frame 41. The second linkage 52 includes a U-shaped second linkage rod 521, the upper end of which is hinged to the second support frame 32, and the lower end of which is hinged to the second support frame 42. When the basket frame is folded, the second support rod 12 slides downward and retracts relative to the first support rod 11, the first linkage rod 511 rotates relative to the first support frame 31 and the first support frame 41, and the second linkage rod 521 rotates relative to the second support frame 32 and the second support frame 42. The first linkage rod 511 and the second linkage rod 521 can come closer to each other, which makes the folding operation of the basket frame convenient and the folded size small.

[0043] like Figures 1 to 3As shown, a handle 33 is connected to the first support frame 31 or the second connecting seat 22, allowing the user to easily carry the basket. The handle 33 includes a fixed seat 331 fixed to the first support frame 31 or the second connecting seat 22, a U-shaped rod 332, and a rod sleeve 333 slidably connected to the rod 332. The rod sleeve 333 is rotatably connected to the fixed seat 331. A locking assembly is provided between the rod sleeve 333 and the fixed seat 331 to lock them together. The locking assembly includes a locking groove 341 arranged circumferentially on the fixed seat 331 and the rod sleeve 333. Within the space enclosed by the fixed seat 331 and the rod sleeve 333, a locking element 342 is provided that can move laterally and simultaneously engage with the locking groove 341 on the fixed seat 331 and the rod sleeve 333. A radially sliding connection is provided between the locking element 342 and the rod sleeve 333. Furthermore, during sliding, a sliding block 343 is provided that can push the engaging member 342 to disengage from the engaging groove 341 on the rod sleeve 333. The rod 332 is provided with a pusher block 344 that can push the sliding block 343 to slide when it slides relative to the rod sleeve 333. The sliding block 343 is provided with a first inclined surface 345. The rod sleeve 333 is provided with a second inclined surface 346 that cooperates with the first inclined surface 345 and can push the first inclined surface 345 to move the engaging member 342 laterally when the sliding block 343 slides. A first return spring 347 that can push the engaging member 342 to return to its lateral position is provided between the engaging member 342 and the fixed seat 331. A second return spring 348 that can push the rod 332 to return to its sliding position is provided between the pusher block 344 and the rod sleeve 333. When the basket frame needs to be folded, push the rod 332 downward, and the push block 344 will push the sliding block 343. When the sliding block 343 slides, the cooperation of the first inclined surface 345 and the second inclined surface 346 will cause the sliding block 343 to push the locking piece 342 out of the locking groove 341 on the rod sleeve 333. At this time, the rod 332 and the rod sleeve 333 can be rotated to fold the handle 33.

[0044] like Figures 4 to 11As shown, the locking device includes a first locking assembly 61 disposed between the first support frame 31 and the second connecting seat 22. The first support frame 31 is provided with a first unlocking assembly 62 for unlocking the first locking assembly 61. The second support frame 32 and the second connecting seat 22 are provided with a second locking assembly 63. The first support frame 31 and the second locking assembly 63 are provided with a second unlocking assembly 64 that can drive the second locking assembly 63 to unlock when the first support frame 31 rotates and folds relative to the second connecting seat 22. The second support rod 12 and the first support rod 11 are provided with a third locking assembly 65 for locking the two. The second connecting seat 22 is provided with a third unlocking assembly 66 that can be driven by the second unlocking assembly 64 to unlock the third locking assembly 65 when the second unlocking assembly 64 unlocks the second locking assembly 63. In this embodiment, the first unlocking component 62 is used to unlock the first locking component 61. After the first locking component 61 is unlocked and the first support frame 31 rotates and folds relative to the second connecting seat 22, the second unlocking component 64 drives the third locking component 63 to unlock, allowing the second support frame 32 to rotate and fold relative to the second connecting seat 22. Furthermore, when the second unlocking component 64 drives the third locking component 63 to unlock, the third unlocking component 66 is driven by the second unlocking component 64 and drives the third locking component 65 to unlock, allowing the second support rod 12 to slide and retract relative to the first support rod 11. Therefore, the unlocking operation of the entire locking device is linked, making the folding operation of the basket frame very convenient.

