CN216089799U - Middle bed of crib - Google Patents

Abstract

The utility model discloses a middle bed of a baby crib, which comprises a base, a first lower enclosing pipe, a second lower enclosing pipe, a first upper enclosing pipe and a second upper enclosing pipe, a first folding piece, a second folding piece, a first sliding sleeve, a second sliding sleeve and a locking piece, wherein the first lower enclosing pipe, the second lower enclosing pipe, the first upper enclosing pipe and the second upper enclosing pipe are rotatably connected to the base; the lower end of the first folding piece is rotationally connected with the first lower enclosing pipe, the lower end of the second folding piece is rotationally connected with the second lower enclosing pipe, and the upper ends of the first folding piece and the second folding piece are rotationally connected through a connecting piece; the first sliding sleeve is sleeved on the first upper enclosing pipe in a sliding manner and is rotationally connected with the first folding piece, and the second sliding sleeve is sleeved on the second upper enclosing pipe in a sliding manner and is rotationally connected with the second folding piece; the lower end of the locking piece is rotationally connected to the base, and the upper end of the locking piece is provided with a locking hook with an opening at one side, and the locking hook is hooked on the connecting piece and is separated from the connecting piece when the locking piece rotates; the locking device is simple in overall structure, and locking and unlocking are all very convenient.

Description

Middle bed of crib

Technical Field

The utility model relates to the technical field of cribs, in particular to a middle crib.

Background

The traditional infant nursing mainly adopts a bed for the infant and parents to sleep together, and has the advantages of convenient nursing and convenient diaper changing. Under the common conditions, adults are fatigued when sleeping at night, the face of children is easily covered by quilts, or the limbs of adults press infants, so that the infants lack oxygen, and unsafe factors are brought.

In order to avoid the above problems, the crib has come to be transported. At present, cribs for use in a bed are also called "bed-in-bed" and are made foldable for easy carrying and storage. The Chinese utility model patent with the publication number of CN212088928U discloses a crib middle bed, which comprises an upper enclosing pipe, a lower enclosing pipe, a base, a support rod, a sliding sleeve and a linkage piece, wherein the upper enclosing pipe and the lower enclosing pipe are connected through the base, the support rod is vertically arranged on the base, the sliding sleeve is arranged on the support rod in a sliding way, the linkage piece is arranged on two sides of the sliding sleeve and is connected with the upper enclosing pipe and the lower enclosing pipe on the corresponding sides, and the upper enclosing pipe and the lower enclosing pipe are opened and folded by the sliding of the sliding sleeve on the support rod; however, although the above structure realizes folding of the bed in bed, since the folding and unfolding are realized by sliding the sliding sleeve, a complicated locking mechanism is required to lock the sliding sleeve when the bed in bed is unfolded, the structure is complicated, the cost is high, and the operation is troublesome when the bed in bed is folded.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the utility model aims to provide a crib middle bed with a simple structure.

The technical scheme adopted by the utility model is as follows:

a crib middle bed comprises a base, a first lower enclosing pipe, a second lower enclosing pipe, a first upper enclosing pipe and a second upper enclosing pipe, a first folding piece, a second folding piece, a first sliding sleeve, a second sliding sleeve and a locking piece, wherein the first lower enclosing pipe, the second lower enclosing pipe, the first upper enclosing pipe and the second upper enclosing pipe are rotatably connected to the base; the lower end of the first folding piece is rotationally connected with the first lower enclosing pipe, the lower end of the second folding piece is rotationally connected with the second lower enclosing pipe, and the upper ends of the first folding piece and the second folding piece are rotationally connected through a connecting piece; the first sliding sleeve is sleeved on the first upper enclosing pipe in a sliding manner and is rotationally connected with the first folding piece, and the second sliding sleeve is sleeved on the second upper enclosing pipe in a sliding manner and is rotationally connected with the second folding piece; the lower end of the locking piece is rotatably connected to the base, and the upper end of the locking piece is provided with a locking hook with an opening at one side, and the locking hook is hooked on the connecting piece and separated from the connecting piece when the locking piece rotates.

