CN220800608U - Novel crib - Google Patents

Abstract

The utility model discloses a novel crib, which comprises a left bracket, a right bracket and two handrail groups, wherein each handrail group comprises a connecting seat and two handrails, opposite sides of the two handrails are respectively pivoted in two sides of the connecting seat, one side of the two handrails away from each other is respectively pivoted with the upper side of one side of the two side brackets, and a first locking mechanism for limiting the relative rotation of the two handrails and the corresponding side brackets is arranged between the handrails and the corresponding side brackets; each armrest group further comprises two linkage devices, one sides of the two linkage devices are respectively pivoted to two sides of the connecting seat, one side, away from each other, of each linkage device is respectively connected with the first locking mechanism on the corresponding side, and the linkage devices are also movably connected with the armrests; the connecting seat is moved downwards, and the linkage device can be driven to move so as to link the first locking mechanism to unlock. When the crib is in the unfolded state, the relative rotation between the armrests and the side supports is limited, so that the firmness of the crib can be improved, and the loose and unstable conditions of the crib are avoided.

Description

Novel crib

Technical Field

The utility model relates to the field of infant products, in particular to a novel crib.

Background

Baby cribs provide a comfortable sleeping/playing space for smaller children and are thus widely used in households with children.

The crib generally comprises a left bracket and a right bracket, and two handrail groups respectively pivoted on the upper sides of the two brackets, namely, two sides of one handrail group are respectively pivoted on the upper sides of one sides of the two brackets, and two sides of the other handrail group are respectively pivoted on the upper sides of the other sides of the two brackets. Each armrest group comprises a connecting seat and two armrests, one side of each armrest group, which is far away from each other, is respectively pivoted with the two side brackets, and the other side of each armrest group, which is far away from each other, is respectively pivoted with the two side brackets.

The conventional crib, handrail and side support are only pure pin joint, but do not set up the locking mechanical system that is used for restricting the relative rotation between them between the two to the crib even under the state of expanding, still can exist a certain amount of rotation degree between handrail group both sides and the side support, and this can lead to the firmness of crib under the state of expanding not enough, not stable enough, thereby make the crib after using a period, can appear the loose phenomenon of different degree, appear different degree rocking promptly. Which affects the safety of the crib.

Disclosure of utility model

The present utility model aims to overcome the above-mentioned drawbacks and provide a novel crib, wherein a locking device for limiting the relative rotation of the handrail and the corresponding side bracket is arranged between the handrail and the corresponding side bracket, so that the firmness of the crib can be improved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The novel crib comprises a left bracket, a right bracket and two handrail groups, wherein each handrail group comprises a connecting seat and two handrails, opposite sides of the two handrails are respectively pivoted in two sides of the connecting seat, one far away side of the two handrails is respectively pivoted with the upper sides of one sides of the two side brackets, and a first locking mechanism for limiting the relative rotation of the two handrails and the corresponding side brackets is arranged between the handrails and the corresponding side brackets; each armrest group further comprises two linkage devices, one sides of the two linkage devices are respectively pivoted to two sides of the connecting seat, one side, away from each other, of each linkage device is respectively connected with the first locking mechanism on the corresponding side, and the linkage devices are also movably connected with the armrests; the connecting seat is moved downwards, and the linkage device can be driven to move so as to link the first locking mechanism to unlock.

The first locking mechanism comprises a first locking piece connected with the handrail and capable of moving along the length direction of the handrail, and a locking part which is arranged on the side bracket and can be matched with the first locking piece; when the locking part is matched with the locking part, the first locking mechanism is in a locking state; the first locking piece moves towards the direction of the connecting seat and is separated from the locking part, and the first locking mechanism is unlocked; preferably, the locking part is a locking groove, and the locking groove is opened towards the direction of the connecting seat.

Each linkage device comprises a first linkage piece, a first elastic piece, a second linkage piece and a third linkage piece, wherein the first elastic piece, the second linkage piece and the third linkage piece are connected in the handrail and can move along the length direction of the handrail; one side of each first linkage piece is pivoted to two sides of the connecting seat, and the other side of each first linkage piece is pivoted with the corresponding second linkage piece; one side of the third linkage piece far away from the connecting seat is connected with the first locking piece, and the first elastic piece is arranged between one side of the third linkage piece facing the connecting seat and the second linkage piece.

A first notch which is downwards opened is formed in one side, away from the connecting seat, of the second linkage piece, a second notch which is upwards opened is formed in one side, facing the connecting seat, of the third linkage piece, the wall part, far away from one side of the connecting seat, of the first notch is positioned in the second notch, and the wall part, facing one side of the connecting seat, of the second notch is positioned in the first notch; one end of the first elastic piece is connected with the wall part of one side, far away from the connecting seat, of the first notch, and the other end of the first elastic piece is connected with the wall part of one side, facing the connecting seat, of the second notch.

The first linkage piece comprises a first part and a second part which extends upwards from one side, far away from the connecting seat, of the first part, one side of the first part is pivoted with the connecting seat, and one side, far away from the first part, of the second part is pivoted with the second linkage piece.

An assembling seat is fixedly connected to one side of the armrest, which is far away from the connecting seat, the assembling seat is pivoted to the side bracket, and a first long through hole for the first locking piece to pass through is formed in the side wall of the side of the assembling seat, which faces the side bracket; preferably, the wall of the handrail tube is provided with a second long through hole at a position corresponding to the first long through hole, and one side of the first locking piece sequentially penetrates out of the second long through hole and the first long through hole.

The two sides of the armrest group can also move up and down relative to the two side brackets, the two side brackets are respectively provided with a moving part which can move up and down relative to the two side brackets at corresponding positions, the assembling seat is pivoted with the moving part, and the locking part is arranged on the assembling seat; preferably, a third locking mechanism for limiting the relative movement of the moving piece and the side bracket is arranged between the moving piece and the side bracket, and an unlocking device for unlocking the third locking mechanism is arranged on the assembly seat.

A second locking mechanism for limiting the relative rotation of the handrail and the connecting seat is arranged between each handrail and the connecting seat; preferably, a mating member is relatively and fixedly connected to one side of each armrest facing the connecting seat, and the mating member is at least partially positioned in the connecting seat; the second locking mechanism is arranged between the matching piece and the connecting seat; preferably, the second locking mechanism comprises a second locking piece, a tension spring and a matching hole arranged on the matching piece, and the second locking piece is arranged in the matching hole in a penetrating manner and can be connected with the connecting seat in a relatively up-and-down moving manner; the cooperation hole includes arc stroke section and certainly stroke section downside downwardly extending's locking section, the extension spring downside is connected with the connecting seat, and the upside is connected with the second locking piece, when the handrail group is in under the state of expanding, under the effect of extension spring, the locking section in cooperation piece cooperation hole is worn to locate by the second locking piece.