[0045] like Figures 4 to 10As shown, the first locking assembly 61 includes a first locking hole (not shown) on the second connecting seat 22. The first support frame 31 has a first locking rod 611 that can slide relative to it and engage or disengage from the first locking hole. A third return spring 612 is also provided between the first locking rod 611 and the first support frame 31 to push the first locking rod 611 to slide back to its original position. The first unlocking assembly 62 includes an unlocking seat 621 fixed on the first support frame 31. An operating block 622 is rotatably connected to the unlocking seat 621. An operation block 622 is provided between the operation block 622 and the first locking rod 611, which can pull the first locking rod 611 away from the first locking hole when the operation block 622 rotates. The first pull cord 623, the operation block 622 and the unlocking seat 621 form a gap 624, the operation block 622 is provided with a pressing block 625 that can slide in and get into or out of the gap 624. When the pressing block 625 is in the gap 624, the pressing block 625 prevents the operation block 622 from rotating relative to the unlocking seat 621. When the pressing block 625 is out of the gap 624, the pressing block 625 makes way for the rotation of the operation block 622. The operation block 622 is provided with a button 626 that can push the pressing block 625 out of the gap 624. A fourth return spring 627 that can push the pressing block 625 to reset is provided between the pressing block 625 and the operation block 622. When the basket frame 10 is in the unfolded state, the first locking lever 611 is inserted into the first locking hole. When the basket frame needs to be folded, the button 626 is pressed first. The button 626 pushes the pressing block 625 out of the gap 624 between the unlocking seat 621 and the operating block 622. Once the pressing block 625 is out of the gap 624, the operating block 622 can rotate relative to the unlocking seat 621. During the rotation, the first pulling rope 623 pulls the first locking lever 611 out of the first locking hole. At this time, the first locking assembly 61 is unlocked, and the first support frame 31 can rotate and fold relative to the second connecting seat 22. The setting of the pressing block 625 and the gap 624 serves as a double lock, which can prevent accidental locking caused by the operation block 622 being accidentally activated. Therefore, the operation block 622 can only be rotated after the button 626 is pressed, which further ensures safety. Button 626 and pressing block 625 can be engaged by inclined contact. When button 626 is pressed, pressing block 625 is disengaged from gap 624 by the inclined push.

[0046] like Figure 9 and Figure 10As shown, the second locking assembly 63 includes a second locking hole 631 provided on the second connecting seat 22. The second support frame 32 is provided with a second locking rod 632 that can slide relative to it and engage or disengage from the second locking hole 631. A fifth return spring 633 is provided between the second locking rod 632 and the second support frame 32 to push the second locking rod 632 to slide back to its original position. The second connecting seat 22 is provided with a sliding groove 221 that communicates with the second locking hole 631. The second unlocking assembly 64 includes a push rod 641 that can slide within the sliding groove 221 and push the second locking rod 632 out of the second locking hole 631 when sliding. The first support frame 31 is provided with a drive wall 642 that can push the push rod 641 to slide when it rotates and folds relative to the second connecting seat 22. A sixth return spring 643 is provided between the push rod 641 and the second connecting seat 22 to push the push rod 641 to slide back to its original position. When the basket frame 10 is in the unfolded state, the second locking rod 632 is inserted into the second locking hole 631. During the unlocking of the first locking assembly 61 and the rotation and folding of the first support frame 31, the drive wall 642 on the first support frame 31 pushes the push rod 641 to slide in the second connecting seat 22. During the sliding process, the push rod 641 pushes the second locking rod 632 out of the second locking hole 631, thereby unlocking the second locking assembly 63. Therefore, the unlocking of the second locking assembly 63 is driven by the first support frame 31 during the rotation and folding process, and the unlocking operation is convenient.

