Baby crib

Abstract

The utility model relates to a baby crib. The baby crib comprises side frames, a surrounding rod assembly, a joint lock assembly and an unlocking assembly. The surrounding rod assembly comprises a first rod piece and a second rod piece, the first rod piece is rotationally connected with one side frame, the second rod piece is rotationally connected with the other side frame, and the first rod piece is connected with the second rod piece through a joint lock assembly. The joint lock assembly has a locking state and an unlocking state, when the baby crib is unfolded, the joint lock assembly is in the locking state, the first rod piece and the second rod piece are fixed relative to the side frame, and in the unlocking state, the first rod piece and the second rod piece can rotate relative to the side frame. The unlocking assembly comprises an unlocking key and a control module, the unlocking key can output an unlocking instruction after being triggered, the control module is in communication connection with the unlocking key, and the control module is used for controlling the joint lock assembly to be switched from the locking state to the unlocking state after receiving the unlocking instruction. In this way, unlocking is achieved in an electronic mode, unlocking operation is simplified, and the user experience feeling can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of baby products, in particular to a baby bed. BACKGROUND

[0002] The baby bed refers to a bed specially used for infants and young children, which can provide a comfortable and safe sleeping environment for infants and young children. Compared with the baby bed with a fixed structure, the foldable baby bed can be switched between the unfolded and folded structures, and can better meet various use scenarios such as use, storage and transportation, and thus is more popular among families.

[0003] However, the unlocking design of the foldable baby bed in the related art is complex, the unlocking is cumbersome, and the user experience is not good. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a baby bed to simplify the unlocking operation and improve the user experience.

[0005] A baby bed comprises:

[0006] Two side frames are provided, and the two side frames are oppositely and spacedly arranged;

[0007] A surrounding rod assembly is arranged between the two side frames, and the surrounding rod assembly comprises a first rod member and a second rod member, the first end of the first rod member is rotatably connected to one of the side frames, and the first end of the second rod member is rotatably connected to the other side frame;

[0008] A joint lock assembly rotatably connects the second end of the first rod member and the second end of the second rod member, the joint lock assembly has a locked state and an unlocked state, when the baby bed is unfolded, the joint lock assembly is in the locked state, the first rod member and the second rod member are fixed relative to the side frames, and in the unlocked state, the first rod member and the second rod member can rotate relative to the side frames; and

[0009] An unlocking assembly comprises an unlocking key and a control module, the unlocking key can output an unlocking instruction after being triggered, the control module is in communication connection with the unlocking key, and the control module is used to control the joint lock assembly to switch from the locked state to the unlocked state after receiving the unlocking instruction.

[0010] In one embodiment, the unlocking assembly further comprises a child lock key, the child lock key is used to lock the unlocking key, so that the unlocking key cannot output the unlocking instruction, and after the child lock key is triggered, the unlocking key can output the unlocking instruction.

[0011] In one of the embodiments, two of the rail assemblies are arranged between the side frames; and two of the joint lock assemblies are arranged in one-to-one correspondence with the two rail assemblies.

[0012] In one of the embodiments, the unlocking assembly further comprises a driving mechanism, the driving mechanism comprising a driving module and a linkage, the driving module being in communication connection with the control module; the linkage comprising two linkage members, the two linkage members being connected with the driving module, one end of one of the linkage members being connected with one of the joint lock assemblies, and one end of the other linkage member being connected with the other joint lock assembly.

[0013] In one of the embodiments, the driving module comprises a driving member, a rack and an unlocking crank, the driving member being in communication connection with the control module, an output end of the driving member being provided with a gear, the gear being in meshing transmission with the rack; the unlocking crank being rotatably connected with the side frame, the unlocking crank having an abutting end for abutting cooperation with the rack; one of the linkage members being connected with the rack, and the other linkage member being connected with the unlocking crank.

[0014] In one of the embodiments, the driving module further comprises an unlocking connecting rod and a first sliding member, the unlocking connecting rod being rotatably connected with the unlocking crank; the first sliding member comprising two first sliding members, one of the first sliding members being connected with the rack, and the other first sliding member being connected with the unlocking connecting rod, the two linkage members being connected with the two first sliding members in one-to-one correspondence.

[0015] In one of the embodiments, the unlocking assembly further comprises a first elastic reset member, each of the first sliding members being provided with at least one first elastic reset member, one end of the first elastic reset member being connected with the side frame.

[0016] In one of the embodiments, the unlocking assembly comprises a lock tongue and a lock plug, the lock tongue being movably arranged at the second end of the first rod member, the lock plug being arranged at the second end of the second rod member, one end of the linkage member being connected with the lock tongue away from the driving module; in the locked state, the lock plug is overlapped with the lock tongue, the linkage member can drive the lock tongue to move away from the lock plug, so as to switch the joint lock assembly from the locked state to the unlocked state; in the unlocked state, the lock tongue is separated from the lock plug.

[0017] In one of the embodiments, the joint lock assembly further comprises a housing, the housing is sleeved on the second end of the first rod and the second end of the second rod, and the second end of the first rod and the second end of the second rod are rotatably connected with the housing; the housing is provided with a insertion hole, the joint lock assembly further comprises a limiting piece, the limiting piece is movably arranged in the insertion hole, the lock tongue is provided with a limiting groove, in the locked state, the limiting piece is limitedly matched with the limiting groove to limit the movement of the lock tongue relative to the first rod, in the unlocked state, the limiting piece is separated from the limiting groove; or, the housing is provided with a limiting hole and an arc hole in communication with the limiting hole, the limiting hole is arranged corresponding to the position between the first rod and the second rod, and the arc hole is arranged corresponding to the second end of the first rod, the joint lock assembly further comprises a second sliding piece, the second sliding piece is arranged on the lock tongue, in the locked state, the second sliding piece is arranged in the limiting hole, the second sliding piece can move in the arc hole in a direction away from the limiting hole, so that the joint lock assembly is switched from the locked state to the unlocked state, in the unlocked state, the second sliding piece is located in the arc hole.