The armrest set further comprises an unlocking piece, a second elastic piece and a second locking piece, wherein the upper side of the unlocking piece is connected in the lower side of the connecting seat in a relatively up-down moving mode, the second elastic piece is arranged between the unlocking piece and the connecting seat and can drive the unlocking piece to move downwards, and the lower side of the second locking piece is located above the unlocking piece when the armrest set is in an unfolding state.

The second locking piece is arranged as a square piece, and the locking section of the matching hole is also arranged as a square. Because the utility model adopts the technical scheme, the utility model has the following beneficial technical effects:

1. The first locking mechanism for limiting the relative rotation of the handrail and the corresponding side bracket is arranged between the handrail and the corresponding side bracket, so that when the crib is in a unfolded state, the relative rotation between the handrail and the side bracket is limited, the firmness of the crib can be improved, the situation that the crib is loose and unstable in the unfolded state can be avoided, and the crib is prevented from shaking;

2. The second locking mechanism for limiting the two is arranged between the armrests and the connecting seat, and when the crib is in a unfolding state, the first locking mechanism and the second locking mechanism are both in a locking state, namely, the middle of the armrests are locked, and simultaneously, the two sides of the armrests and the brackets on the two sides are also locked, so that the firmness of the crib is further improved, and the crib is safer to use;

3. When the connecting seat rotates downwards, the linkage device can be linked to unlock the first locking mechanism, namely, the unlocking of the first locking mechanism can be realized when the armrest group is folded, so that the unlocking of the first locking mechanism does not need additional operation, and the folding operation of the baby crib can not be complicated due to the setting of the first locking mechanism and the linkage device or can be carried out as long as the folding operation of the baby crib is carried out as the folding operation of the baby crib without the first locking mechanism and the linkage device;

4. When the connecting seat rotates upwards, the linkage device can be linked to push the first locking mechanism, when the armrest group is restored to the unfolded state, the first locking mechanism is in the locked state again, the armrest and the side support cannot rotate relatively, namely, when the second locking mechanism of the armrest group is restored to the locked state, the first locking mechanism is also linked to be in the locked state again, so that the unfolding operation of the crib disclosed by the utility model is not complicated due to the fact that the first locking mechanism and the linkage device are set, or the unfolding operation of the crib is just carried out as the same as the unfolding operation of the crib without the first locking mechanism and the linkage device.

Drawings

FIG. 1 is a perspective view of a crib of the present utility model in an expanded state;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of an explosion according to FIG. 2;

FIG. 4 is an enlarged schematic view of the crib handrail assembly of the present utility model;

FIG. 5 is an exploded view of a portion of the arm rest assembly of the crib of the present utility model;

FIG. 6 is a schematic cross-sectional view in the direction B-B according to FIG. 1;

FIG. 7 is an enlarged schematic view according to portion E of FIG. 6;

FIG. 8 is an enlarged schematic view according to section F of FIG. 6;

FIG. 9 is an enlarged schematic view of a section in the direction C-C according to FIG. 2;

FIG. 10 is an enlarged schematic view according to section D of FIG. 4;

FIG. 11 is an exploded perspective view according to FIG. 10;

FIG. 12 is an enlarged schematic view of an explosion plan according to a portion of the assembly of FIG. 11;

FIG. 13 is an exploded enlarged plan view according to FIG. 12;

fig. 14 is an exploded enlarged perspective view according to fig. 13;

FIG. 15 is an enlarged view of the crib of the present utility model after folding;

FIG. 16 is an enlarged schematic view of a portion of the arm rest assembly of the crib of the present utility model after folding;

FIG. 17 is an exploded, enlarged schematic view of a portion of the assembly of FIG. 16;

Fig. 18 is an exploded enlarged view of another embodiment of the first locking mechanism of the crib of the present utility model.

Detailed Description

As shown in fig. 1 to 16, the present utility model discloses a novel crib, which can be converted between an unfolding state and a folding state, wherein the crib comprises a left side bracket 201, a right side bracket 201 and two armrest groups 100, each armrest group 100 comprises a connecting seat 1 and two armrests 2, opposite sides of the two armrests 2 are respectively pivoted in two sides of the connecting seat 1, one side of the two armrests 2 away from each other is respectively pivoted with the upper side of one side of the two side brackets 201, namely, one side of the two armrest groups 100 in the two armrest groups 2 away from each other is respectively pivoted with the upper side of one side of the two side brackets 201, and one side of the other armrest group 100 away from the two armrests 2 is respectively pivoted with the upper side of the other side of the two side brackets 201. A first locking mechanism for limiting the relative rotation of the handrail 2 and the corresponding side bracket 201 is arranged between the handrail and the corresponding side bracket; each armrest group 2 further comprises two linkage devices, one sides of the two linkage devices are respectively pivoted to two sides of the connecting seat, one side, away from each other, of each linkage device is respectively connected with a first locking mechanism on the corresponding side, and the linkage devices are also movably connected with the armrests 2; the connecting seat 1 is moved downwards, and the linkage device can be driven to move so as to link the first locking mechanism to unlock.

The first locking mechanism comprises a first locking piece 71 connected with the handrail 2 and capable of moving along the length direction of the handrail 2, and a locking part 203 arranged on the side bracket 201 and used for being matched with the first locking piece 71. When the locking part 203 is matched with the locking part 203, the first locking mechanism is in a locking state, and the handrail 2 and the side bracket 201 cannot rotate relatively; the first locking piece 71 moves toward the connecting seat and is disengaged from the locking portion 203, the first locking mechanism is unlocked, and the armrest 2 and the side bracket 201 can rotate relatively.

In this embodiment, the locking portion 203 is configured as a locking groove 203, and the locking groove 203 is opened toward the direction of the connection seat 1, and when the first locking member 71 is snapped into the locking portion 203, the first locking mechanism is in a locked state; when the first locking piece 71 moves toward the connecting base 1 and is disengaged from the locking portion 203, the first locking mechanism is unlocked. Specifically, the side bracket 201 is provided with two protruding blocks 205 protruding toward the armrest 2 at intervals, and a gap between the protruding blocks 205 is formed as the locking groove 203 (as shown in fig. 3).