[0047] like Figures 8 to 11As shown, the third locking assembly 65 includes a third locking hole 651 provided on the side wall of the first support rod 11. The second support rod 12 includes a rod body 121 that can slide within the first support rod 11 and a third connecting seat 122 fixed within the rod body 121. The third connecting seat 122 is provided with a locking block 652 that can move laterally within it and can pass through the side wall of the second support rod 12 to engage or disengage with the third locking hole 651. The third connecting seat 122 is also provided with a seventh return spring 653 that can push the locking block 652 to slide back to its original position. The third unlocking assembly 66 includes... The third unlocking assembly 66 includes a sliding seat 661 that can slide up and down within the third connecting seat 122 and can drive the locking block 652 to disengage from the third locking hole 651 when sliding upward. The third unlocking assembly 66 also includes a moving block 662 disposed within the second connecting seat 22 and which can be driven upward by the push rod 641 when the push rod 641 pushes the second locking rod 632. A second pull rope 663 is provided between the moving block 662 and the sliding seat 661 to connect the two. An eighth return spring 664 is also provided between the third connecting seat 122 and the sliding seat 661 to push the sliding seat 661 to slide back to its original position. When the basket frame 10 is in the unfolded state, the locking block 652 engages with the third locking hole 651. When the first support frame 31 rotates, driving the second unlocking component 64, the sliding push rod 641 pushes the moving block 662 upwards. The moving block 662 then pulls the sliding seat 661 upwards via the second pull rope 663. The sliding seat 661 then drives the locking block 652 to disengage from the third locking hole 651, thereby unlocking the third locking component 65. The sliding seat 661 and the drive block 652 can be engaged with an inclined surface, thus converting the vertical movement of the sliding seat 661 into the lateral movement of the locking block 652. Similarly, the push rod 641 and the moving block 662 can also be engaged with an inclined surface. Therefore, during the rotation of the first support frame 31 and the pushing rod 641, both the second locking component 63 and the third locking component 65 are simultaneously unlocked, making the folding operation of the basket frame 10 very convenient and quick.

[0048] like Figure 1 , Figures 12 to 17As shown, a stroller includes a foldable frame 7. The frame 7 includes rear legs 71, with a rear wheel 7a at the lower end of the rear legs 71 and a rear leg seat 72 at the upper end of the rear legs 71. A first connecting piece 73 is rotatably connected to the rear leg seat 72, and a front leg 74 is fixedly connected to the first connecting piece 73. A front wheel 7b is located at the lower end of the front leg 74. A second connecting piece 75 is also rotatably connected to the rear leg seat 72, and a push rod assembly 76 is fixedly connected to the second connecting piece 75. The rear leg seat 72 contains a mechanism for locking the frame 7. The stroller is positioned in the unfolded state. The frame 7 is also connected to the aforementioned carrier frame 10. The lower end of the second support rod 12 has an unlocking part 14. In this embodiment, the unlocking part 14 is the lower end of the third connecting seat 122. During the movement of the carrier frame 10 from the unfolded state to the folded state, the second support rod 12 slides and retracts relative to the first support rod 11, causing the unlocking part 14 to drive the locking assembly 8 to unlock. After the locking assembly 8 unlocks, the push rod assembly 76 and the front leg 74 can rotate relative to the rear leg seat 72 and approach the rear leg 71. This embodiment of the stroller has the aforementioned carrier frame 10. With a cloth cover attached to the carrier frame 10, the stroller frame 7 can be pushed to take the baby out, such as to the park or shopping mall. When the stroller needs to be folded, simply fold the basket frame 10 first. During the folding process, the second support rod 12 slides relative to the first support rod 11, and during the sliding process, the unlocking part 14 at the lower end of the second support rod 12 pushes the locking assembly 8 of the stroller frame 7 to unlock the locking assembly 8. Once the locking assembly 8 is unlocked, the stroller frame 7 can be folded. Therefore, the unlocking operation of the stroller frame 7 is linked. The stroller frame 7 can be unlocked simply by folding the basket frame 10, making the stroller folding operation more convenient and faster.

