CN213524625U - Baby crib - Google Patents

Abstract

The utility model discloses a baby crib, which comprises a front surrounding frame component, a middle surrounding frame component, a rear surrounding frame component and a cloth cover sleeved on the front surrounding frame component, the middle surrounding frame component and the rear surrounding frame component, wherein the front surrounding frame component and the rear surrounding frame component are rotationally connected with the middle surrounding frame component, when the crib is in an unfolded state, the front surrounding frame component and the rear surrounding frame component are respectively supported on the front side and the rear side of the middle surrounding frame component, the crib forms a frame-shaped structure which is closed front and back, when the crib is in a folded state, the front enclosing frame assembly and the rear enclosing frame assembly rotate to close the middle enclosing frame assembly, one of the three parts of the front enclosing frame assembly, the middle enclosing frame assembly and the rear enclosing frame assembly is contained in the inner side of the second part, the second part is contained in the inner side of the third part, and the crib further comprises a locking mechanism which locks the front enclosing frame assembly and the rear enclosing frame assembly with the middle enclosing frame assembly respectively. The folding crib has compact structure, small volume and convenient carrying and storage.

Description

Baby crib

Technical Field

The utility model relates to a children article technical field, concretely relates to crib.

Background

In order to facilitate the care of infants, beds in beds are increasingly used, so that on one hand, adults can conveniently care for infants at night, and on the other hand, the situation that infants are pressed carelessly when being placed on a large bed alone can be prevented. In order to facilitate carrying and storage of the bed in the bed, the bed in the bed can be folded generally. However, the folding structure of the bed-in-bed in the prior art is still large in size and inconvenient to carry and store.

Disclosure of Invention

The utility model aims at providing an improved crib aiming at the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a crib, has expansion and fold condition, the crib includes preceding frame subassembly, middle frame subassembly, back frame subassembly and cover establishes in preceding frame subassembly, middle frame subassembly with the cloth cover on the frame subassembly after, preceding frame subassembly includes the preceding bed board that is located the bottom, is located preceding railing and both ends of preceding bed board top are fixed respectively and are set up in preceding bed board with a plurality of preceding vaulting poles on preceding railing, back frame subassembly includes the back bed board that is located the bottom, is located back railing and both ends of back bed board top are fixed respectively and are set up in back bed board and a plurality of back vaulting poles on the back railing, middle frame subassembly includes the middle bed board that is located the bottom and the side wall board of fixed setting respectively in the left and right sides of middle bed board, the side wall board upwards extend from the junction with middle bed board, the utility model discloses a baby crib, including front bed board, back bed board, front enclosing frame assembly, back enclosing frame assembly, baby crib, back enclosing frame assembly, middle bed board and side bounding wall, the rear portion of front bed board with middle bed board or the front portion of side bounding wall rotates mutually to be connected, works as when the baby crib is in the expansion state, front enclosing frame assembly with back enclosing frame assembly props respectively and stands up both sides around middle enclosing frame assembly, the baby crib forms closed frame type structure around the back, works as when the baby crib is in fold condition, front enclosing frame assembly with back enclosing frame assembly homogeneous phase is right middle enclosing frame assembly rotates and draws close, front enclosing frame assembly with one of the three parts of back enclosing frame assembly is acceptd in the inboard of second part, and the second part is acceptd in the inboard of third part, the baby crib still including being used for with front enclosing frame assembly with middle enclosing frame assembly and back enclosing frame assembly with the position locking of middle enclosing frame assembly is in the expansion state down The locking mechanism of (1).

Preferably, when the baby crib is in a folded state, the rear surrounding frame assembly is accommodated inside the middle surrounding frame assembly, and the middle surrounding frame assembly is accommodated inside the front surrounding frame assembly.

Further, when the crib is in the expansion state, preceding bed board middle bed board with back bed board is from preceding backward order setting in proper order, preceding bed board middle bed board with the upper surface of back bed board is located the coplanar, preceding enclose the railing side bounding wall with back railing sets up from preceding backward order, works as when the crib is in fold condition, preceding bed board with back bed board looks parallel arrangement, its all perpendicular to middle bed board, back bed board with back railing all accepts in the left and right sides between the side bounding wall, preceding bed board is located the place ahead of side bounding wall, the left and right sides the side bounding wall reaches back bounding wall subassembly all is located the inboard of preceding railing.

