Foldable baby bed

Abstract

The application relates to a foldable baby crib which comprises side frames, a surrounding rod assembly, a supporting assembly, a first lock assembly, a second lock assembly and a linkage unlocking mechanism. The surrounding rod assembly comprises a first rod and a second rod which are rotationally connected. The supporting assembly comprises a third rod, a fourth rod and a folding joint. The first end of the third rod is rotationally connected to the first side frame, the first end of the fourth rod is rotationally connected to the second side frame, the second end of the third rod and the second end of the fourth rod are rotationally connected through the folding joint. The linkage unlocking mechanism comprises an operating member, a first traction member and a second traction member. When the foldable baby crib is in an unfolded state, the operating member is moved to an unlocking position relative to the first side frame, so that the first traction member and the second traction member respectively link the first lock assembly and the second lock assembly to release the locking. The foldable baby crib is simple and reliable in operation, and the folding operation is simplified, and complicated unlocking operation is not needed.

Description

TECHNICAL FIELD

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

[0002] Traditional baby beds can meet the needs of infants and children for sleep or play. With the increasing demand of users for the functions and convenient use of baby beds, foldable baby beds have appeared.

[0003] Foldable baby beds can be switched between an unfolded state and a folded state, which not only meets the use needs, but also facilitates storage and transportation by folding, so that foldable baby beds are more popular among families.

[0004] However, the folding operation of the foldable baby bed in the related art is cumbersome. SUMMARY

[0005] Therefore, it is necessary to provide a foldable baby bed to solve the problem of cumbersome folding operation.

[0006] The present application provides a foldable baby bed, comprising:

[0007] Side frames, comprising a first side frame and a second side frame, the first side frame and the second side frame are arranged opposite and spaced apart;

[0008] A surrounding rod assembly is arranged between the first side frame and the second side frame, 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 the first side frame, and the first end of the second rod member is rotatably connected to the second side frame;

[0009] A support assembly is arranged between the first side frame and the second side frame, the support assembly comprises a third rod member, a fourth rod member and a folding joint, the first end of the third rod member is rotatably connected to the first side frame, the first end of the fourth rod member is rotatably connected to the second side frame, and the second end of the third rod member and the second end of the fourth rod member are rotatably connected through the folding joint;

[0010] A first lock assembly, when the foldable baby bed is in an unfolded state, the first lock assembly limits the relative rotation of the first rod member and the second rod member;

[0011] A second lock assembly, when the foldable baby bed is in an unfolded state, the second lock assembly limits the relative rotation of the third rod member and the fourth rod member;

[0012] The linkage unlocking mechanism comprises an operating member, a first traction member and a second traction member, the operating member is movably connected to the first side frame and can be moved to an unlocking position relative to the first side frame, the operating member is connected to the first lock assembly through the first traction member, and the operating member is connected to the second lock assembly through the second traction member; when the foldable baby crib is in the unfolded state, the operating member is operated to move to the unlocking position relative to the first side frame, so that the first traction member and the second traction member respectively link the first lock assembly and the second lock assembly to be unlocked.

[0013] In one of the embodiments, the operating member is reversibly installed on the first side frame; the linkage unlocking mechanism further comprises a first elastic reset member connected to the operating member and the first side frame, and the first elastic reset member is used to reset the operating member.

[0014] In one of the embodiments, when the first lock assembly and the second lock assembly are unlocked, the second ends of the first rod member and the second rod member are rotated towards the support assembly, the first ends of the first rod member and the second rod member are converged towards the middle; the second ends of the third rod member and the fourth rod member are rotated towards the surrounding rod assembly, the first ends of the third rod member and the fourth rod member are converged towards the middle; and the first side frame and the second side frame are moved towards each other.

[0015] In one of the embodiments, the first lock assembly and the second lock assembly are of the same structure.

[0016] In one of the embodiments, the first lock assembly comprises a lock tongue, a lock plug and a housing, the lock tongue is movably arranged at the second end of the first rod member, the lock plug is arranged at the second end of the second rod member, one end of the first traction member away from the operating member is connected to the lock tongue, and the second end of the first rod member and the second end of the second rod member are rotatably connected to the housing.

[0017] When the first lock assembly is in the locked state, the lock plug is overlapped with the lock tongue and limits the rotation of the first rod member and the second rod member relative to the housing, when the lock tongue is moved away from the lock plug by the first traction member, the lock tongue is separated from the lock plug, so that the first rod member and the second rod member can rotate relative to the housing.

[0018] In one of the embodiments, the first lock assembly further comprises a first folding elastic member, one end of the first folding elastic member is connected to the housing, and the other end of the first folding elastic member is connected to the first rod member and / or the second rod member; when the first lock assembly is unlocked, the first folding elastic member is used to drive the second end of the first rod member and / or the second end of the second rod member to rotate towards the support assembly.

[0019] In one of the embodiments, the first lock assembly further comprises a second elastic reset member, the second elastic reset member is connected to the locking tongue and the first rod member, the second elastic reset member is telescopic along the length direction of the first rod member, and the second elastic reset member is used to drive the locking tongue to move towards the lock plug.

[0020] In one of the embodiments, the support assembly comprises a reinforcing member, an end of the reinforcing member is connected with a mounting base, and the third rod member is rotationally connected to the mounting base; the second lock assembly comprises a locking member, a reset elastic member and a transmission assembly, the locking member is movably connected to the mounting base, when the foldable baby crib is in the unfolded state, the locking member can extend into the third rod member under the elastic force of the reset elastic member, so as to limit the rotation of the third rod member relative to the mounting base, and the transmission assembly is used to move the locking member away from the third rod member under the driving of the second traction member, so that the locking member overcomes the elastic force of the reset elastic member and moves out of the third rod member.

[0021] In one of the embodiments, the reinforcing member is a hollow pipe body, and a first guide groove is arranged on the pipe wall close to the end, the length direction of the first guide groove is the same as the movement direction of the locking member; the transmission assembly comprises a first transmission member and a second transmission member, the first transmission member is provided with a guide hole and a second guide groove penetrating the side wall of the guide hole, one end of the locking member away from the third rod member is slidably fitted in the guide hole, and a guide pin is connected to the locking member, the guide pin is arranged in the first guide groove and the second guide groove, the length direction of the second guide groove intersects with the length direction of the first guide groove, and the first transmission member is telescopically arranged in the reinforcing member, so that the groove wall of the second guide groove pushes the guide pin to move along the first guide groove, and the guide pin moves along the first guide groove to drive the locking member to move out of the third rod member.

[0022] In one of the embodiments, the second transmission member is connected with the second traction member and can be moved upward relative to the mounting base in a vertical direction under the drive of the second traction member. A slope is arranged on the side of the second transmission member facing the first transmission member. Part of the structure of the first transmission member extends out of the reinforcing member and abuts against the slope. When the second traction member drives the second transmission member to move relative to the mounting base, the slope pushes the first transmission member into the reinforcing member, so that the first transmission member drives the guide pin to move along the first guide slot in a direction away from the third lever.