Further, still include and sway the pipe and sway the seat, it is the arc structure to sway the pipe, and its both ends are respectively through swaying the seat and corresponding first down the pillar or the second down the pillar can dismantle the connection.

Further, still include the carrying handle pipe, this carrying handle pipe is U type structure, and its open end rotates with the base that corresponds the side respectively and is connected.

Further, be equipped with first spread groove and second spread groove on the base, first spread groove and second spread groove are located the both sides of base respectively, the lower extreme of first surrounding pipe and first last surrounding pipe rotates respectively to be connected in first spread groove, the lower extreme of surrounding pipe rotates respectively to be connected in the second spread groove on surrounding pipe and the second under the second.

Further, the device also comprises a fixed seat which is fixed at the outer side of the base; a fixed hole is formed in the upper part of the base and positioned between the first connecting groove and the second connecting groove; a fixing column is eccentrically arranged on the inner side of the fixing seat and inserted into the fixing hole; the lower extreme of locking piece rotates to be connected on the fixed column, on the fixing base, and be located the both sides of fixed column and offer and supply locking piece pivoted rotation groove.

The portable carrying handle is characterized by further comprising a connecting seat, wherein the opening end of the carrying handle pipe is fixed on the connecting seat, and the connecting seat is rotatably connected with the fixing seat.

The device further comprises a limiting wheel and a return spring, wherein limiting bulges extending to the limiting wheel in the radial direction are arranged at intervals along the circumferential direction of the limiting wheel; the outer side of the fixed seat is provided with a first limiting groove, and first grooves matched with the limiting bulges are formed in the inner wall of the first limiting groove at intervals in the circumferential direction; a second limiting groove is formed in the inner side of the connecting seat, and second grooves matched with the limiting bulges are formed in the inner wall of the second limiting groove at intervals in the circumferential direction; a connecting column is arranged outside the fixed seat and in the first limiting groove and extends into the second limiting groove; the reset spring is sleeved on the connecting column, the limiting wheel is sleeved on the connecting column and matched in the first limiting groove and the second limiting groove under the action of the reset spring to be connected with the connecting seat and the fixing seat, and the limiting wheel moves along the connecting column to the direction of the first limiting groove under the action of external force to be separated from the connecting seat.

The key is arranged in the key slot; a key hole penetrating through the second limiting groove is formed in the circumferential direction of the key groove, a key part is arranged on the inner side of the key, and the key part is inserted into the key hole, is in contact with the limiting wheel and pushes the limiting wheel to move towards the first limiting groove under the action of external force so as to be separated from the connecting seat.

Further, the swing seat comprises a swing base and a swing fixing seat, the end portion of the swing pipe is fixed on the swing base, the swing fixing seat is fixed on a first lower surrounding pipe or a second lower surrounding pipe of the corresponding end, and the swing base is in buckling fit with the swing fixing seat.

Further, the swing base also comprises swing supporting feet which are fixed on the swing base.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a middle bed of a baby bed provided in an embodiment of the present application;

FIG. 2 is a partial exploded view of a crib according to an embodiment of the present application;

FIG. 3 is another partial exploded view of a crib according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a fixing base according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a connection seat according to an embodiment of the present application.

The first lower enclosing pipe 11, the second lower enclosing pipe 12, the base 2, the first folding part 31, the second folding part 32, the first sliding sleeve 33, the second sliding sleeve 34, the first upper enclosing pipe 41, the second upper enclosing pipe 42, the carrying handle pipe 6, the swinging pipe 61, the swinging fixing seat 62, the bayonet 621, the swinging base 63, the fastening part 631, the linkage part 632, the swinging supporting foot 64, the fixing seat 7, the limiting wheel 71, the first limiting groove 72, the connecting column 73, the first groove 74, the fixing column 75, the connecting seat 8, the key 81, the second limiting groove 82, the key hole 83, the second groove 84, the locking part 9 and the locking hook 91.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the prior art. Therefore, the present invention is an improvement of the prior art, which is substantially in the connection relationship between hardware, and not in the functions and methods themselves, that is, the present invention relates to a point of functions and methods, but does not include the improvements proposed in the functions and methods themselves. The description of the present invention as to functions and methods is provided for better illustration and understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