Preferably, the crib further comprises a front driving mechanism for driving the front frame assembly to rotate relative to the middle frame assembly when the crib is folded and unfolded, the front driving mechanism comprises a front connecting rod, one end of the front connecting rod is rotatably connected with the front frame assembly, the other end of the front connecting rod is rotatably and slidably arranged on the middle frame assembly, the crib further comprises a rear driving mechanism for driving the rear frame assembly to rotate relative to the middle frame assembly when the crib is folded and unfolded, the rear driving mechanism comprises a rear connecting rod, one end of the rear connecting rod is rotatably connected with the rear frame assembly, and the other end of the rear connecting rod is rotatably and slidably arranged on the middle frame assembly.

Preferably, the crib further comprises a front driving mechanism for driving the front frame assembly to rotate relative to the middle frame assembly and a rear driving mechanism for driving the rear frame assembly to rotate relative to the middle frame assembly when the crib is folded and unfolded, the front driving mechanism comprises a front connecting rod, one end of the front connecting rod is rotatably connected with the front frame assembly, the rear driving mechanism comprises a rear connecting rod, one end of the rear connecting rod is rotatably connected with the rear frame assembly, the other end of the front connecting rod, the other end of the rear connecting rod and the middle frame assembly are rotatably connected through the same shaft of a rotating shaft, and the rotating shaft is slidably arranged on the middle frame assembly.

Further, be provided with the spout that extends along upper and lower direction on the middle frame subassembly that encloses, the pivot is located in the spout and can follow the length extending direction of spout sets up with sliding, works as when the crib is in the expanded state, the pivot be located in the spout the lower tip of spout, works as when the crib is in fold condition, the pivot be located in the spout the upper end of spout.

Further, the locking mechanism comprises a locking piece which can be arranged on the middle surrounding frame assembly in a sliding mode, the locking piece can be matched with or separated from the rotating shaft, when the locking mechanism is in a locking state, the locking piece is matched with the rotating shaft and is blocked on the sliding path of the rotating shaft, and when the locking mechanism is in an unlocking state, the locking piece is separated from the rotating shaft and is far away from the sliding path of the rotating shaft.

Furthermore, the crib further comprises an unlocking mechanism used for driving the locking mechanism to be unlocked, the unlocking mechanism comprises an unlocking button and a flexible connecting piece which are movably arranged on the front wall frame assembly, two end parts of the flexible connecting piece are respectively and fixedly arranged on the locking piece and the unlocking button, the locking mechanism is respectively arranged on the left side and the right side of the crib, and the locking pieces on the left side and the right side are connected with the unlocking button through the flexible connecting piece.

Preferably, the front surrounding frame assembly, the middle surrounding frame assembly, the rear surrounding frame assembly and the middle surrounding frame assembly are locked in the unfolded state through the same locking mechanism, and after the locking mechanism is unlocked, the front surrounding frame assembly and the rear surrounding frame assembly synchronously rotate relative to the middle surrounding frame assembly to be close to each other.

Preferably, the crib further comprises a support assembly supported at the bottom of the whole formed by the front enclosure frame assembly, the middle enclosure frame assembly and the rear enclosure frame assembly, the support assembly is detachably connected with the middle enclosure frame assembly, and the support assembly has an unfolded state and a folded state.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a crib simple structure, by the preceding frame subassembly that encloses that sets up in front and back order, the frame subassembly is enclosed to the centre and the frame subassembly triplex is enclosed after, after the crib is folding, preceding frame subassembly that encloses, the centre encloses a part among frame subassembly and the back three part and accepts the inboard at the second part, the inboard at the third part is acceptd to the second part, thereby make the crib form the structure of establishing layer upon layer cover, compact structure after this crib is folding like this, the volume is less, and convenient to carry and deposit.

Drawings

Fig. 1 is a perspective view of the crib of the present invention in an expanded state (the crib is in a first use state);

fig. 2 is a side view of the infant bed of the present invention in an unfolded state (the infant bed is in a first use state);

fig. 3 is a top view of the baby crib of the present invention in an unfolded state (the baby crib is in a first use state);

fig. 4 is a partial sectional view of the crib of the present invention in an expanded state (the crib is in a first use state);

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a perspective view of the crib of the present invention during the folding process of the fence panel (the crib is in a first use state);

fig. 7 is a side view of the crib of the present invention during the folding of the fence panel (the crib is in a first use state);

fig. 8 is a perspective view of the crib of the present invention in a folded state (the crib is in a first usage state);

fig. 9 is a side view of the baby crib of the present invention in a folded state (the baby crib is in a first usage state);

fig. 10 is a perspective view of the infant bed of the present invention in an expanded state (the infant bed is in a second use state);

fig. 11 is a perspective view of the baby crib of the present invention in a folded state (the baby crib is in a second usage state).