[0023] In one of the embodiments, the foldable baby crib further comprises a foldable mattress arranged in the support assembly.

[0024] In one of the embodiments, one end of the rail assembly is movably connected with the first side frame, and the other end of the rail assembly is movably connected with the second side frame. The rail assembly can be moved along the height direction of the side frames so as to be raised or lowered.

[0025] In one of the embodiments, one end of the support assembly is movably connected with the first side frame, and the other end of the support assembly is movably connected with the second side frame. The support assembly can be moved along the height direction of the side frames so as to be raised or lowered.

[0026] In one of the embodiments, the first side frame and the second side frame can be telescoped along their length directions.

[0027] In one of the embodiments, the rail assembly is detachably connected with the first side frame and the second side frame, and the support assembly is detachably connected with the first side frame and the second side frame.

[0028] The foldable baby crib described above, when unfolded, can lock the first lever and the second lever by the first lock assembly, so that the rail assembly is stably kept in the unfolded state. Meanwhile, the second lock assembly locks the third lever and the fourth lever, so that the support assembly is stably kept in the unfolded state. Then, the support assembly and the rail assembly together keep the stability of the foldable baby crib in the unfolded state, reducing the risk of accidental folding and causing injury to the user. When the foldable baby crib needs to be folded, only the first lock assembly is unlocked by the first traction member through the operation member, and the second lock assembly is unlocked by the second traction member. Thus, the rail assembly and the support assembly restore the folding performance to adapt to the need of switching the foldable baby crib from the unfolded state to the folded state. Therefore, this unlocking operation is simple and reliable, simplifying the folding operation without complicated unlocking operation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Structure diagram of a foldable crib in a folded state according to an embodiment of the present application.

[0030] Figure 2 Structure diagram of a foldable crib in an unfolded state according to an embodiment of the present application.

[0031] Figure 3 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application.

[0032] Figure 4 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 3 Enlarged view of part A.

[0033] Figure 5 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 4 Structure diagram of a first lock assembly of a foldable crib.

[0034] Figure 6 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 3 Enlarged view of part B.

[0035] Figure 7 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application.

[0036] Figure 8 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 7 Enlarged view of part C.

[0037] Figure 9 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 8 Structure diagram of a second lock assembly of a foldable crib.

[0038] Figure 10 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application.

[0039] Figure 11 Structure diagram of a foldable crib in an unfolded state according to another embodiment of the present application.

[0040] Figure 12 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 11 Enlarged view of part D.

[0041] Figure 13 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 11 Front view structure diagram of a foldable crib.

[0042] Figure 14 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 13 Enlarged view of part E.

[0043] Figure 15 Structure diagram of a foldable crib in a partially removed structure according to an embodiment of the present application. Figure 14Structure diagram of the lock tongue and the lock plug of the first lock assembly of the foldable crib when they are separated.

[0044] Figure 16 For Figure 15 Structure diagram of the first lock assembly of the foldable crib in the unlocked state when the first rod and the second rod rotate relative to each other.

[0045] Figure 17 For Figure 11 Structure diagram of the foldable crib gradually folding.

[0046] Figure 18 For Figure 17 Structure diagram of the foldable crib after being completely folded.

[0047] Figure 19 For the foldable crib in the folded state, the cross-sectional view of the plane where the axes of the first rod and the second rod are located.

[0048] Explanation of reference numerals:

[0049] 10, side frame; 10a, first side frame; 10b, second side frame; 11, first support; 12, second support; 13, guardrail; 14, reinforcing member; 14a, first guide slot; 15, mounting seat; 20, linkage unlocking mechanism; 21, operating member; 22, first traction member; 23, second traction member; 24, first elastic return member; 25, sliding block; 30, surrounding rod assembly; 31, first rod; 311, second connecting hole; 32, second rod; 321, fourth connecting hole; 40, support assembly; 41, third rod; 42, fourth rod; 43, folding joint; 50, first lock assembly; 51, lock tongue; 511, limiting slot; 512, avoidance hole; 52, lock plug; 521, fifth connecting hole; 53, housing; 531, first avoidance opening; 532, second avoidance opening; 533, third avoidance opening; 534, fourth avoidance opening; 535, limiting hole; 536, circular arc hole; 537, insertion hole; 538, first connecting hole; 539, third connecting hole; 54, limiting member; 55, sliding member; 56, second elastic return member; 57, first folding elastic member; 60, second lock assembly; 61, locking member; 61a, guide pin; 62, return elastic member; 63, transmission assembly; 631, first transmission member; 631a, guide hole; 631b, second guide slot; 632, second transmission member; 632a, inclined surface; 70, second folding elastic member; 80, mattress; 81, first cushion body; 82, second cushion body; 83, third cushion body; 90, synchronization mechanism; 91, fifth rod; 92, sixth rod; 93, synchronization wheel set; 931, first fixed gear; 932, first movable gear; 933, second fixed gear; 934, second movable gear; 100, moving wheel. DETAILED DESCRIPTION

[0050] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and one of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0051] An embodiment of the present application provides a foldable baby crib which can be switched between an unfolded state and a folded state. In the folded state, the foldable baby crib has a small volume, which is conducive to reducing the occupied space and facilitating carrying and storage. In the unfolded state, the foldable baby crib can provide a play or sleep space for infants.

[0052] In combination Figure 1 and Figure 2 The foldable baby crib comprises side frames 10, a linkage unlocking mechanism 20, a surrounding rod assembly 30 and a support assembly 40.

[0053] The side frames 10 are provided in two, and for the purpose of description, the two side frames 10 are respectively referred to as “first side frame 10a” and “second side frame 10b”. The first side frame 10a and the second side frame 10b are arranged in a first direction. The first direction is represented by S1.

[0054] The first side frame 10a and the second side frame 10b each comprise a first support 11, a second support 12, a guardrail 13 and a reinforcing piece 14.

[0055] The first support 11 and the second support 12 are arranged in a second direction, and the first direction is perpendicular to the second direction. The second direction is represented by S2. The two ends of the guardrail 13 are respectively connected to the upper part of the first support 11 and the upper part of the second support 12.

[0056] The two ends of the reinforcing piece 14 are respectively connected to the lower part of the first support 11 and the lower part of the second support 12.

[0057] Optionally, the first support 11, the second support 12, the guardrail 13 and the reinforcing 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 foldable baby crib, thereby improving the assembly efficiency of the foldable baby crib.

[0058] In another embodiment, the first support 11 is detachably connected with the guard 13 and the reinforcing member 14, and the second support 12 is detachably connected with the guard 13 and the reinforcing member 14. In this way, the first side frame 10a and the second side frame 10b can be detached, which is beneficial to reduce the packaging volume of the foldable crib and reduce the transportation cost.

[0059] The connection mode of each structure in the first side frame 10a and the second side frame 10b and the structure of the surrounding rod assembly 30 are not limited herein. As long as the first side frame 10a and the second side frame 10b can be close to each other during the folding of the foldable crib to meet the folding needs of the foldable crib.