[0049] like Figures 12 to 17As shown, a linkage piece 77 is provided between the first connecting piece 73 and the second connecting piece 75, which is hinged to both and can drive the first connecting piece 73 and the front leg 74 to rotate and fold relative to the rear leg 71 when the second connecting piece 75 and the push rod assembly 76 rotate and fold relative to the rear leg seat 72. The rear leg seat 72 is provided with a connecting part 78. The lower end of the first support rod 11 is provided with a locking seat 13 that can be detachably locked with the connecting part 78. The locking assembly 8 includes a locking part 81 provided on the second connecting piece 75. The rear leg seat 72 is provided with a locking block 82 that can slide relative to it and engage or disengage with the locking part 81. A ninth return spring 83 is provided between the locking block 82 and the rear leg seat 72, which can push the locking block 82 to slide back to its original position. The locking block 82 is provided with a protruding block 84 that is exposed on the rear leg seat 72 and can be pushed by the unlocking part 14 at the lower end of the second support rod 12 when the basket frame 10 is folded. During the folding process of the basket frame 10, the unlocking part 14 at the lower end of the second support rod 12 pushes the protruding block 84, causing the locking block 82 to slide and disengage from the locking part 81. At this time, the locking assembly 8 is unlocked. Then, the push rod assembly 76 can be moved backward to rotate relative to the rear leg seat 72. As the push rod assembly 76 rotates and moves closer to the rear leg 71, the second connecting piece 75 pulls the first connecting piece 73 to rotate relative to the rear leg seat 72 through the linkage piece 77, thereby causing the front leg 74 to rotate and move closer to the rear leg 71, thus realizing the folding operation of the trolley.

[0050] When the stroller needs to be folded, simply press button 626 and rotate operating block 622 to unlock the first locking assembly 61. During the folding process, the second locking assembly 63 and the third locking assembly 65 of the first support frame 31 are unlocked. The second support frame 32 then folds and the second support rod 12 slides and retracts relative to the first support rod 11. During the sliding process, the lower end of the second support rod 12 pushes the protrusion 84, unlocking the locking assembly 8 of the frame 7. Then, rotating the push rod assembly 76 folds the frame 7. The entire stroller folding operation is very convenient and quick.

[0051] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A basket frame (10) that can move from an unfolded state to a folded state after the locking device is unlocked, characterized in that: The system includes a first support rod (11), to which a second support rod (12) is connected and can slide up and down relative to it. The upper end of the second support rod (12) is provided with a second connecting seat (22). A first support frame (31) and a second support frame (32) are rotatably connected to both sides of the second connecting seat (22). The lower end of the first support rod (11) is provided with a first connecting seat (21), to which a first support frame (41) and a second support frame (42) are rotatably connected to both sides. When the first support frame (31) and the second support frame (32) rotate and fold relative to the second connecting seat (22) and move closer together, the second support rod (12) slides downward relative to the first support rod (11), and the first support frame (41) and the second support frame (42) rotate relative to the first connecting seat (21) and move closer together. The locking device includes a component located on the first support frame (31). 1) A first locking assembly (61) between the second connecting seat (22) and the first support frame (31) is provided with a first unlocking assembly (62) for unlocking the first locking assembly (61), a second locking assembly (63) is provided between the second support frame (32) and the second connecting seat (22), a second unlocking assembly (64) is provided between the first support frame (31) and the second locking assembly (63) to drive the second locking assembly (63) to unlock when the first support frame (31) rotates and folds relative to the second connecting seat (22), a third locking assembly (65) for locking the two is provided between the second support rod (12) and the first support rod (11), and a third unlocking assembly (66) is provided in the second connecting seat (22) to be driven by the second unlocking assembly (64) to unlock the third locking assembly (65) when the second unlocking assembly (64) unlocks the second locking assembly (63).