The linkage device comprises a first linkage piece 72, a first elastic piece 73, a second linkage piece 74 and a third linkage piece 75, wherein the first elastic piece 73, the second linkage piece 74 and the third linkage piece 75 are connected in the handrail 2 and can move along the length direction of the handrail 2; one sides of the two first linkage pieces 72 are respectively pivoted to two sides of the connecting seat 1, and the other side of the first linkage piece 72 is pivoted with the second linkage piece 74; the side of the third linkage member 75 away from the connecting seat 2 is connected with the first locking member 71, and the first elastic member 73 is disposed between the side of the third linkage member 75 facing the connecting seat 2 and the second linkage member 74.

An assembling seat 8 is fixedly connected to one side of the handrail 2 away from the connecting seat 1, and the assembling seat 8 is pivoted to the side bracket 201. In this embodiment, one side of the armrest 2 extends into the assembly seat 8, and then connects the armrest 2, the assembly seat 8 and the side bracket 201 via a rotation shaft 755. Further, the third link 75 is further provided with a long through hole 754, and the rotation shaft 755 passes through the long through hole 754. Thus, the assembly is simpler and more convenient. Correspondingly, a first long through hole 81 for the first locking piece 71 to pass through is arranged on the side wall of the assembly seat 8 facing to the side bracket, so that the movement of the first locking piece 71 is not interfered.

The wall of the handrail 2 is provided with a second long through hole 21 at a position corresponding to the first long through hole 81, and one side of the first locking member 71 sequentially passes through the second long through hole 21 and the outside of the first long through hole 21, so that the first locking member 71 can move relative to the handrail 2 and the assembling seat 8 to be engaged with or disengaged from the locking groove 203 of the side bracket 201. When the length of the handrail 2 is long, the third linkage member 75 may be configured to connect two components, so that the processing is convenient; the third link 75 may also be provided as an integral one piece when the handrail 1 is short in length.

Preferably, the first linkage member 72 includes a first portion 721 and a second portion 722 extending upward from a side of the first portion 721 away from the connecting seat 1, wherein the first portion 721 is pivotally connected to the connecting seat 1, and the second portion 722 is pivotally connected to the second linkage member 74 on a side of the second portion 722 away from the first portion 721. With this arrangement, the pivot position of the first link 72 and the connecting seat 1, and the pivot position of the first link 72 and the second link 74 have both a distance in the length direction of the armrest and a distance in the vertical height, so that the link has a suitable moving space, and the first lock 71 can be driven to move by the link to engage with or disengage from the lock portion 203 when the connecting seat 1 moves up and down. Further, the first portion 721 is pivotally connected to the lower side of the connection seat 1, i.e. the first linkage member 72 is pivotally connected to the lower side of the connection seat 1, so that the linkage device can be smoothly linked when the connection seat 1 moves up and down, i.e. the first locking mechanism can be smoothly locked/unlocked.

The wall of the handrail 2 is provided with a third long through hole 22 extending along the length direction of the handrail 2, a connecting hole 720 is formed on one side of the first linkage member 72 away from the connecting seat and the second linkage member 74, that is, one side of the second portion 722 away from the first portion 721 is provided with a connecting hole 720, and a first connecting member (not shown, may be a rivet or similar common connecting member) passes through the connecting hole 720 of the first linkage member 72, the third long through hole 22 on the wall of the handrail 2, and the connecting hole 740 on the second linkage member 74, so as to connect the handrail 2, the first linkage member 72, and the second linkage member 74.

A first notch 741 which is opened downwards is arranged at one side of the second linkage 74, which is away from the connecting seat 1, a second notch 751 which is opened upwards is arranged at one side of the third linkage 75, which is toward the connecting seat, and a wall 742, which is away from one side of the connecting seat, of the first notch 741 is positioned in the second notch 751, and a wall 752, which is toward one side of the connecting seat, of the second notch 751 is positioned in the first notch 741; the first elastic member 73 is configured as a compression spring, and one end of the compression spring is connected to the wall portion 742 on the side of the first notch 741 away from the connection base, and the other end is connected to the wall portion 752 on the side of the second notch 751 toward the connection base (as shown in fig. 8). And because of the action of the compression spring, the wall portion 752 of the second notch 751 facing the connecting seat side abuts against the side wall 743 of the first notch 741 facing the connecting seat 1 side in the unfolded state of the crib.

When the crib is in the unfolded state, one side of the first linkage piece 72 away from the connecting seat 1 is positioned at one side of the third long perforation 22 of the pipe wall of the handrail 1 facing the side bracket 201, so that the second linkage piece 74 is also driven to be positioned at a position facing the side bracket 201; the side wall 743 of the second linkage 74 facing the connecting seat 1 pushes the wall 752 of the third linkage 75 facing the connecting seat 1 to move toward the side bracket 201, so as to drive the first locking member 71 to be locked in the locking groove 203, and the handrail 2 and the side bracket 201 cannot rotate relatively. Therefore, the firmness of the crib can be improved, the crib cannot be loose and unstable in the unfolded state, the crib is prevented from shaking, and the crib is safer to use.

A second locking mechanism for locking the two in the unfolded state is arranged between each armrest 2 and the connecting seat 1, so that when the crib is in the unfolded state, the second locking is in the locked state, and the first locking mechanism is also in the locked state. Therefore, when the crib is in the unfolding state, the middle of the armrest set is locked, and simultaneously, the rotation of the brackets at the two sides of the armrest set and the brackets at the two sides is also locked, so that the firmness of the crib is further improved.

Each handrail 2 is towards the relative fixedly connected with mating part 4 of one side of connecting seat 1, mating part 4 is at least partly located in the connecting seat 1 because mating part 4 and handrail 2 relative fixedly set up, so set up to realize the relative side of two handrails 2 pin joint respectively in the purpose of connecting seat 1 both sides.

