Foldable child sleeping basket

Abstract

The invention discloses a foldable sleeping basket for children, and belongs to the technical field of special furniture for children. The sleeping basket mainly comprises a lower frame, a support, an upper frame, a handle rod, a connecting rod mechanism, a first locking mechanism and a second locking mechanism. Wherein the support is composed of a fixed seat and a rotating seat, and the linkage mechanism can achieve synchronous folding and unfolding actions of the upper frame and the lower frame. The first locking mechanism is arranged at the connecting part of the upper frame and the handle rod and is used for locking or unlocking the relative rotation state of the upper frame and the handle rod; the second locking mechanism is arranged on the support and used for locking or unlocking the relative rotation state of the lower frame and the support and is matched with the elastic reset piece and the slope transmission structure, and the one-key convenient unlocking and automatic reset functions are achieved. In addition, a touch block is integrated on the support and can be in linkage with a locking structure of the frame in the folding process of the sleeping basket, and cooperative unlocking is achieved. The child sleeping basket effectively solves the technical problems that an existing child sleeping basket is complex in mechanism, unreliable in locking, tedious in operation and the like.

Description

Technical Field

[0001] This invention relates to the field of children's furniture technology, specifically to a foldable children's sleeping basket. Background Technology

[0002] Baskets are widely used in daily life and travel due to their convenient storage and small footprint, often used as accessories with strollers, shopping carts, and other similar devices. However, most foldable bassinets on the market currently suffer from the following drawbacks: complex folding mechanism designs (such as unreasonable linkage layout leading to asynchronous folding), insufficient reliability of locking structures (such as single-point locking being prone to loosening), cumbersome folding and unfolding operations (requiring multiple manual unlockings), and the tendency for parts to loosen or become stuck during use. This not only reduces the user experience but may also pose safety hazards. To address these issues, this invention proposes a bassinet with a reasonable structural design, reliable locking mechanism, and simple operation, thereby improving the product's practicality and safety. Summary of the Invention

[0003] The purpose of this invention is to provide a foldable children's bassinet that solves the problems of complex folding mechanisms, unreliable locking, and cumbersome operation of existing foldable children's bassinet mechanisms, thereby achieving smooth folding and unfolding of the bassinet and improving safety and convenience of use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A foldable child sleeping basket includes a lower frame, a support, an upper frame, a handle, a linkage mechanism, a first locking mechanism, and a second locking mechanism.

[0005] The lower frame includes at least two U-shaped rods; the support includes a first support and a second support arranged symmetrically on the left and right, the first support being rotatably connected to one end of the lower frame, and the second support being rotatably connected to the other end of the lower frame; the upper frame is arranged vertically and alternately with the lower frame, and the upper frame includes at least two U-shaped rods; the handle is U-shaped, and its two ends are rotatably connected to the two ends of the upper frame respectively; the linkage mechanism includes a first linkage mechanism and a second linkage mechanism arranged symmetrically on the left and right, the first linkage mechanism being rotatably connected to the first support, the upper frame, and the lower frame respectively, and the second linkage mechanism being rotatably connected to the second support, the upper frame, and the lower frame respectively; a first locking mechanism is provided at the rotatable connection between the upper frame and the handle, used to lock or unlock the relative rotation state of the two; a second locking mechanism is provided on the support, used to lock or unlock the relative rotation state of the lower frame and the support; wherein, the second locking mechanism is unlocked in conjunction with the folding action of the U-shaped rods of the lower frame.

[0006] Furthermore, the lower frame specifically includes a first U-shaped rod and a second U-shaped rod; a first support is rotatably connected to the first end of the first U-shaped rod and the first end of the second U-shaped rod, respectively, and a second support is rotatably connected to the second end of the first U-shaped rod and the second end of the second U-shaped rod, respectively.

[0007] Furthermore, the upper frame specifically includes a third U-shaped rod and a fourth U-shaped rod; the first end of the handle rod is rotatably connected to the first end of the third U-shaped rod and the first end of the fourth U-shaped rod, respectively, and the second end of the handle rod is rotatably connected to the second end of the third U-shaped rod and the second end of the fourth U-shaped rod, respectively.

[0008] Further, the first linkage mechanism includes a first left link, a second left link, a third left link, and a fourth left link; the first and second left links are arranged symmetrically about the first support, and the third and fourth left links are also arranged symmetrically about the first support; the first support is rotatably connected to the lower ends of the first and second left links respectively; the upper end of the first left link is rotatably connected to the left side of the first U-shaped rod; the upper end of the second left link is rotatably connected to the left side of the second U-shaped rod; the lower end of the third left link is rotatably connected to the left side of the third U-shaped rod; the upper end of the third left link is rotatably connected to the first left link; the lower end of the fourth left link is rotatably connected to the left side of the fourth U-shaped rod; and the upper end of the fourth left link is rotatably connected to the second left link.

[0009] Furthermore, the second linkage mechanism includes a first right link, a second right link, a third right link, and a fourth right link; the first and second right links are arranged symmetrically about the second support, and the third and fourth right links are also arranged symmetrically about the second support; the second support is rotatably connected to the lower ends of the first and second right links respectively; the upper end of the first right link is rotatably connected to the right side of the first U-shaped rod; the upper end of the second right link is rotatably connected to the right side of the second U-shaped rod; the lower end of the third right link is rotatably connected to the right side of the third U-shaped rod; the upper end of the third right link is rotatably connected to the first right link; the lower end of the fourth right link is rotatably connected to the right side of the fourth U-shaped rod; and the upper end of the fourth right link is rotatably connected to the second right link.

[0010] Furthermore, the two ends of the third U-shaped rod are respectively fixed with a first connecting part, the two ends of the fourth U-shaped rod are respectively fixed with a second connecting part, and the two ends of the handle rod are respectively fixed with a third connecting part. The third connecting part is disposed between the first connecting part and the second connecting part. The inner side of the first connecting part is fixed with a central shaft extending toward the second connecting part. The second connecting part is shaped to fit the first connecting part and is rotatably connected to the central shaft. The inner side of the second connecting part is fixed with a circular protrusion ring protruding toward the first connecting part. The axis of the circular protrusion ring is coaxial with the axis of the central shaft. The third connecting part is rotatably sleeved on the outer circumference of the circular protrusion ring. The inner side of the first connecting part is provided with a first mating cavity, and the inner side of the second connecting part is provided with a second mating cavity. The first mating cavity and the second mating cavity together form a first assembly cavity. The first assembly cavity is located inside the circular protrusion ring, and a first locking mechanism is disposed in the first assembly cavity.

[0011] Furthermore, the first locking mechanism includes a driving member, a traction rope, a rotating member, a transmission member, a first locking member, a first elastic reset member, and a second elastic reset member. The driving member is movably mounted on a third U-shaped rod, and the traction rope is movably threaded through the third U-shaped rod. One end of the traction rope is connected to the driving member, and the other end is connected to the rotating member. The rotating member is rotatably sleeved on the central shaft. The rotating member has an arc-shaped mounting groove that matches its rotation trajectory. The inner side of the first connecting part has an abutment plate that can extend into the arc-shaped mounting groove. The first elastic reset member is disposed in the arc-shaped mounting groove, with one end abutting against the abutment plate and the other end abutting against the end wall of the arc-shaped mounting groove. The first elastic reset member can provide a biasing force to the rotating member to reset it to its initial position. The transmission member is sleeved on the central shaft, which can only move along the central shaft axis. A first inclined plane transmission structure is provided between the transmission component and the rotating component. The rotational motion of the rotating component is converted into linear motion of the transmission component through the first inclined plane transmission structure. The first locking component is disposed in the first assembly cavity and can only move along the central axis. The first locking component abuts against the end of the transmission component away from the rotating component. The first locking component has a locked position and an unlocked position: in the locked position, one end of the first locking component is engaged with the first mating cavity and the other end is engaged with the second mating cavity; in the unlocked position, the first locking component is completely contained in the second mating cavity. The second elastic reset component is disposed at the end of the first locking component away from the transmission component, and one end of the second elastic reset component abuts against the end wall of the second mating cavity and the other end abuts against the first locking component. The second elastic reset component can provide a biasing force to the first locking component to reset it to the locked position.

[0012] Furthermore, a guide structure is provided between the first locking member and the first assembly cavity to constrain the first locking member to move only along the central axis. The guide structure includes a guide block and a guide groove. The guide block is machined and formed on the outer periphery of the first locking member, and the guide groove is machined and formed on the inner wall of the first assembly cavity. The guide structure has multiple guides evenly distributed in the circumferential direction around the central axis.