[0060] Continuing to combine Figure 1 and Figure 2 The surrounding rod assembly 30 is provided with two, and the two surrounding rod assemblies 30 are arranged between the first side frame 10a and the second side frame 10b and are spaced apart along the second direction. It can be understood that the two ends of the two surrounding rod assemblies 30 in the second direction are connected between the first side frame 10a and the second side frame 10b.

[0061] Optionally, the surrounding rod assembly 30 is detachably connected with the first side frame 10a and the second side frame 10b. In this way, the foldable crib can be detached, which is beneficial to reduce the packaging volume of the foldable crib and reduce the transportation cost.

[0062] Continuing to combine Figure 1 The two surrounding rod assemblies 30 each include a first rod member 31 and a second rod member 32. The first end of the first rod member 31 is rotatably connected with the first side frame 10a, the first end of the second rod member 32 is rotatably connected with the second side frame 10b, and the second end of the first rod member 31 is rotatably connected with the second end of the second rod member 32.

[0063] Optionally, the first rod member 31 and the second rod member 32 are hollow tubes. For example, the first rod member 31 and the second rod member 32 are each a hollow circular tube. In this way, the weight of the foldable crib can be reduced, and the cost can also be reduced. Of course, in another embodiment, the first rod member 31 and the second rod member 32 can also be solid rods.

[0064] The support assembly 40 is provided with two, and the two support assemblies 40 are arranged between the first side frame 10a and the second side frame 10b and are spaced apart along the second direction. One end of the support assembly 40 is connected with the first side frame 10a, and the other end of the support assembly 40 is connected with the second side frame 10b.

[0065] Optionally, the support assembly 40 is detachably connected with the first side frame 10a and the second side frame 10b. In this way, the foldable crib can be detached, which is beneficial to reduce the packaging volume of the foldable crib and reduce the transportation cost.

[0066] CombiningFigure 3 The support assembly 40 comprises a third rod 41, a fourth rod 42 and a folding joint 43. The first end of the third rod 41 is rotatably connected with the first side frame 10a. The first end of the fourth rod 42 is rotatably connected with the second side frame 10b. The second end of the third rod 41 is rotatably connected with the second end of the fourth rod 42 through the folding joint 43.

[0067] 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 foldable baby bed can be reduced, and the cost can also be reduced. Of course, in another embodiment, the third rod 41 and the fourth rod 42 can also be solid rods.

[0068] It should be noted that for the foldable baby bed which has a cuboid frame in the unfolded state, the part where the side frame 10 and the support assembly 40 are connected can share a structural member. For example, the reinforcing member 14 in the side frame 10 can also be part of the support assembly 40.

[0069] In some embodiments, the reinforcing member 14 can also be removed from the side frame 10 and used as part of the support assembly 40. When the support assembly 40 is installed between the first side frame 10a and the second side frame 10b, the reinforcing member 14 is located between the first support 11 and the second support 12.

[0070] In this embodiment, the two ends of the support assembly 40 can each be provided with a reinforcing member 14, and the first side frame 10a and the second side frame 10b can be installed through the corresponding reinforcing member 14 on the corresponding side.

[0071] Further, the installation height of the reinforcing member 14 at the two ends of the support assembly 40 on the first side frame 10a and the second side frame 10b can be adjusted, so that the installation height of the support assembly 40 can be adjusted.

[0072] It should be noted that the upward pulling and downward placing of the support assembly 40 enable the foldable baby bed to achieve different functions. For example, when the foldable baby bed is placed beside an adult bed, the support assembly 40 is pulled up so that the adult and the baby are at substantially the same height, which facilitates the adult to take care of the baby, and at this time the foldable baby bed can achieve the function of providing a resting place. For another example, the support assembly 40 is placed down, so that the baby playing in the foldable baby bed will not fall out, and at this time the foldable baby bed can achieve the function of providing a playing place, i.e. a playpen.

[0073] In order to prevent the foldable baby bed from being mistakenly folded during use, the foldable baby bed of the present application also has a locking function for locking the unfolded state and an unlocking function for unlocking.

[0074] For the convenience of understanding, the unfolded and locked state of the foldable baby crib is referred to as "locked state", and the state of the foldable baby crib after being unlocked for folding is referred to as "unlocked state".

[0075] Specifically, when the foldable baby crib is in the locked state, the surrounding rod assembly 30 cannot be folded due to being locked, that is, the rotation freedom between the first rod member 31 and the second rod member 32 is locked, so that the first rod member 31 and the second rod member 32 will not be folded by relative rotation. Correspondingly, when the foldable baby crib is in the locked state, the support assembly 40 cannot be folded due to being locked, that is, the rotation freedom between the third rod member 41 and the fourth rod member 42 is locked, so that the third rod member 41 and the fourth rod member 42 will not be folded by relative rotation.

[0076] In the embodiments of the present application, the linkage unlocking mechanism 20 not only can release the locking of the surrounding rod assembly 30, but also can release the locking of the support assembly 40, thereby achieving the effect of improving the unlocking operation efficiency.

[0077] For the convenience of understanding, the structure and principle of the linkage unlocking mechanism 20 will be described below in combination with the structure for realizing the locking on the surrounding rod assembly 30 and the support assembly 40. However, it is not meant that the structure for realizing the locking of the rotation freedom between the first rod member 31 and the second rod member 32, and the structure for realizing the locking of the rotation freedom between the third rod member 41 and the fourth rod member 42 are limited to this.

[0078] In combination with Figure 2 and Figure 3 , the foldable baby crib further comprises a first lock assembly 50 and a second lock assembly 60. When the foldable baby crib is in the unfolded state, the first lock assembly 50 limits the relative rotation of the first rod member 31 and the second rod member 32, and the second lock assembly 60 limits the relative rotation of the third rod member 41 and the fourth rod member 42.

[0079] It should be noted here that since the locking and unlocking of the foldable baby crib are both for the locking or releasing of the corresponding lock assembly when the foldable baby crib is in the unfolded state, the locking of the foldable baby crib can be understood as the first lock assembly 50 and the second lock assembly 60 being in the locked state; correspondingly, the unlocking of the foldable baby crib can be understood as the first lock assembly 50 and the second lock assembly 60 being in the unlocked state.

[0080] In combination with Figure 3 , the linkage unlocking mechanism 20 comprises an operating member 21, a first traction member 22 and a second traction member 23.

[0081] The operating member 21 is movably connected to the side frame 10 and can move to an unlocking position relative to the side frame 10. The operating member 21 is connected to the first lock assembly 50 through the first traction member 22, and the operating member 21 is connected to the second lock assembly 60 through the second traction member 23.

[0082] When the foldable crib is in the unfolded state, the first pulling member 22 and the second pulling member 23 are connected to the first lock assembly 50 and the second lock assembly 60 respectively by moving the operating member 21 to the unlocking position relative to the side frame 10, so that the first lock assembly 50 no longer restricts the relative rotation of the first rod member 31 and the second rod member 32, and the second lock assembly 60 no longer restricts the relative rotation of the third rod member 41 and the fourth rod member 42.