2. The basket frame (10) according to claim 1, characterized in that: A first linkage member (51) is provided between the first support frame (31) and the first support frame (41) for movable connection between the two, and a second linkage member (52) is provided between the second support frame (32) and the second support frame (42) for movable connection between the two.

3. The basket frame (10) according to claim 2, characterized in that: The first linkage member (51) includes a U-shaped first linkage rod (511), the upper end of which is hinged to the first support frame (31), and the lower end of which is hinged to the first support frame (41); the second linkage member (52) includes a U-shaped second linkage rod (521), the upper end of which is hinged to the second support frame (32), and the lower end of which is hinged to the second support frame (42).

4. The basket frame (10) according to claim 1, characterized in that: A handle (33) is connected to the first support frame (31) or the second connecting seat (22). The handle (33) includes a fixed seat (331) fixed to the first support frame (31) or the second connecting seat (22). The handle (33) also includes a U-shaped rod (332) and a rod sleeve (333) slidably connected to the rod (332). The rod sleeve (333) is rotatably connected to the fixed seat (331). A locking assembly for locking the fixed base (331) and the rod sleeve (333) is provided. The locking assembly includes a locking groove (341) arranged circumferentially on the fixed base (331) and the rod sleeve (333). Within the space enclosed by the fixed base (331) and the rod sleeve (333), there is a locking element (342) that can move laterally and engages simultaneously with the locking groove (341) on the fixed base (331) and the rod sleeve (333). The locking element (342) engages with the rod. A sliding block (343) is provided between the sleeves (333) to allow radial sliding and to push the engaging member (342) away from the engaging groove (341) on the rod sleeve (333) during sliding. The rod (332) is provided with a pusher block (344) that pushes the sliding block (343) to slide when it slides relative to the rod sleeve (333). The sliding block (343) is provided with a first inclined surface (345), and the rod sleeve (333) is provided with a surface that interacts with the first inclined surface (345). 345) A second inclined surface (346) is provided to cooperate with and push the first inclined surface (345) when the sliding block (343) slides, so as to move the locking member (342) laterally. A first return spring (347) is provided between the locking member (342) and the fixed seat (331) to push the locking member (342) to return to its lateral position. A second return spring (348) is provided between the pushing block (344) and the rod sleeve (333) to push the rod (332) to return to its sliding position.

5. The basket frame (10) according to claim 1, characterized in that: The first locking assembly (61) includes a first locking hole on the second connecting seat (22). The first support frame (31) contains a first locking rod (611) that can slide relative to it and engage or disengage from the first locking hole. A third return spring (612) is provided between the first locking rod (611) and the first support frame (31) to push the first locking rod (611) back to its original position. The first unlocking assembly (62) includes an unlocking seat (621) fixed to the first support frame (31). An operating block (622) is rotatably connected to the unlocking seat (621). A first pull rope (623) is provided between the operating block (622) and the first locking rod (611) to pull the first locking rod (611) away from the first locking hole when the operating block (622) rotates. A gap (624) is formed between the operating block (622) and the unlocking seat (621). The operating block (622) is provided with a pressing block (625) that can slide inside and engage or disengage from the gap (624). When the pressing block (625) is in the gap (624), the pressing block (625) prevents the operating block (622) from rotating relative to the unlocking seat (621). When the pressing block (625) disengages from the gap (624), the pressing block (625) makes way for the rotation of the operating block (622). The operating block (622) is provided with a button (626) that can push the pressing block (625) out of the gap (624). A fourth return spring (627) that can push the pressing block (625) back to its original position is provided between the pressing block (625) and the operating block (622).

