A basket framework and infant carrier

Abstract

This invention discloses a basket frame with a lower left frame rotatably connected to the left side of the middle frame and a lower right frame rotatably connected to the right side. The upper end of a left linkage rod is rotatably connected to the upper left frame, and the lower end is rotatably connected to the left side of the middle frame. The upper end of a right linkage rod is rotatably connected to the upper right frame, and the lower end is rotatably connected to the right side of the middle frame. A left sliding sleeve is provided on the left linkage rod, and a first left connecting rod is provided between the left sliding sleeve and the lower left frame. A second left connecting rod is provided between the left sliding sleeve and the right linkage rod. A right sliding sleeve is provided on the right linkage rod, and a first right connecting rod is provided between the right sliding sleeve and the lower right frame. A second right connecting rod is also provided between the right sliding sleeve and the left linkage rod. When the upper left and upper right frames rotate relative to each other at their connection point and move closer to the middle frame, the lower left and lower right frames rotate and move closer to the middle frame. This invention also discloses an infant carrier using the aforementioned basket frame. This invention is easy to fold, has strong load-bearing capacity, and has a small folded size.

Description

Technical Field

[0001] This invention relates to a basket frame. It also relates to an infant carrier. Background Technology

[0002] Baskets are common products in daily life. Examples include baby baskets and pet baskets. A basket typically consists of a basket frame and a fabric cover that fits over the frame.

[0003] Chinese Patent Publication No. (CN221214076U) discloses a basket whose frame includes an upper support and a base. The upper support is connected to multiple support rods that can rotate and unfold or fold relative to it, and the base has latches for the support rods to engage when unfolded. However, this type of basket frame has the following shortcomings: First, the load-bearing capacity is low because the unfolded basket is supported by two U-shaped support rods; second, when folding the basket, it is inconvenient to use fingers to pry the lower ends of the support rods out of the latches; and third, the basket can only be folded vertically, and its volume remains relatively large after folding.

[0004] Therefore, the present invention was developed in response to the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a basket frame that is simple in structure, easy to fold, has strong load-bearing capacity, and has a small volume after folding.

[0006] The present invention also provides an infant carrier using the aforementioned basket frame. This infant carrier has a simple structure, is easy to fold, has strong load-bearing capacity, and is small in size when folded.

[0007] This invention is achieved through the following technical solution:

[0008] A basket frame, movable from an unfolded position to a folded position after the locking device is unlocked, includes an upper frame, a lower frame, and a linkage assembly disposed between the two. The upper frame includes an upper left frame and an upper right frame rotatably connected to the upper left frame. The lower frame includes a middle frame, with the lower left frame rotatably connected to the left side of the middle frame and the lower right frame rotatably connected to the right side of the middle frame. The linkage assembly includes a left linkage rod and a right linkage rod. The upper end of the left linkage rod is rotatably connected to the upper left frame, and the lower end of the left linkage rod is rotatably connected to the left side of the middle frame. The upper end of the right linkage rod is rotatably connected to the upper right frame, and the lower end of the right linkage rod is rotatably connected to the right side of the middle frame. The linkage is dynamically connected. The left linkage rod is provided with a left sliding sleeve that can slide along it. There is a first left connecting rod that is rotatably connected to the left lower frame and the left sliding sleeve. There is also a second left connecting rod that is rotatably connected to the left sliding sleeve and the right linkage rod. The right linkage rod is provided with a right sliding sleeve that can slide along it. There is a first right connecting rod that is rotatably connected to the right lower frame and the right sliding sleeve. There is also a second right connecting rod that is rotatably connected to the right sliding sleeve and the left linkage rod. When the upper left frame and the upper right frame rotate relative to each other at the contact position and move closer to the middle frame, the linkage component drives the lower left frame and the lower right frame to rotate and move closer to the middle frame.

[0009] The second left link includes an upper left section and a lower left section that is bent relative to the upper left section. The upper end of the upper left section is rotatably connected to the left sliding sleeve, and the lower left section is rotatably connected to the right linkage rod. The second right link includes an upper right section and a lower right section that is bent relative to the upper right section. The upper end of the upper right section is rotatably connected to the right sliding sleeve, and the lower right section is rotatably connected to the left linkage rod.