The second locking mechanism is arranged between the matching piece 4 and the connecting seat 1. In this embodiment, the second locking mechanism includes a second locking member 51, a tension spring 52, and a mating hole 41 disposed on the mating member 4, where the second locking member 51 is disposed through the mating hole 41 and is connected to the connecting seat 1 in a manner of relatively moving up and down; the mating hole 41 includes an arc-shaped travel section 411 and a locking section 412 extending downward from the lower side of the travel section 411, the lower side of the tension spring 52 is connected with the connecting seat 2, the upper side of the tension spring is connected with the second locking member 51, and when the armrest set 100 is in the unfolded state, under the action of the tension spring 52, the second locking member 51 penetrates through the locking section 412 of the mating hole 41, so that the two armrests 2 and the connecting seat 1 cannot rotate relatively, and the armrest set 100 is locked in the unfolded state.

The mating holes 41 of the two mating members 4 are symmetrically arranged, and correspondingly, two elongated holes 14 extending up and down are symmetrically arranged on two sides of each side wall 11 of the connecting seat, and the second locking member 51 penetrates through the elongated holes 14 on the side wall 11 of the connecting seat 1 and the mating holes 41 on the mating members 4. When the armrest set 100 is in the unfolded state, two sides of the fitting piece 4 outside the fitting hole 41 respectively abut against the bottom walls of the long holes 14 on two side walls of the connecting seat 1.

Preferably, the second locking member 51 is a square member, and the locking section 412 of the mating hole 41 is also a square member. By adopting the square piece, the contact area between the second locking piece 51 and the matching piece 4 can be increased, so that the deformation of the second locking piece 51 and the matching piece 4 caused by the stress can be reduced. In this way, the stability of the second locking member 51 in cooperation with the mating member 4 can be ensured, so as to further ensure the firmness and stability of the crib in the unfolded state; the smooth and stable relative rotation function of the connecting seat 1 and the two armrests 2 can be ensured, namely the stability of the folding and unfolding operation function of the armrest group 100, namely the stability of the folding and unfolding operation function of the crib is ensured.

In this embodiment, the second locking member 51 is provided as a square tube. Preferably, after the square tube passes through the long hole of the connecting seat 1 and the mating hole 41 of the mating piece 4, a reusable second connecting piece (may be a conventional connecting piece such as a rivet, not shown) passes through the square tube back and forth, and the second connecting piece is further connected with the connecting seat 1, so as to ensure that the square tube cannot be separated from the armrest group 100, and further, the stability of the function of the second locking mechanism is ensured.

The armrest set 100 further includes an unlocking member 61 having an upper side relatively movably connected to the lower side of the connecting seat 1, and a second elastic member 62 disposed between the unlocking member 61 and the connecting seat 1 and capable of driving the unlocking member 61 to move downward, where the lower side of the second locking member 51 is located above the unlocking member 61 when the armrest set 100 is in the unfolded state. Preferably, when the armrest set 100 is in the unfolded state, the lower end of the second locking member 51 abuts against the unlocking member 61, so that the second locking member 51 can be pushed to move upwards only by moving the unlocking member 61 upwards, thereby enabling the folding operation of the armrest set 100 to be faster.

Preferably, the unlocking member 61 is provided with an upwardly opened accommodating cavity 611, and the lower side of the mating member 4 is located in the accommodating cavity 611. So set up, the both sides of second locking piece 51 are located the top of holding chamber 611 two chamber walls 6110 respectively to when unblock piece 61 upwards moved, the both sides of every second locking piece 51 can both be upwards moved simultaneously, thereby can avoid second locking piece 51 slope, and then avoid causing the unblock operation of two second locking mechanism to be asynchronous, so, further guarantee the rotatory synchronization of two armrests 2 relative connecting seat 1 when folding handrail group 100/crib.

Preferably, the second elastic member 62 is also provided with two pieces, which are respectively disposed between two sides of the unlocking member 61 and two sides of the connecting seat 1. In this way, the unlocking member 61 is more uniformly stressed, and no inclination occurs when the unlocking member moves downwards or upwards, so that synchronous movement and rotation of the second locking members 51 on both sides can be ensured. The second elastic member 62 is also provided as a compression spring.

The two sides of the side wall 11 of the connecting seat are respectively provided with a round hole 110, the two cavity walls of the unlocking piece accommodating cavity 611 are respectively provided with a long accommodating hole 612 extending up and down, and two third connecting pieces 621 (similarly, conventional connecting pieces like rivets) respectively pass through the round holes 110 and the long accommodating holes 612 on the corresponding sides of the two side walls 11 of the connecting seat, so that the purpose that the unlocking piece 61 can be connected to the connecting seat 1 relatively and vertically movably is realized. The two second elastic members 62 are respectively disposed in the corresponding positions of the receiving cavity 611 of the unlocking member 61, the long receiving holes on both sides, and the upper ends of the second elastic members 62 are abutted against the third connecting member 621, and the lower ends are abutted against the bottom wall of the long receiving hole 612.

The lower sides of the two sides of the unlocking piece 61 are respectively provided with a dodging hole 613 which extends up and down or a dodging hole 613 with a downward opening, the two sides of each side wall 11 of the connecting seat are respectively provided with a connecting hole 111, two connecting pieces (which can be rivet or similar conventional connecting pieces and are not shown) respectively penetrate through the connecting holes 111 of the two side walls of the connecting seat 1 and the dodging hole 613 of the unlocking piece 61, and the lower side of the tension spring 52 is connected with the connecting piece, so that the purpose that the lower side of the tension spring 52 is connected with the connecting seat 1 is realized. Preferably, a connecting hole 723 is also provided on a side of the first linkage member 72 facing the connecting seat 1, and the connecting member on the corresponding side passes through the connecting hole 723 of the first linkage member 72, the connecting hole 111 on the side wall of the connecting seat 2 and the avoiding hole 613 of the unlocking member 61, so as to connect the first linkage member 72, the connecting seat 1 and the tension spring 52. Thus, not only is the assembly simpler and more convenient, but also the whole structure of the armrest group is more compact.