[0018] In one of the embodiments, the joint lock assembly further comprises a second elastic reset piece, the second elastic reset piece is connected with the lock tongue and the first rod, the second elastic reset piece is telescopic along the length direction of the first rod, and the second elastic reset piece is used to drive the lock tongue to move in a direction close to the lock plug; and / or, the joint lock assembly further comprises a folding elastic piece, one end of the folding elastic piece is connected with the housing, and the other end of the folding elastic piece is connected with the first rod and / or the second rod, when the joint lock assembly is unlocked, the folding elastic piece is used to drive the second end of the first rod and / or the second rod to rotate downward.

[0019] In one of the embodiments, the crib further comprises a support rod group and a folding joint, the support rod group comprises a third rod and a fourth rod, the first end of the third rod is rotatably connected with one of the side frames, the first end of the fourth rod is rotatably connected with the other side frame, and the second end of the third rod is rotatably connected with the second end of the fourth rod through the folding joint; in the unlocked state, the second end of the first rod and the second end of the second rod are rotated in a direction close to the support rod group, and the first end of the first rod and the first end of the second rod are folded in the middle; the second end of the third rod and the second end of the fourth rod are rotated in a direction close to the surrounding rod group, and the first end of the third rod and the first end of the fourth rod are folded in the middle, and the two side frames are folded in the middle.

[0020] In one of the embodiments, the rail assembly is detachably connected with both of the side frames, the support rod assembly is detachably connected with both of the side frames; and / or, one end of the support rod assembly is movably connected with one of the side frames, the other end of the support rod assembly is movably connected with the other side frame, the support rod assembly is movable along the height direction of the side frames, so that the support rod assembly is capable of being lifted and lowered; and / or, the crib further comprises a foldable mattress, the mattress is arranged on the support rod assembly.

[0021] In one of the embodiments, one end of the rail assembly is movably connected with one of the side frames, the other end of the rail assembly is movably connected with the other side frame, the rail assembly is movable along the height direction of the side frames, so that the rail assembly is capable of being lifted and lowered.

[0022] In one of the embodiments, both of the side frames are capable of being telescoped along the length direction thereof.

[0023] The crib described above, if the crib needs to be folded, the user triggers the unlocking key with hands, the unlocking key is triggered to output an unlocking instruction, and the unlocking instruction is sent to the control module, after the control module receives the unlocking instruction, the control joint lock assembly releases the locking of the first rod and the second rod. When the first rod and the second rod are released, the second end of the first rod and the second end of the second rod rotate under the action of their own gravity, and the first end of the first rod and the first end of the second rod are folded towards the middle. In this way, the unlocking is realized in an electronic manner, the unlocking operation is simplified, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application.

[0025] Figure 2 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application. Figure 1 It is a partial enlarged view of A shown in the figure.

[0026] Figure 3 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application. Figure 1 It is a structural exploded view of the unlocking assembly of the crib shown in the figure.

[0027] Figure 4 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application. Figure 1 It is a partial enlarged view of B shown in the figure.

[0028] Figure 5 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application. Figure 1 It is a sectional view of the crib shown in the figure.

[0029] Figure 6 It is a structural schematic view of the crib in an unfolded state according to an embodiment of the present application. Figure 5 It is a partial enlarged view of C shown in the figure.

[0030] Figure 7 Fig. 1 shows a perspective view of a crib in an extended position. Figure 1 Fig. 2 shows a perspective view of the crib of Fig. 1 in a collapsed position.

[0031] Figure 8 Fig. 3 shows a perspective view of the crib of Fig. 1 in a partially collapsed position. Figure 1 Fig. 4 shows a perspective view of the crib of Fig. 1 in a partially extended position.

[0032] Figure 9 Fig. 5 shows a perspective view of an unlocking assembly according to another embodiment of the present application.

[0033] Figure 10 Fig. 6 shows a cross-sectional view of the crib of Fig. 1 according to another embodiment of the present application.

[0034] Figure 11 Fig. 7 shows a perspective view of the crib of Fig. 1 in a partially collapsed position. Figure 10 Fig. 8 shows a partial enlarged view of D shown in Fig. 7.

[0035] Figure 12 Fig. 9 shows a perspective view of the crib of Fig. 1 in a partially extended position. Figure 11 Fig. 10 shows a perspective view of the crib of Fig. 1 in a partially collapsed position.

[0036] Figure 13 Fig. 11 shows a cross-sectional view of the unlocking assembly of Fig. 5 in an unlocked position. Figure 11 Fig. 12 shows a cross-sectional view of the unlocking assembly of Fig. 5 in a locked position.

[0037] BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 10, side frame; 11, first support leg; 12, second support leg; 13, first connecting piece; 14, second connecting piece; 15, moving wheel; 20, enclosure rod assembly; 21, first rod piece; 211, second connecting hole; 22, second rod piece; 221, fourth connecting hole; 30, folding joint; 40, support rod assembly; 41, third rod piece; 42, fourth rod piece; 50, joint lock assembly; 51, lock tongue; 511, limiting groove; 512, avoiding hole; 52, lock plug; 521, fifth connecting hole; 53, shell; 531, first avoiding opening; 532, second avoiding opening; 533, third avoiding opening; 534, fourth avoiding opening; 535, limiting hole; 536, circular arc hole; 537, insertion hole; 538, first connecting hole; 539, third connecting hole; 54, second sliding piece; 55, limiting piece; 56, second elastic reset piece; 70, unlocking assembly; 71, unlocking key; 72, control module; 73, driving mechanism; 731, driving module; 7311, driving piece; 7312, rack; 7313, unlocking connecting rod; 7314, unlocking crank; 7315, first sliding piece; 732, linkage piece; 733, first elastic reset piece; 74, child lock key; 80, mattress; 81, first cushion body; 82, second cushion body; 83, third cushion body; 90, synchronization mechanism; 91, fifth rod piece; 92, sixth rod piece; 93, synchronization wheel set; 931, first fixed gear; 932, first movable gear; 933, second fixed gear; 934, second movable gear. DETAILED DESCRIPTION

[0039] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application, and it is understood that similar improvements can be made by those skilled in the art without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0040] An embodiment of the present application provides a baby bed, which is foldable and foldable to a folding state as shown in Figure 7 In the folding state, the volume of the baby bed is small, which is beneficial to reduce the space occupied by the baby bed. The baby bed can also be unfolded to an unfolded state as shown in Figure 1 In the unfolded state, the baby can be placed in the baby bed.