[0013] Furthermore, the first locking mechanism also includes a second locking member and a third elastic reset member. The second connecting portion has a second assembly cavity located outside the circular convex ring, and the second assembly cavity is connected to the first assembly cavity through a guide groove. The third connecting portion has a slot. The second locking member is movable only along the central axis direction within the second assembly cavity. The second locking member has a locked position and an unlocked position: in the locked position, one end of the second locking member is engaged with the second assembly cavity, and the other end is engaged with the slot; in the unlocked position, the second locking member is completely contained within the second assembly cavity. The third elastic reset member is located at the end of the second locking member away from the third connecting portion, and one end of the third elastic reset member abuts against the end wall of the second assembly cavity, while the other end abuts against the second locking member. The third elastic reset member can provide a biasing force to the second locking member to reset it to the locked position.

[0014] Furthermore, the first locking member has a first baffle fixed on the side near the guide groove, and the second locking member has a second baffle fixed on the side near the guide groove. Both the first baffle and the second baffle extend into the guide groove. When the first locking member moves from the locked position to the unlocked position, the first baffle can push the second baffle, causing the second locking member to move from its locked position to the unlocked position. The moving stroke of the first locking member is greater than the moving stroke of the second locking member.

[0015] Furthermore, the first locking mechanism also includes a handle button and a fourth elastic reset member. A button hole is provided on the first connecting part, and the handle button is movably disposed within the button hole along the central axis. A pressing part is fixedly provided on the inner end of the handle button. A guide groove extends through a circular convex ring along the central axis, and a through hole communicating with the guide groove is opened on the end wall of the button hole, the through hole being arranged along the central axis. The handle button has a first limit position and a second limit position: in the first limit position, the pressing part is completely accommodated within the button hole; from the first limit position to the second limit position… During the movement, the pressing part can pass through the through hole to push the second locking member from its locked position to the unlocked position; the fourth elastic reset member is disposed in the button hole, one end of which abuts against the end wall of the button hole, and the other end abuts against the handle button, and provides a biasing force to the handle button to reset it to the first extreme position; the second locking member has a third baffle fixed on the side near the guide groove, which is spaced apart from the second baffle. The third baffle extends into the guide groove. During the movement of the handle button from the first extreme position to the second extreme position, the pressing part can pass through the through hole and abut against the third baffle.

[0016] Furthermore, both the first support and the second support are provided with a first limiting structure for limiting the rotation direction and angle of the first U-shaped rod and the second U-shaped rod; the first limiting structure includes a first limiting groove formed in the first support and the second support, and a first limiting block fixed to both ends of the first U-shaped rod and both ends of the second U-shaped rod. The first limiting groove is an arc groove, and the center of the circle corresponding to the first limiting groove coincides with the rotation axis of the first U-shaped rod or the rotation axis of the second U-shaped rod. The first limiting block slides in conjunction with the first limiting groove.

[0017] Furthermore, both the first and second supports include a fixed seat and a rotating seat. The fixed seat is used to connect to the frame, and a fixed shaft parallel to the central axis is fixedly provided on the inner side of the fixed seat. The rotating seat is rotatably connected to the fixed shaft. The outer middle part of the rotating seat of the first support is rotatably connected to the first end of the first U-shaped rod and the first end of the second U-shaped rod, respectively. The outer top of the rotating seat of the first support is rotatably connected to the lower end of the first left connecting rod and the lower end of the second left connecting rod, respectively. The outer middle part of the rotating seat of the second support is rotatably connected to the second end of the first U-shaped rod and the second end of the second U-shaped rod, respectively. The outer top of the rotating seat of the second support is rotatably connected to the lower end of the first right connecting rod and the lower end of the second right connecting rod, respectively.

[0018] Furthermore, the inner side of the fixed seat is provided with a third mating cavity, and the inner side of the rotating seat is provided with a fourth mating cavity. The third mating cavity and the fourth mating cavity together form a third assembly cavity, and the second locking mechanism is disposed in the third assembly cavity.

[0019] Furthermore, the second locking mechanism includes a slider, a slide rod, a drive shaft, and a fifth elastic reset component; a first slide groove is provided in the third assembly cavity, the axis of the first slide groove being parallel to the axis of the fixed shaft, the slider being disposed in the first slide groove and only able to move along the axis of the first slide groove; a second slide groove is provided in the fourth mating cavity, the axis of the second slide groove being perpendicular to and connected to the axis of the first slide groove, the second slide groove having a cavity matching the shape of the slider at its interaction with the first slide groove; the slide rod is disposed in the second slide groove and can only move along the axis of the second slide groove, a clearance hole is provided at one end of the second slide groove near the rotation fulcrum of either the first U-shaped rod or the second U-shaped rod; the axis of the drive shaft is parallel to the rotation axis of either the first U-shaped rod or the second U-shaped rod, one end of the drive shaft passing through the clearance hole and adjacent to the first U-shaped rod. A U-shaped rod or a second U-shaped rod is fixedly connected. The slide rod has a connecting hole for the other end of the drive shaft to be vertically inserted. The connecting hole is larger than the outer diameter of the drive shaft, so that the drive shaft can be offset within the connecting hole to avoid motion interference. A second inclined plane transmission structure is provided between the slide rod and the slider. The linear motion of the slide rod is converted into the linear motion of the slider through the second inclined plane transmission structure. The slider has a locked position and an unlocked position: in the locked position, one end of the slider is engaged with the first slide groove, and the other end is engaged with the cavity; in the unlocked position, the slider is completely contained within the first slide groove. A fifth elastic reset member is provided at the end of the slider away from the slide rod, and one end of the fifth elastic reset member abuts against the end wall of the third mating cavity, and the other end abuts against the slider. The fifth elastic reset member can provide a biasing force to the slider to reset it to the locked position.

[0020] Furthermore, the third mating cavity is provided with a third sliding groove, which is located at the bottom of the fixed seat, and the axis of the third sliding groove is perpendicular to the horizontal plane; the fourth mating cavity is provided with a fourth sliding groove, which includes a straight sliding groove and an arc sliding groove that are interconnected. The axis of the straight sliding groove is perpendicular to the axis of the fixed shaft, and the straight sliding groove extends outward from the middle of the third mating cavity; the center of the arc sliding groove coincides with the fixed shaft, and the arc sliding groove is located outside the straight sliding groove; an actuating block is slidably provided in the third sliding groove, and a transmission rod that can extend into the fourth sliding groove is fixedly connected to the actuating block. The transmission rod is slidably connected to the fourth sliding groove; when the rotating seat rotates around the fixed shaft, the straight sliding groove can press the transmission rod to drive the actuating block to move downward, and cause the actuating block to extend from the bottom of the fixed seat to activate the locking structure of the frame; when the transmission rod slides from the straight sliding groove to the arc sliding groove, the extended state of the actuating block can remain unchanged under the continuous rotation of the rotating seat.

[0021] Furthermore, a second limiting structure is provided between the rotating seat and the fixed seat to limit the relative rotation direction and angle between the two; the second limiting structure includes a second limiting groove opened in the rotating seat and a second limiting block fixed to the fixed seat. The second limiting groove is an arc groove, the center of the circle corresponding to the second limiting groove coincides with the axis of the fixed shaft, and the second limiting block slides with the second limiting groove.

[0022] Furthermore, the mounting base is equipped with a mounting mechanism that can lock it to the frame.

[0023] The foldable child bassinet implementing the embodiments of the present invention has the following advantages compared with the prior art: 1. This bassinet features a rational layout of a lower frame, upper frame, support, and linkage mechanism. Symmetrically arranged linkage mechanisms (such as the first and second linkage mechanisms) connect the upper and lower frames, ensuring synchronized movement during folding and unfolding, preventing jamming or tilting caused by uneven force on one side. This design makes the bassinet fold smoothly and stably, and its structure stable after unfolding, making it suitable for frequent use.

[0024] 2. Convenient unlocking and automatic reset of the first locking mechanism: This mechanism is located at the connection between the upper frame and the handle. Through the cooperation of the drive component, traction rope, inclined plane transmission structure, and elastic reset component, one-button unlocking is achieved. When the user operates the drive component, the traction rope drives the rotating component to rotate, and the inclined plane transmission converts the rotational motion into linear motion, pushing the locking component to unlock. After release, the elastic reset component (such as the first and second elastic reset components) automatically resets the locking component, ensuring a reliable locking state. This design solves the problem of loose locking in traditional bassinet locks and improves safety.