Referring to fig. 1 to 5, the present application relates to a crib middle bed, which includes a base 2, a first lower enclosing tube 11, a second lower enclosing tube 12, a first upper enclosing tube 41, a second upper enclosing tube 42, a first folding member 31, a second folding member 32, a first sliding sleeve 33, a second sliding sleeve 34, and a locking member 9, wherein the first lower enclosing tube 11, the second lower enclosing tube 12, the first upper enclosing tube 41, and the second upper enclosing tube 42 are rotatably connected to the base 2; the lower end of the first folding element 31 is rotatably connected with the first lower enclosing pipe 11, the lower end of the second folding element 32 is rotatably connected with the second lower enclosing pipe 12, and the upper ends of the first folding element 31 and the second folding element 32 are rotatably connected through a connecting piece; the first sliding sleeve 33 is sleeved on the first upper enclosing pipe 41 in a sliding manner and is rotationally connected with the first folding piece 31, and the second sliding sleeve 34 is sleeved on the second upper enclosing pipe 42 in a sliding manner and is rotationally connected with the second folding piece 32; the lower end of the locking member 9 is rotatably connected to the base 2, and the upper end of the locking member is provided with a locking hook 91 with an opening at one side, and the locking hook 91 is hooked on the connecting member and separated from the connecting member when the locking member 9 rotates.

In the application, the first folding piece 31, the second folding piece 32 and the locking piece 9 are arranged, the locking hook 91 with an opening at one side is arranged at the upper end of the locking piece 9, and the upper and lower enclosing pipes (the first upper enclosing pipe 41, the second upper enclosing pipe 42, the first lower enclosing pipe 11 and the second lower enclosing pipe 12) can be opened and folded by opening and folding the first folding piece 31 and the second folding piece 32; when the bed is opened, the locking hook 91 on the locking piece 9 is hooked on the connecting piece for hinging the first folding piece 31 and the second folding piece 32 so as to lock the first folding piece 31 and the second folding piece 32, so that the bed in the bed is in an opened state; when needs are folded up, rotate locking piece 9 and make latch hook 91 break away from the connecting piece and realize the unblock, the upper end of first closing piece 31 and second closing piece 32 can the rebound and drive about the pipe upwards rotate to vertical state, realize folding up of bed in the bed, overall structure is simple, and locking and unblock are all very convenient.

The first upper enclosing pipe 41, the second upper enclosing pipe 42, the first lower enclosing pipe 11 and the second lower enclosing pipe 12 are all U-shaped structures, the first lower enclosing pipe 11 and the second lower enclosing pipe 12 are respectively and rotatably connected to two sides of the base 2, and the first lower enclosing pipe 11 and the second lower enclosing pipe 12 are in an approximately horizontal state in an opening state; the first upper surrounding pipe 41 and the second upper surrounding pipe 42 are respectively connected to two sides of the base 2 in a rotating way and are in an inclined state; the first folding piece 31 and the second folding piece 32 are both in a strip shape, the first folding piece 31 and the second folding piece 32 are respectively connected with the corresponding upper and lower enclosing pipes, the upper ends of the first folding piece 31 and the second folding piece 32 are hinged through the connecting piece, and a triangular structure is formed between the first folding piece 31 and the second folding piece 32 and the lower enclosing pipes.

Be equipped with first spread groove and second spread groove on the base 2, first spread groove and second spread groove are located the both sides of base 2 respectively, and the lower extreme of first bustle pipe 11 and first last bustle pipe 41 rotates respectively to be connected in first spread groove, and the lower extreme of bustle pipe 42 rotates respectively to be connected in the second spread groove under second bustle pipe 12 and the second.

