Foldable child bed

Abstract

A foldable child bed. The foldable child bed has a folded state and an unfolded state. In the unfolded state, a first bottom rod (2121) and a first bottom frame pull rod (211) corresponding thereto are arranged at a first set angle, and a second bottom rod (2122) and a first bottom frame pull rod (211) corresponding thereto are arranged at a second set angle. In the folded state, the first bottom rod (2121) and the first bottom frame pull rod (211) corresponding thereto are arranged at a third set angle, and the second bottom rod (2122) and the first bottom frame pull rod (211) corresponding thereto are arranged at a fourth set angle.

Description

Foldable children's bed

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 27, 2023, with application number 202311831838.0 and application name “Foldable Children’s Bed”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of children's products, and in particular to a foldable children's bed. Background Art

[0004] At present, in order to provide children with a relatively safe space when playing or resting, various foldable children's beds have become one of the featured products in the children's market. Although the existing foldable children's beds have the characteristics of being able to surround an independent and enclosed space when unfolded and taking up less space when folded, all the support rods arranged along the height direction of the foldable children's beds are in a vertical position when the foldable children's beds are in the folded state, which leads to poor stability of the foldable children's beds in the folded state and easy to tip over.

[0005] Application Contents

[0006] In order to solve the above technical problems, the present application provides a foldable children's bed.

[0007] In a first aspect, the present application provides a foldable children's bed, comprising an upper frame, a lower frame, a support rod, a center seat, a first hinge seat, and a second hinge seat; the upper frame comprises a plurality of first link groups with foldable middle portions, wherein the plurality of first link groups are connected end to end in a horizontal direction to form the upper frame in a ring structure; the number of the support rods, the first hinge seats, and the second hinge seats is the same as the number of the first link groups, the first end and the second end of each support rod are connected to one of the first hinge seats and one of the second hinge seats respectively, and the two ends of each first link group are respectively hinged to two adjacent first hinge seats; the lower frame comprises a plurality of second link groups, the number of which is the same as the number of the first link groups;

[0008] A plurality of second-link rod groups are circumferentially arranged on the peripheral side of the center seat, one of the second-link rod groups includes a bottom frame first pull rod and a bottom frame second pull rod foldable in the middle portion, which are sequentially arranged downward in the height direction, and all other second-link rod groups include a bottom frame first pull rod and a bottom frame third pull rod, which are sequentially arranged downward in the height direction; the first end of each of the bottom frame first pull rods is hinged to the center seat, and the second end is hinged to the corresponding second hinge seat; the first end of each of the bottom frame third pull rods is hinged to the center seat, and the second end is hinged to the corresponding second hinge seat; the bottom frame second pull rods include a first bottom rod and a second bottom rod, the first end of the first bottom rod is hinged to the center seat, the second end is hinged to the first end of the second bottom rod through a first pivot, and the second end of the second bottom rod is hinged to the corresponding second hinge seat;

[0009] The foldable children's bed has a folded state and an unfolded state; in the unfolded state, the first bottom bar and the corresponding first pull rod of the bottom frame form a first set angle, and the second bottom bar and the corresponding first pull rod of the bottom frame form a second set angle; in the folded state, the first bottom bar and the corresponding first pull rod of the bottom frame form a third set angle, and the second bottom bar and the corresponding first pull rod of the bottom frame form a fourth set angle; the sum of the first set angle and the second set angle is greater than the sum of the third set angle and the fourth set angle.

[0010] Optionally, the second bottom frame pull rod further includes a bottom rod connecting member, one end of the bottom rod connecting member is hinged to the first pivot, and the other end is hinged to the middle portion of the first bottom frame pull rod corresponding to the second bottom frame pull rod.

[0011] Optionally, it further includes a first locking assembly, the first locking assembly including a first locking block movably plugged into the first end of the first pull rod of the bottom frame, a first unlocking block rotatably arranged on the center seat, and a first elastic member;

[0012] The two ends of the first elastic member are respectively connected to the first locking block and the first pull rod of the bottom frame, and are used to provide an elastic force for the first locking block to move away from the second end of the first pull rod of the bottom frame;

[0013] The first unlocking block is provided with an inclined surface structure that slides with the first locking block;

[0014] In the expanded state, the first locking block extends out of the first end of the first pull rod of the bottom frame, and the bottom of the extended end of the first locking block abuts against the inclined structure on the first unlocking block, and the top of the extended end of the first locking block abuts against the center seat.