[0041] Referring to Figure 1 An embodiment of the present application provides a baby bed, which comprises a side frame 10, an enclosure rod assembly 20, a joint lock assembly 50 and an unlocking assembly 70.

[0042] In one embodiment, referring to Figure 1The side frame 10 is provided with two, and the two side frames 10 are arranged along the first direction. S1 is used to represent the first direction.

[0043] Referring to Figure 1 The two side frames 10 each include a first support leg 11, a second support leg 12, a first connecting piece 13, and a second connecting piece 14. The first support leg 11 and the second support leg 12 are arranged along the second direction, and the first direction is perpendicular to the second direction. S2 is used to represent the second direction. The two ends of the first connecting piece 13 are respectively connected to the upper part of the first support leg 11 and the upper part of the second support leg 12. The two ends of the second connecting piece 14 are respectively connected to the lower part of the first support leg 11 and the lower part of the second support leg 12.

[0044] Optionally, referring to Figure 10 and Figure 12 The first support leg 11, the second support leg 12, the first connecting piece 13, and the second connecting piece 14 are connected to form an integrated rectangular frame. In this way, it is convenient for production and processing, and it is also convenient for assembling the baby crib, thereby improving the assembly efficiency of the baby crib.

[0045] Optionally, referring to Figure 1 The first support leg 11 is detachably connected to the first connecting piece 13 and the second connecting piece 14, and the second support leg 12 is detachably connected to the first connecting piece 13 and the second connecting piece 14. In this way, the side frame 10 can be disassembled, which is conducive to reducing the packaging volume of the baby crib and reducing transportation costs.

[0046] In one embodiment, referring to Figure 1 The rail assembly 20 is provided with two, and the two rail assemblies 20 are arranged between the two side frames 10 and along the second direction. One end of the rail assembly 20 is connected to one of the side frames 10, and the other end of the rail assembly 20 is connected to the other side frame 10.

[0047] Optionally, the two rail assemblies 20 are detachably connected to the side frames 10. In this way, the baby crib can be disassembled, which is conducive to reducing the packaging volume of the baby crib and reducing transportation costs.

[0048] Further, referring to Figure 1 The two rail assemblies 20 each include a first rod 21 and a second rod 22. The first end of the first rod 21 is rotatably connected to one of the side frames 10, the first end of the second rod 22 is rotatably connected to the other side frame 10, and the second end of the first rod 21 is rotatably connected to the second end of the second rod 22.

[0049] Optionally, the first rod 21 and the second rod 22 are hollow tubes. For example, the first rod 21 and the second rod 22 are both hollow circular tubes. In this way, the weight of the crib can be reduced, and the cost can also be reduced. Of course, in other embodiments, the first rod 21 and the second rod 22 can also be solid rods.

[0050] In one embodiment, referring to Figure 4 , the crib further comprises a support rod assembly 40. The support rod assembly 40 is arranged below the surrounding rod assembly 20 and is used to support the mattress 80.

[0051] Further, referring to Figure 1 , the support rod assembly 40 is provided with two, and the two support rod assemblies 40 are arranged between the two side frames 10 and are spaced apart along the second direction. One end of the support rod assembly 40 is connected with one of the side frames 10, and the other end of the support rod assembly 40 is connected with the other side frame 10.

[0052] Optionally, the two support rod assemblies 40 are detachably connected with the side frames 10. In this way, the crib can be disassembled, which is beneficial to reducing the packaging volume of the crib and reducing the transportation cost.

[0053] In one embodiment, referring to Figure 1 , the support rod assembly 40 comprises a third rod 41 and a fourth rod 42. The first end of the third rod 41 is rotatably connected with one of the side frames 10, the first end of the fourth rod 42 is rotatably connected with the other side frame 10, and the second end of the third rod 41 is rotatably connected with the second end of the fourth rod 42.

[0054] Optionally, the third rod 41 and the fourth rod 42 are hollow tubes. For example, the third rod 41 and the fourth rod 42 are both hollow circular tubes. In this way, the weight of the crib can be reduced, and the cost can also be reduced. Of course, in other embodiments, the third rod 41 and the fourth rod 42 can also be solid rods.

[0055] Further, the crib further comprises a folding joint 30. The folding joint 30 is provided with two, and the two folding joints 30 are arranged one-to-one with the two support rod assemblies 40. The folding joint 30 is arranged at the second end of the third rod 41 and the second end of the fourth rod 42, and the third rod 41 is rotatably connected with the fourth rod 42 through the folding joint 30. In this way, the folding and folding of the support rod assembly 40 can be realized.

[0056] In order to prevent the crib from being misfolded and injuring the infant during use, the crib further has a locking function of locking the unfolded state and an unlocking function of releasing the locked state.

[0057] In one embodiment, referring to Figure 1 and Figure 4The crib further comprises a joint lock assembly 50. Two joint lock assemblies 50 are provided, one for each of the two rail assemblies 20. The joint lock assembly 50 is arranged between the second end of the first rod 21 and the second end of the second rod 22, and the first rod 21 is rotatably connected to the second rod 22 via the joint lock assembly 50. The joint lock assembly 50 has a locked state and an unlocked state. When the crib is unfolded, the joint lock assembly 50 is in the locked state, and the first rod 21 and the second rod 22 are fixed relative to the side frame 10. In the unlocked state, the first rod 21 and the second rod 22 can rotate relative to the side frame 10, so that the crib can be folded.

[0058] When the crib is unfolded, referring to Figure 1 , the joint lock assembly 50 is in the locked state, and in each rail assembly 20, the first rod 21 and the second rod 22 are coaxially arranged, and both the first rod 21 and the second rod 22 are fixed relative to the side frame 10.

[0059] In an embodiment, referring to Figure 1 and Figure 2 , the crib further comprises an unlocking assembly 70 arranged on the side frame 10. The unlocking assembly 70 comprises an unlocking key 71 and a control module 72. The unlocking key 71 can output an unlocking instruction after being triggered, and the control module 72 is in communication connection with the unlocking key 71. The control module 72 is used to control the unlocking assembly 70 to switch from the locked state to the unlocked state after receiving the unlocking instruction.