6. The basket frame (10) according to claim 1, characterized in that: The second locking assembly (63) includes a second locking hole (631) on the second connecting seat (22), a second locking rod (632) that can slide relative to the second supporting frame (32) and engage or disengage from the second locking hole (631), a fifth return spring (633) that can push the second locking rod (632) to slide back to its original position between the second locking rod (632) and the second supporting frame (32), and a groove communicating with the second locking hole (631) on the second connecting seat (22). 221), the second unlocking component (64) includes a push rod (641) that can slide in the slide groove (221) and push the second locking rod (632) out of the second locking hole (631) when sliding. The first support frame (31) is provided with a drive wall (642) that can push the push rod (641) to slide when it rotates and folds relative to the second connecting seat (22). A sixth return spring (643) is provided between the push rod (641) and the second connecting seat (22) to push the push rod (641) to slide and reset.

7. The basket frame (10) according to claim 6, characterized in that: The third locking assembly (65) includes a third locking hole (651) on the side wall of the first support rod (11). The second support rod (12) includes a rod body (121) that can slide within the first support rod (11) and a third connecting seat (122) fixed within the rod body (121). The third connecting seat (122) is provided with a locking block (652) that can move laterally within it and can pass through the side wall of the second support rod (12) to engage or disengage with the third locking hole (651). The third connecting seat (122) is also provided with a seventh return spring (653) that can push the locking block (652) to slide back to its original position. The third unlocking assembly (66) includes a... The third unlocking assembly (66) includes a sliding seat (661) that slides up and down within the third connecting seat (122) and can drive the locking block (652) to disengage from the third locking hole (651) when sliding upward. The third unlocking assembly (66) also includes a moving block (662) that is located within the second connecting seat (22) and can be driven upward by the push rod (641) when the push rod (641) pushes the second locking rod (632). A second pull rope (663) is provided between the moving block (662) and the sliding seat (661) to connect the two. An eighth return spring (664) that can push the sliding seat (661) to slide back to its original position is also provided between the third connecting seat (122) and the sliding seat (661).

8. A trolley, characterized in that: The vehicle includes a foldable frame (7), which includes a rear leg (71) with a rear wheel (7a) at its lower end and a rear leg seat (72) at its upper end. A first connecting piece (73) is rotatably connected to the rear leg seat (72), and a front leg (74) is fixedly connected to the first connecting piece (73). A front wheel (7b) is located at the lower end of the front leg (74). A second connecting piece (75) is also rotatably connected to the rear leg seat (72), and a push rod assembly (76) is fixedly connected to the second connecting piece (75). The rear leg seat (72) contains a... The frame (7) is locked in the unfolded state by a locking assembly (8). The frame (7) is also connected to a basket frame (10) as described in any one of claims 1 to 7. The lower end of the second support rod (12) is provided with an unlocking part (14). During the process of the basket frame (10) moving from the unfolded state to the folded state, the second support rod (12) slides and retracts relative to the first support rod (11), so that the unlocking part (14) drives the locking assembly (8) to unlock. After the locking assembly (8) is unlocked, the push rod assembly (76) and the front leg (74) can rotate relative to the rear leg seat (72) and approach the rear leg (71).

9. The trolley according to claim 8, characterized in that: A linkage piece (77) is provided between the first connecting piece (73) and the second connecting piece (75), which is hinged to both and can drive the first connecting piece (73) and the front leg (74) to rotate and fold relative to the rear leg seat (71) when the second connecting piece (75) and the push rod assembly (76) rotate and fold relative to the rear leg seat (72). A connecting part (78) is provided on the rear leg seat (72). A snap-fit ​​seat (13) is provided at the lower end of the first support rod (11) and can be detachably snapped into the connecting part (78). The locking assembly The component (8) includes a locking part (81) provided on the second connecting piece (75), and a locking block (82) provided on the rear leg seat (72) that can slide relative to it and engage or disengage with the locking part (81). A ninth return spring (83) is provided between the locking block (82) and the rear leg seat (72) to push the locking block (82) to slide back to its original position. The locking block (82) is provided with a protruding block (84) that is exposed on the rear leg seat (72) and can be pushed by the lower end of the unlocking part (14) when the basket frame (10) is folded.

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