[0015] Optionally, a torsion spring structure is provided at the rotational connection between the first unlocking block and the center seat, and the torsion spring structure is used to provide an elastic force to drive the first unlocking block to rotate toward the position in the expanded state.

[0016] Optionally, the number of the first locking assemblies is the same as the number of the first pull rods of the bottom frame, and they are arranged along the circumference of the center seat.

[0017] Optionally, two or more adjacent first unlocking blocks are connected by an unlocking handle; there are multiple unlocking handles, and the multiple unlocking handles are connected by a cable.

[0018] Optionally, the first connecting rod assembly includes two oppositely arranged top rods and an upper frame connecting member;

[0019] The upper frame connecting member is provided with two sets of oppositely arranged locking groove sections and avoidance sections. In the expanded state, the locking groove sections are parallel to the extension direction of the ejector rods. The locking groove sections and the corresponding avoidance sections are connected to form a sliding space. The first ends of the two ejector rods are each provided with a second pivot. The two second pivots are respectively slidably connected to the corresponding sliding spaces. The second ends of the two ejector rods are respectively hinged to the corresponding first hinge seats.

[0020] The push rod is also provided with a third pivot. A push rod sliding groove is provided on the push rod along the extension direction of the push rod, which is slidably matched with the third pivot. The third pivot is rotatably connected to the upper frame connecting piece.

[0021] Optionally, the first end of the lock slot section is connected to the avoidance section, and the second end extends toward the lock slot section arranged opposite thereto. In the expanded state, the third pivot is located at an end of the push rod slide slot away from the second pivot, and the second pivot is located at the second end of the lock slot section; the third pivot is elastically connected to the second pivot or the push rod through a second elastic member, and the second elastic member is used to provide the third pivot with an elastic force in a direction away from the second pivot.

[0022] Optionally, a supporting plane is provided at the top of the center seat, and a support column is provided at the bottom of the center seat; in the expanded state, the supporting plane is horizontal and is coplanar or parallel to the plane formed by the tops of the multiple first pull rods of the bottom frame, and the bottom of the support column is coplanar with the plane formed by the bottoms of the multiple second hinged seats.

[0023] Optionally, at least two adjacent second hinged seats are provided with rollers.

[0024] The technical solution provided by the embodiments of the present application has the following advantages compared with the prior art:

[0025] The foldable children's bed provided by the present application can form a stable support base when in the unfolded state through the arrangement of multiple second connecting rod groups, thereby ensuring the stability and reliability of the children's bed itself. At the same time, the extension directions of multiple first pull rods and third pull rods of the bottom frame are all horizontal, thereby forming a parallelogram structure, which can ensure the support strength in the horizontal direction; through the cooperation of the first pull rod of the bottom frame and the second pull rod of the bottom frame in one of the second connecting rod groups, the first bottom rod and the second bottom rod can form a first set angle and a second set angle with the first pull rod of the bottom frame respectively in the unfolded state, and in the folded state, the first bottom rod and the second bottom rod can form a first set angle and a second set angle with the first pull rod of the bottom frame respectively. The bottom rod and the second bottom rod form a third set angle and a fourth set angle with the first pull rod of the bottom frame respectively. By setting the sum of the first set angle and the second set angle to be greater than the sum of the third set angle and the fourth set angle, all the support rods of the children's bed can be in a vertical stable support state when the children's bed is in the unfolded state. In the folded state, the bottom of the support rod connected to the second pull rod of the bottom frame can protrude to the side away from the center seat, thereby increasing the support area of ​​the entire children's bed and the ground, and improving the support stability of the children's bed in the folded state; at the same time, it also does not have much impact on the space occupied by the children's bed itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] FIG1 is a schematic structural diagram of a foldable children's bed in an unfolded state according to an embodiment of the present application;

[0029] FIG2 is a schematic structural diagram of the foldable children's bed according to an embodiment of the present application when folded halfway;

[0030] FIG3 is a schematic structural diagram of the foldable children's bed according to an embodiment of the present application in a folded state;

[0031] FIG4 is a schematic structural diagram of the connection between the center seat and the first pull rod of the bottom frame of the foldable children's bed according to an embodiment of the present application;

[0032] FIG5 is a schematic structural diagram of a first locking assembly in a foldable children's bed according to an embodiment of the present application;

[0033] FIG6 is a schematic structural diagram of the top rod and upper frame connecting member in the foldable children's bed according to an embodiment of the present application.