[0025] 3. Linkage Unlocking Mechanism of the Second Locking Mechanism: The second locking mechanism is mounted on the support and unlocks in conjunction with the folding action of the lower frame. When the lower frame rotates, the drive shaft pushes the slide bar, and the inclined transmission structure causes the slider to exit the locked position, achieving automatic unlocking; when unfolded, the elastic reset component drives the slider to reset and lock. This linkage design reduces the number of operation steps and avoids the risk of users forgetting to unlock, making it especially suitable for rapid folding scenarios.

[0026] 4. A first limiting structure (such as a first limiting groove and a first limiting block) is provided at the first and second supports, and a second limiting structure is provided between the rotating seat and the fixed seat. Through the sliding cooperation of the arc groove and the limiting block, the rotation angle of the U-shaped rod and the rotating seat is precisely limited. This effectively prevents component collisions or wear caused by excessive rotation, extends the service life of the bassinet, and improves the stability during the folding process and when unfolded for use.

[0027] 5. The trigger block structure on the support, through the cooperation of the transmission rod and the fourth sliding groove, achieves the linkage between the folding of the bassinet and the locking mechanism of the frame. When the bassinet is folded, the rotating seat rotates, causing the linear sliding groove to press against the transmission rod, causing the trigger block to extend and triggering the frame to unlock; after folding, the arc-shaped sliding groove keeps the trigger block in the extended state, ensuring that the frame remains unlocked. This design simplifies the coordinated operation of the bassinet and the frame, improving overall efficiency. Attached Figure Description

[0028] Figure 1 This is an isometric view of a child's bassinet unfolded according to an embodiment of the present invention; Figure 2 This is a side view of the child's bassinet after it has been unfolded according to an embodiment of the present invention; Figure 3 It is at Figure 2 A cross-sectional view along direction AA in the structure shown; Figure 4 It is at Figure 3 A partial enlarged view of region B in the structure shown, with a cross-sectional view of the first locking mechanism. Figure 5 It is at Figure 3 The diagram shows a partial enlarged view of region C in the structure shown, with a sectional view of the mounting mechanism. Figure 6 This is a cross-sectional view of the second locking mechanism; Figure 7 This is an exploded view of the entire first locking mechanism; Figure 8 This is a partial exploded view of the first locking mechanism; Figure 9 This is a partial exploded view of the first locking mechanism from another perspective; Figure 10 This is an exploded view of the second locking mechanism and the mounting mechanism; Figure 11 This is an exploded view of the second locking mechanism and the mounting mechanism from another perspective; Figure 12 This is an isometric view of a child's bassinet folded according to an embodiment of the present invention; Figure 13 This is an isometric drawing of the connection between the child's bassinet and the frame; Figure 14 It is an axonometric drawing of the chassis; Figure 15 It is at Figure 14 A magnified view of region D in the structure shown.

[0029] Marked in the image: 100. Basket; 1. Lower frame; 2. First U-shaped rod; 3. Second U-shaped rod; 4. Support; 5. First support; 6. Second support; 7. Upper frame; 8. Third U-shaped rod; 9. Fourth U-shaped rod; 10. Handle; 11. Linkage mechanism; 12. First linkage mechanism; 13. Second linkage mechanism; 14. First locking mechanism; 15. Second locking mechanism; 16. First left link; 17. Second left link; 18. Third left link; 19. Fourth left link; 20. First right link; 21. Second right link; 22. Third right link; 23. Fourth Right connecting rod; 24. First connecting part; 25. Second connecting part; 26. Third connecting part; 27. Central shaft; 28. Circular convex ring; 29. ​​First assembly cavity; 30. First mating cavity; 31. Second mating cavity; 32. Second assembly cavity; 33. Guide groove; 34. Driving component; 35. Traction rope; 36. Rotating component; 37. Transmission component; 38. First locking component; 39. Second locking component; 40. First elastic reset component; 41. Second elastic reset component; 42. Third elastic reset component; 43. Fourth elastic reset component; 44. Arc-shaped mounting groove; 45. Abutment Plate; 46. First inclined plane transmission structure; 47. Guide structure; 48. Guide block; 49. Guide groove; 50. Slot; 51. First baffle; 52. Second baffle; 53. Handle button; 54. Button hole; 55. Pressing part; 56. Through hole; 57. Third baffle; 58. Fixed seat; 59. Rotating seat; 60. Fixed shaft; 61. Third assembly cavity; 62. Third mating cavity; 63. Fourth mating cavity; 64. Slider; 65. Slide rod; 66. Drive shaft; 67. Fifth elastic reset element; 68. First slide groove; 69. Second slide groove; 70. Cavity 71. Clearance hole; 72. Connecting hole; 73. Second inclined plane transmission structure; 74. First limiting structure; 75. First limiting groove; 76. First limiting block; 77. Second limiting structure; 78. Second limiting groove; 79. Second limiting block; 80. Third sliding groove; 81. Fourth sliding groove; 82. Straight sliding groove; 83. Circular arc sliding groove; 84. Actuating block; 85. Transmission rod; 86. Mounting mechanism; 87. Base; 88. Locking tongue; 89. Pressing slider; 90. Compression spring; 91. Slide cavity; 92. Slide track; 93. Inclined guide surface; 94. Inclined plane; 200. Frame; 201. Frame mounting slot; 202. Locking structure. Detailed Implementation

[0030] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figures 1 to 15 As shown, this embodiment provides a foldable child bassinet 100, including a lower frame 1, a support 4, an upper frame 7, a handle 10, a linkage mechanism 11, a first locking mechanism 14, and a second locking mechanism 15. The specific structure and connection relationship of each component are as follows: 1. Structure and connection of the lower frame and supports like Figure 1 and Figure 2 As shown, the lower frame 1 includes a first U-shaped rod 2 and a second U-shaped rod 3, which are arranged in parallel and together form the bottom support structure of the basket 100. The support 4 includes a first support 5 and a second support 6 arranged symmetrically on the left and right sides, serving as a connection medium between the lower frame 1 and the external frame 200, and also providing installation support for the linkage mechanism 11. The first support 5 is rotatably connected to the first end of the first U-shaped rod 2 and the first end of the second U-shaped rod 3 via a pivot, and the second support 6 is rotatably connected to the second end of the first U-shaped rod 2 and the second end of the second U-shaped rod 3 via a pivot, allowing the first U-shaped rod 2 and the second U-shaped rod 3 to rotate relative to the support 4, providing a basis for the folding of the basket 100.

[0033] like Figure 10 and Figure 11 As shown, to limit the rotation direction and angle of the first U-shaped rod 2 and the second U-shaped rod 3 and prevent excessive rotation from causing structural damage, both the first support 5 and the second support 6 are provided with a first limiting structure 74. The first limiting structure 74 includes a first limiting groove 75 and a first limiting block 76. The first limiting groove 75 is located at the rotational connection between the first support 5 and the second support 6, and has an arc-shaped groove structure, with its corresponding center coinciding with the rotation axis of the first U-shaped rod 2 or the second U-shaped rod 3. The first limiting block 76 is fixed to both ends of the first U-shaped rod 2 and the second U-shaped rod 3, and extends into the first limiting groove 75, slidingly engaging with it. When the first U-shaped rod 2 or the second U-shaped rod 3 rotates, the first limiting block 76 slides along the first limiting groove 75. When it slides to the end of the first limiting groove 75, it can no longer rotate, thus achieving precise limitation of the rotation angle.

[0034] Furthermore, such as Figure 10 and Figure 11 As shown, both the first support 5 and the second support 6 adopt a split structure, including a fixed seat 58 and a rotating seat 59. The fixed seat 58 is used to connect with the frame 200, and a fixed shaft 60 is fixedly provided on its inner side. The axis of the fixed shaft 60 is parallel to the central shaft 27 mentioned later. The rotating seat 59 is rotatably connected to the fixed shaft 60 through bearings, realizing the rotation of the rotating seat 59 relative to the fixed seat 58. The specific connection relationship is as follows: the outer middle part of the rotating seat 59 of the first support 5 is rotatably connected to the first end of the first U-shaped rod 2 and the first end of the second U-shaped rod 3 through a rotating shaft, and the outer top of the rotating seat 59 is rotatably connected to the lower end of the first left connecting rod 16 and the lower end of the second left connecting rod 17 through a rotating shaft, respectively. The outer middle part of the rotating seat 59 of the second support 6 is rotatably connected to the second end of the first U-shaped rod 2 and the second end of the second U-shaped rod 3 through a rotating shaft, and the outer top of the rotating seat 59 is rotatably connected to the lower end of the first right connecting rod 20 and the lower end of the second right connecting rod 21 through a rotating shaft, respectively.