[0060] Optionally, the unlocking key 71 can be a touch key, a press key, a rotary key, etc., without being limited thereto.

[0061] Optionally, the control module 72 is a control circuit board, without being limited thereto.

[0062] If the crib needs to be folded, referring to Figure 1 and Figure 2 , the user triggers the unlocking key 71 with his hand. The unlocking key 71 can output an unlocking instruction after being triggered, and sends the unlocking instruction to the control module 72. After receiving the unlocking instruction, the control module 72 controls the joint lock assembly 50 to release the locking of the first rod 21 and the second rod 22. After the first rod 21 and the second rod 22 are released, the second end of the first rod 21 and the second end of the second rod 22 rotate downward under the action of their own gravity, and the first end of the first rod 21 and the first end of the second rod 22 are folded towards the middle. In this way, the unlocking is realized in an electronic manner, the unlocking operation is simplified, and the user experience is improved.

[0063] In an embodiment, referring to Figure 1 and Figure 2The unlocking assembly 70 further comprises a child lock key 74. The child lock key 74 is used to lock the unlocking key 71 so that the unlocking key 71 cannot output the unlocking instruction signal. After the child lock key 74 is triggered, the unlocking key 71 can output the unlocking instruction. When unlocking, the child lock key 74 is triggered first, the child lock key 74 releases the locking of the unlocking key 71, and then the unlocking key 71 is triggered. In this way, the unlocking key 71 can output the unlocking instruction. In this way, by setting the child lock key 74, the crib can be prevented from being folded due to the unlocking key 71 being triggered by mistake, and the safety of the crib in use is ensured.

[0064] Optionally, the child lock key 74 can be a touch key, a press key, a rotary key, etc., without being limited thereto.

[0065] In an embodiment, referring to Figure 1 and Figure 3 , the unlocking assembly 70 further comprises a driving mechanism 73. The driving mechanism 73 comprises a driving module 731 and linkage members 732, and the driving module 731 is in communication connection with the control module 72. The linkage members 732 are provided in two, and both of the linkage members 732 are connected with the driving module 731. One end of one of the linkage members 732 away from the driving module 731 is connected with one of the joint lock assemblies 50, and one end of the other linkage member 732 away from the driving module 731 is connected with the other joint lock assembly 50.

[0066] When the control module 72 receives the unlocking instruction, the control module 72 controls the driving module 731 to act, the driving module 731 drives the linkage members 732 to act, and the linkage members 732 drive the joint lock assemblies 50 to act, so that the joint lock assemblies 50 are switched from the locked state to the unlocked state.

[0067] In an embodiment, referring to Figure 3 , the linkage members 732 are linkage ropes. Of course, in other embodiments, the linkage members 732 can also be other linkage structures, without being limited thereto.

[0068] Optionally, the linkage rope comprises a steel wire rope and a protective sleeve. The length of the steel wire rope is less than the length of the protective sleeve, the steel wire rope is movably arranged in the protective sleeve, and the steel wire rope can move along the length direction of the protective sleeve relative to the protective sleeve. One end of the steel wire rope is connected with the driving module 731, and the other end of the steel wire rope is connected with the joint lock assembly 50. In this way, the steel wire rope plays a linkage role, and the protective sleeve plays a positioning role.

[0069] In an embodiment, referring to Figure 3The driving module 731 comprises a driving member 7311, a rack 7312 and an unlocking crank 7314. The driving member 7311 is in communication connection with the control module 72, and the output end of the driving member 7311 is provided with a gear. The rack 7312 extends along the second direction, and the rack 7312 is in meshing transmission with the gear. The unlocking crank 7314 is rotatably connected to the side frame 10, and the unlocking crank 7314 has an abutting end for abutting cooperation with the rack 7312.

[0070] Further, referring to Figure 3 One of the linkages 732 is connected with the rack 7312, and the other linkage 732 is connected with the unlocking crank 7314.

[0071] When the control module 72 receives the unlocking instruction, the control module 72 controls the driving member 7311 to operate, the driving member 7311 drives the gear to rotate, the gear is in meshing transmission with the rack 7312, so that the rack 7312 moves towards the unlocking crank 7314, and one of the linkages 732 drives the joint lock assembly 50 connected therewith to switch from the locked state to the unlocked state through the movement of the rack 7312. When the rack 7312 abuts against the abutting end of the unlocking crank 7314, the unlocking crank 7314 rotates under the abutment of the rack 7312, and the other linkage 732 drives the joint lock assembly 50 connected therewith to switch from the locked state to the unlocked state through the rotation of the unlocking crank 7314. In this way, the unlocking of the joint lock assembly 50 can be realized through the cooperation of the driving member 7311, the rack 7312 and the unlocking crank 7314.

[0072] When the unlocking is completed, the driving member 7311 operates, the driving member 7311 drives the gear to rotate reversely, the gear is in meshing transmission with the rack 7312 to drive the rack 7312 to reset.

[0073] In one embodiment, referring to Figure 3 The driving module 731 further comprises an unlocking connecting rod 7313 and a first sliding member 7315. The unlocking connecting rod 7313 is rotatably connected with the unlocking crank 7314.

[0074] Further, referring to Figure 3 The first sliding member 7315 is provided with two, and the two first sliding members 7315 are both in sliding connection with the side frame 10. One of the first sliding members 7315 is connected with the rack 7312, and the other first sliding member 7315 is connected with the unlocking connecting rod 7313. The two linkages 732 are connected with the two first sliding members 7315 one by one, and it can be understood that one of the linkages 732 is indirectly connected with the rack 7312 through one of the first sliding members 7315, and the other linkage 732 is indirectly connected with the unlocking crank 7314 through the other first sliding member 7315.

[0075] In the embodiment, the rack 7312 and the unlocking link 7313 are arranged in the second direction and are spaced apart, and the unlocking crank 7314 is arranged at one end of the unlocking link 7313 close to the rack 7312. One of the first sliding members 7315 is arranged at one end of the rack 7312 away from the unlocking link 7313, and the other first sliding member 7315 is arranged at one end of the unlocking link 7313 away from the rack 7312. In this way, the length of the side frame 10 in the second direction can be fully utilized, and the thickness of the side frame 10 can be avoided from increasing.