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

As shown in figures 1-11, the utility model discloses a crib has expansion and fold condition, and this crib includes preceding frame subassembly 1, middle frame subassembly 2 and the back frame subassembly 3 of enclosing.

Preceding frame subassembly 1 encloses railing 12 and both ends respectively fixed setting before bed board 11 and preceding a plurality of preceding vaulting poles 13 on enclosing railing 12 including being located preceding bed board 11 of bottom, being located preceding bed board 11 top, a plurality of preceding vaulting poles 13 along the length extending direction interval setting of preceding railing 12. In this embodiment, the front wall rail 12 is a U-shaped rod.

The middle surrounding frame assembly 2 comprises a middle bed board 21 positioned at the bottom and side surrounding boards 22 fixedly arranged at the left side and the right side of the middle bed board 21 respectively, and the side surrounding boards 22 extend upwards from the connecting part of the middle bed board 21.

The rear enclosure frame assembly 3 comprises a rear bed board 31 located at the bottom, a rear enclosure rail 32 located above the rear bed board 31 and a plurality of rear support rods 33 fixedly arranged on the rear bed board 31 and the rear enclosure rail 32 at two ends respectively, and the plurality of rear support rods 33 are sequentially arranged at intervals along the length extending direction of the rear enclosure rail 32. In this embodiment, the rear rail 32 is a U-shaped bar.

The front surrounding frame assembly 1 and the rear surrounding frame assembly 3 are rotatably connected with the middle surrounding frame assembly 2, specifically, the rear part of the front bed plate 11 is rotatably connected with the front part of the middle bed plate 21 or the front part of the side wall plate 22, and the front part of the rear bed plate 31 is rotatably connected with the rear part of the middle bed plate 21 or the rear part of the side wall plate 22. Thus, the front frame assembly 1 and the rear frame assembly 3 can rotate relative to the middle frame assembly 2 to fold or unfold the baby crib. Further, one of the three components of the folded front surrounding frame assembly 1, the intermediate surrounding frame assembly 2 and the rear surrounding frame assembly 3 may be housed inside the second component, and the second component may be housed inside the third component. Therefore, the folded baby crib is more compact in structure and smaller in size.

In this embodiment, the rotating shaft of the front bed board 11 rotatably connected with the middle bed board 21 or the side coaming 22 is located in front of the front end surface of the side coaming 22, and the rotating shaft of the rear bed board 31 rotatably connected with the middle bed board 21 or the side coaming 22 is located in front of the rear end surface of the side coaming 22. Further, the distance between the side gusset panels 22 on the left and right sides is smaller than the distance between the left and right sides of the rear end portion of the front balustrade 12, and the distance between the side gusset panels 22 on the left and right sides is larger than the distance between the left and right sides of the front end portion of the rear balustrade 32. Thus, when the baby bed is folded, the rear surrounding frame unit 3 is accommodated inside the middle surrounding frame unit 2, and the middle surrounding frame unit 2 is accommodated inside the front surrounding frame unit 1.

The crib also comprises a front driving mechanism for driving the front surrounding frame assembly 1 to rotate relative to the middle surrounding frame assembly 2 when the crib is folded and unfolded. Specifically, the front drive mechanism includes a front link 4, one end of the front link 4 is rotatably connected to the front frame assembly 1, and the other end of the front link 4 is rotatably and slidably disposed on the middle frame assembly 2. Thus, when the other end of the front link 4 slides relative to the middle surrounding frame assembly 2, the front link 4 rotates relative to the middle surrounding frame assembly 2 at the same time, and the front surrounding frame assembly 1 can be driven to rotate relative to the middle surrounding frame assembly 2 through the front link 4, so that the baby crib can be folded or unfolded.