[0083] In this embodiment, the unlocking operation is simple, and only needs to place the operating member 21 relative to the side frame 10 in the unlocking position to achieve unlocking of the first lock assembly 50 and the second lock assembly 60, and then the surrounding rod assembly 30 and the support assembly 40 can be folded.

[0084] In the embodiments of the present application, the first pulling member 22 and the second pulling member 23 can be a linkage rope. Of course, in another embodiment, the first pulling member 22 and the second pulling member 23 can also be other flexible pulling structures, which are not limited here.

[0085] Optionally, the linkage rope includes a steel wire rope and a protective sleeve. The length of the steel wire rope is less than the length of the protective sleeve, and the steel wire rope is movably arranged in the protective sleeve and can move along the length direction of the protective sleeve relative to the protective sleeve.

[0086] Taking the first pulling member 22 including a steel wire rope as an example, one end of the steel wire rope is connected with the operating member 21, and the other end of the steel wire rope is connected with the first lock assembly 50. In this way, the steel wire rope plays a linkage role, and the protective sleeve plays a positioning role.

[0087] In this embodiment, two first pulling members 22 are provided, and both of the two first pulling members 22 are connected with the operating member 21. One end of one of the two first pulling members 22 away from the operating member 21 is connected with one of the first lock assemblies 50, and one end of the other first pulling member 22 away from the operating member 21 is connected with the other first lock assembly 50. In this way, the operating member 21 is flipped outward, and the operating member 21 can drive the two first lock assemblies 50 to move synchronously, thereby achieving synchronous unlocking of the two first lock assemblies 50.

[0088] In combination with Figure 4 and Figure 5 , the first lock assembly 50 is arranged at the second end of the first rod member 31 and the second end of the second rod member 32, and the first rod member 31 is rotatably connected with the second rod member 32 through the first lock assembly 50.

[0089] Understandably, the first lock assembly 50 and the second lock assembly 60 both have a locking state and an unlocking state.

[0090] In combination with Figure 1When the first lock assembly 50 and the second lock assembly 60 are both in the unlocked state, the first lever 31 and the second lever 32 can rotate relative to the side frame 10, and the third lever 41 and the fourth lever 42 can rotate relative to the side frame 10, so that the foldable baby crib can be folded and collapsed.

[0091] In combination Figure 2 When the first lock assembly 50 is in the locked state, the first lever 31 and the second lever 32 are coaxially arranged, and the third lever 41 and the fourth lever 42 are fixed relative to the side frame 10. When the second lock assembly 60 is in the locked state, the third lever 41 and the fourth lever 42 are coaxially arranged, and the third lever 41 and the fourth lever 42 are fixed relative to the side frame 10.

[0092] In combination Figure 2 and Figure 3 The first lock assembly 50 is provided with two. One of the first lock assemblies 50 is arranged at the second end of one of the first levers 31 and the second end of the corresponding second lever 32, and the other first lock assembly 50 is arranged at the second end of the other first lever 31 and the second end of the corresponding second lever 32.

[0093] The operating member 21 can be an unlocking wrench, so that the unlocking operation can be performed in a rotating manner. For example, the operating member 21 can be reversibly mounted on the side frame 10. Alternatively, the operating member 21 can be reversibly arranged on the guardrail 13.

[0094] Alternatively, the operating member 21 can be reversibly arranged on the first side frame 10a away from the second side frame 10b. When unlocking, the operating member 21 is flipped in a direction away from the second side frame 10b, which is convenient for operation.

[0095] The rotating operation of the operating member 21 relative to the side frame 10 is used to switch the first lock assembly 50 from the locked state to the unlocked state by the first traction member 22. Correspondingly, the rotating operation of the operating member 21 relative to the side frame 10 can also switch the first lock assembly 50 from the locked state to the unlocked state by the second traction member 23.

[0096] In some embodiments, the operating member 21 can be rotated outward relative to the side frame 10 to an unlocking position. In this embodiment, if the foldable baby crib needs to be collapsed, the operating member 21 is flipped outward, and the operating member 21 can drive the first lock assembly 50 and the second lock assembly 60 to perform unlocking actions by the first traction member 22 and the second traction member 23 respectively, and then the first lock assembly 50 and the second lock assembly 60 are switched from the locked state to the unlocked state.

[0097] In combination Figure 4 and Figure 5The first lock assembly 50 comprises a lock tongue 51, a lock plug 52 and a housing 53. The lock tongue 51 is movably arranged at the second end of the first rod member 31, and the lock plug 52 is arranged at the second end of the second rod member 32. One end of the first traction member 22 is connected with the operating member 21, and the other end of the first traction member 22 is connected with the lock tongue 51, so that the operating member 21 can pull the lock tongue 51 through the first traction member 22 to perform the unlocking operation when the operating member 21 moves. In this embodiment, the second end of the first rod member 31 and the second end of the second rod member 32 are rotatably connected with the housing 53.

[0098] Continuing to combine Figure 4 and Figure 5 In the locked state, the lock plug 52 overlaps the lock tongue 51, and the first rod member 31 and the second rod member 32 are limited to rotate relative to the housing 53, so that the surrounding rod assembly 30 remains in the unfolded state and cannot be folded. When the first traction member 22 drives the lock tongue 51 to move away from the lock plug 52, the lock tongue 51 is separated from the lock plug 52, so that the first lock assembly 50 is switched from the locked state to the unlocked state, and then the first rod member 31 and the second rod member 32 can rotate relative to the housing 53.

[0099] Further, the housing 53 is provided with a insertion hole 537. The first lock assembly 50 further comprises a limiting member 54, which is inserted into the insertion hole 537, so that the limiting member 54 is connected with the housing 53. The lock tongue 51 is provided with a limiting groove 511.

[0100] In the locked state, the limiting member 54 is limitedly matched with the limiting groove 511, and the lock tongue 51 is not easily retracted into the first rod member 31 due to the possible small amplitude rotation of the first rod member 31 and the second rod member 32, thereby improving the stability in the locked state. The cooperation between the limiting groove 511 of the lock tongue 51 and the limiting member 54 makes the lock tongue 51 unable to rotate relative to the housing 53, thereby achieving the purpose of locking the rotation freedom of the first rod member 31. When the first lock assembly 50 is unlocked, the operating member 21 pulls the lock tongue 51 through the first traction member 22, so that the lock tongue 51 is retracted into the first rod member 31. At this time, the lock tongue 51 is away from the limiting member 54. When the limiting member 54 is retracted to a certain distance in the first rod member 31, the limiting member 54 is separated from the limiting groove 511, that is, the limiting member 54 is disengaged from the limiting groove 511, and the limiting member 54 no longer limits the rotation of the lock tongue 51, so that the first rod member 31 can rotate relative to the housing 53.

[0101] Combining Figure 4 and Figure 5The shell 53 is provided with a first avoiding opening 531 on the side facing the first side frame 10a, a second avoiding opening 532 on the side facing the second side frame 10b, a third avoiding opening 533 on the side away from the support assembly 40 and communicating with the first avoiding opening 531, and a fourth avoiding opening 534 on the side away from the support assembly 40 and communicating with the second avoiding opening 532.