[0010] The middle frame is also connected to a connecting component that can install the basket frame onto the foldable frame. The connecting component includes a connecting seat that is fixedly connected to the middle frame. A locking seat that can be snapped onto the foldable frame is rotatably connected to the connecting seat. A locking component that can lock the two is provided between the connecting seat and the locking seat. An unlocking component that can drive the locking component to unlock is provided inside the connecting seat. A driving component that can drive the unlocking component to move and unlock the locking component when the two rotate and come closer to each other is connected to the left and right linkage rods.

[0011] The driving component includes a left driving rod and a right driving rod. The upper end of the left driving rod is rotatably connected to the left linkage rod, and the upper end of the right driving rod is rotatably connected to the right linkage rod. The lower ends of the left driving rod and the lower ends of the right driving rod are movably connected to the unlocking component, so that when the left linkage rod and the right linkage rod rotate and move closer to each other, the lower ends of the left driving rod and the right driving rod drive the unlocking component to move downward relative to the intermediate frame, thereby pushing the locking assembly to unlock.

[0012] The unlocking component includes a sliding block, which is rotatably connected to the lower ends of the left and right drive rods via a connecting pin. The intermediate frame is provided with a longitudinal groove for the connecting pin to slide up and down.

[0013] The locking assembly includes a first locking groove on the connecting seat, a second locking groove on the locking seat, a locking block that can simultaneously engage with the first and second locking grooves slidably between the connecting seat and the locking seat, an unlocking member that is connected to the locking block and can push the locking block out of the first locking groove, and a first reset spring that can push the locking block to slide back to its original position between the locking block and the locking seat.

[0014] The unlocking component also includes a movable block that contacts and engages with the inclined surface of the sliding block. The movable block is provided with a push post. When the sliding block moves downward, the sliding block pushes the movable block to move laterally so that the push post on the movable block pushes the locking block out of the first locking groove.

[0015] A trigger is movably mounted on the connecting seat. When the basket frame is folded, the trigger rotates with the connecting seat relative to the snap-fit ​​seat, which can trigger the unlock button on the foldable frame to move, thereby unlocking the foldable frame. The trigger includes a trigger block that is slidably mounted on the connecting seat and exposed. There is an elastic element between the trigger block and the connecting seat that can push the trigger block to slide back to its original position. The outer end of the trigger block has a pushing surface that can push the unlock button to move when the connecting seat rotates.

[0016] The lower end of the left linkage rod is provided with a left extension that can rotate with it relative to the lower left frame, and the lower end of the right linkage rod is provided with a right extension that can rotate with it relative to the lower right frame. When the basket frame is in the unfolded state, the left and right extensions move to the lower side of the lower frame and can be supported on the ground.