The first connecting groove and the second connecting groove are identical in structure and comprise a first limit position and a second limit position, the first limit position is a horizontal position, and the second limit position is a vertical position. The upper and lower enclosing pipes are connected in the connecting grooves (a first connecting groove and a second connecting groove), and the lower enclosing pipes (a first lower enclosing pipe 11 and a second lower enclosing pipe 12) are positioned at a first limit position when in an open state and rotate to a second limit position from the first limit position when folded; the upper enclosing pipes (the first upper enclosing pipe 41 and the second upper enclosing pipe 42) are inclined between the first limit position and the second limit position when in an opening state under the action of the folding pieces (the first folding piece 31 and the second folding piece 32), and rotate to the second limit position when in folding to be vertical.

The upper ends of the first folding element 31 and the second folding element 32 are hinged by a connecting element, which may be a pin, a shaft, a connecting column, etc.

The sliding sleeves (the first sliding sleeve 33 and the second sliding sleeve 34) are sleeved on the upper surrounding pipe and can slide along the upper surrounding pipe. The sliding sleeve can be fixed at the middle position of the folding piece through a bolt, and when the folding piece is opened or folded, the sliding sleeve is driven to slide on the upper enclosing pipe through rotating the folding piece so as to open or fold the upper enclosing pipe.

The locking member 9 is a vertically arranged sheet structure, the upper end of the locking member is hooked on the connecting member through the locking hook 91 to lock the first folding member 31 and the second folding member 32, the lower end of the locking member is rotatably connected with the base 2, and the locking member can reversely rotate towards the opening side under the action of external force, so that the upper end of the locking member is separated from the connecting member to unlock the locking member.

Specifically, the device also comprises a fixed seat 7, wherein the fixed seat 7 is fixed on the outer side of the base 2; a fixing hole is formed in the upper portion of the base 2 and located between the first connecting groove and the second connecting groove; a fixing column 75 is eccentrically arranged on the inner side of the fixing seat 7, and the fixing column 75 is inserted into the fixing hole; the lower extreme of locking piece 9 rotates to be connected on fixed column 75, on fixing base 7, and be located the both sides of fixed column 75 and offer the rotation groove that supplies locking piece 9 pivoted.

In order to facilitate the operation of the lock member 9, an action portion extending in a direction perpendicular to the rotation surface is provided on the other side of the upper end of the lock member 9 opposite to the opening side.

In order to facilitate moving the bed in the bed, the lifting handle pipe 6 is also included, the lifting handle pipe 6 is in a U-shaped structure, and the opening ends of the lifting handle pipe 6 are respectively and rotatably connected with the base 2 on the corresponding side. The lifting device can rotate to a vertical state or a horizontal state, rotate to the vertical state when a bed is moved in a bed to be convenient to lift, and rotate to the horizontal state or keep the vertical state when the bed is not moved in the bed.

Handle pipe 6 accessible connecting seat 8 rotates with base 2 to be connected, and is specific, and the open end of handle pipe 6 is fixed on connecting seat 8, and connecting seat 8 rotates with fixing base 7 to be connected.

More specifically, the device also comprises a limiting wheel 71 and a return spring, wherein limiting bulges extending to the limiting wheel 71 in the radial direction are arranged at intervals along the circumferential direction of the limiting wheel 71; a first limiting groove 72 is arranged on the outer side of the fixed seat 7, and first grooves 74 matched with the limiting bulges are arranged at intervals along the circumferential direction of the inner wall of the first limiting groove 72; a second limiting groove 82 is formed in the inner side of the connecting seat 8, and second grooves 84 matched with the limiting protrusions are formed in the circumferential direction of the inner wall of the second limiting groove 82 at intervals; the depth of the second limiting groove 82 is smaller than the thickness of the limiting wheel 71, and the depth of the first limiting groove 72 is larger than or equal to the thickness of the limiting wheel 71; a connecting column 73 is arranged outside the fixed seat 7 and in the first limiting groove 72, and the connecting column 73 extends into the second limiting groove 82; the reset spring is sleeved on the connecting column 73, the limiting wheel 71 is sleeved on the connecting column 73 and matched in the first limiting groove 72 and the second limiting groove 82 under the action of the reset spring to be connected with the connecting seat 8 and the fixing seat 7, and the connecting seat 8 is separated from the connecting seat 8 by moving towards the first limiting groove 72 along the connecting column 73 under the action of external force.