[0034] Among them, 1. upper frame; 11. first connecting rod group; 111. top rod; 112. upper frame connecting piece; 1121. lock slot section; 1122. avoidance section; 113. top rod slide; 114. second elastic member; 2. lower frame; 21. second connecting rod group; 211. first pull rod of bottom frame; 212. second pull rod of bottom frame; 2121. first bottom rod; 2122. second bottom rod; 2123. bottom rod connecting piece; 213. third pull rod of bottom frame; 3. support rod; 4. center seat; 41. supporting plane; 42. support column; 51. first hinge seat; 52. second hinge seat; 61. first pivot; 62. second pivot; 63. third pivot; 71. first locking block; 72. first unlocking block; 73. first elastic member; 81. unlocking handle; 82. cable; 9. roller. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, not all of the embodiments.

[0037] At present, in order to provide children with a relatively safe space when playing or resting, various foldable children's beds have become one of the featured products in the children's market. Although the existing foldable children's beds have the characteristics of being able to surround an independent and enclosed space when unfolded and taking up less space when folded, all the support rods arranged along the height direction of the foldable children's beds are in a vertical position when the foldable children's beds are in the folded state, which leads to poor stability of the foldable children's beds in the folded state and easy to tip over.

[0038] Based on this, the present embodiment provides a foldable children's bed. When in the unfolded state, the lower frame can form a stable support base through the arrangement of multiple second link groups, thereby ensuring the stability and reliability of the children's bed itself. At the same time, the extension directions of multiple first pull rods and third pull rods of the bottom frame are all horizontal, thereby forming a parallelogram structure, which can ensure the support strength in the horizontal direction; through the cooperation of the first pull rod of the bottom frame and the second pull rod of the bottom frame in one of the second link groups, the first bottom rod and the second bottom rod can form a first set angle and a second set angle with the first pull rod of the bottom frame respectively in the unfolded state, and when in the folded state The first bottom bar and the second bottom bar respectively form a third set angle and a fourth set angle with the first pull rod of the bottom frame. By setting the sum of the first set angle and the second set angle to be greater than the sum of the third set angle and the fourth set angle, when the child bed is in the unfolded state, all the support bars can be in a vertical and stable support state. When in the folded state, the bottom of the support bar connected to the second pull rod of the bottom frame can protrude to the side away from the center seat, thereby increasing the support area of ​​the entire child bed and the ground, improving the support stability of the child bed in the folded state; at the same time, it does not have much impact on the space occupied by the child bed itself. The following is a detailed description of this through specific embodiments:

[0039] 1 to 6, a foldable children's bed provided in this embodiment includes an upper frame 1, a lower frame 2, a support rod 3, a center seat 4, a first hinge seat 51 and a second hinge seat 52; the upper frame 1 includes a plurality of first connecting rod groups 11 with foldable middle parts, and the plurality of first connecting rod groups 11 are connected end to end in the horizontal direction to form an upper frame 1 of an annular structure; the number of the support rods 3, the first hinge seat 51 and the second hinge seat 52 is the same as the number of the first connecting rod groups 11, and the first end and the second end of each support rod 3 correspond to one of the first hinge seats 51 and one of the first hinge seats 51. The lower frame 2 includes a plurality of second link groups 21 having the same number as the first link groups 11; the plurality of second link groups 21 are arranged circumferentially on the peripheral side of the center seat 4, and one of the second link groups 21 includes a bottom frame first pull rod 211 and a bottom frame second pull rod 212 foldable in the middle portion arranged in sequence downward in the height direction, and all other second link groups 21 include a bottom frame first pull rod 211 and a bottom frame third pull rod 213 arranged in sequence downward in the height direction; each The first end of each bottom frame first tie rod 211 is hinged to the center seat 4, and the second end is hinged to the corresponding second hinge seat 52; the first end of each bottom frame third tie rod 213 is hinged to the center seat 4, and the second end is hinged to the corresponding second hinge seat 52; the bottom frame second tie rod 212 includes a first bottom rod 2121 and a second bottom rod 2122, the first end of the first bottom rod 2121 is hinged to the center seat 4, and the second end is hinged to the first end of the second bottom rod 2122 through the first pivot 61, and the second end of the second bottom rod 2122 is hinged to the corresponding second hinge seat 52; foldable The children's bed has a folded state and an unfolded state; in the unfolded state, the first bottom bar 2121 and the corresponding first pull rod 211 of the bottom frame form a first set angle, and the second bottom bar 2122 and the corresponding first pull rod 211 of the bottom frame form a second set angle; in the folded state, the first bottom bar 2121 and the corresponding first pull rod 211 of the bottom frame form a third set angle, and the second bottom bar 2122 and the corresponding first pull rod 211 of the bottom frame form a fourth set angle; the sum of the first set angle and the second set angle is greater than the sum of the third set angle and the fourth set angle.