[0076] In one embodiment, referring to Figure 3 , the rack 7312 is hinged to one of the first sliding members 7315, and the unlocking link 7313 is hinged to the other first sliding member 7315. Of course, in other embodiments, the rack 7312 can be fixedly connected to one of the first sliding members 7315, and the unlocking link 7313 can be fixedly connected to the other first sliding member 7315.

[0077] In one embodiment, referring to Figure 3 , the unlocking assembly 70 further comprises first elastic return members 733. Both of the first sliding members 7315 are provided with at least one first elastic return member 733, and one end of the first elastic return member 733 away from the first sliding member 7315 is connected to the side frame 10. During unlocking, all the first elastic return members 733 are gradually compressed. When the unlocking is completed, the first elastic return members 733 gradually expand to drive the first sliding members 7315 to return.

[0078] Of course, in other embodiments, the unlocking assembly 70 can also comprise a motor, a bidirectional screw rod, and two screw nuts. The motor is connected to the bidirectional screw rod, the two screw nuts are threadedly connected to the bidirectional screw rod, and the two screw nuts are respectively connected to the two linkage members 732 in a one-to-one correspondence. During unlocking, the motor drives the bidirectional screw rod to rotate around its own axis, and the bidirectional screw rod module drives the two screw nuts to move close to each other, so as to drive the joint lock assembly 50 to switch from the locked state to the unlocked state through the linkage member 732.

[0079] In one embodiment, referring to Figure 4 , Figure 5 and Figure 6 , the joint lock assembly 50 comprises a lock tongue 51 and a lock plug 52. The lock tongue 51 is movably arranged at the second end of the first rod member 21, and the lock plug 52 is arranged at the second end of the second rod member 22. One end of the linkage member 732 away from the driving module 731 is connected to the lock tongue 51.

[0080] Referring to Figure 5 and Figure 6In the locked state, the lock plug 52 is overlapped with the lock tongue 51. The linkage 732 can drive the lock tongue 51 to move away from the lock plug 52, so as to switch the joint lock assembly 50 from the locked state to the unlocked state. In the unlocked state, the lock tongue 51 is separated from the lock plug 52.

[0081] When the baby bed is unfolded and the joint lock assembly 50 is in the locked state, the first rod 21 and the second rod 22 are coaxially arranged, and the lock plug 52 is overlapped on the lock tongue 51.

[0082] If the baby bed needs to be folded, the driving module 731 drives the lock tongue 51 to move away from the lock plug 52 through the linkage 732, so that the lock tongue 51 is separated from the lock plug 52, and the joint lock assembly 50 is unlocked. After the joint lock assembly 50 is unlocked, the second end of the first rod 21 and the second end of the second rod 22 move downward under the action of their own gravity, so that the first end of the first rod 21 and the first end of the second rod 22 are folded to the middle.

[0083] In an embodiment, referring to Figure 4 , the joint lock assembly 50 further comprises a housing 53. The housing 53 is sleeved on the second end of the first rod 21 and the second end of the second rod 22. The second end of the first rod 21 and the second end of the second rod 22 are rotatably connected with the housing 53.

[0084] Specifically, referring to Figure 4 and Figure 6 , the housing 53 is provided with a first connecting hole 538, the second end of the first rod 21 is provided with a second connecting hole 211, and the lock tongue 51 is provided with an avoiding hole 512. The avoiding hole 512 is in strip shape and extends along the length direction of the first rod 21. The first connecting hole 538, the second connecting hole 211 and the avoiding hole 512 are in communication, and a first rotating connecting piece is arranged in the first connecting hole 538, the second connecting hole 211 and the avoiding hole 512. In this way, when the joint lock assembly 50 is switched between the locked state and the unlocked state, the lock tongue 51 moves along the length direction of the first rod 21, and because the avoiding hole 512 of the lock tongue 51 is in strip shape, the strip-shaped avoiding hole 512 can accommodate the first rotating connecting piece.

[0085] Specifically, referring to Figure 4 and Figure 6 , the housing 53 is further provided with a third connecting hole 539. The second end of the second rod 22 is provided with a fourth connecting hole 221, and the lock plug 52 is provided with a fifth connecting hole 521. The third connecting hole 539, the fourth connecting hole 221 and the fifth connecting hole 521 are in communication, and a second rotating connecting piece is arranged in the third connecting hole 539, the fourth connecting hole 221 and the fifth connecting hole 521.

[0086] In an embodiment, referring to Figure 4 andFigure 6 The housing 53 is provided with a socket 537. The joint lock assembly 50 further comprises a limiting member 55 movably arranged in the socket 537 or detachably arranged in the socket 537. The lock tongue 51 is provided with a limiting slot 511.

[0087] In the locked state, the limiting member 55 is in limiting cooperation with the limiting slot 511 to limit the movement of the lock tongue 51 relative to the first rod member 21. In the unlocked state, the limiting member 55 is separated from the limiting slot 511.

[0088] If the baby crib needs to be folded, the limiting member 55 is pulled outwardly to separate the limiting member 55 from the limiting slot 511 to release the limiting of the lock tongue 51, so that the second end of the first rod member 21 and the second end of the second rod member 22 are turned downwardly under the action of their own gravity, and the first end of the first rod member 21 and the first end of the second rod member 22 are folded towards the middle.

[0089] If the baby crib needs to be unfolded, the limiting member 55 is pushed inwardly to limit the movement of the lock tongue 51 relative to the first rod member 21 by limiting cooperation between the limiting member 55 and the limiting slot 511, and the lock plug 52 is lapped on the lock tongue 51, so that the surrounding rod assembly 20 is fixed relative to the side frame 10.

[0090] In another embodiment, referring to Figure 9 The housing 53 is provided with a limiting hole 535 and an arc hole 536 in communication with the limiting hole 535. The limiting hole 535 is arranged corresponding to the position between the first rod member 21 and the second rod member 22, and the arc hole 536 is arranged corresponding to the second end of the first rod member 21.