The front driving mechanisms are respectively arranged at the left side and the right side of the crib, in the embodiment, the front enclosure frame assembly 1 further comprises front connecting pieces 14 fixedly arranged at the left side and the right side of the rear part of the front bed board 11, one end part of each front connecting rod 4 is rotatably connected with the front connecting piece 14 at the corresponding side, and the other end part of each front connecting rod 4 is rotatably and slidably arranged on the side wall board 22 at the corresponding side.

In this embodiment, the side wall plate 22 is provided with a first receiving groove 221, the first receiving groove 221 is recessed from the outer surface of the side wall plate 22 to the side wall plate 22, and the front link 4 is partially located in the first receiving groove 221. The outer side surface of the front connecting rod 4 is flush with the outer surface of the side coaming 22 or slightly protrudes from the outer surface of the side coaming 22. The baby crib is compact in structure and neat and attractive in appearance due to the arrangement.

The crib also includes a rear drive mechanism for driving the rotation of the rear enclosure assembly 3 relative to the intermediate enclosure assembly 2 as the crib is folded and unfolded. Specifically, the rear driving mechanism includes a rear link 5, one end of the rear link 5 is rotatably connected to the rear enclosure frame assembly 3, and the other end of the rear link 5 is rotatably and slidably disposed on the intermediate enclosure frame assembly 2. Thus, when the other end of the rear connecting rod 5 slides relative to the middle surrounding frame assembly 2, the rear connecting rod 5 rotates relative to the middle surrounding frame assembly 2, and the rear surrounding frame assembly 3 can be driven by the rear connecting rod 5 to rotate relative to the middle surrounding frame assembly 2, so that the baby crib can be folded or unfolded.

The rear driving mechanisms are respectively arranged at the left side and the right side of the crib, in this embodiment, the rear surrounding frame assembly 3 further comprises rear connecting pieces 34 fixedly arranged at the left side and the right side of the front part of the rear bed board 31, one end part of the rear connecting rod 5 at each side is rotatably connected with the rear connecting piece 34 at the corresponding side, and the other end part of the rear connecting rod 5 is rotatably and slidably arranged on the side surrounding board 22 at the corresponding side.

In this embodiment, the side wall 22 is further provided with a second receiving groove 222, the second receiving groove 222 is recessed from the inner surface of the side wall 22 to the side wall 22, and the rear connecting rod 5 is partially located in the second receiving groove 222. The inner side surface of the rear connecting rod 5 is flush with the inner surface of the side gusset 22, or the inner surface of the side gusset 22 slightly protrudes from the inner side surface of the rear connecting rod 5. The baby crib is compact in structure and neat and attractive in appearance due to the arrangement, and the rear connecting rod 5 cannot influence a baby in the baby crib.

In the present embodiment, the other end of the front link 4, the other end of the rear link 5, and the side wall 22 are connected to each other by the rotating shaft 6 in a rotatable manner, and the rotating shaft 6 is slidably provided on the side wall 22. Like this, as long as make 6 opposite side bounding walls 22 of pivot slide, can make preceding connecting rod 4 and back connecting rod 5 homogeneous phase rotate to the side bounding wall 22, thereby it rotates to drive preceding frame subassembly 1 and the relative centre of back frame subassembly 3 and enclose frame subassembly 2 simultaneously, make the crib fold or expand, this kind of setting up mode, need not to operate preceding actuating mechanism and rear drive mechanism respectively, can make preceding frame subassembly 1 and the relative centre of back frame subassembly 3 simultaneously and enclose frame subassembly 2 and rotate, make the crib fold or expand, thereby make the folding of crib and expand the operation all very convenient.

The side wall 22 is provided with a slide groove 223 extending in the vertical direction, and the rotating shaft 6 is located in the slide groove 223 and slidably provided in the longitudinal extending direction of the slide groove 223. The hinge 6 is positioned at the lower end 221 of the slide groove 223 in the slide groove 223 when the infant bed is in the unfolded state, and the hinge 6 is positioned at the upper end of the slide groove 223 in the slide groove 223 when the infant bed is in the folded state.

The crib also includes a locking mechanism for locking the crib in the deployed condition. In this application, in each side of the left and right sides of crib, can enclose frame subassembly 1 and middle before and enclose frame subassembly 2 and enclose frame subassembly 3 and middle relative position locking under the expansion state after and enclose frame subassembly 2 through a locking mechanical system, make the simple structure of crib like this, unblock convenient operation makes things convenient for the use of crib.