[0017] An infant carrier includes a foldable frame, which includes rear legs and front legs and a push rod assembly rotatably connected to the rear legs. Wheels are provided at the lower ends of both the front and rear legs. A fixed seat is provided on the foldable frame, and a basket frame as described above is connected to the fixed seat. A snap-fit ​​seat is detachably connected to the fixed seat. The fixed seat has a snap-fit ​​groove, and a sliding block is slidably disposed within the snap-fit ​​seat. One end of the sliding block has a hook that can engage or disengage from the snap-fit ​​groove, and the hook has an inclined surface. The other end of the sliding block has an operating part exposed outside the snap-fit ​​seat. A fifth return spring is provided between the snap-fit ​​seat and the sliding block to push the sliding block back to its original position. A positioning groove is provided at the upper end of the fixed seat, and a positioning block that can engage or disengage from the positioning groove is slidably disposed within the sliding block. A sixth return spring is provided between the positioning block and the sliding block to push the positioning block back to its original position. When the positioning block engages with the positioning groove, the hook remains disengaged from the snap-fit ​​groove. The positioning block has an inclined wall that can press against the edge of the positioning groove to disengage the positioning block from the positioning groove.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The upper left and upper right frames of the present invention can rotate relative to each other to unfold or fold. When unfolding or folding, the lower left and lower right frames can be driven to rotate relative to the middle frame through the linkage component, so that the lower left and lower right frames can also unfold or fold, realizing the linkage between the upper and lower frames. This ensures that the basket frame is easy to fold, and the basket frame is reduced in size in both the height and length directions after folding, ensuring that the folded volume is small and easy to carry or store. Specifically, when the upper left and upper right frames rotate relative to each other and move closer to the middle frame, they approach each other. The upper left frame drives the left linkage rod to move, and the upper right frame drives the right linkage rod to move. The movement of the left and right linkage rods causes the left and right sliding sleeves to slide. The sliding left sliding sleeve drives the lower left frame to rotate relative to the middle frame via the first left connecting rod, and the sliding right sliding sleeve drives the lower right frame to rotate relative to the middle frame via the first right connecting rod. Furthermore, the second left connecting rod rotates relative to the left sliding sleeve and the right linkage rod, and the second right connecting rod rotates relative to the right sliding sleeve and the left linkage rod, ensuring that the lower left and lower right frames rotate synchronously and move closer to each other, ultimately achieving the folding of the basket frame. The linkage components not only play a role in linking the unfolding or folding movements, but also provide support when the basket frame is unfolded, possessing sufficient support strength, making the basket frame strong in load-bearing capacity and structurally stable.

[0020] 2. The infant carrier of the present invention includes a foldable frame and the aforementioned basket skeleton. When the infant carrier is folded, the basket skeleton is folded first. During the folding process, the lower ends of the left and right drive rods drive the unlocking mechanism to move, thereby unlocking the locking assembly between the connecting seat and the locking seat. During the folding process, the upper and lower frames and the linkage assembly of the basket skeleton in the folded state also rotate relative to the locking seat locked on the foldable frame. During the rotation of the connecting seat, the trigger on the connecting seat triggers the unlocking button on the foldable frame to move, thereby unlocking the foldable frame and completing the folding process. Therefore, during the folding process of the basket skeleton, the user's own folding action also drives the foldable frame to unlock, so that the user does not need to operate the unlocking button of the foldable frame separately, ensuring that the infant carrier is convenient and quick to fold, and has a small folded size.

[0021] 3. The basket frame and infant carrier of this invention have a simple structure, strong load-bearing capacity, are easy and quick to fold, and occupy little space after folding, making them suitable for widespread application. Attached Figure Description

[0022] Figure 1 This is a perspective view of embodiment 1 of the basket frame of the present invention;

[0023] Figure 2 This is a side view of embodiment 1 of the basket frame of the present invention;

[0024] Figure 3This is a side view of the basket frame embodiment 1 of the present invention during folding;

[0025] Figure 4 This is a perspective view of the basket frame of Embodiment 1 of the present invention during the folding process;

[0026] Figure 5 This is a side view of the basket frame embodiment 1 of the present invention in the folded position;

[0027] Figure 6 This is a perspective view of embodiment 2 of the basket frame of the present invention;

[0028] Figure 7 This is a side view of the basket frame embodiment 2 of the present invention during folding;

[0029] Figure 8 This is a side view of the basket frame embodiment 2 of the present invention in the folded position;

[0030] Figure 9 This is one of the exploded views of the components of Embodiment 2 of the basket frame of the present invention;

[0031] Figure 10 This is the second exploded view of the components of the basket frame embodiment 2 of the present invention;

[0032] Figure 11 This is the third exploded view of the components of the basket frame embodiment 2 of the present invention;

[0033] Figure 12 This is the fourth exploded view of the components of the basket frame embodiment 2 of the present invention;

[0034] Figure 13 This is the fifth exploded view of the components of the basket frame embodiment 2 of the present invention;

[0035] Figure 14 This is the sixth exploded view of the components of the basket frame embodiment 2 of the present invention;

[0036] Figure 15 This is a perspective view of the foldable frame of the infant carrier of the present invention;

[0037] Figure 16 This is a side view of the infant carrier of the present invention in its unfolded state;

[0038] Figure 17 This is a side view of the infant carrier of the present invention during the folding process;

[0039] Figure 18 This is a side view of the infant carrier of the present invention in a folded state. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings:

[0041] Basket frame example 1:

[0042] refer to Figures 1 to 5 This embodiment provides a foldable basket frame 100. After the locking device is unlocked, the basket frame 100 can be extended from its unfolded use position (e.g., Figure 1 (As shown) Move to the folded storage position (such as) Figure 5 (As shown). The basket frame 100 mainly includes an upper frame 1, a lower frame 2, and a linkage component 3 disposed between the two for synchronous folding.

