Basket framework and cart

Abstract

The basket framework can move from an unfolded state to a folded state after a locking device is unlocked and comprises a first supporting rod, a second supporting rod capable of sliding up and down relative to the first supporting rod is connected to the first supporting rod, and a second connecting base is arranged at the upper end of the second supporting rod; a first supporting frame and a second supporting frame are rotatably connected to the two sides of the second connecting base, a first connecting base is arranged at the lower end of the first supporting rod, and a first supporting frame and a second supporting frame are rotatably connected to the two sides of the first connecting base; when the first supporting frame and the second supporting frame rotate and are folded relative to the second connecting base to be close to each other, the second supporting rod slides downwards relative to the first supporting rod, and the first supporting frame and the second supporting frame rotate relative to the first connecting base to be close to each other. The invention further discloses a cart adopting the basket framework. The basket framework and the cart are simple in structure and small in size after being folded.

Description

[Technical field]

[0001] The invention relates to a basket frame and also to a stroller. [Background technology]

[0002] Baskets are common baby products. Babies under 6 months old are generally taken care of in a basket. After the baby is placed in the basket, the basket can be installed on the stroller frame and the stroller can be pushed or carried directly. However, the traditional basket frame structure is relatively complex and the volume is relatively large after folding. Moreover, after the traditional basket is installed on the stroller frame, the basket and the frame need to be unlocked separately when folding, that is, the basket must be unlocked and folded first, and then the frame must be unlocked and folded, making the stroller with a basket more troublesome to operate when folding.

[0003] Therefore, the present invention is just produced based on the above shortcomings. [Summary of the invention]

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

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

[0006] The present invention is achieved through the following technical solutions:

[0007] A basket frame can be moved from an unfolded state to a folded state after a locking device is unlocked, comprising a first support rod, a second support rod connected to the first support rod and capable of sliding up and down relative to the first support rod, a second connecting seat being provided at the upper end of the second support rod, a first supporting frame and a second supporting frame being rotatably connected on both sides of the second connecting seat, a first connecting seat being provided at the lower end of the first support rod, a first supporting frame and a second supporting frame being rotatably connected on both sides of the first connecting seat, when the first supporting frame and the second supporting frame are rotated and folded relative to the second connecting seat and brought closer to each other, the second support rod slides downward relative to the first support rod and the first supporting frame and the second supporting frame are rotated relative to the first connecting seat and brought closer to each other.

[0008] A first linkage member movably connected to the first support frame and the first support frame is provided between the first support frame and the first support frame, and a second linkage member movably connected to the second support frame and the second support frame is provided between the second support frame and the second support frame.

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

[0010] The first support frame or the second connecting seat is connected with a handle, the handle comprises a fixing seat fixed on the first support frame or the second connecting seat, the handle also comprises a U-shaped rod body and a rod body sleeve slidably connected to the rod body, the rod body sleeve is rotatably connected to the fixing seat, a clamping assembly for locking the two is provided between the rod body sleeve and the fixing seat, the clamping assembly comprises a clamping groove provided on the fixing seat and the rod body sleeve along the circumferential direction, a clamping piece which can move laterally and simultaneously engage with the clamping grooves on the fixing seat and the rod body sleeve is provided in the space enclosed by the fixing seat and the rod body sleeve, the clamping piece A sliding block is provided between the rod body sleeve and the rod body sleeve, which can slide radially and push the engaging piece to disengage from the engaging groove on the rod body sleeve when sliding. The rod body is provided with a pushing block that can push the sliding block to slide when it slides relative to the rod body sleeve. The sliding block is provided with a first inclined surface, and the rod body sleeve is provided with a second inclined surface that cooperates with the first inclined surface and can push the first inclined surface when the sliding block slides to make the engaging piece move laterally. A first return spring that can push the engaging piece to return to its original position laterally is provided between the engaging piece and the fixed seat, and a second return spring that can push the rod body to return to its original position after sliding is provided between the pushing block and the rod body sleeve.