Specifically, the locking mechanism includes a locking piece 71 slidably provided on the side fence 22, and the locking piece 71 can be engaged with or disengaged from the rotating shaft 6. When the locking mechanism is in a locking state, the locking piece 71 is matched with the rotating shaft 6 and blocked on the sliding path of the rotating shaft 6, so that the rotating shaft 6 cannot slide relative to the side enclosing plate 22, and the front connecting rod 4 and the rear connecting rod 5 cannot rotate relative to the middle enclosing frame assembly 2; when the lock mechanism is in the unlocked state, the engagement between the lock member 71 and the rotating shaft 6 is released, and the lock member 71 is moved away from the sliding path of the rotating shaft 6, so that the rotating shaft 6 can slide relative to the side gusset 22, thereby allowing the front link 4, the rear link 5, the front and rear gusset assemblies 1 and 3 to rotate relative to the intermediate gusset assembly 2.

The locking mechanism further comprises an elastic member 72 for urging the locking member 71 to slide relative to the side fence 22 so as to restore the locking mechanism from the unlocked state to the locked state, and in this embodiment, the elastic member 72 is a spring, and both ends of the spring are respectively abutted against the locking member 71 and the side fence 22.

The crib further comprises an unlocking mechanism for driving the locking mechanism to unlock, the unlocking mechanism comprises an unlocking button 81 and a flexible connecting piece 82, the unlocking button 81 and the flexible connecting piece 82 are movably arranged on the front surrounding frame assembly 1, two end parts of the flexible connecting piece 82 are fixedly arranged on the locking piece 71 and the unlocking button 81 respectively, and the flexible connecting piece 82 can adopt a traction rope. When the locking mechanism is in a locked state and the unlocking button 81 is operated to slide relative to the front surrounding frame assembly 1, the pulling cable can be pulled, the pulling cable pulls the locking piece 71 to slide along a set path relative to the side enclosing plate 22, so that the locking piece 71 is disengaged from the rotating shaft 6 and is far away from the sliding path of the rotating shaft 6, the locking mechanism is unlocked, and the rotating shaft 6 can slide relative to the side enclosing plate 22, so that the front surrounding frame assembly 1 and the rear surrounding frame assembly 3 can rotate relative to the middle surrounding frame assembly 2.

In this embodiment, the locking mechanisms are respectively provided on the left and right sides of the crib, and the locking pieces 71 on the left and right sides are connected to the unlocking button 81 through the flexible connecting member 82.

The crib also comprises cloth sleeves sleeved on the front surrounding frame assembly 1, the middle surrounding frame assembly 2 and the rear surrounding frame assembly 3.

When the crib is in an unfolded state, the front bed plate 11, the middle bed plate 21 and the rear bed plate 31 are sequentially arranged from front to back, and the upper surfaces of the front bed plate 11, the middle bed plate 21 and the rear bed plate 31 are positioned in the same plane; enclose railing 12, side wall board 22, back railing 32 from preceding backward in proper order and set up, preceding railing 12 is the opening U type structure backward, and back railing 32 is the opening U type structure forward, and closed frame type structure around whole crib is, as shown in fig. 1~ 4. In this state, the rotation shaft 6 is positioned at the lower end portion of the slide groove 223 in the slide groove 223.

When the crib is folded, the unlocking button 81 is operated to slide relative to the front enclosing frame assembly 1, the locking piece 71 is pulled by the traction cable to slide relative to the side enclosing plate 22, so that the locking mechanism is disengaged from the matching between the rotating shafts 6 and is far away from the sliding path of the rotating shafts 6, and the locking mechanism is unlocked; make pivot 6 upwards slide along the length extending direction of spout 223, can make preceding connecting rod 4 and back connecting rod 5 homogeneous phase curb plate 22 rotate, enclose frame subassembly 1 upwards and overturn backward and enclose frame subassembly 2 with the centre and draw close together before preceding connecting rod 4 pulling simultaneously, enclose frame subassembly 3 upwards and overturn forward and enclose frame subassembly 2 with the centre and draw close together after back connecting rod 5 pulling simultaneously, enclose frame subassembly 1 and enclose frame subassembly 3 simultaneously and enclose frame subassembly 2 rotation and draw close relatively in the centre promptly before enclosing frame subassembly 1 and after, as shown in fig. 6 and 7.