Because the crib of the utility model adopts the arrangement, when the crib 200 of the utility model is to be folded, the unlocking piece 61 is moved upwards, so that the square tube 51 is pushed, the square tube 51 moves upwards to be separated from the locking section 412 of the connecting iron sheet matching hole 41 and enters the stroke section 411, meanwhile, the square tube 51 is also positioned on the upper side of the long hole of the side wall 11 of the connecting seat, the second locking mechanism is unlocked, and the handrail 2 and the connecting seat 1 can relatively rotate; at this time, the connecting seat 1 and the unlocking member 61 are moved downward without releasing the unlocking member 61, the side of the first linkage member 72 pivoted to the connecting seat 1 is also moved downward and rotated relative to the connecting seat 1, so that the other side of the first linkage member 72 pulls the second linkage member 74 to move along the length direction of the armrest 2 toward the connecting seat 1, thus pushing the first elastic member 73 and the third linkage member 75 to move toward the connecting seat 1, so that the first locking member 71 connected to the third linkage member 75 is also moved toward the connecting seat to be separated from the locking groove 203, that is, the first locking member 71 is separated from the engagement with the locking portion 203 on the side bracket 201, the first locking mechanism is unlocked, and the armrest 2 can rotate relative to the side bracket 201; meanwhile, in the process of moving the connecting seat 1 downwards, the opposite sides of the two armrests 2 are driven to move downwards and rotate relative to the connecting seat 1, in the rotating process, the relative positions of the second locking piece 51 and the connecting seat 1 are kept unchanged, the stroke section 411 of the matching piece 4 is scratched along the second locking piece 51, namely, along with the rotation of the armrests 2, the second locking piece 51 is relatively positioned at different positions of the stroke section 411 of the matching hole 41, when the second locking piece 51 is relatively positioned at the position of the upper side of the non-locking section 412 of the stroke section 411 of the matching hole 41, the unlocking piece 61 can be released, and under the action of the second elastic piece 62, the unlocking piece 61 is reset. When the two side brackets 201 are relatively close to each other and cannot move any more (as shown in fig. 15), the crib 200 of the present utility model is folded. In the retracted state, the two armrests of each armrest set are in a substantially parallel state, the second locking member 52 is disposed on a side of the travel section 411 away from the locking section 412 (as shown in fig. 16 and 17), the connection between the first linking member 72 and the second linking member 74 is located on a side of the third long through hole 22 facing the connection seat, the first elastic member 73 is in a compressed state, and the first locking member 71 connected to the third linking member 75 is also kept in a state of being disengaged from the locking groove 203.

When the folding crib 200 is to be unfolded, the connecting seat 1 is moved upwards, the opposite sides of the two armrests 2 and the opposite sides of the two first linkage pieces 72 are moved upwards along with the connecting seat 1 and rotate relative to the connecting seat 1, the travel section 411 of the matching hole 41 of the matching piece 4 is scratched along the second locking piece 51 reversely, the other side of the first linkage piece 72 drives the second linkage piece 74 to move towards the side bracket 201, and the second linkage piece 74 pushes the third linkage piece 75 to move towards the side bracket 201; when the crib 200 is in the unfolded state again, the second locking piece 51 moves downwards under the action of the tension spring 52 and is matched with the locking section 412 of the matching hole 41 again, so that the handrail 2 is locked with the connecting seat 1 again; the first locking piece 71 is again engaged in the locking groove 203 to lock the armrest 2 and the side bracket 201, and thus, the crib 200 is again locked in the unfolded state together.

Because the opposite sides of the two armrests 2 are respectively pivoted to the two sides of the connecting seat 1, one side of the two first linkage members 72 is also respectively pivoted to the two sides of the connecting seat 1, and the other side of the first linkage members 72 is pivoted to the second linkage members 74, the second linkage members 74 are movably connected with the armrests 2 along the length direction of the armrests 2, so that the two armrests 2 can synchronously rotate and move relative to the connecting seat 1 when the connecting seat 1 moves downwards/upwards in the folding/unfolding process of the crib, the two first linkage members 72 can synchronously rotate and move relative to the connecting seat 1, and the two first locking members 71 mechanisms can also be synchronously unlocked/locked, thereby the two side brackets 201 can be pulled to synchronously move by the two armrests 2 in the folding/unfolding process of the crib, and the situation that the two side brackets 201 move out of synchronism due to the fact that the two armrests 2 of the conventional crib 200 rotate out of synchronism in the folding process of the crib can be avoided, and the situation that the two side brackets 201 tilt is caused by the fact that the two armrests 2 of the conventional crib 200 rotate out of synchronism in the folding/unfolding process of the crib is simpler and more convenient.

Referring to fig. 2, 3 and 9, in this embodiment, the two sides of the armrest set 100 may further move up and down relative to the two side brackets 201, the two side brackets 201 are respectively provided with a moving member 76 that can move up and down relative to the two side brackets, the assembling seat 8 is pivotally connected to the moving member 76, and the locking portion 203 is disposed on the assembling seat 8.

A third locking mechanism for limiting the relative movement of the moving member 76 and the side bracket 201 is arranged between the moving member and the side bracket 201, and an unlocking device for unlocking the third locking mechanism is arranged on the assembly seat 8.

The third locking mechanism comprises a third locking piece 91, a third elastic piece 92, a limit groove 2011 arranged on the side bracket 201, a containing groove penetrating through the moving piece 76 and a blocking piece 93 which is connected to the assembling seat 8 in a relatively movable manner; the accommodating groove comprises a first section facing the assembling seat 8 and a second section facing the side bracket, the diameter of the first section is larger than that of the second section, the third locking piece 91 comprises a head 911 and a limiting part 912 extending from the head 911 to the side bracket 201, the diameter of the limiting part 912 is larger than that of the head 911, and the limiting part 912 extends into the second section from the first section; the third elastic member 92 is configured as a compression spring, and is located in the first section and sleeved outside the limiting portion 912, so that one end of the third elastic member abuts against the head 911, and the other end abuts against the bottom wall of the first section; the assembly seat 8 is provided with a containing cavity 80 at one side away from the connecting seat 1, and a long through hole 801 is formed in the cavity wall of the containing cavity 80 at one side facing the moving part 76; the blocking part 931 is protruded on one side of the blocking part 93 facing the moving part 76, the blocking part 93 is located in the accommodating cavity 80, and the blocking part 931 is protruded out of the accommodating cavity 80.

The unlocking device comprises a button 94, a fourth elastic piece 95 and a locking device, wherein one side of the button 94 is connected in the accommodating cavity 80 and can move along the connecting direction of the assembling seat 8, and the fourth elastic piece 95 is arranged between the button 94 and the assembling seat 8; the button 94 is connected to the blocking member 93. When the crib is in the unfolded state, under the action of the fourth elastic member 95, the button 94 moves out of the accommodating cavity 80 to drive the blocking member 93 to move, so that the blocking portion 931 of the blocking member 93 is blocked by the head portion 911 of the third locking member 91 and cannot move outwards, and one side of the limiting portion 912 of the third locking member 91, which is away from the assembling seat 8, extends into the limiting groove 2011 of the side bracket 201, so that the moving member 76 cannot move up and down relative to the side bracket 201.