[0091] Further, referring to Figure 9 The joint lock assembly 50 further comprises a second sliding member 54 arranged on the lock tongue 51. In the locked state, the second sliding member 54 is arranged in the limiting hole 535. The second sliding member 54 can move in the arc hole 536 away from the limiting hole 535 to switch the joint lock assembly 50 from the locked state to the unlocked state. In the unlocked state, the second sliding member 54 is located in the arc hole 536.

[0092] If the baby crib needs to be folded, the drive module 731 drives the lock tongue 51 to move away from the lock plug 52, that is, under the driving of the linkage member 732, the second sliding member 54 is slid from the limiting hole 535 to the arc hole 536 and moves in the arc hole 536 away from the limiting hole 535. In this way, when the second sliding member 54 slides in the arc hole 536, on the one hand, the joint lock assembly 50 can be switched from the locked state to the unlocked state, and on the other hand, the second end of the first rod member 21 can be driven to turn downwardly.

[0093] If the baby crib is to be unfolded, the second sliding member 54 moves in the circular arc hole 536 towards the limiting hole 535 until the second sliding member 54 slides into the limiting hole 535, and the hole wall of the limiting hole 535 limits the second sliding member 54, so that the lock tongue 51 is fixed relative to the shell 53, and the lock plug 52 overlaps the lock tongue 51, so that the surrounding rod assembly 20 is fixed relative to the side frame 10.

[0094] In addition, the cooperation between the circular arc hole 536 and the second sliding member 54 makes the movement of the second sliding member 54 have a guiding effect, improves the stability of the movement of the second sliding member 54, and ensures the smoothness of the unfolding and folding of the baby crib.

[0095] Further, referring to Figure 9 , the circular arc hole 536 takes the first connecting hole 538 as the center. In this way, the first rod member 21 rotates around the first connecting hole 538, avoiding interference with the rotation of the first rod member 21 by the circular arc hole 536, and ensuring the smoothness of the rotation of the first rod member 21.

[0096] In one embodiment, referring to Figure 4 and Figure 9 , the shell 53 is provided with a first avoiding opening 531 on the side facing one of the side frames 10, a second avoiding opening 532 on the side facing the other side frame 10, a third avoiding opening 533 in communication with the first avoiding opening 531 on the side away from the support rod assembly 40, and a fourth avoiding opening 534 in communication with the second avoiding opening 532.

[0097] Referring to Figure 4 , when the baby crib is unfolded, the second end of the first rod member 21 is arranged in the shell 53 through the first avoiding opening 531, and the second end of the second rod member 22 is arranged in the shell 53 through the second avoiding opening 532. In this way, the first avoiding opening 531 and the second avoiding opening 532 can play a role of giving way, so that the second ends of the first rod member 21 and the second rod member 22 can be arranged in the shell 53.

[0098] Referring to Figure 13 , when the baby crib is folded, the second end of the first rod member 21 rotates downward, and in the process of rotation, the second end of the first rod member 21 rotates from the first avoiding opening 531 to the third avoiding opening 533. At the same time, the second end of the second rod member 22 rotates downward, and in the process of rotation, the second end of the second rod member 22 rotates from the second avoiding opening 532 to the fourth avoiding opening 534. When the baby crib is completely folded, the first rod member 21 is arranged in the third avoiding opening 533, and the second rod member 22 is arranged in the fourth avoiding opening 534, so that the third avoiding opening 533 and the fourth avoiding opening 534 can play a role of giving way, avoiding interference of the shell 53 with the folding of the surrounding rod assembly 20.

[0099] In one embodiment, referring toFigure 10 and Figure 11 The joint lock assembly 50 further comprises a second elastic return member 56. The second elastic return member 56 is connected with the lock tongue 51 and the first rod member 21, and is retractable along the length direction of the first rod member 21. The second elastic return member 56 is used to drive the lock tongue 51 to move towards the lock plug 52.

[0100] When unlocked, the driving module 731 drives the lock tongue 51 to move away from the lock plug 52 through the linkage 732, and the second elastic return member 56 is gradually compressed. When the external force applied to the operating member is removed, the second elastic return member 56 is gradually stretched, and under the restoring force of the second elastic return member 56, the lock tongue 51 moves towards the lock plug 52, so that the joint lock assembly 50 can be switched to the locked state.

[0101] Optionally, the second elastic return member 56 is a spring, an elastic column, etc., without being limited thereto.

[0102] In an embodiment, the joint lock assembly 50 further comprises a folding elastic member. One end of the folding elastic member is connected to the housing 53, and the other end of the folding elastic member is connected to the first rod member 21 and / or the second rod member 22. When the joint lock assembly 50 is unlocked, the folding elastic member is used to drive the second end of the first rod member 21 and / or the second rod member 22 to rotate downwards. In this way, by using the gravity of the first rod member 21 and the second rod member 22 and the elastic force of the folding elastic member, the surrounding rod assembly 20 can be quickly folded, and the folding efficiency is improved.

[0103] Optionally, one folding elastic member is provided. One end of the folding elastic member is connected to the housing 53, and the other end of the folding elastic member is connected to the first rod member 21; or one end of the folding elastic member is connected to the housing 53, and the other end of the folding elastic member is connected to the second rod member 22. In this way, the motion interference between the folding elastic member and the second sliding member 54 can be avoided.

[0104] Optionally, two folding elastic members are provided. The two ends of one folding elastic member are respectively connected to the first rod member 21 and the housing 53, and the two ends of the other folding elastic member are respectively connected to the second rod member 22 and the housing 53. In this way, the folding efficiency can be further improved.

[0105] In an embodiment, referring to Figure 10 , Figure 11 and Figure 13 The crib further comprises a synchronization mechanism 90. One end of the synchronization mechanism 90 is rotatably connected with one of the side frames 10, and the other end of the synchronization mechanism 90 is rotatably connected with the other side frame 10. In this way, taking Figure 10 as an example, the left structure and the right structure of the joint lock assembly 50 can keep synchronization and consistency when being unfolded and folded.