[0035] like Figure 5 , Figure 10 and Figure 11 As shown, a second limiting structure 77 is provided between the rotating seat 59 and the fixed seat 58 to limit the relative rotation direction and angle. The second limiting structure 77 includes a second limiting groove 78 and a second limiting block 79. The second limiting groove 78 is opened on the inner side of the rotating seat 59 and has an arc groove structure, with its corresponding center coinciding with the axis of the fixed shaft 60. The second limiting block 79 is fixed on the inner side of the fixed seat 58 and extends into the second limiting groove 78 and slides in cooperation with the second limiting groove 78. Through the cooperation between the second limiting block 79 and the second limiting groove 78, the rotation angle of the rotating seat 59 relative to the fixed seat 58 is limited.

[0036] At the same time, such as Figure 3 , Figure 5 , Figure 10 and Figure 11 As shown, the mounting base 58 is equipped with a mounting mechanism 86. This mounting mechanism 86 is an improved adaptation of existing technology and can adopt conventional detachable or fixed connection forms such as snap-fit ​​connection, bolt connection, and threaded connection. Its core function is to stably lock the mounting base 58 to the corresponding mounting position on the frame 200, thereby ensuring the reliability, stability, and ease of assembly of the connection between the bassinet 100 and the frame 200. Specifically, in this embodiment, the mounting mechanism 86 preferably adopts a convenient detachable snap-fit ​​form, which mainly includes a base 87, a locking tongue 88, a push-button slider 89, and a compression spring 90. The assembly relationship and working principle of each component are as follows: The base 87 is fixedly installed on the inner wall of the fixed base 58 by screws or integral molding. The base 87 and the corresponding inner wall of the fixed base 58 enclose a sliding cavity 91 for the slider 89 to move vertically up and down. The sliding cavity 91 has a rectangular structure that runs vertically through the base, and its upper end penetrates the top end face of the fixed base 58, so that the top of the slider 89 can protrude from the top of the fixed base 58 for direct pressing operation by hand. The side wall of the fixed base 58 has a horizontally extending slide 92, which is connected to the sliding cavity 91. The slide 92 horizontally penetrates the outer end face of the fixed base 58 to form a tongue hole for the latch 88 to extend. The slide 92 and the tongue hole are coaxially arranged and have a matching diameter. The latch 88 is slidably assembled in the slide 92 in the horizontal direction, and its end facing the base 87 is connected to the base by a compression spring 90. The spring 90 is in its extended state under its natural condition, which can push the other end of the locking tongue 88 out of the tongue hole along the slide 92. At the same time, the side wall of the sliding block 89 is provided with an inclined guide surface 93, and the end of the locking tongue 88 facing the base 87 is provided with an inclined surface 94 that fits and conforms to the inclined guide surface 93. When the sliding block 89 is pressed and moved downward, the inclined guide surface 93 and the inclined surface 94 generate a horizontal pushing force on the locking tongue 88, forcing the locking tongue 88 to overcome the elastic force of the compression spring 90 and retract along the slide 92 towards the base 87 until the locking tongue 88 is completely out of the tongue hole, thereby unlocking the fixed seat 58 from the frame 200. When the sliding block 89 is released, the locking tongue 88 extends out of the tongue hole again under the elastic restoring force of the compression spring 90 and engages in the slot 201 of the mounting position of the frame 200, thus completing the locking. At the same time, pressing the slider 89 resets it to its initial position under the reverse thrust of the inclined surface 94 of the locking tongue 88.

[0037] 2. Structure and connection of the upper frame and the handle rod like Figure 1 and Figure 2 As shown, the upper frame 7 and the lower frame 1 are arranged vertically at intervals, together forming the storage space of the sleeping basket 100. The upper frame 7 includes a third U-shaped rod 8 and a fourth U-shaped rod 9, which are arranged parallel to each other and correspond to the first U-shaped rod 2 and the second U-shaped rod 3 of the lower frame 1. The handle 10 is U-shaped and used for user carrying. Its two ends are rotatably connected to the two ends of the upper frame 7, specifically: the first end of the handle 10 is rotatably connected to the first end of the third U-shaped rod 8 and the first end of the fourth U-shaped rod 9, and the second end of the handle 10 is rotatably connected to the second end of the third U-shaped rod 8 and the second end of the fourth U-shaped rod 9, allowing the handle 10 to rotate relative to the upper frame 7 for easy folding and storage.

[0038] like Figure 3 , Figure 4 , Figures 7 to 9As shown, to achieve stable locking of the rotating connection between the upper frame 7 and the handle 10, connecting structures are provided at both ends of the third U-shaped rod 8, both ends of the fourth U-shaped rod 9, and both ends of the handle 10. Specifically, a first connecting part 24 is fixed to both ends of the third U-shaped rod 8, a second connecting part 25 is fixed to both ends of the fourth U-shaped rod 9, and a third connecting part 26 is fixed to both ends of the handle 10. The third connecting part 26 is located between the first connecting part 24 and the second connecting part 25, and the three are arranged coaxially. The inner side of the first connecting part 24 is integrally formed with a central shaft 27 extending toward the second connecting part 25. The second connecting part 25 is adapted to the shape of the first connecting part 24 and is rotatably connected to the central shaft 27 by a bearing, so as to realize the rotation of the second connecting part 25 relative to the first connecting part 24. The inner side of the second connecting part 25 is integrally formed with a circular protrusion ring 28 protruding toward the first connecting part 24. The axis of the circular protrusion ring 28 is coaxial with the axis of the central shaft 27. The third connecting part 26 is designed as an annular collar structure. The annular collar is rotatably fitted around the outer periphery of the circular protrusion ring 28, so as to realize the rotation of the third connecting part 26 relative to the second connecting part 25.

[0039] In addition, a first mating cavity 30 is provided on the inner side of the first connecting part 24, and a second mating cavity 31 is provided on the inner side of the second connecting part 25. The first mating cavity 30 and the second mating cavity 31 together form a first assembly cavity 29. The first assembly cavity 29 is located on the inner side of the circular convex ring 28 and is used to install the first locking mechanism 14. A second assembly cavity 32 is also provided on the second connecting part 25. The second assembly cavity 32 is located on the outer side of the circular convex ring 28 and is connected to the first assembly cavity 29 through a guide groove 33. The guide groove 33 passes through the circular convex ring 28 along the axial direction of the central axis 27, providing a channel for the subsequent linkage of the locking components.

[0040] 3. Structure and connection of linkage mechanism like Figure 1 , Figure 2 and Figure 12 As shown, the linkage mechanism 11 is used to connect the upper frame 7, the lower frame 1 and the support 4 to realize the synchronous folding and unfolding of the upper frame 7 and the lower frame 1. It includes a first linkage mechanism 12 and a second linkage mechanism 13 arranged symmetrically on the left and right sides. The two have the same structure and correspond to the connection on the left and right sides respectively.

[0041] The first linkage mechanism 12 includes a first left link 16, a second left link 17, a third left link 18, and a fourth left link 19. To ensure balanced force, the first left link 16 and the second left link 17 are arranged symmetrically about the first support 5, and the third left link 18 and the fourth left link 19 are also arranged symmetrically about the first support 5. The specific connection relationships are as follows: the top outer side of the rotating seat 59 of the first support 5 is rotatably connected to the lower end of the first left connecting rod 16 and the lower end of the second left connecting rod 17 via a rotating shaft; the upper end of the first left connecting rod 16 is rotatably connected to the left side of the first U-shaped rod 2 via a rotating shaft, and the upper end of the second left connecting rod 17 is rotatably connected to the left side of the second U-shaped rod 3 via a rotating shaft; the lower end of the third left connecting rod 18 is rotatably connected to the left side of the third U-shaped rod 8 via a rotating shaft, and the upper end of the third left connecting rod 18 is rotatably connected to the middle part of the first left connecting rod 16 via a rotating shaft; the lower end of the fourth left connecting rod 19 is rotatably connected to the left side of the fourth U-shaped rod 9 via a rotating shaft, and the upper end of the fourth left connecting rod 19 is rotatably connected to the middle part of the second left connecting rod 17 via a rotating shaft.