When the armrest set 100 is to be moved up and down, the button 94 is moved toward the connecting seat, so as to drive the blocking member 93 to move together, and when the blocking portion 931 is staggered from the head 911 of the third locking member 91 to no longer form a blocking for the blocking portion, the third locking member 91 is moved toward the assembling seat 8 under the action of the third elastic member 92, and the limiting portion 912 thereof is disengaged from the limiting groove 2011 of the side bracket 201, so that the armrest set 100 can be moved up and down together with the moving member 76 opposite to the side bracket 201.

One side of the handrail 2 extends into one side of the assembling seat 8 facing the connecting seat 1, and one side of the button 94 is movably connected into one side of the assembling seat 8 facing away from the connecting seat 1, so that the assembling seat 8 does not interfere with the connecting seat 1.

In another embodiment, as shown in fig. 18, fig. 18 illustrates an exploded enlarged view of a part of the assembly of a handrail 2 and a side bracket 201 (or a column 202) of the handrail set 100 on the left side in fig. 1, the handrail 2 is pivoted to only the side brackets 201 and cannot move up and down relative to the side brackets 201, so that the moving member 76 and the third locking mechanism and the unlocking device are not required, but the assembling base 8 is directly pivoted to the side brackets 201, and the locking portion 203 and the two protrusions 205 are directly arranged on the side brackets 201.

Preferably, each armrest set 100 further includes two synchronizing members 3, one sides of the two synchronizing members 3 are respectively pivoted to the two armrests 2, and the other sides of the two synchronizing members 3 are pivoted to the connecting seat 1 through the same shaft 31 and can move up and down relative to the connecting seat 1.

The other sides of the two synchronizing pieces 3 are also positioned in the connecting seat 1 so as to avoid being influenced by foreign objects, and the other sides of the two synchronizing pieces 3 are pivoted with the middle part of the connecting seat 1 in the length direction through the same rotating shaft and can move up and down relative to the connecting seat 1. In this embodiment, the middle parts of the two side walls 11 of the connecting seat 1 are respectively provided with a vertically extending synchronization slot 13, the other sides of the two synchronizing members 3 are respectively provided with a pivot hole 31, and a pivot shaft 31 sequentially passes through the synchronization slot 13 of one side wall 11 of the connecting seat 1, the pivot hole 31 of the other side of the two synchronizing members 3, and the synchronization slot 13 of the other side wall 11 of the connecting seat 1, thereby realizing the purposes that the other side of the two synchronizing members 3 is coaxially pivoted with the connecting seat 1 and can move up and down relative to the connecting seat 1.

Further, the pivot positions of the two synchronizing members 3 and the two armrests 2 are symmetrically arranged with the central line of the connecting seat 1 in the length direction as a symmetrical axis. The pivot joint positions of the two armrests 2 and the connecting seat 1 are symmetrically arranged by taking the central line of the connecting seat 1 in the length direction as a symmetrical axis. By the arrangement, synchronous rotation and movement of the two armrests 2 relative to the connecting seat 1 can be further ensured.

The connecting seat 1 includes a top wall 12 and two side walls 11 extending downward from front and rear ends of the top wall 12. The opposite sides of the two armrests 2 are positioned between the two side walls 11, thereby realizing the purpose that the opposite sides of the two armrests 2 are respectively pivoted in the two sides of the connecting seat 1; this is common knowledge and is not described in detail. Similarly, the other side of the two synchronizing members 3 is also located between the two side walls 11.

Each of the synchronizing members 3 is pivotally connected to the corresponding side of the connecting seat 1 at different positions of the corresponding side armrest 2, and when the armrest set 100 is in the unfolded state, the pivot position of each of the synchronizing members 3 and the corresponding side armrest 2 is located above the pivot position of the corresponding side armrest 2 and the connecting seat 1. Specifically, one side of each synchronizing member 3 is pivotally connected to the corresponding side armrest 2 via a first shaft 30, the corresponding side armrest 2 is pivotally connected to the connecting seat 1 via a second shaft 20, and the first shaft 30 is located above the second shaft 20 when the armrest set 100 is in the unfolded state.

In this embodiment, one of the synchronizing members 3 is pivotally connected to the front side of one of the mating members 4, and the other synchronizing member 3 is pivotally connected to the rear side of the other mating member 4. So arranged, the two synchronizing members 3 are arranged on the same side of the two mating members 4. The thickness of the whole formed by the two matching parts 4 and the two synchronizing parts 3 is thinner, and the required front and rear spaces are smaller, so that the whole thickness of the connecting seat 1 can be made thinner, the part of the armrest set 100 is lighter, thinner and more attractive, and the material cost is saved.

In this embodiment, the matching parts 4 are configured to be connected with iron sheets, and an auxiliary part 40 is fixedly connected to one side of each armrest 2 facing the connecting seat 1, and one side of the auxiliary part 40 extends out of the armrest 2, and the other side is located in the armrest 2; the other side of the connecting iron sheet penetrates into the middle position of the auxiliary piece 40 and is fixedly connected with the auxiliary piece 40 and the handrail 2 relatively. Namely, a mounting cavity 401 extending along the length direction of the auxiliary member 40 and matched with one side of the connecting iron sheet is arranged in the middle of the auxiliary member 40, when the auxiliary member is assembled, the other side of the connecting iron sheet 4 extends into the mounting cavity, then one side of the auxiliary member 40 is inserted into the handrail 2, and finally the handrail 2, the auxiliary member 40 and the connecting iron sheet 4 are fixedly connected. So set up, auxiliary member 40 can adopt the lighter material of weight such as plastic, and connect iron sheet 4 need not make very thick, but because the material of its iron sheet, connect handrail 2 and connecting seat 1's joint strength can be guaranteed, and whole also can not very heavy.

Preferably, the two sides of the upper side of the portion of the auxiliary member 40 extending out of the armrest 2 are respectively provided with an arc surface 400, so as not to interfere with the rotating synchronous member 3 when the armrest assembly 100 is retracted.