[0040] The foldable children's bed provided in this embodiment can form a stable support base when in the unfolded state through the arrangement of multiple second connecting rod groups 21, thereby ensuring the stability and reliability of the children's bed itself. At the same time, the extension directions of multiple bottom frame first pull rods 211 and bottom frame third pull rods 213 are all horizontal, thereby forming a parallelogram structure, which can ensure the support strength in the horizontal direction; through the cooperation of the bottom frame first pull rod 211 and the bottom frame second pull rod 212 in one of the second connecting rod groups 21, the first bottom rod 2121 and the second bottom rod 2122 can form a first set angle and a second set angle with the bottom frame first pull rod 211 respectively when in the unfolded state, and the folded When in the folded state, the first bottom rod 2121 and the second bottom rod 2122 form a third set angle and a fourth set angle with the first pull rod 211 of the bottom frame respectively. By setting the sum of the first set angle and the second set angle to be greater than the sum of the third set angle and the fourth set angle, all the support rods 3 of the child bed can be in a vertical stable support state when the child bed is in the unfolded state. When in the folded state, the bottom of the support rod 3 connected to the second pull rod 212 of the bottom frame can protrude to the side away from the center seat 4, thereby increasing the support area of ​​the entire child bed and the ground, and improving the support stability of the child bed in the folded state; at the same time, it also does not have much impact on the occupied space of the child bed itself.

[0041] In some embodiments, the bottom frame second pull rod 212 also includes a bottom rod connecting member 2123, one end of the bottom rod connecting member 2123 is hinged to the first pivot 61, and the other end is hinged to the middle part of the bottom frame first pull rod 211 corresponding to the bottom frame second pull rod 212; the bottom rod connecting member 2123 can connect the bottom frame second pull rod 212 with the bottom frame first pull rod 211, provide support and limit for the connection between the first bottom rod 2121 and the second bottom rod 2122, and prevent the first bottom rod 2121 and the second bottom rod 2122 from swinging too much; at the same time, it can also ensure that the connection between the first bottom rod 2121 and the second bottom rod 2122 is more stable when in the expanded state; wherein the bottom rod connecting member 2123 can be pivoted to the middle part of the bottom frame first pull rod 211 through a pivot parallel to the first pivot 61.

[0042] 4 and 5 , the foldable children's bed further comprises a first locking assembly, which comprises a first locking block 71 movably connected to the first end of the first pull rod 211 of the bottom frame, a first unlocking block 72 and a first elastic member 73 rotatably provided on the center seat 4; the two ends of the first elastic member 73 are respectively connected to the first locking block 71 and the first pull rod 211 of the bottom frame, and are used to provide an elastic force for the second end of the first locking block 71 to move away from the first pull rod 211 of the bottom frame; the first unlocking block 72 is provided with an inclined structure that slidably cooperates with the first locking block 71; in the unfolded state, the first locking block 71 extends out of the first end of the first pull rod 211 of the bottom frame, and the bottom of the extended end of the first locking block 71 abuts against the inclined structure on the first unlocking block 72, and the top of the extended end of the first locking block 71 abuts against the center seat 4; that is, in the unfolded state, the extended end of the first locking block 71 can be locked by the inclined structure on the first unlocking block 72 and the center seat 4 at the same time, thereby preventing the first pull rod 211 of the bottom frame and the center seat 4 from rotating relative to each other.