[0106] Further, referring to Figure 11 and Figure 13 , the synchronization mechanism 90 comprises a fifth link 91, a synchronization wheel set 93, and a sixth link 92. The first end of the fifth link 91 is rotatably connected to one of the side frames 10, and the first end of the sixth link 92 is rotatably connected to the other side frame 10. The synchronization wheel set 93 is rotatably arranged in the housing 53, and the second end of the fifth link 91 and the second end of the sixth link 92 are arranged on the synchronization wheel set 93. In this way, the synchronization wheel set 93 has a rotation freedom and rotates smoothly. During the unfolding and folding of the enclosure rod assembly 20 and the support rod assembly 40, the synchronization wheel set 93 plays a role of synchronously maintaining the enclosure rod assembly 20 and the support rod assembly 40, thereby avoiding asynchronous action and affecting the unfolding and folding effect.

[0107] Optionally, referring to Figure 11 and Figure 13 , the synchronization wheel set 93 comprises a first fixed gear 931, a first movable gear 932, a second fixed gear 933, and a second movable gear 934. The first fixed gear 931 is arranged on the second end of the fifth link 91, the second fixed gear 933 is arranged on the second end of the sixth link 92, and the first movable gear 932 and the second movable gear 934 are located between the first fixed gear 931 and the second fixed gear 933 and are rotatably connected to the housing 53. The first fixed gear 931 is engaged with the first movable gear 932, the first movable gear 932 is engaged with the second movable gear 934, and the second movable gear 934 is engaged with the second fixed gear 933.

[0108] Of course, in other embodiments, the synchronization wheel set 93 can also be a synchronous belt wheel, without being limited thereto.

[0109] In an embodiment, referring to Figure 1 , the baby crib further comprises a mattress 80. The mattress 80 is arranged on the support rod assembly 40. In use, the infant is placed on the mattress 80, and the mattress 80 plays a role of supporting the infant.

[0110] Optionally, the mattress 80 comprises a first pad body 81 and a second pad body 82. The first pad body 81 and the second pad body 82 are both hard pad bodies. The first pad body 81 is arranged between one of the side frames 10 and the folding joint 30, and the second pad body 82 is arranged between the other side frame 10 and the folding joint 30. The first pad body 81 and the second pad body 82 are foldably connected. Optionally, the first pad body 81 and the second pad body 82 are foldably connected by a soft fabric. In this way, when the baby crib is folded, the mattress 80 does not need to be disassembled, so that the mattress 80 can be folded together with the bed frame, thereby simplifying the unfolding and folding steps of the baby crib and improving the unfolding and folding efficiency of the baby crib.

[0111] Optionally, referring to Figure 1The mattress 80 comprises a first pad body 81, a second pad body 82 and a third pad body 83. The first pad body 81, the second pad body 82 and the third pad body 83 are all hard pad bodies. The first pad body 81 is arranged between one of the side frames 10 and the folding joint 30, the second pad body 82 is arranged between the other side frame 10 and the folding joint 30, and the third pad body 83 is arranged corresponding to the folding joint 30. The first pad body 81 is connected to the third pad body 83 through a soft fabric, and the second pad body 82 is connected to the third pad body 83 through a soft fabric. In this way, when the baby crib is folded, the mattress 80 does not need to be disassembled, so that the mattress 80 can be folded together with the bed frame, simplifying the unfolding and folding steps of the baby crib and improving the unfolding and folding efficiency of the baby crib.

[0112] In one embodiment, referring to Figure 1 and Figure 8 One end of the rail assembly 20 is movably connected to one of the side frames 10, and the other end of the rail assembly 20 is movably connected to the other side frame 10. The rail assembly 20 can move along the height direction of the side frame 10 to realize the lifting of the rail assembly 20. In use, the rail assembly 20 can be pulled down, which facilitates the placement of the baby in the baby crib and the carrying of the baby out of the baby crib. When the baby crib is placed beside an adult, the rail assembly 20 can be pulled down, which facilitates the care of the baby by the adult without getting up. In addition, under normal circumstances, the rail assembly 20 can be pulled up to ensure the safety of the baby.

[0113] It should be noted that when the rail assembly 20 is located at the upper part of the side frame 10, the linkage rope is in a relaxed state, i.e., the length of the linkage rope is slightly longer. When the rail assembly 20 is lowered, the linkage rope will be straightened but not tightened.

[0114] In one embodiment, referring to Figure 1 and Figure 8 One end of the support rod assembly 40 is movably connected to one of the side frames 10, and the other end of the support rod assembly 40 is movably connected to the other side frame 10. In use, the support rod assembly 40 can move along the height direction of the side frame 10 to realize the lifting of the support rod assembly 40.

[0115] It should be noted that the upward pulling and downward lowering of the support rod assembly 40 enable the baby crib to realize different functions. For example, when the baby crib is placed beside an adult bed, the support rod assembly 40 is pulled up, so that the adult and the baby are basically at the same height, which facilitates the care of the baby by the adult, and at this time the baby crib can realize the function of providing a resting place. For another example, the support rod assembly 40 is lowered, so that the baby plays in the baby crib without falling out, and at this time the baby crib can realize the function of providing a playing place, i.e., a game bed.

[0116] In one embodiment, referring to Figure 1 andFigure 7 Both side frames 10 are telescopic along their length. Specifically, the first support leg 11 and the second support leg 12 are telescopic along their length. When the crib is folded, the first support leg 11 and the second support leg 12 can be telescoped to reduce the height of the crib, so that the packing and transportation space can be reduced without disassembling the crib, which is beneficial to reduce the transportation cost.

[0117] In one embodiment, referring to Figure 10 The bottom of both side frames 10 is provided with a mobile wheel 15. In this way, the crib is convenient to transfer.

[0118] Further, the mobile wheel 15 is provided with a brake. In this way, the crib can be stably stopped at the use site. Alternatively, the brake can be manually controlled or controlled by stepping.

[0119] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0120] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0121] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0122] In this application, unless otherwise explicitly specified and limited, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0123] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation.