[0043] like Figures 1 to 5 As shown, the upper frame 1 includes a left upper frame 11 and a right upper frame 12. The left upper frame 11 and the right upper frame 12 are rotatably connected at their joints via hinges or pivots, allowing them to open and close relative to each other. The lower frame 2 mainly includes a central frame 21. The left lower frame 22 is rotatably connected to the left side of the central frame 21 via a pivot, and the right lower frame 23 is also rotatably connected to its right side via a pivot. The linkage component 3 is the core component for the synchronous and smooth folding of the basket frame. It includes a left linkage rod 31 and a right linkage rod 32. The upper end of the left linkage rod 31 is rotatably connected to the left upper frame 11, and the lower end is rotatably connected to the left side of the central frame 21. The upper end of the right linkage rod 32 is rotatably connected to the right upper frame 12, and the lower end is rotatably connected to the right side of the central frame 21. To achieve linkage between the left and right sides, a left sliding sleeve 33 that can slide along the rod body is fitted onto the left linkage rod 31. A first left connecting rod 34 is provided between the left sliding sleeve 33 and the lower left frame 22, and a second left connecting rod 35 is also provided between the left sliding sleeve 33 and the right linkage rod 32, and is rotatably connected to both. Similarly, a right sliding sleeve 36 is fitted onto the right linkage rod 32, which can slide along its body. A first right connecting rod 37 is provided between the right sliding sleeve 36 and the lower right frame 23, and a second right connecting rod 38 is also provided between the right sliding sleeve 36 and the left linkage rod 31, and is rotatably connected to both.

[0044] like Figures 3 to 5As shown, when the user unlocks the locking device, the upper left frame 11 and the upper right frame 12 can be brought together towards the center (i.e., the upper left frame 11 and the upper right frame 12 rotate relative to each other and move closer to the central frame 21). At this time, the upper left frame 11 and the upper right frame 12 respectively drive the upper ends of the left linkage rod 31 and the right linkage rod 32 to move. Since the lower ends of the left and right linkage rods 31 and 32 are hinged to the central frame 21, their movement will drive them to rotate and retract inward. During this process, the rotation and movement of the left linkage rod 31 will be transmitted to the right sliding sleeve 36 through the second right connecting rod 38, while the rotation and movement of the right linkage rod 32 will be transmitted to the left sliding sleeve 33 through the second left connecting rod 35. The left and right sliding sleeves 33 and 36 then slide on the corresponding left and right linkage rods 31 and 32. The sliding of the left and right sliding sleeves 33 and 36 allows the first left connecting rod 34 and the first right connecting rod 37 to pull the lower left frame 22 and the lower right frame 23 respectively, causing them to rotate inward and retract around their respective connection points with the middle frame 21. The entire linkage assembly 3 constitutes a precise motion transmission system, ensuring that the folding action of the upper frame 1 can automatically and synchronously drive the folding of the left and right lower frames 22 and 23 of the lower frame 2. The user only needs to operate the upper frame 1 to complete the folding of the entire basket frame. The steps are simplified and the operation is extremely convenient. The folded state is compact and occupies little space. Moreover, the entire basket frame is connected to the upper frame 1 and the lower frame 2 through the linkage assembly 3, and its load-bearing capacity is also very strong.