[0042] The second linkage mechanism 13 includes a first right link 20, a second right link 21, a third right link 22, and a fourth right link 23, arranged symmetrically with the first linkage mechanism 12. Specifically, the top outer side of the rotating seat 59 of the second support 6 is rotatably connected to the lower ends of the first right link 20 and the second right link 21 via rotating shafts; the upper end of the first right link 20 is rotatably connected to the right side of the first U-shaped rod 2 via a rotating shaft; the upper end of the second right link 21 is rotatably connected to the right side of the second U-shaped rod 3 via a rotating shaft; the lower end of the third right link 22 is rotatably connected to the right side of the third U-shaped rod 8 via a rotating shaft; the upper end of the third right link 22 is rotatably connected to the middle of the first right link 20 via a rotating shaft; the lower end of the fourth right link 23 is rotatably connected to the right side of the fourth U-shaped rod 9 via a rotating shaft; and the upper end of the fourth right link 23 is rotatably connected to the middle of the second right link 21 via a rotating shaft. Through the connection of the aforementioned linkage mechanism 11, when the lower frame 1 rotates relative to the support 4, the upper frame 7 can be driven to move synchronously through the linkage, thereby realizing the overall folding and unfolding of the bassinet 100, and vice versa.

[0043] 4. Structure and working principle of the first locking mechanism like Figure 3 , Figure 4 , Figures 7 to 9 As shown, the first locking mechanism 14 is disposed in the first assembly cavity 29 and is used to lock or unlock the relative rotation state of the upper frame 7 and the handle 10. It includes a driving component 34, a traction rope 35, a rotating component 36, a transmission component 37, a first locking component 38, a second locking component 39, a first elastic reset component 40, a second elastic reset component 41, a third elastic reset component 42, a handle button 53, and a fourth elastic reset component 43.

[0044] The driving component 34 adopts a rotating dial or sliding button structure, and is rotatably or slidably installed on the outside of the third U-shaped rod 8 for convenient user operation. The traction rope 35 is a steel wire rope, which is movably threaded through the rope channel opened inside the third U-shaped rod 8. One end of the traction rope 35 is fixedly connected to the driving component 34, and the other end is fixedly connected to the rotating component 36 for transmitting driving force. The rotating component 36 has a ring structure and is rotatably sleeved on the central shaft 27. Its outer side wall has an arc-shaped mounting groove 44 that matches its rotation trajectory. The inner side of the first connecting part 24 has an integrally formed abutment plate 45, which extends into the arc-shaped mounting groove 44. The first elastic reset component 40 is a spring, which is set in the arc-shaped mounting groove 44. One end of the spring abuts against the abutment plate 45, and the other end abuts against the end wall of the arc-shaped mounting groove 44. When the rotating component 36 rotates, the first elastic reset component 40 is compressed or stretched, thereby providing a biasing force to the rotating component 36 to reset it to its initial position.

[0045] The transmission component 37 has a ring structure and can only be moved along the axis of the central shaft 27. Specifically, axial guidance can be achieved through the cooperation of the guide key with the central shaft 27. A first inclined surface transmission structure 46 is provided between the transmission component 37 and the rotating component 36. The first inclined surface transmission structure 46 includes an inclined groove on the end face of the rotating component 36 and an inclined boss protruding from the end face of the transmission component 37. The inclined groove and the inclined boss are adapted to each other. When the rotating component 36 rotates, the inclined boss slides along the inclined groove, thereby converting the rotational motion of the rotating component 36 into the linear motion of the transmission component 37 along the axis of the central shaft 27.

[0046] The first locking member 38 has a columnar structure and is disposed in the first assembly cavity 29, movable only along the axis of the central axis 27. It abuts against the end of the transmission member 37 away from the rotating member 36. To ensure the stability of the movement of the first locking member 38, a guide structure 47 is provided between the first locking member 38 and the first assembly cavity 29. The guide structure 47 includes a guide block 48 and a guide groove 49. The guide block 48 is integrally formed on the outer periphery of the first locking member 38, and the guide groove 49 is formed on the inner wall of the first assembly cavity 29. There are 3-4 guide structures 47 evenly distributed in the circumferential direction around the axis of the central axis 27. Through the sliding engagement of the guide block 48 and the guide groove 49, the first locking member 38 is constrained to move only along the axial direction. The first locking member 38 has a locked position and an unlocked position: In the locked position, one end of the first locking member 38 extends into the first mating cavity 30 and engages with the inner wall of the first mating cavity 30, and the other end extends into the second mating cavity 31 and engages with the inner wall of the second mating cavity 31, thereby locking the relative rotation of the first connecting part 24 and the second connecting part 25; in the unlocked position, the first locking member 38 is completely housed in the second mating cavity 31 under the push of the transmission member 37, releasing the lock between the first connecting part 24 and the second connecting part 25. The second elastic reset member 41 is a compression spring, located at the end of the first locking member 38 away from the transmission member 37, with one end abutting against the end wall of the second mating cavity 31 and the other end abutting against the first locking member 38, used to provide a biasing force to the first locking member 38 to reset it to the locked position.

[0047] The second locking member 39 has a columnar structure and is disposed in the second assembly cavity 32, movable only along the axis of the central axis 27. A slot 50 is provided on the third connecting portion 26, and the second locking member 39 is adapted to the slot 50. The second locking member 39 has a locked position and an unlocked position: in the locked position, one end of the second locking member 39 engages with the inner wall of the second assembly cavity 32, and the other end extends into the slot 50 and engages with it, thereby locking the relative rotation of the second connecting portion 25 and the third connecting portion 26; in the unlocked position, the second locking member 39 is completely housed within the second assembly cavity 32, releasing the lock between the second connecting portion 25 and the third connecting portion 26. The third elastic reset member 42 is a compression spring, disposed at the end of the second locking member 39 away from the third connecting portion 26. One end of the spring abuts against the end wall of the second assembly cavity 32, and the other end abuts against the second locking member 39, providing a biasing force to reset the second locking member 39 to the locked position.

[0048] To achieve coordinated unlocking of the first locking member 38 and the second locking member 39, the first locking member 38 has a first baffle 51 fixed on the side near the guide groove 33, and the second locking member 39 has a second baffle 52 fixed on the side near the guide groove 33. Both the first baffle 51 and the second baffle 52 extend into the guide groove 33 and are arranged opposite each other in the axial direction. When the first locking member 38 moves from the locked position to the unlocked position, the first baffle 51 moves synchronously and abuts against the second baffle 52, thereby pushing the second baffle 52 to drive the second locking member 39 to move synchronously to the unlocked position. The moving stroke of the first locking member 38 is greater than the moving stroke of the second locking member 39, ensuring that the second locking member 39 can be fully unlocked.

[0049] In addition, the first locking mechanism 14 is also provided with a handle button 53 as an auxiliary unlocking structure. A button hole 54 is provided on the first connecting part 24. The handle button 53 is movably disposed in the button hole 54 along the axis of the central axis 27. A pressing part 55 is integrally formed on its inner end. A through hole 56 communicating with the guide groove 33 is provided on the end wall of the button hole 54. The through hole 56 is arranged along the axis of the central axis 27. The pressing part 55 can pass through the through hole 56 and extend into the guide groove 33. The second locking member 39 is fixedly provided with a third baffle 57 arranged at a distance from the second baffle 52 on the side near the guide groove 33. The third baffle 57 extends into the guide groove 33 and corresponds to the pressing part 55. The handle button 53 has a first limit position and a second limit position: in the first limit position, the pressing part 55 is fully accommodated in the button hole 54; when the user presses the handle button 53, moving it from the first limit position to the second limit position, the pressing part 55 passes through the through hole 56 and abuts against the third baffle 57, pushing the second locking member 39 from the locked position to the unlocked position. The fourth elastic reset member 43 is a compression spring, disposed in the button hole 54, with one end abutting against the end wall of the button hole 54 and the other end abutting against the handle button 53, used to provide a biasing force to the handle button 53 to reset it to the first limit position.

[0050] The working process of the first locking mechanism is as follows: Locked state: Under the action of the first elastic reset member 40, the second elastic reset member 41 and the third elastic reset member 42, the first locking member 38 is in the locked position, locking the first connecting part 24 and the second connecting part 25; the second locking member 39 is in the locked position, locking the second connecting part 25 and the third connecting part 26. At this time, the upper frame 7 and the handle rod 10 cannot rotate relative to each other.