[0043] In some embodiments, a torsion spring structure is provided at the rotational connection between the first unlocking block 72 and the center seat 4, and the torsion spring structure is used to provide an elastic force to drive the first unlocking block 72 to rotate toward the position in the expanded state; through this torsion spring structure, the first unlocking block 72 can always form an extrusion effect on the first locking block 71 in the expanded state, thereby maintaining the locking effect of the center seat 4 on the first locking block 71.

[0044] In a further embodiment, the number of first locking assemblies is the same as the number of bottom frame first pull rods 211, and are arranged along the circumference of the center seat 4; wherein, the upper frame 1 may include four first connecting rod groups 11 with foldable middle parts, and the lower frame 2 may include four bottom frame first pull rods 211, three bottom frame third pull rods 213 and one bottom frame second pull rod 212, that is, the upper frame 1 is a quadrilateral frame structure, and the lower frame 2 forms an X-shaped frame structure coinciding with the diagonal of the upper frame 1. Specifically, the upper frame 1 may be a square frame structure or a rectangular frame structure; in other embodiments, the upper frame 1 may also include three, five, six or other first connecting rod groups 11 with foldable middle parts, as long as a top frame surrounding a closed space can be formed.

[0045] Continuing with reference to Figures 1 to 5, two or more adjacent first unlocking blocks 72 are connected by an unlocking handle 81; the number of unlocking handles 81 is multiple, and the multiple unlocking handles 81 are connected by a cable 82; the rotating shafts of all first unlocking blocks 72 connected by the same unlocking handle 81 are coaxially arranged to form the rotating shaft of the unlocking handle 81. At this time, the extension direction of each first unlocking block 72 can be inclined at a set angle to its rotating shaft to ensure that the moving directions of the first unlocking block 72 and the corresponding first locking block 71 are relatively arranged without interfering with the rotation action; the cable 82 can be composed of multiple retractable pull rods or a flexible pull belt. The composition is as long as the connecting end and the pulling end of the cable 82 and the unlocking handle 81 can have a certain amount of activity, so that the action of pulling the cable 82 upward will not interfere with the rotation of the unlocking handle 81; when the cable 82 of the children's bed in this application is pulled upward, the cable 82 will drive all the unlocking handles 81 to rotate, and the unlocking handle 81 will drive the first unlocking block 72 to rotate. The inclined structure of the first unlocking block 72 will return the corresponding first locking block 71 to the corresponding first pull rod 211 of the bottom frame. At this time, the first pull rod 211 of the bottom frame can rotate with the center seat 4, and the cable 82 is continued to be pulled upward, and all the second connecting rod groups 21 begin to change to the folded state.

[0046] 6, the first connecting rod group 11 includes two oppositely arranged top rods 111 and an upper frame connecting member 112; the upper frame connecting member 112 is provided with two sets of oppositely arranged locking groove sections 1121 and avoidance sections 1122. When in the expanded state, the locking groove sections 1121 are parallel to the extension direction of the top rod 111, and the locking groove sections 1121 and the corresponding avoidance sections 1122 are connected to form a sliding space. The first ends of the two top rods 111 are provided with a second pivot 62, and the two second pivots 62 are respectively slidably connected to the corresponding sliding spaces. The second ends of the two top rods 111 are respectively hinged to the corresponding first hinge seats 51; the top rod 111 is also provided with a third pivot The third pivot 62 is rotatably connected to the upper frame connecting piece 112 by means of a push rod slot 113 and a push rod groove 113 arranged along the extension direction of the push rod 111. The third pivot 63 is rotatably connected to the upper frame connecting piece 112. It should be understood that when in the unfolded state, the second pivot 62 is located in the locking groove section 1121. When the unfolded state is switched to the folded state, the second pivot 62 will slide into the avoidance section 1122. The avoidance section 1122 has an arc-shaped structure as a whole to cooperate with the rotation of the push rod 111. The sliding cooperation between the third pivot 63 and the push rod slot 113 can prevent the second pivot 62 from forming a dead point in the sliding space, thereby improving the flexibility between the push rod 111 and the upper frame connecting piece 112.