[0011] The locking device includes a first locking assembly arranged between the first support frame and the second connecting seat, a first unlocking assembly for unlocking the first locking assembly is provided on the first support frame, a second locking assembly is provided between the second support frame and the second connecting seat, a second unlocking assembly is provided between the first support frame and the second locking assembly, which can drive the second locking assembly to unlock when the first support frame is rotated and folded relative to the second connecting seat, a third locking assembly is provided between the second support rod and the first support rod for locking the two, and a third unlocking assembly is provided in 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 arranged on the second connecting seat, a first locking rod that can slide relative to the first supporting frame and engage with or disengage from the first locking hole is arranged in the first supporting frame, a third reset spring that can push the first locking rod to slide and reset is also arranged between the first locking rod and the first supporting frame, the first unlocking assembly includes an unlocking seat fixed on the first supporting frame, an operating block is rotatably connected to the unlocking seat, a first pull rope that can pull the first locking rod to disengage from the first locking hole when the operating block rotates is arranged between the operating block and the first locking rod, a gap is formed between the operating block and the unlocking seat, a pressing block that can slide therein and engage in or disengage from the gap is arranged in the operating block, when the pressing block is in the gap, the pressing block prevents the operating block from rotating relative to the unlocking seat, when the pressing block is out of the gap, the pressing block makes way for the rotating action of the operating block, a button that can push the pressing block to disengage from the gap is arranged on the operating block, and a fourth reset spring that can push the pressing block to reset is arranged between the pressing block and the operating block.

[0013] The second locking assembly includes a second locking hole provided on the second connecting seat, a second locking rod is provided in the second supporting frame, which can slide relative to the second locking rod and engage or disengage with the second locking hole, a fifth reset spring is provided between the second locking rod and the second supporting frame, which can push the second locking rod to slide and return to its original position, a sliding groove is provided on the second connecting seat, and the second unlocking assembly includes a pushing rod that can slide in the sliding groove and can push the second locking rod out of the second locking hole when sliding, a driving wall is provided on the first supporting frame, which can push the pushing rod to slide when the first supporting frame is rotated and folded relative to the second connecting seat, and a sixth reset spring is provided between the pushing rod and the second connecting seat, which can push the pushing rod to slide and return to its original position.

[0014] The third unlocking member also includes a moving block which is arranged in the second connecting seat and can be driven by the pushing rod to move upward when the pushing rod pushes the second locking rod. A second pull rope connecting the two is provided between the moving block and the sliding seat, and an eighth return spring which can push the sliding seat to slide and return is provided between the third connecting seat and the sliding seat.

[0015] A stroller comprises a foldable frame, the frame comprises rear legs, the lower ends of the rear legs are provided with rear wheels a, the upper ends of the rear legs are provided with rear leg seats, the rear leg seats are rotatably connected to a first connecting piece, the first connecting piece is fixedly connected to a front leg, the lower ends of the front legs are provided with a front wheel b, the rear leg seats are also rotatably connected to a second connecting piece, the second connecting piece is fixedly connected to a push rod assembly, a locking assembly for locking the frame in an unfolded state is provided in the rear leg seats, the frame is also connected to a basket carrying frame as described in any one of claims 1 to 4, an unlocking portion is provided at the lower end of the second support rod, during the movement of the basket carrying frame from the unfolded state to the folded state, the second support rod slides and contracts relative to the first support rod so that the unlocking portion drives the locking assembly to unlock, and after the locking assembly is unlocked, the push rod assembly and the front legs can rotate relative to the rear leg seats and move closer to the rear legs.

[0016] A linkage piece is provided between the first connecting piece and the second connecting piece, which is hinged to the two 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 are rotated and folded relative to the rear leg seat. A connecting part is provided on the rear leg seat, and a clamping seat is provided at the lower end of the first support rod that is detachably engaged with the connecting part. The locking assembly includes a locking part provided on the second connecting piece, a clamping block is provided on the rear leg seat, which can slide relative to the rear leg seat and engage or disengage with the clamping part, and a ninth reset spring is provided between the clamping block and the rear leg seat to push the clamping block to slide and reset, and the clamping block is provided with a protruding block exposed to 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 so that the second support rod and the first support rod contract with each other, and the first support frame and the second support frame rotate downward relative to the first connecting seat and move closer to each other, finally realizing the overall folding of the basket frame, so that the basket frame has a small volume after folding, which is convenient for storage or carrying, and the structure of the entire basket frame is also very simple. After the cloth cover is connected to the basket frame, it can be used as a basket, and the baby is placed in the space surrounded by the cloth cover.