Under the action of a return spring, the outer side of the limiting wheel 71 is matched in the second limiting groove 82, the inner side of the limiting wheel is matched in the first limiting groove 72, the limiting bulge is arranged in the circumferential direction of the limiting wheel 71, the inner walls of the first limiting groove 72 and the second limiting groove 82 are respectively provided with a first groove 74 and a second groove 84 in the circumferential direction, the connecting seat 8 is connected with the fixing seat 7 through the limiting wheel 71 for limiting, and the connecting seat 8 is matched with the end face of the fixing seat 7; when the handle pipe 6 needs to be rotated, the limiting wheel 71 is pressed by external force, the limiting wheel 71 moves towards the first limiting groove 72 under the action of the external force, the reset spring is compressed, when the limiting wheel 71 completely moves to the first limiting groove 72, the connecting seat 8 is disconnected from the fixed seat 7, and the connecting seat 8 can rotate relative to the fixed seat 7; (ii) a When the rotation is finished, the limiting wheel 71 is loosened, the limiting wheel 71 is reset under the action of the reset spring, and the connecting seat 8 and the fixed seat 7 are connected again.

In order to press the limiting wheel 71 conveniently, the limiting wheel further comprises a key 81, a key 81 groove is formed in the outer side of the connecting seat 8, and the key 81 is installed in the key 81 groove; a key 81 hole penetrating through the second limiting groove 82 is formed in the circumferential direction of the key 81 groove, a key 81 portion is arranged on the inner side of the key 81, the key 81 portion extends towards the inner side of the key 81, and a plurality of key 81 portions can be arranged at intervals. In this embodiment, three key 81 portions are disposed at intervals inside the key 81, the number of the key 81 holes is three, each key 81 portion is correspondingly inserted into the key 81 hole and contacts with the limiting wheel 71, and the limiting wheel 71 is pushed by an external force to move toward the first limiting groove 72 to separate from the connecting seat 8.

When the handle tube 6 needs to be rotated, the key 81 is pressed inwards, the key 81 part of the key 81 acts on the limiting wheel 71 to push the limiting wheel 71 to move towards the first limiting groove 72, and the connecting seat 8 and the fixed seat 7 are separated and can rotate relatively; when the rotation is finished, the push-button 81 is released, which is reset by the return spring.

The limiting part is arranged along the circumferential direction of the inner wall of the outer side of the key 81 groove, the limiting boss which protrudes outwards and is matched with the limiting part is arranged outside the key 81 part, and the key 81 is arranged in the key 81 groove through the limiting effect of the limiting boss and the limiting part.

In order to realize the function of swaing to the baby in the bed pacifies in the bed, still include rocking tube 61 and swing seat, rocking tube 61 is the arc structure, and rocking tube 61 is two, and two rocking tubes 61 interval sets up. Two ends of the two swing pipes 61 are respectively detachably connected with the first lower enclosing pipe 11 or the second lower enclosing pipe 12 at the corresponding end through the swing seat.

Specifically, rocking the seat including rocking base 632 and rocking fixing base 62, rocking tube 61's tip is fixed on rocking base 632, and rocking fixing base 62 is fixed on corresponding end's first down surrounding pipe 11 or second down surrounding pipe 12, and rocking base 632 and rocking fixing base 62 buckle cooperation.

Specifically, a bayonet 621 is disposed on the outer side of the swing fixing seat 62, a fastening piece 631 engaged with the bayonet 621 is disposed on the top of the swing base 632, and a pressing portion linked with the fastening piece 631 is disposed on the swing base 632. When the swing pipe is connected, the fastener 631 is clamped into the bayonet 621 from the inside of the swing fixing seat 62, so that the swing pipe 61 is fixed on the lower surrounding pipe; when the swing pipe 61 needs to be detached, the pressing portion is pressed inward, the driving latch 631 moves inward to be separated from the latch, the swing fixing seat 62 is separated from the swing base 632, and the swing pipe 61 can be detached.