[0102] In the folding process of the foldable baby crib, the second end of the first rod member 31 can be arranged in the shell 53 through the first avoiding opening 531, and the second end of the second rod member 32 can be 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 avoiding, thereby facilitating the connection of the first rod member 31 and the second rod member 32 to the shell 53.

[0103] When the foldable baby crib is folded, Figure 1 The second end of the first rod member 31 is rotated downward, and in the process of rotation, the second end of the first rod member 31 is rotated from the first avoiding opening 531 to the third avoiding opening 533. At the same time, the second end of the second rod member 32 is rotated downward, and in the process of rotation, the second end of the second rod member 32 is rotated from the second avoiding opening 532 to the fourth avoiding opening 534. When the foldable baby crib is completely folded, the first rod member 31 is arranged in the third avoiding opening 533, and the second rod member 32 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 avoiding, thereby avoiding the interference of the shell 53 to the folding of the surrounding rod assembly 30.

[0104] In some embodiments, the second lock assembly 60 can adopt the same structure as the first lock assembly 50, as long as the second lock assembly 60 can adapt to the locking and unlocking needs of the rotation freedom degrees of the third rod member 41 and the fourth rod member 42. In this embodiment, since the first lock assembly 50 and the second lock assembly 60 adopt the same structure, it is beneficial to unify the standard of structural parts and facilitate the reduction of the replacement cost of parts.

[0105] In other embodiments, the second lock assembly 60 can also adopt a structure different from the first lock assembly 50.

[0106] For example, in combination with Figure 4 and Figure 6 The end of the reinforcing member 14 is connected with a mounting seat 15, and the third rod member 41 is rotationally connected to the mounting seat 15, so that the reinforcing member 14 is connected with the third rod member 41 through the mounting seat 15.

[0107] In combination with Figures 7 to 9The second locking assembly 60 comprises a locking piece 61, a reset elastic piece 62 and a transmission assembly 63. The locking piece 61 is movably connected to the mounting base 15, which includes but is not limited to that the locking piece 61 is directly movably connected to the mounting base 15. In some embodiments, the locking piece 61 can also be movably connected to the reinforcing member 14, so that when the end of the reinforcing member 14 is connected to the mounting base 15, the locking piece 61 is movably connected to the mounting base 15.

[0108] When the foldable baby crib is in the unfolded state, the locking piece 61 can extend into the third rod member 41 under the elastic force of the reset elastic piece 62, so as to limit the rotation of the third rod member 41 relative to the mounting base 15, and then the third rod member 41 will not rotate relative to the fourth rod member 42, so as to achieve the effect of locking the rotation freedom of the third rod member 41 and the fourth rod member 42.

[0109] The transmission assembly 63 is used to move the locking piece 61 away from the third rod member 41 under the driving of the second traction member 23, so that the locking piece 61 overcomes the elastic force of the reset elastic piece 62 and moves out of the third rod member 41. In this way, the locking piece 61 releases the locking of the third rod member 41, so that the third rod member 41 restores the rotation freedom of the rotation relative to the mounting base 15, and then the support assembly 40 can be folded.

[0110] In combination Figure 8 In some embodiments, the reinforcing member 14 is a hollow pipe, and the pipe wall near the end is provided with a first guide groove 14a, and the length direction of the first guide groove 14a is the same as the movement direction of the locking piece 61, that is, the same as the extension direction of the third rod member 41.

[0111] In combination Figure 8 And Figure 9 The transmission assembly 63 comprises a first transmission member 631 and a second transmission member 632. The first transmission member 631 is provided with a guide hole 631a and a second guide groove 631b penetrating the side wall of the guide hole 631a, one end of the locking piece 61 away from the third rod member 41 is slidingly fitted in the guide hole 631a, and a guide pin 61a is connected to the locking piece 61.

[0112] The guide pin 61a is provided in the first guide groove 14a and the second guide groove 631b. The length direction of the second guide groove 631b intersects the length direction of the first guide groove 14a, and the first transmission member 631 is telescopically arranged in the reinforcing member 14, so that the groove wall of the second guide groove 631b pushes the guide pin 61a to move along the first guide groove 14a.

[0113] When the guide pin 61a moves along the first guide groove 14a, it drives the locking piece 61 to move out of the third rod member 41, and then the locking piece 61 releases the locking of the third rod member 41, so that the third rod member 41 restores the rotation freedom of the rotation relative to the mounting base 15, and then the support assembly 40 can be folded.

[0114] It should be noted that the second transmission member 632 can drive the first transmission member 631 to move the guide pin 61a along the first guide slot 14a away from the third lever 41.

[0115] For example, in combination with Figures 7 to 9 The second transmission member 632 is connected with the second traction member 23 and can move upward along the vertical direction relative to the mounting base 15 under the drive of the second traction member 23. The side of the second transmission member 632 facing the first transmission member 631 is provided with a slope 632a, and part of the structure of the first transmission member 631 protrudes from the reinforcing member 14 and abuts against the slope 632a.

[0116] When the second traction member 23 drives the second transmission member 632 to move relative to the mounting base 15, the slope 632a of the second transmission member 632 pushes the first transmission member 631 into the reinforcing member 14, so that the first transmission member 631 drives the guide pin 61a to move along the first guide slot 14a away from the third lever 41. In turn, the guide pin 61a moves along the first guide slot 14a and drives the locking member 61 to move out of the third lever 41, so that the locking member 61 releases the locking of the third lever 41.

[0117] The side frame 10 can be provided with an elastic member for realizing the reset movement of the operation member 21, so that after the operation member 21 is rotated to the unlocking position and the user releases the operation of the operation member 21, the operation member 21 can be reset inward relative to the side frame 10 from the unlocking position, so as to avoid that the operation member 21 is too protruding outside the side frame 10 and affects the appearance or is easily scratched.

[0118] For example, in combination with Figure 10 The linkage unlocking mechanism 20 further comprises a first elastic reset member 24. The first elastic reset member 24 is connected with the operation member 21 and the first side frame 10a, and the first elastic reset member 24 is used to drive the operation member 21 to reset.

[0119] It should be noted that the first elastic reset member 24 can be directly connected with the operation member 21, or can be connected with the operation member 21 through other structural members, as long as it can realize the reset movement of the operation member 21. For example, in combination with Figure 10The linkage unlocking mechanism 20 further comprises a sliding block 25 arranged on the first side frame 10a and capable of sliding under the drive of the operating member 21. In this embodiment, the first elastic reset member 24 can be connected with the sliding block 25 and reset the operating member 21 by driving the sliding block 25 to slide relative to the first side frame 10a. The first traction member 22 and the second traction member 23 are fixedly connected with the sliding block 25. In this way, when the operating member 21 is operated to be unlocked, the operating member 21 can drive the sliding block 25 to move at the same time, and the first traction member 22 and the second traction member 23 are respectively unlocked to the first lock assembly 50 and the second lock assembly 60.