[0019] 2. A first linkage member movably connected to the first support frame and the first support frame of the basket frame of the present invention is provided between the first support frame and the first support frame, and a second linkage member movably connected to the second support frame is provided between the second support frame and the second support frame. The first linkage member and the second linkage member can apply a force to the first support frame and the second support frame when the basket frame is in the unfolded state, thereby enhancing the bearing capacity of the first support frame and the second support frame, making the basket frame more firm and reliable in the unfolded state.

[0020] 3. The stroller of the present invention has the aforementioned basket frame. After the cloth cover is connected to the basket frame, the frame can be pushed to take the baby out, such as visiting parks or shopping malls, and when the stroller needs to be folded, it is only necessary to fold the basket frame first. During the folding process of the basket frame, the second support rod slides relative to the first support rod and during the sliding process, the lower end of the second support rod pushes the locking assembly of the frame to unlock the locking assembly. Once the locking assembly is unlocked, the frame can be folded. Therefore, the unlocking operation of the frame is linked, thereby making the folding operation of the stroller more convenient and quick.

Brief Description of the Drawings

[0021] Figure 1 It is a three-dimensional diagram of the basket skeleton of the present invention;

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

[0023] Figure 3 It 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 is a cross-sectional view of the basket frame of the present invention;

[0027] Figure 7 yes Figure 6 Magnified view at 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] Fig. 9 This is the fifth exploded view of the components of the basket frame of the present invention;

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

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

[0032] Fig.12 is a perspective view of the cart of the present invention;

[0033] Fig.13 is a perspective view of components of the cart of the present invention;

[0034] Fig.14 is an exploded view of the components of the cart of the present invention;

[0035] Fig.15 It is one of the side views of the stroller of the present invention during the folding process;

[0036] Fig.16 This is the second side view of the stroller of the present invention during the folding process;

[0037] Fig.17 This is the third side view of the stroller of the present invention during the folding process. [Specific implementation method]

[0038] The present invention will be further described below in conjunction with the accompanying drawings:

[0039] like Figure 1 , Figure 2 , Figure 6 and Fig.12 As shown, a basket frame 10 can be moved from an expanded state to a folded state after the locking device is unlocked. After the cloth cover is connected to the basket frame 10, it can be used as a baby basket, and of course, it can also be used as a pet basket. In the expanded state, the baby or pet can be placed in the basket, and in the folded state, the user can conveniently carry or store the basket. The basket can also be installed on the foldable frame 7 for pushing the stroller for travel.

[0040] like Figure 1 , Figure 2 and Figure 6As shown, the basket frame 10 includes a first support rod 11, and the first support rod 11 is connected to a second support rod 12 that can slide up and down relative to the first support rod 11, and the second support rod 12 is provided with a second connecting seat 22 at the upper end, and the first support frame 31 and the second support frame 32 are rotatably connected on both sides of the second connecting seat 22, and the first support rod 11 is provided with a first connecting seat 21 at the lower end, and the first connecting seat 21 is rotatably connected on both sides of the first connecting seat 21. When the first support frame 31 and the second support frame 32 are rotated and folded relative to the second connecting seat 22 and approach 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 are rotated relative to the first connecting seat 21 and approach each other. When folding, 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 so that the second support rod 12 and the first support rod 11 contract with each other, and 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, finally realizing the overall folding of the basket frame 10, so that the basket frame is small in size after folding, easy to store or carry, and the entire basket frame structure is also very simple. In actual use, a cloth cover is connected 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 surrounded by the cloth cover, and the bottom is supported by the first support frame 41 and the second support frame 42. The upper end of the flexible cloth cover is connected to the first support frame 31 and the second support frame 32, and can apply an upward pulling force to the first support frame 41 and the second support frame 42, so that the first support frame 41 and the second support frame 42 of the basket have supporting capabilities.