[0124] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0125] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A crib, characterized in that, The utility model relates to a baby crib, comprising: two side frames arranged opposite to each other; a rail assembly arranged between the two side frames, the rail assembly comprising a first rod and a second rod, the first end of the first rod being rotatably connected to one of the side frames, the first end of the second rod being rotatably connected to the other side frame; a joint lock assembly rotatably connecting the second end of the first rod and the second end of the second rod, the joint lock assembly having a locked state and an unlocked state, the joint lock assembly being in the locked state when the baby crib is unfolded, the first rod and the second rod being fixed relative to the side frames, the first rod and the second rod being rotatable relative to the side frames in the unlocked state; and an unlocking assembly comprising an unlocking key and a control module, the unlocking key being communicatively connected to the control module, the unlocking key being capable of outputting an unlocking instruction after being triggered, the control module being configured to control the joint lock assembly to switch from the locked state to the unlocked state after receiving the unlocking instruction.

2. The crib of claim 1, wherein, The unlocking assembly further comprises a child lock key for locking the unlocking key so that the unlocking key cannot output the unlocking instruction, the unlocking key being capable of outputting the unlocking instruction after the child lock key is triggered.

3. The crib of claim 1, wherein, The rail assembly is provided with two rail assemblies, each of which is arranged between the side frames. The joint lock assembly is provided with two joint lock assemblies, each of which corresponds to one of the rail assemblies.

4. The crib of claim 3, wherein, The unlocking assembly further comprises a driving mechanism, the driving mechanism comprising a driving module and a linkage, the driving module being communicatively connected to the control module. The linkage is provided with two linkages, each of which is connected to the driving module, one end of one of the linkages away from the driving module being connected to one of the joint lock assemblies, and one end of the other linkage away from the driving module being connected to the other joint lock assembly.

5. The crib of claim 4, wherein, The driving module comprises a driving member, a rack and an unlocking crank, the driving member being communicatively connected to the control module, the output end of the driving member being provided with a gear, the gear being in meshing transmission with the rack, the unlocking crank being rotatably connected to the side frame, the unlocking crank having an abutting end for abutting and cooperating with the rack. One of the linkages is connected to the rack, and the other linkage is connected to the unlocking crank.

6. The crib of claim 5, wherein, The driving module further comprises an unlocking connecting rod and a first sliding member, the unlocking connecting rod being rotatably connected to the unlocking crank. The first sliding member is provided with two first sliding members, one of which is connected to the rack, and the other is connected to the unlocking connecting rod, the two linkages being one-to-one connected to the two first sliding members.

7. The crib of claim 6, wherein, The unlocking assembly further comprises a first elastic reset member, each of the two first sliding members being provided with at least one first elastic reset member, one end of the first elastic reset member away from the first sliding member being connected to the side frame.

8. The crib of claim 4, wherein, The unlocking assembly comprises a lock tongue and a lock plug, the lock tongue is movably arranged at the second end of the first rod, the lock plug is arranged at the second end of the second rod, and one end of the linkage away from the driving module is connected with the lock tongue; In the locked state, the lock plug overlaps the lock tongue, the linkage can drive the lock tongue to move away from the lock plug, so that the joint lock assembly switches from the locked state to the unlocked state; In the unlocked state, the lock tongue is separated from the lock plug.

9. The crib of claim 8, wherein, The joint lock assembly further comprises a shell, the shell is sleeved on the second end of the first rod and the second end of the second rod, and the second end of the first rod and the second end of the second rod are rotatably connected with the shell; The shell is provided with a insertion hole, the joint lock assembly further comprises a limiting piece movably arranged in the insertion hole, the lock tongue is provided with a limiting groove, in the locked state, the limiting piece is limitedly matched with the limiting groove to limit the movement of the lock tongue relative to the first rod, in the unlocked state, the limiting piece is separated from the limiting groove; or, the shell is provided with a limiting hole and an arc hole in communication with the limiting hole, the limiting hole is arranged corresponding to the position between the first rod and the second rod, and the arc hole is arranged corresponding to the second end of the first rod, the joint lock assembly further comprises a second sliding piece arranged on the lock tongue, in the locked state, the second sliding piece is arranged in the limiting hole, the second sliding piece can move in the arc hole away from the limiting hole to switch the joint lock assembly from the locked state to the unlocked state, and in the unlocked state, the second sliding piece is located in the arc hole.

10. The crib of claim 9, wherein, The joint lock assembly further comprises a second elastic reset piece connected with the lock tongue and the first rod, the second elastic reset piece stretches and contracts along the length direction of the first rod, and the second elastic reset piece is used for driving the lock tongue to move towards the lock plug; And / or, the joint lock assembly further comprises a folding elastic piece, one end of the folding elastic piece is connected with the shell, and the other end of the folding elastic piece is connected with the first rod and / or the second rod, when the joint lock assembly is unlocked, the folding elastic piece is used for driving the second end of the first rod and / or the second rod to rotate downward.

11. The crib of any of claims 1 to 10, wherein, The crib further comprises a support rod group and a folding joint, the support rod group comprises a third rod and a fourth rod, a first end of the third rod is rotatably connected with one of the side frames, a first end of the fourth rod is rotatably connected with the other side frame, and a second end of the third rod is rotatably connected with a second end of the fourth rod through the folding joint; In the unlocked state, the second ends of the first and second rods are turned towards the support rod set, the first ends of the first and second rods are drawn towards the middle, the second ends of the third and fourth rods are turned towards the surrounding rod set, the first ends of the third and fourth rods are drawn towards the middle, and the two side frames are drawn towards the middle.

12. The crib of claim 11, wherein, The surrounding rod set is detachably connected to the two side frames, and the support rod set is detachably connected to the two side frames. The one end of the support rod set is movably connected to one of the side frames, the other end of the support rod set is movably connected to the other side frame, and the support rod set is movable along the height direction of the side frames so as to be raised and lowered. The baby crib further comprises a foldable mattress, which is arranged on the support rod set.

13. The crib of any of claims 1 to 10, wherein, The one end of the surrounding rod set is movably connected to one of the side frames, the other end of the surrounding rod set is movably connected to the other side frame, and the surrounding rod set is movable along the height direction of the side frames so as to be raised and lowered.

14. The crib of any of claims 1 to 10, wherein, The two side frames are telescopic along the length direction thereof.

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