[0045] like Figures 1 to 5 As shown, the second left connecting rod 35 is further designed in a bent shape, including an upper left section 351 and a lower left section 352. The upper end of the upper left section 351 is rotatably connected to the left sliding sleeve 33, and the lower left section 352 is rotatably connected to the right linkage rod 32. Similarly, the second right connecting rod 38 also includes an upper right section 381 and a lower right section 382. The upper end of the upper right section 381 is rotatably connected to the right sliding sleeve 36, and the lower right section 382 is rotatably connected to the left linkage rod 31. This bent connecting rod design provides greater freedom for the movement of multiple rods in complex spaces, effectively avoids motion interference, makes the folding process smoother, and enhances the reliability and durability of the structure.

[0046] Basket frame example 2:

[0047] like Figures 6 to 12 ,as well as Figure 15 and Figure 16As shown, the difference between Embodiment 2 and Embodiment 1 is that the basket frame in this embodiment has a connecting component 5 on the intermediate frame 21, so that the basket can be easily installed onto the foldable frame 4 of the infant carrier via the connecting component 5. The connecting component 5 includes a connecting seat 51 fixedly connected to the intermediate frame 21. A snap-fit ​​seat 52 is rotatably connected to the connecting seat 51 via a pivot, and the snap-fit ​​seat 52 is used to snap onto the fixed seat 45 of the foldable frame 4. A locking component 53 is provided between the connecting seat 51 and the snap-fit ​​seat 52 to lock their relative rotation. The specific structure of the locking component 53 is as follows: a first locking groove 531 is provided on the connecting seat 51, and a second locking groove 532 is provided on the snap-fit ​​seat 52. A locking block 533 is slidably disposed between the connecting seat 51 and the snap-fit ​​seat 52. When the basket frame 100 is in the unfolded state, the locking block 533, under the action of the first return spring 534, simultaneously engages with the first locking groove 531 and the second locking groove 532, thereby locking the connecting seat 51 and the locking seat 52. The basket frame 100 cannot rotate relative to the foldable frame 4, ensuring stability during use.

[0048] like Figures 9 to 11 As shown, an unlocking component 54 is provided inside the connecting seat 51. A driving component 8 is connected to the left linkage rod 31 and the right linkage rod 32, which can drive the unlocking component 54 to move when the two rods rotate and approach each other. During the folding process of the basket frame 100, the driving component 8 drives the unlocking component 54 to move, thereby automatically releasing the lock assembly 53. Specifically, the driving component 8 includes a left driving rod 81 and a right driving rod 82. The upper end of the left driving rod 81 is rotatably connected to the left linkage rod 31, and the upper end of the right driving rod 82 is rotatably connected to the right linkage rod 32. The lower ends of the left driving rod 81 and the right driving rod 82 are movably connected to the unlocking component 54. Therefore, when the left linkage rod 31 and the right linkage rod 32 rotate and approach each other, the included angle between the left driving rod 81 and the right driving rod 82 will decrease, and the lower ends of the left driving rod 81 and the right driving rod 82 will drive the unlocking component 54 to move downwards relative to the intermediate frame 21, thereby enabling the unlocking component 54 to push the lock assembly 53 to unlock. In this embodiment, the unlocking component 54 includes a sliding block 543, which is rotatably connected to the lower ends of the left drive rod 81 and the right drive rod 82 via a connecting pin 80. The intermediate frame 21 is provided with a longitudinal groove 24 for the connecting pin 80 to slide up and down, so that the sliding block 543 can move up and down smoothly. The unlocking component 54 also includes a moving block 541 that contacts and engages with the inclined surface of the sliding block 543. The moving block 541 is provided with a push post 542. When the sliding block 543 moves downward, the sliding block 543 pushes the moving block 541 to move laterally, and the push post 542 can push the locking block 533 out of the first locking groove 531, thus unlocking the locking assembly 53. At this time, the connecting seat 51 can rotate freely relative to the locking seat 52, so that the basket frame 100 rotates to the final folded position relative to the foldable frame 4 while folding.