[0041] like Figure 1 , Figure 2 and Figures 12 to 15 As shown, a first linkage member 51 movably connected to the first support frame 31 and the first support frame 41 is provided between the first support frame 31 and the first support frame 41, and a second linkage member 52 movably connected to the second support frame 42 is provided between the second support frame 32 and the second support frame 42. 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 in the unfolded state of the basket, so that the first support frame 41 and the second support frame 42 do not only rely on the pulling of the cloth cover, but can enhance the bearing capacity of the first support frame 41 and the second support frame 42, so that the basket frame is more solid and reliable in the unfolded state. Moreover, 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, so as to realize linkage folding, and the folding of the entire basket frame is also convenient and quick.

[0042] like Figure 1 , Figure 2 and Figures 12 to 15 As shown, the first linkage member 51 includes a U-shaped first linkage rod 511, the upper end of the first linkage rod 511 is hinged to the first support frame 31, and the lower end of the first linkage rod 511 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 the second linkage rod 521 is hinged to the second support frame 32, and the lower end of the second linkage rod 521 is hinged to the second support frame 42. When the basket frame is folded, the second support rod 12 slides downward and shrinks 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 be close to each other, which also makes the basket frame easy to fold and has a small volume after folding.

[0043] like Figures 1 to 3As shown, a handle 33 is connected to the first support frame 31 or the second connection seat 22, which can facilitate the user to carry the basket. The handle 33 includes a fixed seat 331 fixed on the first support frame 31 or the second connection seat 22, and 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, and a clamping assembly for locking the two is provided between the rod sleeve 333 and the fixed seat 331. The clamping assembly includes a clamping groove 341 provided on the fixed seat 331 and the rod sleeve 333 along the circumferential direction. A clamping member 342 that can move laterally and simultaneously engage with the clamping groove 341 on the fixed seat 331 and the rod sleeve 333 is provided in the space enclosed by the fixed seat 331 and the rod sleeve 333. A clamping member 342 that can slide radially between the clamping member 342 and the rod sleeve 333 is provided. The sliding block 343 can push the engaging piece 342 to disengage from the engaging groove 341 on the rod body sleeve 333 when sliding. The rod body 332 is provided with a pushing block 344 that can push the sliding block 343 to slide when it slides relative to the rod body sleeve 333. The sliding block 343 is provided with a first inclined surface 345. The rod body 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 when the sliding block 343 slides to make the engaging piece 342 move laterally. A first return spring 347 that can push the engaging piece 342 to return to its original position laterally is provided between the engaging piece 342 and the fixed seat 331, and a second return spring 348 that can push the rod body 332 to return to its original position by sliding is provided between the pushing block 344 and the rod body sleeve 333. When the basket frame needs to be folded, the rod body 332 is pushed downward, and the push block 344 pushes the sliding block 343. When the sliding block 343 slides, the first inclined surface 345 and the second inclined surface 346 cooperate to make the sliding block 343 laterally push the engaging member 342 to disengage from the engaging groove 341 on the rod body sleeve 333. At this time, the rod body 332 and the rod body sleeve 333 can be rotated to fold the handle 33.