[0120] In the embodiment in which the operating member 21 is reversibly arranged on the side frame 10, the first elastic reset member 24 can be a torsion spring. For example, one end of the torsion spring is connected with the operating member 21, and the other end of the torsion spring is connected with the first side frame 10a.

[0121] When unlocking, an external force acts on the operating member 21, the operating member 21 is flipped in a direction away from the second side frame 10b, and the first elastic reset member 24 is elastically deformed. After unlocking is completed, the external force acting on the operating member 21 is removed, the first elastic reset member 24 restores the elastic deformation to drive the operating member 21 to flip in the opposite direction, thereby realizing the reset of the operating member 21.

[0122] In some embodiments, in combination with Figure 11 and Figure 12 The housing 53 is sleeved on the second end of the first rod member 31 and the second end of the second rod member 32, so that the second end of the first rod member 31 and the second end of the second rod member 32 can be covered by the housing 53, improving the appearance of the foldable baby bed when in use, and reducing the probability of being scratched by the first rod member 31 and the second rod member 32.

[0123] The rotating connection between the first rod member 31, the second rod member 32 and the housing 53 has multiple possibilities.

[0124] For example, in some embodiments, in combination with Figures 11 to 16 The housing 53 is provided with a first connecting hole 538, and the second end of the first rod member 31 is provided with a second connecting hole 311. The lock tongue 51 is provided with an avoiding hole 512, which is in the shape of a strip and extends along the length direction of the first rod member 31. The first connecting hole 538, the second connecting hole 311 and the avoiding hole 512 are in communication, and a first rotating connecting member is arranged in the first connecting hole 538, the second connecting hole 311 and the avoiding hole 512. In this way, when the first lock assembly 50 is switched between the locked state and the unlocked state, the lock tongue 51 will move along the length direction of the first rod member 31, and because the avoiding hole 512 of the lock tongue 51 is in the shape of a strip, the strip-shaped avoiding hole 512 can accommodate the first rotating connecting member.

[0125] Further, the shell 53 is further provided with a third connecting hole 539. The second end of the second rod member 32 is provided with a fourth connecting hole 321, and the lock plug 52 is provided with a fifth connecting hole 521. The third connecting hole 539, the fourth connecting hole 321 and the fifth connecting hole 521 are in communication, and the third connecting hole 539, the fourth connecting hole 321 and the fifth connecting hole 521 are provided with a second rotating connecting member.

[0126] In combination Figure 12 and Figure 14 , the shell 53 is provided with a limiting hole 535 and an arc-shaped hole 536 in communication with the limiting hole 535. The limiting hole 535 is arranged corresponding to the position between the first rod member 31 and the second rod member 32, and the arc-shaped hole 536 is arranged corresponding to the second end of the first rod member 31.

[0127] Further, the first lock assembly 50 further comprises a sliding member 55 arranged in the lock tongue 51. In the locked state, the sliding member 55 is arranged in the limiting hole 535. The sliding member 55 can move in the arc-shaped hole 536 in a direction away from the limiting hole 535, so as to switch the first lock assembly 50 from the locked state to the unlocked state. In the unlocked state, the sliding member 55 is located in the arc-shaped hole 536.

[0128] If the foldable baby crib needs to be folded, the operating member 21 is turned outward, and the operating member 21 drives the lock tongue 51 to move in a direction away from the lock plug 52, that is, under the driving of the first traction member 22, the sliding member 55 slides from the limiting hole 535 to the arc-shaped hole 536 and moves in the arc-shaped hole 536 in a direction away from the limiting hole 535. In this way, when the sliding member 55 slides in the arc-shaped hole 536, on the one hand, the first 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 31 can be driven to rotate downward.

[0129] If the foldable baby crib needs to be unfolded, the sliding member 55 moves in the arc-shaped hole 536 in a direction close to the limiting hole 535 until the sliding member 55 slides into the limiting hole 535. The hole wall of the limiting hole 535 limits the sliding member 55, so that the lock tongue 51 is fixed relative to the shell 53, and at the same time, the lock plug 52 is lapped on the lock tongue 51, so that the surrounding rod assembly 30 is fixed relative to the side frame 10.

[0130] In addition, in cooperation with the arc-shaped hole 536 and the sliding member 55, the movement of the sliding member 55 is guided, the stability of the movement of the sliding member 55 is improved, and the smoothness of unfolding and folding of the foldable baby crib is ensured.

[0131] Further, in combination Figure 12, the arc hole 536 is centered on the first connecting hole 538. In this way, the first rod member 31 rotates around the first connecting hole 538, avoiding interference with the rotation of the first rod member 31 by the arc hole 536, and ensuring the smoothness of the rotation of the first rod member 31.

[0132] In combination Figure 13 and Figure 14 , the first 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 31, and the second elastic return member 56 extends and contracts along the length direction of the first rod member 31. The second elastic return member 56 is used to drive the lock tongue 51 to move towards the direction of approaching the lock plug 52.

[0133] In combination Figure 15 , during the unlocking operation, the operating member 21 is flipped outward, and the operating member 21 drives the lock tongue 51 to move away from the lock plug 52 through the first traction member 22, and the second elastic return member 56 is gradually compressed.

[0134] Understandably, when the external force acting on the operating member 21 is removed, the second elastic return member 56 gradually expands, and under the action of the restoring force of the second elastic return member 56, the lock tongue 51 extends outward from the first rod member 31.

[0135] Optionally, the second elastic return member 56 is a spring, an elastic column, etc., without being limited thereto.

[0136] In combination Figure 15 and Figure 16 , when the first traction member 22 drives the lock tongue 51 to move away from the lock plug 52 to the point that the lock tongue 51 and the lock plug 52 are separated from each other, since the first lock assembly 50 is switched from the locked state to the unlocked state, then the first rod member 31 and the second rod member 32 can rotate relative to the shell 53.

[0137] It should be noted that when the first lock assembly 50 and the second lock assembly 60 are in the unlocked state, the foldable baby crib can be folded under the gravity of some structures of itself, or can be folded by, for example, the inward extrusion force of the user on the side frame 10.

[0138] For example, in combination Figure 17When the first lock assembly 50 and the second lock assembly 60 are unlocked, the second ends of the first and second rods 31 and 32 are rotated downward under the action of gravity, so that the first ends of the first and second rods 31 and 32 are folded toward the middle. At the same time, the second ends of the third and fourth rods 41 and 42 are flipped upward at the folding joint 43, so that the first ends of the third and fourth rods 41 and 42 are folded toward the middle. Based on this, the first and second side frames 10a and 10b are closer to each other during folding. In this way, the folding of the entire foldable crib can be realized, which is conducive to reducing the size of the foldable crib and reducing the space required for storing the foldable crib. In addition, the folding steps of the foldable crib can be simplified and the folding efficiency can be improved.

[0139] In combination Figure 18 When the foldable crib is completely folded, the first and second side frames 10a and 10b are attached to each other.

[0140] In some embodiments, an elastic member can be provided to provide power for folding the foldable crib, so that the folding operation is more convenient. The elastic member can be provided in various ways, as long as the elastic force of the elastic member can provide power for folding the surrounding rod assembly 30 or the support assembly after the first lock assembly 50 and the second lock assembly 60 are unlocked.