[0049] like Figures 9 to 12 ,as well as Figure 15 As shown, further, a trigger 55 is also movably provided on the connecting seat 51. When the basket frame 100 is folded and the connecting seat 51 rotates relative to the locking seat 52 to a certain angle, the trigger 55 will trigger the unlocking button 101 on the foldable frame 4, thereby unlocking the folding locking mechanism of the frame 4 itself. The specific implementation of the trigger 55 is as follows: it includes a trigger block 551 that is slidably disposed on the connecting seat 51 and partially exposed. An elastic element 552 is provided between the trigger block 551 and the connecting seat 51, which is used to push the trigger block 551 to maintain the extended state or to reset it after the external force disappears. The outer end of the trigger block 551 is provided with a pushing surface 553. When the basket frame 100 is folded and its own locking assembly 53 is unlocked, the folded basket frame 100 rotates relative to the locking seat 52 through the connecting seat 51, that is, the folded basket frame 100 rotates relative to the foldable frame 4. When rotated to a specific position, the pushing surface 553 of the trigger block 551 contacts and presses against the unlocking button 101 on the frame, thereby triggering the folding unlocking mechanism of the frame 4. This design links the three steps of "basket frame folding", "basket frame and foldable frame unlocking", and "foldable frame unlocking itself". Users only need to continuously complete the action of folding the basket frame 100 to automatically and sequentially trigger the subsequent unlocking, realizing the rapid folding of the entire infant vehicle, simplifying the operation process, and is especially suitable for parents who need to hold their baby and fold the vehicle at the same time.

[0050] Regarding the locking devices of Embodiments 1 and 2 of the basket frame, such as Figure 1 , Figure 13 and Figure 14As shown, the locking device is positioned between the left connecting shell 111 and the right connecting shell 121. The left connecting shell 111 is connected to the upper left frame 11, and the right connecting shell 121 is connected to the upper right frame 12. The locking device includes a first locking groove 801 on the left connecting shell 111 and a second locking groove 802 on the right connecting shell 121. A locking block 803 is slidably disposed between the left and right connecting shells 111 and 121. When the basket frame 100 is unfolded, the locking block 803, under the thrust of the third return spring 809, simultaneously engages with the first locking groove 801 and the second locking groove 802, locking the upper left frame 11 and the upper right frame 12. The third return spring 809 is disposed between the right connecting shell 121 and the locking block 803. To unlock, by rotating the handle 87 on the upper left frame 11, the handle 87 pulls the rotating block 804 between the locking block 803 and the left connecting shell 111 via the pull rope 808. The rotating block 804 has multiple grooves 805 along its circumference, and the left connecting shell 111 has multiple protrusions 806. When the rotating block 804 rotates, the protrusions 806 interact with the groove walls of the grooves 805 to generate a lateral force, which pushes the rotating block 804 to move laterally, thereby pushing the locking block 803 out of the first locking groove 801 and unlocking it.

[0051] In embodiment 2 of the basket frame, a handle 13 is rotatably connected to the right connecting shell 121 for convenient carrying. A slider 901 is also provided inside the left connecting shell 111. The slider 901 has teeth 903 along its circumference. The lower end of the handle 13 has a groove 902 that engages with the teeth 903. A fourth return spring 904 located between the left connecting shell 111 and the slider 901 pushes the slider 901, keeping the groove 902 and teeth 903 engaged, thus positioning the handle 13. When the user rotates the handle 13 to fold or unfold, the groove wall of the groove 902 is pressed against the teeth 903, causing the slider 901 to retract and the fourth return spring 904 to be compressed. When the handle 13 is rotated to its final position, the fourth return spring 904 re-engages the teeth 903 with the groove 902.

[0052] The present invention also discloses an infant carrier comprising the basket frame 100 of Embodiment 2 described above. For example... Figures 15 to 18 As shown, the infant carrier includes a foldable frame 4. The foldable frame 4 typically includes rear legs 41 and front legs 42 rotatably connected to the rear legs 41, and a push rod assembly 43. Wheels 44 are mounted on the lower ends of the front legs 42 and the rear legs 41. A mounting base 45 is provided on the frame 4, and the basket frame 100 is detachably connected to the mounting base 45 via a snap-fit ​​seat 52 of its connecting assembly 5.