[0044] like Figures 4 to 11As shown, the locking device includes a first locking component 61 arranged between the first support frame 31 and the second connecting seat 22, a first unlocking component 62 for unlocking the first locking component 61 is provided on the first support frame 31, a second locking component 63 is provided between the second support frame 32 and the second connecting seat 22, a second unlocking component 64 is provided between the first support frame 31 and the second locking component 63, which can drive the second locking component 63 to unlock when the first support frame 31 is rotated and folded relative to the second connecting seat 22, a third locking component 65 is provided between the second support rod 12 and the first support rod 11 for locking the two, and a third unlocking component 66 is provided in the second connecting seat 22, which can be driven by the second unlocking component 64 to unlock the third locking component 65 when the second unlocking component 64 unlocks the second locking component 63. In this embodiment, the first unlocking assembly 62 is used to unlock the first locking assembly 61. After the first locking assembly 61 is unlocked and the first support frame 31 is rotated and folded relative to the second connecting seat 22, the second unlocking assembly 64 drives the third locking assembly 63 to unlock, so that the second support frame 32 can be rotated and folded relative to the second connecting seat 22, and when the second unlocking assembly 64 drives the third locking assembly 63 to unlock, the third unlocking assembly 66 is driven by the second unlocking assembly 64 to move, and the third unlocking assembly 66 drives the third locking assembly 65 to unlock, so that the second support rod 12 can slide and shrink 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 in the figure) provided on the second connecting seat 22, a first locking rod 611 is provided in the first supporting frame 31 and can slide relative to the first locking rod 611 and engage with or disengage from the first locking hole, a third reset spring 612 is also provided between the first locking rod 611 and the first supporting frame 31 and can push the first locking rod 611 to slide and reset, the first unlocking assembly 62 includes an unlocking seat 621 fixed on the first supporting frame 31, an operating block 622 is rotatably connected to the unlocking seat 621, and a spring is provided between the operating block 622 and the first locking rod 611 and can pull the first locking rod 611 to disengage from the first locking hole when the operating block 622 rotates. A first pull rope 623 is formed between the operating block 622 and the unlocking seat 621, and a pressure block 625 is provided in the operating block 622, which can slide therein and get in or out of the pressure block 624. When the pressure block 625 is in the pressure block 624, the pressure block 625 prevents the operating block 622 from rotating relative to the unlocking seat 621. When the pressure block 625 is out of the pressure block 624, the pressure block 625 makes room for the rotation of the operating block 622. The operating block 622 is provided with a button 626 that can push the pressure block 625 out of the pressure block 624, and a fourth reset spring 627 that can push the pressure block 625 to reset is provided between the pressure block 625 and the operating block 622. When the basket frame 10 is in the unfolded state, the first locking rod 611 is inserted into the first locking hole. When the basket frame needs to be folded, the button 626 is pressed first, and the button 626 pushes the pressing block 625 to exit the gap 624 between the unlocking seat 621 and the operating block 622. Once the pressing block 625 exits the gap 624, the operating block 622 can rotate relative to the unlocking seat 621. During the rotation process, the first locking rod 611 is pulled out of the first locking hole by the first pull rope 623. At this time, the first locking assembly 61 is unlocked, and the first support frame 31 can be rotated and folded relative to the second connecting seat 22. The setting of the pressing block 625 and the gap 624 plays the role of a second lock, which can prevent the misoperation of the operating block 622 from causing a mislock. Therefore, the operating block 622 can be rotated only after the button 626 is pressed, which ensures safety. The button 626 and the pressing block 625 can be matched with each other by means of inclined surfaces. When the button 626 is pressed, the inclined surface pushes the pressing block 625 away from the gap 624 .

[0046] like Fig. 9 and Fig.10As shown, the second locking assembly 63 includes a second locking hole 631 provided on the second connecting seat 22, a second locking rod 632 is provided in the second supporting frame 32, which can slide relative to it and engage or disengage with the second locking hole 631, a fifth reset spring 633 is provided between the second locking rod 632 and the second supporting frame 32, which can push the second locking rod 632 to slide and return to its original position, a sliding groove 221 is provided on the second connecting seat 22, and the second unlocking assembly 64 includes a pushing rod 641 that can slide in the sliding groove 221 and can push the second locking rod 632 out of the second locking hole 631 when sliding, a driving wall 642 is provided on the first supporting frame 31, which can push the pushing rod 641 to slide when it is rotated and folded relative to the second connecting seat 22, and a sixth reset spring 643 is provided between the pushing rod 641 and the second connecting seat 22, which can push the pushing rod 641 to slide and return 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. When the first locking assembly 61 is unlocked and the first support frame 31 is rotated and folded, the driving 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 to exit 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 in the first support rod 11 and a third connecting seat 122 fixed in the rod body 121, the third connecting seat 122 is provided with a locking block 652 that can move laterally therein and can pass through the side wall of the second support rod 12 to engage with or disengage from the third locking hole 651, the third connecting seat 122 is also provided with a seventh reset spring 653 that can push the locking block 652 to slide and reset, and the third unlocking assembly 66 includes The third unlocking member 661 also includes a moving block 662 which is arranged in the second connecting seat 22 and can be driven by the pushing rod 641 to move upward when the pushing rod 641 pushes the second locking rod 632. A second pull rope 663 connecting the moving block 662 and the sliding seat 661 is provided between the moving block 662 and the sliding seat 661. An eighth reset spring 664 which can push the sliding seat 661 to slide and reset is also provided between the third connecting seat 122 and the sliding seat 661. When the basket frame 10 is in the unfolded state, the locking block 652 is locked into the third locking hole 651. When the first support frame 31 rotates and drives the second unlocking assembly 64 to move, the sliding push rod 641 pushes the moving block 662 to move upward, and the moving block 662 pulls the sliding seat 661 to move upward through the second pull rope 663, and the sliding seat 661 drives the locking block 652 to disengage from the third locking hole 651, thereby unlocking the third locking assembly 65. The sliding seat 661 and the driving block 652 can adopt inclined contact cooperation, so that the vertical movement of the sliding seat 661 can be converted into the lateral movement of the locking block 652. For the same reason, the pushing rod 641 and the moving block 662 can also adopt inclined contact cooperation. Therefore, when the first support frame 31 rotates and pushes the pushing rod 641 to slide, the second locking assembly 63 and the third locking assembly 65 are unlocked at the same time, making the folding operation of the basket frame 10 very convenient and quick.