[0051] Unlocking operation: Method 1: The user pushes the drive component 34, which drives the rotating component 36 to rotate via the traction rope 35. The rotating component 36 pushes the transmission component 37 to move axially via the first inclined plane transmission structure 46. The transmission component 37 pushes the first locking component 38 to move to the unlock position. At the same time, the first locking component 38 pushes the second locking component 39 to move to the unlock position via the first baffle 51, thus achieving synchronous unlocking. Method 2: The user presses the handle button 53, which pushes the third baffle 57 to move the second locking component 39 to the unlock position, thus unlocking the second connecting part 25 and the third connecting part 26. This method is suitable for scenarios where the angle of the handle 10 is adjusted individually.

[0052] Reset operation: Release the drive component 34 or the handle button 53. Under the action of each elastic reset component, the rotating component 36, the transmission component 37, the first locking component 38, the second locking component 39 and the handle button 53 are all reset to their initial positions and returned to the locked state.

[0053] 5. Structure and working principle of the second locking mechanism like Figure 6 , Figure 10 and Figure 11 As shown, the second locking mechanism 15 is disposed in the third assembly cavity 61 and is used to lock or unlock the relative rotation state of the lower frame 1 and the support 4. It includes a slider 64, a slide rod 65, a drive shaft 66 and a fifth elastic reset member 67.

[0054] The third assembly cavity 61 is formed by the third mating cavity 62 inside the fixed seat 58 and the fourth mating cavity 63 inside the rotating seat 59. A first slide groove 68 is provided in the third assembly cavity 61. The axis of the first slide groove 68 is parallel to the axis of the fixed shaft 60. The slider 64 is disposed in the first slide groove 68 and is constrained by the guide structure to move only along the axis of the first slide groove 68. A second slide groove 69 is provided in the fourth mating cavity 63. The axis of the second slide groove 69 is perpendicular to and connected to the axis of the first slide groove 68. At the interaction between the second slide groove 69 and the first slide groove 68, a cavity 70 matching the shape of the slider 64 is provided. The cavity 70 is adapted to the slider 64 to achieve locking and positioning.

[0055] The slide bar 65 is disposed within the second slide groove 69 and is constrained by the guide structure to move only along the axial direction of the second slide groove 69. A clearance hole 71 is provided at one end of the second slide groove 69 near the rotation fulcrum of the first U-shaped rod 2 or the second U-shaped rod 3 to allow the drive shaft 66 to pass. The axis of the drive shaft 66 is parallel to the rotation axis of the first U-shaped rod 2. One end of the drive shaft 66 passes through the clearance hole 71 and is fixedly connected to the adjacent first U-shaped rod 2 or second U-shaped rod 3. The other end is vertically inserted into the connecting hole 72 on the slide bar 65. The inner diameter of the connecting hole 72 is larger than the outer diameter of the drive shaft 66, allowing the drive shaft 66 to deflect to a certain extent within the connecting hole 72, thus preventing motion interference during rotation.

[0056] A second inclined surface transmission structure 73 is provided between the slide rod 65 and the slider 64. The second inclined surface transmission structure 73 includes an inclined surface boss on the end face of the slide rod 65 and an inclined surface groove on the end face of the slider 64. The inclined surface boss and the inclined surface groove are adapted to each other. When the slide rod 65 moves linearly along the second slide groove 69, the inclined surface boss slides along the inclined surface groove, thereby converting the linear motion of the slide rod 65 into the linear motion of the slider 64 along the first slide groove 68.

[0057] The slider 64 has a locked position and an unlocked position: In the locked position, one end of the slider 64 is located in the first groove 68, and the other end extends into the cavity 70 and engages with the cavity 70, thereby locking the relative rotation of the fixed seat 58 and the rotating seat 59, and further locking the relative rotation of the lower frame 1 and the support 4; In the unlocked position, the slider 64 is completely housed in the first groove 68 under the push of the slide rod 65, releasing the lock between the fixed seat 58 and the rotating seat 59. The fifth elastic reset member 67 is a compression spring, located at the end of the slider 64 away from the slide rod 65, with one end abutting against the end wall of the third mating cavity 62 and the other end abutting against the slider 64, used to provide a biasing force to the slider 64 to reset it to the locked position.

[0058] The working process of the second locking mechanism is as follows: Locked state: Under the action of the fifth elastic reset member 67, the slider 64 is in the locked position, with one end extending into the cavity 70 to lock the fixed seat 58 and the rotating seat 59. At this time, the lower frame 1 cannot rotate relative to the support 4.

[0059] Unlocking operation: When the user rotates the lower frame 1 or the upper frame 7, the lower frame 1 rotates synchronously through the linkage mechanism 11. The lower frame 1 drives the drive shaft 66 to rotate synchronously. The drive shaft 66 is offset in the connecting hole 72 and pushes the slide rod 65 to move linearly along the second slide groove 69. The slide rod 65 pushes the slider 64 to move along the first slide groove 68 to the unlock position through the second inclined plane transmission structure 73. The slider 64 is fully inserted into the first slide groove 68, releasing the lock between the fixed seat 58 and the rotating seat 59. At this time, the lower frame 1 can rotate relative to the support 4 to achieve folding.

[0060] Reset operation: When the bassinet 100 is unfolded to the preset position, the lower frame 1 drives the drive shaft 66 to rotate in the opposite direction, the slide bar 65 loses the thrust of the drive shaft 66, and under the action of the fifth elastic reset member 67, the slider 64 resets to the locked position, relocking the fixed seat 58 and the rotating seat 59 to ensure the stability of the bassinet 100 after unfolding.

[0061] 6. Structure and working principle of the trigger block like Figure 5 , Figures 10 to 15As shown, to achieve the linkage between the folding of the bassinet 100 and the folding of the frame 200, a third sliding groove 80 is provided in the third mating cavity 62. The third sliding groove 80 is located at the bottom of the fixed base 58, and its axis is perpendicular to the horizontal plane. A fourth sliding groove 81 is provided in the fourth mating cavity 63. The fourth sliding groove 81 includes a straight sliding groove 82 and an arc sliding groove 83 that are connected to each other. The axis of the straight sliding groove 82 is perpendicular to the axis of the fixed shaft 60 and extends outward from the middle of the third mating cavity 62. The center of the arc sliding groove 83 coincides with the fixed shaft 60 and is located outside the straight sliding groove 82.

[0062] An actuating block 84 is slidably provided in the third slide groove 80. The lower end of the actuating block 84 can extend out of the bottom of the fixed seat 58 and is used to activate the locking structure 202 of the frame 200. A transmission rod 85 is fixedly connected to the upper end of the actuating block 84. The transmission rod 85 extends into the fourth slide groove 81 and slides in cooperation with the fourth slide groove 81. When the rotating seat 59 rotates around the fixed shaft 60 (i.e., during the folding of the bassinet 100), the fourth slide 81 rotates synchronously. The inner wall of the straight slide 82 presses against the transmission rod 85, causing the touch block 84 to move downward along the third slide 80. The lower end of the touch block 84 extends out of the bottom of the fixed seat 58 and touches the locking structure 202 of the frame 200, realizing the linkage unlocking of the bassinet 100 and the frame 200. When the transmission rod 85 slides from the straight slide 82 into the arc slide 83, since the center of the arc slide 83 coincides with the fixed shaft 60, when the rotating seat 59 continues to rotate, the transmission rod 85 only slides along the arc slide 83 and no longer produces radial displacement. Therefore, the touch block 84 remains in the extended state, ensuring that the locking structure 202 of the frame 200 remains in the unlocked state until the bassinet 100 is folded. When the bassinet 100 is unfolded, the rotating seat 59 rotates in the opposite direction, and the transmission rod 85 slides from the arc groove 83 back to the straight groove 82. The inner wall of the straight groove 82 pushes the transmission rod 85 in the opposite direction, causing the trigger block 84 to move upward and reset, and return to the third groove 80, thus releasing the trigger on the locking structure 202 of the frame 200.

[0063] It should be noted that the locking structure 202 of the frame 200 is prior art, and the locking components can be found in the applicant's earlier Chinese patent CN202411887230.4.