[0053] like Figures 11 to 15As shown, a locking groove 61 is provided on the fixed base 45. A sliding block 62 is slidably provided inside the locking base 52. One end of the sliding block 62 is provided with a hook 63, and the other end is provided with an exposed operating part 64. A fifth return spring 65 is provided between the locking base 52 and the sliding block 62. During installation, the locking base 52 is aligned with the fixed base 45 and pressed down. When the hook 63 abuts against the edge of the fixed base 45 on the inclined surface 631, it retracts and then engages with the locking groove 61. Under the action of the fifth return spring 65, the engagement is maintained, achieving a secure installation. Pressing down the operating part 64 can disengage the hook 63 from the locking groove 61, thereby removing the basket.

[0054] like Figure 11 and Figure 15 As shown, a positioning groove 71 is provided at the upper end of the fixed base 45. A positioning block 72 is slidably provided inside the sliding block 62, and a sixth return spring 73 is provided between the positioning block 72 and the sliding block 62. When the operating part 64 is pressed to disengage the hook 63 from the engaging groove 61, the positioning block 72 is engaged in the positioning groove 71 under the action of the sixth return spring 73. It also restricts the return of the sliding block 62, keeping the hook 63 disengaged from the engaging groove 61. At this time, the user can release the operating part 64, thereby freeing up both hands to remove the basket frame 100 from the fixed base 45. The positioning block 72 is provided with an inclined wall 74. When the sliding block 62 is pressed, the positioning block 72 moves along with it and presses the surface of the fixed base 45 through the inclined wall 74, thereby compressing the sixth return spring 73. When the hook 63 is completely disengaged from the engaging groove 61, the positioning block 72 is opposite to the positioning groove 71, and under the action of the sixth return spring 73, the positioning block 72 engages with the positioning groove 71.

[0055] 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 (100) that can move from an unfolded position to a folded position after the locking device is unlocked, comprising an upper frame (1), a lower frame (2), and a linkage component (3) disposed between the two, characterized in that: The upper frame (1) includes a left upper frame (11) and a right upper frame (12) rotatably connected to the left upper frame (11). The lower frame (2) includes a middle frame (21). The left lower frame (22) is rotatably connected to the left side of the middle frame (21), and the right lower frame (23) is rotatably connected to the right side of the middle frame (21). The linkage assembly (3) includes a left linkage rod (31) and a right linkage rod (32). The upper end of the left linkage rod (31) is rotatably connected to the left upper frame (11), and the lower end of the left linkage rod (31) is rotatably connected to the left side of the middle frame (21). The upper end of the right linkage rod (32) is rotatably connected to the right upper frame (12), and the lower end of the right linkage rod (32) is rotatably connected to the right side of the middle frame (21). The left linkage rod (31) is provided with a left sliding sleeve (33) that can slide along it. A first left connecting rod (34) is provided between the sleeve (33) and the lower left frame (22) and is rotatably connected to both. A second left connecting rod (35) is also provided between the left sliding sleeve (33) and the right linkage rod (32) and is rotatably connected to both. A right sliding sleeve (36) is provided on the right linkage rod (32) and is rotatably connected to both. A first right connecting rod (37) is provided between the right sliding sleeve (36) and the lower right frame (23) and is rotatably connected to both. A second right connecting rod (38) is also provided between the right sliding sleeve (36) and the left linkage rod (31) and is rotatably connected to both. When the upper left frame (11) and the upper right frame (12) rotate relative to each other at the contact position and move closer to the middle frame (21), the linkage component (3) drives the lower left frame (22) and the lower right frame (23) to rotate and move closer to the middle frame (21).

2. The basket frame (100) according to claim 1, characterized in that: The second left link (35) includes an upper left section (351) and a lower left section (352) that is bent relative to the upper left section (351). The upper end of the upper left section (351) is rotatably connected to the left sliding sleeve (33), and the lower left section (352) is rotatably connected to the right linkage rod (32). The second right link (38) includes an upper right section (381) and a lower right section (382) that is bent relative to the upper right section (381). The upper end of the upper right section (381) is rotatably connected to the right sliding sleeve (36), and the lower right section (382) is rotatably connected to the left linkage rod (31).