When the crib is in a folded state, the rear surrounding frame assembly 3 is integrally accommodated between the side wall plates 22 on the left and right sides, the front bed plate 21 is located in front of the side wall plates 22, the side wall plates 22 on the left and right sides and the rear surrounding frame assembly 3 are both accommodated in the inner side of the front surrounding frame assembly 1, the open ends of the U-shaped structures of the front surrounding rail 12 and the rear surrounding rail 32 face downwards, the front bed plate 11 and the rear bed plate 31 are arranged in parallel, and the two are perpendicular to the middle bed plate 21, as shown in fig. 8 and 9. The whole crib is approximately flat, and the length of the crib in the front-back direction is approximately the length of the side wall plate 22 in the front-back direction, so that the size of the folded crib is small, and the crib is convenient to carry and store.

The crib may also include a bracket assembly supported on the bottom of the unit formed by the front frame assembly 1, the middle frame assembly 2 and the rear frame assembly 3, the bracket assembly being detachably connected to the side panels 22. Thus, the baby crib has a first use state and a second use state, when the baby crib is in the first use state, the baby crib is not provided with a bracket assembly, and the whole formed by the front surrounding frame assembly 1, the middle surrounding frame assembly 2 and the rear surrounding frame assembly 3 is independently placed on a large bed to be used as a bed-in-bed, so that the division of a baby area when a baby and a parent sleep in the same bed is realized, and the baby is effectively protected, as shown in fig. 1 to 3; when the crib is in the second use state, the whole formed by the front enclosing frame assembly 1, the middle enclosing frame assembly 2 and the rear enclosing frame assembly 3 of the crib is supported by the bracket assembly, the crib is used as a common crib, and can be carried for travel, and the bracket assembly also has an unfolding state and a folding state, so that the crib is convenient to carry, as shown in fig. 10 and 11.

The bracket assembly includes a universal bracket 91 and a bracket 92 removably mounted to the universal bracket 91, the bracket 92 being removably connected to the side gusset 22. The universal bracket 91 can be used for various types of cribs, and 92 is matched with the connecting part on the side wall plate 22 of the crib.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a crib, has expansion and fold condition, the crib encloses frame subassembly, middle frame subassembly, after including before enclosing the frame subassembly, encloses frame subassembly and cover to be established before enclosing the frame subassembly the middle frame subassembly with after enclose the cloth cover on the frame subassembly, its characterized in that: the front enclosing frame component comprises a front bed board positioned at the bottom, a front enclosing railing positioned above the front bed board and a plurality of front supporting rods of which the two ends are respectively and fixedly arranged on the front bed board and the front enclosing railing, the rear enclosing frame component comprises a rear bed board positioned at the bottom, a rear enclosing railing positioned above the rear bed board and a plurality of rear supporting rods of which the two ends are respectively and fixedly arranged on the rear bed board and the rear enclosing railing, the middle enclosing frame component comprises a middle bed board positioned at the bottom and side enclosing plates respectively and fixedly arranged at the left side and the right side of the middle bed board, the side enclosing plates extend upwards from the connection part with the middle bed board, the rear part of the front bed board is rotationally connected with the middle bed board or the front part of the side enclosing plates, the front part of the rear bed board is rotationally connected with the middle bed board or the rear part of the side, when the baby bed is in an unfolded state, the utility model discloses a baby crib, including enclosing frame subassembly, back and front enclosing frame subassembly, including the middle frame subassembly that encloses, the front and back both sides of enclosing frame subassembly enclose the frame type structure of frame subassembly after with after, the crib forms the front and back confined, works as when the crib is in fold condition, the front enclose frame subassembly with after enclose the frame subassembly homogeneous phase right in the middle enclose the frame subassembly and rotate and draw close together, the front enclose the frame subassembly in the middle enclose the frame subassembly with one of the three parts of back enclose the frame subassembly accept in the inboard of second part, the inboard of third part is acceptd to the second part, the crib still including be used for with the front enclose the frame subassembly with in the middle enclose the frame subassembly and after enclose the frame subassembly with the locking mechanical system of the position locking under the expansion state of frame subassembly in the middle.

2. The crib of claim 1, wherein: when the crib is in a folded state, the rear enclosing frame assembly is accommodated inside the middle enclosing frame assembly, and the middle enclosing frame assembly is accommodated inside the front enclosing frame assembly.