Because the above synchronizing pieces 3 are arranged, in the process of folding the crib, the connecting seat 1 moves downwards, and meanwhile, the other sides of the two synchronizing pieces 3 are relatively connected to move downwards and relatively rotate, because the other sides of the two synchronizing pieces 3 are coaxially pivoted with the connecting seat 1, the rotating shafts on the other sides of the two synchronizing pieces 3 are pivoted to move downwards along the synchronizing long holes 13 of the connecting seat 1, the other sides of the two synchronizing pieces 3 synchronously move downwards along with the rotating shafts relative to the connecting seat 1 and relatively rotate, namely, the other sides of the two synchronizing pieces 3 synchronously rotate, so that one side, connected with the armrests 2, of the two synchronizing pieces 3 naturally synchronously pull the two armrests 2, and the two armrests 2 of each armrest group 100 can be guaranteed to synchronously rotate relative to the connecting seat 1, so that the two side brackets 201 are pulled to synchronously move relatively close. And because the other side of the two synchronous pieces 3 is pivoted with the middle part of the connecting seat 1 in the length direction through the same rotating shaft and can move up and down relative to the connecting seat 1, the synchronous rotating movement of the two armrests relative to the connecting seat is further ensured.

Similarly, in the unfolding process of the crib, the other sides of the two synchronizing members 3 move upwards and rotate relative to the connecting seat 1 along with the rotating shaft connected with the synchronizing members, so that one sides of the two synchronizing members 3 connected with the armrests 2 also naturally and synchronously pull the two armrests 2 to rotate, and further, in the unfolding process of the crib 200, the two armrests 2 also synchronously rotate relative to the connecting seat 1, so that the two side brackets 201 are pushed to move relatively far away in a comparably manner until the crib 200 is in the unfolded state.

Because the armrest set 100 adopts the above-mentioned arrangement of the synchronizing piece 3, both when the crib 200 is folded and when the crib 200 is unfolded can be further ensured to synchronously rotate and move relative to the connecting seat 1, thereby further avoiding the situation that the two side brackets 201 move out of synchronization due to the fact that the two armrests 2 of the armrest set 100 rotate out of synchronization in the folding process of the traditional crib 200, further avoiding the situation that the two side brackets 201 incline due to the situation, and further ensuring that the folding/unfolding operation of the crib 200 is simpler and more convenient.

Preferably, the lower sides of the two side walls 11 of the connecting seat 1 are respectively provided with a guide hole 112 extending up and down, correspondingly, two sides of the unlocking piece 61 are respectively provided with a guide piece 614 protruding outwards and capable of being matched with the guide holes 112, and when the unlocking piece 61 moves up and down relative to the connecting seat 1, the guide piece 614 moves up and down along the guide holes 112. By this arrangement, the unlocking member 61 can move up and down more smoothly relative to the connecting seat 1 without being deviated, so that the synchronous unlocking of the left and right second locking members 51 can be further ensured, and the synchronous rotation of the two armrests 2 of the armrest group 100 relative to the connecting seat 1 can be further ensured. In this embodiment, the guide holes 112 of the two side walls 11 of the connection seat 1 are opened downward, and the upper side of the guide 614 is located in the lower side of the guide holes 112 when the armrest assembly 100 is in the unfolded state.

In this embodiment, each side bracket 201 of the crib 200 of the present utility model includes two upright posts 202 and one armrest set 100, two sides of the one armrest set 2 away from each other are respectively pivoted to the upper sides of the two upright posts 202, and two sides of the armrest set 100 connected to the two side brackets 201 away from each other are respectively pivoted to the upper sides of the upright posts 202 on opposite sides of the two side brackets 201. That is, the crib 200 includes four upright posts 202 and four armrest sets 100, wherein two sides of each armrest set 100 away from each other are respectively pivoted to two adjacent upright posts 202. Therefore, in addition to the folding of the armrests 2 operatively connected to the side brackets 201, the folding of the armrests 2 on the side brackets 201 is also operated, and in the same manner, the two armrests 2 of the armrest group 100 of the side brackets 201 can also be rotated synchronously with respect to the connecting base 1, so that the two uprights 202 of the side brackets 201 can also be moved synchronously in this direction without tilting. After folding, the posts 202 of the side brackets 201 are also relatively close together (as shown in fig. 10), in addition to the side brackets 201 being relatively close together. Similarly, the same operation is performed on the armrest group 100 of the two side brackets 201 to extend the crib 200, and the two upright posts 202 of each side bracket 201 can be ensured to extend in the direction.

In the direction indication of the front, rear, left, right, up and down, the direction in which the two armrests 2 of the armrest group are located is left and right, the side walls 11 of the connecting seat are located front and rear, the armrests 2 are located up, and the unlocking piece 61 is located down. It will be appreciated by those skilled in the art that the above orientation indication is based on the orientation or positional relationship shown in the drawings, for convenience of description and simplicity of description only, and is not intended to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model, and that the relative orientation changes when the viewing angle changes.

Claims (22)

1. The utility model provides a novel crib, its includes left and right sides support and two handrail groups, each handrail group all includes connecting seat and two handrails, the opposite side of two handrails pin joint respectively in the both sides of connecting seat, the one side that two handrails kept away from mutually respectively with the upside pin joint of both sides support one side, its characterized in that: a first locking mechanism for limiting the relative rotation of the handrail and the corresponding side bracket is arranged between the handrail and the corresponding side bracket; each armrest group further comprises two linkage devices, one sides of the two linkage devices are respectively pivoted to two sides of the connecting seat, one side, away from each other, of each linkage device is respectively connected with the first locking mechanism on the corresponding side, and the linkage devices are also movably connected with the armrests; the connecting seat is moved downwards, and the linkage device can be driven to move so as to link the first locking mechanism to unlock.

2. The novel crib of claim 1, wherein: the first locking mechanism comprises a first locking piece connected with the handrail and capable of moving along the length direction of the handrail, and a locking part which is arranged on the side bracket and can be matched with the first locking piece; when the locking part is matched with the locking part, the first locking mechanism is in a locking state; the first locking piece moves towards the direction of the connecting seat and is separated from the locking part, and the first locking mechanism is unlocked.

3. The novel crib of claim 2, wherein: the locking part is provided with a locking groove, and the locking groove is opened towards the direction of the connecting seat.

4. The novel crib of claim 2, wherein: each linkage device comprises a first linkage piece, a first elastic piece, a second linkage piece and a third linkage piece, wherein the first elastic piece, the second linkage piece and the third linkage piece are connected in the handrail and can move along the length direction of the handrail; one side of each first linkage piece is pivoted to two sides of the connecting seat, and the other side of each first linkage piece is pivoted with the corresponding second linkage piece; one side of the third linkage piece far away from the connecting seat is connected with the first locking piece, and the first elastic piece is arranged between one side of the third linkage piece facing the connecting seat and the second linkage piece.