[0047] In some embodiments, the first end of the lock groove section 1121 is connected to the avoidance section 1122, and the second end extends toward the lock groove section 1121 arranged opposite thereto. In the unfolded state, the third pivot 63 is located at one end of the top rod slide groove 113 away from the second pivot 62, and the second pivot 62 is located at the second end of the lock groove section 1121; the third pivot 63 is elastically connected to the second pivot 62 or the top rod 111 through the second elastic member 114, and the second elastic member 114 is used to provide the third pivot 63 with an elastic force in the direction away from the second pivot 62; that is, the setting of the second elastic member 114 can make the second pivot 62 and the third pivot 63 have an elastic force towards each other, and at this time the second end of the lock groove section 1121 also extends in the direction away from the third pivot 63, so that the child bed can be moved from the folded state to the unfolded state. When the open state changes, when the second pivot 62 slides from the avoidance section 1122 to the first end of the lock groove section 1121, it automatically moves toward the second end of the lock groove section 1121 through the elastic force of the second elastic member 114, so as to achieve the purpose of locking the upper frame 1; wherein the second elastic member 114 can also be a tension spring, that is, the first end of the lock groove section 1121 is connected to the avoidance section 1122, and the second end extends toward the third pivot 63, and the second elastic member 114 is used to provide the third pivot 63 with an elastic force in the direction close to the second pivot 62; when the lower frame 2 is retracted to the folded state, the force will be transmitted to the corresponding first hinge seat 51 through all the support rods 3, and all the first hinge seats 51 will squeeze the top rod 111 and form a torsional force, causing the second pivot 62 to slide from the lock groove section 1121 to the avoidance section 1122.

[0048] In a further embodiment, a supporting plane 41 is provided at the top of the center seat 4, and a support column 42 is provided at the bottom of the center seat 4; when in the unfolded state, the supporting plane 41 is horizontal and is coplanar or parallel to the plane formed by the tops of the multiple bottom frame first pull rods 211, and the bottom of the support column 42 is coplanar with the plane formed by the bottoms of the multiple second hinged seats 52; wherein, the top surfaces of all unlocking handles 81 are coplanar with the supporting plane 41 when the child's bed is in the unfolded state, and through the setting of the supporting plane 41, the top of the center seat 4 can form a reliable and stable support platform for the entire enclosed space; the support column 42 set at the bottom can further improve the stability of the child's bed in the unfolded state.

[0049] In some embodiments, rollers 9 are provided on at least two adjacent second articulated seats 52; wherein, the rollers 9 can be provided only on the second articulated seat 52 connected to the third pull rod 213 of the bottom frame to prevent the rollers 9 from extending outward following the second articulated seat 52 connected to the second pull rod 212 of the bottom frame, affecting excessive occupied space; the provision of the rollers 9 can significantly improve the mobility of the entire children's bed in any state; in a further embodiment, a brake structure can be provided on the rollers 9, and when the children's bed does not need to be moved, the rollers 9 are braked to form a stable support structure.

[0050] The specific implementation method and implementation principle are the same as those in the above embodiment, and can bring the same or similar technical effects, which will not be described here one by one. For details, please refer to the description of the above embodiment of the foldable children's bed.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0052] The foregoing description is intended only to provide specific embodiments of the present application, which will enable those skilled in the art to understand and implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments described herein, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A foldable children's bed, comprising an upper frame, a lower frame, support rods, a central seat, a first hinge seat and a second hinge seat; the upper frame includes a plurality of first link groups with foldable middle parts, and the plurality of first link groups are connected end to end in sequence along the horizontal direction to form the annular upper frame; the numbers of the support rods, the first hinge seat and the second hinge seat are all the same as the number of the first link groups, the first end and the second end of each support rod are respectively connected to one of the first hinge seats and one of the second hinge seats, and both ends of each first link group are respectively hinged to two adjacent first hinge seats; the lower frame includes a plurality of second link groups with the same number as the first link groups; The plurality of second link groups are arranged circumferentially on the periphery of the central seat. One of the second link groups includes a bottom frame first pull rod and a bottom frame second pull rod with a foldable middle part arranged in sequence downward along the height direction, and all the other second link groups include a bottom frame first pull rod and a bottom frame third pull rod arranged in sequence downward along the height direction; the first end of each bottom frame first pull rod is hinged to the central seat, and the second end is hinged to the corresponding second hinge seat; the first end of each bottom frame third pull rod is hinged to the central seat, and the second end is hinged to the corresponding second hinge seat; the bottom frame second pull rod includes a first bottom rod and a second bottom rod, the first end of the first bottom rod is hinged to the central seat, the second end is hinged to the first end of the second bottom rod through a first pivot, and the second end of the second bottom rod is hinged to the corresponding second hinge seat; The foldable children's bed has a folded state and an unfolded state; in the unfolded state, a first set angle is formed between the first bottom rod and the corresponding bottom frame first pull rod, and a second set angle is formed between the second bottom rod and the corresponding bottom frame first pull rod; in the folded state, a third set angle is formed between the first bottom rod and the corresponding bottom frame first pull rod, and a fourth set angle is formed between the second bottom rod and the corresponding bottom frame first pull rod; the sum of the first set angle and the second set angle is greater than the sum of the third set angle and the fourth set angle.