3. The crib of claim 2, wherein: when the crib is in the expansion state, preceding bed board middle bed board with back bed board sets gradually from the front backward, preceding bed board middle bed board with the upper surface of back bed board is located the coplanar, preceding enclose the railing side bounding wall with back railing sets gradually from the front backward, works as when the crib is in fold condition, preceding bed board with back bed board looks parallel arrangement, its all perpendicular to middle bed board, back bed board with back railing all accepts in the left and right sides between the side bounding wall, preceding bed board is located the place ahead of side bounding wall, the left and right sides the side bounding wall reaches back encloses the frame subassembly and all is located the inboard of preceding enclosing the railing.

4. The crib of claim 1, wherein: the baby crib further comprises a front driving mechanism which is used for driving the front enclosing frame assembly to rotate relative to the middle enclosing frame assembly when the baby crib is folded and unfolded, the front driving mechanism comprises a front connecting rod, one end part of the front connecting rod is rotationally connected with the front enclosing frame assembly, the other end part of the front connecting rod is rotatably and slidably arranged on the middle enclosing frame assembly, the baby crib further comprises a rear driving mechanism which is used for driving the rear enclosing frame assembly to rotate relative to the middle enclosing frame assembly when the baby crib is folded and unfolded, the rear driving mechanism comprises a rear connecting rod, one end part of the rear connecting rod is rotationally connected with the rear enclosing frame assembly, and the other end part of the rear connecting rod is rotatably and slidably arranged on the middle enclosing frame assembly.

5. The crib of claim 1, wherein: the baby crib further comprises a front driving mechanism and a rear driving mechanism, the front driving mechanism is used for driving the front enclosing frame assembly to rotate relative to the middle enclosing frame assembly when the baby crib is folded and unfolded, the rear driving mechanism is used for driving the rear enclosing frame assembly to rotate relative to the middle enclosing frame assembly, the front driving mechanism comprises a front connecting rod, one end portion of the front connecting rod is rotatably connected with the front enclosing frame assembly, the rear driving mechanism comprises a rear connecting rod, one end portion of the rear connecting rod is rotatably connected with the rear enclosing frame assembly, the other end portion of the front connecting rod, the other end of the rear connecting rod and the middle enclosing frame assembly are rotatably connected through the same shaft of a rotating shaft, and the rotating shaft can be slidably arranged on the middle enclosing frame assembly.

6. The crib of claim 5, wherein: the middle frame component is provided with a sliding groove extending along the upper direction and the lower direction, the rotating shaft is located in the sliding groove and can be arranged in a sliding mode along the length extending direction of the sliding groove, when the baby crib is in an unfolding state, the rotating shaft is located in the sliding groove at the lower end part of the sliding groove, and when the baby crib is in a folding state, the rotating shaft is located in the sliding groove at the upper end part of the sliding groove.

7. The crib of claim 5, wherein: the locking mechanism comprises a locking piece which can be arranged on the middle enclosing frame assembly in a sliding mode, the locking piece can be matched with or separated from the rotating shaft, when the locking mechanism is in a locking state, the locking piece is matched with the rotating shaft and is blocked on the sliding path of the rotating shaft, and when the locking mechanism is in an unlocking state, the locking piece is separated from the rotating shaft in a matching mode and is far away from the sliding path of the rotating shaft.

8. The crib of claim 7, wherein: the crib still includes and is used for ordering about the release mechanism of locking mechanical system unblock, release mechanism is including the activity sets up release button and flexible connectors on the preceding bounding frame subassembly, flexible connectors's both ends are fixed the setting respectively the locking piece with on the release button, locking mechanism sets up respectively the left and right sides of crib, the left and right sides the locking piece all pass through flexible connectors with release button connects.

9. The crib of claim 1, wherein: in each side of the left side and the right side of the crib, the position locking of the front enclosing frame assembly, the middle enclosing frame assembly, the rear enclosing frame assembly and the middle enclosing frame assembly is in an unfolding state through the same locking mechanism, and after the locking mechanism is unlocked, the front enclosing frame assembly and the rear enclosing frame assembly are synchronously opposite to each other and the middle enclosing frame assembly rotates to be close to each other.

10. The crib of claim 1, wherein: the crib still includes to support and is in preceding frame subassembly, middle frame subassembly and the bracket component of the holistic bottom that the frame subassembly formed after, the bracket component with middle frame subassembly looks detachably connects, the bracket component has expansion and fold condition.

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