[0141] For example, in combination Figure 11 In some embodiments, the first lock assembly 50 further comprises a first folding elastic member 57. One end of the first folding elastic member 57 is connected to the housing 53, and the other end of the first folding elastic member 57 is connected to the first rod 31 and / or the second rod 32. When the first lock assembly 50 is unlocked, the first folding elastic member 57 is used to drive the second end of the first rod 31 and / or the second rod 32 to rotate downward. In this way, the surrounding rod assembly 30 can be quickly folded by using the gravity of the first and second rods 31 and 32 and the elastic force of the first folding elastic member 57, and the folding efficiency can be improved.

[0142] Alternatively, one first folding elastic member 57 is provided. One end of the first folding elastic member 57 is connected to the housing 53, and the other end of the first folding elastic member 57 is connected to the first rod 31; or one end of the first folding elastic member 57 is connected to the housing 53, and the other end of the first folding elastic member 57 is connected to the second rod 32, so that motion interference between the first folding elastic member 57 and the sliding member 55 can be avoided.

[0143] Alternatively, two first folding elastic members 57 are provided. One end of one of the first folding elastic members 57 is connected to the first rod 31, and the other end of the first folding elastic member 57 is connected to the housing 53. The other first folding elastic member 57 is connected to the second rod 32 and the housing 53 at both ends. In this way, the folding efficiency can be further improved.

[0144] For another example, in combination with Figure 1 and Figure 2 The foldable baby crib further comprises a second folding elastic member 70. When the first lock assembly 50 and the second lock assembly 60 are unlocked, the second folding elastic member 70 is used to drive the third rod member 41 to rotate relative to the first side frame 10a, thereby improving the folding efficiency.

[0145] The second folding elastic member 70 includes but is not limited to a spring, an elastic rope and the like.

[0146] For another example, in combination with Figure 11 The foldable baby crib further comprises a mattress 80. The mattress 80 is arranged on the support assembly 40. In use, the infant is placed on the mattress 80, and the mattress 80 plays a supporting role for the infant.

[0147] Optionally, in combination with Figure 11 The mattress 80 comprises a first pad body 81 and a second pad body 82.

[0148] The first pad body 81 and the second pad body 82 can be hard pad bodies. The first pad body 81 is arranged between the first side frame 10a and the folding joint 43, and the second pad body 82 is arranged between the second side frame 10b and the folding joint 43. The first pad body 81 and the second pad body 82 are foldably connected.

[0149] Optionally, the first pad body 81 is connected to the second pad body 82 through a soft fabric. In this way, when the foldable 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 foldable baby crib and improving the unfolding and folding efficiency of the foldable baby crib.

[0150] In some embodiments, in combination with Figure 2 The mattress 80 comprises a first pad body 81, a second pad body 82 and a third pad body 83.

[0151] The first pad body 81, the second pad body 82 and the third pad body 83 are hard pad bodies. The first pad body 81 is arranged between the first side frame 10a and the folding joint 43, the second pad body 82 is arranged between the second side frame 10b and the folding joint 43, and the third pad body 83 is arranged corresponding to the folding joint 43. 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 foldable 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 foldable baby crib and improving the unfolding and folding efficiency of the foldable baby crib.

[0152] In some embodiments, one end of the rail assembly 30 is movably connected to the first side frame 10a, and the other end of the rail assembly 30 is movably connected to the second side frame 10b. The rail assembly 30 is movable along the height direction of the first side frame 10a and the second side frame 10b, so as to realize the lifting of the rail assembly 30. In use, the rail assembly 30 can be pulled down, so as to facilitate the placement of the baby in the foldable baby crib and the taking out of the baby from the foldable baby crib. When the foldable baby crib is placed beside an adult, the rail assembly 30 can be pulled down, so as to facilitate the care of the baby by the adult without getting up. In addition, under normal circumstances, the rail assembly 30 can be pulled up, so as to ensure the safety of the baby.

[0153] One end of the support assembly 40 is movably connected to the first side frame 10a, and the other end of the support assembly 40 is movably connected to the second side frame 10b. In use, the support assembly 40 is movable along the height direction of the first side frame 10a and the second side frame 10b, so as to realize the lifting of the support assembly 40.

[0154] In some embodiments, the first side frame 10a and the second side frame 10b are both telescopic along the length direction thereof. Specifically, the first support 11 and the second support 12 are telescopic rods, the first support 11 is telescopic along the length direction thereof, and the second support 12 is telescopic along the length direction thereof. When the foldable baby crib is folded, the first support 11 and the second support 12 can be retracted, so as to reduce the height of the foldable baby crib, thereby reducing the packaging and transportation space and lowering the transportation cost without disassembling the foldable baby crib.

[0155] It should be noted that the foldable baby crib can be supported on the ground in a foot type or in a wheel type.

[0156] In combination Figure 13 In some embodiments, the foldable baby crib further comprises a synchronous mechanism 90. One end of the synchronous mechanism 90 is rotatably connected to the first side frame 10a, and the other end of the synchronous mechanism 90 is rotatably connected to the second side frame 10b. In this way, the left structure and the right structure of the first lock assembly 50 can be kept synchronous and consistent in the unfolding and folding. Figure 4 For example, the left structure and the right structure of the first lock assembly 50 can be kept synchronous and consistent in the unfolding and folding.

[0157] Further, in combination Figures 13 to 15The synchronous mechanism 90 comprises a fifth link 91, a synchronous wheel set 93, and a sixth link 92. The first end of the fifth link 91 is rotatably connected to the first side frame 10a, and the first end of the sixth link 92 is rotatably connected to the second side frame 10b. The synchronous wheel set 93 is rotatably arranged in the housing 53, and the synchronous wheel set 93 is arranged at the second end of the fifth link 91 and the second end of the sixth link 92. In this way, the synchronous wheel set 93 has a rotation freedom and rotates smoothly. During the unfolding and folding of the surrounding rod assembly 30 and the support assembly 40, the synchronous wheel set 93 plays a role of synchronous retention for the surrounding rod assembly 30 and the support assembly 40, so as to avoid asynchronous action and affect the unfolding and folding effect.

[0158] Optionally, in combination with Figure 16 and Figure 19 The synchronous 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 at the second end of the fifth link 91, the second fixed gear 933 is arranged at the second end of the sixth link 92, 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.

[0159] Of course, in another embodiment, the synchronous wheel set 93 can also be a synchronous belt wheel, without being limited thereto.

[0160] In combination with Figure 11 The bottom of the first side frame 10a and the second side frame 10b is provided with a moving wheel 100. In this way, the transfer of the foldable baby bed is facilitated.

[0161] Further, the moving wheel 100 is provided with a brake. In this way, the foldable baby bed can be stably stopped at the use location. Optionally, the brake can be in a manual control or a foot control mode.

[0162] 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 of 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.

[0163] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical characteristics. Thus, a feature with a "first" or "second" designation can explicitly or implicitly include at least one of the features. In the description of the present application, the term "plurality" means at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0164] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection", "fixing" and the like should be interpreted in a broad sense. For example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly 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.