[0048] like Figure 1 , Figures 12 to 17As shown, a cart comprises a foldable frame 7, wherein the frame 7 comprises rear legs 71, wherein the lower end of the rear legs 71 is provided with rear wheels 7a, and the upper end of the rear legs 71 is provided with rear leg seats 72, wherein the rear leg seats 72 are rotatably connected with a first connecting piece 73, wherein the first connecting piece 73 is fixedly connected with a front leg 74, wherein the lower end of the front leg 74 is provided with a front wheel 7b, wherein the rear leg seats 72 are also rotatably connected with a second connecting piece 75, wherein the second connecting piece 75 is fixedly connected with a push rod assembly 76, wherein the rear leg seats 72 are provided with a push rod assembly 76 for locking the frame 7 The locking assembly 8 is fixed in the unfolded state, and the frame 7 is also connected to the aforementioned basket frame 10, and the lower end of the second support rod 12 is provided with an unlocking portion 14. In this embodiment, the unlocking portion 14 is the lower end of the third connecting seat 122. When the basket frame 10 moves from the unfolded state to the folded state, the second support rod 12 slides and contracts relative to the first support rod 11, so that the unlocking portion 14 drives the locking assembly 8 to unlock, and 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. The stroller of this embodiment has the aforementioned basket frame 10. After the cloth cover is connected to the basket frame 10, the frame 7 can be pushed to take the baby out, such as visiting parks or shopping malls. When the stroller needs to be folded, it is only necessary to fold the basket frame 10 first. During the folding process of the basket frame 10, the second support rod 12 slides relative to the first support rod 11 and during the sliding process, the unlocking portion 14 at the lower end of the second support rod 12 pushes the locking assembly 8 of the frame 7 to unlock the locking assembly 8. Once the locking assembly 8 is unlocked, the frame 7 can be folded. Therefore, the unlocking operation of the frame 7 is linked. The frame 7 can be unlocked by folding the basket frame 10, thereby making the folding operation of the stroller more convenient and quick.

[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 the two 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 are rotated and folded relative to the rear leg seat 72. The rear leg seat 72 is provided with a connecting portion 78, and the lower end of the first support rod 11 is provided with a connecting seat 13 that is detachably engaged with the connecting portion 78. The locking assembly 8 includes a locking portion 81 provided on the second connecting piece 75, and a blocking block 82 is provided on the rear leg seat 72, which can slide relative to it and engage or disengage with the blocking portion 81. A ninth reset spring 83 is provided between the blocking block 82 and the rear leg seat 72, which can push the blocking block 82 to slide and reset. The blocking block 82 is provided with a protruding block 84 exposed to the rear leg seat 72 and can be pushed by the unlocking portion 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 portion 14 at the lower end of the second support rod 12 pushes the protruding block 84, causing the blocking block 82 to slide, and the blocking block 82 is disengaged from the locking portion 81. At this time, the locking assembly 8 is unlocked, and the push rod assembly 76 can be pulled backward to rotate relative to the rear leg seat 72. During the process of the push rod assembly 76 rotating and approaching 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 approach the rear leg 71, thereby realizing the stroller folding operation.