[0064] 7. The folding and unfolding process of the bassinet 100 Folding process: The user first operates the first locking mechanism 14 through the drive component 34 to unlock the relative rotation between the upper frame 7 and the handle 10; then presses down on the handle 10, which drives the upper frame 7 to move downward, and the upper frame 7 drives the lower frame 1 to rotate relative to the support 4 through the linkage mechanism 11; during the rotation of the lower frame 1, the drive shaft 66 of the second locking mechanism 15 is driven to rotate, so that the second locking mechanism 15 is unlocked, and the rotating seat 59 can rotate relative to the fixed seat 58; at the same time, the rotation of the rotating seat 59 drives the fourth slide 81 to rotate, and the trigger block 84 moves downward to trigger the locking structure 202 of the frame 200; as the handle 10 is continuously pressed, the upper frame 7 and the lower frame 1 gradually approach each other, realizing the folding of the bassinet 100. At this time, the transmission rod 85 is located in the arc slide 83, and the trigger block 84 remains in the extended state.

[0065] Unfolding process: The user pulls the handle 10 upwards, causing the upper frame 7 to move upwards. The upper frame 7, through the linkage mechanism 11, causes the lower frame 1 to rotate in the opposite direction relative to the support 4. During the rotation of the lower frame 1, the drive shaft 66 of the second locking mechanism 15 rotates in the opposite direction. The second locking mechanism 15 is reset and locked under the action of the fifth elastic reset member 67. At the same time, the rotating seat 59 rotates in the opposite direction, and the transmission rod 85 slides from the arc groove 83 back to the straight groove 82, and the trigger block 84 resets upwards. When the bassinet 100 is unfolded to the preset position, the first locking mechanism 14 is reset and locked under the action of the elastic reset member. The upper frame 7 and the handle 10, and the lower frame 1 and the support 4 are all in a locked state. The bassinet 100 is fully unfolded and can be used normally.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A collapsible child's bassinet, characterised in that, The utility model relates to a foldable frame structure, comprising: a lower frame comprising at least two U-shaped bars; a support comprising a first support and a second support arranged symmetrically left and right, the first support being rotatably connected to one end of the lower frame, and the second support being rotatably connected to the other end of the lower frame; an upper frame arranged vertically spaced apart from the lower frame, comprising at least two U-shaped bars; a handle bar in the shape of a U, both ends of the handle bar being rotatably connected to both ends of the upper frame, respectively; a linkage mechanism comprising a first linkage mechanism and a second linkage mechanism arranged symmetrically left and right, the first linkage mechanism being rotatably connected to the first support, the upper frame and the lower frame, respectively, and the second linkage mechanism being rotatably connected to the second support, the upper frame and the lower frame, respectively; a first locking mechanism arranged at the rotatable connection part of the upper frame and the handle bar, for locking or unlocking the relative rotation state of the two; a second locking mechanism arranged on the support, for locking or unlocking the relative rotation state of the lower frame and the support; wherein the second locking mechanism is unlocked in linkage with the folding action of the lower frame U-shaped bar.

2. The collapsible child bassinet of claim 1, wherein, The lower frame comprises a first U-shaped bar and a second U-shaped bar; the first support is rotatably connected to the first end of the first U-shaped bar and the first end of the second U-shaped bar, respectively; and the second support is rotatably connected to the second end of the first U-shaped bar and the second end of the second U-shaped bar, respectively.

3. The collapsible child bassinet of claim 2, wherein, The upper frame comprises a third U-shaped bar and a fourth U-shaped bar; the first end of the handle bar is rotatably connected to the first end of the third U-shaped bar and the first end of the fourth U-shaped bar, respectively; and the second end of the handle bar is rotatably connected to the second end of the third U-shaped bar and the second end of the fourth U-shaped bar, respectively.

4. The collapsible child's bassinet according to claim 3, wherein, The first linkage mechanism comprises a first left linkage rod, a second left linkage rod, a third left linkage rod and a fourth left linkage rod; the first left linkage rod and the second left linkage rod are arranged symmetrically front and back with the first support as the center; and the third left linkage rod and the fourth left linkage rod are arranged symmetrically front and back with the first support as the center. The first support is rotatably connected to the lower end of the first left linkage rod and the lower end of the second left linkage rod, respectively; the upper end of the first left linkage rod is rotatably connected to the left side bar of the first U-shaped bar; and the upper end of the second left linkage rod is rotatably connected to the left side bar of the second U-shaped bar. The lower end of the third left linkage rod is rotatably connected to the left side bar of the third U-shaped bar; the upper end of the third left linkage rod is rotatably connected to the first left linkage rod; the lower end of the fourth left linkage rod is rotatably connected to the left side bar of the fourth U-shaped bar; and the upper end of the fourth left linkage rod is rotatably connected to the second left linkage rod.

5. The collapsible child's bassinet according to claim 3, wherein, The second linkage mechanism comprises a first right linkage rod, a second right linkage rod, a third right linkage rod and a fourth right linkage rod; the first right linkage rod and the second right linkage rod are arranged symmetrically front and back with the second support as the center; and the third right linkage rod and the fourth right linkage rod are arranged symmetrically front and back with the second support as the center. The second support is rotatably connected with the lower end of the first right connecting rod and the lower end of the second right connecting rod respectively, the upper end of the first right connecting rod is rotatably connected with the right side rod part of the first U-shaped rod, and the upper end of the second right connecting rod is rotatably connected with the right side rod part of the second U-shaped rod; The lower end of the third right connecting rod is rotatably connected with the right side rod part of the third U-shaped rod, and the upper end of the third right connecting rod is rotatably connected with the first right connecting rod; the lower end of the fourth right connecting rod is rotatably connected with the right side rod part of the fourth U-shaped rod, and the upper end of the fourth right connecting rod is rotatably connected with the second right connecting rod.

6. The collapsible child bassinet of claim 3, wherein, The two ends of the third U-shaped rod are fixedly provided with first connecting parts respectively, the two ends of the fourth U-shaped rod are fixedly provided with second connecting parts respectively, and the two ends of the handle rod are fixedly provided with third connecting parts respectively. The inner side surface of the first connecting part is fixedly provided with a central shaft extending towards the second connecting part, the second connecting part is rotatably connected with the first connecting part in a shape fit manner on the central shaft, the inner side surface of the second connecting part is fixedly provided with a circular convex ring protruding towards the first connecting part, the axis of the circular convex ring is coaxial with the axis of the central shaft, and the third connecting part is rotatably sleeved on the outer periphery of the circular convex ring. The inner side of the first connecting part is provided with a first matching cavity, the inner side of the second connecting part is provided with a second matching cavity, and the first matching cavity and the second matching cavity jointly form a first assembly cavity, the first assembly cavity is located on the inner side of the circular convex ring, and the first locking mechanism is arranged in the first assembly cavity.

7. The collapsible child's bassinet according to claim 6, wherein, The first locking mechanism comprises a driving member, a traction rope, a rotating member, a transmission member, a first locking member, a first elastic reset member and a second elastic reset member. The driving member is movably mounted on the third U-shaped rod, the traction rope is movably threaded in the third U-shaped rod, one end of the traction rope is connected with the driving member, and the other end is connected with the rotating member. The rotating member is rotatably sleeved on the central shaft, the rotating member is provided with an arc-shaped mounting groove matched with the rotating track thereof, the inner side surface of the first connecting part is provided with an abutment plate capable of extending into the arc-shaped mounting groove, the first elastic reset member is arranged in the arc-shaped mounting groove, one end of the first elastic reset member is in abutment with the abutment plate, and the other end is in abutment with the end wall of the arc-shaped mounting groove, and the first elastic reset member can provide a biasing force to the rotating member to reset it to an initial position. The transmission member is movably sleeved on the central shaft in the direction of the central shaft axis, a first inclined surface transmission structure is arranged between the transmission member and the rotating member, and the rotating movement of the rotating member is converted into the linear movement of the transmission member through the first inclined surface transmission structure. The first locking member is movably arranged in the first assembly cavity along the central axis direction, and the first locking member abuts against one end of the transmission member away from the rotating member; the first locking member has a locking position and an unlocking position: in the locking position, one end of the first locking member is connected with the first matching cavity, and the other end is connected with the second matching cavity; in the unlocking position, the first locking member is completely accommodated in the second matching cavity; The second elastic reset member is arranged at one end of the first locking member away from the transmission member, and one end of the second elastic reset member abuts against the end wall of the second matching cavity, and the other end abuts against the first locking member; the second elastic reset member can provide a biasing force to the first locking member to reset it to the locking position.