3. The basket frame (100) according to claim 1 or 2, characterized in that: The intermediate frame (21) is also connected to a connecting component (5) that can install the basket frame onto the foldable frame (4). The connecting component (5) includes a connecting seat (51) that is fixedly connected to the intermediate frame (21). A snap-fit ​​seat (52) that can snap onto the foldable frame (4) is rotatably connected to the connecting seat (51). A locking component (53) that can lock the two is provided between the connecting seat (51) and the snap-fit ​​seat (52). An unlocking component (54) that can drive the locking component (53) to unlock is provided inside the connecting seat (51). A driving component (8) that can drive the unlocking component (54) to move and unlock the locking component (53) when the two rotate and come close to each other is connected to the left linkage rod (31) and the right linkage rod (32).

4. The basket frame (100) according to claim 3, characterized in that: The driving component (8) includes a left driving rod (81) and a right driving rod (82). The upper end of the left driving rod (81) is rotatably connected to the left linkage rod (31), and the upper end of the right driving rod (82) is rotatably connected to the right linkage rod (32). The lower ends of the left driving rod (81) and the right driving rod (82) are movably connected to the unlocking component (54), so that when the left linkage rod (31) and the right linkage rod (32) rotate and approach each other, the lower ends of the left driving rod (81) and the right driving rod (82) drive the unlocking component (54) to move downward relative to the intermediate frame (21) and push the locking assembly (53) to unlock.

5. The basket frame (100) according to claim 4, characterized in that: The unlocking component (54) includes a sliding block (543), which is rotatably connected to the lower ends of the left drive rod (81) and the right drive rod (82) via a connecting pin (80). The intermediate frame (21) is provided with a longitudinal groove (24) for the connecting pin (80) to slide up and down.

6. The basket frame (100) according to claim 5, characterized in that: The locking assembly (53) includes a first locking groove (531) on the connecting seat (51), a second locking groove (532) on the locking seat (52), a locking block (533) that can simultaneously engage with the first locking groove (531) and the second locking groove (532) is slidably provided between the connecting seat (51) and the locking seat (52), an unlocking member (54) is connected to the locking block (533) and can push the locking block (533) out of the first locking groove (531), and a first return spring (534) that can push the locking block (533) to slide back to its original position is provided between the locking block (533) and the locking seat (52).

7. The basket frame (100) according to claim 6, characterized in that: The unlocking component (54) also includes a movable block (541) that contacts and engages with the inclined surface of the sliding block (543). The movable block (541) is provided with a push post (542). When the sliding block (543) moves downward, the sliding block (543) pushes the movable block (541) to move laterally so that the push post (542) on the movable block (541) pushes the locking block (533) out of the first locking groove (531).

8. The basket frame (100) according to claim 4, characterized in that: A trigger (55) is movably provided on the connecting seat (51). When the basket frame is folded, the trigger (55) rotates with the connecting seat (51) relative to the snap-fit ​​seat (52) and can trigger the unlock button (101) on the foldable frame (4) to move, thereby unlocking the foldable frame (4). The trigger (55) includes a trigger block (551) that is slidably provided on the connecting seat (51) and exposed. An elastic element (552) that can push the trigger block (551) to slide back to its original position is provided between the trigger block (551) and the connecting seat (51). The outer end of the trigger block (551) is provided with a pushing surface (553) that can push the unlock button (101) to move when the connecting seat (51) rotates.

9. The basket frame (100) according to claim 1, characterized in that: The lower end of the left linkage rod (31) is provided with a left extension (91) that can rotate with it relative to the lower left frame (22), and the lower end of the right linkage rod (32) is provided with a right extension (92) that can rotate with it relative to the lower right frame (23). When the basket frame (100) is in the unfolded state, the left extension (91) and the right extension (92) move to the lower side of the lower frame (2) and can be supported on the ground.

10. An infant carrier, characterized in that: The foldable frame (4) includes a rear leg (41) and a front leg (42) and a push rod assembly (43) rotatably connected to the rear leg (41). The lower ends of the front leg (42) and the rear leg (41) are provided with wheels (44). The foldable frame (4) is provided with a fixed seat (45). The fixed seat (45) is connected to the basket frame (100) as described in any one of claims 3 to 9. The snap-fit ​​seat (52) is detachably connected to the fixed seat (45).

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