Swing support feet 64 may also be provided on the underside of the swing base 632 to increase the stability of the bed in the bed.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. A crib middle bed comprises a base, a first lower enclosing pipe, a second lower enclosing pipe, a first upper enclosing pipe and a second upper enclosing pipe, wherein the first lower enclosing pipe, the second lower enclosing pipe, the first upper enclosing pipe and the second upper enclosing pipe are rotatably connected to the base; the lower end of the first folding piece is rotationally connected with the first lower enclosing pipe, the lower end of the second folding piece is rotationally connected with the second lower enclosing pipe, and the upper ends of the first folding piece and the second folding piece are rotationally connected through a connecting piece; the first sliding sleeve is sleeved on the first upper enclosing pipe in a sliding manner and is rotationally connected with the first folding piece, and the second sliding sleeve is sleeved on the second upper enclosing pipe in a sliding manner and is rotationally connected with the second folding piece; the lower end of the locking piece is rotatably connected to the base, and the upper end of the locking piece is provided with a locking hook with an opening at one side, and the locking hook is hooked on the connecting piece and separated from the connecting piece when the locking piece rotates.

2. The crib of claim 1, further comprising a swing tube and a swing seat, wherein the swing tube has an arc-shaped structure, and two ends of the swing tube are detachably connected to the first lower surrounding tube or the second lower surrounding tube at the corresponding ends through the swing seat.

3. The crib as defined in claim 1 or 2, further comprising a handle tube having a U-shaped structure, and open ends thereof are rotatably connected to the bases on the respective sides.

4. The crib as defined in claim 3, wherein said base has a first connecting slot and a second connecting slot, said first connecting slot and said second connecting slot are respectively located at two sides of said base, said first lower enclosing tube and said first upper enclosing tube are respectively rotatably connected to the first connecting slot at their lower ends, and said second lower enclosing tube and said second upper enclosing tube are respectively rotatably connected to the second connecting slot at their lower ends.

5. The crib of claim 4, further comprising a fixing seat fixed to an outer side of the base; a fixed hole is formed in the upper part of the base and positioned between the first connecting groove and the second connecting groove; a fixing column is eccentrically arranged on the inner side of the fixing seat and inserted into the fixing hole; the lower extreme of locking piece rotates to be connected on the fixed column, on the fixing base, and be located the both sides of fixed column and offer and supply locking piece pivoted rotation groove.

6. The crib of claim 5, further comprising a connecting base, wherein the open end of the handle tube is fixed on the connecting base, and the connecting base is rotatably connected with the fixing base.

7. The crib of claim 6, further comprising a limiting wheel and a return spring, wherein the limiting wheel is provided with limiting protrusions extending radially along the limiting wheel at intervals along the circumferential direction; the outer side of the fixed seat is provided with a first limiting groove, and first grooves matched with the limiting bulges are formed in the inner wall of the first limiting groove at intervals in the circumferential direction; a second limiting groove is formed in the inner side of the connecting seat, and second grooves matched with the limiting bulges are formed in the inner wall of the second limiting groove at intervals in the circumferential direction; a connecting column is arranged outside the fixed seat and in the first limiting groove and extends into the second limiting groove; the reset spring is sleeved on the connecting column, the limiting wheel is sleeved on the connecting column and matched in the first limiting groove and the second limiting groove under the action of the reset spring to be connected with the connecting seat and the fixing seat, and the limiting wheel moves along the connecting column to the direction of the first limiting groove under the action of external force to be separated from the connecting seat.

8. The crib of claim 7, further comprising a button, wherein a button key slot is arranged on the outer side of the connecting seat, and the button is arranged in the button key slot; a key hole penetrating through the second limiting groove is formed in the circumferential direction of the key groove, a key part is arranged on the inner side of the key, and the key part is inserted into the key hole, is in contact with the limiting wheel and pushes the limiting wheel to move towards the first limiting groove under the action of external force so as to be separated from the connecting seat.

9. The crib of claim 2, wherein the swing seat comprises a swing base and a swing seat, the end of the swing pipe is fixed on the swing base, the swing seat is fixed on the first lower enclosing pipe or the second lower enclosing pipe at the corresponding end, and the swing base is in snap fit with the swing seat.

10. The crib of claim 9, further comprising swing support feet secured to the swing base.

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