8. The collapsible child's bassinet according to claim 7, wherein, The first locking member and the first assembly cavity are provided with a guide structure for restricting the first locking member to move only along the central axis direction, the guide structure includes a guide block and a guide groove, the guide block is formed on the outer periphery of the first locking member, and the guide groove is formed on the inner wall of the first assembly cavity; and the guide structure is uniformly distributed around the circumferential direction of the central axis.

9. The collapsible child bassinet of claim 7, wherein, The first locking mechanism further comprises a second locking member and a third elastic reset member, the second connecting part is provided with a second assembly cavity, the second assembly cavity is located outside the circular convex ring, and the second assembly cavity and the first assembly cavity are communicated through a guide groove, and the third connecting part is provided with a clamping groove; The second locking member is movably arranged in the second assembly cavity along the central axis direction, and the second locking member has a locking position and an unlocking position: in the locking position, one end of the second locking member is connected with the second assembly cavity, and the other end is connected with the clamping groove; in the unlocking position, the second locking member is completely accommodated in the second assembly cavity; The third elastic reset member is arranged at one end of the second locking member away from the third connecting part, and one end of the third elastic reset member abuts against the end wall of the second assembly cavity, and the other end abuts against the second locking member; the third elastic reset member can provide a biasing force to the second locking member to reset it to the locking position.

10. The collapsible child's bassinet according to claim 9, wherein, The first locking member is provided with a first baffle on one side close to the guide groove, the second locking member is provided with a second baffle on one side close to the guide groove, and the first baffle and the second baffle both extend into the guide groove; when the first locking member moves from the locking position to the unlocking position, the first baffle can push the second baffle to drive the second locking member to move from the locking position to the unlocking position, and the moving stroke of the first locking member is greater than that of the second locking member.

11. The collapsible child bassinet of claim 9, wherein, The first locking mechanism further comprises a handle key and a fourth elastic reset member, the first connecting part is provided with a key hole, the handle key is movably arranged in the key hole along the central axis direction, and the inner side end of the handle key is fixedly provided with a pressing part; The guide groove penetrates the circular convex ring along the central axis direction, and the end wall of the keyhole is provided with a through hole communicating with the guide groove, and the through hole is arranged along the central axis direction; The handle key has a first limit position and a second limit position: in the first limit position, the pressing part is completely accommodated in the keyhole; during movement from the first limit position to the second limit position, the pressing part can push the second locking member to move from the locking position to the unlocking position through the through hole; The fourth elastic return member is arranged in the keyhole, one end of the fourth elastic return member abuts against the end wall of the keyhole, the other end of the fourth elastic return member abuts against the handle key, and the fourth elastic return member provides a biasing force to the handle key to reset the handle key to the first limit position; The second locking member is fixedly provided with a third baffle arranged separately from the second baffle on the side close to the guide groove, the third baffle extends into the guide groove, and during movement of the handle key from the first limit position to the second limit position, the pressing part can abut against the third baffle through the through hole.

12. The collapsible child bassinet of claim 2, wherein, The first support and the second support are each provided with a first limiting structure for limiting the rotating direction and angle of the first U-shaped rod and the second U-shaped rod; The first limiting structure comprises a first limiting groove provided in the first support and the second support and a first limiting block fixed to both ends of the first U-shaped rod and both ends of the second U-shaped rod, the first limiting groove is a circular arc groove, the center of the first limiting groove corresponds to the rotating axis of the first U-shaped rod or the rotating axis of the second U-shaped rod, and the first limiting block is in sliding fit with the first limiting groove.

13. The collapsible child bassinet of claim 2, wherein, The first support and the second support each comprise a fixed seat and a rotating seat, the fixed seat is used for connecting a vehicle frame, a fixed shaft parallel to the central shaft is fixedly arranged on the inner side of the fixed seat, and the rotating seat is rotatably connected to the fixed shaft; The outer middle part of the rotating seat of the first support is rotatably connected to the first end of the first U-shaped rod and the first end of the second U-shaped rod, respectively, and the outer top part of the rotating seat of the first support is rotatably connected to the lower end of the first left connecting rod and the lower end of the second left connecting rod, respectively; The outer middle part of the rotating seat of the second support is rotatably connected to the second end of the first U-shaped rod and the second end of the second U-shaped rod, respectively, and the outer top part of the rotating seat of the second support is rotatably connected to the lower end of the first right connecting rod and the lower end of the second right connecting rod, respectively.

14. The collapsible child's bassinet according to claim 13, wherein, The inner side of the fixed seat is provided with a third matching cavity, the inner side of the rotating seat is provided with a fourth matching cavity, the third matching cavity and the fourth matching cavity jointly form a third assembly cavity, and the second locking mechanism is arranged in the third assembly cavity.

15. The collapsible child's bassinet according to claim 14, wherein, The second locking mechanism comprises a sliding block, a sliding rod, a driving shaft and a fifth elastic return member; The third assembly cavity is provided with a first sliding groove, the axis of the first sliding groove is parallel to the axis of the fixed shaft, the sliding block is arranged in the first sliding groove and can only move along the axis direction of the first sliding groove; The fourth matching cavity is provided with a second sliding groove, an axis of the second sliding groove is perpendicular to an axis of the first sliding groove and is communicated, and the second sliding groove is provided with a cavity matched with the shape of the sliding block at an intersection with the first sliding groove; The sliding rod is arranged in the second sliding groove and can only move along the axis direction of the second sliding groove, and the second sliding groove is provided with a avoiding hole at one end close to a rotation fulcrum of any one of the first U-shaped rod and the second U-shaped rod; An axis of the driving shaft is parallel to a rotation axis of the first U-shaped rod or a rotation axis of the second U-shaped rod, one end of the driving shaft is fixedly connected with the first U-shaped rod or the second U-shaped rod adjacent to the avoiding hole, the sliding rod is provided with a connecting hole into which the other end of the driving shaft is vertically inserted, the connecting hole is larger than an outer diameter of the driving shaft, so that the driving shaft can be offset in the connecting hole to avoid motion interference; The second inclined surface transmission structure is arranged between the sliding rod and the sliding block, and linear motion of the sliding rod is converted into linear motion of the sliding block through the second inclined surface transmission structure; The sliding block has a locking position and an unlocking position, in the locking position, one end of the sliding block is connected with the first sliding groove, and the other end is connected with the cavity, and in the unlocking position, the sliding block is completely accommodated in the first sliding groove; The fifth elastic reset member is arranged at one end of the sliding block away from the sliding rod, one end of the fifth elastic reset member is abutted against an end wall of the third matching cavity, and the other end is abutted against the sliding block, and the fifth elastic reset member can provide a biasing force to the sliding block to reset the sliding block to the locking position.

16. The collapsible child's bassinet according to claim 14, wherein, The third matching cavity is provided with a third sliding groove, the third sliding groove is located at the bottom of the fixed seat, and an axis of the third sliding groove is perpendicular to a horizontal plane; The fourth matching cavity is provided with a fourth sliding groove, the fourth sliding groove includes a straight sliding groove and a circular arc sliding groove which are communicated with each other, an axis of the straight sliding groove is perpendicular to an axis of the fixed shaft in different planes, and the straight sliding groove extends outwardly and obliquely from the middle part of the third matching cavity; a center of the circular arc sliding groove coincides with the fixed shaft, and the circular arc sliding groove is located on the outer side of the straight sliding groove; A touch block is slidably arranged in the third sliding groove, the touch block is fixedly connected with a transmission round rod which can extend into the fourth sliding groove, and the transmission round rod is slidably connected with the fourth sliding groove; When the rotating seat rotates around the fixed shaft, the straight sliding groove can press the transmission round rod to drive the touch block to move downward, and the touch block extends from the bottom of the fixed seat to touch the locking structure of the vehicle frame; when the transmission round rod slides from the straight sliding groove to the circular arc sliding groove, the extension state of the touch block can be kept unchanged under continuous rotation of the rotating seat.

17. The collapsible child bassinet of claim 13, wherein, The second limiting structure is arranged between the rotating seat and the fixed seat to limit the relative rotation direction and angle of the two. The second limiting structure comprises a second limiting groove provided in the rotating seat and a second limiting block fixed to the fixed seat, the second limiting groove is a circular arc groove, the center of the second limiting groove coincides with the axis of the fixed shaft, and the second limiting block is in sliding fit with the second limiting groove.

18. The collapsible bassinet of claim 13, wherein, The fixed seat is provided with a mounting mechanism capable of locking the fixed seat to a vehicle frame.

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