2. The foldable children's bed according to claim 1, wherein the bottom frame second pull rod further includes a bottom rod connecting piece, one end of the bottom rod connecting piece is hinged to the first pivot, and the other end is hinged to the middle part of the bottom frame first pull rod corresponding to the bottom frame second pull rod.

3. The foldable children's bed according to claim 1 or 2, further comprising a first locking assembly, the first locking assembly includes a first lock block movably inserted into the first end of the bottom frame first pull rod, a first unlocking block rotatably arranged on the central seat and a first elastic member; Both ends of the first elastic member are respectively connected to the first lock block and the bottom frame first pull rod, and are used to provide an elastic force for the first lock block away from the second end of the bottom frame first pull rod; The first unlocking block is provided with an inclined surface structure slidably matched with the first lock block; In the unfolded state, the first locking block extends out of the first end of the first pull rod of the bottom frame, and the bottom of the extended end of the first locking block abuts against the inclined surface structure on the first unlocking block, and the top of the extended end of the first locking block abuts against the center seat.

4. The foldable baby crib according to claim 3, wherein a torsion spring structure is provided at the rotational connection between the first unlocking block and the center seat, and the torsion spring structure is configured to provide an elastic force for driving the first unlocking block to rotate to the position in the unfolded state.

5. The foldable baby crib according to claim 3, wherein the number of the first locking assemblies is the same as the number of the first pull rods of the bottom frame and is arranged circumferentially along the center seat.

6. The foldable baby crib according to claim 5, wherein two or more adjacent first unlocking blocks are connected by an unlocking handle; the number of the unlocking handles is multiple, and the multiple unlocking handles are connected by a cable.

7. The foldable baby crib according to any one of claims 1 to 6, wherein the first link group includes two oppositely arranged top rods and an upper frame connecting member; two sets of oppositely arranged locking groove sections and avoidance sections are formed on the upper frame connecting member. In the unfolded state, the locking groove sections are parallel to the extending direction of the top rods, and the locking groove sections communicate with the corresponding avoidance sections to form a sliding space. The first ends of the two top rods are each provided with a second pivot, and the two second pivots are respectively slidably connected to the corresponding sliding spaces. The second ends of the two top rods are respectively hinged to the corresponding first hinge seats; a third pivot is further provided on the top rod, and a top rod sliding groove slidably engaged with the third pivot is formed on the top rod along the extending direction of the top rod, and the third pivot is rotatably connected to the upper frame connecting member.

8. The foldable baby crib according to claim 7, wherein the first end of the locking groove section communicates with the avoidance section, and the second end extends towards the locking groove section oppositely arranged thereto. In the unfolded state, the third pivot is located at the end of the top rod sliding groove away from the second pivot, and the second pivot is located at the second end of the locking groove section; the third pivot is elastically connected to the second pivot or the top rod by a second elastic member, and the second elastic member is configured to provide an elastic force for the third pivot in a direction away from the second pivot.

9. The foldable baby crib according to any one of claims 1 to 8, wherein a supporting plane is provided on the top of the center seat, and a supporting column is provided at the bottom of the center seat; in the unfolded state, the supporting plane is in a horizontal state and is coplanar or parallel to the plane formed by the tops of the multiple first pull rods of the bottom frame, and the bottom of the supporting column is coplanar with the plane formed by the bottoms of the multiple second hinge seats.

10. The foldable baby crib according to any one of claims 1 to 9, wherein rollers are provided on at least two adjacent second hinge seats. ​

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