[0050] When the entire cart needs to be folded, it is only necessary to press the button 626 and rotate the operating block 622 to unlock the first locking assembly 61. The first support frame 31 unlocks the second locking assembly 63 and the third locking assembly 65 during the rotation and folding process. The second support frame 32 rotates and folds, and the second support rod 12 slides and contracts relative to the first support rod 11. During the sliding process, the lower end of the second support rod 12 pushes the protruding block 84 to unlock the locking assembly 8 of the frame 7, and then the push rod assembly 76 is rotated to realize the folding of the frame 7. The folding operation of the entire cart is very convenient and quick.

[0051] The present embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A basket frame (10) capable of moving from an unfolded state to a folded state after a locking device is unlocked, characterized in that: The invention comprises a first support rod (11), the first support rod (11) is connected to a second support rod (12) which can slide up and down relative to the first support rod (11), 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 the first support frame (31) and the second support frame (32), the lower end of the first support rod (11) is provided with a first connecting seat (21), the two sides of the first connecting seat (21) are rotatably connected to the first support frame (41) and the second support frame (42), when the first support frame (31) and the second support frame (32) are rotated and folded relative to the second connecting seat (22) and approach 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) are rotated relative to the first connecting seat (21) and approach each other.

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

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 the first linkage rod (511) is hinged to the first support frame (31), and the lower end of the first linkage rod (511) 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 the second linkage rod (521) is hinged to the second support frame (32), and the lower end of the second linkage rod (521) is hinged to the second support frame (42).

4. The basket frame (10) according to claim 1, characterized in that: The first support frame (31) or the second connecting seat (22) is connected to a handle (33), the handle (33) comprising a fixing seat (331) fixed on the first support frame (31) or the second connecting seat (22), the handle (33) further comprising a U-shaped rod (332) and a rod sleeve (333) slidably connected to the rod (332), the rod sleeve (333) being rotatably connected to the fixing seat (331), the rod sleeve (333) A snap-fit ​​assembly for locking the two is provided between the fixing seat (331), the snap-fit ​​assembly comprising a snap-fit ​​groove (341) provided on the fixing seat (331) and the rod body sleeve (333) along the circumferential direction, a snap-fit ​​piece (342) capable of moving laterally and snap-fitting with the snap-fit ​​groove (341) on the fixing seat (331) and the rod body sleeve (333) at the same time is provided in the space enclosed by the fixing seat (331) and the rod body sleeve (333), the snap-fit ​​piece (342) being capable of moving laterally and snap-fitting with the snap-fit ​​groove (341) on the fixing seat (331) and the rod body sleeve (333) at the same time, A sliding block (343) is provided between the sleeve (333) and is capable of radially sliding and can push the engaging member (342) to disengage from the engaging groove (341) on the rod body sleeve (333) when sliding. The rod body (332) is provided with a pushing block (344) that can push the sliding block (343) to slide when it slides relative to the rod body sleeve (333). The sliding block (343) is provided with a first inclined surface (345). The rod body sleeve (333) is provided with a first inclined surface (345) that is aligned with the first inclined surface ( A second inclined surface (346) is provided between the locking member (342) and the fixing seat (331) and is capable of pushing the first inclined surface (345) to move the locking member (342) laterally when the sliding block (343) slides. A first return spring (347) is provided between the locking member (342) and the fixing seat (331) and is capable of pushing the locking member (342) to return to its original position laterally. A second return spring (348) is provided between the pushing block (344) and the rod body sleeve (333) and is capable of pushing the rod body (332) to return to its original position by sliding.