[0165] In the present application, unless otherwise explicitly specified and limited, if there is a description such as "on" or "under" of the first feature to the second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" 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 "below", "under" 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.

[0166] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle 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 a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0167] 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 as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present application.

[0168] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A foldable crib, comprising: The utility model relates to a foldable baby bed, comprising: a side frame, including a first side frame and a second side frame, the first side frame and the second side frame are opposite and spaced apart along a first direction; a rail assembly, the rail assembly is arranged between the first side frame and the second side frame, the rail assembly includes a first rod and a second rod, the first end of the first rod is rotatably connected to the first side frame, the first end of the second rod is rotatably connected to the second side frame, the second end of the first rod and the second end of the second rod are rotatably connected; a support assembly, the support assembly is arranged between the first side frame and the second side frame, the support assembly includes a third rod, a fourth rod and a folding joint, the first end of the third rod is rotatably connected to the first side frame, the first end of the fourth rod is rotatably connected to the second side frame, the second end of the third rod and the second end of the fourth rod are rotatably connected through the folding joint; a first lock assembly, when the foldable baby bed is in an unfolded state, the first lock assembly limits the relative rotation of the first rod and the second rod; a second lock assembly, when the foldable baby bed is in an unfolded state, the second lock assembly limits the relative rotation of the third rod and the fourth rod; a linkage unlocking mechanism, the linkage unlocking mechanism includes an operating member, a first traction member and a second traction member, the operating member is movably connected to the first side frame and can be moved to an unlocking position relative to the first side frame, the operating member is connected to the first lock assembly through the first traction member, the operating member is connected to the second lock assembly through the second traction member, when the foldable baby bed is in an unfolded state, by operating the operating member to move to the unlocking position relative to the first side frame, the first traction member and the second traction member respectively link the first lock assembly and the second lock assembly to release the lock; wherein the first side frame and the second side frame each include a first support, a second support and a guardrail, the first support and the second support are spaced apart along a second direction, the second direction is perpendicular to the first direction, both ends of the guardrail are connected to the upper part of the first support and the upper part of the second support respectively, the support assembly includes a reinforcing member, both ends of the reinforcing member are connected to the lower part of the first support and the lower part of the second support respectively, the end of the reinforcing member is connected with a mounting seat, the third rod is rotatably connected to the mounting seat;The second lock assembly includes a locking member, a reset elastic member and a transmission assembly, the locking member is movably connected with the mounting seat, when the foldable baby bed is in an unfolded state, the locking member can extend into the third rod under the elastic force of the reset elastic member to limit the rotation of the third rod relative to the mounting seat, the transmission assembly is used to move the locking member away from the third rod under the driving of the second traction member, so that the locking member overcomes the elastic force of the reset elastic member and moves out of the third rod.

2. The foldable crib of claim 1, wherein, The operation member is reversibly installed on the first side frame; the linkage unlocking mechanism further comprises a first elastic reset member, which is connected with the operation member and the first side frame, and is used to drive the operation member to reset.

3. The foldable crib of claim 1 or 2, wherein, When the first lock assembly and the second lock assembly are unlocked, the second ends of the first and second rod members are rotated towards the support assembly, and the first ends of the first and second rod members are converged towards the middle; the second ends of the third and fourth rod members are rotated towards the surrounding rod assembly, and the first ends of the third and fourth rod members are converged towards the middle; and the first and second side frames are moved towards each other. The first lock assembly and the second lock assembly are structurally identical.

4. The foldable crib of claim 3, wherein, The first lock assembly comprises a lock tongue, a lock plug and a housing, the lock tongue is movably arranged on the second end of the first rod member, the lock plug is arranged on the second end of the second rod member, one end of the first traction member away from the operation member is connected with the lock tongue, and the second ends of the first and second rod members are rotatably connected with the housing. When the first lock assembly is in the locked state, the lock plug overlaps the lock tongue and restricts the rotation of the first and second rod members relative to the housing; when the first traction member drives the lock tongue to move away from the lock plug, the lock tongue is separated from the lock plug, so that the first and second rod members can rotate relative to the housing.

5. The foldable crib of claim 4, wherein, The first lock assembly further comprises a first convergence elastic member, one end of the first convergence elastic member is connected with the housing, and the other end of the first convergence elastic member is connected with the first and / or second rod member. When the first lock assembly is unlocked, the first convergence elastic member is used to drive the second ends of the first and / or second rod members to rotate towards the support assembly.

6. The foldable crib of claim 4, wherein, The first lock assembly further comprises a second elastic reset member, which is connected with the lock tongue and the first rod member, and is used to drive the lock tongue to move towards the lock plug along the length direction of the first rod member.

7. The foldable crib of claim 1, wherein, The first and second side frames each comprise a guardrail, and the two ends of the guardrail are respectively connected with the upper portions of the first and second support members.

8. The foldable crib of claim 1, wherein, The reinforcing member is a hollow pipe body, and a first guide groove is arranged on the pipe wall near the end portion, and the length direction of the first guide groove is the same as the movement direction of the locking member. The transmission assembly comprises a first transmission member and a second transmission member, the first transmission member is provided with a guide hole and a second guide groove penetrating the side wall of the guide hole, one end of the locking member away from the third rod member is slidingly fitted in the guide hole, and a guide pin is connected to the locking member, the guide pin is arranged in the first guide groove and the second guide groove, the length direction of the second guide groove intersects the length direction of the first guide groove, the first transmission member is telescopically arranged in the reinforcing member, so that the groove wall of the second guide groove pushes the guide pin to move along the first guide groove, and the guide pin drives the locking member to move out of the third rod member when moving along the first guide groove.

9. The foldable crib of claim 8, wherein, The second transmission member is connected with the second traction member, and can move upward relative to the mounting seat in the vertical direction under the driving of the second traction member, one side of the second transmission member facing the first transmission member is provided with an inclined surface, and part of the structure of the first transmission member protrudes from the reinforcing member and abuts against the inclined surface; when the second traction member drives the second transmission member to move relative to the mounting seat, the inclined surface pushes the first transmission member into the reinforcing member, so that the first transmission member drives the guide pin to move along the first guide groove in the direction away from the third rod member.

10. The foldable crib of claim 1, wherein, At least one of the following schemes is further included: The foldable baby crib further comprises a foldable mattress, and the mattress is arranged in the support assembly; Alternatively, one end of the rail assembly is movably connected to the first side frame, the other end of the rail assembly is movably connected to the second side frame, and the rail assembly can move along the height direction of the side frame, so that the rail assembly can be raised and lowered; Alternatively, one end of the support assembly is movably connected to the first side frame, the other end of the support assembly is movably connected to the second side frame, and the support assembly can move along the height direction of the side frame, so that the support assembly can be raised and lowered; Alternatively, the first side frame and the second side frame can be telescopically extended along the length direction thereof; Alternatively, the rail assembly is detachably connected to the first side frame and the second side frame, and the support assembly is detachably connected to the first side frame and the second side frame.

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