5. A novel crib according to claim 3, wherein: each linkage device comprises a first linkage piece, a first elastic piece, a second linkage piece and a third linkage piece, wherein the first elastic piece, the second linkage piece and the third linkage piece are connected in the handrail and can move along the length direction of the handrail; one side of each first linkage piece is pivoted to two sides of the connecting seat, and the other side of each first linkage piece is pivoted with the corresponding second linkage piece; one side of the third linkage piece far away from the connecting seat is connected with the first locking piece, and the first elastic piece is arranged between one side of the third linkage piece facing the connecting seat and the second linkage piece.

6. The novel crib of claim 4 or 5, wherein: the handrail pipe wall is provided with a third long perforation extending along the length direction of the handrail, one side of the first linkage piece, which is far away from the connecting seat, is provided with a connecting hole with the second linkage piece, and a first connecting piece passes through the connecting hole on the first linkage piece, the third long perforation on the handrail pipe wall and the connecting hole on the second linkage piece.

7. The novel crib of claim 4, wherein: a first notch which is downwards opened is formed in one side, away from the connecting seat, of the second linkage piece, a second notch which is upwards opened is formed in one side, facing the connecting seat, of the third linkage piece, the wall part, far away from one side of the connecting seat, of the first notch is positioned in the second notch, and the wall part, facing one side of the connecting seat, of the second notch is positioned in the first notch; one end of the first elastic piece is connected with the wall part of one side, far away from the connecting seat, of the first notch, and the other end of the first elastic piece is connected with the wall part of one side, facing the connecting seat, of the second notch.

8. The novel crib of claim 5, wherein: a first notch which is downwards opened is formed in one side, away from the connecting seat, of the second linkage piece, a second notch which is upwards opened is formed in one side, facing the connecting seat, of the third linkage piece, the wall part, far away from one side of the connecting seat, of the first notch is positioned in the second notch, and the wall part, facing one side of the connecting seat, of the second notch is positioned in the first notch; one end of the first elastic piece is connected with the wall part of one side, far away from the connecting seat, of the first notch, and the other end of the first elastic piece is connected with the wall part of one side, facing the connecting seat, of the second notch.

9. The novel crib of claim 4 or 5, 7 or 8, wherein: the first linkage piece comprises a first part and a second part which extends upwards from one side, far away from the connecting seat, of the first part, one side of the first part is pivoted with the connecting seat, and one side, far away from the first part, of the second part is pivoted with the second linkage piece.

10. The novel crib of any one of claims 2 to 5, 7 to 8, wherein: the side of the handrail, which is far away from the connecting seat, is fixedly connected with an assembling seat, the assembling seat is pivoted on the side bracket, and a first long through hole for the first locking piece to pass through is formed in the side wall of the assembling seat, which faces to one side of the side bracket.

11. The novel crib of claim 10, wherein: the handrail pipe wall is provided with a second long through hole at a position corresponding to the first long through hole, and one side of the first locking piece sequentially penetrates out of the second long through hole and the first long through hole.

12. The novel crib of claim 9, wherein: the side of the handrail, which is far away from the connecting seat, is fixedly connected with an assembling seat, the assembling seat is pivoted on the side bracket, and a first long through hole for the first locking piece to pass through is formed in the side wall of the assembling seat, which faces to one side of the side bracket.

13. The novel crib of claim 12, wherein: the handrail pipe wall is provided with a second long through hole at a position corresponding to the first long through hole, and one side of the first locking piece sequentially penetrates out of the second long through hole and the first long through hole.

14. The novel crib of claim 10, wherein: the two sides of the armrest group can also move up and down relative to the two side brackets, the two side brackets are respectively provided with a moving part which can move up and down relative to the two side brackets at corresponding positions, the assembly seat is pivoted with the moving part, and the locking part is arranged on the assembly seat.

15. The novel crib of claim 14, wherein: a third locking mechanism used for limiting the relative movement of the moving piece and the side bracket is arranged between the moving piece and the side bracket, and an unlocking device used for unlocking the third locking mechanism is arranged on the assembly seat.

16. The novel crib of any one of claims 11 to 13, wherein: the two sides of the armrest group can also move up and down relative to the two side brackets, the two side brackets are respectively provided with a moving part which can move up and down relative to the two side brackets at corresponding positions, the assembly seat is pivoted with the moving part, and the locking part is arranged on the assembly seat.

17. The novel crib of claim 16, wherein: a third locking mechanism used for limiting the relative movement of the moving piece and the side bracket is arranged between the moving piece and the side bracket, and an unlocking device used for unlocking the third locking mechanism is arranged on the assembly seat.

18. The novel crib of any one of claims 1 to 5, 7 to 8, 11 to 15, 17, wherein: and a second locking mechanism for limiting the relative rotation of the handrail and the connecting seat is arranged between each handrail and the connecting seat.

19. The novel crib of claim 18, wherein: one side of each armrest facing the connecting seat is relatively and fixedly connected with a matching piece, and the matching piece is at least partially positioned in the connecting seat; the second locking mechanism is arranged between the matching piece and the connecting seat.

20. The novel crib of claim 19, wherein: the second locking mechanism comprises a second locking piece, a tension spring and a matching hole arranged on the matching piece, and the second locking piece penetrates through the matching hole and can be connected with the connecting seat in a relatively up-and-down moving manner; the cooperation hole includes arc stroke section and certainly stroke section downside downwardly extending's locking section, the extension spring downside is connected with the connecting seat, and the upside is connected with the second locking piece, when the handrail group is in under the state of expanding, under the effect of extension spring, the locking section in cooperation piece cooperation hole is worn to locate by the second locking piece.

21. The novel crib of claim 20, wherein: the armrest set further comprises an unlocking piece, a second elastic piece and a second locking piece, wherein the upper side of the unlocking piece is connected in the lower side of the connecting seat in a relatively up-down moving mode, the second elastic piece is arranged between the unlocking piece and the connecting seat and can drive the unlocking piece to move downwards, and the lower side of the second locking piece is located above the unlocking piece when the armrest set is in an unfolding state.

22. The novel crib of claim 20 or 21, wherein: the second locking piece is arranged as a square piece, and the locking section of the matching hole is also arranged as a square.