5. The basket frame (10) according to claim 1, characterized in that: The locking device comprises a first locking assembly (61) provided between the first support frame (31) and the second connecting seat (22); a first unlocking assembly (62) for unlocking the first locking assembly (61) is provided on the first support frame (31); 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) and can drive the second locking assembly (63) to unlock when the first support frame (31) is rotated and folded relative to the second connecting seat (22); a third locking assembly (65) is provided between the second support rod (12) and the first support rod (11) and can lock the two; and a third unlocking assembly (66) is provided in the second connecting seat (22) and 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).

6. The basket frame (10) according to claim 5, characterized in that: The first locking assembly (61) includes a first locking hole provided on the second connecting seat (22); a first locking rod (611) is provided in the first supporting frame (31) and can slide relative to the first locking rod to engage with or disengage from the first locking hole; a third reset spring (612) is provided between the first locking rod (611) and the first supporting frame (31) and can push the first locking rod (611) to slide and reset; the first unlocking assembly (62) includes an unlocking seat (621) fixed on the first supporting 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) and can pull the first locking rod (611) to disengage 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). A pressing block (625) is provided in the operating block (622) and can slide in the operating block (622) and be engaged in or disengaged 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) is disengaged from the gap (624), the pressing block (625) makes way for the rotating action of the operating block (622). A button (626) is provided on the operating block (622) and can push the pressing block (625) to disengage from the gap (624). A fourth reset spring (627) is provided between the pressing block (625) and the operating block (622) and can push the pressing block (625) to reset.

7. The basket frame (10) according to claim 5, characterized in that: The second locking assembly (63) includes a second locking hole (631) provided on the second connecting seat (22), a second locking rod (632) is provided in the second supporting frame (32) and can slide relative to the second locking hole (631) to engage or disengage, a fifth reset spring (633) is provided between the second locking rod (632) and the second supporting frame (32) and can push the second locking rod (632) to slide and reset, and a sliding groove (633) is provided on the second connecting seat (22) and communicates with the second locking hole (631). 221), the second unlocking component (64) includes a push rod (641) that can slide in the slide groove (221) and can push the second locking rod (632) out of the second locking hole (631) when sliding, and the first support frame (31) is provided with a driving wall (642) that can push the push rod (641) to slide when it is rotated and folded relative to the second connecting seat (22), and a sixth reset spring (643) that can push the push rod (641) to slide and reset is provided between the push rod (641) and the second connecting seat (22).

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

9. A cart, characterized in that: The invention comprises a foldable frame (7), wherein the frame (7) comprises rear legs (71), the lower end of the rear legs (71) is provided with a rear wheel (7a), the upper end of the rear legs (71) is provided with a rear leg seat (72), the rear leg seat (72) is rotatably connected to a first connecting piece (73), the first connecting piece (73) is fixedly connected to a front leg (74), the lower end of the front leg (74) is provided with a front wheel (7b), the rear leg seat (72) is also rotatably connected to a second connecting piece (75), the second connecting piece (75) is fixedly connected to a push rod assembly (76), and the rear leg seat (72) is provided with a push rod assembly (76) for A locking assembly (8) for locking the frame (7) in the unfolded state, the frame (7) is further connected to a basket frame (10) as described in any one of claims 1 to 8, and an unlocking portion (14) is provided at the lower end of the second support rod (12). When the basket frame (10) moves from the unfolded state to the folded state, the second support rod (12) slides and contracts relative to the first support rod (11), so that the unlocking portion (14) drives the locking assembly (8) to unlock, and 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).

10. The stroller according to claim 9, 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 the two 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) are rotated and folded relative to the rear leg seat (72). A connecting portion (78) is provided on the rear leg seat (72). The lower end of the first support rod (11) is provided with a card seat (13) that is detachably connected to the connecting portion (78). The locking assembly The component (8) includes a locking portion (81) provided on the second connecting piece (75); a block (82) is provided on the rear leg seat (72) and can slide relative to the rear leg seat to engage with or disengage the locking portion (81); a ninth return spring (83) is provided between the block (82) and the rear leg seat (72) and can push the block (82) to slide and return; and a protruding block (84) is provided on the block (82) and is exposed on the rear leg seat (72) and can be pushed by the lower end of the unlocking portion (14) when the basket frame (10) is folded.

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